Scopus
EXPORT DATE: 01 December 2025

Liu, D., Zhou, J., Sang, X., Tang, D., Zhang, S., Chen, Q.
AUTHOR FULL NAMES: Liu, Dunlong (56298155700); Zhou, Jing (60124529100); Sang, Xuejia (57191842697); Tang, Dan (35191134600); Zhang, Shaojie (35249906100); Chen, Qiao (7406333784)
56298155700; 60124529100; 57191842697; 35191134600; 35249906100; 7406333784
Machine learning-based identification of potential debris flow catchments in the Wenchuan earthquake region
(2025) Earth Science Informatics, 18 (4), art. no. 515, Cited 0 times.
DOI: 10.1007/s12145-025-01990-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105017584481&doi=10.1007%2Fs12145-025-01990-y&partnerID=40&md5=dc1b868d1ae695db77e81f8cfebcf20e

AFFILIATIONS: College of Software Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, China; Sichuan Province Engineering Technology Research Center of Support Software of Informatization Application, Chengdu, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chongqing Institute of Green and Intelligent Technology, Chongqing, China
ABSTRACT: An early identification of catchments with potential for debris flow (debris flow catchments) is a fundamental step in the investigation and early warning of debris flow disasters. However, when identifying potential debris flow catchments at regional scales, certain methodological challenges exist, such as the subjective determination of drainage area thresholds during catchment delineation, the lack of systematic criteria for selecting negative samples (non-debris-flow catchments), and low model accuracy. To address these issues, we employ the river network density method to achieve a more reasonable delineation of catchment units compared to traditional methods. Additionally, a Self-Organizing Map (SOM) is employed to improve the identification of non-debris-flow catchments. Factors closely associated with debris flow formation related to topography, material sources, and climate are selected as input features. By leveraging the stacking ensemble method, which includes the Random Forest (RF), K-Nearest Neighbors (KNN), and Support Vector Machine (SVM) algorithms, a model for identifying potential debris flow catchments is produced. To evaluate the performance of the model, the Wenchuan earthquake area in the northwestern Sichuan Basin was used, where potential debris flow catchments were extracted from the ensemble and compared with the results of individual logistic regression (logit), RF, KNN, SVM models. The comparison of Receiver Operating Characteristic (ROC) curves, Area Under the Curve (AUC), accuracy, precision, recall, and F1 score reveals that the stacking ensemble model achieves values of 0.967, 0.918, 0.918, 0.895, and 0.906, respectively, all of which are higher than those for the individual models. The identification of potential debris flow catchments using this ensemble model can help to screen areas for the deployment of debris flow forecasting and early warning, thereby supporting disaster prevention and mitigation efforts. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.
AUTHOR KEYWORDS: Catchment identification; Debris flows; K-Nearest neighbors; Logistic regression; Random forest; Self-Organizing map; Stacking; Support vector machine; Wenchuan earthquake region
INDEX KEYWORDS: catchment; debris flow; machine learning; regression analysis; seismic zone; stacking; support vector machine; China; Sichuan; Wenchuan
REFERENCES: Bertrand, Mélanie, Debris-flow susceptibility of upland catchments, Natural Hazards, 67, 2, pp. 497-511, (2013); 
Breiman, Leo, Random forests, Machine Learning, 45, 1, pp. 5-32, (2001); 
Cao, Juan, Multi-geohazards susceptibility mapping based on machine learning—a case study in Jiuzhaigou, China, Natural Hazards, 102, 3, pp. 851-871, (2020); 
Choi, Jaewon, Validation of an artificial neural network model for landslide susceptibility mapping, Environmental Earth Sciences, 60, 3, pp. 473-483, (2010); 
Cortes, Corinna, Support-Vector Networks, Machine Learning, 20, 3, pp. 273-297, (1995); 
Bulletin of the Association of Engineering Geologists, (1981); 
Cover, Thomas M., Nearest Neighbor Pattern Classification, IEEE Transactions on Information Theory, 13, 1, pp. 21-27, (1967); 
Journal of the Royal Statistical Society Series B, (1958); 
Guo, Pengning, Methods for Evaluating Debris Flow Susceptibility Based on OOD Generalization Verification and Deep Fully Connected Neural Networks, Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences, 56, 4, pp. 182-193, (2024); 
Hanley, James Anthony H., The meaning and use of the area under a receiver operating characteristic (ROC) curve, Radiology, 143, 1, pp. 29-36, (1982)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chang, M., Dou, X., Luo, C., Su, Y.
AUTHOR FULL NAMES: Chang, Ming (36727157900); Dou, Xiangyang (57196153451); Luo, Chaopeng (57506715900); Su, Yongchao (59674725400)
36727157900; 57196153451; 57506715900; 59674725400
Multi-scenario simulations for quantitative assessment of debris flow chain hazards in southwestern China
(2025) Catena, 253, art. no. 108900, Cited 1 times.
DOI: 10.1016/j.catena.2025.108900
https://www.scopus.com/inward/record.uri?eid=2-s2.0-86000358409&doi=10.1016%2Fj.catena.2025.108900&partnerID=40&md5=a4440aaa5a53b130deae542711047b15

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Faculty of Geo-Information Science and Earth Observation – ITC, Enschede, Overijssel, Netherlands; Ltd., Guiyang, Guizhou, China; China Institute of Geo-Environmental Monitoring, Beijing, Beijing, China; MNR, Oasis, China
ABSTRACT: Following the catastrophic Wenchuan earthquake in 2008, debris flows have repeatedly obstructed rivers across China's southwestern mountainous regions, triggering numerous flood disasters and subsequent cascading effects. Ethnic minority villages in these areas are predominantly situated within alpine canyon zones highly susceptible to seismic activity, rendering them exceptionally vulnerable to flood disaster chains initiated by debris flows. This study focuses on Luobajie Gully in the southwest mountainous region as a case study to elucidate the chain hazard responses associated with debris flows and to highlight the critical importance of such research. Comprehensive field investigations provided essential data—including sediment depth, flow density, and velocity—for numerical simulations aimed at assessing potential hazards. Simulation results demonstrate that only debris flows triggered by a 100-year rainstorm event cause channel blockages in Luobajie Gully, leading to significant rises in river water levels due to dammed floodwaters. The resulting flooding reaches maximum water depths within the inundation zone of the accumulation fan, exerting the most substantial impact on adjacent industrial areas. A quantitative risk assessment of 100-year debris flow events was carried out to evaluate the potential hazards. This study analyzes in detail the movement process and potential hazards of the Luobajie Gully debris flow through detailed remote sensing image analysis, field investigation and numerical simulation, and emphasizes the necessity of taking effective preventive and control measures to reduce the associated risks. Since the Heishui River traverses the Wenchuan earthquake area, there are still several potential debris flow gullies, and potential debris flows may pose a non-negligible threat to the entire earthquake area. The model and theory presented in this paper can be effectively applied to the simulation and early warning of other potential debris flows in the earthquake area under similar circumstances, thus facilitating their wide application in flood risk management. © 2025 Elsevier B.V.
AUTHOR KEYWORDS: Blocking river; Chain hazard; Debris flow; Multiple scenarios simulation; Quantitative assessment
INDEX KEYWORDS: computer simulation; debris flow; disaster management; flood control; flooding; quantitative analysis; remote sensing; risk assessment; river water; Sichuan earthquake 2008; water level; China; Heishui River; Sichuan; Wenchuan
REFERENCES: undefined, (1980); 
Chang, Ming, Catastrophe process of outburst debris flow triggered by the landslide dam failure, Journal of Hydrology, 609, (2022); 
Chang, Ming, Patterns of rainfall-threshold for debris-flow occurrence in the Wenchuan seismic region, Southwest China, Bulletin of Engineering Geology and the Environment, 80, 3, pp. 2117-2130, (2021); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Chen, Huili, Assessing national exposure to and impact of glacial lake outburst floods considering uncertainty under data sparsity, Hydrology and Earth System Sciences, 29, 3, pp. 733-752, (2025); 
Chen, Hongey, Recent rainfall-induced landslides and debris flow in northern Taiwan, Geomorphology, 77, 1-2, pp. 112-125, (2006); 
Chen, K. T., Early identification of river blocking induced by tributary debris flow based on dimensionless volume index, Landslides, 16, 12, pp. 2335-2352, (2019); 
undefined, (2018); 
Christen, Marc, RAMMS: Numerical simulation of dense snow avalanches in three-dimensional terrain, Cold Regions Science and Technology, 63, 1-2, pp. 1-14, (2010); 
Ding, Xingyu, Risk assessment of debris flow disaster in mountainous area of northern Yunnan province based on FLO-2D under the influence of extreme rainfall, Frontiers in Environmental Science, 11, (2023)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lei, X., Wang, X., Zhang, S., Yang, H., Wang, D., Wei, F.
AUTHOR FULL NAMES: Lei, Xiaohu (57447247700); Wang, Xiuying (59747612300); Zhang, Shaojie (35249906100); Yang, Hongjuan (55545920200); Wang, Defu (58182730900); Wei, Fangqiang (14033564100)
57447247700; 59747612300; 35249906100; 55545920200; 58182730900; 14033564100
Regional landslide identification using the slope unit containing deformation information
(2025) Natural Hazards, 121 (10), pp. 11885 - 11914, Cited 0 times.
DOI: 10.1007/s11069-025-07265-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105004923627&doi=10.1007%2Fs11069-025-07265-5&partnerID=40&md5=f49e5de1afe98f5385c68a7a3a828f3b

AFFILIATIONS: School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, Chongqing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chongqing Institute of Green and Intelligent Technology, Chongqing, China; The Third Geoinformation Mapping Institute of Ministry of Natural Resource, Chengdu, China
ABSTRACT: Using Interferometric Synthetic Aperture Radar (InSAR) to identify potential landslides on a regional scale requires defining their boundary ranges and shape characteristics. However, InSAR data in grid form can only delineate the deformation area within a slope and cannot identify its boundary and geometric features. To address this issue, a morphological image analysis and homogeneous slope unit-based method was adopted to extract slope units. Using Geographic Information System spatial analysis technology, the slope unit (surface vector) and InSAR (raster data) datasets were superimposed (hereinafter referred to as SU_InSAR). This can delineate specific slope boundaries for InSAR data scattered on a regional scale, enhancing readability and yielding a slope unit which contains deformation information for the identification of potential landslides. SU_InSAR was used to identify potential landslides in Minjiang River basin in Aba Prefecture, Sichuan Province, China. The results derived from the new mapping unit were compared to those of a hydrological-mechanical model using the Receiver Operating Characteristic evaluation method. The comparison results showed that the accuracy of the SU_ InSAR-based model was 24.4% higher than that of the hydrologic-mechanical model, which is expected to improve landslide mitigation. © The Author(s), under exclusive licence to Springer Nature B.V. 2025.
AUTHOR KEYWORDS: Identify potential landslides; InSAR; Landslide boundary; Receiver Operating Characteristic (ROC); Slope unit; Wenchuan earthquake-stricken area, China
INDEX KEYWORDS: deformation; GIS; image analysis; landslide; radar interferometry; seismic zone; slope dynamics; synthetic aperture radar; China; Sichuan; Wenchuan
REFERENCES: Ahmad, Amir, A k-mean clustering algorithm for mixed numeric and categorical data, Data and Knowledge Engineering, 63, 2, pp. 503-527, (2007); 
Alvioli, Massimiliano, Topography-driven satellite imagery analysis for landslide mapping, Geomatics, Natural Hazards and Risk, 9, 1, pp. 544-567, (2018); 
Ba, Qianqian, A comparison of slope units and grid cells as mapping units for landslide susceptibility assessment, Earth Science Informatics, 11, 3, pp. 373-388, (2018); 
Bayer, Benedikt, Using advanced InSAR techniques to monitor landslide deformations induced by tunneling in the Northern Apennines, Italy, Engineering Geology, 226, pp. 20-32, (2017); 
Bianchini, Silvia, Landslide HotSpot Mapping by means of Persistent Scatterer Interferometry, Environmental Earth Sciences, 67, 4, pp. 1155-1172, (2012); 
Carlà, Tommaso, Integration of ground-based radar and satellite InSAR data for the analysis of an unexpected slope failure in an open-pit mine, Engineering Geology, 235, pp. 39-52, (2018); 
Chen, Beibei, Land subsidence and its relation with groundwater aquifers in Beijing Plain of China, Science of the Total Environment, 735, (2020); 
Landslide Susceptibility Assessment Using Conditional Analysis and Rare Events Logistics Regression A Case Study in the Antrodoco Area Rieti Italy, (2016); 
Cigna, Francesca, How to assess landslide activity and intensity with Persistent Scatterer Interferometry (PSI): The PSI-based matrix approach, Landslides, 10, 3, pp. 267-283, (2013); 
Dai, Fuchu, Assessment of landslide susceptibility on the natural terrain of Lantau Island, Hong Kong, Environmental Geology, 40, 3, pp. 381-391, (2001)
PUBLISHER: Springer Science and Business Media B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiong, J., Chen, H., Tang, C., Zhao, W., Chen, M., Yang, T., Gong, L., Zhang, X., Shi, Q., Li, N., Chen, J.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Chen, Huayong (24385415200); Tang, Chuan (35932953300); Zhao, Wanyu (23973928300); Chen, Ming (57199453005); Yang, Tao (58761034900); Gong, Lingfeng (57215612725); Zhang, Xianzheng (57219298270); Shi, Qingyun (57217257328); Li, Ning (57211181445); Chen, Jiangang (56013367200)
57217517892; 24385415200; 35932953300; 23973928300; 57199453005; 58761034900; 57215612725; 57219298270; 57217257328; 57211181445; 56013367200
Risk prediction of catastrophic debris flows against the background of material changes and human engineering activity in the Wenchuan earthquake disturbance area
(2025) Bulletin of Engineering Geology and the Environment, 84 (5), art. no. 228, Cited 0 times.
DOI: 10.1007/s10064-025-04243-w
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105002808332&doi=10.1007%2Fs10064-025-04243-w&partnerID=40&md5=5735b40259cc1008a50ceeaba47380bf

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Geological Survey, Beijing, Beijing, China; Chengdu University of Information Technology, Chengdu, Sichuan, China; School of Emergency Management, Xihua University, Chengdu, Sichuan, China
ABSTRACT: The changes in landslide material and human engineering activities have often posed important impacts on debris flow risk. In this study, multi-period remote sensing images and unmanned aerial vehicle aerial images are used to monitor the prolonged variation in landslide materials transfer for debris flow initiation. Simultaneously the FLO- 2D model and vulnerable curve were used to detect the risk of debris flow in the later period (after 2023). After 15 years of the Wenchuan earthquake, the hillslope landslide materials delivery for debris flow initiation is limited. Impacted by the changes in solid materials, topography and human engineering activities, the risk of debris flow with a recurrence period of 10, and 20 years has been effectively reduced, but for the 50 and 100 years of recurrence period situation, the impact of human engineering activities and channel topography on debris flow risk is limited. For the 10, 20, 50 and 100 years of recurrence period situation, the buildings are at"extreme"and"high"risk was 0, 21, 38, and 115, respectively. Therefore, the monitoring and early warning is still an important measure to reduce economic losses and casualties in the later period. © The Author(s) 2025.
AUTHOR KEYWORDS: Debris flow; Human engineering; Landslide material; Risk assessment; Wenchuan earthquake
INDEX KEYWORDS: Aerial photography; Human engineering; Unmanned aerial vehicles (UAV); Aerial vehicle; Debris flows; Engineering activities; Landslide material; Material change; Multi-period; Remote sensing images; Risk predictions; Risks assessments; Wenchuan Earthquake; Earthquakes; channel morphology; debris flow; hillslope; landslide; prediction; remote sensing; risk assessment; Sichuan earthquake 2008; topographic effect; unmanned vehicle; China; Sichuan; Wenchuan
REFERENCES: Baynes, Edwin R.C., Fluvial evacuation of landslide material from bedrock-confined channels under controlled experimental conditions, Geomorphology, 368, (2020); 
Carranza, Emmanuel John M., Predicting lahar-inundation zones: Case study in West Mount Pinatubo, Philippines, Natural Hazards, 37, 3, pp. 331-372, (2006); 
Cavalli, Marco, Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments, Geomorphology, 188, pp. 31-41, (2013); 
Chang, Ming, Hazard assessment of a catastrophic mine waste debris flow of Hou Gully, Shimian, China, Engineering Geology, 275, (2020); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Ming, Quantitative assessment of physical fragility of buildings to the debris flow on 20 August 2019 in the Cutou gully, Wenchuan, southwestern China, Engineering Geology, 293, (2021); 
Chen, Yuechao, Research of impacts of the 2018 Hokkaido eastern Iburi earthquake on sediment transport in the Atsuma river basin using the SWAT model, Water (Switzerland), 13, 3, (2021); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Chen, Ming, Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake, Catena, 236, (2024)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, M., Tang, C., Yang, Y., Xiong, J.
AUTHOR FULL NAMES: Chen, Ming (57199453005); Tang, Chuan (35932953300); Yang, Yu (59892315500); Xiong, Jiang (57217517892)
57199453005; 35932953300; 59892315500; 57217517892
Quantifying spatio-temporal changes in the ecological environment quality and their implications for surface mass movement after a high-magnitude earthquake
(2025) Global Ecology and Conservation, 58, art. no. e03454, Cited 6 times.
DOI: 10.1016/j.gecco.2025.e03454
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215435183&doi=10.1016%2Fj.gecco.2025.e03454&partnerID=40&md5=cd009b2f337a2749d55592061c3a4218

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; School of Sciences, Xihua University, Chengdu, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The accurate detection and assessment of changes in the quality of the ecological environment is crucial under seismic disturbances for regional ecological environment recovery and protection. To ensure ecological safety and reduce the geo-ecological risks in the Wenchuan earthquake-affected areas, assessing the quality of the ecological environment and its underlying influencing factors is an important initiative. First, we developed the multi-temporal remote sensing ecological quality (RSEI) dataset spanning from 2007 to 2023 in the Wenchuan earthquake-affected area. Subsequently, we quantitatively assessed the spatio-temporal evolution of the ecosystem quality based on eight RSEI maps. Meanwhile, we examined the control of elevation, slope, aspect, and gully density on the spatiotemporal variation in RSEI. Finally, we explored the interactions between ecological quality and surface mass movement. We found that the average RSEI decreased from 0.80 before the earthquake to 0.47 after the earthquake, and increased to 0.66 after the 15-year recovery period, which indicates a gradual increase in the general ecological quality from 2008 to 2023. In 2023, 36.2 % of the area will still be below the good level of RSEI. Areas with higher elevations, steeper slopes, SE orientation or higher gully densities have lower ecological resilience. We also found that the susceptibility to surface mass movements such as debris flows and landslides was higher in catchments with poorer ecological quality. Generally, the RSEI oscillatory increasing trend was observed after the 2008 Wenchuan earthquake. If RSEI follows the fitted trend, ecological quality will recover to pre-earthquake levels in 2035. Our study will contribute important information and decision-making references for policymakers to carry out more targeted environmental protection, ecological recovery, and sustainable development efforts. © 2025 The Authors
AUTHOR KEYWORDS: Controlling factor; Ecological quality; Spatio-temporal evolution; Surface mass movement; Wenchuan earthquake
REFERENCES: Boori, Mukesh Singh, Spatiotemporal ecological vulnerability analysis with statistical correlation based on satellite remote sensing in Samara, Russia, Journal of Environmental Management, 285, (2021); 
Chen, Yu, Active–Passive Remote Sensing Evaluation of Ecological Environment Quality in Juye Mining Area, China, Remote Sensing, 15, 24, (2023); 
Chen, Ming, Seismically induced hillslope disturbance, sediment connectivity and mass wasting: Insights from the 2008 Wenchuan earthquake, Geomorphology, 449, (2024); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake, Catena, 236, (2024); 
Chu, Hongshuai, NDVI-based vegetation dynamics and its response to climate changes at Amur-Heilongjiang River Basin from 1982 to 2015, Science of the Total Environment, 650, pp. 2051-2062, (2019); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Geng, Jianwei, Analysis of Spatiotemporal Variation and Drivers of Ecological Quality in Fuzhou Based on RSEI, Remote Sensing, 14, 19, (2022)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhang, J., Zhang, Y., Dannenberg, M.P., Guo, Q., Atkins, J.W., Li, W., Sun, G.
AUTHOR FULL NAMES: Zhang, Jiehao (58033179500); Zhang, Yulong (51865191500); Dannenberg, Matthew P. (55894282100); Guo, Qinfeng (57203079951); Atkins, J. W. (56662779300); Li, Wenhong (36627352900); Sun, Ge (7402760408)
58033179500; 51865191500; 55894282100; 57203079951; 56662779300; 36627352900; 7402760408
Eco-hydrological recovery following large vegetation disturbances from a mega earthquake on the eastern Tibetan plateau
(2025) Journal of Hydrology, 651, art. no. 132595, Cited 4 times.
DOI: 10.1016/j.jhydrol.2024.132595
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85213535484&doi=10.1016%2Fj.jhydrol.2024.132595&partnerID=40&md5=b9e48d5287028237f0b527b23d11ade0

AFFILIATIONS: Wuhan Botanical Garden, Wuhan, Hubei, China; Department of Land Administration, China University of Geosciences, Wuhan, Hubei, China; USDA Forest Service, Washington, D.C., United States; Division of Earth and Climate Sciences, Duke University, Durham, NC, United States; Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, IA, United States; Southern Research Station, USDA Forest Service, Washington, D.C., United States
ABSTRACT: Catastrophic earthquakes induce significant, enduring vegetation disturbances through extensive landslides and geomorphological alterations. The post-earthquake vegetation recovery hinges on the disturbance severity, climatic variability, and strategic human intervention, yet understanding of these critical processes and their influences on eco-hydrological functions at the landscape level remains limited. This study aims to quantify the earthquake's impacts on vegetation structure and eco-hydrological functions and to elucidate the recovery mechanisms driven by climate variability and human efforts. We focused on the 2008 Wenchuan Earthquake on China's eastern Tibetan plateau as a case study to investigate its influences on vegetation cover and eco-hydrological functions in gross primary productivity (GPP), evapotranspiration (ET) and water yield (WY) using remote sensing, spatial-resolved causal impact analysis, and ecohydrological modeling. We found that the earthquake caused widespread vegetation disturbances from 2008 to 2010, altering land cover over 12% of the study area, and reducing GPP and ET by 7.0% and 14.7%, respectively. During this period, the affected regions witnessed a larger variation in WY, primarily due to a decrease in ET. From 2010 to 2018, GPP and ET showed rapid recovery, driven by both climatic factors (accounting for 23%-56% of the recovery), and human intervention (contributing 30%-42% to the recovery). Though WY did not show a statistically significant trend, human intervention-induced ET change was responsible for 38.9% to the changes in WY during the recovery period. Nevertheless, by 2018, 45% of the affected area still had not returned to pre-earthquake levels, with recovered areas remaining below the projected non-earthquake levels, indicating the vulnerability of mountainous ecosystems in recovery. Our findings highlight the significant, long-lasting eco-hydrological impacts of a catastrophic earthquake and underscore the effectiveness of integrating natural regeneration with targeted human restoration efforts. These insights improve our understanding of ecological vulnerability and resilience following natural hazards, providing valuable guidance for future post-natural disaster restoration initiatives. © 2024 Elsevier B.V.
AUTHOR KEYWORDS: Casual impact analysis; Earthquake; Eco-hydrological modeling; Evapotranspiration; Gross primary productivity; Vegetation disturbance
INDEX KEYWORDS: Anthropogenic; Casual impact analyze; Catastrophic earthquake; Eastern Tibetan plateau; Eco-hydrological models; Gross primary productivity; Human intervention; Hydrological functions; Impact analysis; Vegetation disturbance; Water yield; Abiotic; earthquake; evapotranspiration; human activity; hydrological modeling; land cover; net primary production; restoration ecology; vegetation cover; vegetation structure; vulnerability; water yield; China; Sichuan; Wenchuan
REFERENCES: Abatzoglou, John T., TerraClimate, a high-resolution global dataset of monthly climate and climatic water balance from 1958-2015, Scientific Data, 5, (2018); 
Ahmad, Samoon, Earthquake impact in a remote south asian population: Psychosocial factors and posttraumatic symptoms, Journal of Traumatic Stress, 23, 3, pp. 408-412, (2010); 
Allen, Robert B., Tree survival and growth responses in the aftermath of a strong earthquake, Journal of Ecology, 108, 1, pp. 107-121, (2020); 
Bull Chin Acad Sci Chin, (2008); 
Bao, Weikai, Ecological degradation in the Wenchuan Earthquake seriously affected region in Sichuan, China, Chinese Journal of Applied and Environmental Biology, 14, 4, pp. 441-444, (2008); 
Brodersen, Kay Henning, Inferring causal impact using bayesian structural time-series models, Annals of Applied Statistics, 9, 1, pp. 247-274, (2015); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Current Landscape Ecology Reports, (2020); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiong, J., Chen, H., Tang, C., Tang, C., Gong, L., Chen, M., Zhang, X., Yang, T., Li, N., Shi, Q., Li, M.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Chen, Huayong (24385415200); Tang, Chuan (35932953300); Tang, Chenxiao (55486336700); Gong, Lingfeng (57215612725); Chen, Ming (57199453005); Zhang, Xianzheng (57219298270); Yang, Tao (58761034900); Li, Ning (57211181445); Shi, Qingyun (57217257328); Li, Mingwei (57222871091)
57217517892; 24385415200; 35932953300; 55486336700; 57215612725; 57199453005; 57219298270; 58761034900; 57211181445; 57217257328; 57222871091
Geomorphometric assessment of spatial transfer potential of landslides sediment in seismically impacted areas
(2025) Natural Hazards, 121 (6), pp. 6525 - 6550, Cited 4 times.
DOI: 10.1007/s11069-024-07034-w
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105003819629&doi=10.1007%2Fs11069-024-07034-w&partnerID=40&md5=6a41080b59f01e84b36631e4d8ff906f

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Geological Survey, Beijing, Beijing, China; School of Emergency Management, Xihua University, Chengdu, Sichuan, China; Chengdu University of Information Technology, Chengdu, Sichuan, China; Institute of Geophysical and Geochemical Exploration Langfang, Langfang, Hebei, China
ABSTRACT: In the Wenchuan seismic region, solid material transport by landslides on hillslopes to channels has increased, increasing the susceptibility of debris flow in this seismic region. Timely and accurate mapping of the solid material transport potential of landslides on hillslopes is important for sediment management and debris-flow risk management. To rapidly and accurately understand the spatial distribution of the solid material transport potential of landslides on hillslopes in seismic areas, a new normalized index of the solid material transport potential of landslides on hillslopes (NDIH) was proposed to quantify the potential of solid material transport by landslides on hillslopes in drainage systems on the basis of remote sensing data and GIS platforms. The new approach was applied to 56 debris-flow basins in the epicenter of the Wenchuan seismic region, and the assessment results indicated that the regions between Gengda and Caopo had a greater potential for solid material transport by landslides on hillslopes in drainage systems, thereby increasing the susceptibility of debris flows at the beginning of the Wenchuan earthquake. Simultaneously, field investigations and remote sensing surveys were used to verify the rationality and reliability of the new method, and the area under the curve (AUC) of the ROC curve was 0.81; i.e., the results of the verification revealed that the NDIH can provide an accurate map of the solid material transport capacity of landslides on hillslopes, which was almost consistent with the findings of the field investigations. Compared with existing methods, the NDIH method has greater flexibility and applicability for revealing the potential of solid material transport on hillslopes in drainage systems in different geographical and climate regions. © The Author(s), under exclusive licence to Springer Nature B.V. 2024.
AUTHOR KEYWORDS: GIS; Landslide sediment; Remote sensing; Transport capacity; Wenchuan seismic region
INDEX KEYWORDS: GIS; hillslope; landslide; morphometry; remote sensing; seismic zone; spatial distribution; China; Sichuan; Wenchuan
REFERENCES: Becht, Michael, Investigating sediment cascades using field measurements and spatial modelling, 291, pp. 206-213, (2005); 
Borselli, L., Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical assessment, Catena, 75, 3, pp. 268-277, (2008); 
Bossi, Giulia, Multi-temporal LiDAR-DTMs as a tool for modelling a complex landslide: A case study in the Rotolon catchment (eastern Italian Alps), Natural Hazards and Earth System Sciences, 15, 4, pp. 715-722, (2015); 
Cai, Jiehua, Detection and characterization of slow-moving landslides in the 2017 Jiuzhaigou earthquake area by combining satellite SAR observations and airborne Lidar DSM, Engineering Geology, 305, (2022); 
Campforts, Benjamin, HyLands 1.0: A hybrid landscape evolution model to simulate the impact of landslides and landslide-derived sediment on landscape evolution, Geoscientific Model Development, 13, 9, pp. 3863-3886, (2020); 
Cavalli, Marco, Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments, Geomorphology, 188, pp. 31-41, (2013); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Chaoliang, Linkages between soil erosion and long-term changes of landscape pattern in a small watershed on the Chinese Loess Plateau, Catena, 220, (2023); 
Chen, Ming, Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake, Catena, 236, (2024); 
Chen, Ming, Identifying potential debris flow hazards after the 2022 Mw 6.8 luding earthquake in southwestern China, Bulletin of Engineering Geology and the Environment, 83, 6, (2024)
PUBLISHER: Springer Science and Business Media B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, H., Xu, Q., Cao, Y., Mu, X., Wang, T., Yan, S., Yang, H., Hua, J.
AUTHOR FULL NAMES: Wu, Hao (57831406200); Xu, Qi (57215207588); Cao, Yang (59980430800); Mu, Xiyu (54388078700); Wang, Tijian (59452815200); Yan, Shuqi (56704064300); Yang, Huadong (57202580592); Hua, Jiajia (57216728819)
57831406200; 57215207588; 59980430800; 54388078700; 59452815200; 56704064300; 57202580592; 57216728819
Forecasting and early warning technology development for general aviation meteorological hazards 通用航空气象灾害监测与预报预警技术新进展
(2025) Transactions of Atmospheric Sciences, 48 (2), pp. 340 - 351, Cited 0 times.
DOI: 10.13878/j.cnki.dqkxxb.20240813001
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010137300&doi=10.13878%2Fj.cnki.dqkxxb.20240813001&partnerID=40&md5=a20871020aee2f4d2466f6a3af1094cb

AFFILIATIONS: China Meteorological Administration, Beijing, China; China Meteorological Administration, Beijing, China; Jiangsu Air Traffic Management Branch Bureau of CAAC, Nanjing, China; School of Construction Engineering, Jiangsu Open University, Nanjing, Jiangsu, China; School of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu, China
ABSTRACT: General aviation (GA) has experienced significant growth in China since its formal definition in 1986. The enactment of the Civil Aviation Law of the People's Republic of China in 1995 further clarified GA as civil aviation activities outside public air transport, encompassing industrial, agricultural, humanitarian, and emergency services. This expansion has been driven by improvements in industry regulations, infrastructure development, and ongoing airspace reforms. However, meteorological services for GA remain a critical area for improvement. The 2008 Wenchuan earthquake underscored the vital role of GA in disaster relief, despite limitations in communication and meteorological support. Since then, GA has expanded into various sectors, including tourism, mapping, and logistics, making substantial contributions to economic and social development. By the end of 2022, China had 399 registered GA airports and 3 186 aircraft, with projections indicating an increase to 500 airports and 4. 5 million flight hours by 2025. This rapid growth necessitates enhanced meteorological services tailored to GA operations. Unlike commercial aviation, GA represents unique meteorological challenges due to diverse aircraft types, variable flight altitudes, and a heavy reliance on low-altitude weather conditions. These factors require highly localized, precise meteorological forecasts. However, China's current GA meteorological infrastructure is limited by insufficient observational equipment, incomplete data coverage, and inadequate forecasting capabilities-particularly for low-altitude operations. Internationally, significant advancements have been made in GA meteorological services. Numerical Weather Prediction (NWP) systems have improved through higher-resolution models and advanced data assimilation techniques. Observational technologies, such as Doppler radar and lidar, provide high-resolution data, enhancing forecast accuracy. Studies have demonstrated that advanced NWP systems and data assimilation techniques can significantly improve forecasts of small-scale weather phenomena, such as thunderstorms (Shun et al., 2009; Joe et al., 2022). Additionally, international efforts have focused on integrating multiple observational datasets and forecast models to provide comprehensive meteorological support for GA operations. In contrast, China's GA meteorological services remain underdeveloped. The current system lacks comprehensive observational networks, advanced forecasting capabilities, and efficient data-sharing platforms. Most GA air-ports have limited meteorological infrastructure, and available meteorological data are often insufficient for low-altitude operations. To address these challenges, it is essential to develop high-resolution meteorological products, enhance observational capabilities, and establish a unified meteorological information-sharing platform for GA. This paper reviews the current state and future trends of GA meteorological services, both domestically and internationally. It identifies key meteorological hazards affecting GA safety, including low-altitude wind shear, turbulence, typhoons, low visibility, thunderstorms, icing, and precipitation. Furthermore, it discusses the development of a GA meteorological warning and forecasting system, emphasizing real-time data integration, multi-source data fusion, and user-friendly meteorological products. The proposed GA meteorological service system aims to provide real-time meteorological data, integrate observational and forecasting capabilities, and offer personalized meteorological services for GA operations. This system will leverage modern technologies, including artificial intelligence, big data, and mobile applications, to enhance meteorological support. Future efforts will focus on improving the spatial and temporal resolution of meteorological products, developing region-specific meteorological services, and enhancing data-sharing mechanisms through integrated platforms. In conclusion, developing advanced GA meteorological services is essential for ensuring the safe and efficient operation of GA in China. By learning from international experiences and adopting advanced technologies, China can significantly improve its GA meteorological capabilities, thereby enhancing industry development and mitigating meteorological risks associated with GA operations. © 2025 Editorial Department of Transactions of Atmospheric Sciences. All rights reserved.
AUTHOR KEYWORDS: aviation meteorological services; forecasting and early warning; general aviation; meteorological disaster
REFERENCES: Aguiar, Marisa D., Rates and causes of accidents for general aviation aircraft operating in a mountainous and high elevation terrain environment, Accident Analysis and Prevention, 107, pp. 195-201, (2017); 
Aljawarneh, Shadi A., Meteorological forecasting based on big data analysis, ACM International Conference Proceeding Series, pp. 9-11, (2021); 
Mar Forecasts, (2015); 
Research in World Economy, (2017); 
Trans Atmos Sci, (2018); 
Blickensderfer, Beth L., Assessing General Aviation Pilots’ Understanding of Aviation Weather Products, International Journal of Aerospace Psychology, 27, 3-4, pp. 79-91, (2017); 
Bochenek, Bogdan, Machine Learning in Weather Prediction and Climate Analyses—Applications and Perspectives, Atmosphere, 13, 2, (2022); 
Boyd, Douglas D., In-flight decision-making by general aviation pilots operating in areas of extreme thunderstorms, Aerospace Medicine and Human Performance, 88, 12, pp. 1066-1072, (2017); 
Chrit, Mounir, Operational wind and turbulence nowcasting capability for advanced air mobility, Neural Computing and Applications, 36, 18, pp. 10637-10654, (2024); 
Domingo, Cassandra, Charting a Path Through the Storm: General Aviation Weather Training Recommendations, Proceedings of the Human Factors and Ergonomics Society, 66, 1, pp. 1824-1828, (2022)
PUBLISHER: Editorial Department of Transactions of Atmospheric Sciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiong, J., Chen, H., Tang, C., Tang, C., Chen, J., Yang, T., Gong, L., Chen, M., Shi, Q., Li, N.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Chen, Huayong (24385415200); Tang, Chuan (35932953300); Tang, Chenxiao (55486336700); Chen, Jiangang (56013367200); Yang, Tao (58761034900); Gong, Lingfeng (57215612725); Chen, Ming (57199453005); Shi, Qingyun (57217257328); Li, Ning (57211181445)
57217517892; 24385415200; 35932953300; 55486336700; 56013367200; 58761034900; 57215612725; 57199453005; 57217257328; 57211181445
A robust index was extracted to assess the prolonged changes in debris flow activity after a high magnitude earthquake
(2025) Catena, 250, art. no. 108733, Cited 1 times.
DOI: 10.1016/j.catena.2025.108733
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215382090&doi=10.1016%2Fj.catena.2025.108733&partnerID=40&md5=aa24f0541321a9184fcb22158876c152

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Geological Survey, Beijing, Beijing, China; Chengdu University of Information Technology, Chengdu, Sichuan, China; School of Emergency Management, Xihua University, Chengdu, Sichuan, China
ABSTRACT: In regions with strong earthquake disturbances, sufficient landslide sediments would activate debris flows for decades. As of 2024, although the Wenchuan earthquake has occurred 16 years ago, the nonuniform prolonged variation of post-quake debris flows is not fully understood owing to a lack of sufficient long-term monitoring data. In this study, a new debris flow activity index (DFAI) considering the effects of the landslide sediment supply, rainfall and topography, was proposed. The results of the DFAI reveal that post-quake debris flow activity continues to decline in a power pattern form and approximately decline toward the preseismic level for 50 years. The debris flow activity level was categorized into low, slight, medium, high and extreme levels on the basis of the DFAI and field investigations. The results of the debris flow activity assessment revealed that many debris flows experienced relatively high activity between 2008 and 2013, and gradually evolved from extreme to high levels at a rate of 0.06 yr−1. In contrast, debris flow activity rapidly declined after 2013, and changed from extreme and high levels to low, slight, and medium levels at rates of −0.06 yr−1 and −0.02 yr−1, respectively. Presently, approximately 59.32 % of the catchment has low and slight debris flow activity, but only 10 % of the catchment has high and extreme debris flow activity. The regions with higher debris flow activity have changed to the northern regions of the study area, and the larger catchment has relatively high debris flow activity. In addition, we validated the performance and robustness of the DFAI at sites with different geological environments and climates. In all, the DFAI can reduce the limitation of insufficient monitoring data and has good performance in reflecting nonuniform prolonged changes in debris flow activity. © 2025
AUTHOR KEYWORDS: Debris flow; DFAI; GIS; Landslide; Remote sensing
INDEX KEYWORDS: catchment; climate effect; debris flow; earthquake magnitude; environmental monitoring; geological structure; GIS; landslide; rainfall; remote sensing; sediment transport; China; Sichuan; Wenchuan
REFERENCES: De Baets, Sarah, Effects of grass roots on the erodibility of topsoils during concentrated flow, Geomorphology, 76, 1-2, pp. 54-67, (2006); 
Borselli, L., Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical assessment, Catena, 75, 3, pp. 268-277, (2008); 
Cavalli, Marco, Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments, Geomorphology, 188, pp. 31-41, (2013); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Chen, Ming, Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake, Catena, 236, (2024); 
Chen, Huayong, Catastrophic debris flow triggered by a June 26, 2023 rainstorm suggests the debris flow is still active 15 years after the Wenchuan seismic, Landslides, 21, 8, pp. 1883-1897, (2024); 
undefined, (1987); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Dai, Lanxin, Coseismic Debris Remains in the Orogen Despite a Decade of Enhanced Landsliding, Geophysical Research Letters, 48, 19, (2021)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lu, S., Wu, Z., Huang, T.
AUTHOR FULL NAMES: Lu, Shiming (59307260600); Wu, Zhonghai (55500643100); Huang, Ting (57227570600)
59307260600; 55500643100; 57227570600
Characteristics of geological hazard development and disaster-inducing environment of the MS6.2 earthquake in Jishishan, Gansu Province 甘肃积石山 MS6.2 地震地质灾害发育特征及孕灾环境分析
(2025) Journal of Geomechanics, 31 (1), pp. 139 - 155, Cited 2 times.
DOI: 10.12090/j.issn.1006-6616.2024069
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85219540900&doi=10.12090%2Fj.issn.1006-6616.2024069&partnerID=40&md5=36d2e936a643d883fc51931445ec925f

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China; Peking University, Beijing, China
ABSTRACT: [Objective] The M<inf>S</inf>6.2 earthquake that struck Jishishan County, Gansu Province, on December 18, 2023, triggered a series of secondary geological disasters, including landslides, collapses, and debris flows. This earthquake is considered one of the most devastating seismic events in China in recent years. The study aims to analyze the characteristics of seismicity-induced disasters in the region and identify the underlying geological factors contributing to these secondary geological hazards. Specifically, the research focuses on how the geological environment influences the development of these disasters, particularly landslides, collapses, and debris flows. This understanding will help to develop better disaster prevention and mitigation strategies for similar seismic regions. [Methods] To investigate these issues, the study uses a combination of field investigations, remote sensing image interpretation, and the analytic hierarchy process (AHP). The AHP was employed to evaluate the relative importance of five key factors—faults, lithology, vegetation cover, slope, and precipitation—in the formation of secondary geological hazards. The analysis also includes a detailed spatial distribution study of these factors and how they interact under seismic conditions. This multi-method approach provides a comprehensive understanding of the complex geological environment in Jishishan. [Results] Based on the integrated analysis, the secondary geological hazard zones of the study area are primarily concentrated along the front edge of Lajishan, closely aligned with the VIII seismic intensity zone of the Jishishan M<inf>S</inf>6.2 earthquake. Fewer hazard zones are located at the northern edge of Lijia Village, Guantan Village, and Manisigou Township. The higher-risk areas are centered around Jishishan County, extending eastward toward Lijia Village and Hanji Town. The secondary geological disaster points are concentrated in Jishishan County and the area surrounding it, particularly in valleys where Quaternary strata are abundant, forming a band-like distribution. Landslides are most prevalent in Jishishan County and Dahejia Town, where steep terrain, fragile geological structure, and significant rock weathering make the area vulnerable. The lack of vegetation exacerbates surface instability. Debris flows mainly occur in Baizang Town and around Jishishan, where steep slopes, concentrated rainfall, and abundant loose materials create ideal conditions for disaster. These debris flow sites are located near rivers or lakes, indicating that water flow and increased soil saturation are key factors triggering such events. Landslide sites are generally scattered but concentrated in areas of significant topographic change, following the Quaternary strata in valleys. These sites are denser near the Lajishan fault zone, showing the influence of fault proximity and rainfall on landslide occurrence. Each type of geological disaster exhibits distinct spatial patterns: landslides and debris flows are more likely to occur in areas with steep slopes and proximity to water bodies, while collapses tend to occur in exposed rock areas, influenced by local lithology. Evidently, the distribution of secondary geological hazards in the study area is primarily influenced by weak geological conditions, with seismic activity, vegetation, topography, and precipitation compounding the risk. Hazard zones are concentrated along the front of Lajishan, matching the VIII seismic intensity zone. The disaster sites are primarily located in valleys with dense fourth-level strata, confirming the consistency between the simulated and actual hazard zones. [Conclusion] To conclude, lithology was found to be the most significant factor influencing disaster formation, with a weight of 42%, followed by fault zones (26%). While precipitation had the least impact, contributing only 6%, it still played a role in increasing the risk of landslides and debris flows. The high-risk disaster areas correspond closely to the seismic intensity zone VIII, particularly around the earthquake epicenter, where the geological conditions are most conducive to these hazards. The distribution of secondary geological disasters in Jishishan is primarily controlled by the weak geological conditions of the region. Besides, compared to the Wenchuan earthquake, where disasters were concentrated along the hanging wall of reverse faults, the disaster sites in Jishishan were mainly located in the down-thrust areas of fault zones. Additionally, fewer disaster points were observed in aftershock zones, suggesting that the main shock alleviated a significant amount of tectonic stress, leading to regional stabilization. [Significance] This study highlights the relationship between geological factors and seismicity-induced secondary disasters in Jishishan, emphasizing the need for targeted monitoring and protective measures in areas with loose Quaternary deposits and steep slopes. The results provide valuable insight for disaster prevention strategies in Jishishan and other seismic regions with similar geological conditions. © 2025 Chinese Academy of Geological Sciences Institute of Geomechanics. All rights reserved.
AUTHOR KEYWORDS: disaster-prone environment; Jishishan earthquake; landslide; mudflow; spatial analysis
REFERENCES: Bai, Yuzhu, Simulations on displacement fields of ground surface in 2008 wenchuan earthquake: The case of inverse and right-lateral motion of yingxiu-beichuan fault, Dizhen Dizhi, 32, 1, pp. 16-27, (2010); 
China Earthq Eng J, (2024); 
Northwestern Seismological Journal, (2013); 
Geological Environment Evaluation of Abandoned Mines in Shenzhen City Based on GIS and AHP D, (2020); 
A Big Earth Data Platform for Three Poles, (2019); 
Gao, Bo, Development Feature and Risk Assessment of Geological Hazards Caused by the Ms 6.2 Earthquake in Jishishan County, Linxia, Gansu Province, Northwestern Geology, 57, 2, pp. 209-219, (2024); 
Overview of Disaster Prevention, (2025); 
Overview of Disaster Prevention, (2024); 
Journal of Lanzhou University Natural Sciences, (2024); 
Hubei Emergency Management, (2024)
PUBLISHER: Chinese Academy of Geological Sciences Institute of Geomechanics
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, J., Zhang, W., Lu, C., Zheng, Y., Liu, H., Li, W., Yin, H., Wang, J., Wang, Y.
AUTHOR FULL NAMES: Chen, Junqi (58064665200); Zhang, Wen (55706496300); Lu, Changwei (57283908800); Zheng, Yanhao (57216864862); Liu, Hongcheng (59154863000); Li, Wankun (57778913200); Yin, Han (57699515700); Wang, Jia (56298382700); Wang, Yindong (59508131500)
58064665200; 55706496300; 57283908800; 57216864862; 59154863000; 57778913200; 57699515700; 56298382700; 59508131500
Evolution and migration patterns of sediments in an earthquake-affected catchment in Wenchuan, Sichuan Province, China
(2025) Catena, 249, art. no. 108712, Cited 14 times.
DOI: 10.1016/j.catena.2025.108712
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85214585623&doi=10.1016%2Fj.catena.2025.108712&partnerID=40&md5=b257b490cf0798f77a65a8c7cf452e17

AFFILIATIONS: College of Construction Engineering, Jilin University, Changchun, Jilin, China; Jilin Province Water Resource and Hydropower Consultative Company of P R China, Changchun, China; Institute of Geological Survey of Jilin Province, Changchun, China; Harbin Institute of Technology, Harbin, Heilongjiang, China
ABSTRACT: Earthquakes of magnitude often contribute to changes in sediment availability, and those available sediments, once entrained by runoff, can lead to catastrophic debris flow events. Effective management of debris flow events in seismic areas relies on monitoring the changes in available sediments at the catchment scale and the movement mode of available sediments at the sedimentary deposits scale. For this reason, the present study integrates satellite remote sensing images, terrestrial 3D laser scanner, and field experiments to establish a monitoring framework across diverse spatial scales. This approach reveals the evolution and migration patterns of available sediments in the typical debris flow catchment Cutou gully in the Wenchuan earthquake area since the 2008 earthquake disaster. Accordingly, we can illuminate how sediment evolution responds to different disaster events and clarify the sediment migration patterns before and during debris flow disasters. It is found that the seismic events led to an increase in sediments available for mobilization within Cutou gully. For the available sediments involved in the debris flow, since some of the loosely consolidated active material sources were carried away by the debris flow, following the debris flow, they were more stable compared to those not involved in the debris flow. Available sediments migrated from the upper slopes with higher elevation to the debris flow channel with lower elevation due to surface runoff before and during the debris flow. Localized collapse at the toe of the sedimentary deposits occurred continuously in a retrogressive manner, mainly due to lateral erosion of the channel bank, which complements the magnitude of the debris flow. © 2025 Elsevier B.V.
AUTHOR KEYWORDS: Migration patterns; Sediment evolution; Sediment monitoring; Wenchuan earthquake
INDEX KEYWORDS: catchment; debris flow; earthquake; migration; mobilization; remote sensing; runoff; China; Sichuan; Wenchuan
REFERENCES: Barbini, Matteo, An alternative approach for the sediment control of in-channel stony debris flows with an application to the case study of Ru Secco Creek (Venetian Dolomites, Northeast Italy), Frontiers in Earth Science, 12, (2024); 
Bardou, Éric, Properties of debris flow deposits and source materials compared: Implications for debris flow characterization, Sedimentology, 54, 2, pp. 469-480, (2007); 
Bardou, Éric, Impact of small amounts of swelling clays on the physical properties of debris-flow-like granular materials. Implications for the study of alpine debris flow, Earth Surface Processes and Landforms, 32, 5, pp. 698-710, (2007); 
Bernard, M., Deposition areas: An effective solution for the reduction of the sediment volume transported by stony debris flows on the high-sloping reach of channels incising fans and debris cones, Earth Surface Processes and Landforms, 49, 2, pp. 664-683, (2024); 
Boreggio, Mauro, Does the topographic data source truly influence the routing modelling of debris flows in a torrent catchment?, Earth Surface Processes and Landforms, 47, 8, pp. 2107-2129, (2022); 
Bovis, Michael J., The role of debris supply conditions in predicting debris flow activity, Earth Surface Processes and Landforms, 24, 11, pp. 1039-1054, (1999); 
Cândido, Bernardo Moreira, High-resolution monitoring of diffuse (sheet or interrill) erosion using structure-from-motion, Geoderma, 375, (2020); 
Castillo, Carlos, Comparing the accuracy of several field methods for measuring gully erosion, Soil Science Society of America Journal, 76, 4, pp. 1319-1332, (2012); 
Oss-Cazzador, D., Integrated analysis of sediment source areas in an Alpine basin, Catena, 188, (2020); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xue, H., Wang, H., Deng, L., Li, K., Cai, J.
AUTHOR FULL NAMES: Xue, Hao (59542593300); Wang, Hu (35575025100); Deng, Lin (35239863100); Li, Kaijin (57216752355); Cai, Jinlong (59542431600)
59542593300; 35575025100; 35239863100; 57216752355; 59542431600
Near-Fault Tilted Deformation of Buildings Associated with Coseismic Surface Ruptures in the Shenxigou Section, 2008 Mw 7.9 Wenchuan Earthquake, Eastern Tibet
(2025) Lithosphere, 2025 (1), art. no. lithosphere_2024_207, Cited 0 times.
DOI: 10.2113/2025/lithosphere_2024_207
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216919912&doi=10.2113%2F2025%2Flithosphere_2024_207&partnerID=40&md5=57fe93a91d3449e55a92b24bbc20ecc0

AFFILIATIONS: Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; Sichuan Province Engineering Technology Research Center of Ecological Mitigation of Geohazards in Tibet Plateau Transportation Corridors, Chengdu, China
ABSTRACT: The coseismic surface ruptures associated with large earthquakes contribute to severe damage to near-fault buildings through fault deformation. However, previous studies simplified geological conditions and were based mainly on numerical and physical simulations. In other words, the scarcity of large earthquakes, especially for active thrust faults, limits the understanding of the mechanisms of building damage near active faults. Herein, the study selected the 2008 Mw7.9 Wenchuan earthquake as an example. Based on compass measurements, unmanned aerial vehicle data, ground-based lidar mapping, and numerical simulation, the study showed that twelve buildings within the two sides of the fault were damaged by tilted deformation. The study suggests that the closer the buildings are to the fault, the greater the tilted deformation of the buildings. Moreover, the degree of tilted deformation of the buildings on the hanging wall is significantly greater than that on the footwall, indicating an asymmetric characteristic. Furthermore, the azimuth of the tilted deformation of all buildings is consistent toward the northwest and nearly perpendicular to the strike of the coseismic surface rupture, which indicates that the tilted damage to the buildings might be primarily influenced by the thrust deformation. In addition, the simulation results reveal that parameters such as the distance from the fault, angle of the fault, thickness and strength of the sediment can affect the tilted deformation of near-fault buildings. The results enable us to better understand the influence mechanisms of the tilted damage of near-fault buildings and provide a scientific basis for the avoidance of active thrust faults. © 2025. Hao Xue et al.
INDEX KEYWORDS: Antenna grounds; Buildings; Earthquake engineering; Faulting; Unmanned aerial vehicles (UAV); Active fault; Aerial vehicle; Building damage; Coseismic surface rupture; Geological conditions; Large earthquakes; Near-fault; Physical simulation; Thrust faults; Wenchuan Earthquake; Earthquakes; azimuth; building; earthquake damage; earthquake rupture; hanging wall; lidar; simulation; thrust fault; China; Sichuan; Wenchuan
REFERENCES: Mechanics of Earthquakes and Faulting, (2002); 
Wen, Xuezez Ze, Frequency-magnitude relationship models for assessment of maximum magnitudes of potential earthquakes on moderately and weakly active faults in eastern China mainland, Dizhen Dizhi, 29, 2, pp. 236-253, (2007); 
Chen, Guihua, Quantitative analysis of the co-seismic surface rupture of the 2008 Wenchuan earthquake, Sichuan, China along the Beichuan-Yingxiu fault, Dizhen Dizhi, 30, 3, pp. 723-738, (2008); 
Li, Haibing, The surface rupture zone distribution of the Wenchuan earthquake (Ms8.0) happened on May 12th, 2008, Geology in China, 35, 5, pp. 803-813, (2008); 
Wu, Faquan, Initial analysis of the mechanism of the Wenchuan Earthquake (Southwest China), 12 May 2008, Bulletin of Engineering Geology and the Environment, 67, 4, pp. 453-455, (2008); 
Huang, Runqiu, Engineering geological evaluation of reconstruction sites following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 4, pp. 449-458, (2009); 
Wang, Yunsheng, Secondary seismic fractures activated during the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 4, pp. 443-447, (2009); 
Xiwei, Xu, Coseismic reverse- and oblique-slip surface faulting generated by the 2008 Mw 7.9 Wenchuan earthquake, China, Geology, 37, 6, pp. 515-518, (2009); 
Quaternary Sciences, (2009); 
Prog Geophys, (2017)
PUBLISHER: Geoscienceworld
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Deng, Q., Xu, L., Zhang, L., Li, P., Ding, N., Chen, Q.
AUTHOR FULL NAMES: Deng, Qinghai (55430918200); Xu, Lulu (59349954500); Zhang, Liping (54386397500); Li, Ping (59997703900); Ding, Ning (59998580000); Chen, Qiao (44360933000)
55430918200; 59349954500; 54386397500; 59997703900; 59998580000; 44360933000
Spatio-temporal distribution evolution and factors controlling landslides in Beichuan County after Wenchuan earthquake
(2025) Acta Scientiarum - Technology, 47 (1), art. no. e70856, Cited 0 times.
DOI: 10.4025/actascitechnol.v47i1.70856
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010719131&doi=10.4025%2Factascitechnol.v47i1.70856&partnerID=40&md5=8487dd204a69191b7a053447fa2435a9

AFFILIATIONS: College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China; Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources of the People's Republic of China, Beijing, China; Ltd., Qingdao, Shandong, China
ABSTRACT: The earthquake triggered numerous secondary geological disasters, mainly landslides, which can have considerable impact on the environment as well as people's lives in the affected region. In this research, to obtain clear understanding of the restoration level and the evolution of landslides after an earthquake as massive as the Wenchuan earthquake, Beichuan County of Sichuan Province was considered an example, and the development characteristics and the evolution of post-earthquake landslides in the affected area were studied. Using ALOS, GF-1, and ZY-3 remote sensing images and GIS technology, the development of landslides in Beichuan County over a period of 13 years (2007–2019), comprising the period before and after the Wenchuan earthquake, was analysed. The main inducing factors of landslides before and after the disaster were discussed from many aspects. After the Wenchuan earthquake, the number and the area affected by landslides in Beichuan County drastically increased. Five years after the earthquake, there was rapid recovery in the development of landslides; however, it has not fully returned to the state before the earthquake yet. Many landslides have also occurred in medium-and high-altitude areas and medium-and high-slope areas. However, as time goes on, the high-risk areas of landslides began to migrate slowly to areas with lower altitude and gentle slope. Before the earthquake, river erosion was the main cause of landslides in the study area. After the earthquake, landslides were concentrated in the southeast and central parts of this area—places with strong earthquake intensities—which was attributed to seismogenic faults. With the recovery of landslide development, river erosion became the main contributing factor again. The findings of this research can provide insights to aid disaster prevention in the Wenchuan earthquake-stricken area and the spatio-temporal evolution of landslide disaster development in earthquake-stricken areas. © 2025, Eduem - Editora da Universidade Estadual de Maringa. All rights reserved.
AUTHOR KEYWORDS: Beichuan County; evolution; landslide; restoration level; Wenchuan earthquake
REFERENCES: Aditian, Aril, Comparison of GIS-based landslide susceptibility models using frequency ratio, logistic regression, and artificial neural network in a tertiary region of Ambon, Indonesia, Geomorphology, 318, pp. 101-111, (2018); 
Chen, Hongxin, A physically-based distributed cell model for predicting regional rainfall-induced shallow slope failures, Engineering Geology, 176, pp. 79-92, (2014); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Xiaoli, Evaluation of factors controlling large earthquake-induced landslides by the Wenchuan earthquake, Natural Hazards and Earth System Sciences, 12, 12, pp. 3645-3657, (2012); 
Chen, Yulong, Development of elastic wave velocity threshold for rainfall-induced landslide prediction and early warning, Landslides, 16, 5, pp. 955-968, (2019); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Deng, Qinghai, Simulating dynamic processes and hypermobility mechanisms of the Wenjiagou rock avalanche triggered by the 2008 Wenchuan earthquake using discrete element modelling, Bulletin of Engineering Geology and the Environment, 76, 3, pp. 923-936, (2017); 
Di Martire, Diego, A nation-wide system for landslide mapping and risk management in Italy: The second Not-ordinary Plan of Environmental Remote Sensing, International Journal of Applied Earth Observation and Geoinformation, 63, pp. 143-157, (2017)
PUBLISHER: Eduem - Editora da Universidade Estadual de Maringa
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Fan, J., Wu, J., Zhou, K., Liu, B.
AUTHOR FULL NAMES: Fan, Jie (36160843800); Wu, Jianxiong (57215604589); Zhou, Kan (57725448500); Liu, Baoying (55797248000)
36160843800; 57215604589; 57725448500; 55797248000
The variation of natural carrying capacity and its research progress adapting to decision-making application in China
(2025) Fundamental Research, Cited 3 times.
DOI: 10.1016/j.fmre.2023.05.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105003378339&doi=10.1016%2Fj.fmre.2023.05.017&partnerID=40&md5=a2a7dcdd2753570b6d2805176b972b75

AFFILIATIONS: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Institutes of Science and Development, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: While “planetary boundaries” have become the focus of international research, Chinese scholars have been committed to studying the natural carrying capacity (NCC) at both national and regional scales. China's population exploded in the 1970s, and research on how many people the land could support became the basis for family planning decisions. The 2008 Wenchuan Earthquake raised the need for debate on the scale and site selection of post-disaster reconstruction, prompting a renewed focus on NCC research. With the application of NCC research in spatial planning and policies, research on China's NCC continues to flourish. Progress has been made: the expression of the original, remaining, and potential value of NCC, the differentiated carrying capacity evaluation methods oriented towards different territorial functions, the territorial function suitability generated from the extension of NCC, and the monitoring and early warning of regional sustainability based on changes in NCC. It also finds that the distribution of China's water and land resources mismatch, ​the environmental capacity is overloaded in urbanized areas, and over half of the country has a relatively high ecological sensitivity, posing great challenges to China's future modernization. Other than technological progress and environmental governance, methods of artificially increasing the NCC pose ecological risks. © 2023 The Authors
AUTHOR KEYWORDS: Natural carrying capacity; Resource and environment; Risk forewarning; Spatial planning and governance; Sustainability; Territorial function
REFERENCES: Arrow, Kenneth J., Economic growth, carrying capacity, and the environment, Ecological Economics, 15, 2, pp. 91-95, (1995); 
Cohen, Joel E., Population growth and earth's human carrying capacity, Science, 269, 5222, pp. 341-346, (1995); 
Simon, Julian L., Resources, population, environment: An oversupply of false bad news, Science, 208, 4451, pp. 1431-1437, (1980); 
Holdren, John P., Bad news: Is it true? [3], Science, 210, 4476, pp. 1296-1301, (1980); 
van den Bergh, Jeroen C.J.Mvan, Spatial sustainability, trade and indicators: An evaluation of the 'ecological footprint, Ecological Economics, 29, 1, pp. 61-72, (1999); 
White, David J., The Water-Energy-Food Nexus in East Asia: A tele-connected value chain analysis using inter-regional input-output analysis, Applied Energy, 210, pp. 550-567, (2018); 
Dearing, John A., Safe and just operating spaces for regional social-ecological systems, Global Environmental Change, 28, 1, pp. 227-238, (2014); 
Limits to Growth A Report for the Club of Rome S Project on the Predicament of Mankind, (1972); 
undefined, (1994); 
Sayre, Nathan F., The genesis, history, and limits of carrying capacity, Annals of the Association of American Geographers, 98, 1, pp. 120-134, (2008)
PUBLISHER: KeAi Communications Co.
DOCUMENT TYPE: Review
PUBLICATION STAGE: aip
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, D., Liu, L., Luo, C., Wen, X., Li, Y., Ren, D., Tang, W.
AUTHOR FULL NAMES: Wang, Defu (59172717000); Liu, Li (59172815700); Luo, Chao (57841999400); Wen, Xuehu (59702060700); Li, Yongxin (59172617300); Ren, Dongyu (59701886900); Tang, Wei (56461832300)
59172717000; 59172815700; 57841999400; 59702060700; 59172617300; 59701886900; 56461832300
Application of multi-source remote sensing technologies in identification and evolution mechanism analysis of creep landslides: a case study of Shibatai landslide in Wenchuan earthquake area
(2025) Frontiers in Earth Science, 13, art. no. 1498028, Cited 0 times.
DOI: 10.3389/feart.2025.1498028
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105000504847&doi=10.3389%2Ffeart.2025.1498028&partnerID=40&md5=db84a98a940cc83817d0ed560bb3d11f

AFFILIATIONS: Third Institute of Geoinformation Mapping, Ministry of Natural Resources of the People's Republic of China, Beijing, China; Key Laboratory of Digital Cartography and Land Information Application, Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: Slow-moving landslides pose significant long-term hazards in seismically active mountainous regions. However, their subtle deformation patterns and complex internal structures present challenges for accurate identification and monitoring using conventional methods. This study integrates remote sensing technologies, including InSAR, DIC, LiDAR, and UAV photogrammetry, to comprehensively analyze the Shibatai creep landslide in the Wenchuan earthquake-affected area. Results reveal that the landslide exhibits a four-stage evolution process, from initial gravity-induced creep to earthquake disturbance, rainfall influence, and multi-level sliding formation. The study identifies six secondary sliding bodies within the landslide, with the most intense deformation occurring at their boundaries. Notably, DIC and UAV technologies demonstrated superior performance in detecting significant deformation features, aligning closely with field observations. The research proposes a multi-scale, multi-technology combination strategy for landslide investigation, emphasizing the complementary nature of different remote sensing techniques. Furthermore, the study highlights the importance of focusing on main deformation areas, particularly at the boundaries of secondary blocks, for efficient field verification and monitoring. These findings provide valuable insights for refining landslide identification processes, optimizing monitoring strategies, and enhancing risk assessment in post-earthquake environments. © © 2025 Wang, Liu, Luo, Wen, Li, Ren and Tang.
AUTHOR KEYWORDS: application inspiration; creep landslide; multi-source remote sensing; refined identification; Wenchuan earthquake area
INDEX KEYWORDS: earthquake event; earthquake magnitude; landslide; lidar; photogrammetry; risk assessment; seismic source; China; Sichuan; Wenchuan
REFERENCES: Berardino, Paolo, A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms, IEEE Transactions on Geoscience and Remote Sensing, 40, 11, pp. 2375-2383, (2002); 
Bickel, Valentin Tertius, Quantitative assessment of digital image correlation methods to detect and monitor surface displacements of large slope instabilities, Remote Sensing, 10, 6, (2018); 
Le Bivic, Réjanne, Potential and limitation of SPOT-5 ortho-image correlation to investigate the cinematics of landslides: The example of "Mare à Poule d'Eau" (Réunion, France), Remote Sensing, 9, 2, (2017); 
Caporossi, Paolo, Digital image correlation (DIC) analysis of the 3 December 2013 Montescaglioso landslide (Basilicata, southern Italy): Results from a multi-dataset investigation, ISPRS International Journal of Geo-Information, 7, 9, (2018); 
Casagli, Nicola, Landslide detection, monitoring and prediction with remote-sensing techniques, Nature Reviews Earth and Environment, 4, 1, pp. 51-64, (2023); 
Choi, Shinkyu, Multi-source remote sensing-based landslide investigation: the case of the August 7, 2020, Gokseong landslide in South Korea, Scientific Reports, 14, 1, (2024); 
Dai, Keren, Identification and evaluation of the high mountain upper slope potential landslide based on multi-source remote sensing: the Aniangzhai landslide case study, Landslides, 20, 7, pp. 1405-1417, (2023); 
Ding, Chao, Spatio-temporal error sources analysis and accuracy improvement in Landsat 8 image ground displacement measurements, Remote Sensing, 8, 11, (2016); 
Ding, Chao, Displacement history and potential triggering factors of Baige landslides, China revealed by optical imagery time series, Remote Sensing of Environment, 254, (2021); 
Dong, Xiujun, Identifying Potential Landslides on Giant Niexia Slope (China) Based on Integrated Multi-Remote Sensing Technologies, Remote Sensing, 14, 24, (2022)
PUBLISHER: Frontiers Media SA
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Hua, C.-Y., Shi, F., Wei, Z.-Y.
AUTHOR FULL NAMES: Hua, Chunyu (59359603200); Shi, Feng (57202464002); Wei, Zhanyu (36112505700)
59359603200; 57202464002; 36112505700
STUDY ON THE SLIP RATE OF THE BAISHA RIVER SEGMENT IN THE YINGXIU-BEICHUAN FAULT IN THE LONGMENSHAN FAULT ZONE 龙门山断裂带映秀－北川断裂白沙河段滑动速率
(2024) Dizhen Dizhi, 46 (6), pp. 1295 - 1313, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2024.06.005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216296699&doi=10.3969%2Fj.issn.0253-4967.2024.06.005&partnerID=40&md5=6dd724fb251d5aca7e815f9f13c0a5a7

AFFILIATIONS: State Key Laboratorj of Earthquahe Dynamics, China Earthquahe Administration, Beijing, China; Shanxi Taiyuan Continental Rift Dynamics National Observation and Research Station, Beijing, Shanxi, China
ABSTRACT: The tectonic belt Stretches approximately 400km from Lushan County to Wenchuan County in an east-west direction. The Longmenshan fault zone can be geometrically divided into several sections, including the Houshan Fault, the Central Fault, the Qianshan Fault, and the Foreland Basin (Chengdu Piain) Deformation Zone. The Central Fault is the main segment of the active tectonic belt in the Longmenshan region, and the Yingxiu-Beichuan Fault is one of the most active Segments within this central section. The Yingxiu-Beichuan Fault has experienced numerous moderate and strong earthquakes throughout its history, including the Wenchuan earthquake 2008. The 2008 Wenchuan earthquake was ahigh destructive natural disaster that profoundly impacted the Chinese mainland, leading to significant economic losses and casualties. This earthquake caused extensive building collapses, leading to the loss of tens of thousands of lives, and triggered severe secondary geological disasters such as landslides, rockfalls, and mudflows, severely affecting the normal Operation of transportation and communication infrastructure. The Yingxiu-Beichuan Fault was one of the key surface rupture zones during this earthquake. However, there is still some uncertainty about the slip rate of this fault.The Baisha River segment examined in this paper is located in the southern part of the Yingxiu-Beichuan Fault, measuring approximately 14km long. This area contains 14 fractures of varying lengths and complex geometric structures, forming a fracture zone that reaches a maximum width of nearly 300m. The Overall orientation of the rupture zone is about 50 degrees; however, the orientation of each small secondary rupture varies, with differences ranging from 0 to 90 degrees. The coseismic displacement along the Baisha River section displays complexity and diversity. The thrust movement primarily occurs on the northern and western walls, with some local thrust faults. Additionally, the strike-slip motion is predominantly right-lateral, exhibiting a maximum horizontal displacement of approximately 4. 8m, although some local areas show left-lateral displacement.Previous studies have employed various techniques, such as geology and geodesy, resulting in a wide ränge of slip rate estimates from 0. 07mm/a to 1. lmm/a. The slip rate of fault is a crucial factor for analyzing the characteristios of fault aotivity and for studying regional kinematics and dynamic mechanisms. Acoording to river terrace longitudinal profiles estimates, the fault has a vertical slip rate of about 0. 3mm/a to 0. 6mm/a. Estimates based on displaced landforms indicate a vertical slip rate between 0. 07mm/a and 1. lmm/a. According to GPS observations, the horizontal slip rate in the Longmenshan fault zone has a limit of 2mm/a, but the slip rate of individual faults is lower than 0. 7mm/a.In recent years, remote sensing techniques have been extensively utilized to study surfaee rupture zones, partieularly during significant seismic events. This paper primarily employs aerial and QuickBird satellite images captured before and after the earthquake. The resolution of the aerial images is nearly Im, while the QuickBird satellite images have a resolution of 0. 6m, both of which allow for precise Interpretation of tectonic landforms. Biver terraces consist of terraced Units, including terraced surfaces, steep terraces, terrace fronts, and terrace backs. As geomorphic markers that are relatively easy to identify and measure, river terraces are among the most essential geomorphic units in the quantitative study of active tectonics. They also serve as crucial geological relics documenting Quaternary tectonic movements and climate changes. By examining river terraces and their deformations, researchers can discuss the timing and Scale of tectonic activity, making this a long-term area of research.This paper focuses on the Baisha Biver section, situated in the southern part of the Yingxiu-Beichuan Fault. We employed geological and geomorphological methods along with optically stimulated luminescence dating, remote sensing Interpretation, field investigations, and data analysis to assess the slip rate of the Baisha Biver section of the Yingxiu-Beichuan Fault within the Longmenshan fault zone. Additionally, we analyze the spatio-temporal Variation characteristics of this slip rate. This study constrains the slip rate of the Baishahe segment of the Yingxiu-Beichuan Fault in the Longmenshan fault zone using 10 terrace cross-sections and terrace ages. The results indicate that the Yingxiu-Beichuan Fault Baisha Biver segment has a vertical slip rate since the Late Pleistocene ranges from (0. 10±0. 02)mm/a to (0. 30±0. 05) mm/a. Considering that only one event, the 2008 Wenchuan earthquake, is associated with the Tl terrace, we believe the calculated rate based on the dislocation and age of the Tl terrace may significantly deviate from reality. If we exclude the sliding rate of the Tl terrace, the vertical slip rate since the late Quaternary ranges between (0. 10± 0. 03) mm/a and (0. 30±0. 05) mm/a. The linear fitting results indicate that the average vertical sliding rate since the late Quaternary is approximately 0. 19mm/a.These findings provide fundamental data for understanding the seismogenic structure of the Wenchuan earthquake and the Overall characteristics of the Longmenshan fault zone, as well as for assessing its long-term seismic hazard. © 2024 State Seismology Administration. All rights reserved.
AUTHOR KEYWORDS: Baisha Biver segment; Longmenshan fault zone; slip rates; Yingxiu-Beichuan Fault
INDEX KEYWORDS: Earthquake engineering; Fault slips; Geochronology; Levees; Radio navigation; Strike-slip faults; Structural geology; Active tectonics; Baisha biver segment; Longmenshan fault zone; River segments; River terraces; Rupture zone; Slip rates; Tectonic belts; Wenchuan Earthquake; Yingxiu-beichuan fault; Earthquakes; basement (building); climate change; dislocation; displacement; earthquake event; earthquake rupture; fault zone; fracture zone; GPS; luminescence dating; natural disaster; Pleistocene; Quaternary; QuickBird; remote sensing; river terrace; slip rate; China; Longmenshan Fault Zone; Sichuan
REFERENCES: Quaternary Sciences, (1998); 
Deng, Qidong, Some thoughts on the Ms 8.0 Wenchuan, Sichuan earthquake, Dizhen Dizhi, 30, 4, pp. 811-827, (2008); 
Seismology and Geology, (1994); 
Scientia Geologica Sinica, (1973); 
An Introduction to the Dynamics of Lithosphere in China, (1991); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
He, Honglin, Some problems of aerial photo interpretation in active fault mapping, Dizhen Dizhi, 33, 4, pp. 938-950, (2011); 
He, Honglin, Rupture of the MS8.0 Wenchuan earthquake along Baishahe River, Dizhen Dizhi, 30, 3, pp. 658-673, (2008); 
Geological Journal of China Universities, (2003); 
Jia, Qiupeng, Active tectonics in the Longmen thrust belt to the eastern Qinghai-Tibetan plateau and Sichuan Basin: Evidence from topography and seismicity, Scientia Geologica Sinica, 42, 1, pp. 31-44, (2007)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, H., Chang, M., Tang, L., Wang, G., Li, L., Xia, Z., Zhu, X., Ni, Z.
AUTHOR FULL NAMES: Li, Hongjie (59458550900); Chang, Ming (36727157900); Tang, Liangliang (57764447300); Wang, Gaofneg (59529374300); Li, Linze (59137895700); Xia, Zhe (59529225800); Zhu, Xisong (59225922200); Ni, Zhang (57868245000)
59458550900; 36727157900; 57764447300; 59529374300; 59137895700; 59529225800; 59225922200; 57868245000
Potential chain disaster evolution process of debris flow blockage and dam failure floods in the Bailong River basin 白龙江流域潜在泥石流堵江 -溃决洪水链式灾害演进过程
(2024) Bulletin of Geological Science and Technology, 43 (6), pp. 196 - 211, Cited 0 times.
DOI: 10.19509/j.cnki.dzkq.tb20240168
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216091444&doi=10.19509%2Fj.cnki.dzkq.tb20240168&partnerID=40&md5=bb8679b690e9f3c581b32a0e43e17b22

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Center For Hydrogeology and Environmental Geology Survey,CGS, 保定市, China
ABSTRACT: [Objective] In the aftermath of the " 5. 12" Wenchuan earthquake, the frequency of chain disasters, precipitated by debris flow blockages and subsequent breaching floods, significantly increased in the Bailong River basin. The region′s distinctive geological conditions, characterized by numerous towns situated on canyon terraces and debris flow accumulation fans, further exacerbate its susceptibility to such chain disasters. This study aims to investigate the potential risks associated with debris flow blockages and flood chain disasters in the Bailong River basin, with a specific focus on the Zhaizi gully debris flow in Bailong River basin, Zhouqu County, Gansu Province. The objective is to elucidate the disaster-breeding characteristics, disaster-inducing conditions, and evolution patterns of the Zhaizi gully debris flow chain disaster, while also delineating the threat range posed by these chain disasters. [Methods] Through remote sensing interpretation and field surveys, a comprehensive database encompassing the topography, geomorphology, and material sources of the Zhaizi gully debris flow was established. This facilitated the identification of the development characteristics and various physical and mechanical parameters of the debris flow. Using the FLO-2D and HEC-RAS models, numerical simulations were performed under different rainfall frequencies (P = 1%, 2%), yielding key parameters such as depth, flow velocity, and the threat range of the debris flow and breaching floods. These parameters facilitated the analysis of hazard intensity and potential risks associated with debris flows and breaching floods. [ Results] Under a 100-year rainfall frequency, the maximum flow velocity of the Zhaizi gully debris flow can reach 11. 96 m / s. The average thickness of the debris dam formed is approximately 10 m, leading to complete blockage of the Bailong River and the formation of a dammed lake with a capacity of 6. 26 km3. The evolution of the breaching flood lasts approximately 12 hours, with the peak flow occurring about 30 minutes after breach. The impact range of the breaching flood extends from the downstream area of Fengdie Town in Zhouqu County, Gannan, along the main stream of the Bailong River, to the upstream section of Jigan Township in Wudu District, Longnan City, covering an area of 56. 36 km2 and spanning a distance of approximately 97. 4 km. Based on the simulation results, a preliminary discussion was conducted on a comprehensive risk prevention and control model for basin-wide debris flow disaster chains, integrating monitoring and mitigation measures. [Conclusion] This study highlights the limitations of traditional models in flood disaster assessment and enhances the understanding of cascading hazards induced by debris flow blockages. The findings provide valuable insights for the risk assessment and engineering design of mitigation projects for similar debris flow disaster chains in the middle and lower reaches of the Bailong River basin. © Editorial Office of Bulletin of Geological Science and Technology.
AUTHOR KEYWORDS: Bailong River basin; dammed lake; debris flow; disaster chain; evolving process; river blocking; Zhaizi gully; Zhouqu County, Gansu Province
REFERENCES: Wang, Gaofeng, Study on the formation mechanism and risk prediction of high-level accumulation landslides in Bailongjiang River Basin，Gansu Province, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 42, 4, pp. 1003-1018, (2023); 
Mar Geol Quat Geol, (2013); 
Xiong, Jiang, How landslide sediments are transferred out of an alpine basin: Evidence from the epicentre of the Wenchuan earthquake, Catena, 208, (2022); 
Cao, Zhixian, Computational Dam-Break Hydraulics over Erodible Sediment Bed, Journal of Hydraulic Engineering, 130, 7, pp. 689-703, (2004); 
Yang, Qiang, Formation conditions and the disaster modes of debris flows along middle and upper reaches of the Bailongjiang River Basin, Chinese Journal of Geological Hazard and Control, 33, 6, pp. 70-79, (2022); 
Wang, Lei, Two multi-temporal datasets to track debris flow after the 2008 Wenchuan earthquake, Scientific Data, 9, 1, (2022); 
Zhao, Cheng, The disaster mode of rainstorm debris flow happened in Zhouqu County on August 8, 2010, Northwestern Geology, 44, 3, pp. 63-70, (2011); 
Pang, Haisong, Hazard assessment of debris flow induced by short-time heavy rainfall based on RAMMS numerical simulation, Bulletin of Geological Science and Technology, 43, 2, pp. 215-225, (2024); 
Zeng, Peng, Parameter Back Analysis and Stability Prediction of Loess Landslide Based on NSGA-II Genetic Algorithm, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 48, 5, pp. 1675-1685, (2023); 
Tan, Daoyuan, Numerical study of retention efficiency of a flexible barrier in mitigating granular flow comparing with large-scale physical modeling test data, Acta Geotechnica, 16, 2, pp. 433-448, (2021)
PUBLISHER: Editorial Department of Bulletin of Geological Science and Technology
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, J., Wang, W., Cai, J., Wu, Z., Wang, X., Feng, H., Yao, Y., Xiang, H., Luo, X.
AUTHOR FULL NAMES: Fan, Jing (59197830300); Wang, Weihong (55192869600); Cai, Jialun (57210947398); Wu, Zhouhang (59197830400); Wang, Xiaomeng (59426201100); Feng, Hui (59198314600); Yao, Yitong (59426783400); Xiang, Hongyao (59426108400); Luo, Xinlong (59198073300)
59197830300; 55192869600; 57210947398; 59197830400; 59426201100; 59198314600; 59426783400; 59426108400; 59198073300
Deformation Monitoring and Analysis of Beichuan National Earthquake Ruins Museum Based on Time Series InSAR Processing
(2024) Remote Sensing, 16 (22), art. no. 4249, Cited 0 times.
DOI: 10.3390/rs16224249
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85210296235&doi=10.3390%2Frs16224249&partnerID=40&md5=61e030a4418611732520530b2ffd8000

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China; The National Remote Sensing Center of China, Mianyang, Sichuan, China; School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China
ABSTRACT: Since the Wenchuan earthquake in 2008, Old Beichuan County-town has experienced significant subsidence due to the disruption of the geological environment and the concurrent increase in precipitation. The ongoing land surface deformation poses a threat to the preservation and utilization of the Beichuan National Earthquake Ruins Museum (BNERM), as well as to the safety of urban residents’ lives. However, the evolutionary characteristics of surface deformation in these areas remain largely unexplored. Here, we focused on the BNERM control zone and employed the small-baseline subset interferometric synthetic aperture radar (SBAS-InSAR) technique to accurately measure land surface deformation and its spatiotemporal changes. Subsequently, we integrated this data with land cover types and precipitation to investigate the driving factors of deformation. The results indicate a slight overall elevation increase in the study area from June 2015 to May 2023, with deformation rates varying between −35.2 mm/year and 22.9 mm/year. Additionally, four unstable slopes were identified within the BNERM control zone. Our analysis indicates that surface deformation in the study area is closely linked to changes in land cover types and precipitation, exhibiting a seasonal cumulative pattern, and active geological activity may also be a cause of deformation. This study provides invaluable insights into the surface deformation characteristics of the BNERM and can serve as a scientific foundation for the protection of earthquake ruins, risk assessment, early warning, and disaster prevention measures. © 2024 by the authors.
AUTHOR KEYWORDS: deformation monitoring; earthquake ruins; time series InSAR; unstable slopes
INDEX KEYWORDS: Earthquake effects; Geochronology; Hydrogeology; Miocene; Control zones; Deformation monitoring; Earthquake ruin; Land surface; Land-cover types; Study areas; Surface-deformations; Time series InSAR; Times series; Unstable slope; Risk assessment
REFERENCES: J Urban Plan, (2009); 
Huang, Yu, Secondary geological hazard analysis in Beichuan after the Wenchuan earthquake and recommendations for reconstruction, Environmental Earth Sciences, 66, 4, pp. 1001-1009, (2012); 
Gong, Lixia, Earthquake-induced building damage detection with post-event sub-meter VHR terrasar-X staring spotlight imagery, Remote Sensing, 8, 11, (2016); 
Luo, Ziyan, Assessing surface deformation in the Chengdu Plain: A comprehensive time-series InSAR study of urban development and natural environmental factors, Advances in Space Research, 73, 3, pp. 1780-1798, (2024); 
Pepe, Antonio, Surface deformation of active volcanic areas retrieved with the SBAS-DInSAR technique: An overview, Annals of Geophysics, 51, 1, pp. 247-263, (2008); 
Benoit, Lionel, Multi-method monitoring of Glacier d'Argentière dynamics, Annals of Glaciology, 56, 70, pp. 118-128, (2015); 
Vaníček, Petr, Geodetic leveling and its applications, Reviews of Geophysics, 18, 2, pp. 505-524, (1980); 
Bürgmann, Roland, Resolving vertical tectonics in the San Francisco Bay Area from permanent scatterer InSAR and GPS analysis, Geology, 34, 3, pp. 221-224, (2006); 
Parizzi, Alessandro O., InSAR Performance for Large-Scale Deformation Measurement, IEEE Transactions on Geoscience and Remote Sensing, 59, 10, pp. 8510-8520, (2021); 
Ao, Zurui, A national-scale assessment of land subsidence in China's major cities, Science, 384, 6693, pp. 301-306, (2024)
PUBLISHER: Multidisciplinary Digital Publishing Institute (MDPI)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Chen, Y., Song, C., Li, Z., Yu, C., Liu, Z., Zhang, X., Chen, B., Hu, X.
AUTHOR FULL NAMES: Chen, Yi (57258467200); Song, Chuang (57196708253); Li, Zhenhong (58752845900); Yu, Chen (56181755800); Liu, Zhenjiang (57455019000); Zhang, Xuesong (57455018900); Chen, Bo (57454967900); Hu, Xiaoning (59220338900)
57258467200; 57196708253; 58752845900; 56181755800; 57455019000; 57455018900; 57454967900; 59220338900
Characterizing the evolution of the Daguangbao landslide nearly 15 years after the 2008 Wenchuan earthquake by InSAR observations
(2024) Engineering Geology, 342, art. no. 107748, Cited 8 times.
DOI: 10.1016/j.enggeo.2024.107748
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85205567255&doi=10.1016%2Fj.enggeo.2024.107748&partnerID=40&md5=e55ed9cf81aedb512e3e8f949713d521

AFFILIATIONS: College of Geological Engineering and Geomatics, Chang'an University, Xi'an, Shaanxi, China; Chang'an University, Xi'an, Shaanxi, China; Key Laboratory of Loess, Xi'an, China; Ministry of Education of the People's Republic of China, Beijing, Beijing, China
ABSTRACT: The Daguangbao landslide (DGBL), the largest landslide triggered by the 2008 Ms 8.0 Wenchuan earthquake, has received much attention, but its long-term post-earthquake evolution and driving force of activity are still poorly understood. As the evolutionary behavior of the DGBL is complicated by the influence of mainshock, aftershocks and rainfall, it is of great significance to study the dynamics of the landslide. In this study, a systematic and comprehensive framework for assessing the long-term stability and risk of co-seismic landslides was proposed. Based on ALOS-1 and Sentinel-1 data, time-series InSAR technology was used to reveal the nearly 15-year post-seismic evolution characteristics of the DGBL at different stages, followed by the prediction of the stabilization time, the estimation of the landslide thickness and risk assessment. The first stage was identified as three years after the earthquake (2008–2011). During this stage, ALOS-1 results show that the deformation of DGBL was intense (300 mm/year) with uneven spatial distribution, and an aftershock (Ms 5.3), along with increased rainfall, triggered its acceleration in 2009. The second stage was the period from 2014 to 2022. For this stage, we used the mass conservation approach to invert the thickness of the DGBL, revealing that a new sliding surface and thickness center had formed following the co-seismic failure in 2008. Sentinel-1 time series results indicated that the DGBL remains active even 15 years after the Wenchuan earthquake, but the deformation of DGBL has significantly slowed down (50 mm/year). The stabilization time for different segments of DGBL was predicted to range from 2027 to 2040 according to an exponential model. Beyond the overall trend of recovery, seasonal movements (including localized acceleration in 2021) closely related to rainfall remained evident, but the impact of aftershocks on the DGBL was severely weakened over time. UAV and field survey results suggested that the risk of localized debris flows at DGBL still exists. Our study improves our understanding of the long-term evolutionary pattern of DGBL and provides an important reference for post-earthquake landslide risk assessment and disaster prevention. © 2024
AUTHOR KEYWORDS: Daguangbao landslide; InSAR; Landslide thickness; Post-seismic kinematics; Risk assessment; Stabilization time
INDEX KEYWORDS: Earthquakes; Jurassic; Landslides; Rain; Risk perception; Time series; Daguangbao landslides; InSAR; Landslide thickness; Localised; Post-seismic kinematic; Risks assessments; Sentinel-1; Stabilization time; Times series; Wenchuan Earthquake; Risk assessment; aftershock; kinematics; landslide; rainfall; risk assessment; Sichuan earthquake 2008; stabilization; synthetic aperture radar; China
REFERENCES: Berardino, Paolo, A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms, IEEE Transactions on Geoscience and Remote Sensing, 40, 11, pp. 2375-2383, (2002); 
Bontemps, Noélie, Rain and small earthquakes maintain a slow-moving landslide in a persistent critical state, Nature Communications, 11, 1, (2020); 
Booth, Adam M., Landslide velocity, thickness, and rheology from remote sensing: La Clapière landslide, France, Geophysical Research Letters, 40, 16, pp. 4299-4304, (2013); 
Cai, Jiehua, Detection and characterization of slow-moving landslides in the 2017 Jiuzhaigou earthquake area by combining satellite SAR observations and airborne Lidar DSM, Engineering Geology, 305, (2022); 
Chaussard, Estelle, Predictability of hydraulic head changes and characterization of aquifer-system and fault properties from InSAR-derived ground deformation, Journal of Geophysical Research: Solid Earth, 119, 8, pp. 6572-6590, (2014); 
Chen, Qiang, Quantification of mass wasting volume associated with the giant landside Daguangbao induced by the 2008 Wenchuan earthquake from persistent scatterer InSAR, Remote Sensing of Environment, 152, pp. 125-135, (2014); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Yi, Prediction of InSAR deformation time-series using a long short-term memory neural network, International Journal of Remote Sensing, 42, 18, pp. 6921-6944, (2021); 
Chen, Yi, Surface deformation prediction based on TS-InSAR technology and long short-term memory networks, National Remote Sensing Bulletin, 26, 7, pp. 1326-1341, (2022); 
Chen, Bo, Automatic detection of active geohazards with millimeter-to-meter-scale deformation and quantitative analysis of factors influencing spatial distribution: A case study in the Hexi corridor, China, International Journal of Applied Earth Observation and Geoinformation, 131, (2024)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Y., Li, Z., Wen, J.
AUTHOR FULL NAMES: Yang, Yanlin (57222391660); Li, Zhuyue (57192308365); Wen, Jin (12766417000)
57222391660; 57192308365; 12766417000
Long term impact of Wenchuan earthquake on population mental and behavioral disorders in heavily-stricken areas: An ecological study based on big data
(2024) Journal of Affective Disorders, 361, pp. 589 - 595, Cited 1 times.
DOI: 10.1016/j.jad.2024.06.070
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85196973928&doi=10.1016%2Fj.jad.2024.06.070&partnerID=40&md5=babb4e5b3b41e30ca259db15ba903b56

AFFILIATIONS: Institute of Hospital Management, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan, China; Medical Equipment Innovation Research Center, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan, China
ABSTRACT: Background: This study aimed to explore and evaluate the development trends and differential changes in the prevalence of mental and behavioral disorders among the earthquake survivors in exposure groups (highly hard-hit areas) and control groups (general disaster areas) from 2015 to 2019, as well as to investigate the potential influencing factors. Methods: Data was obtained from the Sichuan Health Information System and the Sichuan Health Yearbook, the prevalence of the exposure group and the control group were calculated, the difference between the two groups was evaluated using the prevalence rate ratio, and a fixed effect model was developed to investigate the potential influencing factors of the prevalence. Results: The prevalence by gender and age in the exposure group was always greater than those in the control group (RR>1), although the disparity between the two proceeded to diminish with time. The urbanization rate (β = 0.0448, P < 0.05) and disaster area levels (β = 0.0104, P < 0.05) were risk factors for the prevalence of mental and behavioral disorders. Limitations: The study only collected data at the group level following the Wenchuan earthquake. Consequently, the findings are only applicable at the group level. Furthermore, diagnostic criteria for various types of mental and behavioral disorders diseases were not provided. Conclusions: The earthquake has a significant long-term impact on mental health. It is necessary to continuously monitor the mental health of Wenchuan earthquake survivors and take appropriate post-disaster intervention measures. © 2024 Elsevier B.V.
AUTHOR KEYWORDS: Ecological study; Mental and behavioral disorders; Prevalence rate ratio; Risk factors; Wenchuan earthquake
INDEX KEYWORDS: adult; Article; behavior disorder; big data; collapse; delusional disorder; disaster; earthquake; ecology; electronic medical record; female; human; major clinical study; male; medical staff; mental disease; middle aged; mood disorder; neurosis; prevalence; retrospective study; schizophrenia; schizotypal personality disorder; somatoform disorder; survivor; urbanization; adolescent; aged; child; China; epidemiology; psychology; risk factor; young adult; Adolescent; Adult; Aged; Big Data; Child; Disasters; Earthquakes; Female; Humans; Male; Mental Disorders; Middle Aged; Prevalence; Risk Factors; Survivors; Urbanization; Young Adult
REFERENCES: Amiri, Hadis, Suicide attempts in residents of Bam: 17 years after the Bam earthquake in Iran, Minerva Psychiatry, 63, 1, pp. 61-67, (2022); 
Anderson, Lewis Robert, Adolescent mental health and behavioural problems, and intergenerational social mobility: A decomposition of health selection effects, Social Science and Medicine, 197, pp. 153-160, (2018); 
Adhikari Baral, Ishwari, Post traumatic stress disorder and coping strategies among adult survivors of earthquake, Nepal, BMC Psychiatry, 19, 1, (2019); 
Bradshaw, Sarah, Double Disaster: Disaster through a Gender Lens, pp. 233-251, (2015); 
Carmassi, Claudia, Is Sexual Dysfunction in Young Adult Survivors to the L‘Aquila Earthquake Related to Post-traumatic Stress Disorder? A Gender Perspective, Journal of Sexual Medicine, 17, 9, pp. 1770-1778, (2020); 
Int J Radiat Oncol Biol Phys, (2017); 
undefined, (2008); 
Xiao-Yan, Chen, Longitudinal associations between adolescents’ trajectory membership of depressive symptoms and suicidality in young adulthood: a 10-year cohort of Chinese Wenchuan earthquake survivors, Epidemiology and Psychiatric Sciences, 29, (2020); 
Chen, Xiaoyan, Change patterns of sleep problems predict mental health problems among adolescents: a 10-year cohort study of Chinese Wenchuan earthquake, Journal of Affective Disorders, 287, pp. 138-144, (2021); 
Cherry, Katie E., Longitudinal assessment of cognitive and psychosocial functioning after Hurricanes Katrina and Rita: Exploring disaster impact on middle-aged, older, and oldest-old adults, Journal of Applied Biobehavioral Research, 16, 3-4, pp. 187-211, (2011)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, W., Zhang, G., Ding, Y., Liu, N., Huo, X.
AUTHOR FULL NAMES: Jin, Wen (57208353895); Zhang, Guotao (57188966463); Ding, Yi (55377268400); Liu, Nanjiang (59564316600); Huo, Xiaowei (59564416300)
57208353895; 57188966463; 55377268400; 59564316600; 59564416300
Identifying the Characteristics and Implications of Post-Earthquake Debris Flow Events Based on Multi-Source Remote Sensing Images
(2024) Remote Sensing, 16 (17), art. no. 3336, Cited 1 times.
DOI: 10.3390/rs16173336
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85218272509&doi=10.3390%2Frs16173336&partnerID=40&md5=1583ba0d1895902b0249820379d77e7c

AFFILIATIONS: National Disaster Reduction Center of China, Ministry of Emergency Management, Beijing, Beijing, China; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Ltd., Xi'an, Shaanxi, China
ABSTRACT: Strong earthquakes often bring amounts of loose material, disrupting the balance of material transportation within a watershed and severely impacting the restoration of the ecological environment and human safety downstream. Therefore, it is crucial to identify the frequency and scale of these debris flow events, as well as to explore their long-term development and impact on internal and external channels. Using multi-source remote sensing images from four perspectives, hillslope, channel, accumulation fan, and their relationship with the mainstream, we reconstructed a debris flow event dataset from 2008 to 2020, explored a method for identifying these events, and analyzed their impacts on channels and accumulation fans in Mozi Gully affected by the Wenchuan earthquake. Loose matter was predominantly found in areas proximate to the channel and at lower elevations during debris flow events. Alterations in channel width, accumulation fans downstream, and their potential to obstruct rivers proved to be vital for identifying the large scale of debris flow event. Finally, we encapsulated the evolution patterns and constraints of post-earthquake debris flows. Determination in frequency and scale could offer valuable supplementary data for scenario hypothesis parameters in post-earthquake disaster engineering prevention and control. © 2024 by the authors.
AUTHOR KEYWORDS: accumulation fan; channel evolution; loose materials; multi-source remote sensing images; post-earthquake debris flow
INDEX KEYWORDS: Disasters; Earthquake effects; Accumulation fan; Channel evolution; Debris flows; Down-stream; Flow events; Loose materials; Multi-source remote sensing image; Multi-Sources; Post-earthquake debris flow; Remote sensing images; Disaster prevention
REFERENCES: Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Koi, Takashi, Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan, Geomorphology, 101, 4, pp. 692-702, (2008); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009); 
Francis, Oliver R., The Fate of Sediment After a Large Earthquake, Journal of Geophysical Research: Earth Surface, 127, 3, (2022); 
Jin, Wen, Evaluating the post-earthquake landslides sediment supply capacity for debris flows, Catena, 220, (2023); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dai, Lanxin, Coseismic Debris Remains in the Orogen Despite a Decade of Enhanced Landsliding, Geophysical Research Letters, 48, 19, (2021); 
Zhang, Fei, Monsoonal control on a delayed response of sedimentation to the 2008 Wenchuan earthquake, Science Advances, 5, 6, (2019); 
Wang, Wei, Perturbation of fluvial sediment fluxes following the 2008 Wenchuan earthquake, Earth Surface Processes and Landforms, 42, 15, pp. 2611-2622, (2017); 
Chen, Xiaoqing, Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area, Engineering Geology, 194, pp. 73-85, (2015)
PUBLISHER: Multidisciplinary Digital Publishing Institute (MDPI)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, Y., Colombelli, S., Zollo, A., Li, S.
AUTHOR FULL NAMES: Wang, Yuan (57200062375); Colombelli, Simona (55248381200); Zollo, Aldo (56230410200); Li, Shanyou (36681438000)
57200062375; 55248381200; 56230410200; 36681438000
Near-epicenter-based partial matching crossover algorithm for estimating the strong-shaking zone of large earthquakes
(2024) Bulletin of Earthquake Engineering, 22 (11), pp. 5545 - 5570, Cited 1 times.
DOI: 10.1007/s10518-024-01981-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199544112&doi=10.1007%2Fs10518-024-01981-2&partnerID=40&md5=f06a852f5ea421c7dcd0c4a1adbdf75c

AFFILIATIONS: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Department of Physics, Università degli Studi di Napoli Federico II, Naples, NA, Italy; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: The rapid and accurate prediction of earthquake Strong-Shaking Zone (SSZ) is crucial for issuing precise early warnings to regions at high risk of strong ground shaking. Generally, the SSZ is derived from the real-time spatial distribution of observed ground motions. However, during the initial stages of large earthquakes, the SSZ is often underestimated and provide alerts without enough lead-time (the time interval between the alert declaration and the S-wave arrival to the target area). In this study, we propose an innovative approach termed Near-epicenter-based Partial Matching Crossover. Leveraging the characteristic that reliable magnitude estimates for large earthquakes are available earlier than accurate predictions of the peak ground velocity (PGV) distribution, this approach utilizes near-epicenter station data to rapidly estimate the SSZ. It achieves this by matching a segment of the fault, defined by a predetermined length, with the predicted PGV map within a 120 km radius centered at the epicenter. Application of our method to strong motion data from China, Japan and Turkey demonstrates its efficacy in quickly anticipating the post-earthquake intensity distributions for large earthquakes. Specifically, it offers a lead time of 5 s or more for 51.5% (39,354 km2), 43.3% (5772 km2), 31%(47,107 km2) and 75.3% (81,966 km2) of the I<inf>MM</inf> = V region during the M 8 Wenchuan earthquake, the M 7.3 Kumamoto earthquake, the M 7.8 Syria earthquake and M 7.6 Turkey earthquake, respectively. The presented approach introduces a novel methodology to extend the lead time for earthquake early warnings. © The Author(s), under exclusive licence to Springer Nature B.V. 2024.
AUTHOR KEYWORDS: Earthquake early warning; Earthquake magnitude; Fault rupture extent; Lead time; P-wave amplitude parameters; Strong-shaking zone
INDEX KEYWORDS: Earthquake effects; Faulting; Shear waves; Amplitude parameters; Earthquake early warning; Earthquake magnitudes; Fault rupture extent; Fault ruptures; Leadtime; P waves; P-wave amplitude parameter; Rupture extent; Strong-shaking zone; Wave amplitudes; Seismic waves; algorithm; amplitude; early warning system; earthquake magnitude; P-wave; seismic hazard; spatial distribution; strong motion; China; Japan; Kumamoto; Kyushu; Sichuan; Syrian Arab Republic; Turkey; Wenchuan
REFERENCES: Bull Seismol Soc Am, (1978); 
Böse, Maren, Real-time Finite Fault Rupture Detector (FinDer) for large earthquakes, Geophysical Journal International, 191, 2, pp. 803-812, (2012); 
Chung, Angela I., Shakealert earthquake early warning system performance during the 2019 ridgecrest earthquake sequence, Bulletin of the Seismological Society of America, 110, 4, pp. 1904-1923, (2020); 
Colombelli, Simona, Fast determination of earthquake magnitude and fault extent from real-time P-wave recordings, Geophysical Journal International, 202, 2, pp. 1158-1163, (2015); 
Colombelli, Simona, Early magnitude and potential damage zone estimates for the great Mw 9 Tohoku-Oki earthquake, Geophysical Research Letters, 39, 22, (2012); 
Convertito, Vincenzo, Fault extent estimation for near-real-time ground-shaking map computation purposes, Bulletin of the Seismological Society of America, 102, 2, pp. 661-679, (2012); 
Hsu, Ting-Yu, Onsite Early Prediction of PGA Using CNN With Multi-Scale and Multi-Domain P-Waves as Input, Frontiers in Earth Science, 9, (2021); 
Huang, Yu, Secondary geological hazard analysis in Beichuan after the Wenchuan earthquake and recommendations for reconstruction, Environmental Earth Sciences, 66, 4, pp. 1001-1009, (2012); 
Bull Seism Soc Am, (1981); 
Li, Jiawei, Estimating rupture dimensions of three major earthquakes in Sichuan, China, for early warning and rapid loss estimates, Bulletin of the Seismological Society of America, 110, 2, pp. 920-936, (2020)
PUBLISHER: Springer Science and Business Media B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qiu, H.-Z., Ma, S.-Y., Chen, X.-L.
AUTHOR FULL NAMES: Qiu, Hengzhi (58672979900); Ma, Siyuan (57190214231); Chen, Xiaoli (8346444100)
58672979900; 57190214231; 8346444100
STUDY ON THE EFFECT OF EXCESS TOPOGRAPHY ON LANDSLIDES INDUCED BY LUDING Ms6.8 EARTHQUAKE IN 2022 2022 年 Ms6.8 泸定地震诱发滑坡中 过剩地形的影响
(2024) Dizhen Dizhi, 46 (4), pp. 783 - 801, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2024.04.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85205876112&doi=10.3969%2Fj.issn.0253-4967.2024.04.002&partnerID=40&md5=1de51de10c92e9434ac72f87c4dc055f

AFFILIATIONS: Key Laboratory of Seismic and Volcanic Hazards, Institute of Geology, China Earthquake Administration, Beijing, China
ABSTRACT: Strong earthquakes in mountainous regions are prone to triggering severe geological disasters, such as landslides, collapses, and debris flows. These disasters are characterized by their wide distribution, large scale, and high frequency, making them among the most destructive secondary effects of earthquakes. In recent years, the central and eastern parts of the Qinghai-Tibet Plateau have experienced frequent strong earthquakes, leading to varying degrees of earthquake-induced landslide disasters. Landscape evolution is significantly influenced by tectonic activities and river incising, which alter the materials of hillslopes and their topographic characteristics. Earthquakes can significantly affect the spatial distribution of co-seismic landslides, particularly in areas with excess topography. In tectonically active zones, rock uplift and river erosion gradually increase slope angles and decrease slope stability. Weathering, freeze-thaw cycles, and seismic vibrations can reduce rock strength, leading to slope erosion and landslides. Once these processes occur, the slope tends to reach a critical state of stability, which is characterized by the presence of excess topography. Landslides can rapidly reduce hillside elevations, limiting terrain relief and impacting landform evolution. Excess topography, defined as rock mass inclined at angles greater than a specified threshold, is closely related to unstable slope masses. The essence of a landslide is the disruption of slope equilibrium, often reflected in the presence of excess topography. However, the influence of excess topography on the distribution of co-seismic landslides is not well understood. Earthquake-induced landslides occur when slopes become unstable and slide due to seismic forces. The instability arises when ground motion alters the internal friction angle and cohesion forces along rock mass defects, making them unable to resist the gravitational forces that cause sliding. The weight of the slope material plays a crucial role in this process. As a key component of landscape evolution, landslides significantly shape geomorphic forms, as indicated by the presence of excess topography. The undulating terrain of a region is the result of long-term structural and surface erosion interactions, as well as material migration and distribution. Landslide development is closely related to the local environment, particularly geomorphic ccnditions. Seismic landslides also play a vital role in shaping and reorganizing active orogenic belts, influencing subsequent landscape evolution. On September 5, 2022, a M<inf>s</inf>6.8 earthquake struck Luding county, Sichuan province, China, with the epicenter in Hailuogou Glacier Forest Park (29. 59° N, 102. 08° E), at a focal depth of 16km and a maximum intensity of IX degrees. The earthquake, lasting approximately 20 seconds, was strongly felt across many parts of Sichuan Province and induced numerous landslides, causing significant damage. The affected area, located at the transition between the Qinghai-Tibet Plateau and the Sichuan Basin, features a typical alpine and canyon landscape with steep terrain and river incision, providing favorable conditions for landslides. The long-term and intense tectonic activity in the eastern Qinghai-Tibet Plateau has resulted in complex topography and geomorphology, providing the material basis and external conditions for earthquake and landslide disasters. With advancements in science and technology, the Digital Elevation Model (DEM) has become widely used in geoscience research. As DEM accuracy improves, its applications have evolved from qualitative descriptions of geomorphic morphology to semi-quantitative and quantitative analyses of various geomorphic parameters. Geomorphic parameters reveal the structural geomorphic information within topography, essential for understanding regional characteristics and evolution mechanisms. The Luding earthquake serves as a case study for analyzing the influence of topography on the distribution of co-seismic landslides. In this study, through post-earthquake remote sensing image analysis we identified 1485 landslides (covering approximately 14.83km2) and analyzed their spatial distribution. Field surveys revealed that most co-seismic landslides are shallow, with relatively small thicknesses, primarily located along the Dadu River. Excess topography calculations based on the ALOS 12.5m DEM and subsequent quantitative analysis of its correlation with coseismic landslides indicate a strong relationship: with a 30° threshold, excess topography peaks are found along the Dadu River and its tributaries, coinciding with the majority of landslide occurrences. A total of 91.7% of co-seismic landslides are within areas of varying excess topography heights. However, the average height of excess topography in landslide areas (~80m) significantly exceeds landslide thicknesses, suggesting that the Luding earthquake only mobilized a small fraction of the total excess topography. The remaining excess topography may represent potential unstable slopes for future landslides. Furthermore, the spatial distribution of landslides induced by previous earthquakes, such as the Wenchuan earthquake in 2008, the Lushan earthquake in 2013, and the Ludian earthquake in 2014, shows a high degree of consistency. This underscores the importance of understanding the relationship between excess terrain and landslide distribution to enhance the accuracy of earthquake-induced landslide predictions. © 2024 State Seismology Administration. All rights reserved.
AUTHOR KEYWORDS: 2022 Ms6.8 Luding earthquake; excess topography; landslide distribution; seismic landslide
INDEX KEYWORDS: Earthquake effects; Fracture energy; Geochronology; Hydrogeology; Induced Seismicity; Internal friction; Miocene; Seismic waves; Slope protection; Structural geology; Tectonics; Tropics; 2022 Ms6.8 luding earthquake; Digital elevation model; Earthquake-induced landslides; Excess topography; Landscape evolutions; Landslide distributions; Qinghai Tibet plateau; Seismic landslides; Strong earthquakes; Tectonic activity; Landslides; earthquake event; ground motion; image analysis; landslide; quantitative analysis; remote sensing; spatial distribution; topography; China
REFERENCES: Cao, Pengju, DEM in quantitative analysis of structural geomorphology: application and prospect, Journal of Geomechanics, 27, 6, pp. 949-962, (2021); 
Map of Active Tectonics in China, (2007); 
Journal of Engineering Geology, (2022); 
Mountain Research, (2016); 
Scientia Sinica Terrae, (2022); 
Li, Chuanyou, THE 2022 M6. 8 LUDING EARTHQUAKE: A COMPLICATED EVENT BY FAULTING OF THE MOXI SEGMENT OF THE XIANSHUIHE FAULT ZONE, Dizhen Dizhi, 44, 6, pp. 1648-1666, (2022); 
Tie, Yongbo, Characteristics of geological hazards and it’s mitigations of the Ms6.8 earthquake in Luding County, Sichuan Province, Hydrogeology and Engineering Geology, 49, 6, pp. 1-12, (2022); 
Journal of Railway Science and Engineering, (2015); 
Bulletin of Soil and Water Conservation, (2011); 
Journal of Engineering Geology, (2013)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Y., Chen, M., Cai, Y., Tang, C., Huang, W., Xia, C.
AUTHOR FULL NAMES: Yang, Yu (59892315500); Chen, Ming (57199453005); Cai, Yinghua (57216790501); Tang, Chenxiao (55486336700); Huang, Wenli (58124440900); Xia, Chenhao (59619298000)
59892315500; 57199453005; 57216790501; 55486336700; 58124440900; 59619298000
Material Activity in Debris Flow Watersheds Pre- and Post-Strong Earthquake: A Case Study from the Wenchuan Earthquake Epicenter
(2024) Water (Switzerland), 16 (16), art. no. 2284, Cited 1 times.
DOI: 10.3390/w16162284
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202355134&doi=10.3390%2Fw16162284&partnerID=40&md5=530186fe749f13f14cedc665f015f3af

AFFILIATIONS: School of Emergency Management, Xihua University, Chengdu, Sichuan, China; Chengdu University of Technology, Chengdu, China; Ltd., Chengdu, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Ltd., Chengdu, Sichuan, China
ABSTRACT: The 2008 Wenchuan earthquake released vast quantities of loose material, significantly influencing post-earthquake material dynamics, particularly through recurrent debris flow disasters that posed long-term threats to the earthquake-affected area. To explore the transport and involvement of loose materials in debris flow events within earthquake-affected basins, this study focuses on a representative area near the Wenchuan epicenter, creating a multi-temporal database of active landslides and channel materials pre- and post-earthquake, quantitatively assessing material transport and source replenishment in debris flow basins, and categorizing debris flows based on channel material activity, post-earthquake historical activity, and sustainability of activity. This study revealed that pre-earthquake material activity was concentrated in the watershed’s upper regions, while post-earthquake materials were progressively transported from the central to the lower regions, with many small co-seismic landslides ceasing activity. The supply area ratio from active landslides capable of recharging debris flows, i.e., those connected to channels, consistently remained at approximately 72%, with the peak area of channel material activity comprising approximately 2.5% of the total watershed area. Channel material activity areas serve as valuable indicators for hazard assessment in regions lacking historical debris flow data, with the watershed area predominantly determining the sustainability of post-earthquake debris flow activity. © 2024 by the authors.
AUTHOR KEYWORDS: channel materiel; debris flow; landslide; remote sensing interpretation; Wenchuan earthquake
INDEX KEYWORDS: Earthquake effects; Landslides; Active landslides; Case-studies; Channel materials; Channel materiel; Debris flows; Loose materials; Remote sensing interpretation; Strong earthquakes; Watershed areas; Wenchuan Earthquake; Watersheds; debris flow; earthquake epicenter; earthquake event; hazard assessment; landslide; remote sensing; sustainability; watershed; China; Sichuan; Wenchuan
REFERENCES: Malamud, Bruce D., Landslides, earthquakes, and erosion, Earth and Planetary Science Letters, 229, 1-2, pp. 45-59, (2004); 
Yanites, Brian J., How rivers react to large earthquakes: Evidence from central Taiwan, Geology, 38, 7, pp. 639-642, (2010); 
Yang, Yu, Characteristics of Debris Flow Activities at Different Scales after the Disturbance of Strong Earthquakes—A Case Study of the Wenchuan Earthquake-Affected Area, Water (Switzerland), 15, 4, (2023); 
Yang, Yu, Spatial and temporal evolution of long-term debris flow activity and the dynamic influence of condition factors in the Wenchuan earthquake-affected area, Sichuan, China, Geomorphology, 435, (2023); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Landform Studies from Australia and New Guinea, (1967); 
Hovius, Niels, Prolonged seismically induced erosion and the mass balance of a large earthquake, Earth and Planetary Science Letters, 304, 3-4, pp. 347-355, (2011); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Pearce, Andrew J., Medium‐term effects of two landsliding episodes on channel storage of sediment, Earth Surface Processes and Landforms, 8, 1, pp. 29-39, (1983)
PUBLISHER: Multidisciplinary Digital Publishing Institute (MDPI)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Chen, H., Xiong, J., Zhao, W., Chen, J., Zhang, X., Ruan, H., Fang, C., Gong, L.
AUTHOR FULL NAMES: Chen, Huayong (24385415200); Xiong, Jiang (57217517892); Zhao, Wanyu (23973928300); Chen, Jiangang (56013367200); Zhang, Xianzheng (57219298270); Ruan, Hechun (57222736009); Fang, Congxi (57201332511); Gong, Lingfeng (57215612725)
24385415200; 57217517892; 23973928300; 56013367200; 57219298270; 57222736009; 57201332511; 57215612725
Catastrophic debris flow triggered by a June 26, 2023 rainstorm suggests the debris flow is still active 15 years after the Wenchuan seismic
(2024) Landslides, 21 (8), pp. 1883 - 1897, Cited 11 times.
DOI: 10.1007/s10346-024-02279-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195484054&doi=10.1007%2Fs10346-024-02279-9&partnerID=40&md5=2bc989960a27555dcce91b68abe512ae

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; China Geological Survey, Beijing, Beijing, China
ABSTRACT: The Wenchuan earthquake strongly disturbed the earth surface and induced sufficient loose debris in the mountain basin, which supplies sufficient solid materials for debris flow initiation. Recently, a catastrophic debris flow was induced by strong rainfall on June 26, 2023 in the Banzi basin. Inconsistent with the first few years of the Wenchuan earthquake, the hillslope landslide sediment supply for debris flow occurrence is limited after 15 years of the Wenchuan earthquake, and the materials supplied for debris flow in the later period are mainly obtained from alluvium deposited along the channel. Simultaneously, this debris flow was triggered by flash flood through strongly erosion channel materials. However, although 15 years have passed since the Wenchuan earthquake, the triggering rainfall conditions have still not returned to pre-earthquake level. This debris flow first initiated in the upper branches of the basin and then gradually transported downstream at an average discharge of 806.99 m3/s, and approximately 82.80 × 104 m3 solid materials were transported out the Banzi basin to form a debris flow fan with length of 120 m and width of 260 m in the Minjiang River, which poses a serious threat to the resettled population and destroy the reconstruction infrastructures. Importantly, there are still sufficient solid materials deposited in the basin, this could result in debris flow activity continuing for an unpredictable time. Therefore, implementation early warning, prevention, and mitigation measures in this basin are still important for debris flow disaster management in the later period of Wenchuan earthquake. © Springer-Verlag GmbH Germany, part of Springer Nature 2024.
AUTHOR KEYWORDS: Banzi gully; Debris flow; GIS; Landslide; Wenchuan earthquake
INDEX KEYWORDS: Debris; Disaster prevention; Disasters; Earthquakes; Landforms; Rain; Storms; Banzi gully; Debris flow occurrences; Debris flows; Earth's surface; Flash-floods; Hillslope landslides; Mountain basins; Sediment supply; Solid material; Wenchuan Earthquake; Landslides; catastrophic event; debris flow; disaster management; earthquake event; flash flood; GIS; hillslope; landslide; reconstruction; China; Min River [Sichuan]; Sichuan; Wenchuan
REFERENCES: Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Chen, Ming, Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake, Catena, 236, (2024); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Fan, Chiacheng, Role of roots in the shear strength of root-reinforced soils with high moisture content, Ecological Engineering, 33, 2, pp. 157-166, (2008); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Ge, Yonggang, Catastrophic debris flows on July 10th 2013 along the Min River in areas seriously-hit by the Wenchuan earthquake, Journal of Mountain Science, 12, 1, pp. 186-206, (2015); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jiang, T., Cui, S., Xu, X., Zhang, X., Xiang, G., Ai, Y.
AUTHOR FULL NAMES: Jiang, Tao (57856439900); Cui, Shenghua (56660242900); Xu, Xiangning (57226874751); Zhang, Xiong (59280361300); Xiang, Guoping (57188724345); Ai, Ying (58656603700)
57856439900; 56660242900; 57226874751; 59280361300; 57188724345; 58656603700
Distribution and evolution of debris flow in a typic meizoseismal area based on remote sensing: A case study of the Sichuan Duwen expressway 基于遥感解译的典型强震区泥石流物源发育及演化—以四川都汶高速沿线为例
(2024) Geological Bulletin of China, 43 (7), pp. 1243 - 1254, Cited 3 times.
DOI: 10.12097/gbc.2023.06.001
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201622098&doi=10.12097%2Fgbc.2023.06.001&partnerID=40&md5=987256dc94815db097e620c06866ff19

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; The 2nd Geological Brigade of Sichunan, Chengdu, China; Shu Tong Geotechnical Engineering Company of Sichuan Province, Chengdu, China
ABSTRACT: Duwen highway in Sichuan province is located in the strong earthquake zone of the 2008 Wenchuan earthquake, where post-earthquake debris flow disasters are exceptionally active. The debris flow disasters causes serious damage to human property and poses a major threat to human security. In order to find out the spatial distribution pattern of the material sources on the mountain slopes and explore the causes of the mudslide material sources in the earthquake area, pre-earthquake DEM, post-earthquake Landsat TM multiband fusion data, and two-phase full-color band remote sensing data of typical debris flow gullies in the area were selected to analyze the characteristics and evolution of debris flow source development. The results show that the development of debris flow sources is significantly controlled by the combined effects of terrain slope direction, slope gradient, elevation, and water system in the strong earthquake zone of the Wenchuan earthquake. There is a "back slope amplification effect" and "reverse (displacement) direction amplification effect" on the slope direction, and the elevation and slope gradient are related to the dynamic process of mountain slope development. The release of seismic energy is the basis for the development of debris flow sources. An index relationship model between the density of debris flow source development in the strong earthquake zone and seismic intensity was established, and it was believed that the presence of faults in the study area may promote further development of debris flow sources. The evolution of debris sources is characterized by area reduction and disappearance, the disintegration of large sources into multiple small sources, the convergence of small sources leading to an increase in scale, source migration, and the emergence of new sources. © 2024 China Geological Survey. All rights reserved.
AUTHOR KEYWORDS: debris flow; evolution; meizoseismal area; remote sensing; Wenchuan earthquake
INDEX KEYWORDS: debris flow; earthquake intensity; Landsat thematic mapper; mud; remote sensing; seismic zone; Sichuan earthquake 2008; spatial distribution; China; Sichuan
REFERENCES: Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Delmonaco, Giuseppe, Large scale debris-flow hazard assessment: A geotechnical approach and GIS modelling, Natural Hazards and Earth System Sciences, 3, 5, pp. 443-455, (2003); 
Di, Baofeng, GIS-based risk analysis of debris flow: an application in Sichuan, southwest China, International Journal of Sediment Research, 23, 2, pp. 138-148, (2008); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Liu, Chiannan, Impacts of september 21, 1999 Chi-Chi earthquake on the characteristics of gully-type debris flows in central Taiwan, Natural Hazards, 47, 3, pp. 349-368, (2008); 
Spudich, Paul K.P., Directional topographic site response at Tarzana observed in aftershocks of the 1994 Northridge, California, earthquake: Implications for mainshock motions, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S193-S208, (1996); 
Tang, Chuan, Catastrophic debris flows on 13 August 2010 in the Qingping area, southwestern China: The combined effects of a strong earthquake and subsequent rainstorms, Geomorphology, 139-140, pp. 559-576, (2012); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Journal of Mountain Science, (2010); 
Wooten, Richard M., Geologic, geomorphic, and meteorological aspects of debris flows triggered by Hurricanes Frances and Ivan during September 2004 in the Southern Appalachian Mountains of Macon County, North Carolina (southeastern USA), Landslides, 5, 1, pp. 31-44, (2008)
PUBLISHER: China Geological Survey
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tan, M., Hu, Q., Wu, Y., Lin, J., Fang, X.
AUTHOR FULL NAMES: Tan, Minjia (57202389821); Hu, Qizhou (23110946600); Wu, Yikai (57221098839); Lin, Juanjuan (57218894328); Fang, Xin (57785464100)
57202389821; 23110946600; 57221098839; 57218894328; 57785464100
Decision-making method for high-speed rail early warning system in complex earthquake situations
(2024) Transportation Safety and Environment, 6 (3), art. no. tdad034, Cited 4 times.
DOI: 10.1093/tse/tdad034
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195482137&doi=10.1093%2Ftse%2Ftdad034&partnerID=40&md5=667ede88195556ef340756809c58daa0

AFFILIATIONS: School of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
ABSTRACT: To address the shortcomings in decision-making methods for ground motion threshold warning models in high-speed rail earthquake early warning systems (HSREEWs), we propose a dual judgement method and corresponding early warning process for earthquake early warning decisions based on joint peak ground acceleration (PGA) and complex earthquake environmental risk evaluation (ERE) values. First, we analyse the characteristics of four complex earthquake environments based on the characteristics of high-speed rail (HSR) operating environments. Second, we establish an earthquake environmental risk evaluation index system and propose an adversarial interpretive structure modelling method-based complex earthquake situation evaluation model (AISM-based ESEM). The AISM method firstly evaluates the proximity by the TOPSIS (technique for order preference by similarity to an ideal solution) method, then effectively rank targets with fuzzy attributes through opposite hierarchical extraction rules without sacrificing system functionality. Since PGA can reflect the current size of earthquake energy, combining PGA thresholds with ESEM-derived values of ERE can effectively determine the risk status of each train and make decisions on the most appropriate alarm form and control measures for that status. Finally, case analysis results under the background of Wenchuan Earthquake show that the new early warning decision-making method accurately assesses environmental risks in affected areas and provides corresponding warning levels as a supplement to existing HSREEWs warning models. © 2023 The Author(s).
AUTHOR KEYWORDS: decision-making; earthquake early warning; earthquake risk; earthquake situation; high-speed rail (HSR)
INDEX KEYWORDS: Acceleration; Earthquake effects; Railroad transportation; Risk assessment; Decision-making method; Decisions makings; Earthquake early warning; Earthquake risk; Earthquake situation; Environmental risks; High speed rail; High-speed rail; Peak ground acceleration; Risk evaluation; Decision making
REFERENCES: Hu, Qizhou, A data perception model for the safe operation of high-speed rail in rainstorms, Transportation Research Part D: Transport and Environment, 83, (2020); 
Chen, Zhigao, A combined method for high-speed rail seismic monitoring and early warning, Geodesy and Geodynamics, 8, 5, pp. 356-360, (2017); 
Peng, Chaoyong, Development of an integrated onsite earthquake early warning system and test deployment in Zhaotong, China, Computers and Geosciences, 56, pp. 170-177, (2013); 
Railw Transp Econ, (2011); 
Journal of Natural Disasters, (2007); 
Earthquake Research in China, (2020); 
Hu, Qizhou, Natural disaster warning system for safe operation of a high-speed railway, Transportation Safety and Environment, 3, 4, (2021); 
Sun, Hanwu, Study on the earthquake urgent automatic alarm system of high-speed railway, Zhongguo Tiedao Kexue/China Railway Science, 28, 5, pp. 121-127, (2007); 
Zhang, Yong, Fast and robust inversion of earthquake source rupture process and its application to earthquake emergency response, Earthquake Science, 25, 2, pp. 121-128, (2012); 
Fu, Jihua, Performance evaluation of low-cost seismic sensors for dense earthquake early warning: 2018–2019 field testing in Southwest China, Sensors, 19, 9, (2019)
PUBLISHER: Oxford University Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Erratum regarding previously published articles (Earthquake Research Advances (2022) 2(3), (S2772467022000288), (10.1016/j.eqrea.2022.100137))
(2024) Earthquake Research Advances, 4 (3), art. no. 100293, Cited 0 times.
DOI: 10.1016/j.eqrea.2024.100293
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187559556&doi=10.1016%2Fj.eqrea.2024.100293&partnerID=40&md5=a001bd502c4a2fb28b57ae90e0f74929

ABSTRACT: The publisher would like to draw the reader's attention to the following errors. “An open-accessed inventory of landslides triggered by the M<inf>S</inf> 6.8 Luding earthquake, China on September 5, 2022”(Earthquake Research Advances, 2023, 3). https://doi.org/10.1016/j.eqrea.2022.100181 Received in revised form 14 October 2022. The appropriate Declaration/Conflict of Interest statements, provided by the Authors, are included below. 1. “Numerical simulation of deep-hole resistivity anomaly caused by drilling construction in Xinfengjiang geoelectric station” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100139. Declaration of interest: The Authors have no interests to declare. 2. “Is clustered seismicity an indicator of regional stress? Insights from earthquake sequences in Yongning-Luguhu faulted basin, Southwest China” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100138. Declaration of interest: The Authors have no interests to declare. 3. “The response law of far-field seismic ground motion of the Wenchuan earthquake and its damaging mechanism in the Loess Plateau” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100114. Declaration of interest: The Authors have no interests to declare. 4. “The mechanism of slope instability due to rainfall-induced structural decay of earthquake-damaged loess” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100137. Declaration of interest: The Authors have no interests to declare. 5. “Advances in the deep tectonics and seismic anisotropy of the Lijiang-Xiaojinhe fault zone in the Sichuan-Yunnan Block, Southwestern China”(Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100116. Declaration of interest: The Authors have no interests to declare. 6. “Characteristics of ground cracks caused by the MS 6.4 Yangbi earthquake and the corresponding tectonic significance” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100142. Declaration of interest: The Authors have no interests to declare. 7. “Performance of the Yangbi MS 6.4 earthquake disaster in different geomorphic units in Yunnan” (Earthquake Research Advances, 2022, 2). https://doi.org/10.1016/j.eqrea.2022.100135. Declaration of interest: The Authors have no interests to declare. 8. “The advance in obtaining fault slip rate of strike slip fault-A review” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100032. Declaration of interest: The Authors have no interests to declare. 9. “Fault detection by reflected surface waves based on ambient noise interferometry” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100035. Declaration of interest: The Authors have no interests to declare. 10. “Focal mechanism and seismogenic structure of the Shiqu MS4.4 earthquake” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100065. Declaration of interest: The Authors have no interests to declare. 11. “A classification method of building structures based on multi-feature fusion of UAV remote sensing images” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100069. Declaration of interest: The Authors have no interests to declare. 12. “Experimental study on the influence of seismic subsidence of loess under bidirectional loading modes” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100064. Declaration of interest: The Authors have no interests to declare. 13. “MatDEM-fast matrix computing of the discrete element method” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100010. Declaration of interest: The Authors have no interests to declare. 14. “A multi-channel approach for automatic microseismic event association using RANSAC-based Arrival Time Event Clustering (RATEC)” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100008. Declaration of interest: The Authors have no interests to declare. 15. “Application of HPC and big data in post-pandemic times” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100006. Declaration of interest: The Authors have no interests to declare. 16. “Analysis of GAMIT/GLOBK in high-precision GNSS data processing for crustal deformation” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100028. Declaration of interest: The Authors have no interests to declare. 17. “General seismic wave and phase detection software driven by deep learning” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100029. Declaration of interest: The Authors have no interests to declare. 18. “A test method for analyzing the deformation of landslide model” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100031. Declaration of interest: The Authors have no interests to declare. 19 “The safety distance of a tunnel under-traversing a slope body with a landslide-prone zone” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100059. Declaration of interest: The Authors have no interests to declare. 20. “TransQuake: A transformer-based deep learning approach for seismic P-wave detection” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100004. Declaration of interest: The Authors have no interests to declare. 21. “The stress change of the major activity faults in the Weihe Graben after the Wenchuan earthquake” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100014. Declaration of interest: The Authors have no interests to declare. 22. “Comparative study on the deviation characteristics of post-earthquake intensity evaluation based on two intensity attenuation relationship models”(Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100025. Declaration of interest: The Authors have no interests to declare. 23. “Coseismic deformation of the 2020 Yutian MW 6.4 earthquake from Sentinel-1A and the slip inversion” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100027. Declaration of interest: The Authors have no interests to declare. 24. “Simulation of the water level influence on the difference within the water-tube tiltmeter in Shuangyang Lake” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100013. Declaration of interest: The Authors have no interests to declare. 25. “Experimental of the influence of mineral composition and normal stress on the frictional slip of shale” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100030. Declaration of interest: The Authors have no interests to declare. 26. “Seismic response reduction analysis of large chassis base-isolated structure under long-period ground motions” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100026. Declaration of interest: The Authors have no interests to declare. 27″Research progress on layered seismic anisotropy - A review” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100005. Declaration of interest: The Authors have no interests to declare. 28. “Illuminating high-resolution crustal fault zones using multi-scale dense arrays and airgun source” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100001. Declaration of interest: The Authors have no interests to declare. 29. “Fluid-driven seismicity in relatively stable continental regions: Insights from the February 3rd, 2020 MS5.1 Qingbaijiang isolated earthquake” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100007. Declaration of interest: The Authors have no interests to declare. 30. “Seismic imaging of the double seismic zone in the subducting slab in Northern Chile” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100003. Declaration of interest: The Authors have no interests to declare. 31. “Viscoelastic relaxation of the upper mantle and afterslip following the 2014 MW8.1 Iquique earthquake” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100002. Declaration of interest: The Authors have no interests to declare. 32. “Application of Snell's law in reflection raytracing using the multistage fast marching method” (Earthquake Research Advances, 2021, 1). https://doi.org/10.1016/j.eqrea.2021.100009. Declaration of interest: The Authors have no interests to declare. © 2024 China Earthquake Networks Center.
PUBLISHER: KeAi Communications Co.
DOCUMENT TYPE: Erratum
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Li, Q., Zhang, J., Jiang, H.
AUTHOR FULL NAMES: Li, Qiang (56041974800); Zhang, Jingfa (14032411600); Jiang, Hongbo (58169571000)
56041974800; 14032411600; 58169571000
Incorporating multi-source remote sensing in the detection of earthquake-damaged buildings based on logistic regression modelling
(2024) Heliyon, 10 (12), art. no. e32851, Cited 4 times.
DOI: 10.1016/j.heliyon.2024.e32851
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195866771&doi=10.1016%2Fj.heliyon.2024.e32851&partnerID=40&md5=5574e2454707be62a992d18f83f66a15

AFFILIATIONS: Ministry of Emergency Management of China, Beijing, Beijing, China
ABSTRACT: After an earthquake, efficiently and accurately acquiring information about damaged buildings can help reduce casualties. Earth observation data have been widely used to map affected areas after earthquakes. However, fine post-earthquake assessment results are needed to manage recovery and reconstruction and to estimate economic losses. In this paper, for quantification and precision purposes, a method of earthquake-induced building damage information extraction incorporating multi-source remote sensing data is proposed. The method consists of three steps： (1) Analysis of multisource features that describe texture, colour, and geometry, (2) rough set theory is carried out to further determine the feature parameters, (3) Logistic regression model (LRM) was built to describe the relationship between the occurrence and absence of destroyed buildings within an individual object. Old Beichuan County (centered at approximately 31.833︒N, 104.459° E), China, the area most devastated by the Wenchuan earthquake on May 12, 2008, is used to test the proposed hypothesis. Multi-source remote sensing imagery include optical data, synthetic aperture radar (SAR) data, and digital surface model (DSM) data generated by interpolating light detection and ranging (LiDAR) point cloud data. Through comparison with the ground survey, the experimental results show that the detection accuracy of the proposed method is 94.2 %; the area under the receiver operating characteristic (ROC) curve is 0.827. The efficiency of the proposed method is demonstrated using 6 modes of data combination acquired from the same area in old Beichuan County. The approach is one of the first attempts to extract damaged buildings through the fusion of three types of data with different features. The approach addresses multivariate regression methodologies and compares the potential of features for application in the damage detection field. © 2024
REFERENCES: Özerdem, Alpaslan, L'Aquila's reconstruction challenges: Has Italy learned from its previous earthquake disasters?, Disasters, 37, 1, pp. 119-143, (2013); 
Lu, Chihheng, Coherence difference analysis of sentinel-1 SAR interferogram to identify earthquake-induced disasters in urban areas, Remote Sensing, 10, 8, (2018); 
Dreger, Douglas S., Seismic remote sensing for the earthquake source process and near-source strong shaking: A case study of the October 16, 1999 hector mine earthquake, Geophysical Research Letters, 27, 13, pp. 1941-1944, (2000); 
Tralli, David M., Satellite remote sensing of earthquake, volcano, flood, landslide and coastal inundation hazards, ISPRS Journal of Photogrammetry and Remote Sensing, 59, 4, pp. 185-198, (2005); 
Dell’Acqua, Fabio, Remote sensing and earthquake damage assessment: Experiences, limits, and perspectives, Proceedings of the IEEE, 100, 10, pp. 2876-2890, (2012); 
Ma, Jiaorong, Studies on the criteria of post-earthquake building safety evaluation based on principle "repairable level under moderate earthquake, Advanced Materials Research, 368-373, pp. 1509-1512, (2012); 
Marshall, Justin D., Post-earthquake building safety inspection: Lessons from the canterbury, New Zealand, earthquakes, Earthquake Spectra, 29, 3, pp. 1091-1107, (2013); 
Brunner, Dominik, Earthquake damage assessment of buildings using VHR optical and SAR imagery, IEEE Transactions on Geoscience and Remote Sensing, 48, 5, pp. 2403-2420, (2010); 
Geiss, Christian, Remote sensing contributing to assess earthquake risk: From a literature review towards a roadmap, Natural Hazards, 68, 1, pp. 7-48, (2013); 
Proceedings of the International Conference on Disaster Risk Management, (2019)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Zhao, W., You, Y., Chen, X., Yang, D.
AUTHOR FULL NAMES: Zhao, Wanyu (23973928300); You, Yong (35811595800); Chen, Xiaoqing (55739112600); Yang, Dongxu (55635875700)
23973928300; 35811595800; 55739112600; 55635875700
Application situation and considerations of debris flow deposition works
(2024) Science of Soil and Water Conservation, 22 (3), pp. 12 - 19, Cited 0 times.
DOI: 10.16843/j.sswc.2022001
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105001172983&doi=10.16843%2Fj.sswc.2022001&partnerID=40&md5=9e9359a68814f6ddc724e1653e04fe03

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Institute of Exploration Technology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: [Background] The comprehensive prevention system of debris flow mainly consists of the stabilization, blockage, drainage, and deposition works. Among them, deposition work plays an important role in debris flow mitigation and thus is widely used in many engineering applications. Despite its importance, systematic research on deposition work, however, is still rare. As a result, the design of debris flow deposition projects mostly relies on the personal empirical experiences of engineers currently, regardless of the law of equilibrium deposition. [Methods] After summarizing and analyzing numerous relevant domestic and international literature, several methods regarding field investigation of the existing deposition works of debris flow, including remote sensing imagery interpretation, topographic survey, and engineering structure parameters analysis, were carried out. This is aimed at the problems concerning the diversion, equilibrium deposition, and energy dissipation measure of existing deposition works of debris flow. [Results] The debris flow storage basin became popular and has been applied in numerous engineering applications after the Wenchuan earthquake and Jiuzhaigou earthquake. The suitable conditions for debris flow storage basins include: 1) The spatial condition for the debris flow drainage channel is lacking due to the insufficient deposition space; 2) many debris flow gullies, e. g., the Jiuzhaigou gully, didn’t have the spatial condition of drainage because of the steep longitudinal gradient of gully bed; 3) many linear projects (i. e., highways and railways) pass through the middle of the debris flow fan, which makes the drainage measures of debris flow invalid. Although deposition works compensated for the measures of debris flow mitigation, some shortcomings arise and are summarized as follows: 1) The space of debris flow deposition works is not rationally utilized due to the absence of diversion and equilibrium deposition measures; 2) the design of deposition works still largely depends on personal empirical experiences; in particular, the calculation of deposition volume is obtained by estimation, which, of course, results in large errors; 3) great damage to the retaining wall occurs because there are no energy dissipation measures in the storage basin; 4) the design of traditional debris flow retaining wall does not consider the impact force of debris flow; 5) apparent contradiction between the area occupied by deposition works and the human land use arise. [Conclusions ] Given the shortcoming mentioned above, the equilibrium deposition law of deposition works of debris flow is put forward, as well as some optimization methods concerning volumetric capacity configuration, structural style, and design parameters of retaining wall. The results obtained in this study could contribute to the early design and research of the deposition works of debris flow. © 2024, Editorial Board of Science of Soil and Water Conservation. All rights reserved.
AUTHOR KEYWORDS: application situation; debris flow; equilibrium deposition; mitigation engineering; storage basin
REFERENCES: Debris Flow Research in China, (2004); 
Tang, Chuan, Triggering conditions and depositional characteristics of a disastrous debris flow event in Zhouqu city, Gansu Province, northwestern China, Natural Hazards and Earth System Sciences, 11, 11, pp. 2903-2912, (2011); 
Journal of Mountain Science, (2010); 
Mountain Research, (2019); 
Liu, Jinfeng, Characteristics and hazard prediction of large-scale debris flow of Xiaojia Gully in Yingxiu Town, Sichuan Province, China, Engineering Geology, 180, pp. 55-67, (2014); 
Ouyang, Chaojun, An example of a hazard and risk assessment for debris flows—A case study of Niwan Gully, Wudu, China, Engineering Geology, 263, (2019); 
Hu, Guisheng, An effectiveness evaluation method for debris flow control engineering for cascading hydropower stations along the Jinsha River, China, Engineering Geology, 266, (2020); 
Guide to Prevention of Debris Flow, (1991); 
Hydrogeology Engineering Geology, (2015); 
Hazard Mechanism Research of Wide Gentle and Narrow Steep Channels Debris Flow in Wenchuan Earthquake Region, (2016)
PUBLISHER: Editorial Board of Science of Soil and Water Conservation
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhan, X., Hu, X., Jing, Z., Xu, W., Xia, D., Ding, G.
AUTHOR FULL NAMES: Zhan, Xiaoyu (59004925500); Hu, Xudong (57204681802); Jing, Zexin (59004509700); Xu, Wennian (38562605700); Xia, Dong (36467427300); Ding, Gujie (59119365800)
59004925500; 57204681802; 59004509700; 38562605700; 36467427300; 59119365800
Variation in Debris-Flow-Prone Areas with Ecosystem Stability: A Case Study of the Qipan Catchment in the Wenchuan Earthquake Region
(2024) Sustainability (Switzerland), 16 (9), art. no. 3855, Cited 3 times.
DOI: 10.3390/su16093855
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192725261&doi=10.3390%2Fsu16093855&partnerID=40&md5=83f30edfb0a48e5388738afddd70d514

AFFILIATIONS: China Three Gorges University, Yichang, Hubei, China; College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, China; College of Civil Engineering and Architecture, China Three Gorges University, Yichang, Hubei, China
ABSTRACT: The spatial distribution of vegetation in a basin has a far-reaching influence on the potential for sediment separation and transport capacity. However, many landslides induced by strong earthquakes have greatly changed the existing pattern, which further increases the probability of debris flow in a basin during heavy rainfall and has a significant impact on the stability of the basin. Thus, this study selected the debris flow basin in the Qipan catchment of the Wenchuan earthquake area as the research object. Multisource and high-precision remote sensing images were used to analyze the land use changes in the basin, and the index of connectivity (IC) was introduced to analyze the evolution of sediment transport capacity. An ecosystem stability assessment method suitable for post-earthquake debris flow basins was proposed. Through quantitative assessment of the ecosystem stability of the basin after the Wenchuan earthquake in 2008 and the two debris flow events after the earthquake, the dynamic relationship between the debris-flow-prone area and the ecosystem stability of the basin was revealed. The results showed that the stability of the ecosystem in the Qipan catchment increased annually, indicating a stable and substable state. The spatial distribution characteristics were lower in the north and south and greater in the middle. By comparing the evaluation results with the actual terrain change trend, the accuracy and feasibility of the evaluation method are verified. The results of this study provide a scientific basis for the formulation of regional disaster prevention strategies and help to accelerate the improvement of regional stability in debris-flow-prone areas. © 2024 by the authors.
AUTHOR KEYWORDS: ecosystem stability; Qipan catchment; sediment connectivity; vegetation
INDEX KEYWORDS: assessment method; catchment; debris flow; disaster management; ecosystem dynamics; land use change; remote sensing; sediment transport; spatial distribution; vegetation dynamics; China; Sichuan; Wenchuan
REFERENCES: Smith, Pete, REVIEW: The role of ecosystems and their management in regulating climate, and soil, water and air quality, Journal of Applied Ecology, 50, 4, pp. 812-829, (2013); 
Zhou, Yanyan, Ecosystem health assessment in debris flow-prone areas: A case study of Bailong River Basin in China, Journal of Cleaner Production, 357, (2022); 
Yin, Jiabo, Large increase in global storm runoff extremes driven by climate and anthropogenic changes, Nature Communications, 9, 1, (2018); 
Cui, Haohao, Influencing Factors and Evaluation of Groundwater Ecological Function in Arid/Semiarid Regions of China: A Review, Sustainability (Switzerland), 16, 4, (2024); 
Zhang, Jiqin, Experimental Study on Gully Erosion Characteristics of Mountain Torrent Debris Flow in a Strong Earthquake Area, Water (Switzerland), 15, 2, (2023); 
Kang, Chao, Investigation of erosion characteristics of debris flow based on historical cases, Engineering Geology, 306, (2022); 
Pimm, Stuart L., The complexity and stability of ecosystems, Nature, 307, 5949, pp. 321-326, (1984); 
Grimm, Volker, On the application of stability concepts in ecology, Ecological Modelling, 63, 1-4, pp. 143-161, (1992); 
Kéfi, Sonia, Advancing our understanding of ecological stability, Ecology Letters, 22, 9, pp. 1349-1356, (2019); 
Donohue, Ian, On the dimensionality of ecological stability, Ecology Letters, 16, 4, pp. 421-429, (2013)
PUBLISHER: Multidisciplinary Digital Publishing Institute (MDPI)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Song, D.-M., Zhang, M.-Y., Shan, X.-J., Cui, J.-Y., Wang, B.
AUTHOR FULL NAMES: Song, Dongmei (56427407300); Zhang, Manyu (57461473000); Shan, Xianjian (7101712284); Cui, Jianyong (56814102700); Wang, Bin (57204241476)
56427407300; 57461473000; 7101712284; 56814102700; 57204241476
CONSTRUCTION METHOD OF SEISMOTHERMAL INFRARED BACKGROUND FIELD BASED ON GPR-LSTM 基于GPR-LSTM 的地震热红外背景场的构建方法
(2024) Dizhen Dizhi, 46 (2), pp. 492 - 511, Cited 1 times.
DOI: 10.3969/j.issn.0253-4967.2024.02.015
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202447470&doi=10.3969%2Fj.issn.0253-4967.2024.02.015&partnerID=40&md5=e9361b07c16008ac1b02566ddeff61c4

AFFILIATIONS: College of Oceanography and Spatial Information, China University of Petroleum (East China), Qingdao, Shandong, China; Laboratory for Marine Mineral Resources, Qingdao, China; Institute of Geology, China Earthquake Administration, Beijing, China
ABSTRACT: Seismic monitoring is a very important and challenging task. The continuous development of remote sensing technology has strengthened our ability to monitor the Earth's surface on a macro scale. Research shows that an abnormal rise in surface temperature usually occurs before an earthquake, so a variety of anomaly extraction algorithms have been applied to the study of seismic thermal anomalies. Among them, the extraction method based on background field is widely used because of its strong mechanism interpretation. However, the previous anomaly methods based on the background field mainly limit the background field to a certain fixed threshold value, and ignore the small range of normal LST fluctuations caused by external factors ( non-seismic) . Therefore, a method of constructing a seismothermal infrared background field based on GPR-LSTM is proposed in this paper. The main idea of the method is that the LST background field is obtained by adding the established annual variable reference field and the fluctuation range of normal LST. First, the LST exhibits a range of fluctuations due to non-seismic factors such as solar radiation, weather, and human activities. Therefore, it is not reasonable to take a fixed value of the LST background field but it should have a certain fluctuation range. Therefore, the dynamic fluctuation characteristics of the background field should be reflected in the construction process of the background field in this study. Secondly, the reason why this method uses the LSTM model to predict the annual variable reference field of the earthquake period based on the annual variable reference field of the non-earthquake period is that on the one hand, the LSTM model can predict the law of long time series data, so it can better learn the annual variation law of LST in the non-earthquake year. At the same time, the LST trend of increasing or decreasing year by year caused by climate change can be predicted, which is conducive to more truly describing the LST trend of the real background field in the year of the earthquake period. The method includes two parts: the establishment of the annual variable reference field, the calculation of the residual fluctuation range of the actual LST and the construction of the background field. Based on the MODIS surface temperature product, the precursory thermal anomaly information of the 2008 Wenchuan earthquake in Sichuan Province and the Yutian earthquake in Xinjiang Province was extracted and analyzed by using the proposed method. Based on the MODIS surface temperature data of the 2008 Wenchuan earthquake in Sichuan Province and the Yutian earthquake in Xinjiang Province, the proposed method is used to detect and analyze the thermal anomalies before the earthquake. The following conclusions are drawn; ( 1) The established LST background field on the Qinghai-Xizang Plateau is consistent with the actual variation law of LST and is relatively stable on the whole. In the time dimension, the background field of LST shows the annual variation of high summer and low winter. In terms of spatial dimension, the established LST background field is generally high in the south, low in the middle and low in the north, and the temperature value of the background field is the lowest at the highest altitude of the Qinghai-Xizang Plateau. (2) The thermal anomalies obtained based on the new algorithm are usually distributed along the fault zone of the Qinghai-Xizang Plateau, and the anomaly evolution law is obvious. For the Yutian earthquake in Xinjiang, the trend of thermal anomalies is consistent with that of the fault zone in most cases, and the thermal anomalies are mainly distributed in the northern margin of the fault zone. For the Wenchuan earthquake in Sichuan Province, with the onset time approaching, the thermal anomalies gradually moved southward along the Longmenshan fault zone from the north margin, filled the entire fault zone before the earthquake, and disappeared after the earthquake. This proves the validity of the proposed background field construction method. (3) Compared with non-seismic years, the spatial characteristics of thermal anomalies along faults are more obvious in seismic years, and the duration and amplitude of the anomalies are longer. This indicates that the tectonic activity in seismic years is more active than that in non-seismic years, resulting in more significant abnormal warming of surface temperature. (4) The evolution law of thermal anomalies of earthquakes with magnitude 7 or above on the Qinghai-Tibet Plateau can be summarized as incubation-disappearance-accumulation-disappearance-earthquake occurrence, and the strength of thermal anomalies appears in the way of repeated changes. This indicates that the thermal anomaly is not continuously enhanced or weakened before the earthquake but shows the characteristics of repeated fluctuations between strong and weak until the earthquake eruption thermal anomaly disappears. In conclusion, the proposed method can not only ensure that the established background field is not affected by tectonic factors but also fully consider the small range of normal fluctuation of surface temperature caused by non-tectonic factors, which makes the extraction of thermal infrared anomaly information more accurate. This provides new technical means and ideas for the extraction of earthquake anomaly information and is helpful for the further development of earthquake monitoring. © 2024 State Seismology Administration. All rights reserved.
AUTHOR KEYWORDS: Anomaly of heat; Background field; GPR; LSTM; Precursor of earthquake
INDEX KEYWORDS: Earthquake effects; Energy security; Geochronology; Hydrogeology; Seismic response; Tropics; Anomaly of heat; Background field; Fault zone; LSTM; Precursor of earthquakes; Reference field; Sichuan province; Surface temperatures; Thermal anomalies; Xinjiang; Atmospheric temperature; annual variation; climate change; earthquake precursor; extraction method; fault zone; ground penetrating radar; infrared radiation; MODIS; remote sensing; surface temperature; temperature anomaly; China
REFERENCES: Plateau Earthquake Research, (2014); 
Chen, Meihua, Application of the inside-outside temperature relation analysis method in study on satellite infrared anomalies prior to earthquake, Dizhen Dizhi, 29, 4, pp. 863-872, (2007); 
A Study on the Quantitative Thermal Infrared Remote Sensing Method for Extracting Information of Current Tectonic Activity, (2006); 
Seismology and Geology, (2004); 
Crustal Deformation and Earthquake, (1993); 
Kang, Chunli, Long-wave-radiation patterns prior to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 116-120, (2009); 
Chinese Science Bulletin, (1992); 
Liu Defu, OLR anomalous phenomena before strong earthquakes, Earthquake, 17, 2, pp. 126-132, (1997); 
Neural Network Prediction Based on the Thermal Anomaly Information D, (2014); 
Meng, Yafei, Extraction and analysis of seismic thermal anomalies in Xinjiang based on robust satellite techniques, Acta Seismologica Sinica, 42, 2, pp. 205-215, (2020)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, T., Ding, M., Geng, D., Gao, Z., Zheng, H.
AUTHOR FULL NAMES: Huang, Tao (57037451200); Ding, Mingtao (55421086000); Geng, Dongxian (55749138800); Gao, Zemin (57219269884); Zheng, Hao (57218161014)
57037451200; 55421086000; 55749138800; 57219269884; 57218161014
Identifying drivers of urban landuse changes in the Wenchuan earthquake-affected area by using night-time light data
(2024) Journal of Mountain Science, 21 (4), pp. 1140 - 1159, Cited 1 times.
DOI: 10.1007/s11629-023-7940-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85194823675&doi=10.1007%2Fs11629-023-7940-x&partnerID=40&md5=e134e3cf992f3c04f89ec0846af8be0d

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; Sichuan Analysis and Testing Service Center, Chengdu, China
ABSTRACT: To learn the process of urban land evolution before and after an earthquake is vital to formulate the urban reconstruction control policies and recovery measures in the earthquake-stricken areas. However, spatiotemporal evolution and its driving factors of urban land in earthquake-prone areas remains limited due to the scarcity of ground observation data. This research, leveraging night-time light remote sensing imagery and land cover data, conducted a comprehensive analysis of the long-term evolution characteristics of urban land in earthquake-prone areas. It introduced methodologies for assessing the socio-economic impact and the primary natural environmental factors driving urban land evolution in these regions. To validate the proposed methods, the 2008 Wenchuan earthquake-affected area in China was selected as a representative study area. The results indicated that the average Digital Number (DN) values in socio-economically impacted areas showed a trend of rising, falling, and then rising again after the earthquake. DN values in three types of damaged areas including Type II,Type III, and Type IV exceeded pre-earthquake levels. The analysis of determinative factors influencing urban land evolution revealed that slope and elevation were key elements in controlling urban land expansion before the earthquake, whereas factors such as slope, elevation, lithology, and faults had a stronger influence on urban land expansion after the earthquake. It can be seen that, in view of the differences in the natural conditions of regions for post-disaster reconstruction, the local government need to actively adjust and adapt to urban spatial planning, so as to leverage the scale effect of large-scale inputs of funds, facilities, human resources and other factors after the disaster, thus enhancing resilience and recovery efficiency in response to disaster impacts. © Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024.
AUTHOR KEYWORDS: Night-time lights; Post-earthquake reconstruction; Urban land; Wenchuan earthquake
INDEX KEYWORDS: earthquake damage; earthquake event; elevation; fault; land cover; land use change; landscape evolution; lithology; remote sensing; slope; socioeconomic impact; spatial planning; temporal evolution; urban planning; China
REFERENCES: Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
9th International Conference on Digital Image Processing Icdip, (2017); 
Chang, Chungpai, Influence of the pre-existing Xiaoyudong salient in surface rupture distribution of the M w 7.9 Wenchuan earthquake, China, Tectonophysics, 530-531, pp. 240-250, (2012); 
Chen, Chienchih, The 1999 Chi-Chi,Taiwan, earthquake as a typical example of seismic activation and quiescence, Geophysical Research Letters, 32, 22, pp. 1-4, (2005); 
Journal of Engineering, (2019); 
Catena, (2022); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Pengyu, Analysis of the post-earthquake economic recovery of the most severely affected areas in the 2008 Wenchuan earthquake, Natural Hazards, 114, 3, pp. 2633-2655, (2022); 
Chen, Yang, Contribution of urban functional zones to the spatial distribution of urban thermal environment, Building and Environment, 216, (2022)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, M., Tang, C., Xiong, J., Chang, M., Li, N.
AUTHOR FULL NAMES: Chen, Ming (57199453005); Tang, Chuan (35932953300); Xiong, Jiang (57217517892); Chang, Ming (36727157900); Li, Ning (57211181445)
57199453005; 35932953300; 57217517892; 36727157900; 57211181445
Spatio-temporal mapping and long-term evolution of debris flow activity after a high magnitude earthquake
(2024) Catena, 236, art. no. 107716, Cited 25 times.
DOI: 10.1016/j.catena.2023.107716
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178123747&doi=10.1016%2Fj.catena.2023.107716&partnerID=40&md5=24fc6920ec19080c5b9414c2ebed6edf

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; School of Sciences, Xihua University, Chengdu, Sichuan, China
ABSTRACT: A high-magnitude earthquake can trigger substantial amounts of co-seismic debris and unstable hillslopes in mountainous regions, which leads to a significant increase in the frequency and magnitude of post-earthquake debris flows. The long-term impacts of earthquakes on the debris flow activity have not been fully understood, primarily because of a lack of multi-temporal mapping inventories of debris flow activity. Therefore, it is crucial to analyze the spatio-temporal evolution of debris flow activities and their driving factors after the 2008 Wenchuan earthquake for disaster risk management and mitigation from a dynamic perspective. We used the fusion of remote sensing data to develop the first systematic multi-temporal inventory of debris flow activity to quantify changes in spatial and temporal activity of post-earthquake debris flows from 2008 to 2021. Subsequently, we examined the control of material sources, topographic and hydrological factors on the evolution of post-earthquake debris flow activities. A close relationship between the decline in debris flow activity and the reduced active material sources was observed in both time and space, so the supply capacity of hillslope deposits after the earthquake was the first-order indicator controlling post-earthquake debris flow activity. With the progressive depletion and stabilization of co-seismic landslide materials over time, topographic and hydrological factors occupied a dominant role in the occurrence of debris flow. In general, an oscillatory decay pattern of debris flow activity over time was observed after the 2008 Wenchuan earthquake. We observed that the period of post-earthquake debris flow activity varied considerably in different regions attributed to the magnitude of the earthquake, and the geological and climatic environments. Based on the debris flow channel disturbances, the dynamic evolution of landslide materials and hydrodynamics, we divided the debris flow active period after the Wenchuan earthquake into three phases: high activity period (lasting 2 ∼ 5 years), medium activity period (lasting 3 ∼ 10 years), and low activity period (lasting 9 ∼ 18 years). Following the above three activity periods, the debris flow activity will evolve into a steady period. We also proposed a quantitative model for debris flow activeness in the main Wenchuan earthquake-affected area, which predicts that the activeness of debris flows will tend to pre-earthquake levels in 46 years following the earthquake. © 2023 Elsevier B.V.
AUTHOR KEYWORDS: Debris flow activity; Driving factor; Remote sensing; Spatio-temporal evolution; Wenchuan earthquake
INDEX KEYWORDS: debris flow; earthquake magnitude; environmental factor; hillslope; landslide; long-term change; mapping method; remote sensing; Sichuan earthquake 2008; spatiotemporal analysis
REFERENCES: Basharat, Muhammad, Spatial distribution analysis of mass movements triggered by the 2005 Kashmir earthquake in the Northeast Himalayas of Pakistan, Geomorphology, 206, pp. 203-214, (2014); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Ming, Quantitative assessment of physical fragility of buildings to the debris flow on 20 August 2019 in the Cutou gully, Wenchuan, southwestern China, Engineering Geology, 293, (2021); 
Chen, Ming, Changes of surface recovery at coseismic landslides and their driving factors in the Wenchuan earthquake-affected area, Catena, 210, (2022); 
Cheung, Derek J., Debris flow occurrence under changing climate and wildfire regimes: A southern California perspective, Geomorphology, 422, (2023); 
Dahlquist, Maxwell P., Initiation and Runout of Post-Seismic Debris Flows: Insights From the 2015 Gorkha Earthquake, Geophysical Research Letters, 46, 16, pp. 9658-9668, (2019); 
Dai, Lanxin, Coseismic Debris Remains in the Orogen Despite a Decade of Enhanced Landsliding, Geophysical Research Letters, 48, 19, (2021); 
de Haas, Tjalling, How memory effects, check dams, and channel geometry control erosion and deposition by debris flows, Scientific Reports, 10, 1, (2020); 
Densmore, Alexander Logan, Transient landscapes at fault tips, Journal of Geophysical Research: Earth Surface, 112, 3, (2007)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, X., Fan, X., Fang, C., Dai, L., Zhang, W., Zheng, H., Xu, Q.
AUTHOR FULL NAMES: Wang, Xin (57202370573); Fan, Xuanmei (12752112800); Fang, Chengyong (57887775600); Dai, Lanxin (57196005924); Zhang, Wei (59284111400); Zheng, Hongrui (57199646343); Xu, Qiang (56506033600)
57202370573; 12752112800; 57887775600; 57196005924; 59284111400; 57199646343; 56506033600
Long-Term Landslide Evolution and Restoration After the Wenchuan Earthquake Revealed by Time-Series Remote Sensing Images
(2024) Geophysical Research Letters, 51 (2), art. no. e2023GL106422, Cited 23 times.
DOI: 10.1029/2023GL106422
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183867400&doi=10.1029%2F2023GL106422&partnerID=40&md5=f635627f985fe1c587e32da06fe765eb

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Nanjing Hydraulic Research Institute, Nanjing, Jiangsu, China; School of Geoscience and Technology, Southwest Petroleum University China, Chengdu, Sichuan, China
ABSTRACT: A powerful earthquake, particularly in mountainous regions, has the ability to trigger an immense number of landslides, resulting in severe damages. However, effectively assessing their recoveries in the years following the mainshocks has not yet been attempted due to the lack of continuously updated landslide inventories. Therefore, we proposed a novel detection framework utilizing time-series Landsat images from 2000 to 2021, which enabled us to achieve a long-term landslide inventory in the seismic zone for the first time. The response patterns of landslide development under different conditions were explored in detail. The restoration models were quantitatively established, revealing that the recoveries of post-earthquake landslide activity and vital environmental indicators require a range from ∼5.29 to ∼25.00 years. This pioneering research is highly beneficial in comprehending the impact of earthquake-induced hazards on short-term land surface damage and long-term ecological equilibrium. © 2024. The Authors.
AUTHOR KEYWORDS: continuous remote sensing monitoring; land cover disturbance; post-seismic landslide evolution; vegetation restoration; Wenchuan earthquake
INDEX KEYWORDS: Earthquakes; Remote sensing; Restoration; Time series; Continuous remote sensing monitoring; Land cover; Land cover disturbance; Landslide inventories; Post-seismic landslide evolution; Remote sensing monitoring; Seismic landslides; Times series; Vegetation restoration; Wenchuan Earthquake; Landslides; land surface; Landsat; remote sensing; restoration ecology; satellite imagery; seismic zone; China; Sichuan; Wenchuan
REFERENCES: Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Crippen, Robert E., Nasadem global elevation model: Methods and progress, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 41, pp. 125-128, (2016); 
Cruden, David M., A simple definition of a landslide, Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur, 43, 1, pp. 27-29, (1991); 
Cui, Peng, The mechanisms behind shallow failures in slopes comprised of landslide deposits, Engineering Geology, 180, pp. 34-44, (2014); 
Dai, Fuchu, Rock avalanches triggered by oblique-thrusting during the 12 May 2008 Ms 8.0 Wenchuan earthquake, China, Geomorphology, 132, 3-4, pp. 300-318, (2011); 
Modis Terra Vegetation Indices 16 Day L3 Global 250m Sin Grid V061, (2021); 
Fan, Xuanmei, Two multi-temporal datasets that track the enhanced landsliding after the 2008 Wenchuan earthquake, Earth System Science Data, 11, 1, pp. 35-55, (2019); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Fan, Xuanmei, Rapidly Evolving Controls of Landslides After a Strong Earthquake and Implications for Hazard Assessments, Geophysical Research Letters, 48, 1, (2021); 
Frattini, Paolo, The role of material properties and landscape morphology on landslide size distributions, Earth and Planetary Science Letters, 361, pp. 310-319, (2013)
PUBLISHER: John Wiley and Sons Inc
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhao, J., Tian, S., Li, K., Hou, P.
AUTHOR FULL NAMES: Zhao, Jiayi (58926422300); Tian, Shujun (36609420200); Li, Kai (58926422400); Hou, Pengli (58831480200)
58926422300; 36609420200; 58926422400; 58831480200
Susceptibility assessment of debris flow in the upper reaches of the Minjiang River before and after the Wenchuan earthquake 岷江上游汶川地震前后泥石流易发性评价
(2024) Chinese Journal of Geological Hazard and Control, 35 (1), pp. 51 - 59, Cited 5 times.
DOI: 10.16031/j.cnki.issn.1003-8035.202306035
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187171750&doi=10.16031%2Fj.cnki.issn.1003-8035.202306035&partnerID=40&md5=8217e14396f1a56165bd030c2d7bf4fb

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China
ABSTRACT: Accurately and scientifically mapping debris flow susceptibility and the determination of key controlling factors and their contribution rates are essential foundations for regional debris flow early warning, forecasting and risk management. The article takes the upper reaches of the Minjiang River as the research area, with small watersheds as evaluation units. Five different machine learning models were employed to construct evaluation models for the susceptibility of debris flows in the upper reaches of the Minjiang River. Quantitative analyses were conducted on the susceptibility of debris flows and the contribution rates of evaluation factors before and after the Wenchuan earthquake. The results indicate that: (1) Integrated machine learning models exhibit higher ACC and AUC values than the shallow machine learning models, with the random forest model performing the best in the assessment of debris flow susceptibility before and after the earthquake; (2) The occurrence rate of debris flow before and after the earthquakes gradually increases with the rise in susceptibility level, and the increment increases with the increase of the level. The occurrence rate of debris flow at all levels is higher after the earthquake than before; (3) The contribution rate of the erosion transmission coefficients before and after the earthquake is significantly higher than that of other factors. This contribution is compounded by the spatial distribution characteristics of the Wenchuan earthquake intensity, further accentuating the spatial distribution pattern of decreasing debris flow development from downstream to upstream in both the main and tributaries following the earthquake. © 2024 Editorial Office of The Chinese Journal of Geological Hazards and Control. All rights reserved.
AUTHOR KEYWORDS: debris flow; machine learning; susceptibility; the Wenchuan earthquake; upper reaches of the Minjiang River
REFERENCES: Simoni, Silvia, Modelling the probability of occurrence of shallow landslides and channelized debris flows using GEOtop-FS, Hydrological Processes, 22, 4, pp. 532-545, (2008); 
Science Technology and Engineering, (2020); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Zhang, Wentao, Damage evaluation of control works against debris flow: A case study in Wenchuan area, Chinese Journal of Geological Hazard and Control, 33, 4, pp. 77-83, (2022); 
Wen, Qiang, Analysis on the mechanism of debris flow in Meilong valley in Danba County on June 17，2020, Chinese Journal of Geological Hazard and Control, 33, 3, pp. 23-30, (2022); 
Sun, Bin, Susceptibility assessment of debris flows based on information model in Dongchuan, Yunnan Province, Chinese Journal of Geological Hazard and Control, 33, 5, pp. 119-127, (2022); 
Wang, Feng, Susceptibility assessment of debris flow based on watershed units in Kangding City, Sichuan Province, Chinese Journal of Geological Hazard and Control, 34, 3, pp. 145-156, (2023); 
Yang, Dehu, Comparative analyses of susceptibility assessment for landslide disasters based on information value, weighted information value and logistic regression coupled model in Luoping County, Yunnan Province, Chinese Journal of Geological Hazard and Control, 34, 5, pp. 43-53, (2023); 
Yi, Jingsong, Study on the risk assessment of geological disasters in alpine valley area: A case study in Aba County, Sichuan Province, Chinese Journal of Geological Hazard and Control, 33, 3, pp. 134-142, (2022); 
Research and Application on Model Blending Algorithm, (2016)
PUBLISHER: Editorial Office of The Chinese Journal of Geological Hazards and Control
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, S.-Z., Qian, Y.-J.
AUTHOR FULL NAMES: Li, Shizhu (26641946500); Qian, Yingjun (26642001200)
26641946500; 26642001200
Techniques for Risk Assessment
(2024), pp. 195 - 220, Cited 0 times.
DOI: 10.1007/978-981-97-1241-0_10
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105003336673&doi=10.1007%2F978-981-97-1241-0_10&partnerID=40&md5=21ba12c53161db981af5014fa8fa0490

AFFILIATIONS: Chinese Center for Tropical Diseases Research, Chinese Center for Disease Control and Prevention, Beijing, China
ABSTRACT: Risk assessment is an important component in public health surveillance and early warning of emergencies as well as an important means of early detection, identification, and assessment of event risks. Timely risk assessment can effectively prevent or reduce the possible impacts and harms caused by outbreak events. At present, the WHO and health agencies in many countries consider risk assessment to be an important measure for dealing with public health emergencies. In 2010, the WHO also included risk assessment as a core competency in its strategy for the prevention and control of emerging and reemerging diseases. During the Beijing Olympic Games, Shanghai World Expo, and major natural disasters, such as the Wenchuan earthquake and Yushu earthquake, China carried out many public health risk assessments and gained some experience. In 2011, in the process of preventing and responding to the outbreak of enterohemorrhagic Escherichia coli (EHEC) in Germany, risk assessment, as a red line, ran throughout the emergency response work, playing a very important role in gaining a timely understanding of the epidemic trend and dynamically adjusting the response strategy. © People’s Medical Publishing House, PR of China 2024.
PUBLISHER: Springer Nature
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Tian, X., Yang, L., Wu, X., Wu, J., Guo, Y., Guo, Y., Chen, H., Li, J., Lin, Y.
AUTHOR FULL NAMES: Tian, Xue (57810483900); Yang, Liusheng (57223991923); Wu, Xuan (58303895900); Wu, Jianzhao (57203663248); Guo, Yiting (58001187200); Guo, Yuhao (58782922800); Chen, Hui (57144814700); Li, Jian (47161257300); Lin, Yongming (8869314500)
57810483900; 57223991923; 58303895900; 57203663248; 58001187200; 58782922800; 57144814700; 47161257300; 8869314500
Landscape Fragmentation and Spatial Autocorrelation of a Typical Watershed in the Wenchuan Earthquake-Affected Area—A Case Study in the Longxi River Basin
(2023) Forests, 14 (12), art. no. 2349, Cited 5 times.
DOI: 10.3390/f14122349
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85180723177&doi=10.3390%2Ff14122349&partnerID=40&md5=bcfb88db3c85d852035f8b3118478541

AFFILIATIONS: College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China; Northwest A&F University, Yangling, Shaanxi, China; Key Laboratory for Forest Ecosystem Process and Management of Fujian Province, Fuzhou, Fujian, China
ABSTRACT: The 2008 8.0 Ms Wenchuan earthquake caused serious ecological degradation in the northwest of China’s Sichuan Province. Elucidating landscape fragmentation and spatial pattern of post-earthquake landscape is of great interest in order to improve ecological restoration and predict the spatial distribution of damaged ecosystems in earthquake-affected areas. We used four real-time remote sensing images to analyze the landscape pattern characteristics and spatial autocorrelation of the Longxi River Basin before and after the Wenchuan earthquake during the period from 2005 to 2015. In the study period, the degree of landscape fragmentation increased 1 year after the earthquake in 2009 but decreased in 2011 and 2015. The spatial distribution of forest, farmland, and shrub-grassland had significantly positive spatial correlation and the characteristics of spatial aggregation from 2005 to 2015. Construction land had no significant spatial correlation before the earthquake in 2005, but significantly positive spatial correlation after the earthquake, while traffic land had no significant spatial correlation across the study period. Unlike the other landscape types, geological disasters changed from a significantly negative spatial correlation before the earthquake to a significantly positive spatial correlation after the earthquake. However, the positive autocorrelation of all landscape types decreased with the increase of space distance, but in different distance-decay rates. The High-high spatial aggregation areas of geological disasters and construction land clustered gradually upstream of the basin and distributed in Longchi town, respectively; those of farmland distributed in the southeast of the basin increased in 2009 but then decreased, while those of forests had the opposite pattern as the dominant landscape type after the earthquake. Our results elucidated the spatial structure and distribution features of the Longxi River Basin to give a theoretical foundation for assessing the effects of ecological restoration and reconstruction management in earthquake-affected areas. © 2023 by the authors.
AUTHOR KEYWORDS: landscape fragmentation; landscape pattern; spatial autocorrelation; typical watershed; Wenchuan earthquake
INDEX KEYWORDS: Autocorrelation; Decay (organic); Earthquakes; Farms; Forestry; Remote sensing; Restoration; Rivers; Spatial distribution; Spatial variables measurement; Affected area; Ecological restoration; Landscape fragmentation; Landscape pattern; Landscape type; River basins; Spatial autocorrelations; Spatial correlations; Typical watershed; Wenchuan Earthquake; Watersheds; autocorrelation; landscape change; Sichuan earthquake 2008; spatial distribution; watershed; Correlation; Distribution; Fragmentation; Patterns; Remote Sensing; China; Sichuan; Wenchuan
REFERENCES: Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Allen, Robert B., Immediate damage by an earthquake to a temperate montane forest, Ecology, 80, 2, pp. 708-714, (1999); 
Zhang, Jindong, Impact of the 2008 Wenchuan earthquake on biodiversity and giant panda habitat in Wolong Nature Reserve, China, Ecological Research, 26, 3, pp. 523-531, (2011); 
Zhang, Bing, Estimating soil erosion changes in the Wenchuan earthquake disaster area using geo-spatial information technology, Journal of Applied Remote Sensing, 3, 1, (2009); 
He, Jing, Effect of landslides on the structural characteristics of land-cover based on complex networks, International Journal of Modern Physics B, 31, 22, (2017); 
Sheykhmousa, Mohammadreza, Post-disaster recovery assessment with machine learning-derived land cover and land use information, Remote Sensing, 11, 10, (2019); 
Qiu, Haijun, Influence of DEM resolution on landslide simulation performance based on the Scoops3D model, Geomatics, Natural Hazards and Risk, 13, 1, pp. 1663-1681, (2022); 
Tian, Xue, Spatiotemporal Dynamic Characteristics of Land Use in the Typical Watershed of Wenchuan Earthquake-Affected Areas—A Case Study in the Longxi River Basin, Sustainability (Switzerland), 14, 23, (2022); 
Jelének, Jan, Synergic use of Sentinel-1 and Sentinel-2 data for automatic detection of earthquake-triggered landscape changes: A case study of the 2016 Kaikoura earthquake (Mw 7.8), New Zealand, Remote Sensing of Environment, 265, (2021); 
Li, Congrong, Landscape evolution of the Wenchuan earthquake-stricken area in response to future climate change, Journal of Hydrology, 590, (2020)
PUBLISHER: Multidisciplinary Digital Publishing Institute (MDPI)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Xu, F.-G., Ou, Y.-H., Wang, F., Wei, B.-W., Ruokun-Nie
AUTHOR FULL NAMES: Xu, Fugang (55217483800); Ou, Yi Heng (58651911000); Wang, Feng (58650770600); Wei, Bowen (54390465900); Ruokun-Nie (58650770700)
55217483800; 58651911000; 58650770600; 54390465900; 58650770700
Risk assessment of geological disasters in Beichuan County after the Wenchuan earthquake based on ArcGIS
(2023) Bulletin of Engineering Geology and the Environment, 82 (11), art. no. 416, Cited 7 times.
DOI: 10.1007/s10064-023-03421-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174234329&doi=10.1007%2Fs10064-023-03421-y&partnerID=40&md5=6951fe730fbefafab8094e4a03d424ff

AFFILIATIONS: School of Infrastructure Engineering, Nanchang University, Nanchang, Jiangxi, China; Jiangxi Water Resources Institute, Nanchang, Jiangxi, China
ABSTRACT: Extreme geological disasters have been occurring with increasing frequency, especially in Southwest China, seriously affecting people’s lives and production. It is necessary and urgent to quickly assess the risk level of geological disasters and formulate reasonable emergency measures. In this paper, we take Beichuan Qiang Autonomous County (hereinafter referred to as Beichuan County) after the Wenchuan earthquake as an example, use ArcGIS software and SPSS software to determine the optimal geological disaster evaluation factors, and apply the frequency ratio model method (FR) to evaluate the susceptibility risk of the study area. Geological hazard risk assessment (R) combines the hazard assessment (H) and the vulnerability assessment of the hazard-bearing body (V), namely, R = H × V. The hazard assessment is based on the vulnerability assessment zoning map, which is obtained by overlaying the danger level onto each village, thus producing a danger assessment zoning map. H is then combined with the vulnerability assessment zoning map of the bearing body, which is obtained via the fuzzy comprehensive evaluation method, and the final risk assessment result is achieved. The results show that the medium- and high-risk areas make up the vast majority of the study area. Qushan town, Yong’an town, and Xiaoba town are extremely high-risk areas with both high risk and high vulnerability and therefore need to be the focus of prevention and control measures. The results of this study can provide a scientific basis for geological disaster management, monitoring, forecasting, emergency disaster relief, and environmental protection; furthermore, they have a certain reference value for early warning of geological disaster risks. © 2023, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Beichuan County; Geological disaster; GIS; Risk assessment; Wenchuan earthquake
INDEX KEYWORDS: Disaster prevention; Disasters; Earthquakes; Geographic information systems; Geology; Hazards; Maps; Zoning; Beichuan county; Geological disaster; Hazard Assessment; High-risk areas; Risks assessments; Southwest China; Study areas; Vulnerability assessments; Wenchuan Earthquake; Zoning maps; Risk assessment; ArcGIS; hazard assessment; natural disaster; risk assessment; Sichuan earthquake 2008; software; vulnerability; Beichuan; China; Sichuan
REFERENCES: Bao, Han, Sliding mechanical properties of fault gouge studied from ring shear test-based microscopic morphology characterization, Engineering Geology, 279, (2020); 
Bronowski, Błażej, Landslide susceptibility mapping in the Beskid Niski Mts., western Carpathians (Dukla commune, Poland), Geological Quarterly, 60, 3, pp. 586-596, (2016); 
Book Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering Beijing China, (2022); 
Devrani, Rahul, Characterization and assessment of flood inundated areas of lower Brahmaputra River Basin using multitemporal Synthetic Aperture Radar data: A case study from NE India, Geological Journal, 57, 2, pp. 622-646, (2022); 
Safety Environ Eng, (2025); 
Journal of Engineering Geology, (2021); 
Book Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering Beijing China 15 17 July 2022, (2022); 
Jiang, Weiguo, Comparative evaluation of geological disaster susceptibility using multi-regression methods and spatial accuracy validation, Journal of Geographical Sciences, 27, 4, pp. 439-462, (2017); 
Kang, Huan, Zircon U-Pb ages and Hf isotopic compositions of fluvial sediments from the Huangshui, Beichuan, and Xichuan rivers, Northwest China: Constraints on the formation and evolution history of the Central Qilian Block, Geochemical Journal, 52, 1, pp. 37-57, (2018); 
Karymbalis, Efthimios, Integration of gis-based multicriteria decision analysis and analytic hierarchy process for flood-hazard assessment in the megalo rema river catchment (East attica, greece), Sustainability (Switzerland), 13, 18, (2021)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Song, D.-M., Wang, H., Shan, X.-J., Wang, B., Cui, J.-Y.
AUTHOR FULL NAMES: Song, Dongmei (56427407300); Wang, Hui (59294134700); Shan, Xianjian (7101712284); Wang, Bin (57204241476); Cui, Jianyong (56814102700)
56427407300; 59294134700; 7101712284; 57204241476; 56814102700
STRESS-INDUCED HEATING HYPOTHESIS BASED ON CORRELATION ANALYSIS OF GRAVITY AND THERMAL FIELDS BEFORE WENCHUAN EARTHQUAKE 基于汶川地震前重力场与热场关联性分析的应力致热假说的野外证明
(2023) Dizhen Dizhi, 45 (5), pp. 1112 - 1128, Cited 1 times.
DOI: 10.3969/j.issn.0253-4967.2023.05.005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181680336&doi=10.3969%2Fj.issn.0253-4967.2023.05.005&partnerID=40&md5=737ee1edbc2da985f5527f27ecfef4d9

AFFILIATIONS: College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao, Shandong, China; Graduate School, China University of Petroleum (East China), Qingdao, Shandong, China; Institute of Geology, China Earthquake Administration, Beijing, China
ABSTRACT: As one of the most serious geological disasters, earthquake is of sudden and destructive characteristic. Therefore, it is of great significance to earthquake monitoring and early warning. The phenomenon of surface thermal infrared radiation enhancement is a common precursor of moderate and strong earthquakes and has been used as an important reference information for early warning and short term prediction. A variety of explanations have been given to understand internal mechanism of the above phenomenon, in which the stress-induced heating hypothesis is widely accepted and has been confirmed in the laboratory rock mechanical loading experiments, that is, under ideal conditions in the laboratory, the rock heats up when it is pressed and cools down when it is stretched. Under field conditions in practice, however, weak seismic precursors of thermal anomalies are often interfered by various environmental factors (solar radiation, atmospheric movement and human activities, etc.), and it has not been investigated whether the corresponding relationship between the above crustal compression-extension motions and thermal radiation anomalies can be observed under field conditions. The earth's gravity field, as one of the basic physical fields of the earth, contains the density distribution of crustal structure, which can be served to study the migration of the earth's material, the deformation of the crust and the change of the stress field. In this paper, we use GRACE gravity and MODIS thermal infrared remote sensing data to verify the stress-induced heat hypothesis in the field with Wenchuan earthquake as the time node. Firstly, the crustal mass density obtained by GRACE satellite was compared with thermal infrared radiation. Then, the gravity anomalies extraction method based on maximum shear strain and in-situ temperature method were used to obtain the gravity anomalies and thermal anomalies respectively. Furthermore, the correlation between the two anomalies before the earthquake was detected from the time scale and space scale respectively, and the consistency analysis between the above anomalies and the spatial distribution of the tectonic fault zone was carried out. For this purpose, two important indicators i. e., anomaly intensity and anomaly distribution, were established in time domain and space domain, respectively. The following conclusions could be drawn : 1) The stress-induced heating hypothesis can be verified by remote sensing in field conditions. The warming zone of the crust(positive thermal offset index) corresponds to the compression zone, and the cooling zone (negative thermal offset index) corresponds to the stretching zone. The consistency of positive and negative variation between the crustal mass density and thermal offset index is 88.9%, which provides field observation evidence for the stress-induced heating hypothesis. 2) The spatio-temporal variation of gravity anomalies and thermal anomalies before earthquake has strong correlation. In the time domain, there is a strong correlation between the gravity anomalies and the thermal anomalies, which shows that the intensity of the two anomalies suddenly increases synchronously and reaches the maximum simultaneously three months before the earthquake. In the spatial domain, gravity anomalies mostly occur at the junction of positive and negative values of thermal offset index, which indicates that the spatial distribution of gravity anomalies and thermal anomalies also has a certain correlation. In addition, the two anomalies appear to be distributed along the fault zone for many times, which shows that they are closely related to tectonic activities. © 2023 State Seismology Administration. All rights reserved.
AUTHOR KEYWORDS: Correlation analysis; Gravity anomalies; Longmenshan fault zone; Thermal anomalies; Wenchuan earthquake
INDEX KEYWORDS: Earth (planet); Faulting; Geodetic satellites; Infrared radiation; Orbits; Remote sensing; Shear strain; Time domain analysis; Correlation analysis; Crustals; Field conditions; Gravity anomalies; Induced heating; Longmenshan fault zone; Stress-induced; Thermal anomalies; Thermal offset; Wenchuan Earthquake; Earthquakes; compression; correlation; deformation mechanism; fault zone; GRACE; gravity anomaly; heating; MODIS; remote sensing; satellite data; Sichuan earthquake 2008; temperature anomaly; China; Sichuan; Wenchuan
REFERENCES: Chen, Shunyun, Evidence from seismological observation for detecting dynamic change in crustal stress by bedrock temperature, Chinese Science Bulletin, 65, 22, pp. 2395-2405, (2020); 
Zhou, Jiangcun, Exploring co-seismic thermal response of Wenchuan earthquake by using land surface Temperatures of Terra and Aqua Satellites, Acta Geophysica Sinica, 56, 11, pp. 3788-3789, (2013); 
Li, Chong, Discussion of crustal flow beneath the eastern tibetan plateau and mechanism of the Wenchuan earthquake, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 40, 6, pp. 810-815, (2015); 
Theories and Methods of Spatio Temporal Outliers Detection, (2009); 
Liu, Wenbao, Seismic thermal infrared anomaly extraction based on skewness, Dizhen Dizhi, 42, 6, pp. 1509-1524, (2020); 
Liu, Yuguo, Research progress and prospect of the relationship among active tectonics，earthquakes and geological disasters in China, Journal of Natural Disasters, 31, 1, pp. 1-14, (2022); 
Progress in Earthquake Sciences, (2021); 
Chinese Science Bulletin, (1992); 
Journal of Seismological Research, (2007); 
Journal of Geodesy and Geodynamics, (2018)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, Y., Huang, H., Xie, Z., She, T., Li, J.
AUTHOR FULL NAMES: Tian, You (57218293641); Huang, Hai (57218266287); Xie, Zhongsheng (57215292060); She, Tao (55295536200); Li, Jinyang (59535829400)
57218293641; 57218266287; 57215292060; 55295536200; 59535829400
A study of activity history and formation mechanism of Tangjiawan landslide in Beichuan section of Yingxiu-Beichuan fault zone 映秀-北川断裂带北川段唐家湾滑坡活动历史与形成机制
(2023) Sedimentary Geology and Tethyan Geology, 43 (3), pp. 629 - 639, Cited 1 times.
DOI: 10.19826/j.cnki.1009-3850.2022.03004
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216593431&doi=10.19826%2Fj.cnki.1009-3850.2022.03004&partnerID=40&md5=2a88f8c36e4894a978ee7cac704e295b

AFFILIATIONS: Institute of Exploration Technology, CAGS, Chengdu, Sichuan, China; Technical Center for Geological Hazard Prevention and Control, CGS, Chengdu, Sichuan, China; Institute of Multipurpose Utilization of Mineral Resources, CAGS, Chengdu, Sichuan, China
ABSTRACT: This paper takes the Tangjiawan landslide in the Beichuan section of the Yingxiu-Beichuan fault zone as its research object, combines terrain data, multi-period remote sensing and aerial images, and 14C dating data, and subdivides the activity history of the Tangjiawan landslide.The main controlling factors for the resurgence of the Tangjiawan landslide in 2016 are analyzed. The research results can be summarized as follows: (1) There have been at least four periods of slippage in the history of the Tangjiawan slope. Among them, the first landslide occurred before the Holocene, the second occurred in the early Holocene, the third occurred during the 2008 Wenchuan earthquake and was a coseismic landslide generated during the activity of the Longmenshan fault zone, and the fourth occurred in 2016 and 2018, respectively, which were caused by the local resurgence of landslide deposits in the fault zone; (2) The formation of the Tangjiawan landslide in 2016 was related to factors such as fault activity, river lateral erosion, and water. Among them, the binary slope structure formed by the overlying landslide accumulation body and the underlying high and steep bedrock is the decisive condition for the occurrence of the Tangjiawan landslide. The fault activity and the maximum principal stress deflection caused by it should be the important internal cause of the landslide deformation; (3) The geological model of the resurrection of landslide deposits in the fault zone based on the control of topographical conditions has been preliminarily discussed in Tangjiawan landslide. The evolution processes are the formation of landslides or steep terrain due to fault zone activity and river erosion, the back wall or steep terrain of the previous landslide accepting the accumulation of the upper old landslides, and the resurrection of the old landslide under the control of the dual slope structure. This landslide provides a unique case for studying the landslide revival in the fault zone controlled by topography. The research results have important reference value for understanding and evaluating this type of landslide, and carrying out comprehensive prevention and control. © 2023 The Editorial Staff of Sedimentary Geology and Tethyan Geology. All rights reserved.
AUTHOR KEYWORDS: Beichuan County in Sichuan Province; Coseismic landslide; land slide reactivation; topographic conditions; Yinxiu–Beichuan fault
REFERENCES: Chen, Guoguang, Primary research of activity segmentation of Longmenshan fault zone since late-quaternary, Dizhen Dizhi, 29, 3, pp. 657-673, (2007); 
Journal of Mountain Science, (2010); 
Cruden, David M., Landslide types and processes, Special Report - National Research Council, Transportation Research Board, 247, pp. 36-75, (1996); 
Journal of Mountain Science, (2008); 
Dai, Fuchu, Rock avalanches triggered by oblique-thrusting during the 12 May 2008 Ms 8.0 Wenchuan earthquake, China, Geomorphology, 132, 3-4, pp. 300-318, (2011); 
Deng, Hui, Formation of the Siwanli ancient landslide in the Dadu River, China, Landslides, 14, 1, pp. 385-394, (2017); 
Acta Geoscientica Sinica, (2008); 
Journal of Geodesy and Geodynamics, (2017); 
Guo, Jian, Formation and reactivation mechanism of an ancient landslide in Heishui reservoir of Minjiang River, China, Journal of Chengdu University of Technology (Science and Technology Edition), 40, 6, pp. 721-728, (2013); 
Huang, Runqiu, Large-scale landslides and their sliding mechanisms in China since the 20th century, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 26, 3, pp. 433-454, (2007)
PUBLISHER: The Editorial Staff of Sedimentary Geology and Tethyan Geology
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, S., Miao, Z., Wu, L.
AUTHOR FULL NAMES: Chen, Shuai (57203314671); Miao, Zelang (55388064200); Wu, Lixin (55714061400)
57203314671; 55388064200; 55714061400
Probabilistic seismic landslide hazard mapping with consideration of slope occurrence environment 顾及坡体赋存环境的概率地震滑坡危险性制图
(2023) Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 52 (9), pp. 1548 - 1561, Cited 0 times.
DOI: 10.11947/j.AGCS.2023.20220213
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175291876&doi=10.11947%2Fj.AGCS.2023.20220213&partnerID=40&md5=ddb519a61d034ae89b8a69eb2a62ee6b

AFFILIATIONS: School of Geosciences and Info-Physics, Central South University, Changsha, Hunan, China; Laboratory of GeoHazards Perception . Cognition and Predieation, Central South University, Changsha, Hunan, China
ABSTRACT: Displacement model is a significant method for probabilistic seismic landslide hazard assessment. However, as the main inputs of the displacement model, the physical-mechanical parameters of rock mass only consider the lithological differences, while the spatial heterogeneous of the rock mass strength resulted from the slope occurrence environment was ignored before, which affects the reliability of the seismic landslide hazard assessment. Based on analysis to co-seismic landslides resulted from Wenchuan earthquake and study on the weighting of impact factors, this paper presents a new method for probabilistic seismic landslide hazard assessment with consideration of slope occurrence environment and develops a group of ArcGIS-based modules for probabilistic seismic landslide hazard mapping. Taking Kangding as an experimental example, the reliability of the proposed method is verified by using the landslides from remote sensing visual interpretation and field survey. Finally, according to the peak ground acceleration under different earthquake scenarios provided by the fifth-generation seismic ground motion parameters zonation map of China, the permanent seismic displacements of Kangding under different earthquake scenarios are computed, and the seismic landslide hazards are mapped. The results show that under the frequently encountered earthquake scenario, some areas in Kangding are high seismic landslide hazard areas mainly affected by the tectonic environment and rainfalls; while under the rarely encountered earthquake scenario, the area seriously affected by earthquakes in Kangding increases significantly and shows an obvious spatially clustering distribution, especially in the vicinity of Kangding and where along Kangding-Luding segment of national highway G318. Besides, the uncertainty of seismic landslide hazard mapping caused by rock mass strength difference is quantified and analyzed, which shows that rock mass strength is critical for the uncertainty of assessment results. For application, suitable rock mass strengths should be selected for different scenarios to conduct probabilistic seismic landslide hazard assessment and mapping. The presented method expands the GIS application in geohazard mapping, which is of general adaptability and could be improved further. The experimental results are valuable for future land planning and utilization in Kangding, and for prevention of earthquake-induced landslide and safeguard of Sichuan-Tibet railway. © 2023 SinoMaps Press. All rights reserved.
AUTHOR KEYWORDS: ArcGIS; displacement model; landslide hazard mapping; occurrence environment; probabilistic seismic landslide
INDEX KEYWORDS: Acceleration; Earthquakes; Hazards; Lithology; Mapping; Remote sensing; Rock mechanics; Rocks; Seismic response; Uncertainty analysis; ArcGIS; Displacement model; Earthquake scenario; Landslide hazard assessment; Landslide hazard mapping; Occurrence environment; Probabilistic seismic landslide; Probabilistics; Rock mass strength; Seismic landslides; Landslides; displacement; earthquake event; ground motion; hazard assessment; landslide; mapping method; remote sensing; road; rock mass classification; slope; China
REFERENCES: Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Journal of Engineering Geology, (2013); 
Guzzetti, Fausto, Estimating the quality of landslide susceptibility models, Geomorphology, 81, 1-2, pp. 166-184, (2006); 
Du, Ping, Rapid mapping of emergency scenario and cartographic information transmission, Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 48, 6, pp. 747-755, (2019); 
Jibson, Randall W., A method for producing digital probabilistic seismic landslide hazard maps, Engineering Geology, 58, 3-4, pp. 271-289, (2000); 
Yigit, Adil, Prediction of amount of earthquake-induced slope displacement by using Newmark method, Engineering Geology, 264, (2020); 
Wang, Tao, Inversion of the inducing effects of historical strong earthquakes on large-scale landslides around the middle reaches of the Weihe River, Acta Geoscientica Sinica, 36, 3, pp. 353-361, (2015); 
Zhang, Yongshuang, Predicting landslide scenes under potential earthquake scenarios in the Xianshuihe fault zone, Southwest China, Journal of Mountain Science, 14, 7, pp. 1262-1278, (2017); 
Chen, Xiaoli, Applying the Newmark's model to the assessment of earthquake-triggered landslides during the Lushan earthquake, Dizhen Dizhi, 35, 3, pp. 661-670, (2013); 
Dreyfus, Daniel, The influence of different simplified sliding-block models and input parameters on regional predictions of seismic landslides triggered by the Northridge earthquake, Engineering Geology, 163, pp. 41-54, (2013)
PUBLISHER: SinoMaps Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Z., Li, S., Ge, X.
AUTHOR FULL NAMES: Li, Zhen (57310792800); Li, Shanshan (56239889900); Ge, Xiaoqing (57225014655)
57310792800; 56239889900; 57225014655
Transfer learning method for landslide extraction from GF-1 images after the Wenchuan earthquake 迁移学习方法提取高分一号影像汶川地震震后滑坡
(2023) National Remote Sensing Bulletin, 27 (8), pp. 1866 - 1875, Cited 4 times.
DOI: 10.11834/jrs.20211020
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149235380&doi=10.11834%2Fjrs.20211020&partnerID=40&md5=99deb2d339a092d4f743146d8b2fafa6

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Landslides are natural disasters that are driven by various factors and often leave catastrophic damages and casualties. A huge earthquake can trigger plenty of landslides. Therefore, landslide extraction is critical to provide timely information for post-disaster decision making. Remote sensing is a convenient tool for landslide information acquisition. However, landslide features are so intricate that landslide extraction mainly relies on a visual interpretation of aerial photographs or high-resolution remote sensing images, which requires vast manpower. Several landslide extraction methods are available today, including pixel-based methods, which have relatively low accuracy, and object-oriented methods, whose parameters need to be decided subjectively. With the continuous development of deep learning in image semantic segmentation, a precise and automatic remote sensing image binary classification becomes possible. Many researchers have investigated the use of deep learning for landslide extraction in different areas. However, a relatively small amount of landslide data can easily lead to model overfitting. Transfer learning, where knowledge is transferred from the source domain to the target domain, can alleviate this problem by using knowledge in the source domain to improve performance in the target task. A transfer learning deep network is then designed to improve the accuracy of landslide extraction. First, three GF-1 images taken from 2013 to 2015 in the research area were processed successively by geometric correction, registration, and image fusion to obtain 4 bands of images (red, green, blue, and near-infrared) with a resolution of 2 m. Second, a proper network was designed. The encoder of ResNet that was trained on ImageNet was chosen as the encoder, and the decoder of LinkNet, whose residual structure and bypass links can improve performance, was selected as the decoder. The bypass links in the decoder can also address the spatial information loss in max-pooling in the encoder, and the residual structure allows the network to learn complex features. After pre-training the ResNet network on ImageNet, we adjusted the number of input channels of the first convolution layer to 4, drop the last fully connected layer, and then form our network with the decoder. We eventually inputted remote sensing landslide images to finetune our model. When testing different network depths, the network does not always perform better as the depth increases. We chose ResNet50 as our encoder given its peak performance. Afterward, we compared our method with SVM. Without a pre-training encoder, our network improves U-Net and a mainstream transfer learning method, AlbuNet, thereby suggesting that deep learning methods outperform SVM, whereas transfer learning methods outperform deep learning methods that are trained on landslide images. The proposed method outperforms SVM in terms of precision, recall, and F1 measure by 17.16%, 18.58%, and 17.4%, respectively, outperforms the improved U-Net by 2.98%, 6.35%, and 4.61%, and outperforms AlbuNet by 0.9%, 1.98%, and 1.48%. The ResNet50 encoder combined with the LinkNet decoder should be selected to form a landslide extraction network with a higher accuracy compared with the transfer learning network AlbuNet and other ResNet encoders of different depths. Transferring knowledge learned from ImageNet can also improve the performance of the landslide extraction deep learning network. The proposed method can be used conveniently for follow-up landslide risk assessment, disaster investigation, disaster warning, and decision making. © 2023 National Remote Sensing Bulletin
AUTHOR KEYWORDS: GF-1; ImageNet; landslide extraction; remote sensing; transfer learning
INDEX KEYWORDS: Antennas; Decision making; Decoding; Deep learning; Disasters; Image enhancement; Image fusion; Infrared devices; Landslides; Learning systems; Remote sensing; Semantic Segmentation; Semantics; Signal encoding; Decisions makings; GF-1; Imagenet; Improve performance; Landslide extraction; LinkNet; Remote-sensing; Residual structure; Transfer learning; Transfer learning methods; Extraction
REFERENCES: An, Liqiang, Extracting secondary disaster of Wenchuan earthquake: Application of object-oriented image-classifying technology, Journal of Natural Disasters, 20, 2, pp. 160-168, (2011); 
Dai, Wenyuan, Co-clustering based classification for out-of-domain documents, Proceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp. 210-219, (2007); 
Fan, Jianrong, Geometrical feature analysis and disaster assessment of the Xinmo landslide based on remote sensing data, Journal of Mountain Science, 14, 9, pp. 1677-1688, (2017); 
He, Kaiming, Deep residual learning for image recognition, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2016-December, pp. 770-778, (2016); 
Bull Surv Mapp, (2018); 
Lecun, Yann Le, Deep learning, Nature, 521, 7553, pp. 436-444, (2015); 
Li, Qiang, Recognition of earthquake-induced landslide and spatial distribution patterns triggered by the Jiuzhaigou earthquake in August 8, 2017, National Remote Sensing Bulletin, 23, 4, pp. 785-795, (2019); 
Remote Sensing Information, (2015); 
Journal of Catastrophology, (2011); 
Liu, Peng, Research on post-earthquake landslide extraction algorithm based on improved U-net model, Remote Sensing, 12, 5, (2020)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Zhang, S., Peng, J.Y., Zhang, M.P., Chen, Y.B., Han, Y.Y., Su, C.X., Zhuang, D.Y.
AUTHOR FULL NAMES: Zhang, Shuai (55092670700); Peng, Jingyu (57222517340); Zhang, Mingpeng (57755409800); Chen, Yanbo (57203418749); Han, Yingyue (57355661900); Su, Chenxu (57754746400); Zhuang, Duanyang (57095503900)
55092670700; 57222517340; 57755409800; 57203418749; 57355661900; 57754746400; 57095503900
Evolution of debris flow activities in the epicentral area, 10 years after the 2008 Wenchuan earthquake
(2023) Engineering Geology, 319, art. no. 107118, Cited 9 times.
DOI: 10.1016/j.enggeo.2023.107118
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152417273&doi=10.1016%2Fj.enggeo.2023.107118&partnerID=40&md5=13a5d9801a0ee64917ca72bf8baeac77

AFFILIATIONS: Zhejiang University, Hangzhou, Zhejiang, China
ABSTRACT: The occurrence of debris flows after the earthquake not only damaged infrastructure but also caused large numbers of casualties. Analyzing the evolution of debris flows after the Wenchuan earthquake is significant for understanding the long-term impacts of the earthquake on the subsequent debris flow activities. This study made a continuous track of mass movements of loose deposits in all debris flow gullies from 2008 to 2018 along Provincial Road 303 (PR303) after the Wenchuan earthquake according to remote sensing images interpretation and field investigations. Four aspects, i.e. vegetation recovery, source materials, runout characteristics, and human activities were analysed to describe the evolution laws based on the 10-year inventory of debris flows. The loose deposits on the hillslope were found to be gradually transported into channels. A declining trend of mass transport rate from 2010 (24.5%) to 2018 (6.5%) was found. The occurrence frequency, magnitude, and mobility of debris flows were found to decrease. Recovery of vegetation made the loose deposits stable, whereas human activities of excavation of debris flows deposits promoted the occurrence of landslides. Three stages were divided for debris flows activities: the active period (2010–2014), the unstable period (2014–2017), and the recession period (after 2017). The decreasing trend of debris flows in the future is predicted. © 2023
AUTHOR KEYWORDS: Debris flow; Landslide; Long-term evolution; Risk; Wenchuan earthquake
INDEX KEYWORDS: Debris; Deposits; Earthquakes; Long Term Evolution (LTE); Remote sensing; Vegetation; 2008 wenchuan earthquakes; Damaged infrastructure; Debris flow activities; Debris flows; Epicentral area; Human activities; Long-term evolution; Long-term impacts; Loose deposits; Wenchuan Earthquake; Landslides; debris flow; earthquake epicenter; gully erosion; landslide; risk assessment; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: Cao, Chen, Quantitative estimation of debris flow source materials by integrating multi-source data: A case study, Engineering Geology, 291, (2021); 
Chang, Ming, Evolution process of sediment supply for debris flow occurrence in the Longchi area of Dujiangyan City after the Wenchuan earthquake, Landslides, 12, 3, pp. 611-623, (2015); 
Chen, Hongxin, Mechanisms and runout characteristics of the rainfall-triggered debris flow in Xiaojiagou in Sichuan Province, China, Natural Hazards, 62, 3, pp. 1037-1057, (2012); 
Coussot, Philippe, Recognition, classification and mechanical description of debris flows, Earth-Science Reviews, 40, 3-4, pp. 209-227, (1996); 
Cruden, David M., A simple definition of a landslide, Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur, 43, 1, pp. 27-29, (1991); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Fan, Xuanmei, Spatio-temporal evolution of mass wasting after the 2008 Mw 7.9 Wenchuan earthquake revealed by a detailed multi-temporal inventory, Landslides, 15, 12, pp. 2325-2341, (2018); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018); 
Gan, Binrui, Temporal and Spatial Evolution of Vegetation Coverage in the Mianyuan River Basin Influenced by Strong Earthquake Disturbance, Scientific Reports, 9, 1, (2019); 
Godt, Jonathan W., Alpine debris flows triggered by a 28 July 1999 thunderstorm in the central Front Range, Colorado, Geomorphology, 84, 1-2, pp. 80-97, (2007)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, C., Wang, M., Chen, F., Coulthard, T.J., Wang, L.
AUTHOR FULL NAMES: Li, Congrong (56368110500); Wang, Ming (55732001400); Chen, Fang (57441279900); Coulthard, Tom J. (6602655122); Wang, Lei (57213182539)
56368110500; 55732001400; 57441279900; 6602655122; 57213182539
Integrating the SLIDE model within CAESAR-Lisflood: Modeling the ‘rainfall-landslide-flash flood’ disaster chain mechanism under landscape evolution in a mountainous area
(2023) Catena, 227, art. no. 107124, Cited 19 times.
DOI: 10.1016/j.catena.2023.107124
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151799939&doi=10.1016%2Fj.catena.2023.107124&partnerID=40&md5=e2441475a93ad5d48aaa2ad6b86ab39b

AFFILIATIONS: International Research Center of Big Data for Sustainable Development Goals, Beijing, Beijing, China; Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Beijing, China; School of National Safety and Emergency Management, Beijing Normal University, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; School of Environmental Sciences, University of Hull, Hull, East Yorkshire, United Kingdom
ABSTRACT: The interaction mechanism between the dynamically changing environment and the subsequent natural hazards in the years following an earthquake has been studied based on a multi-temporal remote sensing dataset and continually measured data. However, how to quantitatively model this interaction mechanism has not been fully addressed. In this study, we first modeled the interaction mechanism between the ‘rainfall-landslide-flash flood’ disaster chain and the dynamically changing environment in mountainous areas by incorporating the SLope-Infiltration-Distributed Equilibrium (SLIDE) model within the landscape evolution model (CAESAR-Lisflood) and then applied the integrated CAESAR-Lisflood model in a Wenchuan earthquake-stricken area. The results demonstrated that the landslide susceptibility under extreme rainfall can be predicted effectively based on the integrated CAESAR-Lisflood model and that new/enlarged landslides occur more easily in mountain valleys, near the valley outlet, and in the main steep gullies. Most of the high landslide susceptibility areas are not located in coseismic landslide areas with high vegetation recovery. The landslide legacy effects had a significant influence on the landscape erosion and deposition processes and a great effect on the spatial distribution pattern of the material redistribution in the basin, which in turn affected the subsequent disaster occurrence. The integrated CAESAR-Lisflood model compensates for the effect of the “rainfall-landslide-flash flood” disaster chain on the process of erosion and deposition, improves the model's applicability in earthquake-stricken areas, and provides scientific information for regional disaster management and reduction. © 2023 Elsevier B.V.
AUTHOR KEYWORDS: CAESAR-Lisflood model; Digital disaster reduction; Disaster chain; Mass movement; SLIDE model
INDEX KEYWORDS: disaster management; earthquake event; flash flood; landslide; mass movement; mountain region; rainfall; remote sensing; spatial distribution
REFERENCES: Beven, Keith J., A physically based, variable contributing area model of basin hydrology, Hydrological Sciences Bulletin, 24, 1, pp. 43-69, (1979); 
Chen, Fang, Res2-Unet, a New Deep Architecture for Building Detection from High Spatial Resolution Images, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15, pp. 1494-1501, (2022); 
Int J Sedim Res, (2020); 
Coulthard, Tom J., Integrating the LISFLOOD-FP 2D hydrodynamic model with the CAESAR model: Implications for modelling landscape evolution, Earth Surface Processes and Landforms, 38, 15, pp. 1897-1906, (2013); 
Coulthard, Tom J., Modeling long-term contamination in river systems from historical metal mining, Geology, 31, 5, pp. 451-454, (2003); 
Coulthard, Tom J., A cellular model of Holocene upland river basin and alluvial fan evolution, Earth Surface Processes and Landforms, 27, 3, pp. 269-288, (2002); 
Journal of Mountain Science, (2008); 
Dai, Fuchu, Landslide risk assessment and management: An overview, Engineering Geology, 64, 1, pp. 65-87, (2002); 
undefined, (1950); 
Ervine, D. Alan, TWO-DIMENSIONAL SOLUTION FOR STRAIGHT AND MEANDERING OVERBANK FLOWS, Journal of Hydraulic Engineering, 126, 9, pp. 653-669, (2000)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Dai, L., Fan, X., Wang, X., Fang, C., Zou, C., Tang, X., Wei, Z., Xia, M., Wang, D., Xu, Q.
AUTHOR FULL NAMES: Dai, Lanxin (57196005924); Fan, Xuanmei (12752112800); Wang, Xin (57202370573); Fang, Chengyong (57887775600); Zou, Chengbin (57221962637); Tang, Xiaochuan (57225883222); Wei, Zhenlei (56997958800); Xia, Mingyao (57191754187); Wang, Dan (57219131557); Xu, Qiang (56506033600)
57196005924; 12752112800; 57202370573; 57887775600; 57221962637; 57225883222; 56997958800; 57191754187; 57219131557; 56506033600
Coseismic landslides triggered by the 2022 Luding Ms6.8 earthquake, China
(2023) Landslides, 20 (6), pp. 1277 - 1292, Cited 56 times.
DOI: 10.1007/s10346-023-02061-3
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152795384&doi=10.1007%2Fs10346-023-02061-3&partnerID=40&md5=79a2f19a9c647e68a3f0d7cb8c0e78ac

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: On September 5, 2022, an Ms6.8 earthquake struck Luding County, Sichuan Province, China. Through creating a coseismic landslide prediction model, we obtained the spatial distribution of the triggered geological hazards immediately after the earthquake. Through collecting all available multi-source optical remote sensing images of the earthquake-affected area via UAV and satellite platforms, the exact information of coseismic landslide was achieved by pattern recognition and visual inspection. According to the current results, the Luding earthquake triggered 5336 landslides with a total area of 28.53km2. The spatial distribution of the coseismic landslides is correlated statistically to various seismic, terrain, and geological factors, to evaluate their susceptibility at regional scale and to identify the most typical characteristics of these failures. The results reveal that the coseismic landslides mainly occurred on the sides of the Xianshuihe fault (within 1.2 km) and Dadu River (within 0.5 km) in striped patterns. They are concentrated in the regions with an elevation range of 1000–1800 m, a slope range of 25–55°, and lithologies of acid plutonic rocks, mixed sedimentary rocks, and siliciclastic sedimentary rocks. Besides, the coseismic landslides of the Luding earthquake are smaller in size and shallower than those triggered by the 2008 Wenchuan earthquake and the 2017 Jiuzhaigou earthquake. Rapidly achieving the spatial locations and distribution patterns of the coseismic landslides enables to provide effective support and guidance to emergency rescue, risk mitigation, and reconstruction planning. © 2023, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Coseismic landslides; Interpretation; Luding earthquake; Prediction; Remote sensing; Spatial distribution
INDEX KEYWORDS: Forecasting; Landslides; Optical remote sensing; Pattern recognition; Sedimentary rocks; Sedimentology; Spatial distribution; Coseismic landslide; Geological hazards; Interpretation; Landslide prediction; Luding earthquake; Multi-Sources; Prediction modelling; Remote-sensing; Sichuan province; Earthquakes; coseismic process; earthquake magnitude; earthquake trigger; landslide; prediction; remote sensing; satellite altimetry; spatial distribution; China; Dadu River; Sichuan
REFERENCES: An, Yanru, Preliminary report of the September 5, 2022 MS 6.8 Luding earthquake, Sichuan, China, Earthquake Research Advances, 3, 1, (2023); 
Spatial Slip Rate Distribution Along the Se Xianshuihe Fault Eastern Tibet and Earthquake Hazard Assessment, (2021); 
Bai, Mingkun, Southeastward increase of the late Quaternary slip-rate of the Xianshuihe fault, eastern Tibet. Geodynamic and seismic hazard implications, Earth and Planetary Science Letters, 485, pp. 19-31, (2018); 
Bao, Han, Early and persistent supershear rupture of the 2018 magnitude 7.5 Palu earthquake, Nature Geoscience, 12, 3, pp. 200-205, (2019); 
Belgiu, Mariana, Random forest in remote sensing: A review of applications and future directions, ISPRS Journal of Photogrammetry and Remote Sensing, 114, pp. 24-31, (2016); 
Benediktsson, Jón Atli, Classification of hyperspectral data from urban areas based on extended morphological profiles, IEEE Transactions on Geoscience and Remote Sensing, 43, 3, pp. 480-491, (2005); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Budimir, M. E.A., Earthquake-and-landslide events are associated with more fatalities than earthquakes alone, Natural Hazards, 72, 2, pp. 895-914, (2014); 
Budimir, M. E.A., A systematic review of landslide probability mapping using logistic regression, Landslides, 12, 3, pp. 419-436, (2015); 
Chen, Guihua, Late Quaternary Slip-rates and Slip Partitioning on the Southeastern Xianshuihe Fault System, Eastern Tibetan Plateau, Acta Geologica Sinica (English Edition), 90, 2, pp. 537-554, (2016)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, M., Xiong, J., Chen, M., Tang, C.
AUTHOR FULL NAMES: Li, Mingwei (57222871091); Xiong, Jiang (57217517892); Chen, Ming (57199453005); Tang, Chuan (35932953300)
57222871091; 57217517892; 57199453005; 35932953300
Vegetation restoration and dynamic evolution analysis of landslide activity in the Wenchuan Earthquake area 汶川震区植被恢复与同震滑坡活动性动态演化分析
(2023) Hydrogeology and Engineering Geology, 50 (3), pp. 182 - 192, Cited 3 times.
DOI: 10.16030/j.cnki.issn.1000-3665.202209049
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85163527676&doi=10.16030%2Fj.cnki.issn.1000-3665.202209049&partnerID=40&md5=575847066f7152babf13ec03a41e1658

AFFILIATIONS: Institute of Geophysical and Geochemical Exploration Langfang, Langfang, Hebei, China; National Research Center of Geo-Exploration Technology, Langfang, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chengdu University of Technology, Chengdu, China
ABSTRACT: A great mountain seismic often triggers a large number of co-seismic landslides, causing direct damage to local vegetation cover and growth. As an important indicator of landslide activity intensity, the vegetation recovery is of great significance for the activity of post-earthquake geo-hazards. However, due to the limitation of observational data, the current research on vegetation restoration process in earthquake areas is mostly on a small scale. In addition, there is insufficient understanding of the vegetation evolution mechanism in a large area and the relationship between vegetation and the activity of geological disasters. Therefore, this paper uses multi-temporal and long-time series (2000−2020) high-precision remote sensing images to study the vegetation restoration process in the Wenchuan earthquake area. By calculating vegetation recovery rates in different periods, we explore the universal law of vegetation restoration in a large range, and analyze the relationship between vegetation restoration and the change of landslide activity intensity. The results show that by 2020, 71.34% of the landslide area in the earthquake area has been better restored. The proportions of highly active, moderately active, low active and basically stable landslides are 17.6%, 12.4%, 17.7% and 52.3%, respectively. The surface recovery trend of coseismic landslide indicates that the vegetation in the Wenchuan earthquake area is expected to recover to the preearthquake average level about 17 years after the earthquake. However, the process of vegetation recovery and changes in landslide activity are often subject to the combined effects of multiple factors. Although the vegetation recovery of landslide surface reflects the decline of landslide activity after the earthquake to some extent, the effects of the earthquake on landslide activity will last longer than the recovery of surface vegetation to the preearthquake level. Referring to the results of previous studies, this paper suggests that the post-earthquake landslide activity will last 25 years or more.The conclusion can provide reference for the assessment and prevention of post earthquake geological disasters in Wenchuan earthquake area. © 2023 HYDROGEOLOGY & ENGINEERING GEOLOGY. All rights reserved.
AUTHOR KEYWORDS: co-seismic landslide; landslide activity; vegetation restoration; Wenchuan earthquake
REFERENCES: Wang, Tao, Seismic landslide hazard assessment of China and its impact on national territory spatial planning, Geology in China, 48, 1, pp. 21-39, (2021); 
Tie, Yongbo, Characteristics of geological hazards and it’s mitigations of the Ms6.8 earthquake in Luding County, Sichuan Province, Hydrogeology and Engineering Geology, 49, 6, pp. 1-12, (2022); 
Bai, Yongjian, ADVANCES IN RESEARCH ON THE GEOHAZARD EFFECT OF ACTIVE FAULTS ON THE SOUTHEASTERN MARGIN OF THE TIBETAN PLATEAU, Journal of Geomechanics, 25, 6, pp. 1116-1128, (2019); 
Zhang, Jiajia, Features of secondary mountain hazards triggered by the 2013 Lushan Earthquake, Sichuan Province, Geological Bulletin of China, 34, 5, pp. 898-907, (2015); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Tang, Chuan, Field investigation and research on giant debris flow on August 14, 2010 in Yingxiu town, epicenter of Wenchuan earthquake, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36, 1, pp. 172-180, (2011); 
Li, Mingwei, Spatio-temporal evolution characteristics of landslides in debris flow catchment in Beichuan County in the Wenchuan earthquake zone, Hydrogeology and Engineering Geology, 47, 3, pp. 182-190, (2020); 
Hydrogeology Engineering Geology, (2018); 
Wang, Dongwei, The river blockage characteristics of “8·20” large-scale debris flow and the hazard prediction in Banzi gully in Miansi Town，Wenchuan County, Chinese Journal of Geological Hazard and Control, 33, 1, pp. 58-66, (2022); 
Shen, Ping, Declining geohazard activity with vegetation recovery during first ten years after the 2008 Wenchuan earthquake, Geomorphology, 352, (2020)
PUBLISHER: Editorial Office of Hydrogeology and Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, Y., Liu, J., Jiang, Y., Bao, Y.
AUTHOR FULL NAMES: Hu, Yunhua (56079809600); Liu, Jingjing (58476846400); Jiang, Yi (58476158500); Bao, Yuhai (57214924430)
56079809600; 58476846400; 58476158500; 57214924430
Remote sensing analysis of temporal and spatial evolution trend of loose material sources in meizoseismal area, Baisha River Basin, Dujiangyan, China
(2023) Science of Soil and Water Conservation, 21 (2), pp. 57 - 63, Cited 0 times.
DOI: 10.16843/j.sswc.2023.02.008
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85164121377&doi=10.16843%2Fj.sswc.2023.02.008&partnerID=40&md5=5c2328de791527da08ce393a4c1acd8d

AFFILIATIONS: Sichuan Third Surveying and Mapping Engineering Institute, Chengdu, Sichuan, China; Chengdu Water Affairs Technical Center, Chengdu, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: [Background] Baisha River Basin is the main drinking water source in the main urban area of Chengdu. The “5’12” Wenchuan earthquake led to the accumulation of a large number of collapse and landslide debris on the steep slopes, resulting in serious soil and water loss during rainstorm, which has a serious impact on the water supply of the water source. The investigation and change trend analysis of loose material sources in the basin have important guiding significance for the comprehensive control of soil and water loss in the basin. [Methods] Four periods of high-resolution remote sensing images one year before the earthquake and 10 years after the earthquake were selected. The loose material source was extracted by using object-oriented remote sensing automatic interpretation combined with human-computer interaction. The spatial distribution and dynamic change characteristics of material source were analyzed by GIS spatial analysis method. [Results] Before the “5 ’12” Wenchuan earthquake in 2008, the loose material sources area of the basin was only 20. 05 km2, accounting for 5. 57% of the total area of the basin. The “5 • 12 ” Wenchuan earthquake caused a large number of new loose material sources in the basin, with a total area of 106. 31 km2, accounting for 29. 52% of the total area of the basin. At 10 years after the earthquake, the total material source area decreased by 66. 95 km2. There are still a few new sources in the basin after the earthquake, and the new sources in the 5 years after the earthquake are mainly distributed in the lower reaches of the basin due to human activities such as post disaster recovery and reconstruction, river dredging and mining. At 5 - 10 years after the earthquake, the newly added sources decreased, which was mainly caused by the expansion of the source range of some slopes in the upper reaches of the basin or the newly added collapse and landslide sources. The earthquake caused the average source center of the basin to move about 6. 7 km downstream as a whole, and the average source center gradually moved back at 10 years after the earthquake. [Conclusions] Although the ecological restoration of the basin is obvious, there is still a certain gap from that before the earthquake. The material sources in the three directions of southwest by west, northwest by west and northwest by north of the upstream are still in an unstable state, which is the area to be treated in the next step. © 2023, Editorial Board of Science of Soil and Water Conservation. All rights reserved.
AUTHOR KEYWORDS: GIS spatial analysis; loose material sources; meizoseismal area; object oriented classification; trend analysis; water source
REFERENCES: Chinese Journal of Geological Hazard and Control, (2018); 
Yangtze River, (2016); 
Wang, Xiekang, Study on Division Early Warning of Flash Flood Disaster Caused by Rainstorm in Mountainous Small Watersheds, Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences, 53, 1, pp. 29-38, (2021); 
Chinese Journal of Geological Hazard and Control, (2012); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Science of Soil and Water Conservation, (2015); 
Mountain Research, (2019); 
Xia, Bing, Spatial distribution characteristics and analysis of soil erosion under earthquake effect: A case study of Jiuzhaigou earthquake, Science of Soil and Water Conservation, 18, 1, pp. 79-89, (2020); 
Remote Sensing for Land Resources, (2007); 
Journal of Engineering Geology, (2010)
PUBLISHER: Editorial Board of Science of Soil and Water Conservation
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Long, Y., Li, W., Huang, R., Xu, Q., Yu, B., Liu, G.
AUTHOR FULL NAMES: Long, Yujie (57218843448); Li, Weile (25936551300); Huang, Runqiu (55835407700); Xu, Qiang (56506033600); Yu, Bin (37058094800); Liu, Gang (56926969400)
57218843448; 25936551300; 55835407700; 56506033600; 37058094800; 56926969400
A Comparative Study of Supervised Classification Methods for Investigating Landslide Evolution in the Mianyuan River Basin, China
(2023) Journal of Earth Science, 34 (2), pp. 316 - 329, Cited 26 times.
DOI: 10.1007/s12583-021-1525-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159953229&doi=10.1007%2Fs12583-021-1525-9&partnerID=40&md5=a85082cebc97f9b80165f08f806e3025

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Ltd., Chengdu, Sichuan, China; College of Earth Sciences, Chengdu University of Technology, Chengdu, China
ABSTRACT: The M <inf>s</inf> 8.0 Wenchuan earthquake of 2008 dramatically changed the terrain surface and caused long-term increases in the scale and frequency of landslides and debris flows. The changing trend of landslides in the earthquake-affected area over the decade since the earthquake remains largely unknown. In this study, we were able to address this issue using supervised classification methods and multitemporal remote sensing images to study landslide evolution in the worst-affected area (Mianyuan River Basin) over a period of ten years. Satellite images were processed using the maximum likelihood method and random forest algorithm to automatically map landslide occurrence from 2007 to 2018. The principal findings are as follows: (1) when compared with visual image analysis, the random forest algorithm had a good average accuracy rate of 87% for landslide identification; (2) postevent landslide occurrence has generally decreased with time, but heavy monsoonal seasons have caused temporary spikes in activity; and (3) the postearthquake landslide activity in the Mianyuan River Basin can be divided into a strong activity period (2008 to 2011), medium activity period (2012 to 2016), and weak activity period (post 2017). Landslide activity remains above the prequake level, with damaging events being rare but continuing to occur. Long-term remote sensing and on-site monitoring are required to understand the evolution of landslide activity after strong earthquakes. © 2023, China University of Geosciences (Wuhan) and Springer-Verlag GmbH Germany, Part of Springer Nature.
AUTHOR KEYWORDS: automatic detection; engineering geology; evolutionary trend; maximum likelihood method; Mianyuan River Basin; random forest algorithm; Wenchuan earthquake
INDEX KEYWORDS: automation; comparative study; engineering geology; landslide; maximum likelihood analysis; monsoon; remote sensing; river basin; Sichuan earthquake 2008; supervised classification; China
REFERENCES: Blaschke, Thomas, Object based image analysis for remote sensing, ISPRS Journal of Photogrammetry and Remote Sensing, 65, 1, pp. 2-16, (2010); 
Breiman, Leo, Random forests, Machine Learning, 45, 1, pp. 5-32, (2001); 
Chen, Hongey, Relationship between earthquake disturbance, tropical rainstorms and debris movement: An overview from Taiwan, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 161-186, (2009); 
Chen, Weitao, Forested landslide detection using LiDAR data and the random forest algorithm: A case study of the Three Gorges, China, Remote Sensing of Environment, 152, pp. 291-301, (2014); 
Chen, Xiaoqing, Mountain hazard induced by Wenchuan Earthquake and its long-term development trends of Ganxi Gully, Beichuan, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, SUPPL. 1, pp. 22-32, (2010); 
Chen, Zhong, Automated landslides detection for mountain cities using multi-temporal remote sensing imagery, Sensors, 18, 3, (2018); 
Intensity Distribution Map of Wenchuan M S 8 0 Earthquake 2008 9 1, (2008); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Dou, Jie, Automatic case-based reasoning approach for landslide detection: Integration of object-oriented image analysis and a genetic algorithm, Remote Sensing, 7, 4, pp. 4318-4342, (2015)
PUBLISHER: China University of Geosciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Deng, Y., Deng, Y.
AUTHOR FULL NAMES: Deng, Yang (57963817900); Deng, Yunkai (8984596000)
57963817900; 8984596000
Two-Step Matching Approach to Obtain More Control Points for SIFT-like Very-High-Resolution SAR Image Registration
(2023) Sensors, 23 (7), art. no. 3739, Cited 4 times.
DOI: 10.3390/s23073739
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152351150&doi=10.3390%2Fs23073739&partnerID=40&md5=86c197d6fb8e1323efa8c19d9cf55ce0

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Airborne VHR SAR image registration is a challenging task. The number of CPs is a key factor for complex CP-based image registration. This paper presents a two-step matching approach to obtain more CPs for VHR SAR image registration. In the past decade, SIFT and other modifications have been widely used for remote sensing image registration. By incorporating feature point location affine transformation, a two-step matching scheme, which includes global and local matching, is proposed to allow for the determination of a much larger number of CPs. The proposed approach was validated by 0.5 m resolution C-band airborne SAR data acquired in Sichuan after the 2008 Wenchuan earthquake via a SAR system designed by the IECAS. With the proposed matching scheme, even the original SIFT, which is widely known to be unsuitable for SAR images, can achieve a much larger number of high-quality CPs than the one-step SIFT–OCT, which is tailored for SAR images. Compared with the classic one-step matching approach using both the SIFT and SITF–OCT algorithms, the proposed approach can obtain a larger number of CPs with improved precision. © 2023 by the authors.
AUTHOR KEYWORDS: CPs; SITF-OCT; VHR SAR image
INDEX KEYWORDS: Earthquakes; Image registration; Radar imaging; Remote sensing; Control point; CP; High-resolution SAR; Images registration; Matching scheme; Matchings; SAR Images; SITF-OCT; Very high resolution; VHR SAR image; Synthetic aperture radar; affine transform; article; earthquake; image registration; remote sensing
REFERENCES: Singha, Suman, Multi-frequency and multi-polarization analysis of oil slicks using TerraSAR-X and RADARSAT-2 data, International Geoscience and Remote Sensing Symposium (IGARSS), 2016-November, pp. 4035-4038, (2016); 
Cui, Zongyong, Ship Detection in Large-Scale SAR Images Via Spatial Shuffle-Group Enhance Attention, IEEE Transactions on Geoscience and Remote Sensing, 59, 1, pp. 379-391, (2021); 
J Remote Sens, (2019); 
Kang, Shuai, The 2020 MS6.4 Earthquake in Yutian Xinjiang Based on the Ascending and Descending Sentinel-1 SAR Data, Earthquake, 41, 2, pp. 80-91, (2021); 
J Wuhan Univ Inf Sci Ed, (2019); 
Zhu, Mao, InSAR deformation data decomposition and information analysis of Jiaozhou bay bridge, Qingdao, National Remote Sensing Bulletin, 24, 7, pp. 883-893, (2020); 
Li, Xiang, Building Detection in SAR Images Based on Bi-Dimensional Empirical Mode Decomposition Algorithm, IEEE Geoscience and Remote Sensing Letters, 17, 4, pp. 641-645, (2020); 
High Resolution SAR Urban Building Target Detection Algorithm, (2020); 
Zhang, Lei, Minimizing Height Effects in MTInSAR for Deformation Detection over Built Areas, IEEE Transactions on Geoscience and Remote Sensing, 57, 11, pp. 9167-9176, (2019); 
Kang, Xueyan, Measurement of Yangtze River's Water Level by Tiangong-2 Interferometric Imaging Radar Altimeter, Progress in Electromagnetics Research Symposium, 2019-June, pp. 3388-3392, (2019)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Xiong, J., Chen, H., Zeng, L., Su, F.-H., Gong, L., Tang, C.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Chen, Huayong (24385415200); Zeng, Lu (59049447300); Su, Fenghuan (14033176000); Gong, Lingfeng (57215612725); Tang, Chenxiao (55486336700)
57217517892; 24385415200; 59049447300; 14033176000; 57215612725; 55486336700
Coseismic landslide sediment increased by the “9.5” Luding earthquake, Sichuan, China
(2023) Journal of Mountain Science, 20 (3), pp. 624 - 636, Cited 18 times.
DOI: 10.1007/s11629-022-7770-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149762938&doi=10.1007%2Fs11629-022-7770-2&partnerID=40&md5=1418bfeee03101ab9958faabe2714943

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; China Geological Survey, Beijing, Beijing, China
ABSTRACT: The “9.5” Luding earthquake (Ms 6.8), which occurred on September 5, 2022, has triggered thousands of landslides, and caused coseismic landslide sediment in the mountain basin to increase significantly. After the Luding earthquake, landslide sediment may continue to divert to channels, and increase the activity of debris flows. Importantly, the formation of debris flows can pose a major threat to infrastructure, lives and property. To better understand the landslide sediment that increased by the “9.5” Luding earthquake and its impact on the activity of debris flows, we mapped the coseismic landslide database using satellite images. A total of 9142 landslides with an area of 49.51 km2, covering 4.81% of the whole basin, were triggered by the Luding earthquake. The coseismic landslides induced by this earthquake are dominated by shallow landslides and are densely distributed in the combined zone of the Xianshuihe fault and the Dadu fault. Approximately 333.31×106 m3 (error: 111.43×106 m3/−70.73×106 m3) of coseismic landslide sediments were induced by the earthquake in the epicenter, and the landslide materials were concentrated downstream of the basins. In addition, more than 13986.45×104 m3 (error: 4675.67×104 m3/−2967.92×104 m3) of landslide sediment may supply for debris flow occurrence. Simultaneously, the small basins that are distributed near Moxi, Detuo and the junction of the Xianshuihe fault and Daduhe fault are more susceptible to debris flows when rainstorms hit these regions. Therefore, prevention and mitigation measures, early warning, and land use planning should be adopted in advance in these regions. However, from the perspectives of landslide scale and the degree of landslide-channel coupling, the activity or active intensity of debris flows in the Luding earthquake area may be lower than that in the epicenter area of the 2008 Wenchuan earthquake. © 2023, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Debris flow activity; Landslide sediment; Luding earthquake; Remote sensing image
INDEX KEYWORDS: coseismic process; debris flow; earthquake event; earthquake magnitude; landslide; satellite imagery; China; Luding; Sichuan
REFERENCES: Egu General Assembly Conference Egu General Assembly Conference Abstracts, (2013); 
Bracken, Louise J., Sediment connectivity: A framework for understanding sediment transfer at multiple scales, Earth Surface Processes and Landforms, 40, 2, pp. 177-188, (2015); 
Chang, Ming, The spatial distribution characteristics of coseismic landslides triggered by the Ms7.0 Lushan earthquake and Ms7.0 Jiuzhaigou earthquake in southwest China, Environmental Science and Pollution Research, 28, 16, pp. 20549-20569, (2021); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dai, Fuchu, The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China, Geomorphology, 65, 3-4, pp. 205-221, (2005); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009); 
Fuller, Ian C., Landslide-driven erosion and slope-channel coupling in steep, forested terrain, Ruahine Ranges, New Zealand, 1946-2011, Catena, 142, pp. 252-268, (2016)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, S., Di, B., Ustin, S.L., Wong, M.S., Adhikari, B.R., Zhang, R., Luo, M.
AUTHOR FULL NAMES: Wu, Shaolin (57215536172); Di, Baofeng (14057800700); Ustin, Susan L. (35570142700); Wong, Man Sing (57210337677); Adhikari, Basanta Raj (36605801800); Zhang, Ruixing (57204142808); Luo, Maoting (58072009200)
57215536172; 14057800700; 35570142700; 57210337677; 36605801800; 57204142808; 58072009200
Dynamic Characteristics of Vegetation Change Based on Reconstructed Heterogenous NDVI in Seismic Regions
(2023) Remote Sensing, 15 (2), art. no. 299, Cited 6 times.
DOI: 10.3390/rs15020299
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146554829&doi=10.3390%2Frs15020299&partnerID=40&md5=c6d333415dfd19a78cbc620021a3090a

AFFILIATIONS: College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China; Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, Hong Kong; Institute for Disaster Management and Reconstruction, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, Hong Kong; Institute of the Environment, University of California, Davis, Davis, CA, United States; Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, Hong Kong; Department of Civil Engineering, Tribhuvan University, Kathmandu, Nepal
ABSTRACT: The need to protect forests and enhance the capacity of mountain ecosystems is highlighted in the U.N.’s Sustainable Development Goal (SDG) 15. The worst-hit areas of the 2008 Wenchuan Earthquake in southwest China were mountainous regions with high biodiversity and the impacted area is typical of other montane regions, with the need for detecting vegetation changes following the impacts of catastrophes. While the widely used remotely sensed vegetation indicator NDVI is available from various satellite data sources, these satellites are available for different monitoring periods and durations. Combining these datasets proved challenging to make a continuous characterization of vegetation change over an extended time period. In this study, compared with linear regression, multiple linear regression, and random forest, Convolutional Neural Networks (CNNs) performed best with an average R2 of 0.819 (leave-one-out cross-validation). Thus, the CNNs model was selected to establish the map of the overlapping periods of two remote-sensing products: SPOT-VGT NDVI and PROBA-V NDVI, to reconstruct a SPOT-VGT NDVI for the period from June 2014 to December 2018 in the worst-hit areas of the Wenchuan earthquake. We analyzed the original and reconstructed SPOT-VGT NDVI in the hard-hit areas of the Wenchuan earthquake from 1999 to 2018, and we concluded that NDVI showed an overall upward trend throughout the study period, but experienced a sharp decline in 2008 and reached its lowest value a year later (2009). Vegetation recovery was rapid from 2009 until 2011 after which, it returned to a pattern of slower natural growth (2012–2018). The Longmenshan fault zone experienced the greatest vegetation damage and initiation of recovery there has caused the overall regional average recovery to lag by 1–2 years. In areas where the land was denuded of vegetation (i.e., effectively all vegetation was stripped from the surface) after the earthquake, the damage exceeded what was experienced anywhere else in the entire study area, and by 2018 it remained unrestored. In the 15 years since the earthquake, the areas that were denuded were expected to recover to the level of restoration equivalent with the NDVI of 2007, as was the case in other earthquake-damaged regions. In addition to the earthquake and the immediate loss of vegetation, the Chinese government’s Grain for Green Policy, the elevation ranges within the region, the forest’s phenological conditions, and human activities all had an impact on vegetation recovery and restoration. The reconstructed NDVI provides a long-term continuous record, which contributes to the identifying changes that are improving predictive forest recovery models and to better vegetation management following catastrophic disturbances, such as earthquakes. © 2023 by the authors.
AUTHOR KEYWORDS: landslides; NDVI reconstruction; vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: Biodiversity; Disasters; Ecosystems; Forestry; Linear regression; Recovery; Remote sensing; Restoration; Vegetation; 2008 wenchuan earthquakes; Convolutional neural network; Dynamics characteristic; Mountain ecosystems; NDVI reconstruction; Seismic regions; SPOT VGT; Vegetation change; Vegetation recovery; Wenchuan Earthquake; Earthquakes
REFERENCES: Duan, Yanan, Changes in ecosystem services in a montane landscape impacted by major earthquakes: A case study in Wenchuan earthquake-affected area, China, Ecological Indicators, 126, (2021); 
Marusig, Daniel, Correlation of field-measured and remotely sensed plant water status as a tool to monitor the risk of drought-induced forest decline, Forests, 11, 1, (2020); 
Poussin, Charlotte, Drying conditions in Switzerland–indication from a 35-year Landsat time-series analysis of vegetation water content estimates to support SDGs, Big Earth Data, 5, 4, pp. 445-475, (2021); 
Xu, Chong, Revisions of the M 8.0 Wenchuan earthquake seismic intensity map based on co-seismic landslide abundance, Natural Hazards, 69, 3, pp. 1459-1476, (2013); 
Xu, Jiuping, Meta-synthesis pattern of post-disaster recovery and reconstruction: Based on actual investigation on 2008 Wenchuan earthquake, Natural Hazards, 60, 2, pp. 199-222, (2012); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Lu, Tao, Reconstruction of the Wenchuan earthquake-damaged ecosystems: Four important questions, Chinese Journal of Applied and Environmental Biology, 16, 3, pp. 301-304, (2010); 
Acta Ecologica Sinica, (2004); 
Fan, Xuanmei, Spatio-temporal evolution of mass wasting after the 2008 Mw 7.9 Wenchuan earthquake revealed by a detailed multi-temporal inventory, Landslides, 15, 12, pp. 2325-2341, (2018); 
Wang, Ming, Diagnosis of vegetation recovery in mountainous regions after the wenchuan earthquake, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7, 7, pp. 3029-3037, (2014)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Luo, G., Chen, X., Zhang, Q., He, K., Wu, M., Shen, W., Liu, B.
AUTHOR FULL NAMES: Luo, Gang (35275305400); Chen, Xi'nan (57873631400); Zhang, Qian (57874553500); He, Kun (57470523000); Wu, Maolin (57402480700); Shen, Weigang (57194563301); Liu, Bo (57212007036)
35275305400; 57873631400; 57874553500; 57470523000; 57402480700; 57194563301; 57212007036
Failure mechanism and sedimentary characteristics of a catastrophic rockslide avalanche induced by the 2008 Wenchuan earthquake
(2023) Landslides, 20 (1), pp. 25 - 38, Cited 12 times.
DOI: 10.1007/s10346-022-01955-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137246958&doi=10.1007%2Fs10346-022-01955-y&partnerID=40&md5=5e36bed90a81a9e3837480c9208827ba

AFFILIATIONS: Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
ABSTRACT: The infrastructure construction in tectonically active mountainous areas is faced with the threat of earthquake-induced rockslide-avalanches. We took the Woqian rockslide-avalanche induced by the Wenchuan earthquake near the Qinchuan active fault, Southwestern China as an instance to elucidate a unique initiation mechanism of the inward inclined bedding slope, which had a characteristic of twice destabilization in succession. The high-resolution satellite images, UAV aerial photography, field investigation, and numerical simulation were conducted to reveal the failure processes. The results suggested that (1) the long-term headward erosion of the gully runoff had locally exposed the unconformity contact plane within the strata, which evolved as a part of the sliding plane; (2) the seismic loading produced a rapid shear strain increment on the unconformity plane; (3) the brittle rupture occurred along the sliding plane at the bottom of the sliding source I developed at 6 s after the seismic wave arrival; (4) as a “resistance barrier”, the sliding source I first collapsed and most of it accumulated at a short distance; (5) the sliding source II subsequently slid along the apparent dip of the bedding plane and then entrained the deposits of the source I into a catastrophic rock avalanche. The failure mechanism of such carbonaceous bedding slopes with similar geological conditions could provide an insight into the early risk recognition of potential rockslides and the safe site selection of infrastructures. © 2022, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Carbonate rock; Earthquake-induced rockslide; Failure mechanism; Finite difference method; Rockslide-avalanche
INDEX KEYWORDS: Aerial photography; Antennas; Compression testing; Finite difference method; Sedimentary rocks; Shear strain; Site selection; 2008 wenchuan earthquakes; Bedding slope; Carbonate rock; Earthquake-induced rockslide; Failure mechanism; Finite-difference methods; Infrastructure construction; Rockslide-avalanche; Sedimentary characteristics; Sliding planes; Earthquakes; aerial photography; carbonate rock; catastrophic event; earthquake event; failure mechanism; finite difference method; rock avalanche; satellite imagery; seismic wave; China; Sichuan; Wenchuan
REFERENCES: Chang, Ming, The spatial distribution characteristics of coseismic landslides triggered by the Ms7.0 Lushan earthquake and Ms7.0 Jiuzhaigou earthquake in southwest China, Environmental Science and Pollution Research, 28, 16, pp. 20549-20569, (2021); 
Chang, Wenbin, Dynamic process analysis of the Xinmo landslide via seismic signal and numerical simulation, Landslides, 19, 6, pp. 1463-1478, (2022); 
Cui, Shenghua, Liquefaction within a bedding fault: Understanding the initiation and movement of the Daguangbao landslide triggered by the 2008 Wenchuan Earthquake (Ms = 8.0), Engineering Geology, 295, (2021); 
Dai, Fuchu, Rock avalanches triggered by oblique-thrusting during the 12 May 2008 Ms 8.0 Wenchuan earthquake, China, Geomorphology, 132, 3-4, pp. 300-318, (2011); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Gombert, Baptiste, Impulsive Source of the 2017 MW=7.3 Ezgeleh, Iran, Earthquake, Geophysical Research Letters, 46, 10, pp. 5207-5216, (2019); 
Gong, Bin, Study of PLSR-BP model for stability assessment of loess slope based on particle swarm optimization, Scientific Reports, 11, 1, (2021); 
Gong, Bin, Slope-slide simulation with discontinuous deformation and displacement analysis, International Journal of Geomechanics, 17, 5, (2017); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
He, Kun, Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China, Natural Hazards, 106, 3, pp. 2575-2597, (2021)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, S., Fu, G., Cheng, X.
AUTHOR FULL NAMES: Tian, Shujun (36609420200); Fu, Guoxun (59898283100); Cheng, Xiaosong (59136016600)
36609420200; 59898283100; 59136016600
Reactivation and Deformation Characteristics of Co-seismic Landslide by Wenchuan Earthquake 汶川大地震同震滑坡复活变形特征研究
(2023) Journal of Catastrophology, 38 (1), pp. 50 - 56, Cited 0 times.
DOI: 10.3969/j.issn.1000-811X.2023.01.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105005178348&doi=10.3969%2Fj.issn.1000-811X.2023.01.009&partnerID=40&md5=b078526d41a16275ceb580c9e34fee2c

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China
ABSTRACT: Reactivation of co-seismic landslides is characterized by uncertainty, concealment and wide area of regional distribution, which is often overlooked and easily becomes a blind area for disaster prevention and mitigation. This paper classifies The types of reactivation of co-seismic landslides are classified as slope toe erosiontype and slope surface rainfall type according to the location of the deposit where the deformation of co-seismic landslides is reactivated and the main triggering factors. Based on InSAR technology, UAV multi-phase aerial photography and ground survey data, the deformation characteristics, process and causes of the landslide in Qinglingou and Shabacun are analysed respectively. The toe of slope type mainly deforms and reactivates in the mode of "gully erosion - slope slip - slope retreat" ; the surface of slope type is deformed and reactivated in the mode of "particle transport - infiltration enhancement - particle coarsening - slip surface development". The application of InSAR technology to the monitoring of large - scale and long-time series deformation of co-seismic landslides is not only an effective means for the study of deformation and reactivation of co-seismic landslides, but also of great significance for the evaluation, prediction and prevention of geological hazards. © 2023 Shaanxi Earthquake Agency. All rights reserved.
AUTHOR KEYWORDS: co-seismic landslide; deformation characteristics; InSAR; reactivation mode; Wenchuan earthquake
REFERENCES: Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011); 
Zebker, Howard A., On the derivation of coseismic displacement fields using differential radar interferometry: the Landers earthquake, Journal of Geophysical Research, 99, B10, pp. 19-634, (1994); 
Ferretti, Alessandro, Nonlinear subsidence rate estimation using permanent scatterers in differential SAR interferometry, IEEE Transactions on Geoscience and Remote Sensing, 38, 5 I, pp. 2202-2212, (2000); 
Ferretti, Alessandro, Permanent Scatterers in SAR interferometry, Proceedings of SPIE - The International Society for Optical Engineering, 3869, pp. 139-145, (1999); 
Berardino, Paolo, A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms, IEEE Transactions on Geoscience and Remote Sensing, 40, 11, pp. 2375-2383, (2002)
PUBLISHER: Shaanxi Earthquake Agency
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Song, D.-M., Wang, H., Shan, X.-J., Wang, B., Cui, J.-Y.
AUTHOR FULL NAMES: Song, Dongmei (56427407300); Wang, Hui (59294134700); Shan, Xianjian (7101712284); Wang, Bin (57204241476); Cui, Jianyong (56814102700)
56427407300; 59294134700; 7101712284; 57204241476; 56814102700
A NOVEL EXTRACTION METHOD OF PRE-EARTHQUAKE GRACE GRAVITY ANOMALY INFORMATION BASED ON MAXIMUM SHEAR STRAIN 基于最大切应变的震前ＧＲＡＣＥ重力异常信息提取方法
(2022) Dizhen Dizhi, 44 (6), pp. 1539 - 1556, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2022.06.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153347617&doi=10.3969%2Fj.issn.0253-4967.2022.06.011&partnerID=40&md5=9d8d29130483c9befef65ecbf1a6cbf9

AFFILIATIONS: College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao, Shandong, China; Graduate School, China University of Petroleum (East China), Qingdao, Shandong, China; Institute of Geology, China Earthquake Administration, Beijing, China
ABSTRACT: The occurrence of earthquakes is closely related to the crustal tectonic movement and the migration of earth mass, which consequently cause the changes of the earth' s gravitational field. Global time-varying gravity field data obtained by GRACE gravity satellite can be used to detect pre-seismic gravity anomalies. For example, gravity signals caused by several large earthquakes, such as the 2005 M<inf>w</inf>8. 6 Indonesia earthquake, the 2010 M<inf>w</inf>8. 8 Chile earthquake and the 2011 Mw9.0 Japan earthquake, have been successfully extracted using GRACE data. However, previous studies on GRACE satellite-based seismic gravity changes focused more on the dynamics of the co-seismic gravity field than on the pre-seismic gravity anomalies which are of great significance for the early warning of earthquakes. Moreover, the commonly adopted difference disposal of the gravity field with the gravity field of adjacent months or the average gravity field of many years when obtaining gravity anomalies cannot effectively remove the inherent north-south stripe noise in GRACE data. On the contrary, it is more likely to cause the annihilation of the medium-high order information in GRACE gravity field model, which results in the loss of some gravity information related to tectonic activities. To explore the pre-seismic gravity anomalies in a more refined way, this study proposes a method of characterizing gravity variation based on the maximum shear strain of gravity, inspired by the concept of crustal strain. In other words, the gravity strain tensor is obtained by further calculating the second-order gradient of the increment of disturbance potential after the removal of hydrological disturbance, and then the maximum shear strain of gravity is ultimately generated to characterize the pre-earthquake tectonic activities. Then, to better understand the seismogenic process of the fault zone by further extracting the pre-earthquake anomalous changes, the data of the maximum shear strain time series are analyzed in this study by means of the offset index K to describe the gravity anomaly. Because the maximum shear strain is calculated by the second-order gradient of GRACE gravity field, this method can suppress the stripe noise better than the difference disposal, thus effectively improving the sensitivity of gravity anomaly detection. The exploratory experiments are carried out in the Tibetan plateau and its surrounding area, which locates among the Pacific Ocean, the Indian Ocean and Eurasia, with the highest altitude, most complex topography and frequent strong earthquakes. Ultimately, the Wenchuan earthquake and Nepal earthquake were used as an example to complete the extraction of pre-earthquake gravity anomaly information by the above method, and the pre-earthquake tectonic activity of the fault zones was analyzed. The results show that a large area of gravity anomalies consistent with the spatial distribution of the fault zone appeared on the Longmenshan fault zone during the half a year before the earthquake, and the maximum anomalous value appeared within 50km from the epicenter, while no anomalies appeared during the non-earthquake period. In addition, compared with the traditional methods, the proposed method has a better ability to extract anomaly information of gravity field, which provides a new idea for understanding the dynamic mechanism of large earthquakes using GRACE data. © 2022 State Seismology Administration. All rights reserved.
AUTHOR KEYWORDS: GRACE gravity satellite; maximum shear strain; Nepal earthquake; pre-earthquake gravity anomaly; Wenchuan earthquake
INDEX KEYWORDS: Anomaly detection; Data mining; Geodetic satellites; Gravitation; Shear strain; Tectonics; Fault zone; GRACE gravity satellite; Gravity anomalies; Gravity field; Maximum shear strain; Maximum shears; Nepal earthquake; Pre-earthquake gravity anomaly; Tectonic activity; Wenchuan Earthquake; Earthquakes; crustal movement; earthquake event; extraction method; GRACE; gravity anomaly; gravity field; information; satellite altimetry; seismic migration; seismic noise; shear strain; spatial distribution; topography; Chile; China; Eurasia; Indian Ocean; Longmenshan Fault Zone; Nepal; Pacific Ocean; Sichuan
REFERENCES: Ding, Yihang, Determination of vertical surface displacements in Sichuan using GPS and GRACE measurements, Acta Geophysica Sinica, 61, 12, pp. 4777-4788, (2018); 
Fan, Yida, Research progress of disaster remote sensing in China, National Remote Sensing Bulletin, 20, 5, pp. 1170-1184, (2016); 
Progress in Geophysics, (2018); 
Theories and Methods of Spatio Temporal Outliers Detection, (2009); 
Chinese Science Bulletin, (1998); 
South China Journal of Seismology, (2021); 
Peng, Ling, Earthquake-induced landslide recognition using high-resolution remote sensing images, National Remote Sensing Bulletin, 21, 4, pp. 509-518, (2017); 
Shan, Xianjian, The vertical coseismic deformation field of the Wenchuan earthquake based on the combination of gps and insar measurements, Dizhen Dizhi, 36, 3, pp. 718-730, (2014); 
Plateau Earthquake Research, (2018); 
Physical Modeling of the Longmenshan Fold and Thrust Belt D, (2017)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, X., Ma, X., Huang, M., Guo, Y., Yang, H., Yang, L., Chen, H., Gao, R., Li, J., Lin, Y.
AUTHOR FULL NAMES: Tian, Xue (57810483900); Ma, Xinyu (58000762200); Huang, Maowei (57811754600); Guo, Yiting (58001187200); Yang, Hongfei (58002285700); Yang, Liusheng (57223991923); Chen, Hui (57144814700); Gao, Ruoyun (57223958497); Li, Jian (47161257300); Lin, Yongming (8869314500)
57810483900; 58000762200; 57811754600; 58001187200; 58002285700; 57223991923; 57144814700; 57223958497; 47161257300; 8869314500
Spatiotemporal Dynamic Characteristics of Land Use in the Typical Watershed of Wenchuan Earthquake-Affected Areas—A Case Study in the Longxi River Basin
(2022) Sustainability (Switzerland), 14 (23), art. no. 15937, Cited 7 times.
DOI: 10.3390/su142315937
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143765457&doi=10.3390%2Fsu142315937&partnerID=40&md5=d81b8a22076e74d33d6410fdf908f486

AFFILIATIONS: College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China; Key Laboratory for Forest Ecosystem Process and Management of Fujian Province, Fuzhou, Fujian, China
ABSTRACT: Major earthquakes cause serious damage to ecosystem structure and function through their huge destructive force and subsequent geohazards. Understanding the characteristics of post-earthquake land use change is of great interest to assess the effects of ecological restoration in earthquake-affected areas. However, little is known about the consequences of land use change on a small scale due to incomplete, non-comprehensive, and sparse research data. Here, we used remote-sensing images to study the land use change characteristics of the Longxi River before and after the Wenchuan earthquake by calculating the land use dynamics degree, transition matrix, and gravity center of the Longxi River Basin from 2005 to 2015. The Wenchuan earthquake disaster did not affect the main dominance of forests. Grassland, the second dominant land type, was replaced by geohazard-induced unutilized land after the earthquake. Compared with pre-earthquake in 2005, the areas of cultivated land, forest, grassland, and water area decreased, while those of construction land and unutilized land increased in 2015. The single land use dynamic degree and spatial dynamic change degree show the highest transition intensity of other land use types to unutilized land between 2005 and 2009. However, the degrees of all land use types decreased between 2009 and 2015. Both banks of the lower reach of the Longxi River had high and developing comprehensive indexes of land use degrees during the study period. The gravity centers of grassland, construction land, water, and cultivated land changed from north to south, while forest and unutilized land had the opposite pattern. Our results provide useful information for ecological restoration, ecological security, and soil-erosion control in earthquake-affected areas. © 2022 by the authors.
AUTHOR KEYWORDS: integrated land use degree; land use; land use transition matrix; Longxi River basin
INDEX KEYWORDS: earthquake; ecosystem structure; erosion control; gravity; land use change; remote sensing; spatiotemporal analysis; watershed; China; Gansu; Longxi
REFERENCES: Geographical Research, (2002); 
Foley, Jonathan A., Global consequences of land use, Science, 309, 5734, pp. 570-574, (2005); 
Li, Yuheng, Human-environment interactions in China: Evidence of land-use change in Beijing-Tianjin-Hebei metropolitan region, Human Ecology Review, 20, 1, pp. 26-35, (2013); 
Bull Soil Water Conserv, (2017); 
Sathiya Bama, V. P., Coastal vulnerability assessment of Vedaranyam swamp coast based on land use and shoreline dynamics, Natural Hazards, 100, 2, pp. 829-842, (2020); 
Botezan, Camelia Sabina, The challenge of social vulnerability assessment in the context of land use changes for sustainable urban planning—Case studies: Developing cities in Romania, Land, 11, 1, (2022); 
Rao, Enming, Changes in ecosystem service of soil conservation between 2000 and 2010 and its driving factors in southwestern China, Chinese Geographical Science, 26, 2, pp. 165-173, (2016); 
Piquer-Rodríguez, María, Drivers of agricultural land-use change in the Argentine Pampas and Chaco regions, Applied Geography, 91, pp. 111-122, (2018); 
Liu, Zijing, Efficient Identification and Monitoring of Landslides by Time-Series InSAR Combining Single-and Multi-Look Phases, Remote Sensing, 14, 4, (2022); 
Nath, Biswajit, Land Use and Land Cover changes, and environment and risk evaluation of Dujiangyan city (SW China) using remote sensing and GIS techniques, Sustainability (Switzerland), 10, 12, (2018)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Wang, L., Chang, M., Le, J., Xiang, L., Ni, Z.
AUTHOR FULL NAMES: Wang, Lei (57868244900); Chang, Ming (36727157900); Le, Jian (57868587100); Xiang, Lanlan (57506716000); Ni, Zhang (57868245000)
57868244900; 36727157900; 57868587100; 57506716000; 57868245000
Two multi-temporal datasets to track debris flow after the 2008 Wenchuan earthquake
(2022) Scientific Data, 9 (1), art. no. 525, Cited 17 times.
DOI: 10.1038/s41597-022-01658-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137054938&doi=10.1038%2Fs41597-022-01658-y&partnerID=40&md5=209074aa6f660ca2382088474bc7ddd8

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Ltd., Chengdu, Sichuan, China
ABSTRACT: We provide two datasets for tracking the debris flow induced by the 2008 Wenchuan Mw 7.9 earthquake on a section of the Longmen mountains on the eastern side of the Tibetan plateau (Sichuan, China). The database was obtained through a literature review and field survey reports in the epicenter area, combined with high-resolution remote sensing image and extensive data collection and processing. The first dataset covers an area of 892 km2, including debris flows from 2008 to 2020 (an updated version). 186 debris flows affecting 79 watersheds were identified. 89 rainfall stations were collected to determine the rainfall events for the post-earthquake debris flow outbreak. The second database is a list of mitigation measures for post-earthquake debris flows, including catchment name, check dam number, coordinates, construction time, and successful mitigation date. The datasets can aid different applications, including the early warning and engineering prevention of post-earthquake debris flow, as well as provide valuable data support for research in related disciplines. © 2022, The Author(s).
INDEX KEYWORDS: China; earthquake; information processing; Data Collection; Earthquakes
REFERENCES: Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Keefer, David K., Investigating landslides caused by earthquakes - A historical review, Surveys in Geophysics, 23, 6, pp. 473-510, (2002); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Li, Gen, Seismic mountain building: Landslides associated with the 2008 Wenchuan earthquake in the context of a generalized model for earthquake volume balance, Geochemistry, Geophysics, Geosystems, 15, 4, pp. 833-844, (2014); 
Li, Gen, Earthquakes drive focused denudation along a tectonically active mountain front, Earth and Planetary Science Letters, 472, pp. 253-265, (2017); 
Marc, Odin, A seismologically consistent expression for the total area and volume of earthquake-triggered landsliding, Journal of Geophysical Research: Earth Surface, 121, 4, pp. 640-663, (2016); 
Huang, Runqiu, The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake, May 12, 2008, China, Landslides, 9, 1, pp. 131-142, (2012)
PUBLISHER: Nature Research
DOCUMENT TYPE: Data paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Yuan, X., Liu, C., Lu, H., Nie, R., Chen, C., Liu, T., Wang, D., Tang, M., Yang, Z.
AUTHOR FULL NAMES: Yuan, Xinyue (57797334600); Liu, Chao (57444861000); Lu, Heng (56131247400); Nie, Ruihua (15822189300); Chen, Chen (57201037694); Liu, Tiegang (56505827500); Wang, Dong (56918729300); Tang, Min (57197825267); Yang, Zhengli (57188686820)
57797334600; 57444861000; 56131247400; 15822189300; 57201037694; 56505827500; 56918729300; 57197825267; 57188686820
Analysing Evolution Characteristics of Landslide Deposits in Shouxi River Basin in the Wenchuan Earthquake Zone 汶 川 震 区 寿 溪 河 流 域 崩 滑 物 源 演 化 特 征 分 析
(2022) Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences, 54 (6), pp. 32 - 42, Cited 1 times.
DOI: 10.15961/j.jsuese.202200732
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147526767&doi=10.15961%2Fj.jsuese.202200732&partnerID=40&md5=5453cf779191d4fd76d9454197dfa993

AFFILIATIONS: Sichuan University, Chengdu, Sichuan, China; Sichuan University, Chengdu, Sichuan, China; China Railway Eryuan Engineering Group Co. Ltd., Chengdu, Sichuan, China
ABSTRACT: Landslide deposits are one of the main sources of flash flood and sediment disaster, and their spatio-temporal distribution and evolution characteristics play an important role in the early identification of flash flood and sediment disaster areas and the study of risk areas. In order to explore the spatio-temporal evolution characteristics of landslide deposits in the Wenchuan earthquake zone, this paper selected Shouxi River Basin, a typical basin in Wenchuan, as the research area, and respectively interpreted the landslide deposits based on the five stage high-resolution remote sensing images in 2007, 2009, 2012, 2015 and 2018, and established a long time series data set of “pre-earthquake and post-earthquake” landslide deposits in the research area, and combined with the key control factors such as elevation, slope, aspect, distance from channel, distance from fault and average annual precipitation, quantitatively analyzed the relationship between evolution characteristics of landslide deposits and each factor based on certainty factor model (CF), finally calculated the vegetation fraction coverage (VFC) and the vegetation coverage recovery rate (VCRR) to explore the effect of vegetation restoration on landslide deposits activities. The research results showed that the areas of landslide deposits of five stage images were 15.68×104 m2, 442.45×104 m2, 252.86×104 m2, 146.07×104 m2, 98.97×104 m2, and were attenuated by exponential function mode. In addition, the predicted time for the area of landslide deposits to recover to the pre-earthquake level is about 21 a. The area with the strongest activity of post-earthquake landslide deposits in the study area is 1200～2400 m in elevation, 60° in slope, SE in slope direction, less than 800 m in distance from channel, less than 1500 m in distance from fault and 830～850 mm in the average annual precipitation . The evolution trend is that the activity of the landslide deposits increases in the area with an elevation of more than 2000 m, a slope of less than 40°, a distance of more than 200 m from the channel,a distance of more than 1500 m from the fault, the average annual precipitation is more than 840 and decrease in the aspect of E, SE and S sides. VFC increases linearly with time after the earthquake, and it is predicted that the vegetation coverage will return to the pre-earthquake level at least 14 years after the earthquake. In 2012, 2015 and 2018, the areas with moderate or above VCRR account for 37.32%, 64.24% and 70.69%, respectively. In places with high VCRR, the activity of landslide deposits is low and decreases with time, and vegetation restoration can effectively reduce the activity of landslide deposits. The above research is of great significance to enrich the theory of landslide deposits evolution and flash flood and sediment disaster risk prediction. © 2022 Editorial Department of Journal of Sichuan University. All rights reserved.
AUTHOR KEYWORDS: flash flood and sediment disaster; landslide deposits; Shouxi River Basin; spatio-temporal evolution; vegetation recovery
INDEX KEYWORDS: Deposits; Disasters; Exponential functions; Faulting; Floods; Landforms; Landslides; Recovery; Remote sensing; Rivers; Sediments; Vegetation; Watersheds; Evolution characteristics; Flash flood and sediment disaster; Flash-floods; Flood disaster; Landslide deposits; River basins; Sediment disaster; Shouxi river basin; Spatiotemporal evolution; Vegetation recovery; Earthquakes
REFERENCES: Cheng, Jack D., Hydrometeorological and landuse attributes of debris flows and debris floods during typhoon Toraji, July 29-30, 2001 in central Taiwan, Journal of Hydrology, 306, 1-4, pp. 161-173, (2005); 
Dunning, Stuart A., The Hattian Bala rock avalanche and associated landslides triggered by the Kashmir Earthquake of 8 October 2005, Engineering Geology, 93, 3-4, pp. 130-144, (2007); 
Görüm, Tolga, Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake, Geomorphology, 184, pp. 127-138, (2013); 
Xu, Chong, Landslides triggered by the 20 April 2013 Lushan, China, Mw 6.6 earthquake from field investigations and preliminary analyses, Landslides, 12, 2, pp. 365-385, (2015); 
Fan, Xuanmei, Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification, Landslides, 15, 5, pp. 967-983, (2018); 
Science Technology Review, (2009); 
Journal of Engineering Geology, (2010); 
Journal of Sediment Research, (2019); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011)
PUBLISHER: Sichuan University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tie, Y., Zhang, X., Lu, J., Liang, J., Wang, D., Ma, Z., Li, Z., Lu, T., Shi, S., Liu, M., Ba, R., He, L., Zhang, X., Gan, W., Chen, K., Gao, Y., Bai, Y., Gong, L., Zeng, X., Xu, W.
AUTHOR FULL NAMES: Tie, Yongbo (26656325300); Zhang, Xianzheng (57219298270); Lu, Jiayan (57197830266); Liang, Jingtao (35205586800); Wang, Donghui (57194684226); Ma, Zhigang (57190665580); Li, Zongliang (56075326500); Lu, Tuo (57673649000); Shi, Shengwei (59594226100); Liu, Minsheng (58315952300); Ba, Renji (36630009800); He, Longjiang (58399823900); Zhang, Xinke (58401198400); Gan, Wei (58090764300); Chen, Kai (58404638700); Gao, Yanchao (8404219500); Bai, Yongjian (41861091800); Gong, Lingfeng (57215612725); Zeng, Xiaowen (58400507000); Xu, Wei (55338147000)
26656325300; 57219298270; 57197830266; 35205586800; 57194684226; 57190665580; 56075326500; 57673649000; 59594226100; 58315952300; 36630009800; 58399823900; 58401198400; 58090764300; 58404638700; 8404219500; 41861091800; 57215612725; 58400507000; 55338147000
Characteristics of geological hazards and it’s mitigations of the Ms6.8 earthquake in Luding County, Sichuan Province 四川省泸定县 Ms6.8 级地震地质灾害发育规律与减灾对策
(2022) Hydrogeology and Engineering Geology, 49 (6), pp. 1 - 12, Cited 39 times.
DOI: 10.16030/j.cnki.issn.1000-3665.202209023
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147498822&doi=10.16030%2Fj.cnki.issn.1000-3665.202209023&partnerID=40&md5=b62ca0b4996d46d2cd16d7d62bdc5461

AFFILIATIONS: China Geological Survey, Beijing, Beijing, China; School of Engineering and Technology, Beijing, China; Sichuan Geological Survey, Chengdu, China; Sichuan Institute of Land and Space Ecological Restoration and Geological Hazard Prevention, Chengdu, China; Institute of Exploration Technology, CAGS, Chengdu, China; Application Center of Geological Survey, Chengdu, China
ABSTRACT: On September 5th, 2022, the Ms 6.8 earthquake in Luding County, Sichuan Province induced large numbers of geological hazards. In order to deeply understand the evolution, distribution, and characteristics of geological hazards caused by the earthquake, we obtained the distribution of geological hazards by the field investigation and remote sensing interpretation. The conditions for hazard control and the countermeasures for hazard prevention and reduction are also analyzed. The results show that as of 22:00 on September 14, 2022, the earthquake has induced 565 geological hazards with threat objects in Luding County and Shimian County (including 331 collapses and 234 landslides), and 81 existing geological hazards whose deformation increased. The geological hazards induced by the earthquake are mainly medium and small mass high-level collapses, which are mainly concentrated in the areas with Seismic intensity zone of Ⅸ near the epicenter. These areas include Moxi Town, Detuo Township, both banks of Dadu River between Detuo Township and Dewei town in Luding County, Caoke Township and Wanggangping Township in Shimian County. According to the experience of the Wenchuan earthquake, the debris flow will be active in the next five years, and its characteristics of high frequency and viscous debris flow should be considered in the design of debris flow prevention and control engineering. Under the rainfall condition, the landslide deposition remaining on the slopes of Dadu River banks in the section of Detuo Township—Dewei Town can easily transform into debris flow. The transformation forms of the two hazards’ types should be fully considered in the design of prevention and control projects. The study can provide a reference for earthquake geological hazard prevention and post hazard reconstruction planning in the earthquake area. © 2022 Editorial Office of Hydrogeology and Engineering. All rights reserved.
AUTHOR KEYWORDS: co-seismic geological hazards; evolution trend; hazard control conditions; hazard mitigation countermeasures; Ms 6.8 earthquake in Luding County
REFERENCES: China Earthquake Engineering Journal, (2022); 
Democracy and Science, (2017); 
China Earthquake Engineering Journal, (2016); 
China Earthquake Engineering Journal, (2013); 
Yang, Zhihua, Predicting seismic landslide hazard in the Batang fault zone of the Qinghai-Tibet Plateau, Hydrogeology and Engineering Geology, 48, 5, pp. 91-101, (2021); 
Gong, Jianhuaa Hua, Earthquake-induced geological hazards detection under hierarchical stripping classification framework in the Beichuan area, Landslides, 7, 2, pp. 181-189, (2010); 
Li, Mingwei, Spatio-temporal evolution characteristics of landslides in debris flow catchment in Beichuan County in the Wenchuan earthquake zone, Hydrogeology and Engineering Geology, 47, 3, pp. 182-190, (2020); 
Lai, Carlo Giovanni, Technical guidelines for the assessment of earthquake induced liquefaction hazard at urban scale, Bulletin of Earthquake Engineering, 19, 10, pp. 4013-4057, (2021); 
Li, Juan, An evolution analysis of the impact energy damage of collapsed rolling stones under strong earthquakes, Hydrogeology and Engineering Geology, 49, 2, pp. 157-163, (2022); 
Zhang, Xianzheng, Investigation of the 2019 Wenchuan County debris flow disaster suggests nonuniform spatial and temporal post-seismic debris flow evolution patterns, Landslides, 19, 8, pp. 1935-1956, (2022)
PUBLISHER: Editorial Office of Hydrogeology and Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Gao, J., Zhang, W., Yang, C., Wang, R., Shao, S., Li, J., Zhang, L., Li, Z., Liu, S., Si, W.
AUTHOR FULL NAMES: Gao, Jie (57210170565); Zhang, Wu (57980239700); Yang, Chunbaixue (57889337000); Wang, Rui (7405338413); Shao, Shuai (57205574431); Li, Jiawei (57979681400); Zhang, Limiao (58151550000); Li, Zhijian (55707211000); Liu, Shu (57355526100); Si, Wentao (57793271900)
57210170565; 57980239700; 57889337000; 7405338413; 57205574431; 57979681400; 58151550000; 55707211000; 57355526100; 57793271900
Comparative Study on International Research Hotspots and National-Level Policy Keywords of Dynamic Disaster Monitoring and Early Warning in China (2000–2021)
(2022) International Journal of Environmental Research and Public Health, 19 (22), art. no. 15107, Cited 4 times.
DOI: 10.3390/ijerph192215107
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142540643&doi=10.3390%2Fijerph192215107&partnerID=40&md5=ae3c05acb58193c18d970c4996ac8b19

AFFILIATIONS: School of Innovation and Entrepreneurship, Shandong University, Jinan, Shandong, China; School of Finance, Hunan University of Finance and Economics, Changsha, Hunan, China; Institute of Marine Science and Technology, Shandong University, Jinan, Shandong, China; Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Science, Qingdao, Shandong, China; Anhui University, Hefei, Anhui, China; School of Environment, Tsinghua University, Beijing, China; Institute for Intelligent Society Governance, Tsinghua University, Beijing, China; School of Public Administration, Shandong Normal University, Jinan, Shandong, China
ABSTRACT: For more than 20 years, disaster dynamic monitoring and early warning have achieved orderly and sustainable development in China, forming a systematic academic research system and top-down policy design, which are inseparable from the research of China’s scientific community and the promotion of government departments. In the past, most of the research on dynamic disaster monitoring and early warning focused on specific research in a certain field, scene, and discipline, while a few studies focused on research review or policy analysis, and few studies combined macro and meso research reviews in academia with national policy analysis for comparative analysis. It is necessary and urgent to explore the interaction between scholars’ research and policy deployment, which can bring theoretical contributions and policy references to the top-down design, implementation promotion, and academic research of China’s dynamic disaster monitoring and early warning. Based on 608 international research articles on dynamic disaster monitoring and early warning published by Chinese scholars from 2000–2021 and 187 national policy documents published during this period, this paper conducts a comparative analysis between the knowledge maps of international research hotspots and the co-occurrence maps of policy keywords on dynamic disaster monitoring and early warning. The research shows that in the stage of initial development (2000–2007), international research articles are few and focused, and research hotspots are somewhat alienated from policy keywords. In the stage of rising development (2008–2015), after the Wenchuan earthquake, research hotspots are closely related to policy keywords, mainly in the fields of geology, engineering disasters, meteorological disasters, natural disasters, etc. Meanwhile, research hotspots also focus on cutting-edge technologies and theories, while national-level policy keywords focus more on overall governance and macro promotion, but the two are gradually closely integrated. In the stage of rapid development (2016–2021), with the continuous attention and policy promotion of the national government, the establishment of the Ministry of Emergency Management, and the gradual establishment and improvement of the disaster early warning and monitoring system, research hotspots and policy keywords are integrated and overlapped with each other, realizing the organic linkage and mutual promotion between academic research and political deployment. The motivation, innovation, integration, and transformation of dynamic disaster monitoring and early warning are promoted by both policy and academic research. The institutions that issue policies at the national level include the State Council and relevant departments, the Ministry of Emergency Management, the Ministry of Water Resources, and other national ministries and commissions. The leading affiliated institutions of scholars’ international research include China University of Mining and Technology, Chinese Academy of Sciences, Wuhan University, Shandong University of Science and Technology, and other institutions. The disciplines involved are mainly multidisciplinary geosciences, environmental sciences, electrical and electronic engineering, remote sensing, etc. It is worth noting that in the past two to three years, research and policies focusing on COVID-19, public health, epidemic prevention, environmental governance, and emergency management have gradually increased. © 2022 by the authors.
AUTHOR KEYWORDS: disaster prevention and mitigation; dynamic disaster monitoring and early warning; emergency management; knowledge map visualization; policy document quantification; policy keyword; research hotspot
INDEX KEYWORDS: comparative study; disaster management; dynamic response; early warning system; knowledge based system; research; sustainable development; Article; disaster mitigation; disaster planning; emergency management; environmental monitoring; environmental science; epidemic; geology; government; health care policy; health promotion; human; meteorology; natural disaster; remote sensing; China
REFERENCES: Chinas Disaster Reduction Action, (2009); 
Circular of National Disaster Reduction Commission on Printing and Distributing the National Comprehensive Disaster Prevention and Reduction Plan for the Fourteenth Five Year Plan, (2022); 
J Mudanjiang Norm Univ Nat Sci Ed, (2020); 
Li, Xuelong, Research on the mechanism of rockburst based on resonance effect, Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering, 39, 3, pp. 527-545, (2022); 
Liu, Zhu, Climate policy: Steps to China's carbon peak, Nature, 522, 7556, pp. 279-281, (2015); 
China Emergency Management Science, (2020); 
Disast Re Chin, (2022); 
Basher, Reid, Global early warning systems for natural hazards: Systematic and people-centred, Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 364, 1845, pp. 2167-2182, (2006); 
Ahmed, Bayes, Developing a dynamic web-GIS based landslide early warning system for the Chittagong metropolitan area, Bangladesh, ISPRS International Journal of Geo-Information, 7, 12, (2018); 
Henriksen, Hans Jørgen, Participatory early warning and monitoring systems: A Nordic framework for web-based flood risk management, International Journal of Disaster Risk Reduction, 31, pp. 1295-1306, (2018)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Mingli, L., Jianlong, C.
AUTHOR FULL NAMES: Mingli, Li (59792792000); Jianlong, Cheng (57804923000)
59792792000; 57804923000
The starting mechanism study on rainfall-induced sloop loose source in strong earthquake area
(2022) Natural Hazards, 114 (2), pp. 1685 - 1707, Cited 4 times.
DOI: 10.1007/s11069-022-05442-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134218737&doi=10.1007%2Fs11069-022-05442-4&partnerID=40&md5=3b59be67763bcaa5cb986745e27982f4

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Chengdu University of Technology, Chengdu, China
ABSTRACT: The 5.12 Wenchuan earthquake in 2008 led to a large number of loose deposits on the slope on both sides of the gully in the formation area. Under the triggering action of heavy rainfall, the previously unrecognized slope loose source in formation areas easily failed and started earlier than the overall start of the gully debris flow, which has practical significance for realizing the early warning of the gully debris flow starting. The special loose source conditions and postearthquake geological environment change the hydraulic mechanism of traditional debris flow start-up, which brings great difficulties to the monitoring and early warning of postearthquake debris flows. Therefore, based on hydraulics, on the premise of building a hydraulic model of groundwater level change of loose slope accumulation body, the characteristics and rules of groundwater level change are analyzed with the aid of hydraulic seepage theories, and the action characteristics of hydrodynamic pressure and hydrostatic pressure on the accumulation body are quantitatively studied. Based on field exploration data and average slope gradient, we divided the accumulation body in a reasonable manner; completed the sliding force, anti-sliding force and residual-sliding force mechanical expression and establishment; and performed a slope stability analysis. The research results show that the slope starting mode is divided into the thrust-type landslide and the retrogressive landslide mode of the subsection disintegration. The hydraulic deposit mechanism analytical results can also reverse the critical rainfall condition of slope failure. Finally, taking the Yindongzi gully in Dujiangyan as an example, the hydraulic mechanism of typical slope deposits in the formation area was analyzed and combined with the historical debris flow events in the study area to verify the physical simulation test, which was consistent with the field investigation results after the disaster. © 2022, The Author(s), under exclusive licence to Springer Nature B.V.
AUTHOR KEYWORDS: Debris flow; Early warning; Hydraulic mechanism; Rainfall; Slope loose sources
INDEX KEYWORDS: debris flow; early warning system; earthquake damage; earthquake magnitude; hazard assessment; mitigation; natural hazard; precipitation intensity; Sichuan earthquake 2008; China; Dujiangyan; Sichuan
REFERENCES: Allaire, Suzanne Edith, Quantifying preferential flow in soils: A review of different techniques, Journal of Hydrology, 378, 1-2, pp. 179-204, (2009); 
Factors Controlling the Strength of Partly Saturated Cohesive Soils Rearch Conference on Shear Strength of Cohesive Soil, (1961); 
Hydrological Processes, (2010); 
Chinese Science Bulletin, (1992); 
Cui, Yifei, Investigation of the initiation of shallow failure in widely graded loose soil slopes considering interstitial flow and surface runoff, Landslides, 16, 4, pp. 815-828, (2019); 
Cui, Yifei, Experimental study on the moving characteristics of fine grains in wide grading unconsolidated soil under heavy rainfall, Journal of Mountain Science, 14, 3, pp. 417-431, (2017); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Gabet, Emmanuel J., The mobilization of debris flows from shallow landslides, Geomorphology, 74, 1-4, pp. 207-218, (2006); 
Gao, Bing, Macro-meso analysis of water-soil interaction mechanism of debris flow starting process, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 30, 12, pp. 2567-2573, (2011); 
Guo, Chaoxu, Pore structure characteristics of debris flow source material in the Wenchuan earthquake area, Engineering Geology, 267, (2020)
PUBLISHER: Springer Science and Business Media B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiang, M., Deng, Q., Duan, L., Yang, J., Wang, C., Liu, J., Liu, M.
AUTHOR FULL NAMES: Xiang, Mingshun (50662335500); Deng, Qiuchi (57457511000); Duan, Linsen (57218939395); Yang, Jin (24741227200); Wang, Chunjian (57218935132); Liu, Jiashuo (57457606800); Liu, Mengli (57197809676)
50662335500; 57457511000; 57218939395; 24741227200; 57218935132; 57457606800; 57197809676
Dynamic monitoring and analysis of the earthquake Worst-hit area based on remote sensing
(2022) Alexandria Engineering Journal, 61 (11), pp. 8691 - 8702, Cited 18 times.
DOI: 10.1016/j.aej.2022.02.001
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124813530&doi=10.1016%2Fj.aej.2022.02.001&partnerID=40&md5=26d755739529c336b6244b1aa1c02a15

AFFILIATIONS: College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China; Chengdu University of Technology, Chengdu, China; School of Geography, South China Normal University, Guangzhou, Guangdong, China
ABSTRACT: The earthquake and its secondary geological disasters have some long-term effects on vegetation recovery, and the spatiotemporal differentiation of vegetation coverage in earthquake-stricken areas are often not valued by researchers. Beichuan County in Sichuan Province is the worst-hit area during Wenchuan earthquake, tracking the vegetation coverage in this disaster area can provide feedback for post-earthquake ecological restoration. Based on remote sensing (RS) and Geographic information system (GIS), this paper relies on dimidiate pixel model (DPM) and vegetation coverage transfer matrix to explore the vegetation coverage of the earthquake worst-hit area. The results show that the overall level of vegetation coverage in Beichuan county is high, and earthquakes are dominant in the areas with high vegetation coverage. Besides, earthquake can do most severe damages to the areas with high vegetation coverage, followed by medium damage impacting to the areas with medium vegetation coverage, but the damage of other areas are relatively small. From 2007 to 2020, the average vegetation coverage in Beichuan County decreased from 0.835 in 2007 to 0.755 in 2008, then gradually recovered to 0.826 in 2020, experiencing a sharp decline and then a steady increase. The recovery of vegetation coverage is improved over time, but the spatiotemporal differences of the recovery process are obvious. Elevation has the largest driving force on vegetation coverage (q = 0.569, p less than 0.001), followed by temperature and rainfall; the interaction between factors has a significant increasement in the spatial differentiation of vegetation coverage, indicating that vegetation coverage is a combination result of multiple factors. The research findings can help construct the scientific management of the eco-environment in the disaster area, it can also help builda medium to long-term ecological restoration plan according to the variation in vegetation coverage. © 2022 THE AUTHORS
AUTHOR KEYWORDS: Earthquake; Eco-environment; Remote sensing; Vegetation coverage; Vegetation index
INDEX KEYWORDS: Earthquakes; Ecology; Recovery; Remote sensing; Restoration; Transfer matrix method; Vegetation; Disaster areas; Dynamic monitoring; Dynamics analysis; Earthquake; Eco-environments; Ecological restoration; Monitoring and analysis; Remote-sensing; Vegetation coverage; Vegetation index; Disasters
REFERENCES: Fu, Bojie, The effect of land use Chang on the regional environment in the Yangjuangou catchment in the Loess Pplateau of China, Dili Xuebao/Acta Geographica Sinica, 54, 3, pp. 241-246, (1999); 
Bull Chin Acad Sci, (2008); 
Ouyang, Zhiyun, Impact assessment of Wenchuan Earthquake on ecosystems, Shengtai Xuebao, 28, 12, pp. 5801-5809, (2008); 
Xu, Jiceng, Monitoring the riparian vegetation cover after the Wenchuan earthquake along the Minjiang River valley based on multi-temporal Landsat TM images: A case study of the Yingxiu-Wenchuan section, Shengtai Xuebao, 33, 16, pp. 4966-4974, (2013); 
Advance in Earth Sciences, (2003); 
Serbin, Guy, Assessment of spectral indices for cover estimation of senescent vegetation, Remote Sensing Letters, 4, 6, pp. 552-560, (2013); 
Gao, Lin, Remote sensing algorithms for estimation of fractional vegetation cover using pure vegetation index values: A review, ISPRS Journal of Photogrammetry and Remote Sensing, 159, pp. 364-377, (2020); 
Gitelson, Anatoly A., Remote estimation of crop fractional vegetation cover: The use of noise equivalent as an indicator of performance of vegetation indices, International Journal of Remote Sensing, 34, 17, pp. 6054-6066, (2013); 
Zhang, Yahai, Spatial and temporal variations in vegetation coverage observed using AVHRR GIMMS and Terra MODIS data in the mainland of China, International Journal of Remote Sensing, 41, 11, pp. 4238-4268, (2020); 
Peng, Wenfu, Influence of natural factors on vegetation NDVI using geographical detection in Sichuan Province, Dili Xuebao/Acta Geographica Sinica, 74, 9, pp. 1758-1776, (2019)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Qiu, L., Zeng, W., Dai, Y., Li, J., Bian, A., Gai, H., Di, B.
AUTHOR FULL NAMES: Qiu, Lingke (58724749000); Zeng, Wen (57201792597); Dai, Yue (59895309100); Li, Junhui (58724705100); Bian, Ang (57191881825); Gai, Hongkun (59895376400); Di, Baofeng (14057800700)
58724749000; 57201792597; 59895309100; 58724705100; 57191881825; 59895376400; 14057800700
Study on the Spatial Heterogeneity of Vegetation Carbon Storage Regarding to Catastrophic Stress 巨灾胁迫下植被碳储量地域分异规律研究
(2022) Journal of Catastrophology, 37 (4), pp. 115 - 122, Cited 2 times.
DOI: 10.3969/j.issn.1000-811X.2022.04.019
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105004994528&doi=10.3969%2Fj.issn.1000-811X.2022.04.019&partnerID=40&md5=606cda07f9adc8891102fd0a989674cb

AFFILIATIONS: College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China; Institute for Disaster Management and Reconstruction, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, Hong Kong; College of Computer Science, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: The key component of carbon neutrality, as an important measure to cope with climate change in China, is the balance of carbon sources and sinks, and the carbon storage capacity of forest vegetation plays an important role in carbon balance. However, Catastrophes could destroy vegetation and change the spatial and temporal processes of regional carbon storage. Clarifying the damage and recovery process of regional carbon storage capacity under catastrophic stress and the regional differentiation pattern can provide a basis for spatial and temporal carbon neutral accounting in catastrophe - affected areas. The InVEST model is used to investigate the geographic variation of vegetation carbon stocks under the earthquake catastrophe stress from 2001 to 2019 in the “hardest - hit area of 2008 Wenchuan earthquake”. The following conclusions are obtained: (1) The total carbon storage in the region is generally increasing, with an average annual increase of about 1.45 × 106 tC, and the carbon stock decreased significantly with a loss of 7.36 × 106 tC (1.22% of the regional total carbon stock in 2007) after the earthquake; (2) Carbon storage changes in disaster areas are closely related to areas with seismic intensity above IX. The carbon storages in the intensity X and XI regions continued to decrease in two years after the earthquake, and then began to recover slowly, and by 2019, the level X region had roughly recovered to the pre - earthquake level, while the XI zone had only recovered to 91.77% of the pre - earthquake level; (3) The earthquake has not significantly affected the elevation diversity of regional carbon stocks, while the slope diversity is more significant, and loss was mainly in the range of steep and very steep slopes. In conclusion, the loss and recovery process of vegetation carbon stock under earthquake stress has regional variability, and its changes in different seismic intensity zones and different topographic regions are mainly due to the destruction of vegetation by co - earthquake landslides and other secondary geological hazards. © 2022 Shaanxi Earthquake Agency. All rights reserved.
AUTHOR KEYWORDS: catastrophe; catastrophe stress; GIS; InVEST model; spatial heterogeneity; vegetation carbon storage; Wenchuan Earthquake
REFERENCES: Summary for Policymakers, (2018); 
HOUGHTON, R. A., Balancing the global carbon budget, Annual Review of Earth and Planetary Sciences, 35, pp. 313-347, (2007); 
Lorenz, Klaus E., Carbon sequestration in forest ecosystems, pp. 1-277, (2010); 
Bousquet, Philippe, Regional changes in carbon dioxide fluxes of land and oceans since 1980, Science, 290, 5495, pp. 1342-1346, (2000); 
undefined; 
Wei, Yawei, Forest carbon storage and tree carbon pool dynamics under natural forest protection program in northeastern China, Chinese Geographical Science, 24, 4, pp. 397-405, (2014); 
Zarandian, Ardavan, Scenario modeling for spatial-temporal change detection of carbon storage and sequestration in a forested landscape in Northern Iran, Environmental Monitoring and Assessment, 190, 8, (2018); 
Allen, Robert B., Immediate damage by an earthquake to a temperate montane forest, Ecology, 80, 2, pp. 708-714, (1999); 
Halvorson, Sarah Jean, Vulnerability and the erosion of seismic culture in mountainous Central Asia, Mountain Research and Development, 27, 4, pp. 322-330, (2007); 
undefined, (2016)
PUBLISHER: Shaanxi Earthquake Agency
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, X., Xu, C., Xiwei, X., Chen, G., Zhu, A., Zhang, L., Yu, G., Du, K.
AUTHOR FULL NAMES: Wu, Xiyan (55567917900); Xu, Chong (35184309900); Xiwei, Xu (8246843900); Chen, Guihua (55733464100); Zhu, Ailan (8969927300); Zhang, Ling (55217424800); Yu, Guihua (7403528699); Du, Keping (8599897700)
55567917900; 35184309900; 8246843900; 55733464100; 8969927300; 55217424800; 7403528699; 8599897700
A Web-GIS hazards information system of the 2008 Wenchuan Earthquake in China
(2022) Natural Hazards Research, 2 (3), pp. 210 - 217, Cited 13 times.
DOI: 10.1016/j.nhres.2022.03.003
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139328799&doi=10.1016%2Fj.nhres.2022.03.003&partnerID=40&md5=a7818d0c322551177462a1fc9f52de41

AFFILIATIONS: Ministry of Emergency Management of China, Beijing, Beijing, China; Institute of Geology, China Earthquake Administration, Beijing, China; Key Laboratory of Compound and Chained Natural Hazards Dynamics, Ministry of Emergency Management of China, Beijing, Beijing, China; Shanghai Earthquake Agency, Shanghai, China; Beijing Normal University, Beijing, China
ABSTRACT: The typical earthquake hazards chain includes main shock, surface ruptures, aftershocks, and earthquake-induced landslides, leading to structural damage and casualties. Lots of investigation and research were published. But there is no Web-GIS platform to integrate earthquake hazards chain data and compare relative research results. This paper studies compiling such a hazards chain database and building a cloud-based Web-GIS system of the 2008 earthquake. The system introduced by this paper provides buttons and tools to browse, query and analyze map data. In addition, this system is open to anyone to add data for viewing and comparing in the web map. The result showcases that the cloud-based system runs efficiently and flexibly. The multi-scale and multi-source data can be integrated into a “one-map” system by well-design map services and geodatabase. © 2022 National Institute of Natural Hazards, Ministry of Emergency Management of China
AUTHOR KEYWORDS: Active fault; Geographic information; Hazard; Landslide; Longmen Shan fault belt; Surface rupture; Wenchuan earthquake
REFERENCES: Agrawal, Sonam K., Web GIS and its architecture: a review, Arabian Journal of Geosciences, 10, 23, (2017); 
Symposium on Geospatial Theory Processing and Applications, (2002); 
Brown, Alexander, AcoustiCloud: A cloud-based system for managing large-scale bioacoustics processing, Environmental Modelling and Software, 131, (2020); 
Chen, Guoguang, Primary research of activity segmentation of Longmenshan fault zone since late-quaternary, Dizhen Dizhi, 29, 3, pp. 657-673, (2007); 
undefined, (2020); 
Chen, Jiu Hui, Seismotectonic study by relocation of the Wenchuan Ms8.0 earthquake sequence, Acta Geophysica Sinica, 52, 2, pp. 390-397, (2009); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
undefined, (2008); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
de Lázaro-Torres, Maria Luisa, WebGIS and geospatial technologies for landscape education on personalized learning contexts, ISPRS International Journal of Geo-Information, 6, 11, (2017)
PUBLISHER: KeAi Communications Co.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Lyu, J.-R., Bao, Y., Xie, H.-Y., Li, H., Hu, Y., He, X.-B.
AUTHOR FULL NAMES: Lyu, Jiaorong (57209455938); Bao, Yuhai (57214924430); Xie, Hangyu (57904395200); Li, Hong (57904991700); Hu, Yunhua (56079809600); He, Xiubin (12344588300)
57209455938; 57214924430; 57904395200; 57904991700; 56079809600; 12344588300
Spatiotemporal variation of the loose deposits in Baisha River Basin after the 2008 Wenchuan earthquake
(2022) Journal of Mountain Science, 19 (9), pp. 2544 - 2555, Cited 4 times.
DOI: 10.1007/s11629-022-7519-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138719649&doi=10.1007%2Fs11629-022-7519-y&partnerID=40&md5=0a072d77685b129b703f6e1c8630a1fd

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Sichuan Third Surveying and Mapping Engineering Institute, Chengdu, Sichuan, China
ABSTRACT: Extensive landslides were triggered by the Wenchuan earthquake (in China) on 12 May 2008, causing a tremendous amount of loose material suspended on the hillslopes, likely to be eroded and transported by rain. It is of great significance to study the long-term variation of the quantity and spatiotemporal distribution of loose deposits after a great earthquake in order to understand the restoration process, to assess the risk of future soil erosion, including geological hazards, and to further develop ecological governance strategy. In this study, information about the multi-temporal loose deposits on the ranges of the Baisha River Basin, an alpine valley near the epicenter, was extracted by object-oriented remote sensing interpretation, and analysis on their spatiotemporal variation showed that the earthquake in 2008 resulted in loose deposits covering an additional area of 81.09 km2, with a volume estimated at 0.357 billion m3. Within five years after the earthquake, the vegetation had recovered rapidly, and the extent of the deposits was significantly less. From 5 to 13 years after the earthquake, the vegetation continued to recover but at a slower rate and a decreasing trend in newly formed deposits was evident. The total area, volume and quantity of the loose deposits gradually stabilized. The geometric mean center of the loose deposits gradually moved back towards the upstream area after the earthquake and, by 2021, the mean center was about 4 km away from its pre-earthquake position. Taking the mean center of the loose deposits in 2008 as the center, the deposits in the downstream area shrank significantly after the earthquake, but collapses and landslides of deposits persisted in the upstream area to the west-southwest, west-northwest and north-northwest from the mean center, indicating future source areas of new loose deposits in the basin. © 2022, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: earthquake-triggered disaster; Loose deposits; Remote sensing; Soil erosion; Wenchuan earthquake
INDEX KEYWORDS: earthquake trigger; hillslope; landslide; remote sensing; seismic hazard; Sichuan earthquake 2008; soil erosion; spatiotemporal analysis; Baisha; China; Hainan
REFERENCES: Bayram, Adem, Estimation of suspended sediment concentration from turbidity measurements using artificial neural networks, Environmental Monitoring and Assessment, 184, 7, pp. 4355-4365, (2012); 
Chen, Fulong, Synthetic aperture radar (SAR) interferometry for assessing Wenchuan earthquake (2008) deforestation in the Sichuan giant panda site, Remote Sensing, 6, 7, pp. 6283-6299, (2014); 
Chen, Huai, Aftermath of the wenchuan earthquake, Frontiers in Ecology and the Environment, 7, 2, (2009); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Journal of Mountain Science, (2009); 
Journal of Engineering Geology, (2017); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Ding, Hairong, Influences of disaster chain driven by Wenchuan earthquake on sediment discharge in upper reaches of Minjiang river, Sichuan, China, Journal of Chengdu University of Technology (Science and Technology Edition), 40, 6, pp. 712-720, (2013); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Luo, X., Feng, Q., Jia, Y., Chen, H., Song, Y., Xu, W.
AUTHOR FULL NAMES: Luo, Xin (57196018157); Feng, Qian (57192695805); Jia, Yuzhen (57904109100); Chen, Hongyan (57904921300); Song, Yiyun (57903694500); Xu, Wenbo (56237288700)
57196018157; 57192695805; 57904109100; 57904921300; 57903694500; 56237288700
The Large-Scale Investigation and Analysis of Lophodermium piceae in Subalpine Areas Based on Satellite Multi-Spectral Remote Sensing
(2022) Diversity, 14 (9), art. no. 727, Cited 2 times.
DOI: 10.3390/d14090727
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138690987&doi=10.3390%2Fd14090727&partnerID=40&md5=0988d760b1ec57b6ebf6af01af661667

AFFILIATIONS: University of Electronic Science and Technology of China, Chengdu, Sichuan, China; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, Sichuan, China; Sichuan Academy of Forestry, Chengdu, Sichuan, China
ABSTRACT: Picea asperata, a common tree species in the subalpine areas of Li County, Sichuan Province, China, is susceptible to Lophodermium piceae. Remote sensing has the advantages of large-scale, fast information acquisition, and low cost, which can overcome the shortcomings of ground survey. Hence, we used Landsat 8 satellite multi-spectral images and forest resource distribution data to investigate and analyze this forest disease at a large scale. Firstly, we extracted the spatial distribution information of Picea asperata and chose a temporal sequence indicator to establish a regression model and obtained a significantly negative correlation between the damage degree of plants and the change rate of normalized difference vegetation index (NDVI). Accordingly, the investigation results of the disease have good consistency with the ground survey data in spatial distribution and damage degree. On this basis, a temporal regression analysis was performed by combining the remote sensing investigation results with climate variables, and canonical correspondence analysis (CCA) was utilized in the spatial comprehensive analysis of Lophodermium piceae with terrain, soil and forest stand factors. Conclusively, this study effectively coped with the difficulties in full investigation and analysis of Lophodermium piceae in ecologically fragile subalpine areas of Western Sichuan. It is of important reference value in the early warning and monitoring of this disease, and also provides objective and reliable information support for ecological restoration and management planning in the Wenchuan earthquake-stricken areas. © 2022 by the authors.
AUTHOR KEYWORDS: large-scale investigation; Lophodermium piceae; satellite multi-spectral images; spatio-temporal analysis; subalpine area
INDEX KEYWORDS: alpine environment; disease; Landsat; remote sensing; satellite imagery; spatial distribution; spatiotemporal analysis; China; Sichuan
REFERENCES: Forest Pest and Disease, (2002); 
Bai, Xueqi, Monitoring model of Dendrolimus tabulaeformis disaster using hyperspectral remote sensing technology, Beijing Linye Daxue Xuebao/Journal of Beijing Forestry University, 38, 11, pp. 16-22, (2016); 
Wang, Lei, Reflectance features of water stressed Larix gmelinii needles, Forestry Studies in China, 11, 1, pp. 28-33, (2009); 
Xu, Zhanghua, Fisher discriminant analysis of Dendrolimus punctatus walker pest levels, Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery, 45, 6, pp. 275-283, (2014); 
Ghavidel, Marzieh, Satellite image processing of the Buxus hyrcana Pojark dieback in the Northern Forests of Iran, Journal of Forest Science, 67, 2, pp. 71-79, (2021); 
Bhattarai, Rajeev, Spruce budworm tree host species distribution and abundance mapping using multi-temporal Sentinel-1 and Sentinel-2 satellite imagery, ISPRS Journal of Photogrammetry and Remote Sensing, 172, pp. 28-40, (2021); 
Ye, Huichun, Recognition of banana Fusarium wilt based on UAV remote sensing, Remote Sensing, 12, 6, (2020); 
Greene, Anthony Daniel, Spatial Associations of Key Lepidopteran Pests with Defoliation, NDVI, and Plant Height in Soybean, Environmental Entomology, 50, 6, pp. 1378-1392, (2021); 
Oblinger, Brent W., Identifying conifer mortality induced by Armillaria root disease using airborne lidar and orthoimagery in south central Oregon, Forest Ecology and Management, 511, (2022); 
Li, Niwen, Hazards Evaluation of Dendrolimus tabulaeformis (Lepidoptera: Lasiocampidae) Based on Weighted Information Value Model, Linye Kexue/Scientia Silvae Sinicae, 55, 3, pp. 106-117, (2019)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Zhang, Y., Huang, C., Huang, C., Li, M.
AUTHOR FULL NAMES: Zhang, Youyi (37041038400); Huang, Chen (57610182200); Huang, Cheng (57208823108); Li, Mingyang (57606450100)
37041038400; 57610182200; 57208823108; 57606450100
Spatio-temporal evolution characteristics of typical debris flow sources after an earthquake
(2022) Landslides, 19 (9), pp. 2263 - 2275, Cited 9 times.
DOI: 10.1007/s10346-022-01883-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128697415&doi=10.1007%2Fs10346-022-01883-x&partnerID=40&md5=3900a8848c13d61f67b22f73233e9f04

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China; River Protection Center of Guanghan Water Resources Bureau, Deyang, China
ABSTRACT: In the 10 years since the Wenchuan earthquake on May 12, 2008, debris flow disasters have occurred many times in the areas affected by the earthquake. These debris flows are widely distributed, have strong explosive force, and pose a significant hazard. In this work, high-resolution remote sensing image interpretation of 43 gullies along the Duwen Highway over six periods was combined with field investigation and ArcGIS analysis in order to discuss spatio-temporal evolution and distribution characteristics of the source area. The main results are (i) The number, area and volume of landslides decreased rapidly in 5 years after the earthquake, and gradually slowed down after 5 years due to soil consolidation; (ii) A landslide evolution model was proposed to predict that the source of the post-earthquake landslide will return to the pre-earthquake level around 2036; and (iii) The catchment area was positively correlated with source area and attenuation rate, but source area density was negatively correlated. (iv) After the earthquake, the centroid point of the landslide source decreased from year to year. The research results reveal the spatial–temporal evolution and distribution characteristics of landslide source after earthquake, providing reference for the staging and zoning prevention of debris flow landslide in earthquake-prone regions. © 2022, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: ArcGIS; Remote sensing interpretation; Spatio-temporal evolution; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Debris; Geographic information systems; Landslides; Remote sensing; Soil mechanics; Soil moisture; Debris flows; Distribution characteristics; Evolution characteristics; Explosive force; High-resolution remote sensing images; Remote sensing image interpretations; Remote sensing interpretation; Source area; Spatiotemporal evolution; Wenchuan Earthquake; Earthquakes; debris flow; landslide; remote sensing; seismic hazard; Sichuan earthquake 2008; spatiotemporal analysis; China; Sichuan; Wenchuan
REFERENCES: Mountain Research, (2014); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Xingzhang, The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China, Journal of Mountain Science, 14, 6, pp. 1100-1112, (2017); 
Cui, Peng, Real-time observation of an active debris flow watershed in the Wenchuan Earthquake area, Geomorphology, 321, pp. 153-166, (2018); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Fan, Xuanmei, Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification, Landslides, 15, 5, pp. 967-983, (2018); 
Ge, Yonggang, Catastrophic debris flows on July 10th 2013 along the Min River in areas seriously-hit by the Wenchuan earthquake, Journal of Mountain Science, 12, 1, pp. 186-206, (2015); 
Heckerman, David E., Probabilistic interpretations for mycin's certainty factors, Machine Intelligence and Pattern Recognition, 4, C, pp. 167-196, (1986); 
Hu, Xudong, Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China, Engineering Geology, 256, pp. 57-66, (2019)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Kang, J., Wang, Z., Cheng, H., Wang, J., Liu, X.
AUTHOR FULL NAMES: Kang, Junmei (57202107365); Wang, Zhihua (57200899528); Cheng, Hongbin (57549519900); Wang, Jun (58463200400); Liu, Xiaoliang (57224109712)
57202107365; 57200899528; 57549519900; 58463200400; 57224109712
Remote Sensing Land Use Evolution in Earthquake-Stricken Regions of Wenchuan County, China
(2022) Sustainability (Switzerland), 14 (15), art. no. 9721, Cited 12 times.
DOI: 10.3390/su14159721
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137192953&doi=10.3390%2Fsu14159721&partnerID=40&md5=afc6c2a49e2d68865fb36228fb6aa20c

AFFILIATIONS: The Second Monitoring and Application Center, China Earthquake Administration, Beijing, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Earthquakes and their secondary geological disasters have a certain impact on the land cover, which leads to the degradation of the ecological environment and the stability of the ecosystem. At present, there are few studies on the spatial–temporal evolution characteristics of land-use change in earthquake-stricken regions, especially the lack of quantitative evaluation of the impact of earthquakes on land use at the micro-scale. The “5·12” Wenchuan ms8.0 earthquake caused serious damage to the surface resources in the disaster area. The study on the spatial–temporal evolution characteristics of land-use change in the disaster area can provide a reference for the remote sensing dynamic monitoring of the ecological environment. Therefore, based on geographical big data, this paper used a land-use comprehensive degree index, land-use transfer matrix, and landscape ecological index to explore and analyze the spatial–temporal evolution characteristics of land use in Wenchuan County before and after the earthquake. The results showed that the types of cropland, forest, built-up, and bare land changed greatly before and after the earthquake. During the earthquake recovery period, the comprehensive index of land use in the study area basically showed an increasing trend. Under the effect of artificial measures and natural restoration, land use was continuously improved, and vegetation was restored well. After 2008, the Patch Density (PD) and Landscape Shape Index (LSI) values of most landscape types decreased, and the Aggregation Index (AI) values increased, indicating that the ecological environment of the whole region showed a benign development in the post-earthquake period. The results not only contribute to the establishment of scientific ecological environment management in earthquake-stricken regions but also contribute to the formulation of long-term ecological environment monitoring and ecological restoration planning according to the law of land-use change. © 2022 by the authors.
AUTHOR KEYWORDS: land use; landscape pattern; remote sensing; spatial–temporal evolution; Wenchuan earthquake
REFERENCES: Marano, Kristin D., Global earthquake casualties due to secondary effects: A quantitative analysis for improving rapid loss analyses, Natural Hazards, 52, 2, pp. 319-328, (2010); 
Wang, Zifa, A preliminary report on the Great Wenchuan Earthquake, Earthquake Engineering and Engineering Vibration, 7, 2, pp. 225-234, (2008); 
Ye, Shanshan, Damages and lessons from the wenchuan earthquake in China, Human and Ecological Risk Assessment, 17, 3, pp. 598-612, (2011); 
Earthquakes Impact Community Vulnerability and Resilience, (2019); 
Hu, Kaiheng, Landslides and dammed lakes triggered by the 2017 Ms6.9 Milin earthquake in the Tsangpo gorge, Landslides, 16, 5, pp. 993-1001, (2019); 
Li, Congrong, A decadal evolution of landslides and debris flows after the Wenchuan earthquake, Geomorphology, 323, pp. 1-12, (2018); 
Xiaoliang, Meng, Distributed geospatial analysis through web processing service: A case study of earthquake disaster assessment, Journal of Software, 5, 6, pp. 671-679, (2010); 
Sun, Tianhaozhe, Trench-breaching afterslip following deeper coseismic slip of the 2012 Mw 7.6 Costa Rica earthquake constrained by near-trench pressure and land-based geodetic observations, Earth and Planetary Science Letters, 479, pp. 263-272, (2017); 
Elliott, John R., Earth Observation for the Assessment of Earthquake Hazard, Risk and Disaster Management, Surveys in Geophysics, 41, 6, pp. 1323-1354, (2020); 
Xiang, Mingshun, Dynamic monitoring and analysis of the earthquake Worst-hit area based on remote sensing, Alexandria Engineering Journal, 61, 11, pp. 8691-8702, (2022)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Zhang, X., Tang, C., Li, N., Xiong, J., Chen, M., Li, M., Tang, C.
AUTHOR FULL NAMES: Zhang, Xianzheng (57219298270); Tang, Chenxiao (55486336700); Li, Ning (57211181445); Xiong, Jiang (57217517892); Chen, Ming (57199453005); Li, Mingwei (57222871091); Tang, Chuan (35932953300)
57219298270; 55486336700; 57211181445; 57217517892; 57199453005; 57222871091; 35932953300
Investigation of the 2019 Wenchuan County debris flow disaster suggests nonuniform spatial and temporal post-seismic debris flow evolution patterns
(2022) Landslides, 19 (8), pp. 1935 - 1956, Cited 26 times.
DOI: 10.1007/s10346-022-01896-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130243169&doi=10.1007%2Fs10346-022-01896-6&partnerID=40&md5=5905119bd78f263d05124482d0f925d1

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; School of Sciences, Xihua University, Chengdu, Sichuan, China
ABSTRACT: It is widely recognized that post-seismic mass movements amplify and decay. Previous studies have found that most post-seismic mass movement is concentrated in the first few years following an earthquake. A major debris flow occurred in Wenchuan County in 2019, 11 years after the 2008 Wenchuan earthquake, showing that there might be a different temporal evolution pattern. In Wenchuan Country, the area struck by the 2019 disaster was investigated to explore whether a pattern existed. Remote sensing and field surveys investigate the initiation processes, sediment supply, and triggering rainfall. The result shows that most of the active landslides occurred in high-elevation areas where vegetation cover was lacking, and nearly half of them were reactivated landslides. The debris flows were mainly initiated by run-off erosion of debris in steep channels, and more than half of the sediment supply was from deposition along the channels in some catchments. The spatial and temporal evolution of debris flows was analyzed by combining our investigation results with historical events. More debris flows occurred in the northern part of the study area, where the relative annual rainfall and coseismic landslide density were low. The average values of debris-active catchments’ size and relief are increasing, while the average values of their coseismic landslide density and the annual rainfall received were decreasing from 2008 to 2019. Larger catchments receiving less annual rainfall tend to have a more prolonged and enhanced mass movement. © 2022, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Debris flow; Landslide; Post-seismic landslide evolution; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Debris; Disasters; Earthquakes; Rain; Remote sensing; Runoff; Annual rainfall; Debris flows; Evolution patterns; Mass movement; Post-seismic landslide evolution; Sediment supply; Seismic landslides; Seismic mass; Temporal evolution; Wenchuan Earthquake; Landslides; catchment; coseismic process; debris flow; historical record; landslide; mass movement; rainfall; sedimentation; spatiotemporal analysis; China; Sichuan; Wenchuan
REFERENCES: Barlow, John, Seismically-induced mass movements and volumetric fluxes resulting from the 2010 Mw=7.2 earthquake in the Sierra Cucapah, Mexico, Geomorphology, 230, pp. 138-145, (2015); 
Barth, Sophia, Landslide response to the 27 October 2012 earthquake (MW 7.8), southern Haida Gwaii, British Columbia, Canada, Landslides, 17, 3, pp. 517-526, (2020); 
Bontemps, Noélie, Rain and small earthquakes maintain a slow-moving landslide in a persistent critical state, Nature Communications, 11, 1, (2020); 
Development Characteristics and Risk Assessment of Debris Flow Along Yingxiu Gengda Highway in Wenchuan Earthquake Area, (2011); 
Journal of Sediment Research, (2019); 
Chen, Hongey, Relationship between earthquake disturbance, tropical rainstorms and debris movement: An overview from Taiwan, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 161-186, (2009); 
Chen, Jinnchyi, Variability of impact of earthquake on debris-flow triggering conditions: Case study of Chen-Yu-Lan watershed, Taiwan, Environmental Earth Sciences, 64, 7, pp. 1787-1794, (2011); 
Chen, Jinnchyi, Characteristics of rainfall triggering of debris flows in the Chenyulan watershed, Taiwan, Natural Hazards and Earth System Sciences, 13, 4, pp. 1015-1023, (2013); 
Chen, Xiaoqing, Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area, Engineering Geology, 194, pp. 73-85, (2015); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lin, L., Chen, G., Shi, W., Jin, J., Wu, J., Huang, F., Chong, Y., Meng, Y., Li, Y., Zhang, Y.
AUTHOR FULL NAMES: Lin, Linxin (57467478100); Chen, Guan (56468201400); Shi, Wei (57219945252); Jin, Jiacheng (57222416494); Wu, Jie (57608491200); Huang, Fengchun (57700611100); Chong, Yan (57219948200); Meng, Yang (59593059200); Li, Yajun (56602623300); Zhang, Yi (56997600500)
57467478100; 56468201400; 57219945252; 57222416494; 57608491200; 57700611100; 57219948200; 59593059200; 56602623300; 56997600500
Spatiotemporal Evolution Pattern and Driving Mechanisms of Landslides in the Wenchuan Earthquake-Affected Region: A Case Study in the Bailong River Basin, China
(2022) Remote Sensing, 14 (10), art. no. 2339, Cited 11 times.
DOI: 10.3390/rs14102339
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130340794&doi=10.3390%2Frs14102339&partnerID=40&md5=83fb1567147e76063b7a0dfcaf3219f4

AFFILIATIONS: School of Earth Sciences, Lanzhou University, Lanzhou, Gansu, China; Technology & Innovation Centre for Environmental Geology and Geohazards Prevention, Lanzhou University, Lanzhou, Gansu, China; Lanzhou University, Lanzhou, Gansu, China; College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Gansu, China; Lanzhou Country Garden School, Lanzhou, China
ABSTRACT: Understanding the spatiotemporal evolution and driving mechanisms of landslides fol-lowing a mega-earthquake at the catchment scale can lead to improved landslide hazard assessment and reduced related risk. However, little effort has been made to undertake such research in the Wenchuan earthquake-affected region, outside Sichuan Province, China. In this study, we used the Goulinping valley in the Bailong River basin in southern Gansu Province, China, as an example. By examining the multitemporal inventory, we revealed various characteristics of the spatiotemporal evolution of landslides over the past 13 years (2007–2020). We evaluated the activity of landslides using multisource remote-sensing technology, analyzed the driving mechanisms of landslides, and further quantified the contribution of landslide evolution to debris flow in the catchment. Our results indicate that the number of landslides increased by nearly six times from 2007 to 2020, and the total volume of landslides approximately doubled. The evolution of landslides in the catchment can be divided into three stages: the earthquake driving stage (2008), the coupled driving stage of earthquake and rainfall (2008–2017), and the rainfall driving stage (2017–present). Landslides in the upstream limestone area were responsive to earthquakes, while the middle–lower loess–phyllite-dominated reaches were mainly controlled by rainfall. Thus, the current landslides in the upstream region remain stable, and those in the mid-downstream are vigorous. Small landslides and mid-downstream slope erosion can rapidly provide abundant debris flow and reduce its threshold, leading to an increase in the frequency and scale of debris flow. This study lays the foundation for studying landslide mechanisms in the Bailong River basin or similar regions. It also aids in engineering management and landslide risk mitigation under seismic activity and climate change conditions. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: earthquake; evolution characteristics; landslide; rainfall; state of activity; the Bailong River basin
INDEX KEYWORDS: Catchments; Climate change; Debris; Earthquakes; Landslides; Lime; Remote sensing; Risk assessment; Rivers; Runoff; Watersheds; Debris flows; Down-stream; Driving mechanism; Earthquake; Evolution characteristics; River basins; Spatiotemporal evolution; State of activity; The bailong river basin; Wenchuan Earthquake; Rain
REFERENCES: Petley, David N., Global patterns of loss of life from landslides, Geology, 40, 10, pp. 927-930, (2012); 
Michael J. Crozier, Michael J., Deciphering the effect of climate change on landslide activity: A review, Geomorphology, 124, 3-4, pp. 260-267, (2010); 
Haque, Ubydul, The human cost of global warming: Deadly landslides and their triggers (1995–2014), Science of the Total Environment, 682, pp. 673-684, (2019); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Lin, Qigen, Spatial and temporal analysis of a fatal landslide inventory in China from 1950 to 2016, Landslides, 15, 12, pp. 2357-2372, (2018); 
Qi, Tianjun, Distribution and characteristics of large landslides in a fault zone: A case study of the NE Qinghai-Tibet Plateau, Geomorphology, 379, (2021); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Qi, Shengwen, Spatial distribution analysis of landslides triggered by 2008.5.12 Wenchuan Earthquake, China, Engineering Geology, 116, 1-2, pp. 95-108, (2010); 
Bai, Shibiao, Comparing characteristics of rainfall- and earthquake-triggered landslides in the Upper Minjiang catchment, China, Engineering Geology, 268, (2020); 
Zhong, Xiumei, Distribution rules of geo-hazards induced by Wenchuan Earthquake, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 33, SUPPL. 1, pp. 349-353, (2011)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Zheng, H., Liu, B., Han, S., Fan, X., Zou, T., Zhou, Z., Gong, H.
AUTHOR FULL NAMES: Zheng, Huangyuying (57581155400); Liu, Bin (56464425200); Han, Suyue (57215499164); Fan, Xinyue (57760733000); Zou, Tianyi (57578081300); Zhou, Zhongli (7406092969); Gong, Hao (57215502684)
57581155400; 56464425200; 57215499164; 57760733000; 57578081300; 7406092969; 57215502684
Research on landslide hazard spatial prediction models based on deep neural networks: a case study of northwest Sichuan, China
(2022) Environmental Earth Sciences, 81 (9), art. no. 258, Cited 15 times.
DOI: 10.1007/s12665-022-10369-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128467624&doi=10.1007%2Fs12665-022-10369-x&partnerID=40&md5=ba03e3b143cda82f7fed9f92faec0cb7

AFFILIATIONS: College of Management Science, Chengdu University of Technology, Chengdu, China; College of Mathematics and Physics, Chengdu University of Technology, Chengdu, China; Geomathematics Key Laboratory of Sichuan Province, Chengdu, Sichuan, China; College of Culture and Art, Chengdu University of Information Technology, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan earthquake in 2008 induced thousands of geological hazards. Among them, earthquake-induced landslides are extremely disastrous, causing considerable social and economic losses and damage to the ecology and environment. Therefore, it is of great significance to accurately predict the spatial distribution of earthquake-induced landslides. The research in this paper focuses on ten extremely earthquake-stricken areas of the Wenchuan earthquake; landslide hazard data are collected from the study areas, and the terrain information entropy, distance to rivers, distance to faults, distance to roads, lithology, normalized difference vegetation index (NDVI), peak ground acceleration (PGA) and other landslide conditioning factors are extracted. Combined with a deep neural network (DNN), a landslide hazard spatial prediction model is constructed. Through Dataset 1 and Dataset 2, which are generated randomly, the training dataset (70%) and the validation dataset (30%) are divided to verify the robustness and accuracy of the model, and the landslide susceptibility map of the study area is obtained. Moreover, considering the area under curve (AUC), the impacts of different conditioning factors on the landslide hazard prediction model are analyzed. The research results show that the DNN-based landslide hazard spatial prediction model (AUC<inf>Mean</inf> = 93.66%, Recall<inf>Mean</inf> = 85.70%) has a better prediction performance in the training step. From the validation step, the influences of various factors on the spatial prediction model of landslide hazards established in this paper (from high to low) are as follows: distance to faults, lithology, distance to rivers, PGA, terrain information entropy, NDVI, and distance to roads. The landslide hazard point data and landslide susceptibility map are highly consistent, indicating that the application of a deep learning algorithm in hazard susceptibility assessment is effective and can provide a scientific basis for landslide hazard early warning and disaster prevention and mitigation in mountainous areas prone to earthquake disasters. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: DNN; Landslide hazard; Landslide spatial prediction modeling; Wenchuan earthquake
INDEX KEYWORDS: Deep neural networks; Disaster prevention; Disasters; Faulting; Forecasting; Hazards; Landslides; Lithology; Losses; Earthquake-induced landslides; Information entropy; Landslide hazard; Landslide spatial prediction modeling; Landslide susceptibility; Normalized difference vegetation index; Peak ground acceleration; Spatial prediction modeling; Study areas; Wenchuan Earthquake; Earthquakes; algorithm; disaster management; earthquake damage; landslide; Sichuan earthquake 2008; spatial distribution; China
REFERENCES: Abuzied, Sara M., Spatial prediction of landslide-susceptible zones in El-Qaá area, Egypt, using an integrated approach based on GIS statistical analysis, Bulletin of Engineering Geology and the Environment, 78, 4, pp. 2169-2195, (2019); 
Abuzied, Sara M., Hydro-geomorphic assessment of erosion intensity and sediment yield initiated debris-flow hazards at Wadi Dahab Watershed, Egypt, Georisk, 15, 3, pp. 221-246, (2021); 
Abuzied, Sara M., Geospatial susceptibility mapping of earthquake-induced landslides in Nuweiba area, Gulf of Aqaba, Egypt, Journal of Mountain Science, 13, 7, pp. 1286-1303, (2016); 
Aditian, Aril, Comparison of GIS-based landslide susceptibility models using frequency ratio, logistic regression, and artificial neural network in a tertiary region of Ambon, Indonesia, Geomorphology, 318, pp. 101-111, (2018); 
Nanehkaran, Yaser Ahangari, Fuzzy based multiple decision method for landslide susceptibility and hazard assessment: A case study of Tabriz, Iran, Geomechanics and Engineering, 24, 5, pp. 407-418, (2021); 
Alexander, David E., Vulnerability to Landslides, pp. 175-198, (2012); 
Azarafza, Mohammad, Landslide susceptibility assessment of South Pars Special Zone, southwest Iran, Environmental Earth Sciences, 77, 24, (2018); 
Azarafza, Mohammad, Deep learning-based landslide susceptibility mapping, Scientific Reports, 11, 1, (2021); 
Tien Bui, D., Comparing the prediction performance of a Deep Learning Neural Network model with conventional machine learning models in landslide susceptibility assessment, Catena, 188, (2020); 
Chen, Zhaohua, Landslide hazard mapping using logistic regression model in Mackenzie Valley, Canada, Natural Hazards, 42, 1, pp. 75-89, (2007)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xia, J., Liu, H., Zhu, L.
AUTHOR FULL NAMES: Xia, Jun (57607453500); Liu, Hongjiang (59819039800); Zhu, Linfu (57679201700)
57607453500; 59819039800; 57679201700
Landslide Hazard Identification Based on Deep Learning and Sentinel-2 Remote Sensing Imagery
(2022) Journal of Physics: Conference Series, 2258 (1), art. no. 012031, Cited 7 times.
DOI: 10.1088/1742-6596/2258/1/012031
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129833652&doi=10.1088%2F1742-6596%2F2258%2F1%2F012031&partnerID=40&md5=03282112a8bfd2bbd9b4cb1485f65fd2

AFFILIATIONS: School of Tourism, Leshan Teachers College, Leshan, Sichuan, China
ABSTRACT: Landslide is one of the common geological disasters, which seriously threatens human life and property safety. It is particularly important to quickly identify landslide information. This paper takes the Wenchuan earthquake landslide area as the research area, and uses 7 deep learning methods(4-Layer-CNN, AlexNet, ResNet152V2, DenseNet201, InceptionV3, Xception and InceptionResNetV2) to discuss landslide detection methods based on Sentinel-2 remote sensing images. Using the marked landslide and non-landslide sample points, the Sentinel-2 remote sensing image was sliced into 80×80 pixel tiles, and then the deep learning method was used for model training, verification and testing. The results show that : (1) Among the 7 deep learning models, the F1-Score of the DenseNet201 model is the largest, reaching 0.8872, and the RMSE is the smallest 0.2503. It can be seen that the DenseNet model has a good recognition effect on landslide samples, with an accuracy of 0.9172; (2) Second It is InceptionResNetV2, the F1-Score is 0.8721, the RMSE is 0.2721, and the landslide sample recognition accuracy is 0.9012; (3) the worst effect is AlexNet, the minimum F1-Score is only 0.7263, the maximum RMSE is 0.4022, and the accuracy is 0.8295. It can be seen that the deep learning method is applied to Sentinel-2 remote sensing images for landslide image detection, and the accuracy can reach 91.72%, which can quickly and accurately identify landslide information, and improve the method reference and decision basis for disaster prevention and mitigation. © Published under licence by IOP Publishing Ltd.
INDEX KEYWORDS: Deep learning; Disaster prevention; Disasters; Earthquakes; Image enhancement; Remote sensing; F1 scores; Geological disaster; Hazard identification; Human lives; Landslide hazard; Learning methods; Property; Remote sensing imagery; Remote sensing images; Wenchuan Earthquake; Landslides
REFERENCES: Marjanović, Miloš, Landslide assessment of the starča basin (croatia) using machine learning algorithms, Acta Geotechnica Slovenica, 8, 2, pp. 45-55, (2011); 
Goetz, Jason N., Evaluating machine learning and statistical prediction techniques for landslide susceptibility modeling, Computers and Geosciences, 81, pp. 1-11, (2015); 
Krizhevsky, Alex, ImageNet classification with deep convolutional neural networks, Advances in Neural Information Processing Systems, 2, pp. 1097-1105, (2012); 
Romero, Adriana, Unsupervised deep feature extraction for remote sensing image classification, IEEE Transactions on Geoscience and Remote Sensing, 54, 3, pp. 1349-1362, (2016); 
Ullo, Silvia Liberata, Landslide Geohazard Assessment with Convolutional Neural Networks Using Sentinel-2 Imagery Data, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 9646-9649, (2019); 
Li, Chang, Valuable clues for dcnn-based landslide detection from a comparative assessment in the wenchuan earthquake area, Sensors, 21, 15, (2021); 
Gao, Xiao, Recognition and Mapping of Landslide Using a Fully Convolutional DenseNet and Influencing Factors, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, pp. 7881-7894, (2021); 
Ullo, Silvia Liberata, A New Mask R-CNN-Based Method for Improved Landslide Detection, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, pp. 3799-3810, (2021); 
Ji, Shunping, Landslide detection from an open satellite imagery and digital elevation model dataset using attention boosted convolutional neural networks, Landslides, 17, 6, pp. 1337-1352, (2020); 
Analysis of Radar Technology Identification Model for Potential Geologic Hazard Based on Convolutional Neural Network and Big Data, (2021)
PUBLISHER: Institute of Physics
CONFERENCE NAME: 2022 5th International Conference on Advanced Algorithms and Control Engineering, ICAACE 2022
CONFERENCE DATE: 2022-01-20 through 2022-01-22
CONFERENCE LOCATION: Sanya
CONFERENCE CODE: 179054
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhang, Y., Xu, Y., Li, W., Liu, R., Mu, R., Li, J., Zhang, D., Li, H., Tian, Q.
AUTHOR FULL NAMES: Zhang, Yanbo (57226259458); Xu, Yueren (35072242800); Li, Wenqiao Qiaou (52263948300); Liu, Runchao (55963454000); Mu, Ruoyu (57226607051); Li, Jiayi (58434814400); Zhang, Da (58811009600); Li, Haofeng (58781093800); Tian, Qianjian (7102891908)
57226259458; 35072242800; 52263948300; 55963454000; 57226607051; 58434814400; 58811009600; 58781093800; 7102891908
Coseismic surface rupture characteristics and earthquake damage analysis of the eastern end of the 2021 MS 7.4 Madoi (Qinghai) earthquake
(2022) Earthquake Research Advances, 2 (2), art. no. 100133, Cited 2 times.
DOI: 10.1016/j.eqrea.2022.100133
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182299798&doi=10.1016%2Fj.eqrea.2022.100133&partnerID=40&md5=e65a58e26746e6ec7b2e2d9c3eef215b

AFFILIATIONS: Key Laboratory of Earthquake Prediction, China Earthquake Administration, Beijing, China; Key Laboratory of Continental Collision and Plateau Uplift, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: At 02:04 on May 22, 2021, an M<inf>S</inf> 7.4 earthquake occurred in Madoi County in Qinghai Province, China. This earthquake is the largest seismic event in China since the 2008 M<inf>S</inf> 8.0 Wenchuan earthquake. Thus, it is critical to investigate surface deformation and damage in time to accurately understand the seismogenic structure of the Madoi earthquake and the seismogenic capacity of the blocks in this region. This study focuses on the Xuema Village, located at the eastern end of the coseismic surface ruptures produced by the event, and assesses the deformation and seismic damage in this area based on field surveys, UAV photogrammetry, and ground penetrating radar (GPR). The results indicate that the rupture scale is substantially smaller at the eastern end of the rupture zone compared to other segments. En echelon type shear tensile fractures are concentrated in a width range of 50–100 m, and the width of single fractures ranges from 20 to 30 cm. In contrast, the degree of seismic damage significantly increases at this site. All of the brick and timber houses are damaged or collapsed, while the steel frame structures and the color steel houses are slightly damaged. More than 80% of the bridge decks on the Changma River Bridge collapse, similar to the terraces along the Youerqu and Changma Rivers and the cut slopes of Provincial Highway S205. We infer that the seismogenic fault of the Madoi earthquake exerts a tail effect in this segment. The tension zone has led to a reduction at the eastern end of the rupture zone, causing shaking damage. Local topography and buildings without earthquake-resistant construction along the strike of the rupture zone have undergone different levels of seismic damage. © 2022 China Earthquake Networks Center.
AUTHOR KEYWORDS: 2021-5-22 Madoi MS 7.4 earthquake; Bayan Har Block; Coseismic surface rupture; Kunlunshankou-Jiangcuo fault; Tibetan Plateau
INDEX KEYWORDS: bridge; deformation mechanism; earthquake event; earthquake rupture; ground penetrating radar; China
REFERENCES: Deng Qi-Dong, Haiyuan strike-slip fault zone and its compressional structures of the end, Dizhen Dizhi, 11, 1, pp. 1-14, (1989); 
Science in China Series D, (2002); 
Earth Science Frontiers, (2003); 
J Geom, (2021); 
Hua, Jun, Coseismic deformation field, slip distribution and Coulomb stress disturbance of the 2021 MW7.3 Maduo earthquake using Sentinel-1 InSAR observations, Dizhen Dizhi, 43, 3, pp. 677-691, (2021); 
Geophysical and Geochemical Exploration, (2012); 
Li, Zhicai, Coseismic Deformation and Slip Distribution of 2021 Mw 7.4 Madoi Earthquake from GNSS Observation, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 46, 10, pp. 1489-1497, (2021); 
Li, Zhimin, Seismogenic fault and coseismic surface deformation of the Maduo MS7.4 earthquake in Qinghai, China: A quick report, Dizhen Dizhi, 43, 3, pp. 722-737, (2021); 
Liang, Mingjian, The relationships between neotectonic activity of the middle segment of Dari Fault and its geomorphological response, Qinghai Province, China, Dizhen Dizhi, 36, 1, pp. 28-38, (2014); 
Liang, Mingjian, Late Quaternary activity of the central segment of the Dari Fault and restudy of the surface rupture zone of the 1947 M73/4 Dari earthquake, Qinghai Province, Dizhen Dizhi, 42, 3, pp. 703-714, (2020)
PUBLISHER: KeAi Communications Co.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wu, H., Wang, M., Liu, K.
AUTHOR FULL NAMES: Wu, Han (58287313900); Wang, Ming (55732001400); Liu, Kai (56896481800)
58287313900; 55732001400; 56896481800
Condition assessment of recovery status in Wenchuan Earthquake severely-stricken areas based on night light remote sensing data 基于夜间灯光遥感数据的汶川地震重灾区恢复状态评估
(2022) Journal of Natural Disasters, 31 (2), pp. 66 - 76, Cited 2 times.
DOI: 10.13577/j.jnd.2022.0207
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85160095351&doi=10.13577%2Fj.jnd.2022.0207&partnerID=40&md5=021780ea743a28c45a4b623c94339115

AFFILIATIONS: Beijing Normal University, Beijing, China; Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: A series of unprecedented measures have been taken to restore and rebuild in China in respect of the far-reaching influence on society and economy by Wenchuan earthquake. In this paper, the recovery status of the earthquake-stricken areas was analyzed based on the corresponding light index. For cities and counties with intensity of seven degree or above, the macro recovery status was assessed. Light index data DMSP-OLS and NPP-VIIRS were integrated by fitting technology of powerful number, so as to solve the data matching problem caused by parameter difference between satellites and sensors. The validity of light index was extended, lasting from 1992 to 2012. With city size index and growth rate as the main indicators, the recovery status in Wenchuan earthquake-stricken areas was assessed. The research results proved that these cities and counties went through a three-to six-year self-adjustment period after the three-year rapid development with external assistance. The recovery phase was around 8 years in average. Among 15 severely-afflicted cities and counties, nearly 80% of them recovered the light index to the status before the earthquake in a decade. Some of them developed rapidly owing to external investment in construction, so the light index was far beyond the one before the earthquake. However, there were huge differences in the post-earthquake recovery status. The recovery status for a few cities and counties was still not optimistic in terms of light index and development indicators. © 2022 Science Press. All rights reserved.
AUTHOR KEYWORDS: data integration; DMSP-OLS and NPP-VIIRS; growth rate; urban scale index; Wenchuan earthquake
INDEX KEYWORDS: data; data processing; growth rate; light; recovery method; remote sensing; risk assessment; Sichuan earthquake 2008; VIIRS
REFERENCES: Disaster Recovery Process What We Know and do Not Know from Research, (1999); 
Reddy, Swaroop D., Factors influencing the incorporation of hazard mitigation during recovery from disaster, Natural Hazards, 22, 2, pp. 185-201, (2000); 
At Risk Natural Hazards People S Vulnerability and Disasters, (1994); 
Annual Review Natural Catastrophes 2006, (2007); 
Borjigidai, Almaz, Characteristics and impact assessement of earthquake disaster in monirity area of Southwest China, Journal of Natural Disasters, 23, 4, pp. 67-72, (2014); 
He, Chunyang, Restoring urbanization process in China in the 1990s by using non-radiance-calibrated DMSP/OLS nighttime light imagery and statistical data, Chinese Science Bulletin, 51, 13, pp. 1614-1620, (2006); 
Zhou, Yixing, China's urban economic region in the open context, Dili Xuebao/Acta Geographica Sinica, 58, 2, pp. 271-284, (2003); 
Finance Trade Economics, (2017); 
Journal of Natural Disasters, (2020); 
Li, Chang, DMSP/OLS night-time light intensity as an innovative indicator of regional sustainable development, International Journal of Remote Sensing, 40, 4, pp. 1594-1613, (2019)
PUBLISHER: Institute of Engineering Mechanics (IEM)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Su, H., Fernandez, G., Hu, X., Wu, S., Di, B., Tan, C.
AUTHOR FULL NAMES: Su, Haichuan (57562554900); Fernandez, Glenn (55906045900); Hu, Xiaoxi (57562181300); Wu, Shaolin (57215536172); Di, Baofeng (14057800700); Tan, Chunping (55881014800)
57562554900; 55906045900; 57562181300; 57215536172; 14057800700; 55881014800
Predicting Change in Adaptation Strategies of Households to Geological Hazards in the Longmenshan Area, China Using Machine Learning and GIS
(2022) Water (Switzerland), 14 (7), art. no. 1023, Cited 2 times.
DOI: 10.3390/w14071023
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127548046&doi=10.3390%2Fw14071023&partnerID=40&md5=4879cb21b9a4ba4fc74149258704a14d

AFFILIATIONS: Institute for Disaster Management and Reconstruction, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, Hong Kong; School of Emergency Management, Xihua University, Chengdu, Sichuan, China; College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Hydrological changes combined with earthquakes easily trigger secondary disasters, in-cluding geological hazards. The secondary hazard of precipitation is the main disaster type in the Longmenshan Area (China). The 2008 Wenchuan earthquake caused more than 60,000 landslides, severely affecting rural households. This study aimed to answer two questions: (1) How did households adapt to the landslide-prone post-earthquake environment? (2) How will the households’ adaptation strategies change if landslide frequency changes? Different post-disaster adaptation strategies of households in Longmenshan Town, Sichuan, China were identified through a questionnaire survey and then clustered into groups based on similarity using a K-means algorithm. Afterward, a gradient boosting decision tree (GBDT) was used to predict change in adaptation strategies if there was a change in the frequency of landslides. The results show that there are three types of landslide adaptation strategies in the study area: (1) autonomous adaptation; (2) policy-dependent adaptation; and (3) hybrid adaptation, which is a mixture of the first two types. If the frequency of landslides is increased, then around 5% of households previously under the autonomous adaptation type would be converted to policy-dependent and hybrid adaptation types. If the frequency of landslides is reduced, then around 5% of households with policy-dependent adaptation strategies would be converted to the autonomous adaptation type. This exploratory study provides a glimpse of how machine learning can be utilized to predict how adaptation strategies would be modified if hazard frequency changed. A follow-up long-term study in Longmenshan Town is needed to confirm whether the predictions are indeed correct. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: adaptation strategy; GBDT; landslide; machine learning; mountain hazards
INDEX KEYWORDS: Decision trees; Disasters; Earthquakes; Forecasting; Geographic information systems; Geology; Hazards; K-means clustering; Machine learning; Surveys; 2008 wenchuan earthquakes; Adaptation strategies; Geological hazards; Gradient boosting; Gradient boosting decision tree; Hybrid adaptation; Hydrological changes; Machine-learning; Mountain hazard; Secondary disasters; Landslides; adaptation; geological hazard; prediction; questionnaire survey; China; Longmen Mountains; Sichuan; Wenchuan
REFERENCES: Journal of Disaster Prevention and Reduction, (2021); 
Wang, Qianfeng, Temporal-spatial characteristics of severe drought events and their impact on agriculture on a global scale, Quaternary International, 349, pp. 10-21, (2014); 
Xu, Chong, Did the 2008 Wenchuan earthquake lead to a net volume loss?, pp. 191-196, (2014); 
Zhang, Shuai, Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area, Geomorphology, 276, pp. 86-103, (2017); 
Tang, Chuan, Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China, Engineering Geology, 122, 1-2, pp. 22-33, (2011); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Xu, Guobao, Regional drought shifts (1710–2010) in East Central Asia and linkages with atmospheric circulation recorded in tree-ring δ 18 O, Climate Dynamics, 52, 1-2, pp. 713-727, (2019); 
Chen, Xiaoqing, Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area, Engineering Geology, 194, pp. 73-85, (2015); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Li, N., Tang, C., Yang, T.
AUTHOR FULL NAMES: Li, Ning (57211181445); Tang, Chuan (35932953300); Yang, Tao (58761034900)
57211181445; 35932953300; 58761034900
Ten years of landslide development after the Wenchuan earthquake: a case study from Miansi town, China
(2022) Natural Hazards, 111 (3), pp. 2787 - 2808, Cited 5 times.
DOI: 10.1007/s11069-021-05157-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122900483&doi=10.1007%2Fs11069-021-05157-y&partnerID=40&md5=3499545111c0c5bbff08035a61785c97

AFFILIATIONS: School of Sciences, Xihua University, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Survey and Design Institute, Chengdu, Sichuan, China
ABSTRACT: The earthquake outbreak on 12 May 2008, in Wenchuan County caused long-term instability and frequent geological hazards on the mountain slopes in the earthquake area. Considering Miansi town in the strong earthquake area as an example, this paper analyses the development and characteristics of landslides in the 10 years after the earthquake. We collected five periods of remote sensing images in the 10 years after the earthquake, obtained the corresponding landslide distribution and activity characteristics, and then analysed the development of landslide activity over the 10 years. The total area of the landslides grew intensively from 2008 to 2014, and then the growth rate slowed down significantly after the heavy rainfall event on 10 July 2013. At the same time, the influence of slope, slope aspect, distance to a river channel, elevation, and other factors on the probability of landslides is analysed by using the distribution of the landslides. The areas that are prone to landslides, which mainly include the areas with elevations of 1700–3200 m, the areas with slopes of 30–60°, the areas with aspects of 90°–225° (with north having an aspect of 0°), and the area that are less than 200 m from a river channel, are divided according to the distribution density. © 2022, The Author(s), under exclusive licence to Springer Nature B.V.
AUTHOR KEYWORDS: Controlling factors; Debris flow; Dynamic evolution; Landslides; Wenchuan earthquake
INDEX KEYWORDS: debris flow; growth rate; landslide; remote sensing; Sichuan earthquake 2008; slope dynamics; China
REFERENCES: Brardinoni, Francesco, Representing the landslide magnitude-frequency relation: Capilano River basin, British Columbia, Earth Surface Processes and Landforms, 29, 1, pp. 115-124, (2004); 
Mountain Research, (2014); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Del Gaudio, Vincenzo, Advances and problems in understanding the seismic response of potentially unstable slopes, Engineering Geology, 122, 1-2, pp. 73-83, (2011); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Fan, Xuanmei, Two multi-temporal datasets that track the enhanced landsliding after the 2008 Wenchuan earthquake, Earth System Science Data, 11, 1, pp. 35-55, (2019); 
Galli, Mirco, Comparing landslide inventory maps, Geomorphology, 94, 3-4, pp. 268-289, (2008); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Guzzetti, Fausto, Power-law correlations of landslide areas in central Italy, Earth and Planetary Science Letters, 195, 3-4, pp. 169-183, (2002)
PUBLISHER: Springer Science and Business Media B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ai, X., Sun, B., Chen, X.
AUTHOR FULL NAMES: Ai, Xiao I. (57092489700); Sun, Baitao (13104458800); Chen, Xiangzhao (55781981000)
57092489700; 13104458800; 55781981000
Construction of small sample seismic landslide susceptibility evaluation model based on Transfer Learning: a case study of Jiuzhaigou earthquake
(2022) Bulletin of Engineering Geology and the Environment, 81 (3), art. no. 116, Cited 32 times.
DOI: 10.1007/s10064-022-02601-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125478502&doi=10.1007%2Fs10064-022-02601-6&partnerID=40&md5=b58dbcc6aa22f25a23cc17a2b1a2ebac

AFFILIATIONS: School of Architecture and Civil Engineering, Heilongjiang University of Science and Technology, Harbin, Heilongjiang, China; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: Traditional machine learning requires big data as the basis, and it is usually difficult to obtain the desired results in areas where there is a lack of data. This study proposes an innovative transfer learning method to establish a seismic landslide susceptibility evaluation model. The process is as follows: (1) a total of 13 influence factors were selected and combined with landslide points triggered by the Wenchuan and Jiuzhaigou earthquakes to form a big dataset and a small sample dataset, respectively; (2) Artificial Neural Network (ANN) was used to train the big dataset and prepare a pre-training model; (3) the Jiuzhaigou seismic landslide susceptibility evaluation model based on transfer learning was established by using the pre-training model. To reflect the advantages of the transfer learning method more intuitively, this study not only tested the accuracy of the evaluation model but also used ANN to train another evaluation model based on the small sample datasets. And the model accuracy was compared with that of the previous model. The results showed that the frequency ratio (FR) accuracy of the model obtained by transfer learning was higher than that of the model directly trained on a small sample dataset. Additionally, the area under curve (AUC) of the model directly trained on a small sample dataset was only 0.84, whereas the AUC of the model obtained by transfer learning was close to 0.90. The study shows that this method can solve the problems associated with traditional machine learning methods when establishing a seismic landslide susceptibility evaluation model. © 2022, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: ANN; Jiuzhaigou earthquake; Seismic landslide susceptibility prediction; Transfer learning; Wenchuan earthquake
INDEX KEYWORDS: Landslides; Large dataset; Machine learning; Neural networks; Evaluation models; Jiuzhaigou earthquake; Landslide susceptibility; Sample dataset; Seismic landslide susceptibility prediction; Seismic landslides; Small samples; Susceptibility evaluations; Transfer learning; Wenchuan Earthquake; Earthquakes; artificial neural network; dynamic response; earthquake event; landslide; learning; numerical model; seismic response; Sichuan earthquake 2008
REFERENCES: Aditian, Aril, Comparison of GIS-based landslide susceptibility models using frequency ratio, logistic regression, and artificial neural network in a tertiary region of Ambon, Indonesia, Geomorphology, 318, pp. 101-111, (2018); 
undefined, (2013); 
Akin, Özgenç, Site characterization using surface wave methods in the Arsin-Trabzon province, NE Turkey, Environmental Earth Sciences, 75, 1, pp. 1-17, (2016); 
Investigation of Soil Characteristics of Landscaped Areas in South Trabzon Ortahisar District by Active and Passive Surface Wave Methods, (2020); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Beven, Keith J., A physically based, variable contributing area model of basin hydrology, Hydrological Sciences Bulletin, 24, 1, pp. 43-69, (1979); 
Chang, Zhilu, Landslide susceptibility prediction based on remote sensing images and GIS: Comparisons of supervised and unsupervised machine learning models, Remote Sensing, 12, 3, (2020); 
Dhanya, J., Neural network-based hybrid ground motion prediction equations for Western Himalayas and North-Eastern India, Acta Geophysica, 68, 2, pp. 303-324, (2020); 
Computer Engineering and Design, (2018); 
Fang, Meng, Transfer learning across networks for collective classification, Proceedings - IEEE International Conference on Data Mining, ICDM, pp. 161-170, (2013)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Marino, P., Siva Subramanian, S., Fan, X., Greco, R.
AUTHOR FULL NAMES: Marino, Pasquale (57203009833); Siva Subramanian, Srikrishnan (57214766764); Fan, Xuanmei (12752112800); Greco, Roberto (7103136996)
57203009833; 57214766764; 12752112800; 7103136996
Changes in debris-flow susceptibility after the Wenchuan earthquake revealed by meteorological and hydro-meteorological thresholds
(2022) Catena, 210, art. no. 105929, Cited 28 times.
DOI: 10.1016/j.catena.2021.105929
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120691603&doi=10.1016%2Fj.catena.2021.105929&partnerID=40&md5=4ead1bd165dd0564ab945ce3f80466e4

AFFILIATIONS: Department of Engineering, Università degli Studi della Campania Luigi Vanvitelli, Naples, NA, Italy; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: After the 2008 Wenchuan earthquake (M<inf>w</inf> 7.9), an increase in rainfall-induced debris flows was initially observed in the earthquake-hit region (Sichuan, China). In the following years, the frequency of debris flows gradually reduced, indicating a recovery of stability of debris deposits originated from the earthquake. To assess these dynamically changing conditions, empirical thresholds have been identified to predict post-seismic debris flow occurrences with two approaches: a meteorological approach based only on precipitation characteristics, and a hydrometeorological approach that also considers the hydrologic conditions before the onset of rainfall. Both used the available record of precipitations and debris flows that occurred in the years 2008–2015 in Wenchuan county. Hydrometeorological thresholds for debris flows have been identified at the catchment scale by assessing the water balance with a simplified lumped hydrological model, based on the Budyko framework, and using catchment water storage as a proxy of the moisture state of the slopes. The results indicate that both meteorological and hydrometeorological thresholds allow catching the progressive recovery of stability of the debris deposits. In particular, the assessment of water balance at the catchment scale highlights the role played by the hydrological processes affecting the slopes, leading to the definition of reliable and robust thresholds. The hydrometeorological approach is thus recommended to define thresholds for early warning of debris flows at the catchment scale. © 2021 Elsevier B.V.
AUTHOR KEYWORDS: Budyko framework; Catchment water balance; Hydro-meteorological thresholds; Post-seismic debris flows; Triggering mechanism; Wenchuan earthquake
INDEX KEYWORDS: catchment; debris flow; earthquake; meteorological hazard; threshold; water budget; water storage; China; Sichuan; Wenchuan
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Bai, Peng, Estimation of the Budyko model parameter for small basins in China, Hydrological Processes, 34, 1, pp. 125-138, (2020); 
Bogaard, T. A., Invited perspectives: Hydrological perspectives on precipitation intensity-duration thresholds for landslide initiation: Proposing hydro-meteorological thresholds, Natural Hazards and Earth System Sciences, 18, 1, pp. 31-39, (2018); 
Bogaard, T. A., Landslide hydrology: from hydrology to pore pressure, Wiley Interdisciplinary Reviews: Water, 3, 3, pp. 439-459, (2016); 
Soviet Geography, (1961); 
Chang, Kuo Jen, Post-seismic surface processes in the Jiufengershan landslide area, 1999 Chi-Chi earthquake epicentral zone, Taiwan, Engineering Geology, 86, 2-3, pp. 102-117, (2006); 
Procedia Earth and Planetary Science, (2016); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Xianghui, Impacts of forest changes on hydrology: A case study of large watersheds in the upper reaches of Minjiang River watershed in China, Hydrology and Earth System Sciences, 16, 11, pp. 4279-4290, (2012); 
Dai, Lanxin, Coseismic Debris Remains in the Orogen Despite a Decade of Enhanced Landsliding, Geophysical Research Letters, 48, 19, (2021)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Feng, Q., Tang, C., Chen, M., Gong, L.
AUTHOR FULL NAMES: Feng, Qiang (57225221384); Tang, Chuan (35932953300); Chen, Ming (57199453005); Gong, Lingfeng (57215612725)
57225221384; 35932953300; 57199453005; 57215612725
Field Investigation and Research on Debris Flow on August 20，2019 in Mianshi Town，Epicenter of Wenchuan Earthquake 汶 川 震 区 绵 虒 镇“8·20”登 溪 沟 泥 石 流 灾 害 调 查 与分 析
(2022) Journal of Disaster Prevention and Mitigation Engineering, 42 (1), pp. 51 - 59, Cited 3 times.
DOI: 10.13409/j.cnki.jdpme.20210220002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187117586&doi=10.13409%2Fj.cnki.jdpme.20210220002&partnerID=40&md5=ce37a55e9f45c774575e49efc01d4402

AFFILIATIONS: Chengdu University of Technology, Chengdu, China
ABSTRACT: On August 20，2019，a large debris flow occurred in Dengxi valley，Miansi Town，Wenchuan County.As a result，a large number of houses，national highways and expressways were washed out at the mouth of the ditch，and traffic was interrupted for months. At the same time，a large amount of material rushed out blocked the main channel of Minjiang River，causing the channel of Minjiang River to be diverted to the left bank and the water level to rise，forming a chain disaster. Based on the formation conditions，disaster-causing characteristics of the debris flow in Dengxi valley，as well as the field investigation and remote sensing image interpretation before and after the debris flow event，the bulk density and dynamic characteristics of the debris flow，such as velocity，discharge and debris flow outflow，were calculated by using the weight method and morphological investigation method The results show that the Dengxi valley debris flow is the result of the combined action of many factors，such as short duration heavy rainfall，favorable topographic conditions，abundant provenance produced by earthquake and strong erosion of the channel. The disaster pattern is summarized as a movement process as follows ：rapid confluence of rainfall-initiation-formation of debris flow by materials of the vally-erosion of materials at the bottom and both sides of the gully-collapse of bank slope and blockage and outburst- the scale of the debris flow becomes large and rushed out. The image interpretation before and after the debris flow event showed that the provenance of slope and channel evolved significantly with time，and the provenance in the basin was still rich.The activity of debris flow is still high in the Wenchuan earthquake area ten years after the earthquake. Although more than 10 years have passed since the Wenchuan earthquake，the activity of debris flow is still relatively high. Therefore，the detailed investigation and analysis of the debris flow activity in Dengxi valley are carried out in order to strengthen the further understanding of the characteristics of debris flow in the medium and long term after the earthquake in the strong earthquake area. © 2022 Editorial Office of Journal of Disaster Prevention and Mitigation Engineering. All rights reserved.
AUTHOR KEYWORDS: debris flow; Dengxi gulley; development trend; formation condition; infestation characteristics
REFERENCES: Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Journal of Geological Hazards and Environment Preservation, (2009); 
Tang, Chuan, Field investigation and research on giant debris flow on August 14, 2010 in Yingxiu town, epicenter of Wenchuan earthquake, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36, 1, pp. 172-180, (2011); 
Journal of Water Resources and Water Engineering, (2017); 
Resources and Power, (2015); 
undefined, (2019); 
Journal of Engineering Geology, (2013); 
Journal of Disaster Prevention and Mitigation Engineering, (2004); 
Geoscience, (2018); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008)
PUBLISHER: Editorial Office of Journal of Disaster Prevention and Mitigation Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, L., Shi, Y., Cheng, S.
AUTHOR FULL NAMES: Li, Linfang (57413259100); Shi, Yaolin (57205084813); Cheng, Shu (57219796870)
57413259100; 57205084813; 57219796870
Exploration of long short-term memory neural network in intermediate earthquake forecast: a case study in Sichuan-Yunnan region 长短时记忆神经网络在中期地震预报中的探索-以川滇地区为例
(2022) Acta Geophysica Sinica, 65 (1), pp. 12 - 25, Cited 14 times.
DOI: 10.6038/cjg2022P0086
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116891495&doi=10.6038%2Fcjg2022P0086&partnerID=40&md5=74c569d0ef86e6176a7a44ea852b5d9e

AFFILIATIONS: Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: It is a very challenging scientific problem to use machine learning methods to mine the big data of seismic activity, identify some anomalies that were not recognized in the past, and improve the accuracy of earthquake prediction. In this paper, based on the earthquake catalog in part of Sichuan and Yunnan (24°N-32°N, 98°E-106°E), 16 seismicity indicators reflecting the spatial and temporal intensity distribution characteristics of earthquakes were input by using the sliding spatio-temporal window, and long short-term memory (LSTM) neural network was established to predict the maximum earthquake magnitude in the next year in 9 subareas of the study area. Two different training test models, training set: test set =8: 2 and training set: test set =7: 3, are set up to retrospectively forecast past earthquakes. The results show that the training set: test set =7: 3 model can learn from the earthquake catalog from January 1970 to September 2004, and the 2008 Wenchuan earthquake can be predicted retroactively. The training set: test set =8: 2 model was trained by using the data from January 1970 to May 2009. The R score of retrospective prediction of earthquakes above M6 from 2010 to 2019 is 0.407, and the accuracy of retrospective prediction of earthquakes above M7 is as high as 92.31%.This paper also provides an exploratory forecast: the western, central, eastern, and southwestern part of the study area will have a potential risk of earthquakes of magnitude 5.1~5.3 before February 2022. © 2022, Science Press. All right reserved.
AUTHOR KEYWORDS: Intermediate earthquake forecast; Long short-term memory neural network; R value; Seismic indicator; Sichuan-Yunnan region
INDEX KEYWORDS: Brain; Earthquakes; Forecasting; Learning systems; Testing; Earthquake catalogs; Earthquake forecast; Intermediate earthquake forecast; Long short-term memory neural network; Neural-networks; R value; Seismic indicator; Sichuan-Yunnan region; Test sets; Training sets; Long short-term memory; accuracy assessment; artificial neural network; earthquake catalogue; earthquake magnitude; machine learning; prediction; spatial distribution; temporal distribution; China; Sichuan; Wenchuan; Yunnan
REFERENCES: Adeli, Hojjat, A probabilistic neural network for earthquake magnitude prediction, Neural Networks, 22, 7, pp. 1018-1024, (2009); 
Asencio-Cortés, Gualberto, Earthquake prediction in California using regression algorithms and cloud-based big data infrastructure, Computers and Geosciences, 115, pp. 198-210, (2018); 
Asim, Khawaja Muhammad, Earthquake magnitude prediction in Hindukush region using machine learning techniques, Natural Hazards, 85, 1, pp. 471-486, (2017); 
Asim, Khawaja Muhammad, Earthquake prediction model using support vector regressor and hybrid neural networks, PLOS ONE, 13, 7, (2018); 
Sci China Ser D Earth Sci, (2009); 
Cheng, Jia, A new prediction model of seismic hazard for the Sichuan-Yunnan region based on the occurrence rate of large earthquakes, Acta Geophysica Sinica, 63, 3, pp. 1170-1182, (2020); 
Cheng, Shu, Machine learning for predicting discharge fluctuation of a karst spring in North China, Acta Geophysica, 69, 1, pp. 257-270, (2021); 
Field, Edward H., Overview of the working group for the development of Regional Earthquake Likelihood Models (RELM), Seismological Research Letters, 78, 1, pp. 7-16, (2007); 
Fischer, Thomas Günter, Deep learning with long short-term memory networks for financial market predictions, European Journal of Operational Research, 270, 2, pp. 654-669, (2018); 
Florido, E., A novel tree-based algorithm to discover seismic patterns in earthquake catalogs, Computers and Geosciences, 115, pp. 96-104, (2018)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhao, Z., Xu, T., Min, J., Zhang, Q., Li, W., He, C.
AUTHOR FULL NAMES: Zhao, Zhongyu (58121985800); Xu, Tao (58122133800); Min, Jie (58122282800); Zhang, Qingsong (58121985900); Li, Weile (25936551300); He, Chaoyang (36918503300)
58121985800; 58122133800; 58122282800; 58121985900; 25936551300; 36918503300
Multi-temporal Remote Sensing Analysis of Landslide Evolution around the Yingxiu Hydropower Station after the 2008 Wenchuan Earthquake, in Sichuan Province, Southwest China
(2022), pp. 495 - 498, Cited 0 times.
DOI: 10.1109/IFEEA57288.2022.10038022
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149144078&doi=10.1109%2FIFEEA57288.2022.10038022&partnerID=40&md5=c057dd7f5eb79f96451c4baec0c1b5c1

AFFILIATIONS: State Grid Sichuan Yingxiuwan Power Plant, Dujiangyan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Yingxiu Hydropower Station is located in the epicentre area of the 2008 Wenchuan Ms 8.0 Earthquake. The Wenchuan earthquake triggered a lot of co-seismic landslides around the power station, resulting in a significant increase in the number and scale of landslides post the earthquake. The evolution of landslides around Yingxiu Hydropower Station after the Wenchuan earthquake is studied by using the high-resolution remote sensing images from 2004 to 2020. The landslide activity post the earthquake declined gradually. The first 5 years post the earthquake is the strongest activity period. Large scale landslides and debris flows occurred in 2010 and 2013, respectively. The landslide activity decreased significantly since 2014, and only small landslide occurred from 2014 to 2020. There are still a large number of loose solid materials in the gullies and on the slopes. In the future, under the effect of heavy rainfall, there is still the possibility of large-scale debris flow disasters, and monitoring should be strengthened. © 2022 IEEE.
AUTHOR KEYWORDS: landslide evolution; remote sensing; Wenchuan earthquake; Yingxiu Hydropower Station
INDEX KEYWORDS: Debris; Earthquakes; Hydroelectric power; Hydroelectric power plants; Landslides; Rain; 2008 wenchuan earthquakes; Debris flows; Hydropower stations; Landslide evolution; Multi-temporal remote sensing; Remote sensing analysis; Remote-sensing; Sichuan province; Wenchuan Earthquake; Yingxiu hydropower station; Remote sensing
REFERENCES: Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Harp, Edwin L., Landslides triggered by the 1994 Northridge, California, earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S319-S332, (1996); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011); 
Tang, Chuan, Catastrophic debris flows on 13 August 2010 in the Qingping area, southwestern China: The combined effects of a strong earthquake and subsequent rainstorms, Geomorphology, 139-140, pp. 559-576, (2012); 
Xu, Qiang, The 13 August 2010 catastrophic debris flows after the 2008 Wenchuan earthquake, China, Natural Hazards and Earth System Sciences, 12, 1, pp. 201-216, (2012); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014); 
Tang, Chenxiao, Analysing post-earthquake landslide activity using multi-temporal landslide inventories near the epicentral area of the 2008 Wenchuan earthquake, Natural Hazards and Earth System Sciences, 16, 12, pp. 2641-2655, (2016)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: IEEE
CONFERENCE NAME: 9th International Forum on Electrical Engineering and Automation, IFEEA 2022
CONFERENCE DATE: 2022-11-04 through 2022-11-06
CONFERENCE LOCATION: Virtual, Online
CONFERENCE CODE: 186667
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, J., Dong, F., Li, Z.
AUTHOR FULL NAMES: Liu, Jinglei (57825980000); Dong, Fangfang (57826319800); Li, Zhiyao (57826319900)
57825980000; 57826319800; 57826319900
Application of Convolutional Neural Network to GIS and Physics
(2022) Computational Intelligence and Neuroscience, 2022, art. no. 8559343, Cited 3 times.
DOI: 10.1155/2022/8559343
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135217101&doi=10.1155%2F2022%2F8559343&partnerID=40&md5=3bf1acd4ed135b8a81805bbfcce65acf

AFFILIATIONS: Changwang College, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China; Physical Group, Yancheng Tinghu Senior High School, Yancheng, Jiangsu, China; School of Electronic Engineering, Nanjing Xiaozhuang College, Nanjing, Jiangsu, China
ABSTRACT: Human life and property are often seriously threatened and lost due to natural disasters such as earthquakes. As a spatial information system, the geographic information system (GIS) can collect, store, and manage the local or whole related physical data of the surface space to be measured with the support of software and hardware. The physical data is collected through GIS for performance testing. The data are collected from the aftershock event records of the Wenchuan earthquake. Among them, 14,000 Wenchuan earthquake events are used as the original data set, and 8,800 aftershock events are used as the test data set. Seismic data involves the detection of multiple physical quantities, which makes the seismic data gradually increase, many data have no obvious linear relationship, and traditional detection methods are difficult to meet the detection requirements. The artificial intelligence method led by a convolutional neural network (CNN) can perform pattern matching on complex nonlinear variables, and models with general characteristics can be generated from different seismic waveforms for the prediction of seismic waveforms. The results show that GIS can effectively intercept and collect seismic physical signals. The training and detection accuracy of CNN combined with GIS physical data is higher than 90%. Compared with traditional training methods, CNN is obviously superior in detection accuracy and recall rate. At the same time, a large number of microseismic events that are easily missed by manual selection can also be found. © 2022 Jinglei Liu et al.
INDEX KEYWORDS: Convolution; Disasters; Earthquakes; Information management; Information systems; Information use; Pattern matching; Seismic waves; Statistical tests; Convolutional neural network; Data set; Detection accuracy; Human lives; Natural disasters; Physical data; Property; Seismic datas; Seismic waveforms; Wenchuan Earthquake; Geographic information systems; artificial intelligence; earthquake; geographic information system; human; physics; Artificial Intelligence; Geographic Information Systems; Humans; Neural Networks, Computer; Physics
REFERENCES: Emerging Infectious Disease Journal Cdc, (2017); 
Barkat, Adnan, Thermal IR satellite data application for earthquake research in Pakistan, Journal of Geodynamics, 116, pp. 13-22, (2018); 
Biagi, Pier Francesco, The European VLF/LF radio network to search for earthquake precursors: Setting up and natural/man-made disturbances, Natural Hazards and Earth System Sciences, 11, 2, pp. 333-341, (2011); 
Kossobokov, Vladimir G., Testing an Earthquake Prediction Algorithm: The 2016 New Zealand and Chile Earthquakes, Pure and Applied Geophysics, 174, 5, pp. 1845-1854, (2017); 
Grossi, Luigi, The impact of the German response to the Fukushima earthquake, Energy Economics, 66, pp. 450-465, (2017); 
Yeck, W. L., Oklahoma experiences largest earthquake during ongoing regional wastewater injection hazard mitigation efforts, Geophysical Research Letters, 44, 2, pp. 711-717, (2017); 
Widiaty, I., Geographic information system of batik jawa barat: Cultural and industrial mapping for supporting the development of curriculum in vocational high schools, Journal of Engineering Science and Technology, 13, 7, pp. 1979-1991, (2018); 
Heidary-Dahooie, Jalil, A Hybrid Multi-Criteria-Decision-Making Aggregation Method and Geographic Information System for Selecting Optimal Solar Power Plants in Iran, Energies, 15, 8, (2022); 
Journal of Applied Geospatial Information, (2021); 
Zhou, Junling, Image simulation of urban landscape in coastal areas based on geographic information system and machine learning, Neural Computing and Applications, 34, 12, pp. 9397-9411, (2022)
PUBLISHER: Hindawi Limited
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS; HYBRID GOLD OPEN ACCESS

Xia, J., Liu, H., Zhu, L.
AUTHOR FULL NAMES: Xia, Jun (57607453500); Liu, Hongjiang (59819039800); Zhu, Linfu (57679201700)
57607453500; 59819039800; 57679201700
Landslide Detection Based on Deep Learning and Google Earth Imagery
(2022) Proceedings of SPIE - The International Society for Optical Engineering, 12285, art. no. 122850J, Cited 0 times.
DOI: 10.1117/12.2637088
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134295511&doi=10.1117%2F12.2637088&partnerID=40&md5=86e6ff154c78dd784c1f6d566de00cac

AFFILIATIONS: School of Tourism, Leshan Teachers College, Leshan, Sichuan, China
ABSTRACT: Landslide geological disasters have seriously threatened human life and property safety. This paper takes the Wenchuan earthquake landslide as the research object, and uses five deep learning models (LeNet5, AlexNet, VGG16, ResNet152V2 and DenseNet201) to explore the landslide detection method based on high-resolution Google Earth images, select the optimal model, and then use Google Earth to detect landslides. The images are cropped into image samples of 4 different sizes (60×60, 120×120, 180×180 and 240×240 Pixel), and the dataset is then trained, validated and tested using the optimal model. The results show that: (1) Among the five deep learning models, the DenseNet201 model is the best, the F1-Score is the largest, reaching 0.8878, and the RMSE is the smallest 0.2524; (2) In the Google Earth image sample datasets of four different sizes, the DenseNet201 deep learning model is used to analyze the landslide images. For detection, the F1-Score can reach 0.8995, the RMSE can reach 0.2486, and the Accuracy can reach 0.9308. It can be seen that based on high-resolution Google Earth images, the deep learning method can quickly and accurately detect landslide information, providing a method reference for the prevention and control of landslide geological hazards. © 2022 SPIE.
AUTHOR KEYWORDS: deep learning; google earth imagery; landslide
INDEX KEYWORDS: Deep learning; Earthquakes; Geology; Learning systems; Remote sensing; Different sizes; Earth images; F1 scores; Google earth imagery; Google earths; High resolution; Landslide detection; Learning models; Optimal model; Landslides
REFERENCES: Marjanović, Miloš, Landslide assessment of the starča basin (croatia) using machine learning algorithms, Acta Geotechnica Slovenica, 8, 2, pp. 45-55, (2011); 
Goetz, Jason N., Evaluating machine learning and statistical prediction techniques for landslide susceptibility modeling, Computers and Geosciences, 81, pp. 1-11, (2015); 
Meghanadh, Devara, AUTOMATIC DETECTION OF LANDSLIDES BASED ON MACHINE LEARNING FRAMEWORK, International Geoscience and Remote Sensing Symposium (IGARSS), 2021-July, pp. 8460-8463, (2021); 
Yao, Guangle, An Empirical Study of the Convolution Neural Networks Based Detection on Object with Ambiguous Boundary in Remote Sensing Imagery-A Case of Potential Loess Landslide, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15, pp. 323-338, (2022); 
Tanatipuknon, Asadang, Study on combining two faster r-cnn models for landslide detection with a classification decision tree to improve the detection performance, Journal of Disaster Research, 16, 4, pp. 588-595, (2021); 
Wang, Yi, Comparison of convolutional neural networks for landslide susceptibility mapping in Yanshan County, China, Science of the Total Environment, 666, pp. 975-993, (2019); 
Ecotrophic, (2019); 
Mohan, Amrita, Review on remote sensing methods for landslide detection using machine and deep learning, Transactions on Emerging Telecommunications Technologies, 32, 7, (2021); 
Liu, Tong, Landslide Detection Mapping Employing CNN, ResNet, and DenseNet in the Three Gorges Reservoir, China, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, pp. 11417-11428, (2021); 
Ji, Shunping, Landslide detection from an open satellite imagery and digital elevation model dataset using attention boosted convolutional neural networks, Landslides, 17, 6, pp. 1337-1352, (2020)
PUBLISHER: SPIE
SPONSORS: Academic Exchange Information Center (AEIC)
CONFERENCE NAME: 2022 International Conference on Advanced Algorithms and Neural Networks, AANN 2022
CONFERENCE DATE: 2022-02-25 through 2022-02-27
CONFERENCE LOCATION: Zhuhai
CONFERENCE CODE: 180686
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Lin, J.-W.
AUTHOR FULL NAMES: Lin, Jyh Woei (35435351700)
35435351700
An adaptive Butterworth spectral-based graph neural network for detecting ionospheric total electron content precursor prior to the Wenchuan earthquake on 12 May 2008
(2022) Geocarto International, 37 (26), pp. 14292 - 14308, Cited 3 times.
DOI: 10.1080/10106049.2022.2087752
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132120575&doi=10.1080%2F10106049.2022.2087752&partnerID=40&md5=b770ba3a369ebc8c6d6f7294db69d82d

AFFILIATIONS: School of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China; Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
ABSTRACT: In this study, Global Ionosphere Maps (GIMs) were used to detect all total electron content (TEC) precursors prior to the M <inf>w</inf> 7.9 Wenchuan earthquake at 06:28:01 (UTC) on 12 May 2008. The GIMs were converted into GIM-gis between 00.00 (UTC) on 01 December 2004 and 31 March 2005 and were used to build the Spectral-Based Graph Neural Network (SB-GNN) and Adaptive Butterworth Spectral-Based Graph Neural Network (ABSB-GNN) models. A blurred TEC precursor was detected at 2:20 (UTC) on 9 May 2008, i.e. 3 days prior to the Wenchuan earthquake, using the ABSB-GNN model in place of the SB-GNN model, which improved predictive ability. After evaluating the variance in the learning process, the two models were verified for stability with better training and predicted accuracies in the ABSB-GNN model, which might be the reason that a blurred TEC precursor was detectable using the ABSB-GNN model. © 2022 Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: adaptive Butterworth spectral-based graph neural network; GIM-gis; Global ionosphere maps; spectral-based graph neural network; total electron content precursors; Wenchuan earthquake
INDEX KEYWORDS: artificial neural network; ionosphere; learning; Sichuan earthquake 2008; spectral analysis; total electron content; training
REFERENCES: Ahmedt-Aristizábal, David, Graph-based deep learning for medical diagnosis and analysis: Past, present and future, Sensors, 21, 14, (2021); 
Aji, Bernadus Anggo Seno, Detection precursor of sumatra earthquake based on ionospheric total electron content anomalies using N-Model Articial Neural Network, 2018-January, pp. 269-276, (2017); 
Akyol, Ali Alp, A Machine Learning-Based Detection of Earthquake Precursors Using Ionospheric Data, Radio Science, 55, 11, (2020); 
Al-Ameen, Zohair, Improving the Sharpness of Digital Image Using an Amended Unsharp Mask Filter, International Journal of Image, Graphics and Signal Processing, 11, 3, pp. 1-9, (2019); 
Proceedings of the 2nd ESA Workshop on Satellite Navigation User Equipment Technologies, (2004); 
Belkin, Mikhail, Reconciling modern machine-learning practice and the classical bias–variance trade-off, Proceedings of the National Academy of Sciences of the United States of America, 116, 32, pp. 15849-15854, (2019); 
Theory of Graphs and Its Applications, (1962); 
Bernhardt, Chris, Vertex maps on graphs-trace theorems, Fixed Point Theory and Algorithms for Sciences and Engineering, 2011, (2011); 
Borovsky, Joseph E., Is the Dst Index Sufficient to Define All Geospace Storms?, Journal of Geophysical Research: Space Physics, 122, 11, pp. 11-547, (2017); 
Brum, Diego, A proposed earthquake warning system based on ionospheric anomalies derived from gnss measurements and artificial neural networks, International Geoscience and Remote Sensing Symposium (IGARSS), 2019-January, pp. 9295-9298, (2019)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, G., Huang, H., Chen, N., Somos-Valenzuela, M., Yang, Z., He, J.
AUTHOR FULL NAMES: Hu, Guisheng (35113314000); Huang, Hong (57374787900); Chen, Ningsheng (8726157200); Somos-Valenzuela, Marcelo A. (55644084400); Yang, Zhiquan (56171368600); He, Jie (55233337200)
35113314000; 57374787900; 8726157200; 55644084400; 56171368600; 55233337200
Largest scale successful real-time evacuation after the Wenchuan earthquake in China: lessons learned from the Zengda gully giant debris flow disaster
(2022) Geomatics, Natural Hazards and Risk, 13 (1), pp. 19 - 34, Cited 3 times.
DOI: 10.1080/19475705.2021.2000045
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121309947&doi=10.1080%2F19475705.2021.2000045&partnerID=40&md5=eb544e2bd6ba23eeabc3e772b1af4e22

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Academy of Plateau Science and Sustainability, Xining, China; University of Chinese Academy of Sciences, Beijing, China; Department of Forest Sciences, Universidad de la Frontera, Temuco, AR, Chile; Butamallin Research Center for Global Change, Universidad de la Frontera, Temuco, AR, Chile; Kunming University of Science and Technology, Kunming, Yunnan, China; College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China
ABSTRACT: A catastrophic debris flow occurred in the Zengda gully, a branch of the Dajinchuan River in Zengda town, Jinchuan County, Sichuan Province, China. The successful implementation of a real-time evacuation avoided 820 casualties for people living in 200 settlements. This was the largest-scale successful real-time evacuation for a debris flow disaster after the Wenchuan earthquake in China. In order to better reveal the causes of the successful real-time evacuation process of the giant debris flow disaster, the characteristics, formation and movement process of the debris flow were studied using multi-temporal remote sensing images, field investigation, laboratory analysis, and empirical formula calculations. It was found that the successful real-time evacuation was possible because of a well-executed monitoring system, timely release of early warning information, a highly effective operation disaster prevention system, and decisive and advanced avoidance. It also transferred strategies through in-depth analysis of several important stages in the real-time evacuation process. Finally, an exemplary mode of community-based warning is proposed based on the Zengda gully giant debris flow disaster real-time evacuation. Specifically, the mode was led by government, implemented by local residents and proceeded with the guidance by experts in the field. The experience and effective risk avoidance mode presented in this paper can be shared and employed by other countries or regions at serious risk for debris flow disasters. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: dynamic characteristics; early warning mode; formation and movement process; real-time evacuation; Zengda gully debris flow
INDEX KEYWORDS: Debris; Disaster prevention; Earthquakes; Landforms; Remote sensing; Debris flows; Dynamics characteristic; Early warning; Early warning mode; Formation and movement process; Large-scales; Real- time; Real-time evacuation; Warning modes; Zengdum gully debris flow; Disasters
REFERENCES: Borga, Marco, Hazard assessment and forecasting of landslides and debris flows: A case study in Northern Italy, pp. 343-367, (2019); 
Emergency Investigation Report of the Giant Boli Landslide Disasters in Jinchuan County Sichuan Province, (2019); 
Chen, Mingliang, Contribution of excessive supply of solid material to a runoff-generated debris flow during its routing along a gully and its impact on the Downstream Village with Blockage Effects, Water (Switzerland), 11, 1, (2019); 
Chen, Zhi, Formation analysis and characteristic estimation of the debris flow disaster of Mengdong River, Malipo County on September 2nd, 2018, IOP Conference Series: Earth and Environmental Science, 310, 5, (2019); 
Cheng, Deqiang, The characteristics of the Mocoa compound disaster event, Colombia, Landslides, 15, 6, pp. 1223-1232, (2018); 
Chen, Ningsheng, Effectiveness analysis of the prediction of regional debris flow susceptibility in post-earthquake and drought site, Journal of Mountain Science, 17, 2, pp. 329-339, (2020); 
Deng, Mingfeng, Debris flow amplification in a moraine terrace and related engineering measures in the Zongzhai valley, southeastern Tibetan plateau, Geomatics, Natural Hazards and Risk, 9, 1, pp. 1230-1248, (2018); 
Hu, Guisheng, Real-time evacuation and failure mechanism of a giant soil landslide on 19 July 2018 in Yanyuan County, Sichuan Province, China, Landslides, 16, 6, pp. 1177-1187, (2019); 
Hu, Guisheng, An effectiveness evaluation method for debris flow control engineering for cascading hydropower stations along the Jinsha River, China, Engineering Geology, 266, (2020); 
Mountain Research, (2020)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Xiong, J., Tang, C., Gong, L., Chen, M., Li, N., Shi, Q., Zhang, X., Chang, M., Li, M.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Tang, Chuan (35932953300); Gong, Lingfeng (57215612725); Chen, Ming (57199453005); Li, Ning (57211181445); Shi, Qingyun (57217257328); Zhang, Xianzheng (57219298270); Chang, Ming (36727157900); Li, Mingwei (57222871091)
57217517892; 35932953300; 57215612725; 57199453005; 57211181445; 57217257328; 57219298270; 36727157900; 57222871091
How landslide sediments are transferred out of an alpine basin: Evidence from the epicentre of the Wenchuan earthquake
(2022) Catena, 208, art. no. 105781, Cited 28 times.
DOI: 10.1016/j.catena.2021.105781
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116932777&doi=10.1016%2Fj.catena.2021.105781&partnerID=40&md5=23f2441cf8b314f8d9f6ed5dceb4ca44

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Geological Survey, Beijing, Beijing, China; School of Sciences, Xihua University, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan earthquake and subsequent strong rainfall triggered extensive mass wasting, which caused sufficient landslide sediment to be continuously transferred out of the alpine basin. Effective sediment management in earthquake areas requires a full understanding of how landslide sediment is transferred out of alpine basins. In this study, field investigations and remote sensing interpretations indicated that the bedrock or hillslope surface materials were transferred downstream of the hillslope through falls, slides, fall slides, slide falls, and slide flows. Subsequently, field investigations and box model tests showed that the loose landslide sediment was transferred to the channel mainly through three typical processes (erosion driven by torrents or debris flow, saturation, and surface runoff), which occurred simultaneously in the first several years after the Wenchuan earthquake. However, surface runoff erosion was the main transfer process in the following period. Using the number and area of effective landslides, the length and area of landslide sediment in channels, and the effective basin as indicators, we present observational evidence of the landslide sediment transport process based on a remote sensing image time series from 2005 to 2018. The trends of the indicators suggested that the sediment transfer process in the alpine basin was intense during the first 5 years after the Wenchuan earthquake; then, it gradually weakened without the influence of extreme rainfall, but it may last 20 years or longer before returning to the pre-earthquake level. © 2021 Elsevier B.V.
AUTHOR KEYWORDS: Alpine basin; Landslide sediment; Transfer process; Wenchuan earthquake
INDEX KEYWORDS: hillslope; landslide; mass wasting; remote sensing; runoff; sediment transport; Sichuan earthquake 2008
REFERENCES: Baynes, Edwin R.C., Fluvial evacuation of landslide material from bedrock-confined channels under controlled experimental conditions, Geomorphology, 368, (2020); 
Campforts, Benjamin, HyLands 1.0: A hybrid landscape evolution model to simulate the impact of landslides and landslide-derived sediment on landscape evolution, Geoscientific Model Development, 13, 9, pp. 3863-3886, (2020); 
Chang, Ming, Evolution process of sediment supply for debris flow occurrence in the Longchi area of Dujiangyan City after the Wenchuan earthquake, Landslides, 12, 3, pp. 611-623, (2015); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Ming, Temporal and spatial differentiation in the surface recovery of post-seismic landslides in Wenchuan earthquake-affected areas, Ecological Informatics, 64, (2021); 
Chen, Yuechao, Research of impacts of the 2018 Hokkaido eastern Iburi earthquake on sediment transport in the Atsuma river basin using the SWAT model, Water (Switzerland), 13, 3, (2021); 
Croissant, Thomas, Seismic cycles, earthquakes, landslides and sediment fluxes: Linking tectonics to surface processes using a reduced-complexity model, Geomorphology, 339, pp. 87-103, (2019); 
Croissant, Thomas, Rapid post-seismic landslide evacuation boosted by dynamic river width, Nature Geoscience, 10, 9, pp. 680-684, (2017); 
undefined, (1996); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, X.-W., Nie, G.-Z., Deng, Y., An, J.-W., Xia, C.-X.
AUTHOR FULL NAMES: Fan, Xiwei (57192692501); Nie, Gaozhong (8728895400); Deng, Yan (36828950700); An, Jiwen (55567232300); Xia, Chaoxu (57201380475)
57192692501; 8728895400; 36828950700; 55567232300; 57201380475
Earthquake building damage detection using UAV thermal infrared remote sensing images 基于无人机热红外遥感数据的地震倒塌房屋提取
(2021) Dizhen Dizhi, 43 (6), pp. 1657 - 1670, Cited 1 times.
DOI: 10.3969/j.issn.0253-4967.2021.06.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123414299&doi=10.3969%2Fj.issn.0253-4967.2021.06.017&partnerID=40&md5=05100a0a11fec8da6ccaf0426e32c10c

AFFILIATIONS: China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: Remote sensing is widely used for large-scale land surface information acquisition, such as land surface temperature estimation, land use and land cover classifications. Compared with in-situ field investigation, remote sensing has many advantages of efficiency and cost saving of human and material resources. As for the seismic risk reduction, the building area extraction, building height and other parameters acquisition, building structure type classification, and identification of post-earthquake building collapse, earthquake induced landslide, quake lake and other secondary disasters are the most important parts of remote sensing applications. The high- or mid-spatial resolution visible images of centimeters to meters acquired from airborne and spaceborne instruments are widely used for damage building identifications, such as the April 14th Yushu earthquake in 2010. But the visible images cannot be used for nighttime land surface information acquisition. Thus, the active remote sensing techniques such as SAR or LiDAR are effective substitution for nighttime earthquake disaster information acquisitions. But the SAR and LiDAR data are not shown in traditional way which are similar with the visible images, and can only be interpreted by professional researchers. Note that some of the earthquakes occurred during the nighttime, for example the July 28th Tangshan earthquake occurred at the local time of 3:42. The nighttime earthquake disaster information acquisition is as important as the daytime. Considering the thermal infrared(TIR)sensor can receive thermal radiances emitted by surface features with the wavelength of 3 to 100μm and independent on solar radiations, this study tries to use TIR data acquired during nighttime to identify earthquake building damage types. This study takes the Beichuan earthquake site of the Wenchuan earthquake in 2008 as the research area. To acquire TIR image of the study area, the UAV of DJI M200 version 2 with the payload of ZENMUSE XT2 is used. The XT2 has two cameras, with one traditional RGB visible camera and one TIR camera with the center wavelength of 10μm and spectral range of 7.5~13.5μm. The focal plane of XT2 have pixels of 4000×3000 for the visible camera and 640×512 for TIR camera. The pixel size of the TIR camera focal plane is 17μm and the focal length is 13mm. The M200 used in this study was flying at a height of 120m above ground. Thus the spatial resolution of the corresponding TIR image is about 15.7cm for vertical view condition. The TIR images of old town and new town of Beichuan county-seat are acquired with M200. To evaluate the accuracy of identification of the damaged buildings using UAV TIR data, the visible images of the study areas are also acquired during the daytime and taken as reference. After mosaicing the daytime visible images and nighttime TIR images, respectively, all the buildings in the study area are classified into three damage types by artificial interpretation: slight damage, moderate damage, and destruction. By comparing the damaged building types by visible remote sensing data as the true value, the confuse matrix are constructed for the TIR data estimated building damage types. It is found that the UAV TIR remote sensing data can be used for the identification of damaged buildings at night, and the overall accuracy is 0.86, among which the user accuracy of the three damage types are all larger than 0.8. The mapping accuracy is 0.95, 0.67, and 0.84, for slight damage, moderate damage, and destruction types, respectively. The accuracy of moderate damage is 0.67. This is because the TIR image has only one channel and cannot show colors. Thus the moderate damage buildings are confused with trees and other features. © 2021, Editorial Office of Seismology and Geology. All right reserved.
AUTHOR KEYWORDS: Collapsed buildings; Earthquakes; Thermal infrared image; UAV
INDEX KEYWORDS: Buildings; Cameras; Classification (of information); Damage detection; Disasters; Infrared imaging; Infrared radiation; Land use; Optical radar; Pixels; Remote sensing; Surface measurement; Unmanned aerial vehicles (UAV); Collapsed buildings; Damage type; Earthquake building damage; Information acquisitions; Remote-sensing; Study areas; Thermal infrared data; Thermal infrared images; Thermal infrared remote sensing; Visible image; Earthquakes; accuracy assessment; building; detection method; disaster; earthquake; earthquake damage; remote sensing; satellite imagery; Beichuan; China; Sichuan
REFERENCES: Fan, Xiwei, The extraction of house distribution based on photogrammetry method: Taking the countryside in the west of china for example, Dizhen Dizhi, 39, 4, pp. 805-818, (2017); 
Urban Geotechnical Investigation and Surveying, (2013); 
Zhao, G. M., The statistical analysis of the day and night and the season distribution of earthquakes in China, Earthquake, 21, 3, pp. 51-56, (2001); 
Remote Sensing for Land Resources, (1998); 
Ha, Hyunuk Wook, Fault detection on transmission lines using a microphone array and an infrared thermal imaging camera, IEEE Transactions on Instrumentation and Measurement, 61, 1, pp. 267-275, (2012); 
Mansor, Shattri Bin, Monitoring of underground coal fires using thermal infrared data, International Journal of Remote Sensing, 15, 8, pp. 1675-1685, (1994); 
Qin, Qi Ming, Geothermal area detection using Landsat ETM+ thermal infrared data and its mechanistic analysis-A case study in Tengchong, China, International Journal of Applied Earth Observation and Geoinformation, 13, 4, pp. 552-559, (2011); 
Rockwell, Barnaby W., Identification of quartz and carbonate minerals across northern Nevada using aster thermal infrared emissivity data-implications for geologic mapping and mineral resource investigations in well-studied and frontier areas, Geosphere, 4, 1, pp. 218-246, (2008)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, N., Tang, C., Zhang, X., Chang, M., Shu, Z., Bu, X.
AUTHOR FULL NAMES: Li, Ning (57211181445); Tang, Chuan (35932953300); Zhang, Xianzheng (57219298270); Chang, Ming (36727157900); Shu, Zhile (35206929200); Bu, Xianghang (56660319500)
57211181445; 35932953300; 57219298270; 36727157900; 35206929200; 56660319500
Characteristics of the disastrous debris flow of Chediguan gully in Yinxing town, Sichuan Province, on August 20, 2019
(2021) Scientific Reports, 11 (1), art. no. 23666, Cited 21 times.
DOI: 10.1038/s41598-021-03125-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120968686&doi=10.1038%2Fs41598-021-03125-x&partnerID=40&md5=14746cd933f1d0ad0320e3c3d327e3da

AFFILIATIONS: School of Sciences, Xihua University, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; State Grid Corporation of China, Beijing, China
ABSTRACT: On August 20, 2019, at 2 a.m., a disastrous debris flow occurred in Chediguan gully in Yinxing town, China. The debris flow destroyed the drainage groove and the bridge at the exit of the gully. In addition, the debris flow temporarily blocked the Minjiang River during the flood peak, flooding the Taipingyi hydropower station 200 m upstream and leaving two plant workers missing. To further understand the activity of the debris flow after the Wenchuan earthquake, the characteristics of this debris flow event were studied. Eleven years after the Wenchuan earthquake, a disastrous debris flow still occurred in the Chediguan catchment, causing more severe losses than those of earlier debris flows. In this paper, the formation mechanism and dynamic characteristics of this debris flow event are analysed based on a drone survey, high-definition remote sensing interpretations and other means. The catastrophic debris flow event indicates that debris flows in the Wenchuan earthquake area are still active. A large amount of dredging work in the main gully could effectively reduce the debris flow risk in the gully. In addition, it is also important to repair or rebuild damaged mitigation measures and to establish a real-time monitoring and early warning system for the high-risk gully. © 2021, The Author(s).
INDEX KEYWORDS: article; catchment area (hydrology); dredging; earthquake; human; remote sensing
REFERENCES: Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018); 
Mountain Research, (2014); 
Tang, Chuan, Triggering conditions and depositional characteristics of a disastrous debris flow event in Zhouqu city, Gansu Province, northwestern China, Natural Hazards and Earth System Sciences, 11, 11, pp. 2903-2912, (2011); 
Tang, Chuan, Landslide hazard assessment of the 2008 wenchuan earthquake: A case study in Beichuan area, Canadian Geotechnical Journal, 48, 1, pp. 128-145, (2011); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Mountain Research, (2019); 
Analysis of Energy Dissipation Effect of Chediguan Gully on the Duwen Highway D, (2016); 
Research on the Development Characteristics and Counter Measurement of the Debris Flow in Chediguan Gully Along the State Road of G213, (2015)
PUBLISHER: Nature Research
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Cheng, Q., Yang, Y., Du, Y.
AUTHOR FULL NAMES: Cheng, Qiang (57203812315); Yang, Yinghui (55323282300); Du, Yi (57244552500)
57203812315; 55323282300; 57244552500
Failure mechanism and kinematics of the Tonghua landslide based on multidisciplinary pre- and post-failure data
(2021) Landslides, 18 (12), pp. 3857 - 3874, Cited 11 times.
DOI: 10.1007/s10346-021-01770-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118202528&doi=10.1007%2Fs10346-021-01770-x&partnerID=40&md5=a972378501b3dbf62862dbdf0920dd0f

AFFILIATIONS: Chengdu Aircraft Design and Research Institute, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Knowledge of kinematics is crucial for understanding landslide mechanisms and assessing hazards. However, characterizing landslide kinematics is often challenging because landslides are sudden events with spatial and temporal coverage. Combining field investigations and remote sensing, the present study reveals the kinematic features, evolution processes, and triggering mechanism of a translational debris slide (the Tonghua landslide) that occurred on August 8 of 2017 in Sichuan Province, China. Based on digital orthophoto maps and digital elevation models derived from unmanned aerial vehicle photogrammetry, 3 years of post-failure kinematics were surveyed in detail. The landslide body experienced moderate-velocity (1.19–3.98 m/d) to slow-velocity (33.2–205.5 mm/d) sliding, eventually entering a period of very-slow-velocity (0.1–1.0 mm/d) sliding. A long-term pre-failure creeping process in the source area of the landslide was detected by interpreting interferometric synthetic aperture radar data and satellite images. At the front part of the source area, the observed deformation velocity was 15–25 mm/year between November 7, 2014 and July 30, 2017. Additionally, the source area of the landslide was found to be located on a hollow slope within a cirque catchment of ~ 67,500 m2. This complicated topographic feature promoted groundwater infiltration and long-term slope creeping; indeed, the 2008 Wenchuan earthquake may have aggravated surface cracking and soil weakening. Long-term creep of the slope caused cracking, saturation, and deformation of the soil body. Finally, seismic effects caused by tunnel blasting triggered sliding of the deformed soils. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Debris slide; Kinematics; Moraine soil; Triggering mechanism
INDEX KEYWORDS: Antennas; Catchments; Creep; Debris; Earthquakes; Failure (mechanical); Groundwater; Kinematics; Landslides; Remote sensing; Synthetic aperture radar; Velocity; Debris slide; Failure data; Failure mechanism; Landslide mechanism; Moraine soil; Source area; Spatial coverage; Sudden events; Temporal coverage; Triggering mechanism; Soils; cirque; cracking (fracture); kinematics; landslide; orthophoto; Sichuan earthquake 2008; unmanned vehicle; China; Sichuan; Wenchuan
REFERENCES: Adushkin, Vitaly V., Hill Slope Falls and Long-Runout Rockslides under Large-Scale Underground Blasting, Journal of Mining Science, 55, 6, pp. 893-904, (2019); 
Bai, Shibiao, Comparing characteristics of rainfall- and earthquake-triggered landslides in the Upper Minjiang catchment, China, Engineering Geology, 268, (2020); 
Berardino, Paolo, A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms, IEEE Transactions on Geoscience and Remote Sensing, 40, 11, pp. 2375-2383, (2002); 
Carlà, Tommaso, Combination of GNSS, satellite InSAR, and GBInSAR remote sensing monitoring to improve the understanding of a large landslide in high alpine environment, Geomorphology, 335, pp. 62-75, (2019); 
Report on Highways Damage in the Wenchuan Earthquake Geological Disaster in Chinese, (2012); 
Cheng, Qiang, Research on development rules of seismic landslide and collapse along highways in highly seismic region of Wenchuan earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 30, 9, pp. 1747-1760, (2011); 
Mario Costantini, T., A novel phase unwrapping method based on network programming, IEEE Transactions on Geoscience and Remote Sensing, 36, 3, pp. 813-821, (1998); 
Gb67222003, (2014); 
undefined; 
Dai, Fuchu, Landslide characteristics and slope instability modeling using GIS, Lantau Island, Hong Kong, Geomorphology, 42, 3-4, pp. 213-228, (2002)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Z., Liu, G., Wang, L., Liu, S., Fu, X.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Liu, Gang (57197857405); Wang, Liyong (57213183655); Liu, Shihao (57211588439); Fu, Xiaolong (57211576388)
24485723300; 57197857405; 57213183655; 57211588439; 57211576388
Evolution of hydro-mechanical behaviours and its influence on slope stability for a post-earthquake landslide: implications for prolonged landslide activity
(2021) Bulletin of Engineering Geology and the Environment, 80 (11), pp. 8803 - 8822, Cited 5 times.
DOI: 10.1007/s10064-021-02463-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116371713&doi=10.1007%2Fs10064-021-02463-4&partnerID=40&md5=7017f85356399d22c2c0cd692a172fa5

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Ltd., Chengdu, Sichuan, China
ABSTRACT: There has been considerable research on the prolonged effects and evolution of post-earthquake landslides, as they are of significance for disaster relief and rebuilding plans in earthquake-impacted regions. There is a need to better quantify these prolonged effects and evolution based on the hydro-mechanical mechanisms of post-earthquake landslides. This study investigated the evolution of the hydro-mechanical behaviour and parameters of a single landslide by integrating experimental and theoretical analyses. Analyses were undertaken using a time series of in situ monitoring data over five hydrological years on a single landslide site in the Baisha River basin of Dujiangyan, in the Wenchuan earthquake region, China. Results indicated a linear increase in the angle of internal friction under prolonged effects, while soil cohesion decreased non-linearly, gradually approaching a lower limit. The saturated hydraulic conductivity (K<inf>s</inf>) increased, and the soil residual water content (θ<inf>r</inf>) evolution curve conformed to the Boltzmann function distribution model. The soil–water characteristic curve parameters gradually increased. Based on the hydro-mechanical parameter evolution, the spatiotemporal decay of the landslide over the next decade under extreme rainfall conditions was predicted using the rainfall slope stability models and TRIGRS. This paper proposed a mechanistic explanation for the prolonged effects of a post-earthquake landslide in response to rainfall. Furthermore, it provided a reliable theoretical basis for the early warning and prevention of such landslides. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Hydro-mechanical parameters evolution; Post-earthquake landslide; Prolonged landslide activity; Rainfall-induced landslide; Slope structure coursing
INDEX KEYWORDS: Disaster prevention; Distribution functions; Earthquakes; Mechanisms; Rain; Soils; Time series analysis; Hydro-mechanical; Hydro-mechanical parameter evolution; Hydromechanical behaviour; Mechanical parameters; Parameter evolution; Post-earthquake landslide; Prolonged landslide activity; Rainfall induced landslides; Slope structure; Slope structure coursing; Landslides; earthquake engineering; hydromechanics; landslide; rainfall; slope stability
REFERENCES: Alvioli, Massimiliano, Parallelization of the TRIGRS model for rainfall-induced landslides using the message passing interface, Environmental Modelling and Software, 81, pp. 122-135, (2016); 
Alvioli, Massimiliano, Implications of climate change on landslide hazard in Central Italy, Science of the Total Environment, 630, pp. 1528-1543, (2018); 
Trigrs A Fortran Program for Transient Rainfall Infiltration and Grid Based Regional Slope Stability Analysis, (2002); 
Baum, Rex L., Estimating the timing and location of shallow rainfall-induced landslides using a model for transient, unsaturated infiltration, Journal of Geophysical Research: Earth Surface, 115, 3, (2010); 
Bhatnagar, P. L., A model for collision processes in gases. I. Small amplitude processes in charged and neutral one-component systems, Physical Review, 94, 3, pp. 511-525, (1954); 
Cai, Huan, An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits, Geofluids, 2019, (2019); 
Chang, Dongsheng, Field testing of erodibility of two landslide dams triggered by the 12 May Wenchuan earthquake, Landslides, 8, 3, pp. 321-332, (2011); 
Chen, Hongxin, Evolution of debris flow properties and physical interactions in debris-flow mixtures in the Wenchuan earthquake zone, Engineering Geology, 182, PB, pp. 136-147, (2014); 
Journal of Mountain Science, (2008); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ding, M., Yang, G., Gao, Z., Huang, T.
AUTHOR FULL NAMES: Ding, Mingtao (55421086000); Yang, Guohui (57218169617); Gao, Zemin (57219269884); Huang, Tao (57037451200)
55421086000; 57218169617; 57219269884; 57037451200
Analysis of material supply characteristics of debris flow based on land use types in the upper Min River, China
(2021) IOP Conference Series: Earth and Environmental Science, 861 (5), art. no. 052017, Cited 1 times.
DOI: 10.1088/1755-1315/861/5/052017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118883332&doi=10.1088%2F1755-1315%2F861%2F5%2F052017&partnerID=40&md5=92ee299a4142ffa59909021929b45043

AFFILIATIONS: Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
ABSTRACT: Land-use type is a natural choice of human social and economic activities. This study investigates the typical debris flow gullies of the upper Min River and analyses the supply characteristics and activity of its material sources under various land-use types using multi-stage remote sensing images data and geographic information system software. The results demonstrate the following: (1) the land-use type does not restrict the loose material source of debris flow near the fault zone; (2) the degree of cultivated land, forest (grass) land, bare land, and urban and rural construction land promote debris flow disaster formation in different channels far from the fault zone; (3) the gully exhibits significant influence on human engineering activities, and there are more loose material sources between the bare land and urban and rural construction land; (4) more loose material sources are observed in forest (grass) land and cultivated land in debris flow channels with vegetation development. In summary, before the Wenchuan earthquake, the debris flow source centroid is far from the debris flow channel, but after the earthquake, the debris flow material source centroid is near the debris flow channel. © Published under licence by IOP Publishing Ltd.
REFERENCES: Collison, Andrew J.C., Using a combined slope hydrology/stability model to identify suitable conditions for landslide prevention by vegetation in the humid tropics, Earth Surface Processes and Landforms, 21, 8, pp. 737-747, (1996); 
Cheng, Jack D., Hydrometeorological and landuse attributes of debris flows and debris floods during typhoon Toraji, July 29-30, 2001 in central Taiwan, Journal of Hydrology, 306, 1-4, pp. 161-173, (2005); 
Cannon, Susan H., Debris-flow generation from recently burned watersheds, Environmental and Engineering Geoscience, 7, 4, pp. 321-341, (2001); 
Pabst, Robert J., Ten years of vegetation succession on a debris-flow deposit in Oregon, Journal of the American Water Resources Association, 37, 6, pp. 1693-1708, (2001); 
Sorg, Annina, Debris-flow activity along a torrent in the Swiss Alps: Minimum frequency of events and implications for forest dynamics, Dendrochronologia, 28, 4, pp. 215-223, (2010); 
Bollschweiler, Michelle, Dynamics in debris-flow activity on a forested cone - A case study using different dendroecological approaches, Catena, 72, 1, pp. 67-78, (2008); 
Geological Environment Analysis and Application Research for Land Use Planning, (2008); 
Ding, Mingtao, Author Correction: Respective influence of vertical mountain differentiation on debris flow occurrence in the Upper Min River, China (Scientific Reports, (2020), 10, 1, (11689), 10.1038/s41598-020-68590-2), Scientific Reports, 10, 1, (2020); 
Ding, Mingtao, Response analysis of valley settlements to the evolution of debris flow fans under different topographic conditions: a case study of the upper reaches of Min River, China, Bulletin of Engineering Geology and the Environment, 79, 3, pp. 1639-1650, (2020); 
Gao, Zemin, Geohazard vulnerability assessment in Qiaojia seismic zones, SW China, International Journal of Disaster Risk Reduction, 52, (2021)
PUBLISHER: IOP Publishing Ltd
CONFERENCE NAME: 11th Conference of Asian Rock Mechanics Society, ARMS 2021
CONFERENCE DATE: 2021-10-21 through 2021-10-25
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 173382
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Bai, X.-F., Nie, G.-Z., Ye, L.-Y., Dai, Y.-Q., Yu, Q.-K.
AUTHOR FULL NAMES: Bai, Xianfu (56720696400); Nie, Gaozhong (8728895400); Ye, Liaoyuan (55969585900); Dai, Yuqian (56510762300); Yu, Qing Kun (57360225800)
56720696400; 8728895400; 55969585900; 56510762300; 57360225800
A method for rapid assessment of death toll from earthquake-induced landslide based on GIS and the logistic model 基于GIS和logistic模型的地震滑坡致死人数快速评估方法
(2021) Dizhen Dizhi, 43 (5), pp. 1250 - 1268, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2021.05.013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120495072&doi=10.3969%2Fj.issn.0253-4967.2021.05.013&partnerID=40&md5=f170480c648276c916cf43cea9f2946b

AFFILIATIONS: Faculty of Geography, Yunnan Normal University, Chenggong, Yunnan, China; Yunnan Earthquake Agency, Kunming, Yunnan, China; China Earthquake Administration, Beijing, China
ABSTRACT: The scientific assessment is one of the cornerstones for improving the earthquake disaster loss assessment system and the accuracy of the assessment of casualties caused by seismogeological hazards. However, this question has long been plaguing scientists engaged in the earthquake disaster risk assessment. So far there is no better solution yet. To solve this problem, the authors develop a new method for rapid assessment of the death toll caused by the earthquake-induced landslide based on GIS techniques and the logistic regression model. The method mainly consists of three procedures: 1)On GIS platform, the study area is divided into 1km×1km grid cells, and the number of the people in each cell is assigned to the cell as its population attribute; 2)based on the cell's earthquake risk attribute, the landslide death rate in each cell is calculated by using the logistic regression model, and 3)by adding the death number in each cell, the total death toll in the study area are got. To test our new model, we select four earthquake events for case study: the 2014 Ludian, Yunnan M<inf>S</inf>6.5 earthquake; the 2008 Wenchuan, Sichuan M<inf>S</inf>8.0 earthquake, and the 2012 Yiliang, Yunnan M<inf>S</inf>5.6 & 5.7 double earthquakes. Here, the Ludian earthquake case is for testing the effectiveness of our new model. The other two cases serve for testing the practicability of our model for the future earthquake disasters in other places in China. Our logistic model of the landslide death-rate in the kilometer grid shows that the absolute values of the coefficients of the 2 impact factors are relatively large. These 2 factors, which indicate respectively the highest landslide-hazard grade and the lowest one, are playing critical roles in deciding the death toll from earthquake-induced landslide. In each kilometer grid, when the impact factors of the landslide-hazard grade are 5, 4, and 3, their corresponding coefficients are respectively 0.04077, 0.03130, and 0.01365. If the number of the sub-grids corresponding to these 3 impact factors rise, the death rate will accordingly rise. The more the sub-grids with high impact factors, the higher the death-rate will be. When the impact factors of the landslide-hazard grade are 2 and 1, their corresponding coefficients are respectively -0.01666 and -0.09652. If the number of the sub-grids corresponding to these 2 impact factors rise, the death rate will accordingly fall. The more the sub-grids with low impact factors, the lower the death-rate will be. For the Ludian earthquake, we estimate 233 deaths according to our model, with an error rate of 6.80%compared with 250 dead and missing people in reality, and Kappa coefficient is 0.912, indicating the feasibility of our model. In the 2008 Wenchuan earthquake event, a total of about 20000 people died and went missing due to earthquake-induced landslides, while our evaluation is 18732, with an error rate about 6.5%. For the Yiliang double earthquake event, we get 48 deaths by our model, 11 less than the actual number. The error rate is 18.64%, and Kappa coefficient is 0.899. The results suggest that on the premise of the allowable error, our method is practical and can be applied to assessing the landslide death toll for other earthquake events in future. © 2021, Editorial Office of Seismology and Geology. All right reserved.
AUTHOR KEYWORDS: Death toll; Earthquake-induced landslides; Evaluation model; One-square-kilometer grid
INDEX KEYWORDS: Cells; Disasters; Earthquakes; Hazards; Landslides; Population statistics; Death rates; Death tolls; Earthquake events; Earthquake-induced landslides; Error rate; Evaluation models; Impact factor; Landslide hazard; One-square-kilometer grid; Sub-grids; Risk assessment; disaster; earthquake; GIS; landslide; logistics; regression; solution; China; Ludian; Sichuan; Wenchuan; Yiliang; Yunnan
REFERENCES: An, Jiwen, Earthquake disaster rapid assessment for emergency response supported by high-precision data of hazard bearing body, Dizhen Dizhi, 37, 4, pp. 1225-1241, (2015); 
Earthquake Research in China, (2014); 
Journal of Seismological Research, (2015); 
Key Technology and Information Service for Earthquake Emergency of Yunnan Province, (2018); 
Acta Petrologica Sinica, (2011); 
Technology for Earthquake Disaster Prevention, (2012); 
Technology for Earthquake Disaster Prevention, (2019); 
Journal of Geodesy and Geodynamics, (2014); 
A Study on Earthquake Emergency Radiation Capacity, (2021); 
Regional Risk Assessment of Earthquake Induced Geological Disasters in China M, (2011)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, J., Yu, Y., Zhang, Z.
AUTHOR FULL NAMES: Jin, Cheng (58078867300); Yu, Kai (58079627900); Zhang, Ke (58079883100)
58078867300; 58079627900; 58079883100
Evaluation of MODIS-based Vegetation Restoration after the 2008 Wenchuan Earthquake
(2021) E3S Web of Conferences, 308, art. no. 02005, Cited 0 times.
DOI: 10.1051/e3sconf/202130802005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146879504&doi=10.1051%2Fe3sconf%2F202130802005&partnerID=40&md5=6189599b28114877b6e5a42892b58da0

AFFILIATIONS: Department of Geography, Simon Fraser University, Burnaby, BC, Canada; College of Science and Engineering, University of Glasgow, Glasgow, Scotland, United Kingdom; School of Geodesy and Geomatics, Wuhan University, Wuhan, Hubei, China
ABSTRACT: Mountainous vegetation recovery after major earthquakes has been significant for preventing postseismic soil erosion and geo-hazards. Magnitude 7.9 Wenchuan earthquake struck western Sichuan, China in 2008, caused salient number of geological hazards and caused major vegetation damage. This recovery process could be a very long and fluctuating. And Remote sensing has been an important method of vegetation restoration monitoring. This study aims to use remote sensing technology data to analyze the post-seismic vegetation damage and recovery situation of the 2008 Wenchuan earthquake over years to 2020, and find the relevant factors affecting the restoration of ecological vegetation. This paper examined the vegetation recovery processes following the 2008 Wenchuan earthquake using 16-day interval MODIS normalized difference vegetation index time series from 2000 to 2020. It has been found that the vegetation recovery rate generally increased by years, the entire study area has recovered 49.89% by 2020. In addition, by combining remote sensing imagery and geographic information data, we also found that the heavily affected vegetation areas are mainly located along the southern part of the earthquake surface rupture, where have a very high slope which mainly over 60 degrees. It makes this part having higher probabilities to experiences secondary natural hazards and a fluctuating vegetation recovery rate. Through this research, it can be concluded that remote sensing is an effective method for monitoring vegetation dynamics in a long series. For soil and soil retention and ecological vegetation protection of landslides after the earthquake, it should be more concerned about the areas where have steep slope that over 60 degrees. © 2021 EDP Sciences. All rights reserved.
REFERENCES: Remote Sensing of Environment; 
Jiang, Weiguo, Evaluating the vegetation recovery in the damage area of Wenchuan earthquake using MODIS data, Remote Sensing, 7, 7, pp. 8757-8778, (2015); 
Wang, Ming, Diagnosis of vegetation recovery in mountainous regions after the wenchuan earthquake, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7, 7, pp. 3029-3037, (2014); 
M8 0 Wenchuan Earthquake, (2010); 
Vegetation Indices 16 Day L3 Global 250m; 
Yang, Ming Der, Post-earthquake spatio-temporal landslide analysis of Huisun Experimental Forest Station, Terrestrial, Atmospheric and Oceanic Sciences, 30, 4, pp. 493-508, (2019); 
Jou Jou Using Multi Date Spot 1 2 and 4 Images Remote Sensing; 
Jiao, Quanjun, Assessment of spatio-temporal variations in vegetation recovery after the Wenchuan earthquake using Landsat data, Natural Hazards, 70, 2, pp. 1309-1326, (2014); 
Lin, Wentzu, Vegetation recovery monitoring and assessment at landslides caused by earthquake in Central Taiwan, Forest Ecology and Management, 210, 1-3, pp. 55-66, (2005); 
Cui Peng Spatial Temporal Process and Characteristics of Vegetation Recovery After Wenchuan Earthquake A Case Study in Longxi River Basin of Dujiangyan
PUBLISHER: EDP Sciences
CONFERENCE NAME: 6th International Conference on Materials Science, Energy Technology and Environmental Engineering, MSETEE 2021
CONFERENCE DATE: 2021-08-13 through 2021-08-15
CONFERENCE LOCATION: Hangzhou
CONFERENCE CODE: 185517
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Applicability of Accurate Ground Motion Estimation Using Initial P Wave for Earthquake Early Warning
(2021) Frontiers in Earth Science, 9, art. no. 718216, Cited 6 times.
DOI: 10.3389/feart.2021.718216
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116031363&doi=10.3389%2Ffeart.2021.718216&partnerID=40&md5=926e1116807c5b5d8c6e58abd1db07dc

AFFILIATIONS: Beijing Jiaotong University, Beijing, China; School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: The earthquake early warning (EEW) system is capable of mitigating seismic hazards and reducing deaths, injuries, and economic losses. Although EEW approaches have already been developed worldwide, improving the accuracy and applicability is still controversial. Aiming at the ground motion estimation using the initial P wave, we investigated eight representative characteristic parameters, i.e., the peak measurements and integral quantities, using the database of the 2008 Wenchuan earthquake, where the aftershocks with the criteria that 4.0 ≤ Ms ≤ 6.5 and epicentral distance less than 150 km are analyzed. We established the relationships between the eight characteristic parameters and four ground motion parameters, respectively, based on which the estimation accuracy and reliability and the extent to which the increasingly expanding time windows could affect the estimates are analyzed accordingly. We found that the integral quantities could also be a robust estimator for peak ground acceleration (PGA), peak ground velocity (PGV), and spectral intensity (SI), while the peak measurement is more useful in estimating peak ground displacement (PGD). In addition, for estimating the ground motion of events with magnitudes less than 6.5, a 2-s window could effectively improve the estimation accuracy by approximately 11.5–18.5% compared with using a 1-s window, as the window increases to 3 s, the accuracy would further improve while the growth rate will be reduced to around 3.0–8.0%. © Copyright © 2021 Wang and Zhao.
AUTHOR KEYWORDS: characteristic parameters; earthquake early warning; ground motion estimation; initial P wave; Wenchuan earthquake
INDEX KEYWORDS: aftershock; early warning system; earthquake epicenter; earthquake magnitude; estimation method; ground motion; P-wave; Sichuan earthquake 2008
REFERENCES: Allen, Richard M., Earthquake early warning: Advances, scientific challenges, and societal needs, Annual Review of Earth and Planetary Sciences, 47, pp. 361-388, (2019); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Boore, David M., Comments on baseline correction of digital strong-motion data: Examples from the 1999 Hector Mine, California, earthquake, Bulletin of the Seismological Society of America, 92, 4, pp. 1543-1560, (2002); 
Böse, Maren, A new trigger criterion for improved real-time performance of onsite earthquake early warning in Southern California, Bulletin of the Seismological Society of America, 99, 2 A, pp. 897-905, (2009); 
China Strong Motion Networks Centre, (2020); 
Colombelli, Simona, A P wave-based, on-site method for earthquake early warning, Geophysical Research Letters, 42, 5, pp. 1390-1398, (2015); 
Colombelli, Simona, Rapid and reliable seismic source characterization in earthquake early warning systems: current methodologies, results, and new perspectives, Journal of Seismology, 20, 4, pp. 1171-1186, (2016); 
Cremen, Gemma, Earthquake early warning: Recent advances and perspectives, Earth-Science Reviews, 205, (2020); 
Erdik, Mustafa O., Istanbul earthquake rapid response and the early warning system, Bulletin of Earthquake Engineering, 1, 1, pp. 157-163, (2003); 
Festa, Gaetano, Earthquake magnitude estimation from early radiated energy, Geophysical Research Letters, 35, 22, (2008)
PUBLISHER: Frontiers Media SA
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Hu, X., Zhou, L.-Q., Liu, W.-M., Wang, H., Cui, L.
AUTHOR FULL NAMES: Hu, Xudong (57204681802); Zhou, Liqin (57210133880); Liu, Weiming (36468680600); Wang, Hao (57200984649); Cui, Lei (57265347800)
57204681802; 57210133880; 36468680600; 57200984649; 57265347800
Geomorphic effect of debris-flow sediments on the Min River, Wenchuan Earthquake region, western China
(2021) Journal of Mountain Science, 18 (9), pp. 2427 - 2440, Cited 11 times.
DOI: 10.1007/s11629-021-6816-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115247472&doi=10.1007%2Fs11629-021-6816-1&partnerID=40&md5=7ecdb68fbf61a606a3e9dff7867cce49

AFFILIATIONS: College of Civil Engineering & Architecture, China Three Gorges University, Yichang, Hubei, China; Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; China Renewable Energy Engineering Institute, Beijing, China
ABSTRACT: Coseismic landslides and subsequent mobilization of sediment greatly aggravated the landscape evolution and river sedimentation after the Wenchuan earthquake. The debris-flow alluvial fan and river morphological index was combined to describe quantitatively the effects of debris-flow sediment on the river characteristics in Longmen Mountains. The section of the Min River from the urban area of the Wenchuan county to the epicenter, the Yingxiu town in this county, was selected as the study area. We identified 27 river-blocking debris-flows (5 partial-, 7 semi-, 7 over semi-, and 5 fully-blocking degrees) in the study area via remote sensing interpretation and field survey. Based on this, the response of river longitudinal profile and curvature to debris-flow sediment was qualitatively and quantitatively analyzed. The results show that the channel gradient has decreased due to debris-flow aggradation, while two marked peaks in the river steepness index (k<inf>sn</inf>, represents the relative steepness degree of the channel) changed from 585 m0.9 to 732 m0.9 in zone 1, from 362 m0.9 to 513 m0.9 in zone 2. Moreover, the main channel has undergone substantial lateral migration with channel width decreased and river curvature increased. The temporal and spatial variation between river morphological characteristics and debris-flow sediments in short-term provides insights into the internal dynamic role of mass wasting processes in river morphology, which could be served as useful information for natural hazards management to prevent the river from being blocked by episodically debris flows after the earthquake. © 2021, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Debris-flow sediment; Longitudinal profile; Min River; River curvature; Wenchuan earthquake
INDEX KEYWORDS: aggradation; alluvial fan; debris flow; fluvial deposit; fluvial geomorphology; landscape evolution; Sichuan earthquake 2008; urban area; China; Min River [Sichuan]; Sichuan
REFERENCES: Awang Ali, Awang Nasrizal, Environmental Degradation: A Review on the Potential Impact of River Morphology, MATEC Web of Conferences, 103, (2017); 
Synthetic Aperture Radar Data, (2020); 
Beeson, Helen W., Geometric disequilibrium of river basins produces long-lived transient landscapes, Earth and Planetary Science Letters, 475, pp. 34-43, (2017); 
Benda, Lee E., Debris flows as agents of morphological heterogeneity at low-order confluences, Olympic Mountains, Washington, Bulletin of the Geological Society of America, 115, 9, pp. 1110-1121, (2003); 
Berti, Matteo, Prediction of debris flow inundation areas using empirical mobility relationships, Geomorphology, 90, 1-2, pp. 144-161, (2007); 
Burbank, Douglas W., Rates of erosion and their implications for exhumation, Mineralogical Magazine, 66, 1, pp. 25-52, (2002); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Domènech, Guillem, Modelling the role of material depletion, grain coarsening and revegetation in debris flow occurrences after the 2008 Wenchuan earthquake, Engineering Geology, 250, pp. 34-44, (2019); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shan, X.-J., Li, Y., Wang, Z., Yin, H., Liu, X., Liu, Y., Zhang, G., Zhang, Y., Qu, C.
AUTHOR FULL NAMES: Shan, Xianjian (7101712284); Li, Yanchuan (56986733600); Wang, Zhenjie (35753834100); Yin, Hao (57207472205); Liu, Xiaodong (57207452246); Liu, Yunhua (26322999900); Zhang, Guohong (14010226900); Zhang, Yingfeng (57188712777); Qu, Chunyan (8204955900)
7101712284; 56986733600; 35753834100; 57207472205; 57207452246; 26322999900; 14010226900; 57188712777; 8204955900
Gnss for quasi-real-time earthquake source determination in eastern tibet: A prototype system toward early warning applications
(2021) Seismological Research Letters, 92 (5), pp. 2988 - 2997, Cited 13 times.
DOI: 10.1785/0220190244
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114653124&doi=10.1785%2F0220190244&partnerID=40&md5=94c18efe6203d0e826fabf98bbca90a8

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao, Shandong, China
ABSTRACT: Active crustal deformation of the Tibetan plateau results in destructive continental earthquakes and is therefore the focus of intense research interest. Increases in the numbers of Global Navigation Satellite System (GNSS) networks and stations deployed in Tibet are allowing for the characterization of crustal deformation during different phases of the earthquake cycle. Here, we present the status of a "seismic + high-rate GNSS" network deployed in eastern Tibet, including its data streams and data processing system, with the goal of supporting quasi-real-time earthquake source determination. Furthermore, we use this network to test a prototype earthquake early warning (EEW) system using data from the 2008Mw 7.9 Wenchuan earthquake, the 2011 Mw 9.0 Tohoku earthquake, and 2200 synthetic earthquakes with moment magnitudes ranging from 6.5 to 7.5 on the southern Longmen Shan fault and Anninghe fault. The results show that our current methodology could respond to moderate-to-large earthquakes (magnitude 7+) within tens of seconds after the origin time, with implications for EEW applications in China. © 2021 Seismological Society of America. All rights reserved.
INDEX KEYWORDS: Data streams; Deformation; Faulting; Global positioning system; Crustal deformations; Data processing systems; Earthquake early warning; Global Navigation Satellite Systems; Large earthquakes; Research interests; Tohoku earthquakes; Wenchuan Earthquake; Earthquakes; crustal deformation; data processing; early warning system; GNSS; real time; seismic source; Sichuan earthquake 2008; Tohoku earthquake 2011; China; Qinghai-Xizang Plateau
REFERENCES: Allen, Richard M., Earthquake early warning: Advances, scientific challenges, and societal needs, Annual Review of Earth and Planetary Sciences, 47, pp. 361-388, (2019); 
Allen, Richard M., Real-time earthquake detection and hazard assessment by ElarmS across California, Geophysical Research Letters, 36, 5, (2009); 
Allen, Richard M., Quake warnings, seismic culture, Science, 358, 6367, (2017); 
Amey, Ruth M.J., A Bayesian Method for Incorporating Self-Similarity Into Earthquake Slip Inversions, Journal of Geophysical Research: Solid Earth, 123, 7, pp. 6052-6071, (2018); 
Bendick, Rebecca O., Geodetic evidence for a low slip rate in the Altyn Tagh fault system, Nature, 404, 6773, pp. 69-72, (2000); 
Benedetti, Elisa, Global navigation satellite systems seismology for the 2012 Mw 6.1 emilia earthquake: Exploiting the vadase algorithm, Seismological Research Letters, 85, 3, pp. 649-656, (2014); 
Chen, Qizhi, Spatially variable extension in southern Tibet based on GPS measurements, Journal of Geophysical Research: Solid Earth, 109, 9, pp. B09401-20, (2004); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000); 
Colombelli, Simona, Application of real-time GPS to earthquake early warning in subduction and strike-slip environments, Journal of Geophysical Research: Solid Earth, 118, 7, pp. 3448-3461, (2013); 
Crowell, Brendan W., Real-time inversion of GPS data for finite fault modeling and rapid hazard assessment, Geophysical Research Letters, 39, 9, (2012)
PUBLISHER: Seismological Society of America
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Cui, P., Ye, C., Marcato Júnior, J., Zhang, Z., Guo, J., Li, J.
AUTHOR FULL NAMES: Li, Yao (57196300117); Cui, Peng (56706923500); Ye, Chengming (23013109600); Marcato Júnior, José (55640064500); Zhang, Zhengtao (57193609191); Guo, Jian (57201434267); Li, Jonathan M. (57235557700)
57196300117; 56706923500; 23013109600; 55640064500; 57193609191; 57201434267; 57235557700
Accurate prediction of earthquake-induced landslides based on deep learning considering landslide source area
(2021) Remote Sensing, 13 (17), art. no. 3436, Cited 28 times.
DOI: 10.3390/rs13173436
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114093095&doi=10.3390%2Frs13173436&partnerID=40&md5=42c396736795fd2ba48c452b4caec8c0

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Chengdu University of Technology, Chengdu, China; Architecture and Urbanism and Geography, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil; Faculty of Geographical Science, Beijing Normal University, Beijing, China; Department of Geological Engineering, Chang'an University, Xi'an, Shaanxi, China; Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada
ABSTRACT: An earthquake-induced landslide (EQIL) is a rapidly changing process occurring at the Earth’s surface that is strongly controlled by the earthquake in question and predisposing conditions. Predicting locations prone to EQILs on a large scale is significant for managing rescue operations and disaster mitigation. We propose a deep learning framework while considering the source area feature of EQIL to model the complex relationship and enhance spatial prediction accuracy. Initially, we used high-resolution remote sensing images and a digital elevation model (DEM) to extract the source area of an EQIL. Then, 14 controlling factors were input to a stacked autoencoder (SAE) to search for robust features by sparse optimization, and the classifier took advantage of high-level abstract features to identify the EQIL spatially. Finally, the EQIL inventory collected from the Wenchuan earthquake was used to validate the proposed model. The results show that the proposed method significantly outperformed conventional methods, achieving an overall accuracy (OA) of 91.88%, while logistic regression (LR), support vector machine (SVM), and random forest (RF) achieved 80.75%, 82.22%, and 84.16%, respectively. Meanwhile, this study reveals that shallow machine learning models only take advantage of significant factors for EQIL prediction, but deep learning models can extract more effective information related to EQIL distribution from low-value density data, which is why its prediction accuracy is growing with increasing input factors. There is hope that new knowledge of EQILs can be represented by high-level abstract features extracted by hidden layers of the deep learning model, which are typically acquired by statistical methods. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Earthquake-induced landslide; Source area feature; Spatial prediction; Stacked autoencoder
INDEX KEYWORDS: Data mining; Decision trees; Earthquakes; Forecasting; Landslides; Learning systems; Logistic regression; Remote sensing; Support vector machines; Support vector regression; Surveying; Complex relationships; Conventional methods; Digital elevation model; Disaster mitigation; Earthquake-induced landslides; High resolution remote sensing images; Machine learning models; Sparse optimizations; Deep learning
REFERENCES: Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Umar, Zahrul, Earthquake induced landslide susceptibility mapping using an integrated ensemble frequency ratio and logistic regression models in West Sumatera Province, Indonesia, Catena, 118, pp. 124-135, (2014); 
Alfaro, Pedro, Widespread landslides induced by the Mw 5.1 earthquake of 11 May 2011 in Lorca, SE Spain, Engineering Geology, 137-138, pp. 40-52, (2012); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Parker, Robert N., Spatial distributions of earthquake-induced landslides and hillslope preconditioning in the northwest South Island, New Zealand, Earth Surface Dynamics, 3, 4, pp. 501-525, (2015); 
Ye, Chengming, Landslide detection of hyperspectral remote sensing data based on deep learning with constrains, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 12, 12, pp. 5047-5060, (2019); 
Fan, Xuanmei, Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification, Landslides, 15, 5, pp. 967-983, (2018); 
Meunier, Patrick, Topographic site effects and the location of earthquake induced landslides, Earth and Planetary Science Letters, 275, 3-4, pp. 221-232, (2008); 
Valagussa, Andrea, Seismic and geological controls on earthquake-induced landslide size, Earth and Planetary Science Letters, 506, pp. 268-281, (2019)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Yang, F., Fan, X., Siva Subramanian, S., Dou, X., Xiong, J., Xia, B., Yu, Z., Xu, Q.
AUTHOR FULL NAMES: Yang, Fan (57200696169); Fan, Xuanmei (12752112800); Siva Subramanian, Srikrishnan (57214766764); Dou, Xiangyang (57196153451); Xiong, Junlin (57241703400); Xia, Bing (57221970529); Yu, Zongyang (57241713900); Xu, Qiang (56506033600)
57200696169; 12752112800; 57214766764; 57196153451; 57241703400; 57221970529; 57241713900; 56506033600
Catastrophic debris flows triggered by the 20 August 2019 rainfall, a decade since the Wenchuan earthquake, China
(2021) Landslides, 18 (9), pp. 3197 - 3212, Cited 55 times.
DOI: 10.1007/s10346-021-01713-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114057748&doi=10.1007%2Fs10346-021-01713-6&partnerID=40&md5=42939c514fb72fd297c5c7964439d30c

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Enhanced debris flow activity observed after the 2008 Wenchuan earthquake, Sichuan Province, SW China, is still intense more than a decade since the earthquake. A heavy rainstorm on 20 August 2019 caused catastrophic debris flows in the epicentral area of the earthquake. By remote sensing imagery interpretation and field investigation, 13 debris flows were identified. An empirical rainfall threshold I-D model (intensity–duration) of post-seismic debris flows is established. Changing rainfall thresholds, characteristics, and initiation mechanisms of the 2019 debris flows were analyzed, which are different from the events that occurred in previous years. We find that the 2019 debris flows were mainly initiated by concentrated runoff erosion of sediments stored in tributary channels of catchments, with little contribution from the coseismic landslides and new hillslope failures. Differently, the major sediment supply of debris flows in previous years was mainly from the reactivation of coseismic landslide deposits. By analyzing the triggering rainfall of all recorded debris flows after the Wenchuan earthquake, we find that the rainfall threshold in 2019 is about 1/2–4/5 of the pre-earthquake value, and the I-D model we built can predict the 2019 debris flows successfully. Considering that there are still a large number of coseismic landslide deposits in the mountain catchments and the rainfall thresholds are slowly recovering, the post-seismic debris flows may last for a long period. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Evolving controls; Initiation mechanism; Post-seismic debris flows; Rainfall threshold; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Debris; Deposits; Landslides; Rain; Remote sensing; Runoff; Storms; 2008 wenchuan earthquakes; Concentrated runoff erosions; Debris flow activities; Field investigation; Initiation mechanism; Rainfall thresholds; Remote sensing imagery; Wenchuan Earthquake; Earthquakes; catastrophic event; debris flow; detection method; hillslope; rainfall; remote sensing; runoff; spatiotemporal analysis; tributary; China; Sichuan; Wenchuan
REFERENCES: Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Mapping Time Dependent Changes in Soil Slip Debris Flow Probability, (2020); 
Chang, Chiwen, Estimation of sediment volume of debris flow caused by extreme rainfall in Taiwan, Engineering Geology, 123, 1-2, pp. 83-90, (2011); 
Critical Rainfall Patterns for Rainfall Induced Debris Flows in the Wenchuan Earthquake Area, (2018); 
Chen, Hongey, Relationship between earthquake disturbance, tropical rainstorms and debris movement: An overview from Taiwan, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 161-186, (2009); 
Chen, Ningsheng, Impact of earthquake on debris flows - A case study on the wenchuan earthquake, Journal of Earthquake and Tsunami, 5, 5, pp. 493-508, (2011); 
Chen, Hongxin, Evolution of debris flow properties and physical interactions in debris-flow mixtures in the Wenchuan earthquake zone, Engineering Geology, 182, PB, pp. 136-147, (2014); 
Bulletin of Chinese Academy of Sciences, (2008); 
Dahlquist, Maxwell P., Initiation and Runout of Post-Seismic Debris Flows: Insights From the 2015 Gorkha Earthquake, Geophysical Research Letters, 46, 16, pp. 9658-9668, (2019); 
Domènech, Guillem, Modelling the role of material depletion, grain coarsening and revegetation in debris flow occurrences after the 2008 Wenchuan earthquake, Engineering Geology, 250, pp. 34-44, (2019)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, C., Yi, B., Gao, P., Li, H., Sun, J., Chen, X., Zhong, C.
AUTHOR FULL NAMES: Li, Chang (57226379122); Yi, Bangjin (57226384480); Gao, Peng (59101136500); Li, Hui (57060864200); Sun, Jixing (57226380401); Chen, Xueye (57226380851); Zhong, Cheng (57206593474)
57226379122; 57226384480; 59101136500; 57060864200; 57226380401; 57226380851; 57206593474
Valuable clues for dcnn-based landslide detection from a comparative assessment in the wenchuan earthquake area
(2021) Sensors, 21 (15), art. no. 5191, Cited 17 times.
DOI: 10.3390/s21155191
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111363736&doi=10.3390%2Fs21155191&partnerID=40&md5=8cc59089ce021a3083aa28d3eab09685

AFFILIATIONS: China University of Geosciences, Wuhan, Hubei, China; Yunnan Institute of Geological Science, Kuming, China; Department of Earth and Ocean Sciences, University of North Carolina Wilmington, Wilmington, NC, United States; Department of Geography, University of South Carolina, Columbia, SC, United States; School of Earth Sciences, China University of Geosciences, Wuhan, Hubei, China; Key Laboratory of Urban Land Resources Monitoring and Simulation, MNR, Shenzhen, China
ABSTRACT: Landslide inventories could provide fundamental data for analyzing the causative factors and deformation mechanisms of landslide events. Considering that it is still hard to detect landslides automatically from remote sensing images, endeavors have been carried out to explore the potential of DCNNs on landslide detection, and obtained better performance than shallow machine learning methods. However, there is often confusion as to which structure, layer number, and sample size are better for a project. To fill this gap, this study conducted a comparative test on typical models for landside detection in the Wenchuan earthquake area, where about 200,000 secondary landslides were available. Multiple structures and layer numbers, including VGG16, VGG19, ResNet50, ResNet101, DenseNet120, DenseNet201, UNet−, UNet+, and ResUNet were investigated with different sample numbers (100, 1000, and 10,000). Results indicate that VGG models have the highest precision (about 0.9) but the lowest recall (below 0.76); ResNet models display the lowest precision (below 0.86) and a high recall (about 0.85); DenseNet models obtain moderate precision (below 0.88) and recall (about 0.8); while UNet+ also achieves moderate precision (0.8) and recall (0.84). Generally, a larger sample set can lead to better performance for VGG, ResNet, and DenseNet, and deeper layers could improve the detection results for ResNet and DenseNet. This study provides valuable clues for designing models’ type, layers, and sample set, based on tests with a large number of samples. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Deep learning; DenseNet; Landslide detection; ResNet; U-Net; Wenchuan earthquake
INDEX KEYWORDS: Chemical detection; Earthquakes; Landslides; Remote sensing; Sampling; Comparative assessment; Deformation mechanism; Landslide detection; Landslide inventories; Machine learning methods; Multiple structures; Remote sensing images; Wenchuan Earthquake; Learning systems; earthquake; landslide; machine learning; Machine Learning
REFERENCES: National Geological Disasters Bulletin, (2021); 
Wang, Guoquan, Delineating and defining the boundaries of an active landslide in the rainforest of Puerto Rico using a combination of airborne and terrestrial LIDAR data, Landslides, 10, 4, pp. 503-513, (2013); 
Zhou, Suhua, Support vector machine modeling of earthquake-induced landslides susceptibility in central part of Sichuan province, China, Geoenvironmental Disasters, 2, 1, (2015); 
Marc, Odin, Prediction of the area affected by earthquake-induced landsliding based on seismological parameters, Natural Hazards and Earth System Sciences, 17, 7, pp. 1159-1175, (2017); 
Guzzetti, Fausto, Landslide inventory maps: New tools for an old problem, Earth-Science Reviews, 112, 1-2, pp. 42-66, (2012); 
Zhong, Cheng, Landslide mapping with remote sensing: challenges and opportunities, International Journal of Remote Sensing, 41, 4, pp. 1555-1581, (2020); 
Behling, Robert, Automated spatiotemporal landslide mapping over large areas using rapideye time series data, Remote Sensing, 6, 9, pp. 8026-8055, (2014); 
Ramos-Bernal, Rocío N., Evaluation of unsupervised change detection methods applied to landslide inventory mapping using ASTER imagery, Remote Sensing, 10, 12, (2018); 
Deng, Susu, Semi-automatic approach for identifying locations of shallow debris slides/flows based on lidar-derived morphological features, International Journal of Remote Sensing, 35, 10, pp. 3741-3763, (2014); 
Leshchinsky, Ben A., Contour Connection Method for automated identification and classification of landslide deposits, Computers and Geosciences, 74, pp. 27-38, (2015)
PUBLISHER: MDPI AG
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Wang, X., Li, S., Liu, H., Liu, L., Liu, Y., Zeng, S., Tang, Q.
AUTHOR FULL NAMES: Wang, Xiao (57202370085); Li, Shaoda (7409244630); Liu, Hanhu (9240308700); Liu, Liang (57199086626); Liu, Yanyan (57201931609); Zeng, Sen (56517518800); Tang, Qimin (57223866648)
57202370085; 7409244630; 9240308700; 57199086626; 57201931609; 56517518800; 57223866648
Landslide susceptibility assessment in Wenchuan County after the 5.12 magnitude earthquake
(2021) Bulletin of Engineering Geology and the Environment, 80 (7), pp. 5369 - 5390, Cited 20 times.
DOI: 10.1007/s10064-021-02280-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106303182&doi=10.1007%2Fs10064-021-02280-9&partnerID=40&md5=5f10cf1686e696ea37d8d04f74240acb

AFFILIATIONS: College of Earth Sciences, Chengdu University of Technology, Chengdu, China; Emergency Centre, Guangzhou Huake Environmental Protection Engineering Co., Ltd., Guangzhou, Guangdong, China
ABSTRACT: Wenchuan was designated as one of the earthquake-stricken areas after the 2008 5.12-magnitude Wenchuan earthquake. During the decade following the earthquake, many post-earthquake landslides have occurred, seriously threatening the property of the local population’s lives and property. At present, there are few long-term spatiotemporal changes studies on landslides generated after the earthquake. The main aim of the present study is to use Landsat multi-period remote sensing image data, combined with post-earthquake landslide interpretation point data, to extract landslide point information from 2011, 2014, and 2018 to analyze the spatial evolution of landslides and define reliable susceptibility models for landslides in 2018 using an assessed certainty factor (CF), an integrated CF with random forest (RF), and an integrated CF with logistic regression (LR). The area under cure (AUC) was used to test the accuracy of the three models and obtain the most reflective susceptibility map. The results show that the RF-CF model produced the optimal result in terms of its AUC value (0.84). Over the past decade, the high-density area has become more concentrated than that of other grades and its coverage small, and its proportion has gradually decreased; the proportion of landslides in low-density areas has been increasing, and its distribution has become more concentrated. These research results fill the gap in the study of temporal and spatial changes in landslides after an earthquake and provide a scientific basis for disaster management and prediction in landslide-prone areas such as Wenchuan. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Certainty factor; Landslides; Logistic regression; Random forest; Susceptibility evaluation; Wenchuan
INDEX KEYWORDS: Decision trees; Disaster prevention; Disasters; Landslides; Logistic regression; Remote sensing; Certainty factors; Disaster management; Landslide susceptibility assessments; Landslide-prone areas; Remote sensing images; Spatio-temporal changes; Temporal and spatial changes; Wenchuan Earthquake; Earthquakes; assessment method; earthquake event; earthquake magnitude; ground motion; landslide; regression analysis; spatiotemporal analysis; China; Sichuan; Wenchuan
REFERENCES: Althuwaynee, Omar F., A novel ensemble decision tree-based CHi-squared Automatic Interaction Detection (CHAID) and multivariate logistic regression models in landslide susceptibility mapping, Landslides, 11, 6, pp. 1063-1078, (2014); 
Assilzadeh, Hamid, Landslide catastrophes and disaster risk reduction: A GIS framework for landslide prevention and management, Remote Sensing, 2, 9, pp. 2259-2273, (2010); 
Balek, Jan, A critical evaluation of the use of an inexpensive camera mounted on a recreational unmanned aerial vehicle as a tool for landslide research, Landslides, 14, 3, pp. 1217-1224, (2017); 
Ndvi Spatio Temporal Patterns and Climatic Controls Over Northern Patagonia Ecosystems, (2019); 
Broeckx, Jente, A data-based landslide susceptibility map of Africa, Earth-Science Reviews, 185, pp. 102-121, (2018); 
Budimir, M. E.A., A systematic review of landslide probability mapping using logistic regression, Landslides, 12, 3, pp. 419-436, (2015); 
Chauhan, Shivani, Landslide susceptibility zonation of the Chamoli region, Garhwal Himalayas, using logistic regression model, Landslides, 7, 4, pp. 411-423, (2010); 
Chen, Wei, Performance evaluation of GIS-based new ensemble data mining techniques of adaptive neuro-fuzzy inference system (ANFIS) with genetic algorithm (GA), differential evolution (DE), and particle swarm optimization (PSO) for landslide spatial modelling, Catena, 157, pp. 310-324, (2017); 
Chen, Wei, Landslide susceptibility modeling using integrated ensemble weights of evidence with logistic regression and random forest models, Applied Sciences (Switzerland), 9, 1, (2019); 
Chen, Wei, Performance evaluation of the GIS-based data mining techniques of best-first decision tree, random forest, and naïve Bayes tree for landslide susceptibility modeling, Science of the Total Environment, 644, pp. 1006-1018, (2018)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, X.-L., Lan, J.
AUTHOR FULL NAMES: Chen, Xiaoli (8346444100); Lan, Jian (57208618720)
8346444100; 57208618720
Impact of slope stability changes on landslide activity near the epicenter of the 2008 Wenchuan Ms8.0 earthquake, China
(2021) Bulletin of Engineering Geology and the Environment, 80 (7), pp. 5259 - 5270, Cited 6 times.
DOI: 10.1007/s10064-021-02147-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105386045&doi=10.1007%2Fs10064-021-02147-z&partnerID=40&md5=12c9905b6e71efbdcb07c6410ef1eff0

AFFILIATIONS: China Earthquake Administration, Beijing, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Strong earthquakes in mountainous regions can trigger massive landslides, and not just during the period of shaking. This study uses a time series of remote images to better understand the distribution of landslides near the epicenter of the 2008 Wenchuan Ms8.0 earthquake. We use multi-year high-resolution satellite images to interpret landslides and establish landslide inventories spanning from 2008 to 2019. Based on differencing pre-earthquake and post-earthquake digital elevation models (DEMs), we calculate the factor of safety (F<inf>s</inf>, i.e., resisting forces versus driving forces) of slopes using a simplified Newmark model. Results show that landslide occurrence highly relies on slope stability, demonstrated by both co-seismic and post-seismic landslide mapping. According to the F<inf>s</inf> analysis, which is closely related to the gradual slope change after the earthquake, most slopes within the study area stabilized after the 2008 Wenchuan earthquake, consistent with the decreasing trend of the landslide activity level. However, due to lithologic variation, the changes of post-earthquake slope stability may differ with landscape features in various regions and result in different geologic hazards. Thus, we highlight the necessity of continuous post-seismic monitoring and analysis of slope stability in different affected regions. The results of this work provide useful information for post-seismic infrastructure reconstruction and future earthquake disaster prevention in mountainous areas. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Co-seismic landslides; Newmark model; Post-seismic landslides; Remote sensing; Slope stability
INDEX KEYWORDS: Disaster prevention; Landslides; Safety factor; Slope protection; 2008 wenchuan earthquakes; Digital elevation model; Earthquake disaster; High resolution satellite images; Infrastructure reconstruction; Landslide inventories; Mountainous regions; Seismic landslides; Earthquakes; dynamic response; earthquake magnitude; earthquake trigger; landslide; remote sensing; seismic response; Sichuan earthquake 2008; slope failure; slope stability; China; Sichuan; Wenchuan
REFERENCES: Journal of Geophysical Research, (1974); 
Bishop, Alan W., The use of the slip circle in the stability analysis of slopes, Geotechnique, 5, 1, pp. 7-17, (1955); 
Brenguier, Florent, Postseismic relaxation along the San Andreas fault at Parkfield from continuous seismological observations, Science, 321, 5895, pp. 1478-1481, (2008); 
Castelli, Francesco, Landsliding events triggered by rainfalls in the enna area (South Italy), 2, pp. 39-47, (2013); 
Chang, Chengjung, Seismic displacements in slopes by limit analysis, Journal of Geotechcnical Engineering, 110, 7, pp. 860-874, (1984); 
Chen, Hongxin, A physically-based distributed cell model for predicting regional rainfall-induced shallow slope failures, Engineering Geology, 176, pp. 79-92, (2014); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Chen, Xiaoli, The relationship between the slope angle and the landslide size derived from limit equilibrium simulations, Geomorphology, 253, pp. 547-550, (2016); 
Chen, Xiaoli, A method for quick assessment of earthquake-triggered landslide hazards: a case study of the Mw6.1 2014 Ludian, China earthquake, Bulletin of Engineering Geology and the Environment, 78, 4, pp. 2449-2458, (2019); 
Chigira, Masahiro, Geological causes and geomorphological precursors of the Tsaoling landslide triggered by the 1999 Chi-Chi earthquake, Taiwan, Engineering Geology, 68, 3-4, pp. 259-273, (2003)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, L., Yang, D., Zhou, Y., Liu, P.
AUTHOR FULL NAMES: Zhang, Luming (58859996900); Yang, Dong (58859748000); Zhou, Yong (58859748100); Liu, Peng (58860247400)
58859996900; 58859748000; 58859748100; 58860247400
Genetic Model, Outbreak Features and Prevention of Post-seismic Deep-cut Trough-type Debris Flow： An Example from Yazhagou of Jiuzhaigou, Sichuan Province 震后深切拉槽型泥石流成因模式 、暴发特点与防 治 ：以四川九寨沟牙扎沟为例
(2021) Geoscience, 35 (3), pp. 744 - 752, Cited 0 times.
DOI: 10.19657/j.geoscience.1000-8527.2020.034
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183897420&doi=10.19657%2Fj.geoscience.1000-8527.2020.034&partnerID=40&md5=a83bb3d56314b1f2e55370104ad0bf26

AFFILIATIONS: Ltd, Chengdu, China; Ltd., Chengdu, Sichuan, China
ABSTRACT: Taking the Yazhagou debris flow in Jiuzhaigou earthquake area of Sichuan as an example, the outbreak features, the critical rainfall and the origin are studied in detail through geological surveys and historical data analysis. Based on the analysis of the formation cause, the corresponding prevention and control schemes are proposed. The results show that the debris flow is featured by being concealed, sudden, and destructive, with strong sediment transport capacity. The critical rainfall of debris flow outbreak is only half of that before the 12th May Wenchuan Earthquake, and no debris flow was reported in this area since 2014, indicating that the critical rainfall has a gradual recovery trend. Short bursts of heavy rainfall, deep-cut trough-type material supply, and elevated-steep topography are the root causes of the debris flow outbreak. The debris-flow genetic model includes the components of rainfall seepage, saturated rock and soil, mountain flood impact, deep-cut trough, headward erosion, scour erosion, bank erosion collapse, suspension and rolling. Controlling of Yazhagou debris flow in the earthquake area requires the protection standard and optimization of the control structure. Effective prevention and controlling method require mainly source control supplemented with debris obstruction. Our findings provide reference for the prevention and early warning of similar debris flows across the region. © China University of Geosciences.All rights reserved.
AUTHOR KEYWORDS: critical rainfall; deep-trough debris flow; genetic model; Jiuzhaigou area; outbreak feature
REFERENCES: Shieh, Cheng-Lun Lun, Variability in rainfall threshold for debris flow after the Chi-Chi earthquake in central Taiwan, China, International Journal of Sediment Research, 24, 2, pp. 177-188, (2009)
PUBLISHER: China University of Geosciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, S., Hu, K., Zhang, Q., Zhang, S., Hu, X., Tang, D.
AUTHOR FULL NAMES: Liu, Shuang (59157702500); Hu, Kaiheng (55648903800); Zhang, Qun (59855465400); Zhang, Shaojie (35249906100); Hu, Xudong (57204681802); Tang, Desheng (56660212400)
59157702500; 55648903800; 59855465400; 35249906100; 57204681802; 56660212400
Quantitative Analysis of the Effects of an Earthquake on Rainfall Thresholds for Triggering Debris-Flow Events
(2021) Frontiers in Earth Science, 9, art. no. 676470, Cited 10 times.
DOI: 10.3389/feart.2021.676470
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107990607&doi=10.3389%2Ffeart.2021.676470&partnerID=40&md5=a5e22ccc356326f847d974af9e431790

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Sichuan Institute of Land and Space Ecological Restoration and Geological Hazard Prevention, Chengdu, China; College of Civil Engineering and Architecture, Qingdao, Shandong, China; China Three Gorges University, Yichang, Hubei, China
ABSTRACT: The impacts of destructive earthquakes on rainfall thresholds for triggering the debris flows have not yet been well investigated, due to lacks of data. In this study, we have collected the debris-flow records from the Wenchuan, Lushan, and Jiuzhaigou earthquake-affected areas in Sichuan Province, China. By using a meteorological dataset with 3 h and 0.1° resolutions, the dimensionless effective rainfall and rainfall intensity-duration relationships were calculated as the possible thresholds for triggering the debris flows. The pre- and post-seismic thresholds were compared to evaluate the impacts of the various intensities of earthquakes. Our results indicate that the post-quake thresholds are much smaller than the pre-seismic ones. The dimensionless effective rainfall shows the impacts of the Wenchuan, Lushan, and Jiuzhaigou earthquakes to be ca. 26, 27, and 16%, respectively. The Wenchuan earthquake has the most significant effect on lowering the rainfall intensity-duration curve. Rainfall threshold changes related to the moment magnitude and focal depth are discussed as well. Generally, this work may lead to an improved post-quake debris-flow warning strategy especially in sparsely instrumented regions. © Copyright © 2021 Liu, Hu, Zhang, Zhang, Hu and Tang.
AUTHOR KEYWORDS: debris flows; disaster prevention; early warning; regional rainfall threshold; seismic effects
INDEX KEYWORDS: Debris; Disaster prevention; Rain; Affected area; Debris flows; Early warning; Effective rainfall; Flow events; Rainfall intensity durations; Rainfall thresholds; Regional rainfall threshold; Seismic effect; Sichuan province; Earthquakes; debris flow; disaster management; earthquake event; earthquake intensity; hazard assessment; quantitative analysis; rainfall; seismic response; seismicity; Sichuan earthquake 2008; threshold; trigger mechanism; China; Jiuzhaigou National Park; Lushan [Sichuan]; Sichuan; Wenchuan
REFERENCES: Berti, Matteo, Physical Interpretation of Rainfall Thresholds or Runoff-Generated Debris Flows, Journal of Geophysical Research: Earth Surface, 125, 6, (2020); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Carr, Nicholas J., The influence of surface and precipitation characteristics on TRMM microwave imager rainfall retrieval uncertainty, Journal of Hydrometeorology, 16, 4, pp. 1596-1614, (2015); 
Chen, Hongey, The impact of landslide and debris flows triggered by Typhoon Mindulle in Taiwan, Quarterly Journal of Engineering Geology and Hydrogeology, 38, 3, pp. 301-304, (2005); 
Chen, Jinnchyi, Variability of impact of earthquake on debris-flow triggering conditions: Case study of Chen-Yu-Lan watershed, Taiwan, Environmental Earth Sciences, 64, 7, pp. 1787-1794, (2011); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, Activity and distribution of geohazards induced by the Lushan earthquake, April 20, 2013, Natural Hazards, 73, 2, pp. 711-726, (2014); 
Fan, Xuanmei, Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification, Landslides, 15, 5, pp. 967-983, (2018); 
Gariano, Stefano Luigi, How much does the rainfall temporal resolution affect rainfall thresholds for landslide triggering?, Natural Hazards, 100, 2, pp. 655-670, (2020); 
Guo, Xiaojun, Debris flows in the Lushan earthquake area: formation characteristics, rainfall conditions, and evolutionary tendency, Natural Hazards, 106, 3, pp. 2663-2687, (2021)
PUBLISHER: Frontiers Media SA
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Lu, L., Sun, G.
AUTHOR FULL NAMES: Lu, Lu (57223961458); Sun, Gennian (55016952300)
57223961458; 55016952300
Crisis cycle of inbound tourism in the Chinese mainland from 2008 to 2018 and its market attribution 2008年-2018年我国大陆地区入境旅游的危机周期及市场归因
(2021) Journal of Zhejiang University, Science Edition, 48 (3), pp. 377 - 390, Cited 2 times.
DOI: 10.3785/j.issn.1008-9497.2021.03.014
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106624551&doi=10.3785%2Fj.issn.1008-9497.2021.03.014&partnerID=40&md5=4ec60ca72a2ff97168856f2f7d152963

AFFILIATIONS: School of Geography and Tourism, Shaanxi Normal University, Xi'an, Shaanxi, China
ABSTRACT: Since 2008, the Chinese mainland's inbound tourism crisis occurred consecutively. There are different opinions on its market attribution but lacking of systematic explanation framework. Based on the inbound passenger flow from 28 countries or regions in the world during 2000 to 2018, we analyze the changes of the inbound passenger flow in each source market and establish an attribution model for the decline of inbound tourism under the influence of sudden crisis events, starting from the three-circle market of China, peripheral countries in Asia and intercontinental markets and the three-cross section of tourist source, destination and tourism corridor. It shows that: the financial crisis in 2008 and the following European debt crisis are the economic causes of the origin cross section that influenced the decline in inbound flows in the three market; the Wenchuan earthquake in 2008 and the widespread haze pollution in 2012-2015 are the destination cross section security causes of the decline in the ratio of the intra-continental and intercontinental markets; the Diaoyu Islands issue in 2012-2015, the SAD issue during 2017 lead to a decrease in the number of Japanese and ROK's inbound tourists respectively, which is a political reason for the disruption of the tourism channel. In short, the crisis cycle of "two drops and two rises" in the Chinese mainland inbound tourism from 2008 to 2018 is due to the impact of several crisis events in the three-cross section of tourist source, destination and tourism channel, and is not simply caused by the increase in admission fees of scenic spots, inconvenience of tourist visa and poor service quality. This study provides new reference for international tourism research on sudden crisis event and has important implications for strengthening early warning of crisis events and expanding inbound tourism market. © 2021, Zhejiang University Press. All right reserved.
AUTHOR KEYWORDS: Crisis event; Inbound tourism; Multiple attribution; Temporal and spatial analysis; Three-circle market
REFERENCES: Economic Geography, (2018); 
Tourism Science, (2015); 
Tourism Science, (2014); 
Chen, Xiuqiong, Temporal change of regional disparity in Chinese inbound tourism, Dili Xuebao/Acta Geographica Sinica, 61, 12, pp. 1271-1280, (2006); 
Tourism Tribune, (2017); 
Resources Science, (2018); 
Tourism Tribune, (2015); 
Tourism Science, (2017); 
China Tourism, (2017); 
Special Zone Economy, (2009)
PUBLISHER: Zhejiang University Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, Y., Yao, L.
AUTHOR FULL NAMES: Huang, Yidan (36618861800); Yao, Lingkan (7201688064)
36618861800; 7201688064
Size distribution law of earthquake-Triggered landslides in different seismic intensity zones
(2021) Nonlinear Processes in Geophysics, 28 (2), pp. 167 - 179, Cited 14 times.
DOI: 10.5194/npg-28-167-2021
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104306515&doi=10.5194%2Fnpg-28-167-2021&partnerID=40&md5=14ff9592b2e80be7d82d0164467a469a

AFFILIATIONS: School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; MOE Key Laboratory of High-Speed Railway Engineering, Chengdu, Sichuan, China; Prevention in Land Transportation, National Engineering Research Center of Geological Disaster Prevention Technology in Land Transportation, Chengdu, Sichuan, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake in 2008 and Ms 7.0 Lushan earthquake in 2013 produced thousands of landslides in the southern region of the Longmen Mountains in China. We conducted field investigations and analyzed remote sensing data to determine the distribution law of earthquake-Triggered landslides. The results show a strong negative power law relationship between the size and frequency of landslides in VII, VIII, and IX seismic intensity zones, a weak power law in the X seismic intensity zone, and a lognormal distribution in the XI seismic intensity zone. Landslide density increases with increasing seismic intensity. A sandpile cellular automata model was built under the conceptual framework of self-organized criticality theory to simulate earthquake-induced landslides. Data from the simulations demonstrate that, with increasing disturbance intensity, the dynamical mechanism of the sandpile model changes from a strong power law to a weak power law and then to a lognormal distribution. Results from shaking table experiments of a one-sided slope sandpile show that, for peak ground acceleration (PGA) in the range of 0:075 0:125 g, the relation between the amount and frequency of sand follows a negative power law. For PGA between 0:15 and 0:25 g, the relation obeys a lognormal distribution. This verifies that the abovementioned distribution of earthquakeinduced landslides should be a universal law from a physical viewpoint and may apply to other areas. This new perspective may be used to guide the development of an inventory of earthquake-Triggered landslides and provide a scientific basis for their prediction. © 2021 BMJ Publishing Group. All rights reserved.
INDEX KEYWORDS: earthquake intensity; earthquake magnitude; earthquake trigger; landslide; Lushan earthquake 2013; seismic zone; seismicity; Sichuan earthquake 2008; size distribution; China; Longmen Mountains
REFERENCES: Self Organized Criticality in Astrophysics, (2011); 
Aschwanden, Markus J., 25 Years of Self-Organized Criticality: Solar and Astrophysics, Space Science Reviews, 198, 1-4, pp. 47-166, (2016); 
Bak, Per, Self-organized criticality: An explanation of the 1/f noise, Physical Review Letters, 59, 4, pp. 381-384, (1987); 
Bak, Per, Self-organized criticality, Physical Review A - Atomic, Molecular, and Optical Physics, 38, 1, pp. 364-374, (1988); 
Brunetti, Maria Teresa, Probability distributions of landslide volumes, Nonlinear Processes in Geophysics, 16, 2, pp. 179-188, (2009); 
Carrara, Alberto, Geomorphological and historical data in assessing landslide hazard, Earth Surface Processes and Landforms, 28, 10, pp. 1125-1142, (2003); 
Catani, Filippo, Landslide hazard and risk mapping at catchment scale in the Arno River basin, Landslides, 2, 4, pp. 329-342, (2005); 
Chen, Chienyuan, Discussion of landslide self-organized criticality and the initiation of debris flow, Earth Surface Processes and Landforms, 32, 2, pp. 197-209, (2007); 
Dahl, Mads Peter J., Magnitude-frequency characteristics and preparatory factors for spatial debris-slide distribution in the northern Faroe Islands, Geomorphology, 188, pp. 3-11, (2013); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011)
PUBLISHER: Copernicus GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhu, J., Song, J., Li, S.
AUTHOR FULL NAMES: Zhu, Jingbao (57222509045); Song, Jindong (55500901100); Li, Shanyou (36681438000)
57222509045; 55500901100; 36681438000
Rapid magnitude estimation for earthquake early warning based on SVM 基于支持向量机的地震预警震级快速估算研究
(2021) Zhendong yu Chongji/Journal of Vibration and Shock, 40 (7), pp. 126 - 134, Cited 10 times.
DOI: 10.13465/j.cnki.jvs.2021.07.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105296164&doi=10.13465%2Fj.cnki.jvs.2021.07.017&partnerID=40&md5=65f5deaad0e188c315860531dfde8af4

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Beijing, China
ABSTRACT: In order to more accurately estimate earthquake magnitude, using Japanese K-Net strong earthquake data within 3 seconds after P-wave triggering, 12 P-wave characteristic parameters including 4 kinds of amplitude parameter, period one, energy one and derivative one were selected as input to construct the prediction model of earthquake magnitude based on support vector machine for earthquake magnitude estimation (SVM-M). Results showed that compared with the traditional earthquake magnitude estimation "τ<inf>c</inf> method" and "P<inf>d</inf> method", the prediction error of the established SVM-M model is obviously reduced and not affected by variation of epicentral distance, and the overestimation of small earthquake is obviously improved. The case analysis results of main earthquake of 2016 Kumamoto earthquake (M<inf>j</inf>7.3) in Japan and 2008 Wenchuan earthquake (M<inf>s</inf>8.0) in China showed that the 3-second time window can't match the whole process of focal rupture, and the seismic magnitude is underestimated to a certain extent, but what happening can be determined as a large earthquake event within the short time window after P-wave triggering; the established SVM-M model can be used to rapidly estimate the seismic magnitude for earthquake early warning. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
AUTHOR KEYWORDS: Characteristic parameter; Earthquake early warning (EEW); Magnitude estimation; P-wave; Support vector machine (SVM)
INDEX KEYWORDS: Forecasting; Predictive analytics; Seismic waves; Support vector machines; 2008 wenchuan earthquakes; Amplitude parameters; Earthquake early warning; Earthquake magnitudes; Epicentral distances; Magnitude estimation; Short time windows; Strong earthquakes; Earthquakes
REFERENCES: undefined, (2013); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Olson, Erik L., The deterministic nature of earthquake rupture, Nature, 438, 7065, pp. 212-215, (2005); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Wu, Yih-Min Min, Experiment on an onsite early warning method for the Taiwan early warning system, Bulletin of the Seismological Society of America, 95, 1, pp. 347-353, (2005); 
Peng, Chaoyong, New τc regression relationship derived from all P wave time windows for rapid magnitude estimation, Geophysical Research Letters, 44, 4, pp. 1724-1731, (2017); 
Ziv, Alon, New frequency-based real-time magnitude proxy for earthquake early warning, Geophysical Research Letters, 41, 20, pp. 7035-7040, (2014); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Zollo, Aldo, Earthquake magnitude estimation from peak amplitudes of very early seismic signals on strong motion records, Geophysical Research Letters, 33, 23, (2006)
PUBLISHER: Chinese Vibration Engineering Society
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, M., Tang, C., Chen, M., Gong, L.
AUTHOR FULL NAMES: Li, Mingwei (57222871091); Tang, Chuan (35932953300); Chen, Ming (57199453005); Gong, Lingfeng (57215612725)
57222871091; 35932953300; 57199453005; 57215612725
Formation and Vulnerability Analysis for Debris Flow Occurred on 20 August 2019 in Banzi Catchment, Wenchuan County, Sichuan Province，China 四川省汶川县板子沟 8•20 泥石流成因与易损强度分析
(2021) Journal of Disaster Prevention and Mitigation Engineering, 41 (2), pp. 238 - 245, Cited 4 times.
DOI: 10.13409/j.cnki.jdpme.202004071
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152426027&doi=10.13409%2Fj.cnki.jdpme.202004071&partnerID=40&md5=cc94b3660aa53ed02bafc29657edc6f2

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: On August 20，2019，a large-scale mass landslide disaster occurred in Miansi，Sanjiang，and Shuimo，Wenchuan County，Sichuan Province，causing a large number of casualties and huge economic losses. This paper takes Banzi catchment in Miansi town as an example. Through interpretation and comparative analysis on remote sensing images before and after the 8.20 debris flow disaster，and on account of rainfall data at different altitudes in the watershed acquired by radar，the cause of the 8.20 debris flow disaster in Banzi catchment was analyzed from the perspective of source and rainfall. The FLO-2D numerical simulation method was used for analyzing and calculating the debris flow intensity index，which is the key parameter for the characterization of the debris flow danger. Based on the survey of typical building types in the Banzi catchment，a vulnerability curve was constructed to quantify the vulnerability strength of the affected body. The results show that the hazard and risk of debris flow in the Wenchuan earthquake area are still at a high level. Therefore，the occurrence law and risk of debris flow disaster in the strong earthquake area should be further explored to provide a scientific reference for early warning and effective engineering measures. © 2021 Editorial Office of Journal of Disaster Prevention and Mitigation Engineering. All rights reserved.
AUTHOR KEYWORDS: debris flow; FLO-2D; formation analysis; vulnerability curve
REFERENCES: Fuchs, Sven, Spatiotemporal dynamics: The need for an innovative approach in mountain hazard risk management, Natural Hazards, 68, 3, pp. 1217-1241, (2013); 
Progress in Geography, (2014); 
Journal of Natural Disasters, (2000); 
Journal of Natural Disasters, (1996); 
Chinese Journal of Geological Hazard and Control, (2001); 
Cutter, Susan C., Social vulnerability to environmental hazards, Social Science Quarterly, 84, 2, pp. 242-261, (2003); 
Journal of Catastrophology, (2005); 
Advance in Earth Sciences, (2012); 
Journal of Disaster Prevention and Mitigation Engineering, (2012); 
Journal of Disaster Prevention and Mitigation Engineering, (2012)
PUBLISHER: Editorial Office of Journal of Disaster Prevention and Mitigation Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiang, M., Yang, J., Yang, W., Wang, C., Duan, L.
AUTHOR FULL NAMES: Xiang, Mingshun (50662335500); Yang, Jin (24741227200); Yang, Wunian (7407756597); Wang, Chunjian (57218935132); Duan, Linsen (57218939395)
50662335500; 24741227200; 7407756597; 57218935132; 57218939395
Remote sensing dynamic monitoring of eco-water (Layer) conservation spatiotemporal variation in earthquake stricken areas
(2021) Desalination and Water Treatment, 219, pp. 276 - 286, Cited 0 times.
DOI: 10.5004/dwt.2021.26881
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105391833&doi=10.5004%2Fdwt.2021.26881&partnerID=40&md5=2e3ab87db9257b0f07cb6f6a32803a73

AFFILIATIONS: College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China; College of Earth Sciences, Chengdu University of Technology, Chengdu, China; Chengdu University of Technology, Chengdu, China
ABSTRACT: Water is the major guarantee for ecological restoration and a virtuous ecological cycle. This study is based on spatial information processing technology and mathematical modeling. The results demonstrate that the overall trend in regional modulus of eco-water conservation (MEC) and quantity of eco-water conservation (QEC) was dropped dramatically and then gradually increased from 2007 to 2017. The restoration process of eco-water conservation capacity cannot match both in time and space. Moreover, there are significant differences in MEC between different land types. Serious destruction of forestland are the leading factors of the 14.27% decrease in MEC of the study area after earthquake. Besides, there is an apparently positive correlation between MEC distribution and slope changes on the whole (p < 0.05), so the earthquake has the greatest impact on MEC if the surface slope is between 15° and 35°. Furthermore, the average MEC in areas below 3,000 m above sea level is higher than in other areas, and the MEC reduction rate after the earthquake is 31.85% higher than the areas above 3,000 m. In addition, the disturbance of MEC around faults was more often than that in other areas. © 2021 Desalination Publications. All rights reserved.
AUTHOR KEYWORDS: Dynamic change; Eco-water (layer); Ecological restoration; Remote sensing inversion model; Wenchuan earthquake
INDEX KEYWORDS: data inversion; information processing; nature conservation; remote sensing; restoration ecology; Sichuan earthquake 2008; spatiotemporal analysis; water management
REFERENCES: J Chengdu Univ Technol, (2008); 
Yang, Wunian, Novel quantitative measurement of eco-water layer based on quantitative remote sensing, Journal of Computational and Theoretical Nanoscience, 12, 9, pp. 2837-2841, (2015); 
Huang, Jin, The influence of eco-water retrieved by quantitative remote sensing on runoff in upper Minjiang River Basin, Earth Sciences Research Journal, 20, 3, pp. E1-E6, (2016); 
Stone, Richard, A deeply scarred land, Science, 324, 5928, pp. 713-714, (2009); 
Ni, Zhongyun, Decreasing trend of geohazards induced by the 2008 Wenchuan earthquake inferred from time series NDVI data, Remote Sensing, 11, 19, (2019); 
Ali, P. Yunus, Decadal vegetation succession from MODIS reveals the spatio-temporal evolution of post-seismic landsliding after the 2008 Wenchuan earthquake, Remote Sensing of Environment, 236, (2020); 
Zeng, Hongcheng, Assessing earthquake-induced tree mortality in temperate forest ecosystems: A case study from wenchuan, china, Remote Sensing, 8, 3, (2016); 
Ecology and Environmental Sciences, (2013); 
Bustamante, Javier, Effect of protection level in the hydroperiod of water bodies on Doñana's aeolian sands, Remote Sensing, 8, 10, (2016); 
Falkenmark, Malin, The new blue and green water paradigm: Breaking new ground for water resources planning and management, Journal of Water Resources Planning and Management - ASCE, 132, 3, pp. 129-132, (2006)
PUBLISHER: Desalination Publications
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shi, Q., Tang, C., Gong, L., Chen, M., Li, N., Zhou, W., Xiong, J., Tang, H., Wang, X.-D., Li, M.
AUTHOR FULL NAMES: Shi, Qingyun (57217257328); Tang, Chuan (35932953300); Gong, Lingfeng (57215612725); Chen, Ming (57199453005); Li, Ning (57211181445); Zhou, Wei (55443778400); Xiong, Jiang (57217517892); Tang, Hai (57216781878); Wang, Xiaodi (59292164400); Li, Mingwei (57222871091)
57217257328; 35932953300; 57215612725; 57199453005; 57211181445; 55443778400; 57217517892; 57216781878; 59292164400; 57222871091
Activity evolution of landslides and debris flows after the Wenchuan earthquake in the Qipan catchment, Southwest China
(2021) Journal of Mountain Science, 18 (4), pp. 932 - 951, Cited 23 times.
DOI: 10.1007/s11629-020-6494-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104129149&doi=10.1007%2Fs11629-020-6494-4&partnerID=40&md5=761ccc6ae5bf5fce246ab4cd14943995

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Chengdu Center of Geological Survey, China Geological Survey, Beijing, Beijing, China; School of Sciences, Xihua University, Chengdu, Sichuan, China; Sichuan Academy of Environmental Sciences, Chengdu, China
ABSTRACT: The Wenchuan earthquake that occurred on 12 May 2008 induced numerous landslides. Loose landslide materials were deposited on hillslopes, and deep channels were easily remobilized and transformed into debris flows by extreme rainstorms. Twelve years after the Wenchuan earthquake, debris flows were still active in the Qipangou Ravine in the quake-hit area. In this paper, we continuously tracked the spatiotemporal evolution of the landslides and vegetation restoration and evaluated the evolution of debris flow activity in the Qipan catchment with the aid of a GIS platform and field investigations from 2008 to 2019. We observed that the area with active landslides increased sharply immediately following the earthquake, and then decreased with time; however, the total area of landslides continued to increase from 6.93 km2 in 2008 to 10.55 km2 in 2019. The active landslides shifted towards lower angles and higher elevations after 2013. Since 2009, the vegetation coverage has been gradually increasing and approaching the coverage present before the earthquake as of 2019. The landslide activity was high and the vegetation recovery rates were rapidly rising during the first five years after the earthquake; the recovery rates then slowed over time. Therefore, we divided the evolution that occurred during the post landslide period into an active period (2008–2013), a self-adjustment period (2013–2026) and a stable period (after 2026). We then proposed a quantitative model to determine the trends of landslide activity rates and NDVI values in the catchment, which indicated that the landslide activities and postseismic vegetation restoration rates in this catchment will return to preseismic levels within approximately two decades. We also analysed the runout volumes of the debris flows after the earthquakes (Diexi and Wenchuan) and the standard deviation of the vegetation coverage and predicted that the debris flow activities will last for an additional 50 years or more. © 2021, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Evolution of debris flow activity; Qipan catchment; Seismic landslides; Vegetation recovery
INDEX KEYWORDS: debris flow; environmental restoration; GIS; landslide; Sichuan earthquake 2008; temporal evolution; vegetation cover; China
REFERENCES: Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Domènech, Guillem, Modelling the role of material depletion, grain coarsening and revegetation in debris flow occurrences after the 2008 Wenchuan earthquake, Engineering Geology, 250, pp. 34-44, (2019); 
Dou, Jie, Different sampling strategies for predicting landslide susceptibilities are deemed less consequential with deep learning, Science of the Total Environment, 720, (2020); 
Dou, Jie, Evaluating gis-based multiple statistical models and data mining for earthquake and rainfall-induced landslide susceptibility using the lidar dem, Remote Sensing, 11, 6, (2019); 
Fan, Xuanmei, Two multi-temporal datasets that track the enhanced landsliding after the 2008 Wenchuan earthquake, Earth System Science Data, 11, 1, pp. 35-55, (2019); 
Hu, Tao, A catastrophic debris flow in the Wenchuan Earthquake area, July 2013: characteristics, formation, and risk reduction, Journal of Mountain Science, 14, 1, pp. 15-30, (2017); 
Hu, Wei, Initiation processes for run-off generated debris flows in the Wenchuan earthquake area of China, Geomorphology, 253, pp. 468-477, (2016); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014); 
Huang, Runqiu, The long-term geologic hazards and consequent risk after the Wenchuan earthquake, 1, pp. 233-258, (2016)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qi, Y., Wu, L., Mao, W., Ding, Y., He, M.
AUTHOR FULL NAMES: Qi, Yuan (57207795977); Wu, Lixin (55714061400); Mao, Wenfei (57200606801); Ding, Yifan (57221013716); He, Miao (57217472217)
57207795977; 55714061400; 57200606801; 57221013716; 57217472217
Discriminating Possible Causes of Microwave Brightness Temperature Positive Anomalies Related with May 2008 Wenchuan Earthquake Sequence
(2021) IEEE Transactions on Geoscience and Remote Sensing, 59 (3), art. no. 9130912, pp. 1903 - 1916, Cited 30 times.
DOI: 10.1109/TGRS.2020.3004404
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101824156&doi=10.1109%2FTGRS.2020.3004404&partnerID=40&md5=a3f8ffcde72eef8065c63ed0c66d4944

AFFILIATIONS: Central South University, Changsha, Hunan, China; College of Resources and Civil Engineering, Shenyang, Liaoning, China
ABSTRACT: Based on the spatiotemporally weighted two-step method (STW-TSM), the spatiotemporal characteristics of the residual microwave brightness temperature (MBT) with the Mw7.9 Wenchuan earthquake on May 12, 2008 are revealed by satellite data from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) sensor. Two significant MBT positive anomalies are found to be exactly in spatial accordance with two geological Quaternary zones, and the detailed geometric information of the MBT positive anomaly is found to be correlated with the microwave frequencies. After eliminating other possible influential factors, including surface temperature, vegetation index, land-surface roughness, and surface soil moisture under the conditions of space, time, and magnitude, and according to the microwave radiative transfer model, the dielectric variation in the ground surface is suggested to be the primary contributor of the MBT positive anomaly. The positive-hole (P-hole) theory is applied to interpret the geological preference of the MBT positive anomalies through a chain process: crustal stress enhancing - P-hole producing and flowing down stress gradients - surface P-hole accumulating - dielectric constant decreasing - and microwave radiation increasing. The stress-resulting effect of the dielectric decrease on MBT the increase provides a novel mechanism for microwave remote-sensing monitoring of crustal stress field alteration, earthquake preparation, and upcoming shocks. This research has a particular significance for searching potential georelations between the tectonic earthquake preparation and the abnormal satellite MBT. © 1980-2012 IEEE.
AUTHOR KEYWORDS: Dielectric constant; earthquake anomaly; microwave brightness temperature (MBT); positive hole; Quaternary; remote sensing
INDEX KEYWORDS: Discriminators; Earthquakes; Geology; Luminance; Microwaves; Radiative transfer; Remote sensing; Soil moisture; Surface roughness; Temperature; 2008 wenchuan earthquakes; Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E); Geometric information; Microwave brightness temperature; Microwave radiative transfer model; Microwave remote sensing; Spatiotemporal characteristics; Surface soil moisture; Microwave sensors; brightness temperature; remote sensing; Sichuan earthquake 2008; soil moisture; spatiotemporal analysis; surface roughness; surface temperature; vegetation index
REFERENCES: Maeda, Takashi, Detection algorithm of earthquake-related rock failures from satellite-borne microwave radiometer data, IEEE Transactions on Geoscience and Remote Sensing, 48, 4 PART 1, pp. 1768-1776, (2010); 
Takano, Tadashi, Experiment and theoretical study of earthquake detection capability by means of microwave passive sensors on a satellite, IEEE Geoscience and Remote Sensing Letters, 6, 1, pp. 107-111, (2009); 
Singh, Ramesh P., Precursory signals using satellite and ground data associated with the Wenchuan Earthquake of 12 may 2008, International Journal of Remote Sensing, 31, 13, pp. 3341-3354, (2010); 
Remote Sens Technol Appl, (2025); 
Earthq Sci, (2011); 
Jie, Yang, Preliminary analysis of thermal anomalies before the 2010 Baja California M7.2 earthquake, Atmosfera, 26, 4, pp. 473-477, (2013); 
Zhang, Bin, Statistical analysis of microwave radiation anomaly before earthquake: A case study of Kamchatka Peninsula, Acta Seismologica Sinica, 40, 1, pp. 98-107, (2018); 
Jing, Feng, Passive microwave response associated with two main earthquakes in Tibetan Plateau, China, Advances in Space Research, 62, 7, pp. 1675-1689, (2018); 
Jing, Feng, Land–Atmosphere–Meteorological coupling associated with the 2015 Gorkha (M 7.8) and Dolakha (M 7.3) Nepal earthquakes, Geomatics, Natural Hazards and Risk, 10, 1, pp. 1267-1284, (2019); 
Zhao, Biqiang, Ionospheric total electron content variations prior to the 2008 Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3545-3557, (2010)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, H.-J., Zhu, H.-H., Li, Y.-H., Hu, W., Shi, B.
AUTHOR FULL NAMES: Li, Haojie (57219417270); Zhu, Honghu (12140186000); Li, Yuanhai (27172209900); Hu, Wei (42361224100); Shi, Bin (7402545779)
57219417270; 12140186000; 27172209900; 42361224100; 7402545779
Fiber Bragg grating-based flume test to study the initiation of landslide-debris flows induced by concentrated runoff
(2021) Geotechnical Testing Journal, 44 (4), art. no. 20190290, Cited 19 times.
DOI: 10.1520/GTJ20190290
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092666486&doi=10.1520%2FGTJ20190290&partnerID=40&md5=e8436d74ad931f9bf88bea2601458a98

AFFILIATIONS: Nanjing University, Nanjing, Jiangsu, China; China University of Mining and Technology, Xuzhou, Jiangsu, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: In order to explore the initiation of landslide-debris flow caused by concentrated runoff, a flume test has been performed on soil samples taken from a debris flow site in Wenchuan earthquake area. The fiber Bragg grating (FBG) technology was used to measure the strain distribution information in the slope mass during erosion. Several hydrological sensors for monitoring pore water pressure and soil moisture were used to investigate their correlation with internal strain field. The test results show that the fiber optic sensing technique exhibited high sensitivity and precision in monitoring the slope deformation. The development of pore water pressures and soil moistures showed reasonable consistency with the dynamics of an infiltration. According to the strain measurements, there were four evolution stages during the initiation of landslide-debris induced by runoff, i.e., the water absorption stage, the deformation stage, the shear zone formation stage, and the fluidization stage. The results provide an improved insight into the mechanism of debris flow initiation and indicate the enormous potential of the FBG sensing technology in establishing an effective early warning system for landslides and debris flows. © © 2020 by ASTM International.
AUTHOR KEYWORDS: Concentrated runoff; Debris flows; Fiber Bragg grating; Flume test; Landslide; Pore water pressure; Strain measurement; Volumetric water content
INDEX KEYWORDS: Debris; Deformation; Earthquakes; Fluidization; Landslides; Pore pressure; Pressure distribution; Runoff; Soil moisture; Water absorption; Deformation stages; Early Warning System; Fiber-optic sensing; Internal strains; Pore-water pressures; Slope deformation; Strain distributions; Wenchuan Earthquake; Fiber Bragg gratings; debris flow; early warning system; fiber optics; fluidization; landslide; porewater; precision; runoff; shear zone; Sichuan earthquake 2008; soil moisture; strain analysis
REFERENCES: Acharya, Govind, The influence of shallow landslides on sediment supply: A flume-based investigation using sandy soil, Engineering Geology, 109, 3-4, pp. 161-169, (2009); 
Standard Practice for Description and Identification of Soils Visual Manual Procedure, (2009); 
Berti, Matteo, Experimental evidences and numerical modelling of debris flow initiated by channel runoff, Landslides, 2, 3, pp. 171-182, (2005); 
Cascini, Leonardo, Seasonal effects of rainfall on the shallow pyroclastic deposits of the Campania region (southern Italy), Landslides, 11, 5, pp. 779-792, (2014); 
Coe, Jeffrey A., Initiation conditions for debris flows generated by runoff at Chalk Cliffs, central Colorado, Geomorphology, 96, 3-4, pp. 270-297, (2008); 
Damiano, Emilia, A laboratory study on the use of optical fibers for early detection of pre-failure slope movements in shallow granular soil deposits, Geotechnical Testing Journal, 40, 4, pp. 529-541, (2017); 
Proceedings of the Second International Conference on Geotechnique Construction Materials and Environment, (2012); 
Glade, Thomas W., Linking debris-flow hazard assessments with geomorphology, Geomorphology, 66, 1-4 SPEC. ISS., pp. 189-213, (2005); 
Hu, Mingjian, Rainfall, landslide and debris flow intergrowth relationship in Jiangjia Ravine, Journal of Mountain Science, 8, 4, pp. 603-610, (2011); 
Hu, Wei, Flume tests to study the initiation of huge debris flows after the Wenchuan earthquake in S-W China, Engineering Geology, 182, PB, pp. 121-129, (2014)
PUBLISHER: ASTM International service@astm.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, B., Zhang, X., Ji, X., Xu, W.
AUTHOR FULL NAMES: Chen, Bo (57223226585); Zhang, Xuemian (57223234725); Ji, Xingyuan (57223216388); Xu, Wutong (57223250127)
57223226585; 57223234725; 57223216388; 57223250127
Research on social organizations participating in public crisis management in the internet era
(2021), art. no. 9407622, pp. 46 - 49, Cited 1 times.
DOI: 10.1109/PMIS52742.2021.00017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105349753&doi=10.1109%2FPMIS52742.2021.00017&partnerID=40&md5=cade569a63db221b78e3215f5e782adb

AFFILIATIONS: School of Literature, Wuhan University of Science and Technology, Wuhan, Hubei, China; School of Marxism, Chongqing Technology and Business University, Chongqing, China; School of Business Administration, Zhengzhou University, Zhengzhou, Henan, China
ABSTRACT: With the continuous and in-depth development of a diversified society, various emergencies have emerged one after another, causing society to face a turbulent situation, such as the 2008 Wenchuan earthquake, 2019 new crown pneumonia. In the Internet age, a single government department crisis management system can no longer meet the needs of crisis management. Social organizations need to use information technology platforms to respond quickly and assist the government in establishing a diversified governance system. This paper studies the role and function of social organizations and the dilemma of social organizations participating in public crisis governance under the overall environment of society. It is expected that the government will use the big data technology platform to establish a network governance system and effectively improve the role of social organizations in crisis governance. © 2021 IEEE.
AUTHOR KEYWORDS: Government; Internet age; Public crisis management; Social organization
INDEX KEYWORDS: 2008 wenchuan earthquakes; Crisis management systems; Governance systems; Government departments; Information technology platforms; Network governances; Public crisis managements; Social organizations; Earthquakes
REFERENCES: Research on the Participation of Non Profit Organizations in My Country in Public Crisis Management D, (2016); 
Research on the Participation of Social Organizations in Public Crisis Management in My Country D, (2016); 
Social Organization Participation in Public Crisis D, (2016); 
People S Forum, (2020); 
Journal of Shaanxi Administration Institute, (2020)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2021 International Conference on Public Management and Intelligent Society, PMIS 2021
CONFERENCE DATE: 2021-02-26 through 2021-02-28
CONFERENCE LOCATION: Virtual, Shanghai
CONFERENCE CODE: 168544
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Shi, Y., Li, J., Qin, H.-G., Wang, D.-S., Wang, J.-W., Sun, Z.-G.
AUTHOR FULL NAMES: Shi, Yan (55334687600); Li, Jun (57221574918); Qin, Hongguo (55532312100); Wang, Dongsheng (57193225371); Wang, Junwen (55742584100); Sun, Zhiguo (17343029700)
55334687600; 57221574918; 55532312100; 57193225371; 55742584100; 17343029700
Review on Seismic Performance of Bridge Double-column Bents 桥梁双柱式排架墩抗震性能研究进展述评
(2021) Zhongguo Gonglu Xuebao/China Journal of Highway and Transport, 34 (2), pp. 134 - 154, Cited 37 times.
DOI: 10.19721/j.cnki.1001-7372.2021.02.004
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102378320&doi=10.19721%2Fj.cnki.1001-7372.2021.02.004&partnerID=40&md5=4a9e03e2e9e9b31dc8a10d7017339f57

AFFILIATIONS: School of Civil Engineering, Lanzhou University of Technology, Lanzhou, Gansu, China; School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin, China; Key Laboratory of Roads and Railway Engineering Safety Control of Ministry of Education, Shijiazhuang Tiedao University, Shijiazhuang, Hebei, China; School of Civil Engineering, Institute of Disaster Prevention Science and Technology, Beijing, China
ABSTRACT: Bridge double-column bents are widely used in highway bridges of small or medium spans and urban viaducts around the world. However, bents have suffered serious damage in previous devastating earthquakes. To reveal the damage mechanism of bridge double-column bents during earthquakes, to develop bridge double-column bents with earthquake resistance, and to realize the life-cycle seismic performance design from double-column bents for bridge engineering, traffic lines, and the entire traffic network, research progress on the seismic performance of bridge double-column bents is reviewed. Reports of the damage to reinforced-concrete double-column bents during the Wenchuan earthquake and major earthquakes worldwide are summarized, and the damage characteristics are analyzed first. The main damage types include flexural failure, shear failure, and flexural-shear failure of columns, longitudinal cracking of tie beams and their joints with columns, and oblique cracking of cap beams caused by the punching, shearing, and crushing of cushion stones and shear keys. Subsequently, the research progress on the seismic performance of bridge double-column bents is reviewed with respect to seismic performance tests and numerical simulations of the bents, seismic performance of tie beams, damage control and resilience structure systems, accelerated bridge construction and its application problems in strong earthquake areas, seismic retrofit methods, and seismic design theories. Then, problems in the research on and applications of bridge double-column bents are discussed. Finally, the directions of future development for double-column bents and bridge systems are forecast based on the main development trends in the field of earthquake engineering, such as hybrid simulation testing, earthquake resilient structures and their transportation systems, multiple disasters and their coupling effect, life-cycle design, big data, and artificial intelligence. © 2021, Editorial Department of China Journal of Highway and Transport. All right reserved.
AUTHOR KEYWORDS: Bridge double-column bent; Bridge engineering; Earthquake resilient structure; Life-cycle design; Prefabricated bridge; Review; Seismic performance
INDEX KEYWORDS: Artificial intelligence; Life cycle; Numerical methods; Reinforced concrete; Safety engineering; Seismic design; Seismic waves; Accelerated bridge constructions; Development trends; Flexural-shear failures; Longitudinal cracking; Seismic Performance; Strong earthquakes; Transportation system; Wenchuan Earthquake; Earthquakes
REFERENCES: Bridge Seismic M, (1997); 
Research on Bridge Seismic Resistance, (2014); 
Seismic Retrofitting Manual for Highway Bridges, (1995); 
Report on Highways Damage in the Wenchuan Earthquake, (2012); 
Zong, Zhouhong, Seismic study of high piers of large-span bridges: An overview and research development, Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition), 43, 2, pp. 445-452, (2013); 
Earthquake Engineering and Engineering Dynamics, (2017); 
Li, Jianzhong, Research Progress on Bridge Seismic Design: Target from Seismic Alleviation to Post-earthquake Structural Resilience, Zhongguo Gonglu Xuebao/China Journal of Highway and Transport, 30, 12, pp. 1-59, (2017); 
Earthquake Engineering and Engineering Dynamics, (2018); 
Xiang, Nailiang, Passive seismic unseating prevention strategies implemented in highway bridges: A state-of-the-art review, Engineering Structures, 194, pp. 77-93, (2019); 
Kunnath, Sashi K., Inelastic response of the cypress viaduct to the Loma Prieta earthquake, Engineering Structures, 17, 7, pp. 485-493, (1995)
PUBLISHER: Chang'an University
DOCUMENT TYPE: Review
PUBLICATION STAGE: Final

Xiong, J., Tang, C., Chen, M., Zhang, X., Shi, Q., Gong, L.
AUTHOR FULL NAMES: Xiong, Jiang (57217517892); Tang, Chuan (35932953300); Chen, Ming (57199453005); Zhang, Xianzheng (57219298270); Shi, Qingyun (57217257328); Gong, Lingfeng (57215612725)
57217517892; 35932953300; 57199453005; 57219298270; 57217257328; 57215612725
Activity characteristics and enlightenment of the debris flow triggered by the rainstorm on 20 August 2019 in Wenchuan County, China
(2021) Bulletin of Engineering Geology and the Environment, 80 (2), pp. 873 - 888, Cited 64 times.
DOI: 10.1007/s10064-020-01981-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092106027&doi=10.1007%2Fs10064-020-01981-x&partnerID=40&md5=6da93776a1fb2497df1ffe0f377df895

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Debris flow activity increased after the Wenchuan earthquake, and many debris flows continue to occur. Recently, a catastrophic debris flow event was triggered by strong rainfall on 20 August 2019 in Wenchuan County, China. The main purposes of this article are to analyse the activity characteristics of this disaster and further to analyse the long-term activity of debris flow in Wenchuan County based on the analysis results of this disaster. According to a field survey and remote sensing image interpretation, this strong rainfall triggered 15 debris flows that occurred simultaneously in the large watershed in northern Wenchuan County, and they were characterised by strong channel erosion and a disaster chain effect. The activity and sediment supply capacity of landslides have decreased significantly, and the landslides that provided materials for this debris flow event are mainly distributed on both banks of tributaries. The amounts of triggering rainfall and antecedent accumulated rainfall for this debris flow event were 13.7 mm and 47.1 mm, respectively. In addition, the channel runoff formed by strong short-duration rainfall eroded the channel deposits, and temporary check dams failed due to slope failures; these are the main causes for debris flows in the next period. Analyses of the debris flow volume versus watershed area and the maximum erosion modulus prove that the debris flow activity in Wenchuan County is decreasing with time, but more than 5~10 years will be required to recover to the pre-earthquake level. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Debris flow; Debris flow activity; Sediment supply; Strong rainfall; Wenchuan earthquake
INDEX KEYWORDS: Debris; Disasters; Earthquakes; Erosion; Landslides; Rain; Remote sensing; Storms; Watersheds; Accumulated rainfall; Debris flow activities; Large watersheds; Pre-earthquake levels; Remote sensing image interpretations; Short duration rainfalls; Watershed areas; Wenchuan Earthquake; Runoff; debris flow; disaster management; extreme event; landslide; precipitation intensity; sediment transport; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: Chang, Ming, Evolution process of sediment supply for debris flow occurrence in the Longchi area of Dujiangyan City after the Wenchuan earthquake, Landslides, 12, 3, pp. 611-623, (2015); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Chen, N. Sh, The processes and mechanism of failure and debris flow initiation for gravel soil with different clay content, Geomorphology, 121, 3-4, pp. 222-230, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018); 
Fan, Xuanmei, Earthquake-Induced Chains of Geologic Hazards: Patterns, Mechanisms, and Impacts, Reviews of Geophysics, 57, 2, pp. 421-503, (2019); 
Fan, Xuanmei, Two multi-temporal datasets that track the enhanced landsliding after the 2008 Wenchuan earthquake, Earth System Science Data, 11, 1, pp. 35-55, (2019); 
Ge, Yonggang, Catastrophic debris flows on July 10th 2013 along the Min River in areas seriously-hit by the Wenchuan earthquake, Journal of Mountain Science, 12, 1, pp. 186-206, (2015); 
Guo, Xiaojun, Intensity-duration threshold of rainfall-triggered debris flows in the Wenchuan Earthquake affected area, China, Geomorphology, 253, pp. 208-216, (2016)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wei, Y., Li, J., Chen, Y., Gao, J.
AUTHOR FULL NAMES: Wei, Yongming (35216412200); Li, Jiannan (57222031033); Chen, Yu (56200332700); Gao, Jinfeng (57222021029)
35216412200; 57222031033; 56200332700; 57222021029
Research on optical remote sensing characteristics of coseismic surface rupture of different types of seismogenic faults
(2021) Quaternary Sciences, 41 (6), pp. 1513 - 1531, Cited 10 times.
DOI: 10.11928/j.issn.1001-7410.2021.06.01
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135752942&doi=10.11928%2Fj.issn.1001-7410.2021.06.01&partnerID=40&md5=7564dadc37cd2f7d9350b1da76c86693

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The improvement of the ability to quickly acquire optical remote sensing data with meter scale/sub-meter scale resolution by multi-platforms and multi-sensors makes it possible to understand the spatial distribution, single rupture scale, plane combination features of co-seismic surface rupture zones timely and overally and analyze the characteristics of seismogenic faults during post-earthquake emergency accurately. In this article, 2001 MS8.1 west of Kunlunshan pass earthquake in Qinghai, 2008 MS8.0 Wenchuan earthquake in Sichuan, 2010 MS7.1 Yushu earthquake in Qinghai and 2014 MS7.3 Yutian earthquake in Xinjiang are selected as typical examples of large earthquakes. The post-earthquake GF-2 satellite remote sensing data of Kunlunshan pass earthquake(14 scenes, coverd by almost all surface rapture zones), Yushu earthquake(2 scenes, west of Jiegu Town) and Yutian earthquake(3 scenes, coverd by almost all surface fracture zones), WorldView-2 satellite remote sensing data at 6 well preserved surface fracture points of Wenchuan earthquake, Landsat-7 satellite remote sensing data of Kunlunshan pass earthquake(3 scenes, most of all surface fracture zones) and some aerial remote sensing data of the worst-affected disaster areas of Wenchuan earthquake(to north Yingxiu Town in Wenchaun County) and Yushu earthquake(Jiegu Town) are used as the main optical remote sensing information sources at meter/sub-meter scale. After the analysis of the applicability of remote sensing technology in surface fracture identification, their remote sensing interpretation signs of micro-tectonic landforms and horizontal faulted landforms are established based on the geometric and tonal features. The micro-tectonic landforms of surface rupture basic units include different types of fault scarps, water fall, seismic depression, seismic fractures, mole track, extrusion uplift/compression ridge, pull-apart basin, fault sag pond, fault valley and so on. The horizontal faulted landform results from dislocation of geologic bodies/surface features, such as river system, river terrace, diluvial fan(upland), lacustrine platform road, field ridge and so on. According to remote sensing analysis of spatial distribution characteristics of different surface rupture basic units, the plane combination features can be improved and the properties of seismogenic faults may be determined quickly and accurately. For strike-slip earthquake, the theory of Riedel shear pattern can be used to analyze the spatial relationship between the main rupture zone and the secondary rupture zones of strike-slip earthquake and that of the conjugate shear rupture zones, so as to grasp the possible spatial locations and plane combination characteristics of surface ruptures accurately and completely. The study results of optical remote sensing of co-seismic surface rupture of different types of seismogenic faults can provide technical support for rapid identification of co-seismic surface rupture during post-earthquake emergency. The results of optical remote sensing analysis of coseismic surface rupture in large earthquakes can not only provide important auxiliary information basis for judging the spatial extension and type of seismogenic faults and correcting the seismic intensity map accurately, but aslo guide the scientific investigation of surface rupture after earthquake. © 2021, Science Press (China). All rights reserved.
AUTHOR KEYWORDS: basic unit of coseismic surface rupture; optical remote sensing; plane combined characteristics of surface rupture; Seismogenic fault
REFERENCES: Xiwei, Xu, Evidence and methods for determining the safety distance from the potential earthquake surface rupture on active fault, Dizhen Dizhi, 24, 4, pp. 470-483, (2002); 
Geology of Earthquakes, (1997); 
Catalogue of Chinese Modern Earthquakes, (1999); 
Study on Active Faults 2, (1992); 
Sun, Wen, Interpretation and analysis of the fine fault geo-metry based on high-resolution DEM data derived from UAV photogrammetric technique: a case study of Tangjiapo site on the Haiyuan Fault, Dizhen Dizhi, 41, 6, pp. 1350-1365, (2019); 
Quaternary Sciences, (2008); 
Progress in Geophysics, (2016); 
Seismology and Geology, (1983); 
Acta Geophys Sin, (1976); 
Guo, Hui, New evidence for the distribution of surface rupture zone of the 1976 M s 7. 8 Tangshan earthquake, Dizhen Dizhi, 33, 3, pp. 506-524, (2011)
PUBLISHER: Science Press (China)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lei, Y., Wang, B., Liu, J., Zhao, Y.
AUTHOR FULL NAMES: Lei, Yaqin (57481972800); Wang, Bo (56537149600); Liu, Jun (57195265955); Zhao, Ying (57825304300)
57481972800; 56537149600; 57195265955; 57825304300
Spatiotemporal Evolution of the Cognitive Image of a Tourism Destination: An Explorative Analysis in Chengdu Based on Online Reviews 基于游客感知的成都旅游目的地认知形象演变研究
(2021) Tropical Geography, 41 (5), pp. 1110 - 1119, Cited 6 times.
DOI: 10.13284/j.cnki.rddl.003384
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126628596&doi=10.13284%2Fj.cnki.rddl.003384&partnerID=40&md5=02b8482dc8ef8b5ab5234719500c40d2

AFFILIATIONS: School of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong, China; Sun Yat-Sen University, Guangzhou, Guangdong, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, Guangdong, China; Guangdong Key Laboratory for Urbanization and Geo-simulation, Guangzhou, China; School of Tourism, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: It has become increasingly common for tourists to share their personal travel experiences on social media. This user-generated content with spatial references provides a rich database for tracing the evolution of the cognitive image of a tourism destination over a long period of time. This is helpful for local authorities to improve destination management and marketing by prompting image adjustment and tourism product optimization to satisfy tourists' expectations. In this study, data on online travels on Ctrip.com, one of the most popular tourism websites in China, were collected and analyzed to reveal the spatiotemporal evolution of the cognitive image of Chengdu from 2000 to 2019. Based on a specific tourism-related lexicon, keywords were identified and grouped in a list, following a framework comprising six dimensions: tourism attraction, tourism leisure and entertainment, public infrastructure, tourism infrastructure, tourism environment, and local atmosphere. The six dimensions were further divided into 18 sub-dimensions. Under this framework, the general trends and spatiotemporal evolution characteristics of Chengdu's cognitive image during this period were analyzed. Specifically, changes in the shares of identified keywords related to the six dimensions during the period explained the general trend characteristics, while changes in the standard deviational ellipse (SDE) of the distribution of identified keywords with spatial reference, together with changes in the shares of identified keywords related to the 18 sub-dimensions in detail, were adopted to vividly show the spatiotemporal evolution of Chengdu's cognitive image. Our findings revealed that Chengdu's cognitive image has experienced obvious spatiotemporal evolution across different sub-dimensions over the past 20 years. Generally, the cognitive image has became substantial during this period, with a continuous increase in the total share of identified keywords related to the cognitive image of online travels. In addition, the shares of keywords related to the six dimensions and 18 sub-dimensions varied across different stages. Particularly, the spatiotemporal evolution shows that (1) there is an evident shift from sightseeing tourism to experience tourism, as SDE shifts toward the southeastern urban area and the share of identified keywords highly related to experience consumption increases; (2) the city tends to be more "leisurely and carefree" in tourism, as SDE tends to be more concentrated in the urban area with a relatively high density of leisure attractions; and (3) the cognitive image responds to natural hazards promptly, as the size and directions of SDE vary accordingly, and the share of identified keywords related to public infrastructure, tourism infrastructure, and tourism environment reached a peak after the Wenchuan earthquake. Based on our findings, the mechanism forming Chengdu's cognitive image was further discussed from the perspectives of government, residents, and commercial organizations. Methodologically, this study proposes an approach based on text mining and analysis of online travel, typical spatial big data generated by tourists, to examine the cognitive image, which could be applied to other tourism destinations. Moreover, the mechanism framework based on the Chengdu case provides recommendations on tourism destination image management and marketing to improve responses to tourists' changing expectations regarding other tourism destinations. © The Author(s), 2021.
AUTHOR KEYWORDS: Chengdu; cognitive image; online travels; spatiotemporal characteristics; text mining; tourism destination
REFERENCES: Ayeh, Julian K., Do We Believe in TripAdvisor?" Examining Credibility Perceptions and Online Travelers' Attitude toward Using User-Generated Content, Journal of Travel Research, 52, 4, pp. 437-452, (2013); 
Beerli-Palacio, Asunción, Factors influencing destination image, Annals of Tourism Research, 31, 3, pp. 657-681, (2004); 
Boyd, Danah Michele, Critical questions for big data: Provocations for a cultural, technological, and scholarly phenomenon, Information Communication and Society, 15, 5, pp. 662-679, (2012); 
Chen, Yuchen, The effects of perceived relevance of travel blogs' content on the behavioral intention to visit a tourist destination, Computers in Human Behavior, 30, pp. 787-799, (2014); 
Tourism Tribune, (2017); 
undefined, (2002); 
Tourism Tribune, (2018); 
Gallarza, Martina G., Destination image: Towards a conceptual framework, Annals of Tourism Research, 29, 1, pp. 56-78, (2002); 
Gartner, William C., Image formation process, Journal of Travel and Tourism Marketing, 2, 2-3, pp. 191-216, (1994); 
Image A Factor in Tourism, (1971)
PUBLISHER: Editorial Committee of Tropical Geography
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, X.-W., Nie, G.-Z., Zeng, X., Xia, C.-X.
AUTHOR FULL NAMES: Fan, Xiwei (57192692501); Nie, Gaozhong (8728895400); Zeng, Xun (57712115100); Xia, Chaoxu (57201380475)
57192692501; 8728895400; 57712115100; 57201380475
TEXTURE FEATURE ANALYSIS OF THERMAL INFRARED IMAGE IN EARTHQUAKE DAMAGED AREAS
(2021) International Geoscience and Remote Sensing Symposium (IGARSS), 2021-July, pp. 1773 - 1776, Cited 0 times.
DOI: 10.1109/IGARSS47720.2021.9553361
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126035725&doi=10.1109%2FIGARSS47720.2021.9553361&partnerID=40&md5=b3ff2eea13a5c5798ff8a66d66c3019d

AFFILIATIONS: China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: The high resolution visible images from space borne or airborne platforms are widely used for earthquake building damage degree or type identification. But the visible images cannot be used for damage detection during night time. Considering the availability of thermal infrared (TIR) images to get land surface information all day long, this study try to study the possibility of using UAV based TIR image to detect earthquake damaged buildings. The study area is Beichuan county earthquake ruins protection site of the '5.12' Wenchuan earthquake in 2008, which located in Qushan Town, Beichuan Qiang Autonomous County, Mianyang city, Sichuan Province, China. And the TIR image are acquired using UAV of DJI M200 version 2 with the payload of ZENMUSE XT2. The study shows that the texture features in TIR images can be used for earthquake building damage degree detection with the accuracy of 73.4% and 71.6%, respectively, for the training and test dataset. © 2021 IEEE.
AUTHOR KEYWORDS: Building damages; Earthquake; Thermal infrared image
REFERENCES: Nowicki Jessee, M. Anna, A global dataset and model of earthquake-induced landslide fatalities, Landslides, 17, 6, pp. 1363-1376, (2020); 
Moya, Luis A., 3D gray level co-occurrence matrix and its application to identifying collapsed buildings, ISPRS Journal of Photogrammetry and Remote Sensing, 149, pp. 14-28, (2019); 
Dong, Laigen, A comprehensive review of earthquake-induced building damage detection with remote sensing techniques, ISPRS Journal of Photogrammetry and Remote Sensing, 84, pp. 85-99, (2013); 
Chen, Qihao, A Novel Statistical Texture Feature for SAR Building Damage Assessment in Different Polarization Modes, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13, pp. 154-165, (2020); 
Liu, Junru, Extraction of Earthquake-Induced Collapsed Buildings from Bioral VHR Images Using Object-Level Homogeneity Index and Histogram, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 12, 8, pp. 2755-2770, (2019); 
Soh, Leenkiat, Texture analysis of sar sea ice imagery using gray level co-occurrence matrices, IEEE Transactions on Geoscience and Remote Sensing, 37, 2 I, pp. 780-795, (1999); 
Schölkopf, Bernhard, New support vector algorithms, Neural Computation, 12, 5, pp. 1207-1245, (2000)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers Geoscience and Remote Sensing Society (GRSS)
CONFERENCE NAME: 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021
CONFERENCE DATE: 2021-07-12 through 2021-07-16
CONFERENCE LOCATION: Brussels
CONFERENCE CODE: 176845
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Guo, B., Subrahmanyam, M.V., Li, A., Liu, G.
AUTHOR FULL NAMES: Guo, Biyun (43161091100); Subrahmanyam, Mantravadi Venkata (7102420236); Li, Aiguo (57363470500); Liu, Guangzhe (57195741631)
43161091100; 7102420236; 57363470500; 57195741631
Application of remote sensing technology to monitoring of vegetation recovery and regional precipitation in wenchuan earthquake area: Case study of Longxi River Basin
(2021) Sensors and Materials, 33 (11), pp. 3693 - 3708, Cited 1 times.
DOI: 10.18494/SAM.2021.3337
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120657308&doi=10.18494%2FSAM.2021.3337&partnerID=40&md5=f0eb0c879ad60ca6f68eabc7eabcb329

AFFILIATIONS: Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, China; Qinghai University, Xining, Qinghai, China; Zhoushan Natural Resource Surveying and Mapping Design Center, Zhoushan, China; College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
ABSTRACT: The Wenchuan earthquake occurred in Sichuan Province, China, on May 12, 2008, and caused a large number of secondary geological disasters such as collapses, debris flows, and landslides, as well as extensive damage to local vegetation. The earthquake had an impact on the regional climate, seriously affecting the sustainable development of the regional environment and economy. In this study, the normalized difference vegetation index (NDVI) was used to characterize the vegetation status, which was calculated from images acquired by the MODIS sensor. Based on the vegetation cover and precipitation of the area affected by the Wenchuan earthquake over about 70 years, in this paper we analyze the characteristics of vegetation changes and their impact on the climate after the earthquake. The results revealed that the above secondary geological disasters caused by the earthquake destroyed vegetation. After the earthquake, NDVI decreased from 0.394 in 2007 to 0.383 on July 1, 2008, and then increased year by year to 0.413 in 2015, except in 2010. During the two years after the earthquake, several large-scale debris flows occurred in this area, damaging the surface vegetation, so the vegetation coverage was low in 2010. The change of the land cover has an indirect impact on the local precipitation. The annual and seasonal (except winter) precipitation trended downward from 1948 to 2018, with an annual average decrease of 1.6069 mm, but trended upward from 2008 to 2018, with an annual average increase of 14.012 mm, after the Wenchuan earthquake, indicating the recovery of vegetation. The increased vegetation promoted regional precipitation, but the interaction mechanism between the vegetation cover and the precipitation is complex. The effect of the vegetation differs in different regions and cannot be generalized. This study provides theoretical support for vegetation restoration and environmental management in areas with strong earthquakes. © MYU K.K.
AUTHOR KEYWORDS: Earthquake; Normalized difference vegetation index (NDVI); Precipitation; Remote sensing; Vegetation coverage
INDEX KEYWORDS: Debris; Disasters; Earthquakes; Environmental management; Geology; Remote sensing; Sustainable development; Annual average; Debris flows; Earthquake; Geological disaster; Normalized difference vegetation index; Remote-sensing; Vegetation cover; Vegetation coverage; Wenchuan Earthquake; Vegetation
REFERENCES: Research of Environmental Sciences, (2008); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Li, Zhenwang, Monitoring geologic hazards and vegetation recovery in the wenchuan earthquake region using aerial photography, ISPRS International Journal of Geo-Information, 3, 1, pp. 368-390, (2014); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Earth Science Frontiers, (2009); 
M8 0 Wenchuan Earthquake, (2010); 
Zhu, Mengcheng, A load-carrier perspective examination on the change of ecological environment carrying capacity during urbanization process in China, Science of the Total Environment, 714, (2020); 
J Climate, (1991); 
Bagley, Justin E., Drought and deforestation: Has land cover change influenced recent precipitation extremes in the Amazon?, Journal of Climate, 27, 1, pp. 345-361, (2014); 
J Climate, (1990)
PUBLISHER: M Y U Scientific Publishing Division
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Liu, Z., Zhang, J., Li, X., Chen, X.
AUTHOR FULL NAMES: Liu, Zhumei (49361845400); Zhang, Jingfa (14032411600); Li, Xue (49663402500); Chen, Xiaolin (55535923300)
49361845400; 14032411600; 49663402500; 55535923300
Long-Term Resilience Curve Analysis of Wenchuan Earthquake-Affected Counties Using DMSP-OLS Nighttime Light Images
(2021) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, pp. 10854 - 10874, Cited 15 times.
DOI: 10.1109/JSTARS.2021.3121789
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118822782&doi=10.1109%2FJSTARS.2021.3121789&partnerID=40&md5=bad397a6f85615d0fc27a35601f9157b

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Ministry of Emergency Management of China, Beijing, Beijing, China; Institute of Seismology, China Earthquake Administration, Beijing, China
ABSTRACT: This article demonstrates the potential of Defense Meteorological Satellite Program-Operational Linescan System stable nighttime light imagery for county-level earthquake resilience analysis. In this article, we firstly intercalibrated the nighttime light data and calculated the total sum of stable lights for each of the 261 counties affected by the Mw 7.9 Wenchuan earthquake from 1992 to 2013; secondly established an earthquake resilience model based on a nighttime light index to analyze the static and dynamic resilience of different counties; and lastly discussed the possible influencing factors from geographic, disaster-related, political and socioeconomic perspectives. The results first show that the static resilience of the extremely hard-hit counties in the Wenchuan earthquake-affected area increased from south to north along the long axis of the intensity zone, and plain and hilly counties exhibited faster short-term economic recovery than plateau and mountainous counties. Moreover, all extremely hard-hit counties except Wenchuan, Dujiangyan and Pingwu recovered to the normal level before 2011, whereas 52% of the counties in the generally affected areas recovered within three years. Through linear regression analysis, we also found that the different earthquake resilience capabilities across counties are most likely related to the soil liquefaction risk, average elevation, land-use degree, and socioeconomic factors, such as the industrial structure, the population age distribution, and social welfare. © 2008-2012 IEEE.
AUTHOR KEYWORDS: Earthquake; hazards; linear regression; remote sensing; rural areas
INDEX KEYWORDS: Earthquakes; Image analysis; Land use; Liquefaction; Recovery; Regression analysis; Risk assessment; Satellite imagery; Affected area; County level; Curve analysis; Defense meteorological satellite program / operational linescan system; Earthquake; Night time lights; Nighttime light image; Remote-sensing; Resilience model; Wenchuan Earthquake; Remote sensing; hazard assessment; regression analysis; remote sensing; rural area; Sichuan earthquake 2008
REFERENCES: Timmerman, Peter, Vulnerability, resilience and the collapse of society., 1, (1981); 
Advances in Earth Science, (2006); 
Chang, Stephanie E., Measuring improvements in the disaster resilience of communities, Earthquake Spectra, 20, 3, pp. 739-755, (2004); 
Rose, Adam Z., Economic resilience to natural and man-made disasters: Multidisciplinary origins and contextual dimensions, Environmental Hazards, 7, 4, pp. 383-398, (2007); 
Cutter, Susan C., The geographies of community disaster resilience, Global Environmental Change, 29, pp. 65-77, (2014); 
Aldrich, Daniel P., The power of people: Social capital's role in recovery from the 1995 Kobe earthquake, Natural Hazards, 56, 3, pp. 595-611, (2011); 
Chang, Stephanie E., Toward disaster-resilient cities: Characterizing resilience of infrastructure systems with expert judgments, Risk Analysis, 34, 3, pp. 416-434, (2014); 
Feder, Adriana, Coping and PTSD symptoms in Pakistani earthquake survivors: Purpose in life, religious coping and social support, Journal of Affective Disorders, 147, 1-3, pp. 156-163, (2013); 
Miles, Scott B., Modeling community recovery from earthquakes, Earthquake Spectra, 22, 2, pp. 439-458, (2006); 
Ainuddin, Syed, Community resilience framework for an earthquake prone area in Baluchistan, International Journal of Disaster Risk Reduction, 2, 1, pp. 25-36, (2012)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Qi, Y., Miao, Z., Wu, L., Ding, Y.
AUTHOR FULL NAMES: Qi, Yuan (57207795977); Miao, Zelang (55388064200); Wu, Lixin (55714061400); Ding, Yifan (57221013716)
57207795977; 55388064200; 55714061400; 57221013716
Seismic Microwave Brightness Temperature Anomaly Detection Using Multitemporal Passive Microwave Satellite Images: Ideas and Limits
(2021) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, art. no. 9468917, pp. 6792 - 6806, Cited 15 times.
DOI: 10.1109/JSTARS.2021.3093819
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110568029&doi=10.1109%2FJSTARS.2021.3093819&partnerID=40&md5=a40d55c146d9db89b21023cc2d3e9c7c

AFFILIATIONS: Central South University, Changsha, Hunan, China
ABSTRACT: Thermal anomalies related to large earthquakes are frequently reported, but focus on the inconsistencies and uncertainties in the uncovered results caused by the diverse method used, data used, and case studies is lacking. Taking seismic anomaly detection using passive microwave remote sensing as an example, this study revealed and illustrated the time series of microwave brightness temperature (MBT) anomaly associated with the May 2008 Wenchuan earthquake, the April 2010 Yushu earthquake, the April 2013 Lushan earthquake, and the April and May 2015 Nepal earthquake sequence. Cross comparison showed that the spatial distribution of MBT anomalies behaves differently with different background-removal methods. More regional and detailed MBT anomalies (but with weaker intensities) were obtained with higher frequency data, whereas more pronounced MBT anomalies (but with fewer details) were acquired with lower frequency data. The amplitude and spatial scales of MBT anomalies at H polarization were larger than that at V polarization. And 10.7 GHz at H polarization was recommended as the optimal band. The spatiotemporal evolutions of MBT anomalies associated with the four selected earthquake cases were compared and found to be closely related to respective earthquake preparation mechanisms. The aforementioned characteristics and uncertainties of MBT anomalies under different conditions were then discriminated and discussed based on microwave remote-sensing physics, and the applications and limitations of the present study were illustrated and analyzed. The findings of this study are of great significance for remote sensing data selection, reliability assessment, and result interpretation in seismic-anomaly research. © 2008-2012 IEEE.
AUTHOR KEYWORDS: Microwave brightness temperature (MBT); multitemporal image; seismic anomaly; time-series analysis; uncertainty
INDEX KEYWORDS: Earthquakes; Luminance; Microwaves; Polarization; Remote sensing; Temperature; Uncertainty analysis; 2008 wenchuan earthquakes; Earthquake sequences; Microwave brightness temperature; Microwave remote sensing; Passive microwave remote sensing; Preparation mechanisms; Reliability assessments; Spatiotemporal evolution; Anomaly detection; brightness temperature; earthquake event; remote sensing; satellite imagery; seismic data; temperature anomaly; time series analysis; uncertainty analysis
REFERENCES: Proc Acad Sci USSR, (1988); 
Tronin, A. A., Satellite thermal survey—A new tool for the study of seismoactive regions, International Journal of Remote Sensing, 17, 8, pp. 1439-1455, (1996); 
Tronin, A. A., Thermal IR satellite data application for earthquake research in Japan and China, Journal of Geodynamics, 33, 4-5, pp. 519-534, (2002); 
Chinese Science Bulletin, (1991); 
Saraf, Arun Kumar, Satellite detects surface thermal anomalies associated with the Algerian earthquakes of May 2003, International Journal of Remote Sensing, 26, 13, pp. 2705-2713, (2005); 
J Ind Geophys Union, (2005); 
Tramutoli, Valerio, Assessing the potential of thermal infrared satellite surveys for monitoring seismically active areas: The case of Kocaeli (İzmit) earthquake, August 17, 1999, Remote Sensing of Environment, 96, 3-4, pp. 409-426, (2005); 
Ouzounov, D., Satellite thermal IR phenomena associated with some of the major earthquakes in 1999-2003, Physics and Chemistry of the Earth, 31, 4-9, pp. 154-163, (2006); 
Wu, Lixin, GEOSS-based thermal parameters analysis for earthquake anomaly recognition, Proceedings of the IEEE, 100, 10, pp. 2891-2907, (2012); 
Qin, Kai, Discriminating satellite IR anomalies associated with the MS 7.1 Yushu earthquake in China, Advances in Space Research, 61, 5, pp. 1324-1331, (2018)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Guo, B., Xie, T., Subrahmanyam, M.V.
AUTHOR FULL NAMES: Guo, Biyun (43161091100); Xie, Taiping (57211318563); Subrahmanyam, Mantravadi Venkata (7102420236)
43161091100; 57211318563; 7102420236
Rainfall runoff in small watershed after wenchuan earthquake in western china based on remote sensing technology – a case study of jianping gully watershed
(2021) Polish Journal of Environmental Studies, 30 (3), pp. 2543 - 2552, Cited 3 times.
DOI: 10.15244/pjoes/129913
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104394672&doi=10.15244%2Fpjoes%2F129913&partnerID=40&md5=9f1a6fcedb393819751603c0c77fc3b8

AFFILIATIONS: Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, China; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai, China; Rural Economy Institute, Tongling University, Tongling, Anhui, China
ABSTRACT: On May 12, 2008, the Wenchuan earthquake in Sichuan Province, China caused surface damage, frequent landslides and debris flow, which further exacerbated the flash flood hazards. Two giant debris flows in Longxi River basin (located in Wenchuan county) occurred due to heavy rainfall after the earthquake: one was on August 13,2010, and the other on August 18,2010. Reduction and risk assessment of flash floods are the key issues in post-disaster reconstruction. Due to lack of sufficient research data, hydrological prediction models are employed as important and cost-efficient mitigation tools. Wenchuan earthquake area was taken as study site in order to illustrate the influence of geographical environmental changes on micro-mechanism of mountain floods. In this paper, hydrological observation and simulations using remote sensing data and the WMS HEC-1 model are carried out in the typical flood-hitting area (Jianping Gully basin, Dujiangyan City, Sichuan Province, China). The hydrological response of rainfall runoff is discussed. Precipitation over the study area affects the runoff and floods, however precipitation has positive relation with the peak flood discharge. The simulation shows that the peak flood and runoff volume on August 13, 2010 is close to a 10-year maximum. The flash flood was the main cause of the large debris flow on that event. However, peak runoff remains the same regardless of the intensity of rainfall, which may be due to the shape of the river basin and the initial conditions of the model setting. This paper can get better understanding of the forming mechanism, evolution process, distribution and assessment of torrential flood induced by a devastating earthquake. © 2021, HARD Publishing Company. All rights reserved.
AUTHOR KEYWORDS: Curve number; Earthquake; Rainfall-runoff modeling; Remote sensing; WMS HEC-1
REFERENCES: Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Cui, Peng, Foreword: Special issue on Wenchuan earthquake geohazards, Environmental Earth Sciences, 65, 4, (2012); 
Cui, Peng, Prediction of debris-flow danger area by combining hydrological and inundation simulation methods, Journal of Mountain Science, 8, 1, pp. 1-9, (2011); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Zanon, Franco, Hydrological analysis of a flash flood across a climatic and geologic gradient: The September 18, 2007 event in Western Slovenia, Journal of Hydrology, 394, 1-2, pp. 182-197, (2010); 
Halwatura, Devanmini, Application of the HEC-HMS model for runoff simulation in a tropical catchment, Environmental Modelling and Software, 46, pp. 155-162, (2013); 
Journal of Applied Sciences, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Study the Development Regularity and Control Measures in Longchi Before and After the 5 12 Earthquake, (2011); 
Journal of Mountain Science, (2011)
PUBLISHER: HARD Publishing Company
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Yang, W., Zhang, X., Luo, P.
AUTHOR FULL NAMES: Yang, Wanting (57215820018); Zhang, Xianfeng (55715151500); Luo, Peng (57205862222)
57215820018; 55715151500; 57205862222
Transferability of convolutional neural network models for identifying damaged buildings due to earthquake
(2021) Remote Sensing, 13 (3), art. no. 504, Cited 64 times.
DOI: 10.3390/rs13030504
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103510135&doi=10.3390%2Frs13030504&partnerID=40&md5=35489482c078bd0cc024f9bb36fda366

AFFILIATIONS: Institute of Remote Sensing and Geographic Information System, Peking University, Beijing, China; Department of Aerospace and Geodesy, Technische Universität München, Munich, Bayern, Germany
ABSTRACT: The collapse of buildings caused by earthquakes can lead to a large loss of life and property. Rapid assessment of building damage with remote sensing image data can support emergency rescues. However, current studies indicate that only a limited sample set can usually be obtained from remote sensing images immediately following an earthquake. Consequently, the difficulty in preparing sufficient training samples constrains the generalization of the model in the identification of earthquake-damaged buildings. To produce a deep learning network model with strong generalization, this study adjusted four Convolutional Neural Network (CNN) models for extracting damaged building information and compared their performance. A sample dataset of damaged buildings was constructed by using multiple disaster images retrieved from the xBD dataset. Using satellite and aerial remote sensing data obtained after the 2008 Wenchuan earthquake, we examined the geographic and data transferability of the deep network model pre-trained on the xBD dataset. The result shows that the network model pre-trained with samples generated from multiple disaster remote sensing images can extract accurately collapsed building information from satellite remote sensing data. Among the adjusted CNN models tested in the study, the adjusted DenseNet121 was the most robust. Transfer learning solved the problem of poor adaptability of the network model to remote sensing images acquired by different platforms and could identify disaster-damaged buildings properly. These results provide a solution to the rapid extraction of earthquake-damaged building information based on a deep learning network model. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: CNN; Disaster-damaged buildings; Earthquake; Transfer learning; VHR images
INDEX KEYWORDS: Antennas; Buildings; Convolution; Damage detection; Deep learning; Disasters; Earthquakes; Learning systems; Remote sensing; Transfer learning; 2008 wenchuan earthquakes; Aerial remote sensing; Collapsed buildings; Emergency rescue; Learning network; Rapid extraction; Remote sensing images; Satellite remote sensing data; Convolutional neural networks
REFERENCES: Creating A Global Building Inventory for Earthquake Loss Assessment and Risk Management, (2008); 
Proc Tenth World Conference on Earthquake Engineering, (1992); 
Proceedings of the 10th World Conference on Earthquake Engineering, (1992); 
Brunner, Dominik, Earthquake damage assessment of buildings using VHR optical and SAR imagery, IEEE Transactions on Geoscience and Remote Sensing, 48, 5, pp. 2403-2420, (2010); 
Huyck, Charles K., Towards rapid citywide damage mapping using neighborhood edge dissimilarities in very high-resolution optical satellite imagery-application to the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S255-S266, (2005); 
Janalipour, Milad, Building Damage Detection Using Object-Based Image Analysis and ANFIS from High-Resolution Image (Case Study: BAM Earthquake, Iran), IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9, 5, pp. 1937-1945, (2016); 
Proceedings of the 6th Asia Conference on Earthquake Engineering, (2016); 
Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
Ehrlich, Daniele, Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data, International Journal of Digital Earth, 2, 4, pp. 309-326, (2009); 
Li, Linlin, Building damage assessment from PolSAR data using texture parameters of statistical model, Computers and Geosciences, 113, pp. 115-126, (2018)
PUBLISHER: MDPI AG
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Lu, J., Li, S.
AUTHOR FULL NAMES: Lu, Jianqi (35292906700); Li, Shanyou (36681438000)
35292906700; 36681438000
Detailed analysis and preliminary performance evaluation of the FinDer: A real-time finite fault rupture detector for earthquake early warning 地震预警断层参数实时识别方法(FinDer)详解及其性能初步评价
(2021) World Earthquake Engineering, 37 (1), pp. 152 - 164, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101988722&partnerID=40&md5=024118db8a9e26a51ef7bb813b36fb9a

AFFILIATIONS: Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Beijing, China
ABSTRACT: In this paper, the technical details of the real time method (FinDer: Finite Fault Rupture Detector) for detection finite fault rupture parameters used in California ShakeAlert earthquake warning system in the United States are described. The performance of this method is evaluated by means of the observational data of the M<inf>w</inf>7. 6 Chichi earthquake occurred in 1999, the M<inf>s</inf>8. 0 Wenchuan earthquake occurred in 2008 and the M<inf>s</inf>7. 0 Lushan earthquake in 2013, and 80 small to moderate earthquakes recorded by the K-NET of Japan. The results show that under the condition of dense seismic network, the FinDer method can accurately predict the fault rupture length L, strike θ, and orientation of an earthquake in real time. FinDer method can only determine the length and strike of the fault under the condition that the fault rupture has occurred, and cannot predict the possible final length or strike of the fault. The accuracy of near/far-source region classification is the main factor affecting the accuracy of the method and the main source of the error of the method. © 2021, Editorial Board of World Earthquake Engineering. All right reserved.
AUTHOR KEYWORDS: Convolution; Earthquake early warning; Fault rupture parameters; Near/far source region classification; Real-time detection
INDEX KEYWORDS: detection method; early warning system; earthquake rupture; performance assessment; real time; seismic hazard; seismic source; seismic zone; California; United States
REFERENCES: Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Böse, Maren, Real-time Finite Fault Rupture Detector (FinDer) for large earthquakes, Geophysical Journal International, 191, 2, pp. 803-812, (2012); 
Böse, Maren, Finite-fault rupture detector (FinDer): Going real-time in californian shakealert warning system, Seismological Research Letters, 86, 6, pp. 1692-1704, (2015); 
Böse, Maren, FinDer v.2: Improved real-time ground-motion predictions forM2-M9 with seismic finite-source characterization, Geophysical Journal International, 212, 1, pp. 725-742, (2018); 
Fujinawa, Yukio, Japan's earthquake early warning system on 11 March 2011: Performance, shortcomings, and changes, Earthquake Spectra, 29, SUPPL.1, pp. S341-S368, (2013); 
Wells, Donald L., New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface displacement, Bulletin of the Seismological Society of America, 84, 4, pp. 974-1002, (1994); 
Wurman, Gilead, Toward earthquake early warning in northern California, Journal of Geophysical Research: Solid Earth, 112, 8, (2007); 
Yamada, Masumi, Real-time estimation of fault rupture extent using envelopes of acceleration, Bulletin of the Seismological Society of America, 98, 2, pp. 607-619, (2008); 
Yamada, Masumi, Real-time estimation of fault rupture extent using near-source versus far-source classification, Bulletin of the Seismological Society of America, 97, 6, pp. 1890-1910, (2007); 
Digital Image Processing Using Matlab, (2004)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jiang, Z., Fan, X., Siva Subramanian, S., Yang, F., Tang, R., Xu, Q., Huang, R.
AUTHOR FULL NAMES: Jiang, Zhuoyan (57220832908); Fan, Xuanmei (12752112800); Siva Subramanian, Srikrishnan (57214766764); Yang, Fan (57200696169); Tang, Ran (25639104000); Xu, Qiang (56506033600); Huang, Runqiu (55835407700)
57220832908; 12752112800; 57214766764; 57200696169; 25639104000; 56506033600; 55835407700
Probabilistic rainfall thresholds for debris flows occurred after the Wenchuan earthquake using a Bayesian technique
(2021) Engineering Geology, 280, art. no. 105965, Cited 56 times.
DOI: 10.1016/j.enggeo.2020.105965
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097720436&doi=10.1016%2Fj.enggeo.2020.105965&partnerID=40&md5=5b9fd7b3e2b301fcfa34be5cbc1ce545

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; School of Architecture and Civil Engineering, Chengdu University, Chengdu, Sichuan, China
ABSTRACT: Empirically derived rainfall thresholds of debris flows are used for regional-scale early warning. However, triggering rainfall intensities of post-seismic debris flows evolve with time, causing high false alarms since thresholds estimated by conventional methods ignore the uncertainty of non-triggering rainfall events. Based on 172 triggering rainfalls and 2396 non-triggering rainfalls from 2008 to 2013 after the Wenchuan earthquake, we analyzed the evolution of probabilistic rainfall thresholds for post-seismic debris flows using a Bayesian technique. We found, rainfall thresholds significantly decrease compared with pre-earthquake events initially and later tend to increase annually. Meanwhile, the triggering rainfall characteristics tend to gradually change from a short-duration high-intensity pattern to a long-duration and low-intensity pattern. We also checked the effect of antecedent precipitation on debris flows by defining an IET (inter-event time). Our results suggest the antecedent precipitation plays an important role in low-intensity long-duration rainfall-induced debris flows and has little effect on the short-duration high-intensity rainfall-induced debris flows. The characteristics of triggering rainfall for debris flows after the Wenchuan earthquake can be best reflected by IET = 7 h. By employing a Naïve Bayes algorithm, uncertainties of three rainfall threshold models, I-D (mean intensity-duration), I<inf>T</inf>-D (triggering intensity-duration), and I<inf>T</inf>-E (triggering intensity-cumulative rainfall) were investigated, and the I<inf>T</inf>-D model was found to perform best. The characteristics and evolution of debris flow rainfall thresholds over the years after the Wenchuan earthquake was best presented by the Bayesian probabilistic rainfall thresholds. We believe the results can be used to improve the precision of an early warning system for post-seismic debris flows. © 2020 Elsevier B.V.
AUTHOR KEYWORDS: Antecedent rainfall; Bayesian technique; Post-seismic debris flows; Probabilistic thresholds; Wenchuan earthquake
INDEX KEYWORDS: Debris; Rain; Uncertainty analysis; Bayesian techniques; Conventional methods; Cumulative rainfall; Early Warning System; High intensity rainfall; Rainfall characteristics; Rainfall thresholds; Wenchuan Earthquake; Earthquakes; Bayesian analysis; debris flow; early warning system; precipitation (climatology); probability; rainfall; Sichuan earthquake 2008
REFERENCES: Adams, Barry J., Meteorological data analysis for drainage system design, Journal of Environmental Engineering (United States), 112, 5, pp. 827-848, (1986); 
Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Berti, Matteo, Probabilistic rainfall thresholds for landslide occurrence using a Bayesian approach, Journal of Geophysical Research: Earth Surface, 117, 4, (2012); 
Pattern Recognition and Machine Learning, (2006); 
Bivand, Roger S., Implementing functions for spatial statistical analysis using the R language, Journal of Geographical Systems, 2, 3, pp. 307-317, (2000); 
Brunetti, Maria Teresa, Rainfall thresholds for the possible occurrence of landslides in Italy, Natural Hazards and Earth System Sciences, 10, 3, pp. 447-458, (2010); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Cannon, Susan H., Storm rainfall conditions for floods and debris flows from recently burned areas in southwestern Colorado and southern California, Geomorphology, 96, 3-4, pp. 250-269, (2008); 
Chang, Chiwen, Estimation of sediment volume of debris flow caused by extreme rainfall in Taiwan, Engineering Geology, 123, 1-2, pp. 83-90, (2011); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Y., Li, S., Song, J.
AUTHOR FULL NAMES: Wang, Yuan (57200062375); Li, Shanyou (36681438000); Song, Jindong (55500901100)
57200062375; 36681438000; 55500901100
Threshold-based evolutionary magnitude estimation for an earthquake early warning system in the Sichuan–Yunnan region, China
(2020) Scientific Reports, 10 (1), art. no. 21055, Cited 36 times.
DOI: 10.1038/s41598-020-78046-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097091900&doi=10.1038%2Fs41598-020-78046-2&partnerID=40&md5=4ce26780ac5e69929f8cd9c772f2010b

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: The Sichuan–Yunnan region is one of the most seismically vulnerable areas in China. Accordingly, an earthquake early warning (EEW) system for the region is essential to reduce future earthquake hazards. This research analyses the utility of two early warning parameters (τ<inf>c</inf> and P<inf>d</inf>) for magnitude estimation using 273 events that occurred in the Sichuan–Yunnan region during 2007–2015. We find that τ<inf>c</inf> can more reliably predict high-magnitude events during a short P-wave time window (PTW) but produces greater uncertainty in the low-magnitude range, whereas P<inf>d</inf> is highly correlated with the event magnitude depending on the selection of an appropriate PTW. Here, we propose a threshold-based evolutionary magnitude estimation method based on a specific combination of τ<inf>c</inf> and P<inf>d</inf> that both offers more robust advance magnitude estimates for large earthquakes and ensures the estimation accuracy for low-magnitude events. The advantages of the proposed approach are validated using data from 2016–2017 and the Ms 8.0 Wenchuan earthquake in an offline simulation. The proposed concept provides a useful basis for the future implementation of an EEW system in the Sichuan–Yunnan region. © 2020, The Author(s).
INDEX KEYWORDS: article; China; earthquake; magnitude estimation method; P wave; simulation; uncertainty
REFERENCES: Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Allen, Richard M., Earthquake early warning: Advances, scientific challenges, and societal needs, Annual Review of Earth and Planetary Sciences, 47, pp. 361-388, (2019); 
Hoshiba, Mitsuyuki, Review of the Nationwide Earthquake Early Warning in Japan during Its First Five Years, pp. 505-529, (2014); 
Encyclopedia of Earthquake Engineering, (2021); 
Early Warning for Geological Disasters, (2025); 
Sheen, Dong-Hoon, The first stage of an earthquake early warning system in South Korea, Seismological Research Letters, 88, 6, pp. 1491-1498, (2017); 
Mittal, Himanshu, Testing the performance of earthquake early warning system in northern India, Acta Geophysica, 67, 1, pp. 59-75, (2019); 
Clinton, John Francis, State-of-the art and future of earthquake early warning in the European region, Bulletin of Earthquake Engineering, 14, 9, pp. 2441-2458, (2016); 
Kohler, Monica D., Earthquake early warning shakealert system: West coast wide production prototype, Seismological Research Letters, 89, 1, pp. 99-107, (2018); 
Satriano, Claudio, PRESTo, the earthquake early warning system for Southern Italy: Concepts, capabilities and future perspectives, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 137-153, (2011)
PUBLISHER: Nature Research
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Yang, M., Jiang, L.-H., Hou, P., Zhai, J., Zhu, H.-S., Tan, T., Li, B.
AUTHOR FULL NAMES: Yang, Miao (57226091705); Jiang, Lahai (57221221792); Hou, Peng (7102218643); Zhai, Jun (59584826800); Zhu, Hanshou (57221219322); Tan, Ting (57221228100); Li, Bo (59811520800)
57226091705; 57221221792; 7102218643; 59584826800; 57221219322; 57221228100; 59811520800
Evaluation of Ecological Restoration 10 Years After the "5.12" Wenchuan Earthquake "5.12"汶川地震极重灾区灾后十年生态恢复状况评估
(2020) Resources and Environment in the Yangtze Basin, 29 (11), pp. 2541 - 2550, Cited 3 times.
DOI: 10.11870/cjlyzyyhj202011021
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098568352&doi=10.11870%2Fcjlyzyyhj202011021&partnerID=40&md5=82a2684551da21f72d6664493762f174

AFFILIATIONS: Sichuan Research Academy of Environmental Sciences, Chengdu, Sichuan, China; Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Ministry of Ecology and Environment Center for Statelite Application on Ecologyand Environment, Beijing, China
ABSTRACT: Ten years after the Wenchuan earthquake, the types and qualities of ecosystem, community structures, pland biodiversity and soil nutrient recovery conditions were comprehensively assessed at the most severely affected areas. Through the Remote interpretation of ecosystem types, the sample survey of ground vegetation, the inversion of GPP and LAI, as well as the determination of the soil organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, and available potassium in the soil. The results exhibited that the regional ecological system generally tends to incline towards stability and positive recovery according to the remote sensing interpretations. Although the bare surface area assessed in 2017 was higher compared to the one before the earthquake in 2007, the decrease in number is relative to the post-earthquake one in 2008. In terms of ecosystem quality, the average values received from GPP and LAI continuously rose after 2014 though quite slowly. It reflected the overall resilience of the regional ecosystem. However, some of the forest ecosystems damaged by the earthquake still have not returned to the original state. A part of the farmland in the Chengdu Plain has been converted into an urban construction land. By 2017 in the earthquake-damaged area, there was a significant increase in the number of plant species, dominated by pioneer species, such as Rosaceae, Compositae, and Gramineae, similar results as to those in 2009. The community structure found at the earthquake-damaged area has been well restored. In terms of vertical stratification, the community structure of the remaining areas has formed three layers of trees-shrub-herb, noting that there is only one layer of herb or shrub and herb combination in the arid valley area. Generally, the soil fertility condition at the control spot was proved healthier compared to the impaired areas where the situation continued to deteriorate. The bare soil area that was caused by the earthquake has shown an acceleration in the mineralization process, increasing content of available nutritional elements in the impaired sites achieved short-term yet the loss of nutrients and soil fertility proved to be taxing long-term. Hence, there have been formulations of numerous suggestions: Based on strengthening the supervision of geological hazards and preventing secondary disasters, the natural vegetation must be dominated by natural restoration in the high precipitation areas of Western China, in front of Longmen Mountain. The arid valley area is able to adapt the appropriate artificial restoration measures which follow the principle of "adaptation to local conditions and matching trees with the site", Meanwhile, the improvement of soil nutrient conditions and the promotion of vegetation restoration must be given more emphasis and attention. In the process of urban construction, on the other hand, the land and space management and essential farmland protection must be strengthened, so as the red line of ecological protection, as well as all kinds of protected areas, including basic farmland. © 2020, Science Press. All right reserved.
AUTHOR KEYWORDS: Community structure; Ecological restoration; Ecosystem structure; Plant biodiversity; Soil element; Wenchuan Earthquake
REFERENCES: Resources and Environment in the Yangtze Basin, (2016); 
Journal of Mountain Science, (2009); 
Journal of Mountain Science, (2010); 
Journal of Mountain Science, (2011); 
Journal of Plant Ecology, (2008); 
Ouyang, Zhiyun, Impact assessment of Wenchuan Earthquake on ecosystems, Shengtai Xuebao, 28, 12, pp. 5801-5809, (2008); 
undefined; 
Research of Environmental Sciences, (2008); 
Bulletin of Soil and Water Conservation, (2014); 
Disaster Science, (2019)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, M., Tang, C., Xiong, J., Shi, Q.Y., Li, N., Gong, L., Wang, X.-D., Tie, Y.
AUTHOR FULL NAMES: Chen, Ming (57199453005); Tang, Chuan (35932953300); Xiong, Junlin (57241703400); Shi, Qinyun (59039136000); Li, Ning (57211181445); Gong, Lingfeng (57215612725); Wang, Xiaodi (59292164400); Tie, Yu (58417356300)
57199453005; 35932953300; 57241703400; 59039136000; 57211181445; 57215612725; 59292164400; 58417356300
The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China
(2020) Geomorphology, 367, art. no. 107317, Cited 112 times.
DOI: 10.1016/j.geomorph.2020.107317
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086938983&doi=10.1016%2Fj.geomorph.2020.107317&partnerID=40&md5=05f75f26832f7f70f98ca90632fa336c

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan earthquake triggered numerous landslides and damaged vast areas of vegetation. Strong mountain earthquakes have long-term impacts on the activities of subsequent landslides. It is crucial for long-term geohazard risk assessment to investigate the spatio-temporal evolution of post-earthquake landslides. We used multi-year images from 2008 to 2018 to track the reactivation of coseismic landslides and newly occurring landslides to evaluate the influence of the Wenchuan earthquake on subsequent rain-induced landslides. With the aid of a GIS platform combined with field investigations, we analyzed the temporal and spatial evolutions of landslide activities over the past ten years and the factors controlling these changes. In addition, the process of vegetation recovery at landslide sites in the epicentral area was detected based on multi-year Landsat TM data after the Wenchuan earthquake. We observed that the total area of active landslides decreased significantly with time. In the first 5 years (2008–2013), the vegetation recovered quickly but was not well rehabilitated, and post-seismic landslides generally maintained high activity levels. Due to progressive revegetation and consolidation, most of the coseismic deposits along the hillslopes gradually stabilized. Subsequently (2013–2018), landslide activity weakened and mainly occurred in high and steep areas with poor vegetation recovery, particularly in proximity to the drainage network. Decreasing occurrence of rain-induced landslides was closely related to vegetation recovery in both time and space, and vegetation recovery could promote the reduction in post-earthquake landslide activities. We also proposed a quantitative model for the landslide rate in the epicentral area of the Wenchuan earthquake, which shows that the enhanced landslide rate reached its peak after the earthquake and will decrease to the pre-earthquake level in 25 years. The evolution of the post-seismic landslide activity can be categorized into four stages: high active period (2008–2013), low active period (2013–2018), recovery period (2018–2033), and stable period (after 2033). © 2020 Elsevier B.V.
AUTHOR KEYWORDS: Evolution; Landslide activity; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: coseismic process; earthquake damage; earthquake epicenter; earthquake magnitude; ground motion; landslide; Sichuan earthquake 2008; strong motion; temporal evolution; China
REFERENCES: Chang, Ming, Spatial distribution analysis of landslides triggered by the 2013-04-20 Lushan earthquake, China, Earthquake Engineering and Engineering Vibration, 15, 1, pp. 163-171, (2016); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Chigira, Masahiro, Geological causes and geomorphological precursors of the Tsaoling landslide triggered by the 1999 Chi-Chi earthquake, Taiwan, Engineering Geology, 68, 3-4, pp. 259-273, (2003); 
Journal of Mountain Science, (2008); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Cui, Peng, The mechanisms behind shallow failures in slopes comprised of landslide deposits, Engineering Geology, 180, pp. 34-44, (2014); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Domènech, Guillem, Modelling the role of material depletion, grain coarsening and revegetation in debris flow occurrences after the 2008 Wenchuan earthquake, Engineering Geology, 250, pp. 34-44, (2019); 
Dufresne, Anja, Process dependence of grain size distributions in rock avalanche deposits, Landslides, 14, 5, pp. 1555-1563, (2017); 
Fan, Xuanmei, Spatio-temporal evolution of mass wasting after the 2008 Mw 7.9 Wenchuan earthquake revealed by a detailed multi-temporal inventory, Landslides, 15, 12, pp. 2325-2341, (2018)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Z., Wang, L., Qiao, J., Uchimura, T., Wang, L.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Wang, Liyong (57213183655); Qiao, Jianping (24485090400); Uchimura, Taro (7007007474); Wang, Lin (55721353300)
24485723300; 57213183655; 24485090400; 7007007474; 55721353300
Application and verification of a multivariate real-time early warning method for rainfall-induced landslides: implication for evolution of landslide-generated debris flows
(2020) Landslides, 17 (10), pp. 2409 - 2419, Cited 42 times.
DOI: 10.1007/s10346-020-01402-w
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083215873&doi=10.1007%2Fs10346-020-01402-w&partnerID=40&md5=da817bde05953540cd6105797093f4fa

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Department of Civil & Environmental Engineering, Saitama University, Saitama, Saitama, Japan; Chuo Kaihatsu Corporation, Tokyo, Japan
ABSTRACT: Rainfall-induced landslides are a frequent and often catastrophic geological disaster, and the development of accurate early warning systems for such events is a primary challenge in the field of risk reduction. Understanding of the physical mechanisms of rainfall-induced landslides is key for early warning and prediction. In this study, a real-time multivariate early warning method based on hydro-mechanical analysis and a long-term sequence of real-time monitoring data was proposed and verified by applying the method to predict successive debris flow events that occurred in 2017 and 2018 in Yindongzi Gully, which is in Wenchuan earthquake region, China. Specifically, long-term sequence slope stability analysis of the in situ datasets for the landslide deposit as a benchmark was conducted, and a multivariate indicator early warning method that included the rainfall intensity-probability (I-P), saturation (S<inf>i</inf>), and inclination (I<inf>r</inf>) was then proposed. The measurements and analysis in the two early warning scenarios not only verified the reliability and practicality of the multivariate early warning method but also revealed the evolution processes and mechanism of the landslide-generated debris flow in response to rainfall. Thus, these findings provide a new strategy and guideline for accurately producing early warnings of rainfall-induced landslides. © 2020, The Author(s).
AUTHOR KEYWORDS: Debris flows; Early warning; Multivariate; Rainfall-induced landslide
INDEX KEYWORDS: Debris; Earthquakes; Rain; Reliability analysis; Early warning and prediction; Early Warning System; Early-warning method; Geological disaster; Rainfall induced landslides; Real time monitoring; Slope stability analysis; Wenchuan Earthquake; Landslides; catastrophic event; debris flow; early warning system; geological hazard; landslide; monitoring system; multivariate analysis; precipitation intensity; rainfall; real time; slope stability; China; Sichuan; Wenchuan
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Baum, Rex L., Estimating the timing and location of shallow rainfall-induced landslides using a model for transient, unsaturated infiltration, Journal of Geophysical Research: Earth Surface, 115, 3, (2010); 
Berti, Matteo, Field evidence of pore pressure diffusion in clayey soils prone to landsliding, Journal of Geophysical Research: Earth Surface, 115, 3, (2010); 
Cai, Huan, An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits, Geofluids, 2019, (2019); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Chae, Byung-gon, Landslide prediction, monitoring and early warning: a concise review of state-of-the-art, Geosciences Journal, 21, 6, pp. 1033-1070, (2017); 
Damiano, Emilia, Steep-slope monitoring in unsaturated pyroclastic soils, Engineering Geology, 137-138, pp. 1-12, (2012); 
Fan, Yongbo, Real-time monitoring instrument designed for the deformation and sliding period of colluvial landslides, Bulletin of Engineering Geology and the Environment, 76, 3, pp. 829-838, (2017); 
Feng, Wenkai, Disaster mechanism and stability analysis of shattered bedding slopes triggered by rainfall─a case study of Sanxicun landslide, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 35, 11, pp. 2197-2207, (2016); 
Godt, Jonathan W., Landsliding in partially saturated materials, Geophysical Research Letters, 36, 2, (2009)
PUBLISHER: Springer Science and Business Media Deutschland GmbH info@springer-sbm.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; HYBRID GOLD OPEN ACCESS

Cui, Y., Du, J., Wang, S., Zhang, Y., Li, X., Zou, Z., Jiang, L.
AUTHOR FULL NAMES: Cui, Yueju (36717262300); Du, Jianguo (7402574923); Wang, Shumin (55864780800); Zhang, Ying (57840615400); Li, Xinyan (57190426251); Zou, Zhenyu (56289776000); Jiang, Li (57221836406)
36717262300; 7402574923; 55864780800; 57840615400; 57190426251; 56289776000; 57221836406
Three-Dimensional Variations of Carbon Monoxide Concentration Associared with Wenchuan Earthquake Based on Airs Data
(2020) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 9324523, pp. 6615 - 6618, Cited 3 times.
DOI: 10.1109/IGARSS39084.2020.9324523
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102004510&doi=10.1109%2FIGARSS39084.2020.9324523&partnerID=40&md5=93c912e812df482d3d7c9651a4b79652

AFFILIATIONS: The United Laboratory of High-Pressure Physics and Earthquake Science, Beijing, Beijing, China; Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China; Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Earthquake Agency of Ningxia Hui Autonomous Region, China
ABSTRACT: It has been found that large amounts of gases emitted from the earth's crust into the atmosphere before, during and after the great earthquakes. The 12 May 2008 Wenchuan Ms 8.0 earthquake occurred in the Longmenshan fault zone in western Sichuan, China, which locates in the eastern margin of the Qinghai- Tibet Plateau. Spatial and temporal variations of total column (TotCO) and multiple layers (CO VMR) of CO differences associated with the Wenchuan earthquake were investigated using satellite data from AQUA AIRS in order to understand the lithospheric and atmospheric interactions during the seismic activity. The analyzing results indicated that anomalies of TotCO and multiple layers of CO VMR occurred along the fault zone, the peak values were found at the epicenter area, and the anomalies of TotCO and CO VMR appeared in the month of earthquake occurrence, which indicated that CO anomaly was closely related to the seismic and tectonic activities. The results could help to identify the earthquake anomalies and the meteorological anomalies. © 2020 IEEE.
AUTHOR KEYWORDS: CO VMR; DTS-V; TotCO; Wenchuan Earthquake
INDEX KEYWORDS: Carbon monoxide; Earth atmosphere; Faulting; Remote sensing; Structural geology; Atmospheric interaction; Carbon monoxide concentration; Dimensional variations; Earthquake anomalies; Earthquake occurrences; Longmenshan fault zone; Qinghai Tibet plateau; Spatial and temporal variation; Earthquakes
REFERENCES: Irwin, William Porter, Tectonic relations of carbon dioxide discharges and earthquakes., Journal of Geophysical Research, 85, B6, pp. 3115-3121, (1980); 
J Geophys Res, (1986); 
Toutain, Jean Paul, Gas geochemistry and seismotectonics: A review, Tectonophysics, 304, 1-2, pp. 1-27, (1999); 
Famin, Vincent, Earthquakes produce carbon dioxide in crustal faults, Earth and Planetary Science Letters, 265, 3-4, pp. 487-497, (2008); 
Zhou, Xiaocheng, Environmental impact of CO2, Rn, Hg degassing from the rupture zones produced by Wenchuan M s 8.0 earthquake in western Sichuan, China, Environmental Geochemistry and Health, 38, 5, pp. 1067-1082, (2016); 
Tronin, A. A., Remote sensing and earthquakes: A review, Physics and Chemistry of the Earth, 31, 4-9, pp. 138-142, (2006); 
Ganguly, Nandita D., Variation in atmospheric ozone concentration following strong earthquakes, International Journal of Remote Sensing, 30, 2, pp. 349-356, (2009); 
Singh, Ramesh P., Satellite detection of carbon monoxide emission prior to the Gujarat earthquake of 26 January 2001, Applied Geochemistry, 25, 4, pp. 580-585, (2010); 
Cui, Yueju, Anomalies of total column CO and O3 associated with great earthquakes in recent years, Natural Hazards and Earth System Sciences, 13, 10, pp. 2513-2519, (2013); 
Cui, Yueju, Satellite observation of CH4 and CO anomalies associated with the Wenchuan MS 8.0 and Lushan MS 7.0 earthquakes in China, Chemical Geology, 469, pp. 185-191, (2017)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society (GRSS)
CONFERENCE NAME: 2020 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2020
CONFERENCE DATE: 2020-09-26 through 2020-10-02
CONFERENCE LOCATION: Virtual, Waikoloa
CONFERENCE CODE: 167212
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, Y., Wei, Y., Wang, Q., Chen, F., Lu, C., Lei, S.
AUTHOR FULL NAMES: Chen, Yu (56200332700); Wei, Yongming (35216412200); Wang, Qinjun (16205534800); Chen, Fang (57441279900); Lu, Chunyan (56257699400); Lei, Shaohua (57198890186)
56200332700; 35216412200; 16205534800; 57441279900; 56257699400; 57198890186
Mapping post-earthquake landslide susceptibility: A U-net like approach
(2020) Remote Sensing, 12 (17), art. no. 1676, Cited 32 times.
DOI: 10.3390/RS12172767
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091331227&doi=10.3390%2FRS12172767&partnerID=40&md5=4bdeb8d31ee49f047f0657128cce2685

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; Aerospace Information Research Institute, Beijing, China; College of Computer and Information Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China; School of Geography, Nanjing Normal University, Nanjing, Jiangsu, China
ABSTRACT: A serious earthquake could trigger thousands of landslides and produce some slopes more sensitive to slide in future. Landslides could threaten human's lives and properties, and thus mapping the post-earthquake landslide susceptibility is very valuable for a rapid response to landslide disasters in terms of relief resource allocation and posterior earthquake reconstruction. Previous researchers have proposed many methods to map landslide susceptibility but seldom considered the spatial structure information of the factors that influence a slide. In this study, we first developed a U-net like model suitable for mapping post-earthquake landslide susceptibility. The post-earthquake high spatial airborne images were used for producing a landslide inventory. Pre-earthquake Landsat TM (Thematic Mapper) images and the influencing factors such as digital elevation model (DEM), slope, aspect, multi-scale topographic position index (mTPI), lithology, fault, road network, streams network, and macroseismic intensity (MI) were prepared as the input layers of the model. Application of the model to the heavy-hit area of the destructive 2008 Wenchuan earthquake resulted in a high validation accuracy (precision 0.77, recall 0.90, F1 score 0.83, and AUC 0.90). The performance of this U-net like model was also compared with those of traditional logistic regression (LR) and support vector machine (SVM) models on both the model area and independent testing area with the former being stronger than the two traditional models. The U-net like model introduced in this paper provides us the inspiration that balancing the environmental influence of a pixel itself and its surrounding pixels to perform a better landslide susceptibility mapping (LSM) task is useful and feasible when using remote sensing and GIS technology. ©
AUTHOR KEYWORDS: Convolutional neural network (CNN); Landslide susceptibility mapping (LSM); Logistic regression (LR); Post-earthquake; Support vector machine (SVM); U-net
INDEX KEYWORDS: Balancing; Earthquakes; Environmental technology; Lithology; Logistic regression; Mapping; Pixels; Remote sensing; Support vector machines; Support vector regression; Surveying; 2008 wenchuan earthquakes; Digital elevation model; Environmental influences; Landslide susceptibility; Landslide susceptibility mapping; Macroseismic intensity; Remote sensing and GIS; Spatial structure information; Landslides
REFERENCES: Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Shafique, Muhammad Ishraque Bin, A review of the 2005 Kashmir earthquake-induced landslides; from a remote sensing prospective, Journal of Asian Earth Sciences, 118, pp. 68-80, (2016); 
Bianchini, Silvia, From picture to movie: Twenty years of ground deformation recording over tuscany region (Italy) with satellite InSAR, Frontiers in Earth Science, 6, (2018); 
Shafique, Muhammad Ishraque Bin, Spatial and temporal evolution of co-seismic landslides after the 2005 Kashmir earthquake, Geomorphology, 362, (2020); 
Khazai, Bijan, Evaluation of factors controlling earthquake-induced landslides caused by Chi-Chi earthquake and comparison with the Northridge and Loma Prieta events, Engineering Geology, 71, 1-2, pp. 79-95, (2004); 
Tang, Chuan, Emergency assessment of seismic landslide susceptibility: A case study of the 2008 Wenchuan earthquake affected area, Earthquake Engineering and Engineering Vibration, 8, 2, pp. 207-217, (2009); 
Huang, Faming, Comparisons of heuristic, general statistical and machine learning models for landslide susceptibility prediction and mapping, Catena, 191, (2020); 
Yalçın, Ali, GIS-based landslide susceptibility mapping using analytical hierarchy process and bivariate statistics in Ardesen (Turkey): Comparisons of results and confirmations, Catena, 72, 1, pp. 1-12, (2008); 
Ghosh, Jayanta Kumar, A Knowledge-based landslide Susceptibility zonation system, Journal of Computing in Civil Engineering, 24, 4, pp. 325-334, (2010)
PUBLISHER: MDPI AG diversity@mdpi.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Lee, M.-F.R., Chien, T.-W.
AUTHOR FULL NAMES: Lee, Min Fan Ricky (35409746200); Chien, Tzuwei (57219409892)
35409746200; 57219409892
Artificial intelligence and internet of things for robotic disaster response
(2020) International Conference on Advanced Robotics and Intelligent Systems, ARIS, 2020-August, art. no. 9205794, Cited 28 times.
DOI: 10.1109/ARIS50834.2020.9205794
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092550808&doi=10.1109%2FARIS50834.2020.9205794&partnerID=40&md5=9c9db3194dd6594fb0be70ec90dfcdc7

AFFILIATIONS: National Taiwan University of Science and Technology, Taipei, Taiwan
ABSTRACT: After the Fukushima nuclear disaster and the Wenchuan earthquake, the relevant government agencies recognized the urgency of disaster-straining robots. There are many natural or man-made disasters in Taiwan, and it is usually impossible to dispatch relevant personnel to search or explore immediately. The project proposes to use the architecture of Intelligent Internet of Things (AIoT) (Artificial Intelligence + Internet of Things) to coordinate with ground, surface and aerial and underwater robots, and apply them to disaster response, ground, surface and aerial and underwater swarm robots to collect environmental big data from the disaster site, and then through the Internet of Things. From the field workstation to the cloud for 'training' deep learning model and 'model verification', the trained deep learning model is transmitted to the field workstation via the Internet of Things, and then transmitted to the ground, surface and aerial and underwater swarm robots for on-site continuing objects classification. Continuously verify the 'identification' with the environment and make the best decisions for the response. The related tasks include monitoring, search and rescue of the target. © 2020 IEEE.
AUTHOR KEYWORDS: AIoT; Artificial Intelligence; Disaster Response; Internet of Things; Mobile Robot; Swarm Intelligence
INDEX KEYWORDS: Agricultural robots; Antennas; Data communication equipment; Deep learning; Earthquakes; Educational robots; Emergency services; Intelligent robots; Intelligent systems; Internet of things; Robotics; Disaster response; Fukushima nuclear disasters; Government agencies; Man-made disasters; Model verification; Search and rescue; Underwater robots; Wenchuan Earthquake; Swarm intelligence
REFERENCES: Yukitake, Takeshi, Innovative solutions toward future society with AI, Robotics, and IoT, IEEE Symposium on VLSI Circuits, Digest of Technical Papers, pp. C16-C19, (2017); 
Wan, Jiafu, Artificial intelligence for cloud-assisted smart factory, IEEE Access, 6, pp. 55419-55430, (2018); 
Maier, Martin, The Tactile Internet: Where Do We Go from Here?, Asia Communications and Photonics Conference, ACP, 2018-October, (2018); 
Kulla, Elis, Neuro-Adaptive Learning Fuzzy-Based System for Actor Selection inWireless Sensor and Actor Networks, pp. 488-493, (2016); 
Francisco, Rui, Intelligent multi-platform middleware for wireless sensor and actuator networks, Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, 150, pp. 16-22, (2015); 
Hu, Long, iRobot-Factory: An intelligent robot factory based on cognitive manufacturing and edge computing, Future Generation Computer Systems, 90, pp. 569-577, (2019); 
Lee, Min Fan Ricky, Intelligent robot for worker safety surveillance: Deep learning perception and visual navigation, International Conference on Advanced Robotics and Intelligent Systems, ARIS, 2020-August, (2020); 
Lee, Min Fan Ricky, Intelligent navigation and micro-spectrometer content inspection system for a homecare mobile robot, International Journal of Fuzzy Systems, 16, 3, pp. 389-399, (2014); 
Patent; 
Lee, Min Fan Ricky, Real-time face tracking and recognition using the mobile robots, Advanced Robotics, 29, 3, pp. 187-208, (2015)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2020 International Conference on Advanced Robotics and Intelligent Systems, ARIS 2020
CONFERENCE DATE: 2020-08-19 through 2020-08-21
CONFERENCE LOCATION: Taipei
CONFERENCE CODE: 163516
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Duan, L., Xiang, M., Yang, J., Wei, X., Wang, C.
AUTHOR FULL NAMES: Duan, Linsen (57218939395); Xiang, Mingshun (50662335500); Yang, Jin (24741227200); Wei, Xiaohan (57218937595); Wang, Chunjian (57218935132)
57218939395; 50662335500; 24741227200; 57218937595; 57218935132
Eco-environmental assessment of earthquake-stricken area based on pressure-state-response (P-S-R) model
(2020) International Journal of Design and Nature and Ecodynamics, 15 (4), pp. 545 - 553, Cited 11 times.
DOI: 10.18280/ijdne.150412
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090840710&doi=10.18280%2Fijdne.150412&partnerID=40&md5=f9ec8c6445097b0cdc4131033b9579c4

AFFILIATIONS: College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China; Research Center for Human Geography of Tibetan Plateau and Its Eastern Slope, Chengdu University of Technology, Chengdu, China
ABSTRACT: The 2008 Wenchuan Earthquake caused serious eco-environmental problems. To promote the restoration of ecological functions, it is important to carry out follow-up monitoring and scientific assessment of the eco-environment in the earthquake-stricken area. Based on the remote sensing (RS) images captured by Landsat satellites, this paper extracts and inverts the eco-environmental factors using RS and geographical information system (GIS) techniques. Then, an assessment index system was set up for the eco-environment in the earthquake-stricken area based on the pressure-state-response (P-SR) model. After that, the Analytic Network Process (ANP) was adopted to thoroughly assess the eco-environment in the study area. The results show that the eco-environment state of the study area worsened quickly before a gradual improvement, exhibiting a benign development trend; the most significant eco-environment changes took place in the following areas: the worst-hit towns, both sides of the Beichuan Great Fault Zone, river banks, and regions with frequent human activities; the eco-environment restoration is mainly affected by the long-term impact of the earthquake and its secondary geological disasters, restoration measures, geological conditions, and intensity of human activities. The research results provide insights into the progress of ecological restoration and the dynamic changes of ecological functions in the earthquake-stricken areas, laying a scientific basis for preparing ecological restoration measures for different stages. © 2020 WITPress. All rights reserved.
AUTHOR KEYWORDS: Analytic network process (ANP); Earthquake; Eco-environment state; Geological disaster; Remote sensing (RS)
INDEX KEYWORDS: Bank protection; Ecology; Geology; Remote sensing; Restoration; 2008 wenchuan earthquakes; Analytic network process; Assessment index system; Ecological restoration; Geological conditions; Pressure state response (PSR); Remote sensing images; Restoration measures; Earthquakes
REFERENCES: Opdam, Paul F.M., Bridging the gap between ecology and spatial planning in landscape ecology, Landscape Ecology, 16, 8, pp. 767-779, (2001); 
Loucks, Colby J., The giant pandas of the Qinling Mountains, China: A case study in designing conservation landscapes for elevational migrants, Conservation Biology, 17, 2, pp. 558-565, (2003); 
Zhang, Jindong, Natural recovery and restoration in giant panda habitat after the Wenchuan earthquake, Forest Ecology and Management, 319, pp. 1-9, (2014); 
Peng, Jian, How to assess urban development potential in mountain areas? An approach of ecological carrying capacity in the view of coupled human and natural systems, Ecological Indicators, 60, pp. 1017-1030, (2016); 
Zhang, Zhejun, Old-growth forest is what giant pandas really need, Biology Letters, 7, 3, pp. 403-406, (2011); 
Chen, Ming, The long-term evolution of landslide activity near the epicentral area of the 2008 Wenchuan earthquake in China, Geomorphology, 367, (2020); 
Bulletin of Chinese Academy of Sciences, (2008); 
Zhang, Shuai, Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area, Geomorphology, 276, pp. 86-103, (2017); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Fan, Ruilin, Evolution of debris flow activities in Gaojiagou Ravine during 2008–2016 after the Wenchuan earthquake, Engineering Geology, 235, pp. 1-10, (2018)
PUBLISHER: International Information and Engineering Technology Association info@iieta.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Lyu, H.-M., Shen, S.-L., Yang, J., Zhou, A.-N.
AUTHOR FULL NAMES: Lyu, Haimin (57191290422); Shen, S. L. (57262533600); Yang, Jun (35605258800); Zhou, Annan (57205728497)
57191290422; 57262533600; 35605258800; 57205728497
Risk Assessment of Earthquake-Triggered Geohazards Surrounding Wenchuan, China
(2020) Natural Hazards Review, 21 (3), art. no. 05020007, Cited 50 times.
DOI: 10.1061/(ASCE)NH.1527-6996.0000375
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086702934&doi=10.1061%2F%28ASCE%29NH.1527-6996.0000375&partnerID=40&md5=8448a01da7c3b3c2f4b81fefb1efa108

AFFILIATIONS: Department of Civil & Environmental Engineering, Shantou University, Shantou, Guangdong, China; Dean of College of Engineering, Shantou University, Shantou, Guangdong, China; Department of Civil Engineering, The University of Hong Kong, Hong Kong, Hong Kong; Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China; Civil and Infrastructure Engineering, RMIT University, Melbourne, VIC, Australia
ABSTRACT: The great 2008 Wenchuan earthquake in China was a painful disaster. Accordingly, the management and mitigation of the risk of future earthquake-triggered geohazards remain a critical responsibility of local authorities. This case study assesses the risk of earthquake-triggered geohazards surrounding Wenchuan County using the analytical hierarchical process (AHP) and the trapezoidal fuzzy AHP (FAHP). The assessment results show that the regions with high-risk and very high-risk levels are distributed in the belt along the Longmenshan fault zone. Moreover, the percentages of high and very high-risk levels obtained from the trapezoidal FAHP are higher than those obtained from the original AHP. This comparison reveals that the trapezoidal FAHP provides a more reasonable assessment than the AHP. Further, the trapezoidal FAHP can capture the regions with high-risk and very high-risk levels. The results from the trapezoidal FAHP provide four choices that stakeholders can use to make decisions, which mitigates the biases that exist in the original AHP. © 2020 American Society of Civil Engineers.
AUTHOR KEYWORDS: Geographic information system (GIS); Risk assessment; Trapezoidal fuzzy analytical hierarchical process (FAHP); Wenchuan earthquake
INDEX KEYWORDS: Earthquakes; Geographic information systems; Hazards; Hierarchical systems; 2008 wenchuan earthquakes; Analytical hierarchical process; Case-studies; Geographic information system; Geohazards; High risk level; Local authorities; Risks assessments; Trapezoidal fuzzy analytical hierarchical process; Wenchuan Earthquake; Risk assessment; analytical hierarchy process; disaster management; earthquake trigger; fuzzy mathematics; geological hazard; risk assessment; Sichuan earthquake 2008; stakeholder; China; Longmenshan Fault Zone; Sichuan; Wenchuan
REFERENCES: Cheng, Ching Hsue, Evaluating weapon system by Analytical Hierarchy Process based on fuzzy scales, Fuzzy Sets and Systems, 63, 1, pp. 1-10, (1994); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Gallina, Valentina, A review of multi-risk methodologies for natural hazards: Consequences and challenges for a climate change impact assessment, Journal of Environmental Management, 168, pp. 123-132, (2016); 
Topographic Data, (2018); 
Godschalk, David R., Urban hazard mitigation: Creating resilient cities, Natural Hazards Review, 4, 3, pp. 136-143, (2003); 
Journal of Engineering Geology, (2011); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014); 
Jalayer, Fatemeh, Probabilistic GIS-based method for delineation of urban flooding risk hotspots, Natural Hazards, 73, 2, pp. 975-1001, (2014); 
Kamal, Hasan Kh, Land subsidence in arid terrain: Methodology toward risk analysis, Natural Hazards Review, 14, 4, pp. 268-280, (2013); 
van Laarhoven, Peter J.M., A fuzzy extension of Saaty's priority theory, Fuzzy Sets and Systems, 11, 1-3, pp. 229-241, (1983)
PUBLISHER: American Society of Civil Engineers (ASCE)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Guo, X., Guo, Q., Feng, Z.
AUTHOR FULL NAMES: Guo, Xinyi (57218195758); Guo, Qing (56390923700); Feng, Zhongkui (57197336683)
57218195758; 56390923700; 57197336683
Relationship between landslide creep and vegetation anomalies in remote sensing images 滑坡蠕变与遥感影像上植被异常关系
(2020) National Remote Sensing Bulletin, 24 (6), pp. 776 - 786, Cited 8 times.
DOI: 10.11834/jrs.20208330
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088216223&doi=10.11834%2Fjrs.20208330&partnerID=40&md5=33e965342d7d72d3ef2f094b6738fd64

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Landslides bring great peril to mountainous areas in China. In recent years, catastrophic high-position landslides often occur after the Wenchuan earthquake. The landslides occurred in the mountains that have high or steep terrain and dense vegetation coverage. A typical case in Xinmocun occurred in Diexi Town, Maoxian County, Sichuan Province on June 24, 2017. Given the characteristics of high position and concealment, this type of landslide is difficult to be detected by GPS, InSAR, and other traditional investigation methods. Certain technologies should be promoted and applied to detect and prevent such high concealed landslides at high positions. The optical remote sensing technology, owning a special capability with large-range, non-contact, periodic coverage, and abundant data, has great potential in making up for the limitations of the above methods, which is of great significance to disaster prevention and mitigation. The creep of landslide causes changes in environmental conditions, such as loosening of rock mass, change in soil nutrient, and uneven distribution of water. Changes in environmental conditions cause vegetation growth to vary. In situ investigation is conducted on the anomaly of vegetation growth before landslide. Therefore, on the basis of vegetation anomaly, this study establishes a new indirect landslide monitoring method to prepare for the study of landslide prediction. This method identifies vegetation anomaly on the landslide body using high-resolution optical remote sensing images, establishes the relationship between the creep of landslides and vegetation anomaly, and analyzes the evolution process of landslide creep at the stage of potential landslides. The Xinmocun landslide, which has high vegetation coverage, is selected as an example for conducting experiments. First, according to the comprehensive interpretation of optical remote sensing images and geological data, the Xinmocun landslide area is divided into upper landslide hazard, middle potential impact, and lower human activity. Second, vegetation coverage in each area is calculated using three-time series optical remote sensing images (June 18, 2014; June 21, 2015; and June 28, 2016) before landslides. Finally, the relationship between vegetation growth status and landslide creep is analyzed and verified using the remote sensing images and geological survey after the landslide. Experiments on high-resolution optical remote sensing images, which were conducted at the same period of three years before the landslide, detected changes in vegetation. In the upper landslide hazard area, the main landslide source and the narrow slump areas above the deformable body were affected by the creep of landslide. Hence, vegetation coverage declined evidently from 2014 to 2016. With the increase of distance from the edge of the bare land, the smaller the effect of landslide creep is, and the better the status of vegetation gradually becomes. With the time of landslide approaching, the greater the effect of landslide creep is, and the worse the status of vegetation in the same position becomes. In the middle potential impact area, the vegetation coverage around the springs and gullies declines with the greater effect of landslide creep as the time of landslide approaches. In the lower human activity area, the variation of vegetation coverage has no obvious regularity because of complex factors. Through experiments of optical remote sensing data, the conclusions are drawn as follows. The status of vegetation in the upper landslide hazard area and the middle potential impact area has significant temporal and spatial correlation with landslide creep. This result reflects the inherent relationship between vegetation growth and the creep of landslides, which can be used to predict the occurrence of landslides. © 2020, Science Press. All right reserved.
AUTHOR KEYWORDS: GPS; InSAR; Landslide monitoring; Regional division; Remote sensing; Vegetation anomaly; Vegetation coverage; Xinmocun landslide
INDEX KEYWORDS: Creep; Disaster prevention; Earthquakes; Geology; Hazards; Image analysis; Optical resolving power; Remote sensing; Vegetation; Disaster prevention and mitigations; Environmental conditions; In-situ investigations; Investigation methods; Optical remote sensing; Optical remote sensing data; Potential impact areas; Temporal and spatial correlation; Landslides
REFERENCES: Ding, Yulong, Distortion-resistant ability of Tetraena mongolica root at the mining subsidence area, Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 42, 6, pp. 970-981, (2013); 
Du, Tao, Effects of surface cracks caused by coal mining on microorganisms and enzyme activities in rhizosphere of Salix psammophila, Meitan Xuebao/Journal of the China Coal Society, 38, 12, pp. 2221-2226, (2013); 
Science of Surveying and Mapping, (2006); 
undefined, (2015); 
Mountain Research, (2017); 
Kaufman, Yoram J., Atmospherically Resistant Vegetation Index (ARVI) for EOS-MODIS, IEEE Transactions on Geoscience and Remote Sensing, 30, 2, pp. 261-270, (1992); 
Journal of Lanzhou University Nat Science, (2014); 
Method of Vegetation Fraction Estimation by Remote Sensing, (2003); 
Journal of Engineering Geology, (2010); 
Lu, Tao, Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: A case study in Mao County, Ecological Research, 27, 5, pp. 955-966, (2012)
PUBLISHER: Science Press rfchen@issas.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

He, M., Wu, L., Cui, J., Wang, W., Qi, Y., Mao, W., Miao, Z., Chen, B., Shen, X.
AUTHOR FULL NAMES: He, Miao (57217472217); Wu, Lixin (55714061400); Cui, Jing (56489209000); Wang, Wei (56937426900); Qi, Yuan (57207795977); Mao, Wenfei (57200606801); Miao, Zelang (55388064200); Chen, Biyan (56092031700); Shen, Xuhui (7402721678)
57217472217; 55714061400; 56489209000; 56937426900; 57207795977; 57200606801; 55388064200; 56092031700; 7402721678
Remote sensing anomalies of multiple geospheres before the Wenchuan earthquake and its spatiotemporal correlations 汶川地震前多圈层短-临遥感异常回顾及其时空关联性
(2020) National Remote Sensing Bulletin, 24 (6), pp. 681 - 700, Cited 10 times.
DOI: 10.11834/jrs.20200059
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088214846&doi=10.11834%2Fjrs.20200059&partnerID=40&md5=aa531862dade805b96cfeeb5624b1a41

AFFILIATIONS: Central South University, Changsha, Hunan, China; Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; College of Resources and Civil Engineering, Shenyang, Liaoning, China
ABSTRACT: The preparation for the occurrence of an earthquake is a complicated process. This process is usually accompanied with material migration, energy release, and information exchange, which can disturb the radiation balance in the seismogenic zone. Obtaining the changing information of the coversphere, atmosphere, and ionosphere through satellite remote sensing; analyzing seismic anomalies; and identifying earthquake precursors, have become the interactive hotspots of the remote sensing and seismology fields. As a typical case where numerous anomalies precede the main shock, this study investigated the Ms 8.0 Wenchuan earthquake and its physical mechanism of the relevant seismic anomalies. On the basis of published research results, this study systematically collected and filtered the possible remote sensing anomalies of the Wenchuan earthquake under certain criteria and summarized the abnormal features of 20 remote sensing parameters related to the coversphere (five parameters), atmosphere (eight parameters), and ionosphere (seven parameters). By mapping the anomalies in a unified framework, the spatiotemporal correlations among the anomaly manifestations were analyzed, and the overall spatiotemporal characteristics of the short-term manifestations of multiple anomalies were revealed. The results of this study can be summarized as follows. (1) The manifestations of remote sensing anomalies gradually increased, enhanced, and congested before the Wenchuan earthquake, and prominent impending earthquake precursors were observed. (2) Remote sensing anomalies developed in a bottom-up manner from the coversphere and atmosphere to the ionosphere three months before the shock, which is in accordance with the Lithosphere-Coversphere-Atmosphere-Ionosphere (LCAI) coupling paradigm. (3) Strong spatial correlations were present among the seismic faults and manifestation positions of short-term-to-impending remote sensing anomalies, which congested along the Longmenshan faults and its nearby region. (4) Multiple short-term-to-impending remote sensing and strip-shaped anomalies covered the epicenter of the main shock and developed along the Longmenshan faults, respectively, thereby reflecting the local effect of the LCAI coupling in the late stage of the seismogenous process. The clustering multi-parameter remote sensing anomalies before May 12 can be regarded as Wenchuan earthquake anomalies with precursory significance. At the macroscopic scale, the seismic response driven by the deep part of the Earth can be explained using the knowledge on the multiple geosphere coupling of the entire planet system. The in-depth analysis of the individual characteristics, spatiotemporal correlations, and overall laws of the Wenchuan earthquake remote sensing anomalies during the earthquake preparation process is critical to the investigation of the physical mechanism of seismic anomalies. This retrospective research provides heuristic clues about the energy exchange process of the Wenchuan earthquake and confirms the great potential of multi-parameter earthquake precursor research. Furthermore, this study benefits the satellite monitoring and synergic analysis of strong inland earthquakes during the late stage of earthquake preparation and provides reference for earthquake prediction studies. © 2020, Science Press. All right reserved.
AUTHOR KEYWORDS: Anomaly manifestation; Multiple geospheres; Remote sensing anomaly; Spatio-temporal correlation; Wenchuan earthquake
INDEX KEYWORDS: Faulting; Ionosphere; Ionospheric measurement; Remote sensing; Earthquake precursors; Earthquake prediction; Individual characteristics; Information exchanges; Satellite remote sensing; Spatial correlations; Spatiotemporal characteristics; Spatiotemporal correlation; Earthquakes
REFERENCES: Akhoondzadeh, Mehdi, Feasibility of anomaly occurrence in aerosols time series obtained from MODIS satellite images during hazardous earthquakes, Advances in Space Research, 58, 6, pp. 890-896, (2016); 
Akhoondzadeh, Mehdi, Electron and ion density variations before strong earthquakes (M>6.0) using DEMETER and GPS data, Natural Hazards and Earth System Sciences, 10, 1, pp. 7-18, (2010); 
An, Zhanghui, A study of the electric field before the Wenchuan 8. 0 earthquake of 2008 using both space-based and ground-based observational data, Acta Geophysica Sinica, 54, 11, pp. 2876-2884, (2011); 
South China Journal of Seismology, (2011); 
Chen, Meihua, Study on the association between the surface latent heat flux(SLHF)in Tengchong region with the earthquakes in Sichuan-Yunnan region, Dizhen Dizhi, 36, 2, pp. 422-433, (2014); 
Chen, Meihua, Long-and mid-term anomalous variations of atmospheric water vapor before strong earthquake, Dizhen Dizhi, 33, 3, pp. 549-559, (2011); 
Zhou, Jiangcun, Exploring co-seismic thermal response of Wenchuan earthquake by using land surface Temperatures of Terra and Aqua Satellites, Acta Geophysica Sinica, 56, 11, pp. 3788-3789, (2013); 
Chen, Shunyun, Exploring the current tectonic activity with satellite remote sensing thermal information: A case of the Wenchuan earthquake, Dizhen Dizhi, 36, 3, pp. 775-793, (2014); 
Study on Earthquake Related Anomalous Features of Infrared Remote Sensing, (2011); 
Science and Technology Review, (2008)
PUBLISHER: Science Press rfchen@issas.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shu, Y., Fang, R., Liu, Y., Ding, D., Qiao, L., Li, G., Liu, J.
AUTHOR FULL NAMES: Shu, Yuanming (57193402108); Fang, Rongxin (57193923274); Liu, Yang (59449150800); Ding, Dong (56640549900); Qiao, Lulu (37114823900); Li, Guangxue (7407055212); Liu, Jingnan (9245111700)
57193402108; 57193923274; 59449150800; 56640549900; 37114823900; 7407055212; 9245111700
Precise coseismic displacements from the GPS variometric approach using different precise products: Application to the 2008 MW 7.9 Wenchuan earthquake
(2020) Advances in Space Research, 65 (10), pp. 2360 - 2371, Cited 6 times.
DOI: 10.1016/j.asr.2020.02.013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081212963&doi=10.1016%2Fj.asr.2020.02.013&partnerID=40&md5=cf7705ddf19a5fbfbef0f9525305d9f2

AFFILIATIONS: Ocean University of China, Qingdao, Shandong, China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education of the People's Republic of China, Beijing, Beijing, China; GNSS Research Center, Wuhan University, Wuhan, Hubei, China; First Institute of Oceanography, Ministry of Natural Resources, Qingdao, Shandong, China
ABSTRACT: The Global Positioning System (GPS) variometric approach has emerged as an attractive alternative to traditional well-developed positioning techniques including relative positioning and precise point positioning. Previous studies have demonstrated the capability of the variometric approach to retrieve coseismic displacements at centimeter-level precision, in a real-time manner using only readily available broadcast ephemeris. This study presents the first results comparing the performance of the variometric approach by using a variety of precise satellite orbit and clock products. Totally six kinds of products are included in our evaluation, namely the broadcast, IGS (International GNSS Service) ultra-rapid (predicted), ultra-rapid (observed), rapid, final (30-s clock) and CODE (Center for Orbit Determination in Europe) final (5-s clock) products. Static and dynamic experiments are conducted using 1-Hz GPS data covering a relatively large area in China during the 2008 Wenchuan M<inf>W</inf> 7.9 earthquake. After removing the linear trend, the displacements using broadcast, ultra-rapid (predicted), ultra-rapid (observed) and rapid products reach nearly equivalent precisions at centimeter level. By using final and CODE final products, the precision of displacements can be significantly improved from 1.9–2.0 cm to 0.4–0.7 cm horizontally, and from 6.0–6.2 cm to 1.0–1.7 cm vertically for the dynamic experiments. The displacements using the CODE final products achieve the best precision, improved by more than 40% compared to those using the IGS final products. With the availability of IGS high-rate real-time precise products, this approach is promising to capture coseismic displacements more precisely in real time, which is crucial for earthquake and tsunami early warning. © 2020 COSPAR
AUTHOR KEYWORDS: Clock sampling interval; Coseismic displacements; GPS variometric approach; IGS precise products
INDEX KEYWORDS: Clocks; Codes (symbols); Earthquakes; Orbits; Broadcast ephemerides; Clock-sampling; Co-seismic displacement; Earthquake and tsunamis; IGS precise products; Positioning techniques; Precise point positioning; Precise satellite orbit; Global positioning system
REFERENCES: Benedetti, Elisa, Global navigation satellite systems seismology for the 2012 Mw 6.1 emilia earthquake: Exploiting the vadase algorithm, Seismological Research Letters, 85, 3, pp. 649-656, (2014); 
Bilich, Andria L., GPS seismology: Application to the 2002 Mw 7.9 Denali fault earthquake, Bulletin of the Seismological Society of America, 98, 2, pp. 593-606, (2008); 
Bock, Heike, High-rate GPS clock corrections from CODE: Support of 1 Hz applications, Journal of Geodesy, 83, 11, pp. 1083-1094, (2009); 
Branzanti, Mara, GPS near-real-time coseismic displacements for the great tohoku-oki earthquake, IEEE Geoscience and Remote Sensing Letters, 10, 2, pp. 372-376, (2013); 
Colosimo, Gabriele, Real-time GPS seismology with a stand-alone receiver: A preliminary feasibility demonstration, Journal of Geophysical Research: Solid Earth, 116, 11, (2011); 
Dach, Rolf, GNSS processing at CODE: Status report, Journal of Geodesy, 83, 3-4, pp. 353-365, (2009); 
Dow, John M., The International GNSS Service in a changing landscape of Global Navigation Satellite Systems, Journal of Geodesy, 83, 3-4, pp. 191-198, (2009); 
Elsobeiey, Mohamed, Performance of real-time Precise Point Positioning using IGS real-time service, GPS Solutions, 20, 3, pp. 565-571, (2016); 
Fang, Rongxin, Determination of earthquake magnitude using GPS displacement waveforms from real-time precise point positioning, Geophysical Journal International, 196, 1, pp. 461-472, (2013); 
Ge, Yue, Evaluating china’s national post-disaster plans: The 2008 Wenchuan Earthquake’s recovery and reconstruction planning, International Journal of Disaster Risk Science, 1, 2, pp. 17-27, (2010)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, M., Tang, C., Chen, M., Shi, Q.
AUTHOR FULL NAMES: Li, Mingwei (57222871091); Tang, Chuan (35932953300); Chen, Ming (57199453005); Shi, Qingyun (57217257328)
57222871091; 35932953300; 57199453005; 57217257328
Spatio-temporal evolution characteristics of landslides in debris flow catchment in Beichuan County in the Wenchuan earthquake zone 汶川震区北川县泥石流流域崩滑体时空演变特征
(2020) Hydrogeology and Engineering Geology, 47 (3), pp. 182 - 190, Cited 18 times.
DOI: 10.16030/j.cnki.issn.1000-3665.201909006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127603242&doi=10.16030%2Fj.cnki.issn.1000-3665.201909006&partnerID=40&md5=205bd5847f096fde7e2a6dec2b666f0f

AFFILIATIONS: Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan Earthquake on May 12, 2008 triggered a large-scale co-seismic landslide, and the subsequent heavy rainfall prompted the formation of a new landslide. These loose solid materials became the main material source for subsequent debris flow disasters, which seriously threaten people, s lives and property security. In order to explore the spatio-temporal evolution characteristics of the landslide in the debris flow catchment in the strong earthquake area, this paper takes the eight catchments dominated by the Weijiagou in Beichuan County as an example, and selects eight remote sensing images (after the earthquake in 2008, after the "9. 24" debris flow, and in 2010, 2011, 2013, 2014, 2015 and 2016), to respectively interpret the landslides, and calculate their spatial distribution characteristics. We also calculated the vegetation coverage (VFC) and vegetation coverage recovery rate (VCRR) in the study area using the normalized vegetation index (NDVI). The research results show that the development area of the landslide in the study area reaches a peak after the heavy rainfall, and then it returns to a stable state, and the area decreases year by year. The collapse body has the largest development area in the range of 900 - 1 100 m in elevation, 30° - 45° in slope, 90° - 135° in the slope direction and 150 m in the channel. The vegetation coverage in the catchment was the lowest after the "9. 24"debris flow disaster, and then recovered stably. In the period from the earthquake to 2010, the vegetation coverage recovery rate is more than moderate, and the vegetation restoration degree was low. After 2011, most areas in the catchments were at a medium or higher level of vegetation coverage recovery rate, and the degree of vegetation restoration was higher. By 2016, the vegetation coverage of the study area has returned to a high level of 0.86. This study also shows that vegetation has a certain inhibitory effect on debris flow activity. © The Author(s) 2020.
AUTHOR KEYWORDS: debris flow; landslides; remote sensing; spatio-temporal evolution; vegetation recovery; Wenchuan earthquake area
REFERENCES: Hydrogeology and Engineering Geology, (2016); 
Wen, Mingsheng, Regional warning of geological hazards in high seismic intensity area of Wenchuan Earthquake, Chinese Journal of Geological Hazard and Control, 30, 1, pp. 10-19, (2019); 
Hydrogeology and Engineering Geology, (2017); 
Cheng, Jack D., Hydrometeorological and landuse attributes of debris flows and debris floods during typhoon Toraji, July 29-30, 2001 in central Taiwan, Journal of Hydrology, 306, 1-4, pp. 161-173, (2005); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Engineering Geology, (2010); 
Journal of Engineering Geology, (2010); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011); 
Hydrogeology Engineering Geology, (2011)
PUBLISHER: Editorial Office of Hydrogeology and Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fang, Q., Chen, Z., Tang, C., Xu, H.
AUTHOR FULL NAMES: Fang, Qunsheng (57022933100); Chen, Zhihe (55750392700); Tang, Chuan (35932953300); Xu, Huiliang (57217257556)
57022933100; 55750392700; 35932953300; 57217257556
Numerically simulating the runout volume of debris flow at urgent steep gully in the earthquake areas based on FLO-2D -Illustrated with a case of Wayao gully 基于FLO-2D数值模拟震区急陡型泥石流冲出量-以瓦窑沟为例
(2020) Zhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis Sunyatseni, 59 (3), pp. 23 - 31, Cited 2 times.
DOI: 10.13471/j.cnki.acta.snus.2020.03.003
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086909262&doi=10.13471%2Fj.cnki.acta.snus.2020.03.003&partnerID=40&md5=ed4cbf04a1e2172455c9f78c55cbf9a8

AFFILIATIONS: Sun Yat-Sen University, Guangzhou, Guangdong, China; Sun Yat-Sen University, Guangzhou, Guangdong, China; Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong Higher Education Institutes, Guangzhou, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Southwest Geotechnical Investigation and Architecture Design Institute Corporation, Chengdu, China
ABSTRACT: The mountain was seriously broken in the earthquake area after the Wenchuan earthquake. The critical threshold for inducing geological disasters such as debris flow and landslide was low. A type of urgent-steep gully debris flow was triggered, which led to extreme destruction. This type of debris flow has a shorter outbreak duration, a large volume concentration and a large average density, showing a strong "snowball effect" and strong "fire hose effect". The engineering measures have an important influence on FLO-2D numerical simulation of urgent-steep gully debris flows. Therefore, FLO-2D is used to simulate the runout volumes of typical urgent-steep gully debris flows under engineering measures and nonengineering measures scenarios respectively, taking Wayao gully in Wenchuan earthquake area as an example. The accuracy of numerical simulation results is 86.4%. The block dam in the circulation area can divide block debris flow into sections under the engineering measures, which makes the debris flow runout volume reduced. When the rainfall frequency is P =2%, under the engineering treatment measures scenario, the runout volume is 83.16%, the accumulation fan area is 75.81%, and the average accumulation depth is 30.25% less than those in the natural scenario. The research results can provide reference for disaster prevention and mitigation engineering and early warning of debris flow of urgent steep gullies in earthquake areas. © 2020, Editorial Department of Journal, Sun Yat-sen(Zhongshan) University. All right reserved.
AUTHOR KEYWORDS: Engineering measures; Numerical model; Runout volume; Urgent-steep gully; Wayao gully; Wenchuan earthquake area
REFERENCES: Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Journal of Mountain Science, (2008); 
Zhang, Shuai, Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area, Geomorphology, 276, pp. 86-103, (2017); 
Zou, Heping, Preliminary studies on causation of catastrophes in meizoseismal areas of the 5.12 Wenchuan huge earthquake, Zhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis Sunyatseni, 48, 2, pp. 131-135, (2009); 
Journal of Catastrophology, (2016); 
Zhou, Wei, A rapid method to identify the potential of debris flow development induced by rainfall in the catchments of the Wenchuan earthquake area, Landslides, 13, 5, pp. 1243-1259, (2016); 
Fang, Qunsheng, A calculation method for predicting the runout volume of dam-break and non-dam-break debris flows in the Wenchuan earthquake area, Geomorphology, 327, pp. 201-214, (2019); 
Journal of Engineering Geology, (2010); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011); 
Journal of Yunnan University, (2018)
PUBLISHER: Journal of Zhongshan University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, Y., Owen, L.A., Xu, C., Ma, S.-Y., Li, K., Xiwei, X., Figueiredo, P.M., Kang, W., Guo, P., Wang, S., Liang, X., Maharjan, S.B.
AUTHOR FULL NAMES: Tian, Yingying (56384732700); Owen, Lewis A. (57203106423); Xu, Chong (35184309900); Ma, Siyuan (57190214231); Li, Kang (57189233443); Xiwei, Xu (8246843900); Figueiredo, Paula M. (35916941000); Kang, Wenjun (56816262600); Guo, Peng (57202913856); Wang, Siyu (57205340144); Liang, Xiaohua (24073256000); Maharjan, Sudan Bikash (58718915300)
56384732700; 57203106423; 35184309900; 57190214231; 57189233443; 8246843900; 35916941000; 56816262600; 57202913856; 57205340144; 24073256000; 58718915300
Landslide development within 3 years after the 2015 Mw 7.8 Gorkha earthquake, Nepal
(2020) Landslides, 17 (5), pp. 1251 - 1267, Cited 52 times.
DOI: 10.1007/s10346-020-01366-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079224654&doi=10.1007%2Fs10346-020-01366-x&partnerID=40&md5=3934c0dcd6df796e065433bb7b1521b7

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Department of Marine, Earth and Atmospheric Sciences, NC State University, Raleigh, NC, United States; Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada; International Centre for Integrated Mountain Development Nepal, Kathmandu, Nepal
ABSTRACT: The Araniko and Pasang Lhamu highways are two critical trading routes connecting Nepal and China that are experiencing and are threatened by landsliding. The April 25 M<inf>w</inf> 7.8 Gorkha earthquake and its May 12 M<inf>w</inf> 7.3 aftershock in 2015 significantly increased landsliding along these highways. Multi-temporal remote sensing images (pre-seismic to December 2017) on Google Earth, aerial photography acquired in 2018 using an unmanned aerial vehicle (UAV), and field investigations and surveys in June 2015, November–December 2017, and April–May 2018 quantify the development of selected landslides after the earthquake along the two highways. These include detailed studies of 39 and 30 landslide locations in 2017 and 2018, respectively, with 14 locations common to both the 2017 and 2018 studies. Only the landslides in five locations showed a slight decrease in activity after the earthquake, and most landslides continued to move and enlarge. More than five new landslides were triggered by monsoon rainfalls in the summers of 2017 and 2018. All the landslides pose significant challenges for infrastructure reconstruction and hazard reduction in the area affected by the Gorkha earthquake, especially along the Araniko and Pasang Lhamu highways. Comparison of landslide debris volume, pre- and post- earthquake rainfalls, and earthquakes that occurred before and after the 2015 Gorkha earthquake with the 1999 Chi-Chi, 2005 Kashmir, and 2008 Wenchuan earthquakes show that continuing rainfall after earthquakes and strong aftershock shaking are key factors affecting continued landsliding in these earthquake-effected areas. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: 2015 Gorkha earthquake; Ground-based investigation; Himalaya; Landsliding; Nepal; Remote sensing; UAV photography
INDEX KEYWORDS: Aerial photography; Antennas; Landslides; Location; Remote sensing; Unmanned aerial vehicles (UAV); 2008 wenchuan earthquakes; Field investigation; Ground based; Himalayas; Infrastructure reconstruction; Landsliding; Multi-temporal remote sensing; Nepal; Earthquakes; aerial photography; aftershock; earthquake event; field survey; landslide; rainfall; satellite imagery; unmanned vehicle; China
REFERENCES: Acharya, Tri Dev, Landslide Susceptibility Mapping using Relative Frequency and Predictor Rate along Araniko Highway, KSCE Journal of Civil Engineering, 23, 2, pp. 763-776, (2019); 
Avouac, Jean Philippe, Lower edge of locked Main Himalayan Thrust unzipped by the 2015 Gorkha earthquake, Nature Geoscience, 8, 9, pp. 708-711, (2015); 
Basharat, Muhammad, Using PCA in evaluating event-controlling attributes of landsliding in the 2005 Kashmir earthquake region, NW Himalayas, Pakistan, Natural Hazards, 81, 3, pp. 1999-2017, (2016); 
Bhandary, Netra P., Areal distribution of large-scale landslides along highway corridors in central Nepal, Georisk, 7, 1, pp. 1-20, (2013); 
Assessment of Existing and Potential Landslide Hazards Resulting from the April 25 2015 Gorkha Nepal Earthquake Sequence, (2015); 
International Journal of Erosion Control Engineering, (2012); 
Dahal, Ranjan Kumar, Representative rainfall thresholds for landslides in the Nepal Himalaya, Geomorphology, 100, 3-4, pp. 429-443, (2008); 
Elliott, John R., Himalayan megathrust geometry and relation to topography revealed by the Gorkha earthquake, Nature Geoscience, 9, 2, pp. 174-180, (2016); 
Fan, Xuanmei, Failure mechanism and kinematics of the deadly June 24th 2017 Xinmo landslide, Maoxian, Sichuan, China, Landslides, 14, 6, pp. 2129-2146, (2017); 
Fan, Xuanmei, Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification, Landslides, 15, 5, pp. 967-983, (2018)
PUBLISHER: Springer
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, J., Böse, M., Wyss, M., Wald, D.J., Hutchison, A., Clinton, J.F., Wu, Z., Jiang, C., Zhou, S.
AUTHOR FULL NAMES: Li, Jiawei (58869925700); Böse, Maren (16642306800); Wyss, Max (55550012600); Wald, David Jay (7005483955); Hutchison, Alexandra A. (57190192915); Clinton, John Francis (14919275300); Wu, Zhongliang (9536539700); Jiang, Changsheng (35726743600); Zhou, Shiyong (8605299800)
58869925700; 16642306800; 55550012600; 7005483955; 57190192915; 14919275300; 9536539700; 35726743600; 8605299800
Estimating rupture dimensions of three major earthquakes in Sichuan, China, for early warning and rapid loss estimates
(2020) Bulletin of the Seismological Society of America, 110 (2), pp. 920 - 936, Cited 16 times.
DOI: 10.1785/0120190117
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083084141&doi=10.1785%2F0120190117&partnerID=40&md5=813487c9cdefac943452bc9b02f3d3f0

AFFILIATIONS: China Earthquake Administration, Beijing, China; School of Earth and Space Sciences, Peking University, Beijing, China; Swiss Seismological Service, ETH Zürich, Zurich, ZH, Switzerland; International Centre for Earth Simulation Foundation, Geneva, GE, Switzerland; United States Geological Survey Central Region, Denver, CO, United States; Université Gustave Eiffel, Marne-la-Vallee, Ile-de-France, France; Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China
ABSTRACT: Large earthquakes, such as Wenchuan in 2008, M<inf>w</inf> 7.9, Sichuan, China, provide an opportunity for earthquake early warning (EEW), as many heavily shaken areas are far (∼ 50 km) from the epicenter and warning times could be sufficient (≥ 5 s) to take preventive action. On the other hand, earthquakes with magnitudes larger than ∼ M 6.5 are challenging for EEW because source dimensions need to be defined to adequately estimate shaking. Finite-fault rupture detector (FinDer) is an approach to identify fault rupture extents from real-time seismic records. In this study, we playback local and regional onscale strong-motion waveforms of the 2008 M<inf>w</inf> 7.9 Wenchuan, 2013 M<inf>w</inf> 6.6 Lushan, and 2017 M<inf>w</inf> 6.5 Jiuzhaigou earthquakes to study the performance of FinDer for the current layout of the China Strong Motion Network. Overall, the FinDer line-source models agree well with the observed spatial distribution of aftershocks and models determined from waveform inver-sion. However, because FinDer models are constructed to characterize seismic ground motions (as needed for EEW) instead of source parameters, the rupture length can be over-estimated for events radiating high levels of high-frequency motions. If the strong-motion data used had been available in real time, 50%–80% of sites experiencing intensity modi-fied Mercalli intensity IV–VII (light to very strong) and 30% experiencing VIII–IX (severe to violent) could have been issued a warning with 10 and 5 s, respectively, before the arrival of the S wave. We also show that loss estimates based on the FinDer line source are more accurate compared to point-source models. For the Wenchuan earthquake, for example, they predict a four to six times larger number of fatalities and injured, which is consistent with official reports. These losses could be provided 1= 2 ∼ 3 hr faster than if they were based on more complex inversion rupture models. © Seismological Society of America.
INDEX KEYWORDS: Earthquake effects; Shear waves; Earthquake early warning; Large earthquakes; Line source models; Preventive action; Seismic ground motions; Source parameters; Strong motion datum; Wenchuan Earthquake; Faulting; early warning system; earthquake magnitude; earthquake rupture; estimation method; fault zone; ground motion; seismic source; seismicity; Sichuan earthquake 2008; strong motion; China; Sichuan
REFERENCES: Allen, Richard M., The ElarmS earthquake early warning methodology and application across California, pp. 21-43, (2007); 
Allen, Richard M., Earthquake early warning: Advances, scientific challenges, and societal needs, Annual Review of Earth and Planetary Sciences, 47, pp. 361-388, (2019); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Behr, Yannik, Anatomy of an earthquake early warning (EEW) alert: Predicting time delays for an end-to-end eew system, Seismological Research Letters, 86, 3, pp. 1-11, (2015); 
Böse, Maren, Probabilistic prediction of rupture length, slip and seismic ground motions for an ongoing rupture: Implications for early warning for large earthquakes, Geophysical Journal International, 183, 2, pp. 1014-1030, (2010); 
Böse, Maren, Finite-fault rupture detector (FinDer): Going real-time in californian shakealert warning system, Seismological Research Letters, 86, 6, pp. 1692-1704, (2015); 
Böse, Maren, Real-time Finite Fault Rupture Detector (FinDer) for large earthquakes, Geophysical Journal International, 191, 2, pp. 803-812, (2012); 
Böse, Maren, Earthquake early warning for Bucharest, Romania: Novel and revised scaling relations, Geophysical Research Letters, 34, 7, (2007); 
Böse, Maren, FinDer v.2: Improved real-time ground-motion predictions forM2-M9 with seismic finite-source characterization, Geophysical Journal International, 212, 1, pp. 725-742, (2018); 
Brune Jn, Tectonic stress and the spectra of seismic shear waves from earthquakes, Journal of Geophysical Research, 75, 26, pp. 4997-5009, (1970)
PUBLISHER: Seismological Society of America 201 Plaza Professional Building El Cerrito CA 94530
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, R., Hu, X., Xu, D., Liu, Y., Yu, N.
AUTHOR FULL NAMES: Li, Ruiheng (57203738164); Hu, Xiangyun (7404709263); Xu, Dong (59603588300); Liu, Yang (57859600700); Yu, Nian (24529281800)
57203738164; 7404709263; 59603588300; 57859600700; 24529281800
Characterizing the 3D hydrogeological structure of a debris landslide using the transient electromagnetic method
(2020) Journal of Applied Geophysics, 175, art. no. 103991, Cited 29 times.
DOI: 10.1016/j.jappgeo.2020.103991
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081136202&doi=10.1016%2Fj.jappgeo.2020.103991&partnerID=40&md5=d0bb5e5269325d67d87d3f985241a359

AFFILIATIONS: School of Electrical Engineering, Chongqing University, Chongqing, China; Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: Debris landslides are one of the most common types of landslides in the Wenchuan earthquake area. The characteristics of the hydrogeological structure are the basis for landslide stability evaluation and protection treatment. The preferred seepage paths developed in debris landslides control the flow of groundwater and have a direct impact on the soil instability and sliding surface instability. Therefore, it is particularly important to understand the groundwater seepage system. Recently, many joint geophysical surveys have been used to detect the hydrogeological structure of landslides. However, these joint surveys aim to detect structures on a large scale and do not focus on the seepage path systems in debris landslides. It is difficult to detect the 3D structure of the seepage path system in detail, taking into account the portability, penetration, and resolution while meeting the practical needs of landslide prevention. To date, no one method has been identified as the best detection method for characterizing complex 3D hydrogeological structures. To reveal the complex seepage paths efficiently, we investigated a debris landslide in Xishan village, Sichuan Province, China, by using the transient electromagnetic method (TEM), which is a fast and portable method. Additionally, we proposed an effective quasi-3D inversion strategy with kdTree to determine the geoelectric structure and to make a geological interpretation. The interpretation was verified with field engineering surveys, other geophysical surveys, and remote sensing data. The results suggest that the complex 3D structure in this debris landslide is characterized by a dendritic pipe network-like seepage drainage system. In addition, this work assessed the ability to detect different parts of the landslide based on the given resolution. Furthermore, the resolution and detection efficiency of the TEM were compared with those of other geophysical methods. The assessment and comparison demonstrated that the TEM can be used as the main survey method to fulfill the real-world demands of detecting seepage path systems in a debris landslide. © 2020 Elsevier B.V.
AUTHOR KEYWORDS: 3D hydrogeophysics model; Debris landslide; Preferential flow; Transient electromagnetic method
INDEX KEYWORDS: 3D modeling; Complex networks; Debris; Earthquakes; Geological surveys; Groundwater; Groundwater flow; Remote sensing; Seepage; Structural geology; Transient analysis; Debris landslide; Detection efficiency; Geoelectric structures; Geological interpretation; Hydrogeological structures; Hydrogeophysics; Preferential flows; Transient electromagnetic methods; Landslides; debris flow; electromagnetic method; geophysical method; landslide; seepage; Sichuan earthquake 2008; slope stability; three-dimensional modeling; transient flow; China; Sichuan; Wenchuan
REFERENCES: Adamczyk, Anna, Application of first-arrival tomography to characterize a quick clay landslide site in Southwest Sweden, Acta Geophysica, 61, 5, pp. 1057-1073, (2013); 
Adamczyk, Anna, High-resolution near-surface velocity model building using full-waveform inversion-a case study from southwest Sweden, Geophysical Journal International, 197, 3, pp. 1693-1704, (2014); 
J Water Resour Prot, (2015); 
Auken, Esben A., Large-scale TEM investigation for groundwater, Exploration Geophysics, 34, 3, pp. 188-194, (2003); 
10th European Meeting of Environmental and Engineering Geophysics, (2004); 
Auken, Esben A., A survey of current trends in near-surface electrical and electromagnetic methods, Geophysics, 71, 5, pp. G249-G260, (2006); 
Auken, Esben A., An integrated study of the hydrogeology of volcanic islands using helicopter borne transient electromagnetic: Application in the Galápagos Archipelago, Comptes Rendus - Geoscience, 341, 10-11, pp. 899-907, (2009); 
Balia, Roberto, Integrated interpretation of IP and TEM data for salinity monitoring of aquifers and soil in the coastal area of Muravera (Sardinia, Italy), Bollettino di Geofisica Teorica ed Applicata, 56, 1, pp. 31-42, (2015); 
Bastani, Mehrdad, 2D joint inversion of RMT and ERT data versus individual 3D inversion of full tensor RMT data: An example from Trecate site in Italy, Geophysics, 77, 4, pp. WB233-WB243, (2012); 
Studia Geotechnica Et Mechanica, (2015)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, Y., Du, P., Li, W., Zhang, W., Tian, Q., Xiong, R., Wang, L.
AUTHOR FULL NAMES: Xu, Yueren (35072242800); Du, Peng (57203623196); Li, Wenqiao Qiaou (52263948300); Zhang, Weiheng (57204648717); Tian, Qianjian (7102891908); Xiong, Renwei (55485092900); Wang, Lin (55196097000)
35072242800; 57203623196; 52263948300; 57204648717; 7102891908; 55485092900; 55196097000
A case study on AD 1718 Tongwei M7.5 earthquake triggered landslides -Application of landslide database triggered by historical strong earthquakes on the Loess Plateau 1718年通渭M7.5地震滑坡特征分析-黄土高原历史强震触发滑坡数据库的应用
(2020) Acta Geophysica Sinica, 63 (3), pp. 1235 - 1248, Cited 22 times.
DOI: 10.6038/cjg2020N0146
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082628982&doi=10.6038%2Fcjg2020N0146&partnerID=40&md5=1749af013aac51e5662d38dc76539ca2

AFFILIATIONS: Key Laboratory of Earthquake Prediction, China Earthquake Administration, Beijing, China; State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China
ABSTRACT: The application of new technologies and methods to study the seismogenic faults and seismic damage of historical strong earthquakes is important for revision of the earthquake source parameters. Under the geological principle of "The present is the key of the past", this paper takes the landslides triggered by the Tongwei M7.5 earthquake in AD 1718 as the research object, using the methods of the historical literature analysis, remote sensing interpretation and fieldwork, obtains the Tongwei Earthquake Landslide Database (TELD). This paper finds that: (1) The total number of the database is 5019, with the whole area of 635 km2, where densely distributed around the Tongwei Fault and coincided with the X-degree isoseismal line, but both extend to westward and to northward about 20 km; (2) compared with the 2008 Wenchuan Earthquake Landslide Database (WELD), the TELD lacks a large number of ones with area range of 103~104 m2, even <103 m2, while the ones of >104 m2 range both with a similar distribution; (3) this "incomplete" TELD can reflect the overall characteristics of the large and medium-sized landslides in the epicentral region, and define the exact range of the epicentral region; (4) in the epicentral region, at least 27 of settlements are directly named by "landsliding" etc., these residential settlements affected by landsliding are concentrated on both sides of the Tongwei Fault, which account for 50%. The earthquake triggered landslides is one of the decisive catastrophic factors that caused more than 70000 people death. Our paper shows that only confirming the regional dense landslides triggered by a single historical strong earthquake, and excluding other far-field strong shocking, using the multitemporal high-resolution satellite images interpretation to obtain a "relatively complete" landslide database. It provides basic data for revising source parameters of historical strong earthquakes around Loess Plateau in China. © 2020, Science Press. All right reserved.
AUTHOR KEYWORDS: AD 1718 Tongwei earthquake; Earthquake triggered landslides; Google Earth; Loess Plateau; Remote sensing Interpretation
INDEX KEYWORDS: Database systems; Faulting; Landforms; Landslides; Remote sensing; Sediments; AD 1718 tongwei earthquake; Case-studies; Earthquake-triggered landslides; Epicentral region; Google earths; Landsliding; Loess Plateau; Remote sensing interpretation; Seismogenic faults; Strong earthquakes; Earthquakes; fault zone; image resolution; landslide; mortality; remote sensing; residential location; satellite imagery; Sichuan earthquake 2008; source parameters; China; Gansu; Tongwei
REFERENCES: Chinese Journal of Geophys, (2012); 
Journal of Seismological Research, (2006); 
Cheng, Jia, An Mw -based historical earthquake catalog for Mainland China, Bulletin of the Seismological Society of America, 107, 5, pp. 2490-2500, (2017); 
Landslides Types Mechanisms and Modeling, (2012); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Catalogue of Chinese Strong Historical Earthquakes, (1995); 
Catalogue of Chinese Earthquakes 1831 BC 1969 AD, (1989); 
Guzzetti, Fausto, Landslide volumes and landslide mobilization rates in Umbria, central Italy, Earth and Planetary Science Letters, 279, 3-4, pp. 222-229, (2009); 
Hovius, Niels, Prolonged seismically induced erosion and the mass balance of a large earthquake, Earth and Planetary Science Letters, 304, 3-4, pp. 347-355, (2011); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lan, J., Chen, X.-L.
AUTHOR FULL NAMES: Lan, Jian (57208618720); Chen, Xiaoli (8346444100)
57208618720; 8346444100
Evolution characteristics of landslides triggered by 2008 MS8.0 Wenchuan earthquake in Yingxiu area 2008年MS8.0汶川地震诱发滑坡灾害在映秀地区的演化特征
(2020) Dizhen Dizhi, 42 (1), pp. 125 - 146, Cited 7 times.
DOI: 10.3969/j.issn.0253-4967.2020.01.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084955716&doi=10.3969%2Fj.issn.0253-4967.2020.01.009&partnerID=40&md5=3533f9938c58426fa79487589393f04a

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Strong earthquakes can not only trigger a large number of co-seismic landslides in mountainous areas, but also have an important impact on the development level of geological hazards in the disaster area. Usually, geological hazards caused by strong earthquakes will significantly increase and continue for a considerable period of time before they recover to the pre-earthquake level. Therefore, studying the evolution characteristics of landslides triggered by earthquake is particularly important for the prevention of geological disaster. In this paper, a 66km2 region in Yingxiu near the epicenter of the 2008 M<inf>S</inf>8.0 Wenchuan earthquake, which was strongly disturbed by the earthquake, was investigated. Firstly, one high-resolution satellite image before the earthquake(April, 2005)and five high-resolution satellite images after the earthquake(June, 2008; April, 2011; April, 2013; May, 2015; May, 2017)were used to interpret and catalog multi-temporal landslide inventories. Secondly, seven primary factors were analyzed in the GIS platform, including elevation, slope, aspect, curvature, stratum, lithology, and the distance from the nearest water system and the distance from seismogenic faults. Finally, the evolution of the landslide triggered by earthquake in this region was analyzed by comparing the landslide activity intensity in different periods, using the methods of correlation analysis, regression analysis, and single-factor statistical analysis. It was found that the total area of landslides in the study region decreased sharply from 2008 to 2017, with the area of the co-seismic landslide reducing from 21.41km2 to 1.33km2. This indicates that the magnitude of the landslides has recovered or is close to the pre-earthquake level. Moreover, correlation analysis shows that the elevation has a strong positive correlation with the distance from the nearest water system, and a weak positive correlation with the area. Meanwhile, there is a weak negative correlation between the distance from the nearest water system and the distance from seismogenic faults. Overall, the degree of landslide activity in the study region decreased over time, as well as the number of reactivated landslides and new landslides. The region where the area of earthquake triggered landslides decreased mainly concentrated at an elevation of 1000m to 2100m, a slope of 30° to 55°, an aspect of 40° to 180°, and a curvature of -2 to 2. In addition, the lithology of the Pengguan complex in the Yingxiu study region is more conducive to the occurrence of landslides, while the sedimentary rock is more conducive to the landslide recovery. When the distance from the nearest water system is more than 1600m, the effect of the water system on the landslides gradually decreases. Also, the landslides triggered by Wenchuan earthquake in this area have the characteristics of the hanging wall effect, which means, the number of landslides in the northwestern region is much higher than that in the southeast side. © 2020, Editorial Office of Seismology and Geology. All right reserved.
AUTHOR KEYWORDS: Correlation analysis; Earthquake-triggered landslides; Evolution pattern; Geohazard in strong earthquake area; Wenchuan earthquake
INDEX KEYWORDS: Correlation methods; Disaster prevention; Disasters; Faulting; Hazards; Landslides; Lithology; Recovery; Regression analysis; Sedimentary rocks; Waterworks; Correlation analysis; Earthquake-triggered landslides; Evolution characteristics; High resolution satellite images; Landslide inventories; Negative correlation; Positive correlations; Pre-earthquake levels; Earthquakes; coseismic process; development level; earthquake epicenter; earthquake magnitude; earthquake trigger; geological hazard; hanging wall; landslide; mountain region; satellite imagery; seismic hazard; tectonic evolution; China; Sichuan; Yingxiu
REFERENCES: Chen, Guihua, Quantitative analysis of the co-seismic surface rupture of the 2008 Wenchuan earthquake, Sichuan, China along the Beichuan-Yingxiu fault, Dizhen Dizhi, 30, 3, pp. 723-738, (2008); 
Chen, Xiaoli, Analysis of landslides triggered by Wenchuan earthquake, Dizhen Dizhi, 33, 1, pp. 191-202, (2011); 
Chen, Xiaoli, Study on the fault mechanics influences on the landslides distribution: a case study from the Wenchuan earthquake, Dizhen Dizhi, 36, 2, pp. 358-367, (2014); 
Chen, Xiaoli, Applying the Newmark's model to the assessment of earthquake-triggered landslides during the Lushan earthquake, Dizhen Dizhi, 35, 3, pp. 661-670, (2013); 
Ge, Hua, The assessment and mapping of seismic landslide hazards: A case study of Yingxiu area, Sichuan Province, Geology in China, 40, 2, pp. 644-652, (2013); 
Journal of Engineering Geology, (2011); 
Li, Xiuzhen, Analysis on characteristics and deformation failure mode of large-scale landslides induced by '5·12' Wenchuan Earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 72-77, (2009); 
World Information on Earthquake Engineering, (1999); 
Chinese Journal of Rock Mechanics and Engineering, (2004); 
Spatial Distribution and Geometrical Characteristic of Landslides Related to the 2013 Minxian Earthquake of Gansu Province, (2016)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lu, L.
AUTHOR FULL NAMES: Lu, Huang (56652807900)
56652807900
Research on meteorological early-warning model of landslides in Wenchuan earthquake area based on machine learning 基于机器学习的汶川震区滑坡灾害气象预警模型研究
(2020) Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 49 (2), pp. 267, Cited 7 times.
DOI: 10.11947/j.AGCS.2020.20190061
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082017630&doi=10.11947%2Fj.AGCS.2020.20190061&partnerID=40&md5=9e72f7d7edf5ae277355bf2cac731537

AFFILIATIONS: Hubei Institute of Surveying and Mapping, Wuhan, Hubei, China
INDEX KEYWORDS: early warning system; landslide; machine learning; research work; Sichuan earthquake 2008
PUBLISHER: SinoMaps Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, S., Chen, J., Xu, C., Zhou, W., Yao, L., Yue, W., Cui, Z.
AUTHOR FULL NAMES: Wu, Saier (56491673800); Chen, Jian (55717623400); Xu, Chong (35184309900); Zhou, Wendy (57218989460); Yao, Leihua (57218962608); Yue, Wen (57201302772); Cui, Zhijiu (7202504455)
56491673800; 55717623400; 35184309900; 57218989460; 57218962608; 57201302772; 7202504455
Susceptibility Assessments and Validations of Debris-Flow Events in Meizoseismal Areas: Case Study in China's Longxi River Watershed
(2020) Natural Hazards Review, 21 (1), art. no. 05019005, Cited 25 times.
DOI: 10.1061/(ASCE)NH.1527-6996.0000347
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076642284&doi=10.1061%2F%28ASCE%29NH.1527-6996.0000347&partnerID=40&md5=3cf888d83a60cb4098e797ad9b05ecb2

AFFILIATIONS: School of Engineering and Technology, Beijing, China; Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO, United States; College of Urban and Environmental Sciences, Peking University, Beijing, China
ABSTRACT: The 2008 Wenchuan earthquake triggered tens of thousands of landslides, resulting in rich loose materials for the 8.13 debris flows. Longchi Town in southwest China's Sichuan Province was one of the worst hit areas both by the Wenchuan earthquake and 8.13 debris flows. The loose source materials generated by coseismic landslides in the Longxi River watershed of the upper Min River are widely distributed and cover an area of 7.97 km2. The volume has reached as high as 13,364.99×104 m3. After catastrophic debris flows occurred in Longchi Town on August 13, 2010, there were still large amounts of loose debris remaining. This presented major potential risks for additional debris-flow formations in the meizoseismal region. In this paper, an index of entropy models and logistical regression models was implemented for the purpose of identifying the areas that were potentially susceptible to debris-flow formations based on the same catchment units. In order to reflect the impacts of the Wenchuan earthquake on the subsequent debris-flow events, the volumes of the source debris accumulations were calculated in each catchment unit. These were then incorporated into the models as controlling factors. The performances of the models were evaluated using the receiver operating characteristic curve (ROC) technique. Then, the quality ratings of the susceptibility maps were compared and verified using the results of the field investigations. The spatial mismatches of the index of entropy (IE) and logistic regression (LR) models with the observed best predictive abilities were 16.7% and 8.3%, respectively, were revealed in the susceptibility maps. The LR model showed better performance results in the division of the susceptibility zones, and also in the reliability and robustness of the assessment results. The two models had both incorporated a spectrum of the leading factors for the debris-flow occurrences, including the lithology; distances from the coseismic surface fault-ruptures; densities of the loose source material; monthly average precipitation rates; and slope gradient rates, which are necessary for debris-flow formations in strong seismic zones. The debris-flow prone areas were found to be mainly distributed within 4 km of the Beichuan-Yingxiu fault. Furthermore, the verification results showed that more than 90% of the actual debris flows were distributed in the very high and high susceptibility zones. Sufficient attention should be paid to debris-flow prevention and early warning procedures in very high and high susceptibility zones. The results of this study provided practical implications for developing debris-flow disaster management and hazard mitigation strategies in similar earthquake-prone environments. © 2019 American Society of Civil Engineers.
AUTHOR KEYWORDS: Debris flow; Index of entropy models; Logistical regression models; Loose source material; Meizoseismal areas; Susceptibility assessments
INDEX KEYWORDS: Catchments; Disaster prevention; Disasters; Earthquakes; Entropy; Faulting; Landslides; Lithology; Regression analysis; Rivers; Runoff; Watersheds; Debris flows; Entropy model; Meizoseismal areas; Regression model; Source material; Debris; assessment method; catchment; debris flow; disaster management; earthquake; entropy; index method; model validation; numerical model; regression analysis; seismic method; watershed; Beichuan; China; Gansu; Longxi; Min River [Sichuan]; Sichuan; Yingxiu
REFERENCES: Carrara, Alberto, Comparing models of debris-flow susceptibility in the alpine environment, Geomorphology, 94, 3-4, pp. 353-378, (2008); 
Chang, Ming, Evolution process of sediment supply for debris flow occurrence in the Longchi area of Dujiangyan City after the Wenchuan earthquake, Landslides, 12, 3, pp. 611-623, (2015); 
Chang, Ming, Debris flow susceptibility assessment using a probabilistic approach: A case study in the Longchi area, Sichuan province, China, Journal of Mountain Science, 11, 4, pp. 1001-1014, (2014); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Journal of Mountain Science, (2008); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Devkota, Krishna Chandra, Landslide susceptibility mapping using certainty factor, index of entropy and logistic regression models in GIS and their comparison at Mugling-Narayanghat road section in Nepal Himalaya, Natural Hazards, 65, 1, pp. 135-165, (2013); 
Ding, Hairong, Increased sediment discharge driven by heavy rainfall after Wenchuan earthquake: A case study in the upper reaches of the Min River, Sichuan, China, Quaternary International, 333, pp. 122-129, (2014); 
Hairong, Ding, Mechanism of post-seismic floods after the Wenchuan earthquake in the upper Minjiang river, China, Journal of Earth System Science, 126, 7, (2017)
PUBLISHER: American Society of Civil Engineers (ASCE) onlinejls@asce.org 1801 Alexander Bell DriveGEO Reston VA 20191 Alabama
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ali, A.P., Fan, X., Tang, X., Dou, D., Xu, Q., Huang, R.
AUTHOR FULL NAMES: Ali, P. Yunus (56600185700); Fan, Xuanmei (12752112800); Tang, Xiaolu (55743734800); Dou, Jie (56017411000); Xu, Qiang (56506033600); Huang, Runqiu (55835407700)
56600185700; 12752112800; 55743734800; 56017411000; 56506033600; 55835407700
Corrigendum to “Decadal vegetation succession from MODIS reveals the spatio-temporal evolution of post-seismic landsliding after the 2008 Wenchuan earthquake” (Remote Sensing of Environment (2020) 236, (S003442571930495X), (10.1016/j.rse.2019.111476))
(2020) Remote Sensing of Environment, 237, art. no. 111541, Cited 4 times.
DOI: 10.1016/j.rse.2019.111541
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075300794&doi=10.1016%2Fj.rse.2019.111541&partnerID=40&md5=8a04e4a4f75738aafaddda37fd07493c

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; College of Earth Sciences, Chengdu University of Technology, Chengdu, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, China; Nagaoka University of Technology, Nagaoka, Niigata, Japan
ABSTRACT: The authors regret that the study area was mislocated in the Fig. 1, the error does not change any analysis and/or reference to them in the text, and has no implications on the results and conclusions. Follow the updated Fig. 1. [Figure presented] The authors would like to apologise for any inconvenience caused. © 2019 Elsevier Inc.
PUBLISHER: Elsevier Inc. usjcs@elsevier.com
DOCUMENT TYPE: Erratum
PUBLICATION STAGE: Final

Bi, P., Che, A., Yuan, G.
AUTHOR FULL NAMES: Bi, Pengcheng (58740665600); Che, Ailan (13404219700); Yuan, Ganglie (57211226912)
58740665600; 13404219700; 57211226912
Displacement evolution of rock slope under earthquake based on shaking table test 基于振动台试验的岩质边坡地震位移演化
(2020) Chinese Journal of Geological Hazard and Control, 31 (3), pp. 11 - 19, Cited 4 times.
DOI: 10.16031/j.cnki.issn.1003-8035.2020.03.02
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142336686&doi=10.16031%2Fj.cnki.issn.1003-8035.2020.03.02&partnerID=40&md5=6b12722bf7a688200b5f53bad609d2ca

AFFILIATIONS: Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
ABSTRACT: Rock slope failure frequently occurs in Wenchuan earthquake area. The research on the characteristics of displacement response to rock slope will be significant to the slope monitoring and early warning in this area. In view of the abutment slope of Jinsha River bridge, the shaking table model test considering steeply dipping-structured surface and connective structural surface is carried out. The basalt is simulated by using mixture of cement, sand, clay and iron powder, and the tuff is simulated by PVC material. The real-time displacement data of the slope surface are collected by the optical measurement system, and the distribution and evolution of PGD (Peak Ground Displacement) are analyzed. The results show that the evolution of PGD both in horizontal and vertical cases are basically the same. PGD showed the tendency of linear increase before the intensity of earthquake up to VI degree. Relative displacement of slope model was 1.5 cm on steeply dipping-structured surface when the intensity hit VI degree. When the intensity of earthquake was greater than VI degree, PGD is accelerated amplified, and then the slope was in unstable state. When the intensity reached to DC degree, the slope showed overall sliding failure mode, shearing from steeply dipping-structured surface to the slope toe. © 2020 Editorial Office of The Chinese Journal of Geological Hazards and Control. All rights reserved.
AUTHOR KEYWORDS: displacement evolution; rock slope; shaking table test; slope failure mechanism
REFERENCES: Journal of Engineering Geology, (2009); 
China Earthquake Engineering Journal, (2013); 
Kokusho, Takaji, Energy approach for earthquake induced slope failure evaluation, Soil Dynamics and Earthquake Engineering, 26, 2-4 SPEC. ISS., pp. 221-230, (2006); 
Earthquake Engineering and Engineering Dynamics, (2016); 
Chinese Journal of Underground Space and Engineering, (2011); 
Damage to highway bridges during wenchuan earthquake, 29, 3, pp. 84-94; 
Fan, Gang, Energy identification method for dynamic failure mode of bedding rock slope with soft strata, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 38, 5, pp. 959-966, (2016); 
Dong, Jinyu, The large-scale shaking table test study of dynamic response and failure mode of bedding rock slope under earthquake, Yantu Lixue/Rock and Soil Mechanics, 32, 10, pp. 2977-2988, (2011); 
Earthquake Engineering and Engineering Dynamics, (2015); 
Lin, Meei Ling, Seismic slope behavior in a large-scale shaking table model test, Engineering Geology, 86, 2-3, pp. 118-133, (2006)
PUBLISHER: Editorial Office of The Chinese Journal of Geological Hazards and Control
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cui, W., He, X., Yao, M., Wang, Z., Li, J., Hao, Y., Wu, W., Zhao, H., Chen, X., Cui, W.
AUTHOR FULL NAMES: Cui, Wenqi (57211061916); He, Xin (57221137798); Yao, Meng (57208755211); Wang, Ziwei (56405232600); Li, Jie (57843010000); Hao, Yuanjie (57211057280); Wu, Weijie (57211059420); Zhao, Huilin (57198972401); Chen, Xianfeng (13104634000); Cui, Wei (57200329935)
57211061916; 57221137798; 57208755211; 56405232600; 57843010000; 57211057280; 57211059420; 57198972401; 13104634000; 57200329935
Landslide image captioning method based on semantic gate and bi-temporal LSTM
(2020) ISPRS International Journal of Geo-Information, 9 (4), art. no. 194, Cited 19 times.
DOI: 10.3390/ijgi9040194
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082764726&doi=10.3390%2Fijgi9040194&partnerID=40&md5=43629e88f5e00fd95e6abd88d5f1dd4f

AFFILIATIONS: School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, China
ABSTRACT: When a landslide happens, it is important to recognize the hazard-affected bodies surrounding the landslide for the risk assessment and emergency rescue. In order to realize the recognition, the spatial relationship between landslides and other geographic objects such as residence, roads and schools needs to be defined. Comparing with semantic segmentation and instance segmentation that can only recognize the geographic objects separately, image captioning can provide richer semantic information including the spatial relationship among these objects. However, the traditional image captioning methods based on RNNs have two main shortcomings: the errors in the prediction process are often accumulated and the location of attention is not always accurate which would lead to misjudgment of risk. To handle these problems, a landslide image interpretation network based on a semantic gate and a bi-temporal long-short term memory network (SG-BiTLSTM) is proposed in this paper. In the SG-BiTLSTM architecture, a U-Net is employed as an encoder to extract features of the images and generate the mask maps of the landslides and other geographic objects. The decoder of this structure consists of two interactive long-short term memory networks (LSTMs) to describe the spatial relationship among these geographic objects so that to further determine the role of the classified geographic objects for identifying the hazard-affected bodies. The purpose of this research is to judge the hazard-affected bodies of the landslide (i.e., buildings and roads) through the SG-BiTLSTM network to provide geographic information support for emergency service. The remote sensing data was taken by Worldview satellite after the Wenchuan earthquake happened in 2008. The experimental results demonstrate that SG-BiTLSTM network shows remarkable improvements on the recognition of landslide and hazard-affected bodies, compared with the traditional LSTM (the Baseline Model), the BLEU1 of the SG-BiTLSTM is improved by 5.89%, the matching rate between the mask maps and the focus matrix of the attention is improved by 42.81%. In conclusion, the SG-BiTLSTM network can recognize landslides and the hazard-affected bodies simultaneously to provide basic geographic information service for emergency decision-making. © 2020 by the authors.
AUTHOR KEYWORDS: Bi-temporal LSTM; Image captioning; Landslide; Semantic segmentation
REFERENCES: Piralilou, Sepideh Tavakkoli, Landslide detection using multi-scale image segmentation and different machine learning models in the higher himalayas, Remote Sensing, 11, 21, (2019); 
Al-Rawabdeh, Abdulla, Using an unmanned aerial vehicle-based digital imaging system to derive a 3D point cloud for landslide scarp recognition, Remote Sensing, 8, 2, (2016); 
Scaioni, M., Remote sensing for landslide investigations: An overview of recent achievements and perspectives, Remote Sensing, 6, 10, pp. 9600-9652, (2014); 
Sun, Ruiling, A review of risk analysis methods for natural disasters, Natural Hazards, 100, 2, pp. 571-593, (2020); 
Chen, Lu, Regional disaster risk evaluation of China based on the universal risk model, Natural Hazards, 89, 2, pp. 647-660, (2017); 
Gao, Jingmin, Identification and estimation of landslide-debris flow disaster risk in primary and middle school campuses in a mountainous area of Southwest China, International Journal of Disaster Risk Reduction, 25, pp. 60-71, (2017); 
Zhang, Wei, HJ-1 satellite's stable operation 3 anniversaries and disaster reduction application, (2012); 
J Eng Geol, (2018); 
Qi, Wenhua, High-resolution remote sensing-based method for determining the changes of loss risk from Earthquake-induced Geohazard-chain, pp. 183-186, (2013); 
Yang, Haiping, Semantic segmentation of high spatial resolution images with deep neural networks, GIScience and Remote Sensing, 56, 5, pp. 749-768, (2019)
PUBLISHER: MDPI AG rasetti@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Qi, Y., Wu, L., He, M., Mao, W.
AUTHOR FULL NAMES: Qi, Yuan (57207795977); Wu, Lixin (55714061400); He, Miao (57217472217); Mao, Wenfei (57200606801)
57207795977; 55714061400; 57217472217; 57200606801
Spatio-Temporally Weighted Two-Step Method for Retrieving Seismic MBT Anomaly: May 2008 Wenchuan Earthquake Sequence Being a Case
(2020) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13, art. no. 8962192, pp. 382 - 391, Cited 35 times.
DOI: 10.1109/JSTARS.2019.2962719
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080893161&doi=10.1109%2FJSTARS.2019.2962719&partnerID=40&md5=a09bedf7191964c44cdaec48bcac5a55

AFFILIATIONS: School of Geoscience and Info-Physics, Central South University, Changsha, Hunan, China; College of Resources and Civil Engineering, Shenyang, Liaoning, China
ABSTRACT: Referring to the first law of geography and its extension in time domain, this research makes improvements on the two-step method (TSM) presented to retrieve seismic microwave brightness temperature (MBT) anomaly, and a new method named spatio-temporally weighted TSM (STW-TSM) is developed. Temporally weighted background is calculated using nonseismic data according to respective time intervals with the shocking year, and applied to remove long-term trend so as to retrieve basic MBT residuals. Spatially weighted background is calculated referring to Euclidean geospatial distance away from the epicenter, and applied to eliminate local meteorological noise so as to retrieve cleaned MBT residuals. With May 2008 Wenchuan earthquake sequence being a case study, significant seismic MBT anomalies at H and V polarizations, 10 days before and after the May 12 Mw7.9 main shock, were retrieved using STW-TSM at 6.9, 10.7, 18.7, and 36.5 GHz, respectively. This study shows that the newly developed STW-TSM is much more qualified. More significant seismic MBT anomalies at H polarization was retrieved as compared to V polarization. More detailed and localized MBT anomalies was uncovered from high frequency bands at 18.7 and 36.5 GHz, while much remarkable anomalies (but less details) were obtained from low frequency bands at 6.9 and 10.7 GHz. This research is valuable for satellite MBT observation, seismic anomaly analysis, and earthquake precursor study. © 2008-2012 IEEE.
AUTHOR KEYWORDS: Advanced Microwave Scanning Radiometer for the Earth Observing System; microwave brightness temperature (MBT); seismic anomaly; spatio-temporally weighted; two-step method (TSM)
INDEX KEYWORDS: Luminance; Polarization; Temperature; Time domain analysis; Advanced Microwave Scanning Radiometer for the Earth Observing System; Microwave brightness temperature; seismic anomaly; spatio-temporally weighted; Two step method; Earthquakes; AMSR-E; brightness temperature; polarization; remote sensing; satellite data; seismic wave; Sichuan earthquake 2008; spatiotemporal analysis; trend analysis
REFERENCES: Proc Acad Sci USSR, (1988); 
Qiang, Zuji, Thermal infrared anomaly precursor of impending earthquakes, Pure and Applied Geophysics, 149, 1, pp. 159-171, (1997); 
Chinese Science Bulletin, (1991); 
Piroddi, Luca, Night thermal gradient: A New potential tool for earthquake precursors studies. An application to the seismic area of L'Aquila (central Italy), IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 5, 1, pp. 307-312, (2012); 
Tronin, A. A., Satellite thermal survey—A new tool for the study of seismoactive regions, International Journal of Remote Sensing, 17, 8, pp. 1439-1455, (1996); 
Tronin, A. A., Thermal IR satellite data application for earthquake research in Japan and China, Journal of Geodynamics, 33, 4-5, pp. 519-534, (2002); 
Ouzounov, D., Mid-infrared emission prior to strong earthquakes analyzed by remote sensing data, Advances in Space Research, 33, 3, pp. 268-273, (2004); 
Saraf, Arun Kumar, Satellite detects surface thermal anomalies associated with the Algerian earthquakes of May 2003, International Journal of Remote Sensing, 26, 13, pp. 2705-2713, (2005); 
J Ind Geophys Union, (2005); 
Tramutoli, Valerio, Assessing the potential of thermal infrared satellite surveys for monitoring seismically active areas: The case of Kocaeli (İzmit) earthquake, August 17, 1999, Remote Sensing of Environment, 96, 3-4, pp. 409-426, (2005)
PUBLISHER: Institute of Electrical and Electronics Engineers
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Chen, G., Li, X., Gong, W., Xu, H.
AUTHOR FULL NAMES: Chen, Guanyu (57193015233); Li, Xiang (57195533852); Gong, Wenyin (23090822300); Xu, Hui (59610132400)
57193015233; 57195533852; 23090822300; 59610132400
Recognition of the landslide disasters with extreme learning machine
(2020) International Journal of Computational Science and Engineering, 21 (1), pp. 84 - 94, Cited 6 times.
DOI: 10.1504/IJCSE.2020.105215
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080032967&doi=10.1504%2FIJCSE.2020.105215&partnerID=40&md5=a300661681bba60808264d2df32dcc61

AFFILIATIONS: School of Computer Science, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: The geological disasters of landslides induced by the Wenchuan earthquake are great in number so landslide disaster recognition and investigation must be conducted in the early stage of large construction planning in the disaster area. In recent years, the studies on image recognition focus on the extreme learning machine algorithm. Based on the preprocessing of remote sensing images, this paper conducts landslide recognition with remote sensing images through the extreme learning machine classification combined with colour and texture features of ground objects. The comparison experiments of landslide recognition with the support vector machine algorithm shows that the recognition accuracy of the extreme learning machine algorithm is not much different from that of the SVM algorithm, but the extreme learning machine takes short time in training with absolute advantage. © © 2020 Inderscience Enterprises Ltd.
AUTHOR KEYWORDS: Computational science engineering; Extreme learning machine; Geological disaster; Image classification; Image recognition; Landslide disasters; Landslide recognition; Neural networks; Remote sensing image
INDEX KEYWORDS: Disasters; Earthquakes; Geology; Image classification; Image recognition; Knowledge acquisition; Landslides; Learning algorithms; Neural networks; Remote sensing; Support vector machines; Textures; Computational science; Construction planning; Extreme learning machine; Geological disaster; Recognition accuracy; Remote sensing images; Support vector machine algorithm; Wenchuan Earthquake; Learning systems
REFERENCES: Agrawal, K. P., Fusion of statistical and machine learning approaches for time series prediction using earth observation data, International Journal of Computational Science and Engineering, 14, 3, pp. 255-266, (2017); 
International Journal of Hybrid Intelligent Systems, (2014); 
Chen, Feng, CUDA-based PSO-trained neural network for computation of resonant frequency of circular microstrip antenna, International Journal of Computational Science and Engineering, 14, 3, pp. 211-221, (2017); 
Geological Science and Technology Information, (2016); 
Chen, Yong, A traffic identification based on PSO-RBF neural network in peer-to-peer network, International Journal of Computational Science and Engineering, 13, 2, pp. 158-164, (2016); 
International Journal of Applied Pattern Recognition, (2016); 
He, Bo, Fast Face Recognition Via Sparse Coding and Extreme Learning Machine, Cognitive Computation, 6, 2, pp. 264-277, (2014); 
Huang, G. B., Incremental extreme learning machine with fully complex hidden nodes, Neurocomputing, 71, 4-6, pp. 576-583, (2008); 
Huang, G. B., Extreme learning machine: A new learning scheme of feedforward neural networks, IEEE International Conference on Neural Networks - Conference Proceedings, 2, pp. 985-990, (2004); 
Huang, G. B., Extreme learning machine: Theory and applications, Neurocomputing, 70, 1-3, pp. 489-501, (2006)
PUBLISHER: Inderscience Publishers
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ma, H., Liu, Y., Ren, Y., Yu, J.
AUTHOR FULL NAMES: Ma, Haojie (57205241246); Liu, Yalan (8937210700); Ren, Yuhuan (59157824300); Yu, Jingxian (57215003087)
57205241246; 8937210700; 59157824300; 57215003087
Detection of collapsed buildings in post-earthquake remote sensing images based on the improved YOLOv3
(2020) Remote Sensing, 12 (1), art. no. 44, Cited 150 times.
DOI: 10.3390/RS12010044
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079621228&doi=10.3390%2FRS12010044&partnerID=40&md5=5e873a65b9211e2b2814b517d9cbccd4

AFFILIATIONS: Aerospace Information Research Institute, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: An important and eective method for the preliminary mitigation and relief of an earthquake is the rapid estimation of building damage via high spatial resolution remote sensing technology. Traditional object detection methods only use artificially designed shallow features on post-earthquake remote sensing images, which are uncertain and complex background environment and time-consuming feature selection. The satisfactory results from them are often dicult. Therefore, this study aims to apply the object detection method You Only Look Once (YOLOv3) based on the convolutional neural network (CNN) to locate collapsed buildings from post-earthquake remote sensing images. Moreover, YOLOv3 was improved to obtain more eective detection results. First, we replaced the Darknet53 CNN in YOLOv3 with the lightweight CNN ShueNet v2. Second, the prediction box center point, XY loss, and prediction box width and height, WH loss, in the loss function was replaced with the generalized intersection over union (GIoU) loss. Experiments performed using the improved YOLOv3 model, with high spatial resolution aerial remote sensing images at resolutions of 0.5 m after the Yushu and Wenchuan earthquakes, show a significant reduction in the number of parameters, detection speed of up to 29.23 f/s, and target precision of 90.89%. Compared with the general YOLOv3, the detection speed improved by 5.21 f/s and its precision improved by 5.24%. Moreover, the improved model had stronger noise immunity capabilities, which indicates a significant improvement in the model's generalization. Therefore, this improved YOLOv3 model is eective for the detection of collapsed buildings in post-earthquake high-resolution remote sensing images. © 2019 by the authors.
AUTHOR KEYWORDS: Damage information for collapsed buildings; Deep learning; Earthquake; Object detection; Remote sensing image; YOLOv3
INDEX KEYWORDS: Antennas; Buildings; Convolutional neural networks; Damage detection; Deep learning; Earthquakes; Image resolution; Object detection; Object recognition; Remote sensing; Collapsed buildings; Generalized intersection; High resolution remote sensing images; High spatial resolution; Object detection method; Remote sensing images; Remote sensing technology; YOLOv3; Image enhancement
REFERENCES: Dell’Acqua, Fabio, Remote sensing and earthquake damage assessment: Experiences, limits, and perspectives, Proceedings of the IEEE, 100, 10, pp. 2876-2890, (2012); 
Research on Remote Sensing Application Technology for Earthquake Damage Assessment, (2007); 
Cooner, Austin J., Detection of urban damage using remote sensing and machine learning algorithms: Revisiting the 2010 Haiti earthquake, Remote Sensing, 8, 10, (2016); 
Uprety, Pralhad, Damage detection using high-resolution SAR imagery in the 2009 L'Aquila, Italy, earthquake, Earthquake Spectra, 29, 4, pp. 1521-1535, (2013); 
Procedia Earth and Planetary Science, (2015); 
Gong, Lixia, Earthquake building damage detection with object-oriented change detection, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3674-3677, (2013); 
Ye, Xin, Damaged building detection based on GF-1 satellite remote sensing image: A case study for Nepal MS8.1 earthquake, Acta Seismologica Sinica, 38, 3, pp. 477-485, (2016); 
Dong, Laigen, A comprehensive review of earthquake-induced building damage detection with remote sensing techniques, ISPRS Journal of Photogrammetry and Remote Sensing, 84, pp. 85-99, (2013); 
Janalipour, Milad, A Fuzzy-GA Based Decision Making System for Detecting Damaged Buildings from High-Spatial Resolution Optical Images, Remote Sensing, 9, 4, (2017); 
Dai, Weicong, Real-time airplane detection algorithm in remote-sensing images based on improved YOLOv3, Guangdian Gongcheng/Opto-Electronic Engineering, 45, 12, (2018)
PUBLISHER: MDPI AG indexing@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

He, A., Singh, R.P.
AUTHOR FULL NAMES: He, Anhua (26422949100); Singh, Ramesh P. (57207365326)
26422949100; 57207365326
Coseismic Groundwater Temperature Response Associated with the Wenchuan Earthquake
(2020) Pure and Applied Geophysics, 177 (1), pp. 109 - 120, Cited 24 times.
DOI: 10.1007/s00024-019-02097-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076538469&doi=10.1007%2Fs00024-019-02097-4&partnerID=40&md5=2467d69f4253c9c1870a389ab5b7906b

AFFILIATIONS: Key Laboratory of Crustal Dynamics, China Earthquake Administration, Beijing, China; Beijing Engineering Research Center of Earthquake Observation, Beijing, Beijing, China; School of Life and Environmental Sciences, Chapman University, Orange, CA, United States
ABSTRACT: Various physical, geophysical, geochemical, electrical and hydrological parameters are measured on the surface and in shallow/deep boreholes throughout mainland China to obtain early warning signals of impending earthquakes. Numerous wells are equipped with water level and temperature sensors for continuous observations of the water level and groundwater temperature. An analysis of water temperature data from boreholes equipped with water temperature sensors reveals that nearly half of the boreholes show coseismic response associated with the Wenchuan earthquake (M<inf>w</inf> 7.9, 12 May, 2008). The coseismic response of the groundwater temperature cannot be differentiated from the groundwater flow or movement when the earthquake occurred, but there is no fixed relationship between the temperature variation and the water flow. At the same time, we observed that the rock temperature in dry wells can record the seismic events and even the pre-seismic abnormal information. The spatial distribution of the coseismic groundwater temperature response is random and irregular, which does not support the dislocation model of seismic faults at the regional or larger scale. Changes in the groundwater temperature are closely related to the borehole temperature gradient, lithology profile and geological environment of the borehole and depths of the aquifers. The mechanism of the coseismic groundwater temperature response can be explained by an enhanced permeability induced by an earthquake. The groundwater temperature increases if the temperature sensor in the borehole is located near the deep-circulating aquifer and decreases if the sensor is near the shallow-circulating aquifer when seismic waves arrive. The groundwater temperature may be slightly affected or even unchanged if the temperature sensor is far from the aquifer during the propagation of seismic waves. However, it was hard to conclude the changes of rock temperature observed in six dry wells. © 2019, Springer Nature Switzerland AG.
AUTHOR KEYWORDS: coseismic mechanism of groundwater temperature; Coseismic temperature response; groundwater temperature; well-aquifer system; Wenchuan earthquake
INDEX KEYWORDS: Aquifers; Boreholes; Earthquakes; Groundwater flow; Hydrogeology; Lithology; Seismic waves; Temperature; Temperature sensors; Water levels; Aquifer systems; Continuous observation; Geological environment; Groundwater temperatures; Hydrological parameters; Temperature response; Water temperature data; Wenchuan Earthquake; Groundwater resources; aquifer; coseismic process; earthquake damage; earthquake magnitude; groundwater flow; groundwater resource; permeability; Sichuan earthquake 2008; water temperature; wave propagation; China
REFERENCES: Arabelos, Dimitrios N., The use of an outlier detecting method in time series of continuous daily measurements of underground water level and temperature in earthquake prediction investigation, Tectonophysics, 338, 3-4, pp. 315-323, (2001); 
Asteriadis, G., Pre-seismic responses of underground water level and temperature concerning a 4.8 magnitude earthquake in Greece on October 20, 1988, Tectonophysics, 170, 1-2, pp. 165-169, (1989); 
Bull Seismol Soc Am, (1935); 
Bonfanti, Pietro, Medium-term anomalies in groundwater temperature before 1991-1993 Mt. Etna eruption, Journal of Volcanology and Geothermal Research, 73, 3-4, pp. 303-308, (1996); 
Brodsky, Emily E., A mechanism for sustained groundwater pressure changes induced by distant earthquakes, Journal of Geophysical Research: Solid Earth, 108, 8, (2003); 
Che, Yongtai, Mechanisms of water-heat dynamics and earth-heat dynamics of well water temperature micro-behavior, Acta Seismologica Sinica, 36, 1, pp. 106-117, (2014); 
Chen, Daqing, Co-seismic water level, temperature responses of some wells to far-field strong earthquakes and their mechanisms, Dizhen Dizhi, 29, 1, pp. 122-132, (2007); 
Cox, Simon C., Changes in hot spring temperature and hydrogeology of the Alpine Fault hanging wall, New Zealand, induced by distal South Island earthquakes, Geofluids, 15, 1-2, pp. 216-239, (2015); 
Science in China Series D, (2008); 
Cui, Xiaofeng, Research on focal mechanism solutions of Wenchuan earthquake sequence, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 47, 6, pp. 1063-1072, (2011)
PUBLISHER: Birkhauser
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wei, C., Lu, X., Zhang, Y., Guo, Y., Wang, Y.
AUTHOR FULL NAMES: Wei, Congxin (40662167900); Lu, Xiaochun (55687400100); Zhang, Yuansheng (23487593300); Guo, Yingxia (57191440994); Wang, Ying (57192315133)
40662167900; 55687400100; 23487593300; 57191440994; 57192315133
A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake
(2020) Advances in Space Research, 65 (1), pp. 435 - 445, Cited 7 times.
DOI: 10.1016/j.asr.2019.09.019
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073066162&doi=10.1016%2Fj.asr.2019.09.019&partnerID=40&md5=3c9e4997cedebf3218e5798c138e802f

AFFILIATIONS: National Time Service Center, Xi'an, Shaanxi, China; Lanzhou Institute of Seismology, China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Strong earthquakes have an impact on the regional thermal radiation background, which has been both observed and confirmed. This effect produces anomalies in the thermal radiation background (TRBA) and increases the difficulty of extracting a thermal radiation anomaly (TRA) that is associated with an earthquake occurring during the same time period. The extraction and identification of such anomalies has been ignored by previous studies. In this study, we investigate the time-frequency analysis (TFA) method, together with the wavelet filtering of the Daubechies method and the relative power spectrum analysis of the Fourier Welch method to extract and analyse the TRBA caused by the 2008 Wenchuan Ms 8.0 earthquake and the TRA of the 2013 Minxian-Zhangxian Ms 6.6 earthquake using data concerning the brightness temperature of a black body (TBB) from the Fengyun-2 series of geostationary meteorological satellites developed by China. The result showed that this method can effectively extract and analyse the TRBA caused by the Wenchuan earthquake and the TRA of the Minxian-Zhangxian earthquake form a complex background environment. Furthermore, we discussed the impact of the earthquake on the TRBA and segmented the process. The impact is mainly reflected by three aspects; the characteristic period of the TRBA changes, the TRBA occurs at the same time every year, which is identical to the time at which the earthquake anomaly occurred, and the impact process is in stages. We also summarized the correlation between the characteristic parameters of a TRA and the regional thermal radiation background, geography, and climatic factors. © 2019
AUTHOR KEYWORDS: Minxian-Zhangxian Ms 6.6 earthquake; Remote sensing; Temporal-spatial anomalies; Thermal radiation background; Wenchuan Ms 8.0 earthquake
INDEX KEYWORDS: Discrete wavelet transforms; Fourier series; Geostationary satellites; Heat radiation; Radiation; Remote sensing; Spectrum analysis; Time series analysis; Brightness temperatures; Earthquake anomalies; Geostationary meteorological satellites; Radiation background; Spatial anomalies; Strong earthquakes; Time frequency analysis; Wenchuan Earthquake; Earthquakes
REFERENCES: Multiresolution Signal Decomposition, (1992); 
Chen, Shunyun, Normal annual variation field of land surface brightness temperature in China, Dizhen Dizhi, 26, 3, pp. 528-538, (2004); 
Chen, Shunyun, A study on the normal annual variation field of land surface temperature in China, Acta Geophysica Sinica, 52, 9, pp. 2273-2281, (2009); 
undefined, (2000); 
Proc Acad Sci USSR, (1988); 
Guo, Xiao, Variation characteristics of OLR for the Wenchuan earthquake, Acta Geophysica Sinica, 53, 11, pp. 2688-2695, (2010); 
Guo, Xiao, OLR anomalies for the Lushan MS7.0 earthquake, Acta Seismologica Sinica, 35, 5, pp. 731-737, (2013); 
Guo, Xiao, Anomalies of middle infrared brightness before 2008 Yutian MS7.3 and 2010 Yushu MS7.1 earthquakes, Acta Seismologica Sinica, 36, 2, pp. 175-183, (2014); 
Hu, Xingping, Focal mechanism solutions of Wenchuan earthquake and its strong aftershocks obtained from initial P wave polarity analysis, Acta Geophysica Sinica, 51, 6, pp. 1711-1718, (2008); 
Ouzounov, D., Mid-infrared emission prior to strong earthquakes analyzed by remote sensing data, Advances in Space Research, 33, 3, pp. 268-273, (2004)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yan, X., Yu, T., Sun, Y., Xia, C., Zuo, X., Yang, N., Qi, Y., Wang, J.
AUTHOR FULL NAMES: Yan, Xiangxiang (55212708900); Yu, Tao (56421020200); Sun, Yangyi (36198624900); Xia, Chunliang (36505076800); Zuo, Xiaomin (7103215836); Yang, Na (56992121400); Qi, Yifan (57207851670); Wang, Jin (56587728000)
55212708900; 56421020200; 36198624900; 36505076800; 7103215836; 56992121400; 57207851670; 56587728000
Vertical Structure of the Ionospheric Response Following the M w 7.9 Wenchuan Earthquake on 12 May 2008
(2020) Pure and Applied Geophysics, 177 (1), pp. 95 - 107, Cited 5 times.
DOI: 10.1007/s00024-019-02175-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064233564&doi=10.1007%2Fs00024-019-02175-7&partnerID=40&md5=eada92b4272f5cb8ff0d7c909a9fd220

AFFILIATIONS: Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, Hubei, China; Key Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences, Beijing, Beijing, China; State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The response of the vertical ionospheric electron density structure to the Mw 7.9 Wenchuan earthquake on 12 May 2008 was recorded by the FORMOSAT-3/COSMIC (F3/C) radio occultation (RO) precise orbit determination (POD) total electron content (TEC). The horizontal propagation characteristics of the seismo-traveling ionospheric disturbances were identified by combining ground-based Global Navigation Satellite System (GNSS) TEC data and RO TEC data. The postseismic ionospheric infrasound wavefront with wavelength of around 80 km at altitude of 150–350 km was scanned vertically by an individual RO TEC profile. A large amount of TEC profiles around the epicenter from 0000 to 1200 UT provide evidence of continental earthquake-induced vertical oscillations that lasted in the ionosphere for several hours. RO-observed vertical perturbations appear on both the southward and northward sides of the epicenter. The vertical structure of the ionospheric oscillations with wavelength ranging from 10 to 80 km increased with altitude between 230 and 650 km. © 2019, Springer Nature Switzerland AG.
AUTHOR KEYWORDS: ionospheric oscillations; radio occultation; vertical structure; Wenchuan earthquake
INDEX KEYWORDS: Global positioning system; Ionosphere; Ionospheric measurement; Orbits; Global Navigation Satellite Systems; Ionospheric electron densities; ionospheric oscillations; Precise orbit determination; Radio occultations; Traveling ionospheric disturbances; Vertical structures; Wenchuan Earthquake; Earthquakes; COSMIC; earthquake epicenter; electron density; FORMOSAT; GNSS; postseismic process; remote sensing; response analysis; satellite data; Sichuan earthquake 2008; total electron content; China; Sichuan; Wenchuan
REFERENCES: Afraimovich, Edward L., TEC response to the 2008 Wenchuan Earthquake in comparison with other strong earthquakes, International Journal of Remote Sensing, 31, 13, pp. 3601-3613, (2010); 
Alexander, Peter, Interpretation of gravity wave signatures in GPS radio occultations, Journal of Geophysical Research, 113, 16, (2008); 
Anthes, Richard A., The COSMIC/Formosat-3 mission: Early results, Bulletin of the American Meteorological Society, 89, 3, pp. 313-333, (2008); 
Astafyeva, Elvira I., Two-mode long-distance propagation of coseismic ionosphere disturbances, Journal of Geophysical Research: Space Physics, 114, 10, (2009); 
Astafyeva, Elvira I., First ionospheric images of the seismic fault slip on the example of the Tohoku-oki earthquake, Geophysical Research Letters, 38, 22, (2011); 
Berngardt, Oleg I., Vertical midscale ionospheric disturbances caused by surface seismic waves based on Irkutsk chirp ionosonde data in 2011–2016, Journal of Geophysical Research: Space Physics, 122, 4, pp. 4736-4754, (2017); 
Calais, Éric, GPS detection of ionospheric perturbations following the January 17, 1994, Northridge Earthquake, Geophysical Research Letters, 22, 9, pp. 1045-1048, (1995); 
Chen, Shihping, An empirical model of L-band scintillation S4 index constructed by using FORMOSAT-3/COSMIC data, Advances in Space Research, 60, 5, pp. 1015-1028, (2017); 
Chen, Gang, Multisite Remote Sensing for Tsunami-Induced Waves, IEEE Transactions on Geoscience and Remote Sensing, 54, 12, pp. 7177-7184, (2016); 
Choosakul, Nithiwatthn, Excitation of 4-min periodic ionospheric variations following the great Sumatra-Andaman earthquake in 2004, Journal of Geophysical Research: Space Physics, 114, 10, (2009)
PUBLISHER: Birkhauser
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qi, Y., Wu, L., Mao, W., He, M.
AUTHOR FULL NAMES: Qi, Yuan (57207795977); Wu, Lixin (55714061400); Mao, Wenfei (57200606801); He, Miao (57217472217)
57207795977; 55714061400; 57200606801; 57217472217
Mining seismic anomaly from satellite microwave big data: Methodology and case studies
(2019), art. no. 9021488, pp. 1819 - 1823, Cited 1 times.
DOI: 10.1109/PIERS-Fall48861.2019.9021488
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082494204&doi=10.1109%2FPIERS-Fall48861.2019.9021488&partnerID=40&md5=be245eb0210ad38c4fa37c683e1da2fe

AFFILIATIONS: Central South University, Changsha, Hunan, China; Cognition and Predication, Central South University, Changsha, Hunan, China; College of Resources and Civil Engineering, Shenyang, Liaoning, China
ABSTRACT: Seismicity-related anomaly analysis or earthquake precursor cognition is a great challenge for geo-electromagnetic signals mining and remote sensing application. To mining seismic anomaly from satellite data including microwave data is of extreme importance. A spatio-temporally weighted two-step method (STW-TSM) is developed to retrieve or to mine seismicity-related microwave brightness temperature (MBT) anomaly with microwave satellite big data from Aqua AMSR-E and/or FY-3B MWRI sensors. To remove the general trend of MBT to retrieve basic MBT residuals of the shocking year, historical microwave data were given varied time-weights according to respective time intervals with the shocking year. To eliminate the regional meteorological noise so as to retrieve cleaned MBT residuals actually related with seismic activities, adjacent pixels inside the seismic preparation zone were endowed with varied space-weights according to Euclidean distances away from the epicenter With Wenchuan earthquake sequence in May, 2008 and Nepal earthquake sequence in April and May, 2015 being case studies, this paper demonstrated the practical application of STW-TSM. Results showed that 1) significant strip-shaped MBT anomalies appeared near the epicenter of Wenchuan earthquake days before the main shocking and migrated with aftershocks moving northeastward 2) the horizontal strip MBT anomalies covered exactly the epicenters and seismic concentration zone of Nepal earthquakes during shocking days 3) the MBT anomaly zones behaved highly spatial overlap with geological quaternary strata and cliff-shaped mountainous region. The mined MBT anomalies are supposed to be related with the effects of rock dielectric constant variation, which is most likely to be caused by crust stress activated positive electricity carriers from deep crustal. This research is of particular meanings for mining MBT anomaly from satellite microwave big data, and for searching geo-electromagnetic signals related with seismicity. © 2019 IEEE.
INDEX KEYWORDS: Big data; Microwave sensors; Microwaves; Photonics; Piers; Remote sensing; Satellites; Earthquake precursors; Earthquake sequences; Electromagnetic signals; Euclidean distance; Microwave brightness temperature; Mountainous regions; Remote sensing applications; Wenchuan Earthquake; Earthquakes
REFERENCES: Maeda, Takashi, Detection of microwave signals associated with rock failures in an earthquake from satellite-borne microwave radiometer data, International Geoscience and Remote Sensing Symposium (IGARSS), 3, pp. III61-III64, (2009); 
Maeda, Takashi, Detection algorithm of earthquake-related rock failures from satellite-borne microwave radiometer data, IEEE Transactions on Geoscience and Remote Sensing, 48, 4 PART 1, pp. 1768-1776, (2010); 
Maeda, Takashi, Discrimination of local and faint changes from satellite-borne microwave-radiometer data, IEEE Transactions on Geoscience and Remote Sensing, 46, 9, pp. 2684-2691, (2008); 
Remote Sens Technol Appl, (2025); 
Singh, Ramesh P., Precursory signals using satellite and ground data associated with the Wenchuan Earthquake of 12 may 2008, International Journal of Remote Sensing, 31, 13, pp. 3341-3354, (2010); 
Jing, Feng, Passive microwave response associated with two main earthquakes in Tibetan Plateau, China, Advances in Space Research, 62, 7, pp. 1675-1689, (2018); 
Zhang, Bin, Statistical analysis of microwave radiation anomaly before earthquake: A case study of Kamchatka Peninsula, Acta Seismologica Sinica, 40, 1, pp. 98-107, (2018); 
Earthq Sci, (2011); 
Liu, Shanjun, Microwave radiation anomaly of Wenchuan earthquake and its mechanism, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2500-2503, (2011); 
Liu, Shanjun, Microwave radiation anomaly of Yushu earthquake and its mechanism, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1192-1195, (2012)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Electromagnetics Academy
CONFERENCE NAME: 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019
CONFERENCE DATE: 2019-12-17 through 2019-12-20
CONFERENCE LOCATION: Xiamen
CONFERENCE CODE: 158372
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Gan, B.-R., Yang, X.-G., Zhang, W., Zhou, J.-W.
AUTHOR FULL NAMES: Gan, Binrui (57201458693); Yang, Xingguo (35742406600); Zhang, Wen (58370456700); Zhou, Jia-wen (14064231100)
57201458693; 35742406600; 58370456700; 14064231100
Temporal and Spatial Evolution of Vegetation Coverage in the Mianyuan River Basin Influenced by Strong Earthquake Disturbance
(2019) Scientific Reports, 9 (1), art. no. 16762, Cited 29 times.
DOI: 10.1038/s41598-019-53264-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075054021&doi=10.1038%2Fs41598-019-53264-5&partnerID=40&md5=a7aa6db07ab3d15ac336d3e9cb1619aa

AFFILIATIONS: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China; College of Water Resources and Hydropower, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: The 2008 Wenchuan earthquake caused significant economic losses and degradation of regional ecosystems, including the terrestrial vegetation. Since the vegetation root system can enhance the soil’s anti-erosion capacity and therefore mitigate the occurrence of slope instabilities, it is beneficial to study the spatial and temporal evolution of vegetation for a long-term assessment of co-seismic secondary disasters. The Mianyuan River Basin, an uninhabited area passing through an active fault located in the earthquake-affected region, was selected as the study area. The Normal Difference Vegetation Index (NDVI) was calculated using remote sensing images from 1994 to 2017 to analyze the process of vegetation growth, loss, fluctuation and recovery. Statistical results suggest that the area in the middle and lower reaches, near the river network, and with a slope of 30 to 40 degrees were variable regions, showing more significant vegetation destruction during the earthquake and faster repair after the seismic event. Besides, vegetation near the fault was damaged more severely after the earthquake, but the active fault did not play an essential role in the vegetation recovery period. In the Mianyuan River Basin, vegetation experienced a volatility period (5 plus or minus one year) before entering the recovery period. In 8 to 9 years after the earthquake, the surficial vegetation could recover to the state before the earthquake. © 2019, The Author(s).
INDEX KEYWORDS: article; destruction; earthquake; remote sensing; river basin; vegetation
REFERENCES: Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Kouketsu, Yui, Raman spectra of carbonaceous materials in a fault zone in the Longmenshan thrust belt, China; comparisons with those of sedimentary and metamorphic rocks, Tectonophysics, 699, pp. 129-145, (2017); 
Li, Yanchuan, GPS-derived fault coupling of the Longmenshan Fault associated with the 2008 MwWenchuan 7.9 earthquake and its tectonic implications, Remote Sensing, 10, 5, (2018); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Hillers, Gregor, Seismic velocity variations at TCDP are controlled by MJO driven precipitation pattern and high fluid discharge properties, Earth and Planetary Science Letters, 391, pp. 121-127, (2014); 
Zhang, Shuai, Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area, Geomorphology, 276, pp. 86-103, (2017); 
Lai, Jinxing, Characteristics of seismic disasters and aseismic measures of tunnels in Wenchuan earthquake, Environmental Earth Sciences, 76, 2, (2017); 
Okuwaki, Ryo, Role of geometric barriers in irregular-rupture evolution during the 2008 Wenchuan earthquake, Geophysical Journal International, 212, 3, pp. 1657-1664, (2018); 
Liu, Yang, Evaluating the vegetation destruction and recovery of Wenchuan earthquake using MODIS data, Natural Hazards, 54, 3, pp. 851-862, (2010); 
Zhang, Huaizhen, Spatial analysis of Wenchuan Earthquake-damaged vegetation in the mountainous basins and its applications, Remote Sensing, 7, 5, pp. 5785-5804, (2015)
PUBLISHER: Nature Publishing Group Houndmills Basingstoke, Hampshire RG21 6XS
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Ni, Z., Yang, Z., Li, W., Zhao, Y., He, Z.
AUTHOR FULL NAMES: Ni, Zhongyun (16239096700); Yang, Zhenyu (55716579700); Li, Weile (25936551300); Zhao, Yinbing (8059876000); He, Zhengwei (7403885268)
16239096700; 55716579700; 25936551300; 8059876000; 7403885268
Decreasing trend of geohazards induced by the 2008 Wenchuan earthquake inferred from time series NDVI data
(2019) Remote Sensing, 11 (19), art. no. 2192, Cited 22 times.
DOI: 10.3390/rs11192192
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073434962&doi=10.3390%2Frs11192192&partnerID=40&md5=ff14d24e33c2191dbffb009e21b2c5f2

AFFILIATIONS: College of Resource Environment and Tourism, Capital Normal University, Beijing, Beijing, China; College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The occurrence of aftershocks and geohazards (landslides, collapses, and debris flows) decreases with time following a major earthquake. The 12 May 2008 Wenchuan Earthquake in Sichuan, China, provides the opportunity to characterize the subsequent spatiotemporal evolution of geohazards. Following the 12 May 2008 Wenchuan Earthquake, the incidence of geohazards first increased sharply, representing a "post-earthquake effect", before starting to decrease. We compared the spatial distribution of the area affected by vegetation damage (AVD) triggered by large and medium-scale geohazards (LMG). We studied the interval prior to the 12 May 2008 Wenchuan Earthquake (2001-2007), the co-seismic period (2008), and the post-earthquake interval (2009-2016) and characterized the trend of decreasing geohazards at a macro scale. In vegetated areas, geohazards often seriously damage the vegetation, resulting in pronounced contrasts with the surrounding surface in terms of color tone, texture, morphology, and Normalized Difference Vegetation Index (NDVI) which are evident in remote sensing images (RSI). In principle, it is possible to use the strong positive correlation between AVD and geohazards to determine indirectly the resulting vegetation and to monitor its spatiotemporal evolution. In this study we attempted to characterize the process of geohazard evolution in the region affected by the 12 May 2008 Wenchuan Earthquake during 2001-2016. Our approach was to analyze the characteristics of areas with reduced vegetation coverage caused by LMG. Our principal findings are as follows: (i) Before the Wenchuan Earthquake (during 2001-2007), there was no evidence for a linear increase in the number of LMG with time; thus, the geological environment was relatively stable and the geohazards were mainly induced by rainfall events. (ii) The 12 May 2008Wenchuan Earthquake was the main cause of a surge in geohazards in 2008, with the characteristics of seismogenic faults and strong aftershocks determining the spatial distribution of geohazards. (iii) Following the 12 May 2008Wenchuan Earthquake (during 2009-2016) the incidence of geohazards exhibited an oscillating pattern of attenuation, with a decreasing trend of higher-grade seismic intensity. The intensity of geohazards was related to rainfall and seismogenic faults, and also to the number, magnitude and depth of new earthquakes following the 12 May 2008 Wenchuan Earthquake. Our results provide a new perspective on the temporal pattern of attenuation of seismic geohazards, with implications for disaster prevention and mitigation and ecological restoration in the areas affected by the 12 May 2008Wenchuan Earthquake. © 2019 by the authors.
AUTHOR KEYWORDS: 12 May 2008 Wenchuan Earthquake; Area affected by vegetation damage (AVD); Spatiotemporal evolution; Time series NDVI
INDEX KEYWORDS: Disaster prevention; Faulting; Hazards; Morphology; Rain; Remote sensing; Spatial distribution; Textures; Time series; Vegetation; 2008 wenchuan earthquakes; Disaster prevention and mitigations; Ecological restoration; Geological environment; Normalized difference vegetation index; Spatiotemporal evolution; Vegetation damage; Wenchuan Earthquake; Earthquakes
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Görüm, Tolga, Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake, Geomorphology, 184, pp. 127-138, (2013); 
Papadopoulos, Gerassimos A., Magnitude-distance relations for earthquake-induced landslides in Greece, Engineering Geology, 58, 3-4, pp. 377-386, (2000); 
Roback, Kevin, The size, distribution, and mobility of landslides caused by the 2015 Mw7.8 Gorkha earthquake, Nepal, Geomorphology, 301, pp. 121-138, (2018); 
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PUBLISHER: MDPI AG indexing@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Su, L., Liang, S., Wang, Y.
AUTHOR FULL NAMES: Su, Lijun (7202509267); Liang, Shuangqing (56991919000); Wang, Yang (57245040400)
7202509267; 56991919000; 57245040400
Experimental Study on the Stability of Rainfall-induced Gravel Landslide Post Earthquake 震后降雨型碎石土斜坡稳定性的试验研究
(2019) Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences, 51 (4), pp. 12 - 20, Cited 5 times.
DOI: 10.15961/j.jsuese.201900216
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070829865&doi=10.15961%2Fj.jsuese.201900216&partnerID=40&md5=a7aef729a649693cc0fd9e05397d6697

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; CAS Center for Excellence & Innovation in Tibetan Plateau Earth System Sciences, Shantou, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; China-Pakistan Joint Research Center on Earth Science, Slamabad, Pakistan
ABSTRACT: Earthquake changes the structure and physical-mechanical properties of the rock-soil mass in gravel soil slope, which increase the number and magnitude of rainfall landslides post earthquake. The existing researches on the effect of earthquake and rainfall on the gravel soil slope stability are mainly theoretical analysis and numerical analysis, but lack of validation. The coupling mechanism between earthquake and rainfall on landslide is extremely complex, therefore it is difficult to quantitatively analyze the effect of earthquake and rainfall on slope stability. Taking rainfall-induced gravel landslides post earthquake in Wenchuan earthquake stricken area as objects,a series of shaking table model tests, rainfall model tests and slope crest loading tests were carried out to analyze the stability of gravel landslide. The test results showed that the seismic loading induces fissures developing in slope crest and slope body, the upper slope becomes looser and the lower slope become more compressible. The rainfall seepage speed increase, the stability of rock-soil body decrease, the weight of landslide increase and the seepage force increase, thus the stability is obviously decreasing. The stability of rainfall-induced gravel landslide post earthquake is lower than rainfall or earthquake landslide. As the increasing of seismic intensity or rainfall intensity, the stability is obviously decreasing. As the seismic intensity is 0 or 0.1g and subsequent rainfall intensity is 100 mm/h, the drop rate of ultimate bearing capacity is relative large than the seismic intensity is 0.2g or 0.4g. It means that the effect of subsequent rainfall on slope stability post earthquake is more significant when the seismic intensity is relative low. Based on physical modelling experiments, the effect of earthquake and rainfall on slope stability was quantitatively analyzed, which can provide reference for the prediction and early warning of rainfall-induced gravel landslide post earthquake. © 2019, Editorial Department of Advanced Engineering Sciences. All right reserved.
AUTHOR KEYWORDS: Earthquake; Gravel soil slope; Rainfall; Slope crest loading; Stability; Ultimate bearing capacity
INDEX KEYWORDS: Bearing capacity; Earthquakes; Gravel; Rain; Seepage; Soil testing; Soils; Gravel soil slope; Physical-mechanical properties; Rainfall intensity; Rainfall-induced; Seismic intensity; Slope crest; Slope crest loading; Soil mass; Structure-mechanical properties; Ultimate bearing capacity; Landslides
REFERENCES: Xu, Jiancong, Influence of permeability of gravel soil on debris landslide stability, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 25, 11, pp. 2264-2271, (2006); 
Experimental Research on Shear Parameter of High Cut Slope Gravel Soil in Badong and Its Engineering Applications, (2011); 
J Eng Geol, (2013); 
Journal of Mountain Science, (2008); 
Bai, Yongjian, Three-dimensional system monitoring and numerical simulation on the dynamic deformation process of Jiaju landslide in Danba, Sichuan, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 30, 5, pp. 974-981, (2011); 
undefined, (2015); 
Journal of Engineering Geology, (2004); 
Hydrogeology and Engineering Geology, (2007); 
Formation Mechanism and Control Measures of the Pebbly Clay Landslide Dissertation, (2005); 
Tang, Chuan, Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China, Engineering Geology, 122, 1-2, pp. 22-33, (2011)
PUBLISHER: Sichuan University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Q., Zhang, J., Jiang, H., Geng, D.
AUTHOR FULL NAMES: Li, Qiang (56041974800); Zhang, Jingfa (14032411600); Jiang, Hongbo (55574483000); Geng, Dan (57216584464)
56041974800; 14032411600; 55574483000; 57216584464
Analysis on Ecological Environment Quality of Wenchuan County in the Past 10 Years after Wenchuan Earthquake
(2019) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 8897919, pp. 9585 - 9588, Cited 1 times.
DOI: 10.1109/IGARSS.2019.8897919
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077705428&doi=10.1109%2FIGARSS.2019.8897919&partnerID=40&md5=5de63715d483d8804205873f657e3841

AFFILIATIONS: Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: The earthquake disaster not only caused great damage to the original ecological environment system, but also even formed a new ecological system. Remote sensing technology has played an important role in post-earthquake emergency and disaster assessment with its rapid, high revisit cycle and macro-micro comprehensive observation. The effective use of multi-period remote sensing data combined with the theory of eco-environmental impact assessment can build an effective model to evaluate the dynamic changes of ecological environment. In this paper, taking Wenchuan County in Wenchuan Earthquake as a case study, we proposed a comprehensive evaluation index method and the eco-environmental quality evaluation of Wenchuan County after 10-year earthquake were constructed and the changes of eco-environmental quality were analyzed. The result of the analysis showed that ten years after the earthquake (2018), the eco-environmental quality of poor regions in the county had also exhibited an obvious improvement. The eco-environmental quality in some regions in the county had fully recovered. The results are of great significance to scientific disaster relief and reasonable restoration and reconstruction. © 2019 IEEE.
AUTHOR KEYWORDS: AHP; earthquake; ecological environment quality; remote sensing; Wenchuan
INDEX KEYWORDS: Disaster prevention; Disasters; Earthquakes; Environmental impact; Environmental impact assessments; Geology; Remote sensing; Comprehensive evaluation index; Eco-environmental quality; Eco-environmental quality evaluations; Ecological environments; Remote sensing technology; Restoration and reconstruction; Wenchuan; Wenchuan Earthquake; Quality control
REFERENCES: Proceedings of the 4th International Symposium on High Mountain Remote Sensing Cartography, (1997); 
J Rem Sens, (1998); 
Journal of Northwest University of Agriculture and Forestry Science and Technology Natural Science Edition, (2004); 
Acta Scientiae Circumstantiae, (2000); 
Study on the Evaluation Index System of Eco Environmental Quality in Provinces and Regions of China, (2000); 
Resources and Environment in the Yangtze River Basin; 
Comprehensive Evaluation of Ecological Environment in Western Jilin Based on Gis and Rs Multi Source Spatial Information, (2004)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society (GRSS)
CONFERENCE NAME: 39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
CONFERENCE DATE: 2019-07-28 through 2019-08-02
CONFERENCE LOCATION: Yokohama
CONFERENCE CODE: 154792
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

He, S., Jing, H., Tang, H., Shen, L., Tao, L., Cheng, J.
AUTHOR FULL NAMES: He, Shi (56454643600); Jing, Haitao (57205645807); Tang, Hong (36816706600); Shen, Li (36555006600); Tao, Liangliang (56421240900); Cheng, Jiehai (35728090000)
56454643600; 57205645807; 36816706600; 36555006600; 56421240900; 35728090000
Landslide Image Classification Using Semi-Supervised Learning
(2019) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 8897859, pp. 2643 - 2645, Cited 2 times.
DOI: 10.1109/IGARSS.2019.8897859
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077674962&doi=10.1109%2FIGARSS.2019.8897859&partnerID=40&md5=f317a115700d36977796ac756bef7cf4

AFFILIATIONS: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan, China; Faculty of Geographical Science, Beijing Normal University, Beijing, China; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China
ABSTRACT: Many researchers focus on the problem of accurately and rapidly classifying regional landslide hazard, whose spectrum and shape are complicated and varied in remote sensing images. A large number of training examples with labels are necessary to construct predictive models in supervised classification, which are difficult to get strong supervision information due to the high cost of data labeling process for rapid regional landslides identification. Our methods use pre- and post-event MODIS NDVI products, and post-event SPOT-5 images to classify the landslide image during the 2008 Wenchuan Earthquake based on semi-supervised learning model, which means that only a subset of training data are given with labels to train a good learner. To examine the effectiveness of the proposed method, the results are compared with state-of-the-art support vector machine (SVM). Experimental results demonstrate that the proposed method is an accurate and rapid way to classify landslide images. © 2019 IEEE.
AUTHOR KEYWORDS: classification; landslide; multi-sensor data; remote sensing; semi-supervised learning
INDEX KEYWORDS: Classification (of information); Earthquakes; Geology; Landslides; Predictive analytics; Remote sensing; Semi-supervised learning; Support vector machines; 2008 wenchuan earthquakes; Landslide hazard; Multi-sensor data; Predictive models; Remote sensing images; State of the art; Supervised classification; Training example; Image classification
REFERENCES: Yang, Wentao, Using MODIS NDVI time series to identify geographic patterns of landslides in vegetated regions, IEEE Geoscience and Remote Sensing Letters, 10, 4, pp. 707-710, (2013); 
He, Shi, Landslide detection with two satellite images of different spatial resolutions in a probabilistic topic model, International Geoscience and Remote Sensing Symposium (IGARSS), 2015-November, pp. 409-412, (2015); 
Zhou, Zhihua, A brief introduction to weakly supervised learning, National Science Review, 5, 1, pp. 44-53, (2018); 
Niu, Gang, Squared-loss mutual information regularization: A Novel information-theoretic approach to semi-supervised learning, PART 2, pp. 1047-1055, (2013); 
Suzuki, Taiji, Mutual information estimation reveals global associations between stimuli and biological processes, BMC Bioinformatics, 10, SUPPL. 1, (2009)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society (GRSS)
CONFERENCE NAME: 39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
CONFERENCE DATE: 2019-07-28 through 2019-08-02
CONFERENCE LOCATION: Yokohama
CONFERENCE CODE: 154792
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Qu, T., Xu, Q., Liu, C., Li, Z., Chen, B., Dai, K.
AUTHOR FULL NAMES: Qu, Tengteng (57191202664); Xu, Qiang (56506033600); Liu, Chun (55680726300); Li, Zhenhong (57898397300); Chen, Bo (57202312773); Dai, Keren (56005107100)
57191202664; 56506033600; 55680726300; 57898397300; 57202312773; 56005107100
Radar remote sensing applications in landslide monitoring with multi-platform insar observations: A case study from China
(2019) International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 42 (2/W13), pp. 1939 - 1943, Cited 4 times.
DOI: 10.5194/isprs-archives-XLII-2-W13-1939-2019
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067461076&doi=10.5194%2Fisprs-archives-XLII-2-W13-1939-2019&partnerID=40&md5=01ab1ef1e982a7dcdab9929b2e318355

AFFILIATIONS: College of Engineering, Peking University, Beijing, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; College of Surveying and Geo-Informatics, Tongji University, Shanghai, China; School of Engineering, Newcastle University, Newcastle, Tyne and Wear, United Kingdom
ABSTRACT: In China, landslides are widely distributed in the mountainous areas of western regions. Especially after the Wenchuan Earthquake in 2008, a large number of landslides were triggered. This work focuses on the deformation monitoring of Xishancun Landslide based on multi-platform spaceborne radar remote sensing techniques. The spatio-temporal deformation characteristics of landslide could be retrieved from time series InSAR processing with joint use of Sentinel-1 and TerraSAR-X datasets. Eventually, the deformation and evolution histories are cultivated thoroughly to realize an effective and comprehensive monitoring and research of Xishancun Landslide. This work concludes that spaceborne radar remote sensing applications could demonstrate great potentials to identify the spatio-temporal characteristics and investigate the kinematics for hazardous landslides, especially combined with in situ measurements and other remote sensing observations. © Authors 2019.
AUTHOR KEYWORDS: InSAR; Landslide Monitoring; Multi-platform; Radar Remote Sensing; Sentinel-1; TerraSAR-X
INDEX KEYWORDS: Deformation; Earthquakes; Landslides; Radar measurement; Satellites; Space applications; Space-based radar; Synthetic aperture radar; InSAR; Landslide monitoring; Multi-platform; Radar remote sensing; Sentinel-1; TerraSAR-X; Remote sensing
REFERENCES: Proc of Workshop on World Landslide Forum, (2017); 
Czikhardt, Richard, Ground stability monitoring of undermined and landslide prone areas by means of sentinel-1 multi-temporal InSAR, case study from Slovakia, Geosciences (Switzerland), 7, 3, (2017); 
Dai, Keren, Monitoring activity at the Daguangbao mega-landslide (China) using Sentinel-1 TOPS time series interferometry, Remote Sensing of Environment, 186, pp. 501-513, (2016); 
Fiaschi, Simone, Testing the potential of Sentinel-1A TOPS interferometry for the detection and monitoring of landslides at local scale (Veneto Region, Italy), Environmental Earth Sciences, 76, 14, (2017); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Intrieri, Emanuele, The Maoxian landslide as seen from space: detecting precursors of failure with Sentinel-1 data, Landslides, 15, 1, pp. 123-133, (2018); 
Kyriou, Aggeliki S., Assessing the suitability of Sentinel-1 data for landslide mapping, European Journal of Remote Sensing, 51, 1, pp. 402-411, (2018); 
Li, Zhenhong, Integration of InSAR time-series analysis and water-vapor correction for emapping postseismic motion after the 2003 Bam (Iran) earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 9, pp. 3220-3230, (2009); 
Liu, Chun, Susceptibility evaluation and mapping of China's landslides based on multi-source data, Natural Hazards, 69, 3, pp. 1477-1495, (2013); 
International Journal of Remote Sensing, (2018)
PUBLISHER: International Society for Photogrammetry and Remote Sensing
CONFERENCE NAME: 4th ISPRS Geospatial Week 2019
CONFERENCE DATE: 2019-06-10 through 2019-06-14
CONFERENCE LOCATION: Enschede
CONFERENCE CODE: 148406
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Yang, Z., Cai, H., Shao, W., Huang, D., Uchimura, T., Lei, X., Tian, H., Qiao, J.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Cai, Huan (57201945431); Shao, Wei (57653099800); Huang, Dong (36664555400); Uchimura, Taro (7007007474); Lei, XiaoQin (56368562800); Tian, Hongling (14520009600); Qiao, Jianping (24485090400)
24485723300; 57201945431; 57653099800; 36664555400; 7007007474; 56368562800; 14520009600; 24485090400
Clarifying the hydrological mechanisms and thresholds for rainfall-induced landslide: in situ monitoring of big data to unsaturated slope stability analysis
(2019) Bulletin of Engineering Geology and the Environment, 78 (4), pp. 2139 - 2150, Cited 71 times.
DOI: 10.1007/s10064-018-1295-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046549331&doi=10.1007%2Fs10064-018-1295-5&partnerID=40&md5=c335e388be8c53af49029b658554c2ff

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; School of Hydrology and Water Resources, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China; Department of Civil & Environmental Engineering, Saitama University, Saitama, Saitama, Japan
ABSTRACT: The development of early warning systems for landslide hazards has long been a challenge because the accuracy of such systems is limited by both the complicated underlying mechanisms of landslides and the lack of in situ data. In this study, we implemented a multivariate threshold criterion that integrates in situ monitoring data and data from unsaturated hydro-mechanical analyses as an early warning system for rainfall-induced landslides in the Wenchuan earthquake region of China. The results indicate that rainfall intensity is closely correlated with the probability of landslide occurrence. Variations in matric suction and suction stress were obtained from in situ measurements and used to quantify the soil water retention curve, which presented clear hysteresis characteristics. The impacts of rainfall infiltration on slope failure in post-earthquake landslide areas under transient rainfall conditions were quantified by hydro-mechanical modelling theories. Variations in the suction stress of unsaturated soil were used to calculate the safety factor. The influence of hydrological hysteresis processes on the slope failure mechanism was analysed. Multivariate threshold criteria that include the intensity–probability (I-P) threshold, soil moisture and matric suction based on in situ big data and unsaturated slope stability analysis benchmarks are proposed for use in an early warning system for rainfall-induced landslides. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Big data; Early warning; Hydrological mechanism; Multivariate thresholds; Rainfall-induced landslide; Unsaturated condition
INDEX KEYWORDS: Alarm systems; Earthquakes; Failure (mechanical); Hysteresis; Landslides; Monitoring; Rain; Safety factor; Slope protection; Soil moisture; Soil surveys; Stability criteria; Early warning; Early Warning System; Hysteresis characteristics; Multivariate threshold; Rainfall induced landslides; Rainfall infiltration; Soil water retention curves; Unsaturated condition; Big data; accuracy assessment; early warning system; hydrological regime; in situ measurement; matric potential; multivariate analysis; precipitation intensity; rainfall; slope failure; slope stability; stability analysis; threshold; China
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Baum, Rex L., Estimating the timing and location of shallow rainfall-induced landslides using a model for transient, unsaturated infiltration, Journal of Geophysical Research: Earth Surface, 115, 3, (2010); 
Berti, Matteo, Field evidence of pore pressure diffusion in clayey soils prone to landsliding, Journal of Geophysical Research: Earth Surface, 115, 3, (2010); 
Hydraulic Properties of Porous Media, (1964); 
Cafaro, Francesco, Metastable states of silty clays during drying, Canadian Geotechnical Journal, 39, 4, pp. 992-999, (2002); 
Cafaro, Francesco, Influence of the mechanical properties of consolidated clays on their water retention curve, Rivista Italiana di Geotecnica, 49, 2, pp. 11-27, (2015); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Chae, Byung-gon, Landslide prediction, monitoring and early warning: a concise review of state-of-the-art, Geosciences Journal, 21, 6, pp. 1033-1070, (2017); 
Fan, Yongbo, Real-time monitoring instrument designed for the deformation and sliding period of colluvial landslides, Bulletin of Engineering Geology and the Environment, 76, 3, pp. 829-838, (2017); 
Godt, Jonathan W., Landsliding in partially saturated materials, Geophysical Research Letters, 36, 2, (2009)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Z., Cai, H., Lei, X., Wang, L., Ding, P.-P., Qiao, J.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Cai, Huan (57201945431); Lei, XiaoQin (56368562800); Wang, Liyong (57213183655); Ding, Pengpeng (57201094429); Qiao, Jianping (24485090400)
24485723300; 57201945431; 56368562800; 57213183655; 57201094429; 24485090400
Experiment on hydro-mechanical behavior of unsaturated gravelly soil slope 非饱和地震滑坡堆积体降雨破坏水-力耦合行为试验
(2019) Yantu Lixue/Rock and Soil Mechanics, 40 (5), pp. 1869 - 1880, Cited 21 times.
DOI: 10.16285/j.rsm.2018.0045
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070275772&doi=10.16285%2Fj.rsm.2018.0045&partnerID=40&md5=2147ca8ded0c347abedac0b70b7d8d1f

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: A profound understanding of hydro-mechanical coupling process in rainfall-induced landslides and its formation mechanism are prerequisites for the accurate early warning. In this study, a typical landslide in Wenchuan earthquake region is selected for a series of full-scale artificial rainfall tests, to simulate failure progress on gravelly soil slope of landslide deposit. Two classical soil-water characteristic curve (SWCC) models, Brooks-Corey (BC) and Van Genuchten (VG) model, are used to establish the SWCC during rainfall infiltration. Then, the stress state and stability of slope are analyzed by one-dimensional variably saturated infinite slope model. The results reveal that the slope failure is the consequence of dual-permeability interaction between the preferential flow and the matrix flow. The VG model is capable of fitting SWCC of wide-graded gravelly soil during wetting process for preferential flow. Comparison between stability analysis and observation indicates that changes on volumetric water content, matric suction and surface inclination are consistent with calculated suction stress and safety factor. Finally, the seepage erosion in unsaturated slope is proved by the tests, and the migration of fine particles is statistically analyzed. Based on the physical model test, this study reveals the coupling process of soil-water characteristic curves and slope failure with the influence of preferential flow under rainfall conditions, which can provide reference and basis for the prediction and early warning of unsaturated slope instability. © 2019, Science Press. All right reserved.
AUTHOR KEYWORDS: Full-scale model test; Gravelly soil; Hydro-mechanical coupling; Shallow landslide; Unsaturated
INDEX KEYWORDS: Earthquakes; Groundwater flow; Rain; Safety factor; Seepage; Soil moisture; Soil structure interactions; Full-scale model tests; Gravelly soils; Hydromechanical coupling; Shallow landslide; Unsaturated; Landslides
REFERENCES: Journal of Engineering Geology, (2011); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Koi, Takashi, Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan, Geomorphology, 101, 4, pp. 692-702, (2008); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Saba, Sumbal Bahar, Spatiotemporal landslide detection for the 2005 Kashmir earthquake region, Geomorphology, 124, 1-2, pp. 17-25, (2010); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Tang, Chuan, Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China, Engineering Geology, 122, 1-2, pp. 22-33, (2011); 
Yang, Zongji, Unsaturated hydro-mechanical behaviour of rainfall-induced mass remobilization in post-earthquake landslides, Engineering Geology, 222, pp. 102-110, (2017); 
He, Keqiang, Features of load-unload response ratio and its significance in predication of colluvial landslide induced by rainfall, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 23, 16, pp. 2665-2670, (2004); 
USDA Bur Soils Bull, (1907)
PUBLISHER: Academia Sinica kjwang@public.wh.hb.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Zhang, J.
AUTHOR FULL NAMES: Wang, Zhile (57207120196); Zhang, Jihai (7601357424)
57207120196; 7601357424
Agent-based evaluation of humanitarian relief goods supply capability
(2019) International Journal of Disaster Risk Reduction, 36, art. no. 101105, Cited 43 times.
DOI: 10.1016/j.ijdrr.2019.101105
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062271321&doi=10.1016%2Fj.ijdrr.2019.101105&partnerID=40&md5=89cc08249746bbe81e52878e38f15274

AFFILIATIONS: Department of Management Science and Engineering, Beijing Institute of Technology, Beijing, China
ABSTRACT: Natural disasters cause great damage to lives, assets, and the economy. In disaster areas, relief goods are essential sources of life supplies, particularly in the post-disaster context. This study develops a prototype of a spatially explicit agent-based model and uses it to evaluate the deviation of end products between supply and demand for humanitarian relief goods in the areas affected by disaster within a specified time frame. The case modeled here is the supply of refined oil to areas affected by the 2008 Wenchuan earthquake in China. The approach focuses on supply and uses socio-spatial datasets, as well as transport and refined oil supply data. Based on the supply of refined oil to the disaster areas after the disaster, this study conducted a quantitative analysis using agent-based simulation of the humanitarian relief supply chain. The study finds that the approach is viable, despite the limitations of publicly available datasets on relief goods in China. The study asserts that this approach has potential in assisting policymakers seeking to identify system vulnerabilities and increase resilience in disaster-prone and disaster areas. © 2019
AUTHOR KEYWORDS: Agent-based simulation; GIS; Humanitarian relief; Quantitative evaluation
REFERENCES: Tang, Aiping, An intelligent simulation system for earthquake disaster assessment, Computers and Geosciences, 35, 5, pp. 871-879, (2009); 
Hashemi, Mahdi, GIS: Agent-based modeling and evaluation of an earthquake-stricken area with a case study in Tehran, Iran, Natural Hazards, 69, 3, pp. 1895-1917, (2013); 
Cao, Cejun, A novel multi-objective programming model of relief distribution for sustainable disaster supply chain in large-scale natural disasters, Journal of Cleaner Production, 174, pp. 1422-1435, (2018); 
Liberatore, Federico, A hierarchical compromise model for the joint optimization of recovery operations and distribution of emergency goods in Humanitarian Logistics, Computers and Operations Research, 42, pp. 3-13, (2014); 
Ransikarbum, Kasin, Goal programming-based post-disaster decision making for integrated relief distribution and early-stage network restoration, International Journal of Production Economics, 182, pp. 324-341, (2016); 
Yadav, Devendra K., Analysis of critical success factors of humanitarian supply chain: An application of Interpretive Structural Modeling, International Journal of Disaster Risk Reduction, 12, pp. 213-225, (2015); 
Long, Qingqi, An integrated framework for agent based inventory-production-transportation modeling and distributed simulation of supply chains, Information Sciences, 277, pp. 567-581, (2014); 
Krejci, Caroline C., Hybrid simulation modeling for humanitarian relief chain coordination, Journal of Humanitarian Logistics and Supply Chain Management, 5, 3, pp. 325-347, (2015); 
Professional Geographer, (2003); 
Perez, Liliana, Modeling mountain pine beetle infestation with an agent-based approach at two spatial scales, Environmental Modelling and Software, 25, 2, pp. 223-236, (2010)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhai, Y., Fu, X., Chen, G., Qin, J.
AUTHOR FULL NAMES: Zhai, Yongmei (42361750700); Fu, Xuxia (57205767227); Chen, Gang (57226068959); Qin, Jianjun (54959650200)
42361750700; 57205767227; 57226068959; 54959650200
Prior Seismic Performance Assessment for Building Community with High-Resolution Remote Sensing Images
(2019) IOP Conference Series: Earth and Environmental Science, 234 (1), art. no. 012044, Cited 0 times.
DOI: 10.1088/1755-1315/234/1/012044
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063367397&doi=10.1088%2F1755-1315%2F234%2F1%2F012044&partnerID=40&md5=dc451df5c8d0d18eb89bce6d050b3dcd

AFFILIATIONS: Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai, China; College of Civil Engineering, Tongji University, Shanghai, China; Zhengrong (Shanghai) Real Estate Development Co., Ltd, Shanghai, China
ABSTRACT: The seismic performance assessment of building community prior to the occurrence of earthquakes is important to the disaster prevention and relief planning. However, one big challenge is the available information for assessment is generally limited, which makes the reliability of the assessment low. In this paper, a new approach to extraction and analysis of high-resolution remote sensing images is proposed to facilitate its prior seismic performance assessment. The proposed approach is finally verified by the case study of Dujiangyan urban area in Wenchuan earthquake. In the case study, the performance of the buildings during the earthquake were extracted from the aftershock remote sensing images by the application of the image change detection technology, and it is compared with the results from the prior assessment with the proposed approach. The comparison shows that the consistency is well between the prior assessment and the aftershock investigation. © Published under licence by IOP Publishing Ltd.
INDEX KEYWORDS: Disaster prevention; Earthquake engineering; Image processing; Remote sensing; Seismic waves; Urban planning; Building community; High resolution remote sensing images; Image change detection; New approaches; Remote sensing images; Seismic performance assessment; Urban areas; Wenchuan Earthquake; Earthquakes
REFERENCES: World Earthquake Engineering, (2008); 
A method for earthquake damage prediction of building group based on existing earthquake damage matrix, 25, 6, pp. 102-108; 
Zhang, Guixin, A method for earthquake damage prediction of building groups based on multiple factors, World Earthquake Engineering, 26, 1, pp. 26-30, (2010); 
Sun, Baitao, The Wenchuan earthquake creation of a rich database of building performance, Science China Technological Sciences, 53, 10, pp. 2668-2680, (2010); 
Jiang, Shuzhen, Seismic damage prediction method of multistory brick buildings, Journal of Natural Disasters, 13, 6, pp. 117-121, (2004); 
Seismic System of Earthquake Damage Prediction of Buildings Based on GIS, (2015); 
Han, Bo, Seismic damage simulation of urban buildings based on high performance GPU computing, Journal of Natural Disasters, 21, 5, pp. 16-22, (2012); 
Journal of Geophysics 2015, (2013); 
Envi Remote Sensing Image Processing Method, (2010); 
Seismic Engineering and Engineering Vibration, (2008)
PUBLISHER: Institute of Physics Publishing helen.craven@iop.org
CONFERENCE NAME: 6th Annual 2018 International Conference on Geo-Spatial Knowledge and Intelligence, GSKI 2018
CONFERENCE DATE: 2018-12-16
CONFERENCE LOCATION: Wuhan, Hubei
CONFERENCE CODE: 146117
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhu, C., Peng, W., Zhang, L., Luo, Y., Dong, Y., Wang, M.
AUTHOR FULL NAMES: Zhu, Cong (57200179155); Peng, Wenfu (36163324300); Zhang, Lifang (57208191593); Luo, Yao (57200181546); Dong, Yongbo (57200185211); Wang, Meifang (57205376778)
57200179155; 36163324300; 57208191593; 57200181546; 57200185211; 57205376778
Study of temporal and spatial variation and driving force of fractional vegetation cover in upper reaches of Minjiang River from 2006 to 2016
(2019) Shengtai Xuebao, 39 (5), pp. 1583 - 1594, Cited 36 times.
DOI: 10.5846/stxb201805040993
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064075430&doi=10.5846%2Fstxb201805040993&partnerID=40&md5=2fcebc6c024d419d25bec9c29ed73183

AFFILIATIONS: Institute of Geography and Resources Science, Sichuan Normal University, Chengdu, Sichuan, China; Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Sichuan Normal University, Chengdu, Sichuan, China; School of Geography and Environmental Science, Guizhou Normal University, Guiyang, Guizhou, China
ABSTRACT: Based on moderate resolution imaging spectroradiometer (MODIS) normalized difference vegetation index (NDVI) remote sensing data, the fractional vegetation cover in the upper reaches of Minjiang River was estimated using a pixel dichotomy model. Furthermore, the temporal and spatial variation pattern and stability of the fractional vegetation cover in the upper reaches of Minjiang River from 2006 to 2016 were studied using univariate linear regression and stability analyses. The damage degree of the vegetation in the upper reaches of Minjiang River and the vegetation restoration after the earthquake are discussed in sections. The influencing factors of fractional vegetation cover in the upper reaches of Minjiang River were detected using the Geographic detector model. The driving force of vegetation cover change in the upper reaches of Minjiang River was analyzed. The results showed the following. (1) The fractional vegetation cover in the upper reaches of Minjiang River from 2006 to 2016 was good, and the overall fractional vegetation cover was stable. The annual average fractional vegetation cover was 0.79, and the area with fractional vegetation cover > 0.8 accounted for 69% of the total area of the upper reaches of the Minjiang River. (2) The " 5. 12 Wenchuan earthquake" in 2008 seriously damaged the vegetation in the upper reaches of Minjiang River. The degraded area of fractional vegetation cover was 14013.41 km2, which accounted for 57% of the total area of the upper reaches of the Minjiang River.The vegetation restoration condition in the upper reaches of Minjiang River from 2008 to 2016 was good.The area of fractional vegetation cover improvement was 17390.69 km2, which accounted for 71% of the total area of the upper reaches of the Minjiang River. The fractional vegetation cover in the upper reaches of Minjiang River exceeded the pre-earthquake level. (3) The fractional vegetation cover in the upper reaches of Minjiang River was mainly affected by four factors: altitude, temperature, agrotype, and precipitation. Its explanatory power was > 40%, the interpretation of the Geomorphic type and vegetation types was between 20% and 40%, and the interpretation of slope and aspect was < 1%. © 2019 Science Press. All Rights Reserved.
AUTHOR KEYWORDS: Fractional vegetation cover; Geographic detector; Pixel dichotomy model; Space-time variation; Upper reaches of Minjiang River
INDEX KEYWORDS: earthquake; instrumentation; linear programing; NDVI; pixel; remote sensing; restoration ecology; satellite data; spatiotemporal analysis; vegetation cover
REFERENCES: Physics Procedia, (2012); 
Pabi, Opoku, Understanding land-use/cover change process for land and environmental resources use management policy in Ghana, GeoJournal, 68, 4, pp. 369-383, (2007); 
Gong, Zhaoning, Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001–2013, Journal of Geographical Sciences, 27, 2, pp. 143-160, (2017); 
Zhang, Yanjun, Spatio-temporal variation of fractional vegetation coverage and response to climatic factors in Three Gorges Reservoir area from 2010 to 2014, IOP Conference Series: Earth and Environmental Science, 94, 1, (2017); 
Lagomasino, David, Spatial and temporal variability in spectral-based surface energy evapotranspiration measured from Landsat 5TM across two mangrove ecotones, Agricultural and Forest Meteorology, 213, pp. 304-316, (2015); 
Camacho, Fernando, Vegetation cover seasonal changes assessment from TM imagery in a semi-arid landscape, International Journal of Remote Sensing, 25, 17, pp. 3451-3476, (2004); 
Jiménez-Muñoz, Juan Carlos, Comparison between fractional vegetation cover retrievals from vegetation indices and spectral mixture analysis: Case study of PROBA/CHRIS data over an agricultural area, Sensors, 9, 2, pp. 768-793, (2009); 
Journal of Remote Sensing, (2010); 
Stow, Douglas Alan, Greenness trends of Arctic tundra vegetation in the 1990s: Comparison of two NDVI data sets from NOAA AVHRR systems, International Journal of Remote Sensing, 28, 21, pp. 4807-4822, (2007)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Y., He, Z., Ma, B., Wang, J., Zhang, H., Wang, J.
AUTHOR FULL NAMES: Zhang, Yang (59828407100); He, Zhongtai (36854425000); Ma, Baoqi (14068806200); Wang, Jinyan (57189381926); Zhang, Hao (57194063364); Wang, Jinpeng (57200027572)
59828407100; 36854425000; 14068806200; 57189381926; 57194063364; 57200027572
Geological and geomorphic evidence for activity of the Mengzi fault along the southeastern margin of the Tibetan Plateau
(2019) Journal of Asian Earth Sciences, 171, pp. 233 - 245, Cited 4 times.
DOI: 10.1016/j.jseaes.2018.09.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053724296&doi=10.1016%2Fj.jseaes.2018.09.009&partnerID=40&md5=8ad3ce28d0cad8b7d004beab968c08b1

AFFILIATIONS: Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; Institute of Earthquake Engineering of Jiangsu Province, Nanjing, Jiangsu, China
ABSTRACT: Few studies have been conducted on the activity of the Mengzi fault system, which is located to the southeast of the Sichuan-Yunnan block. The Mengzi fault is distributed along the eastern margin of the Mengzi basin. However, little is known about the location, length, and activity of the fault or the occurrence of paleo-earthquakes during the late Quaternary. This paper studies the geometric distribution and activity of the fault via remote sensing imagery interpretation, fault outcrops in the area, faulted landforms and chronological analyses. The results show that the Mengzi fault extends from Nandong (Kaiyuan basin) in the north through the eastern margin of the Mengzi basin to Pingbian in the southeast, eventually intersecting with the Honghe fault. The Mengzi fault is approximately 250 km long and is characterized as a reverse strike-slip fault. We survey and calculate the offset gullies and terraces dislocated by the fault; combined with sample dating, we calculate the horizontal slip rate of the fault since 30 ka BP to be 0.91–1.56 mm/a. Three paleo-events since 30–40 ka BP are observed with a 10-ka major earthquake recurrence period. We analyze the relationships among the Mengzi fault, southern Xiaojiang fault, and Qujiang-Jianshui fault and note a slip rate loss of ≥8 mm/a from the southern Xiaojiang fault that was absorbed by reverse dextral strike-slip faulting and lateral shortening of the Qujiang-Jianshui fault and the Mengzi fault. The Mengzi fault plays an important role in the adjustment of the large slip rate reduction along the southern Xiaojiang fault. Moreover, the Mengzi fault has a similar tectonic position to the seismogenic faults of the 2008 Wenchuan earthquake, 2013 Lushan earthquake and 2014 Ludian earthquake, and the Mengzi fault and southern Xiaojiang fault both accumulate the energy generated by the southeastward movement of the Sichuan-Yunnan block. Studies on the Mengzi fault are helpful for renewing our understanding of the tectonic patterns of the southeastern Sichuan-Yunnan block and delimiting the boundary of the southeastern block margin. Furthermore, because the cities of Mengzi and Kaiyuan are located along the Mengzi fault, this study has practical significance for earthquake disaster mitigation. © 2018 Elsevier Ltd
AUTHOR KEYWORDS: Geological; Geomorphic; Mengzi basin; Mengzi fault; Southeast of the Sichuan-Yunnan block
INDEX KEYWORDS: disaster management; fault zone; geomorphological response; paleoseismicity; Quaternary; reverse fault; seismic hazard; strike-slip fault; structural control; structural geology; tectonic setting; China; Qinghai-Xizang Plateau; Ludia
REFERENCES: Allen, Clarence R., Field study of a highly active fault zone: the Xianshuihe Fault of southwestern China, Bulletin of the Geological Society of America, 103, 9, pp. 1178-1199, (1991); 
undefined, (1951); 
Armijo, Rolando, Late Cenozoic right-lateral strike-slip faulting in southern Tibet, Journal of Geophysical Research, 94, B3, pp. 2787-2838, (1989); 
Chang, Zufeng, Late-quaternary activity of the Zhaotong-Ludian fault zone and its tectonic implication, Dizhen Dizhi, 36, 4, pp. 1260-1279, (2014); 
Chen, Guihua, Kinematical transformation and slip partitioning of northern to eastern active boundary belt of Sichuan-Yunnan block, Dizhen Dizhi, 30, 1, pp. 58-85, (2008); 
Acta Seismologica Sinica, (1981); 
Cheng Shaoping, Offset gullies and recurrence time of M8.5 strong earthquakes along the fault zone of northern piedment of Nanhua Mountain, Haiyuan, Ningxia., Dizhen Dizhi, 6, 4, pp. 25-37, (1984); 
Cheng, Wanzheng, Focal mechanisms, displacement rate and mode of motion of the Sichuan-Yunnan block, Dizhen Dizhi, 25, 1, pp. 71-87, (2003); 
Catalogue of Chinese Historical Strong Earthquakes, (1995); 
undefined, (1999)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Domènech, G., Fan, X., Scaringi, G., van Asch, T.W.J., Xu, Q., Huang, R., Hales, T.C.
AUTHOR FULL NAMES: Domènech, Guillem (57200700467); Fan, Xuanmei (12752112800); Scaringi, Gianvito (56335047900); van Asch, Theodore W.J. (6701661708); Xu, Qiang (56506033600); Huang, Runqiu (55835407700); Hales, Tristram Charles (9741921500)
57200700467; 12752112800; 56335047900; 6701661708; 56506033600; 55835407700; 9741921500
Modelling the role of material depletion, grain coarsening and revegetation in debris flow occurrences after the 2008 Wenchuan earthquake
(2019) Engineering Geology, 250, pp. 34 - 44, Cited 99 times.
DOI: 10.1016/j.enggeo.2019.01.010
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060340204&doi=10.1016%2Fj.enggeo.2019.01.010&partnerID=40&md5=4fcdd8fee0ee1cf9979df20f63a89320

AFFILIATIONS: Engineering Geology and Applied Geophysics, Charles University, Prague, Czech Republic; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Faculty of Geosciences, Universiteit Utrecht, Utrecht, Netherlands; School of Earth and Ocean Sciences, Cardiff University, Cardiff, South Glamorgan, Wales, United Kingdom
ABSTRACT: A large amount of debris was generated by the co-seismic mass wasting associated with the 2008 M <inf>w</inf> 7.9 Wenchuan earthquake. The abundance of this loose material along the slopes caused more frequent debris flows, triggered by less intense and/or shorter rainfalls. However, both the triggering rainfall and the debris flow frequency seem to have normalised progressively during the past decade. Although changes of rainfall thresholds for post-seismic debris flows were recorded after several major earthquakes, the factors controlling these changes remain poorly constrained. With the aid of a virtual experiment, we investigate the roles of material depletion, grain coarsening and revegetation of the co-seismic debris on the propagation and deposition of debris flows initiated by runoff, as well as their influence on the triggering rainfall thresholds. We employ a Geographic Information System (GIS)-based simulation of debris flow initiation by runoff erosion, which we first calibrate on the 14th August 2010 Hongchun gully event that occurred near the Wenchuan earthquake epicentre. We obtain, by investigating each of the aforementioned processes, changing critical rainfall intensity-duration thresholds for given debris flow runout distances. Grain coarsening appears to play a major role, which is consistent with published laboratory experiments, while material depletion and revegetation do not seem able to account alone for the actual quick decay of debris flow frequency. While the virtual experiment has proven useful in identifying the first-order controls on this decay, model improvements and verification over multiple catchments are needed to make the results useful in hazard assessments. © 2019 Elsevier B.V.
AUTHOR KEYWORDS: Debris flow evolution; Grain coarsening; Material depletion; Rainfall thresholds; Revegetation; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Coarsening; Debris; Rain; Revegetation; Runoff; Soil conservation; Virtual reality; 2008 wenchuan earthquakes; Critical rainfall intensities; Debris flow occurrences; Debris flows; Grain coarsening; Laboratory experiments; Rainfall thresholds; Wenchuan Earthquake; Earthquakes; debris flow; earthquake epicenter; mass wasting; modeling; rainfall; revegetation; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: Abancó, Clàudia, Estimate of the debris-flow entrainment using field and topographical data, Natural Hazards, 71, 1, pp. 363-383, (2014); 
Abancó, Clàudia, Critical rainfall conditions for the initiation of torrential flows. Results from the Rebaixader catchment (Central Pyrenees), Journal of Hydrology, 541, pp. 218-229, (2016); 
Chang, Dongsheng, Field testing of erodibility of two landslide dams triggered by the 12 May Wenchuan earthquake, Landslides, 8, 3, pp. 321-332, (2011); 
Chen, Hongxin, EDDA 1.0: Integrated simulation of debris flow erosion, deposition and property changes, Geoscientific Model Development, 8, 3, pp. 829-844, (2015); 
Chen, Hongey, Recent rainfall-induced landslides and debris flow in northern Taiwan, Geomorphology, 77, 1-2, pp. 112-125, (2006); 
Chen, Hongxin, Evolution of debris flow properties and physical interactions in debris-flow mixtures in the Wenchuan earthquake zone, Engineering Geology, 182, PB, pp. 136-147, (2014); 
Cuomo, Sabatino, Rainfall-induced infiltration, runoff and failure in steep unsaturated shallow soil deposits, Engineering Geology, 162, pp. 118-127, (2013); 
Cuomo, Sabatino, Physically based modelling of soil erosion induced by rainfall in small mountain basins, Geomorphology, 243, pp. 106-115, (2015); 
Cuomo, Sabatino, Modelling the space–time evolution of bed entrainment for flow-like landslides, Engineering Geology, 212, pp. 10-20, (2016); 
de Roo, Ad P.J., The LISEM project: an introduction, Hydrological Processes, 10, 8, pp. 1021-1025, (1996)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Cui, S., Pei, X., Huang, R., Zhang, W., Liang, Y.
AUTHOR FULL NAMES: Cui, Shenghua (56660242900); Pei, Xiangjun (14058672500); Huang, Runqiu (55835407700); Zhang, Weifeng (55706462700); Liang, Yufei (57208153398)
56660242900; 14058672500; 55835407700; 55706462700; 57208153398
Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide 大光包滑坡不连续地质特征及其工程地质意义
(2019) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 54 (1), pp. 61 - 72, Cited 8 times.
DOI: 10.3969/j.issn.0258-2724.20160480
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063937506&doi=10.3969%2Fj.issn.0258-2724.20160480&partnerID=40&md5=63deb46ac02f445b775fc9bc6fb7269d

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The Daguangbao (DGB) landslide is the largest landslide triggered by the 2008 Wenchuan earthquake and considered as one of the largest of these events in the world. In this paper, the geological cause of the DGB landslide was analysed on the basis of rich photographs, remote sensing images, and orientation data. The discontinuity features of the landslide scarp, slip zone, and deposition were investigated firstly, and then the formations of these discontinuities were studied. The effects of strong seismic shaking, geological discontinuities, and ground water on the DGB landslide were discussed. The results showed that the initiation and deposition of the DGB landslide were dominated by geological discontinuities such as local faults, bedding faults, and joint sets, which were developed during the formation of an anticline. Strong ground shaking of the Wenchuan earthquake induced the failure of these geological discontinuities, and ground water might have finally initiated the DGB landslide during the earthquake-induced discontinuity connectivity. © 2019, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.
AUTHOR KEYWORDS: Geological structure; Ground water; Rock structure; Sliding zone; Wenchuan earthquake
INDEX KEYWORDS: Deposition; Earthquake effects; Groundwater; Landslides; Remote sensing; 2008 wenchuan earthquakes; Daguangbao landslides; Geological significance; Geological structures; Remote sensing images; Rock structures; Sliding zone; Wenchuan Earthquake; Faulting
REFERENCES: undefined; 
Liu, Jingshuang Jinglan, The Ms 8. 0 Wenchuan Earthquake co-seismic rupture and its tectonic implications - An out-of-sequence thrusting event with slip partitioned on multiple faults, Acta Geologica Sinica (English Edition), 82, 12, pp. 1707-1722, (2008); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Xu, Qiang, Spatial distribution of large-scale landslides induced by the 5.12 Wenchuan Earthquake, Journal of Mountain Science, 8, 2, pp. 246-260, (2011); 
undefined; 
Huang, Runqiu, Cataclastic characteristics and formation mechanism of rock mass in sliding zone of Daguangbao landslide, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 35, 1, pp. 1-15, (2016); 
Journal of Engineering Geology, (2025); 
Journal of Engineering Geology, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008)
PUBLISHER: Science Press yanmh@neigae.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cheng, H.
AUTHOR FULL NAMES: Cheng, Haiqin (55323368700)
55323368700
Spatiotemporal pattern of wenchuan earthquake landslides in longmenshan area from time series radar interferometry 时序雷达干涉测量探测汶川地震龙门山区滑坡的时空分布特征
(2019) Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 48 (2), pp. 265, Cited 1 times.
DOI: 10.11947/j.AGCS.2019.20180047
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063346222&doi=10.11947%2Fj.AGCS.2019.20180047&partnerID=40&md5=deaa4f13c48700235b6403bb2f07ea32

AFFILIATIONS: East China Jiaotong University, Nanchang, Jiangxi, China
INDEX KEYWORDS: hazard assessment; landslide; radar interferometry; remote sensing; satellite altimetry; spatiotemporal analysis; time series analysis; China; Longmen Mountains
PUBLISHER: SinoMaps Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fu, Z., Long, J., Chang, M.
AUTHOR FULL NAMES: Fu, Zhiyong (57210913956); Long, Jingjing (57193233668); Chang, Ming (36727157900)
57210913956; 57193233668; 36727157900
Distribution characteristics and evolution rules of sediment supply for debris flow occurrence around Longchi Town of Dujiangyan City，Sichuan Province 汶川地震前后四川都江堰龙池镇地区泥石流物源分布特征及其演化规律
(2019) Chinese Journal of Geological Hazard and Control, 30 (6), pp. 10 - 19, Cited 4 times.
DOI: 10.16031/j.cnki.issn.1003-8035.2019.06.02
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152115666&doi=10.16031%2Fj.cnki.issn.1003-8035.2019.06.02&partnerID=40&md5=31248491c1f87a2c6425c46d77d4cc65

AFFILIATIONS: China University of Geosciences, Wuhan, Hubei, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A number of debris flows have occurred since the occurrence of the Wenchuan earthquake in Longchi village of Dujiangyan City，China． The ＲS and GIS techniques combined with the field investigation were conducted in this paper． Five-period remote sensing images，before and after Wenchuan earthquake，were selected to examine distribution characteristics and evolution rules of sediment supply for debris flow in recent ten years． The results show that sediments found after the Wenchuan earthquake are mainly distributed in the sandstone area with the slope angle of 36° to 46°． Most of them spread over the slope aspects of east and southeast，within 300 m from faults． After the rainstorm in 2010，the sediments are mainly distributed in the sandstone area with the slope angle of 26° to 46°． The favorable aspects and distance to faults do not make any change． Five years after Wenchuan earthquake，the sediments are mainly distributed in the south-aspect area with a distance of more than 300 m from faultst，which is different from these after the Wenchuan earthquake and heavy rainfall in 2011. The number and area of sediment are stated for analyzing the evolution rules of sediments in the study area． The statistic result shows that the number and area of sediments increased sharply after the Wenchuan earthquake，then decreased gradually，and finally recovered to the amount of preearthquake level ten years later． The evolution rules of sediments in the study area are basically the same as the overall evolution trend of sediments for debris flow in slope，slope aspect，distance from faults and lithology． © 2019 Editorial Office of The Chinese Journal of Geological Hazards and Control
AUTHOR KEYWORDS: debris flow; distribution characteristics; evolution rule; sediment; Wenchuan earthquake
REFERENCES: Journal of the China Ailway Society, (1992); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Advances in Water Science, (2006); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Chang, Ming, Hazard assessment of debris flows in the Wenchuan earthquake-stricken area, South West China, Landslides, 14, 5, pp. 1783-1792, (2017); 
Comparing Models of Debris Flow Susceptibility in the Alpine Environment J Geomorphology, (2008); 
Blahůt, Jan, Analysis of landslide inventories for accurate prediction of debris-flow source areas, Geomorphology, 119, 1-2, pp. 36-51, (2010); 
Evolution of Earthquake Triggered Landslides in the Kashmir Himalaya Northern Pakistan J Geomorphology, (2010); 
Giordan, Daniele, Morphological and kinematic evolution of a large earthflow: The Montaguto landslide, southern Italy, Geomorphology, 187, pp. 61-79, (2013); 
Tseng, Chihming, Application of a multi-temporal, LiDAR-derived, digital terrain model in a landslide-volume estimation, Earth Surface Processes and Landforms, 38, 13, pp. 1587-1601, (2013)
PUBLISHER: Editorial Office of The Chinese Journal of Geological Hazards and Control
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wen, M., Liu, C., Liu, Y., Fang, Z.
AUTHOR FULL NAMES: Wen, Mingsheng (24385977500); Liu, Chuanzheng (59772763200); Liu, Yanhui (55742113200); Fang, Zhiwei (57203835364)
24385977500; 59772763200; 55742113200; 57203835364
Regional warning of geological hazards in high seismic intensity area of Wenchuan Earthquake 汶川地震高烈度区崩滑流灾害区域预警
(2019) Chinese Journal of Geological Hazard and Control, 30 (1), pp. 10 - 19, Cited 6 times.
DOI: 10.16031/j.cnki.issn.1003-8035.2019.01.02
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140343601&doi=10.16031%2Fj.cnki.issn.1003-8035.2019.01.02&partnerID=40&md5=6c8c18d2fc7a3c47f277618cf2200974

AFFILIATIONS: China Institute of Geo-Environment Monitoring, Beijing, Beijing, China
ABSTRACT: The regional early-warning methods for geological hazards were studied in 11 counties of Wenchuan earthquake high seismic intensity area (Wenchuan, Beichuan, Mianzhu, Qingchuan, Maoxian, Dujiangyan, Anxian, Shifang, Pengzhou, Pingwu and Wenxian). The research contents included developmental grade, potential grade and dangerous grade early warning. The types of geological hazard change from landslide and collapse before earthquake to debris flow after earthquake. The number of hazards after earthquake is 8. 7 times before earthquake. The distribution area of high developmental grade zone is 204. 32 km, there were 8. 11 hazards per square kilometer, and locating in Shifang, Mianzhu, Anxian, Wenxian, and Wenxian. The potential grade indexes of geo-hazards were worked out according to 11 assessment factors such as landform gradient, aspect, elevation, stratigraphic layers, topographic feature, fault structure, seismic intensity, average annual precipitation, river system, human engineering activities (roads) and developmental grade index, etc. The area of extremely high potential grade aeeounted for 4. 17% of the total area. The number of hazard points aeeounted for 44. 15% of the total hazards. There are 2.44 hazards per square kilometer. The areas of high potential grade were facial distribution and locally linear distribution. The early warning of dangerous grade included 3 factors, which were seismic activity, rainfall in flood season and daily precipitation. The high dangerous grade areas caused by the earthquake were mainly in Wenchuan, Dujiangyan, Pengzhou, Shifang, Mianzhu, Qingchuan and Wenxian, etc. The high dangerous grade areas caused by the rainfall in flood season of 2013 were Dujiangyan, Mianzhu, Anxian, Beichuan, Pingwu and Wenxian, etc. The high dangerous grade areas caused by the daily precipitation at July 9, 2013 were Dujiangyan, Pengzhou, Shifang, Mianzhu and Anxian, etc. The actual hazard points of the 3 triggering factors were in good agreement with the key areas of the dangerous grade early warning. The research method in this paper can be used as a scientific support for geological hazard early warning triggered by earthquake, rainfall in flood season, and daily precipitation. © 2019 Editorial Office of The Chinese Journal of Geological Hazards and Control. All rights reserved.
AUTHOR KEYWORDS: dangerous grade; developmental grade; geological hazard; potential grade; regional early-warning
REFERENCES: Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Engineering Geology, (2011); 
Chinese Journal of Geological Hazard and Control, (2017); 
Yin, Yueping, Long runout geological disaster initiated by the ridge-top rockslide in a strong earthquake area: A case study of the Xinmo landslide in Maoxian County, Sichuan Province, Geology in China, 44, 5, pp. 827-841, (2017); 
Hydrogeology and Engineering Geology, (2016); 
Journal of Mountain Science, (2010); 
Journal of Engineering Geology, (2010); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Yin, Yueping, Catastrophic landslides associated with the M8.0 Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 70, 1, pp. 15-32, (2011); 
Journal of Geological Hazards and Environment Preservation, (2009)
PUBLISHER: Editorial Office of The Chinese Journal of Geological Hazards and Control
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, H., Yang, Z., Qiao, J., Shi, L.
AUTHOR FULL NAMES: Tian, Hongling (14520009600); Yang, Zongji (24485723300); Qiao, Jianping (24485090400); Shi, Lili (55818315500)
14520009600; 24485723300; 24485090400; 55818315500
Monitoring and early warning of debris flow in an earthquake impacted area, Baishahe catchment, southwest China
(2019), pp. 214 - 221, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078107896&partnerID=40&md5=2c2cfc8b7208a96d006c7e154b42e34d

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chengdu Geological Environment Monitoring Station, Chengdu, China
ABSTRACT: After 10 years of the Wenchuan earthquake of China, the post-seismic landslides are turning weak. However, the debris flows in earthquake-stricken area continue to be threat. In order to reduce the risk from debris flows in this region, we discuss the operation of an alert system, monitoring objectives, and early-warning policies. Three gullies in the Baishahe catchment, Dujiangyan, Southwest China were selected and rain-gauge, tilt-sensor, mud-meter and ground acoustic meter combined to a warning system in April, 2014. The data collected from these events shows changes in susceptibility levels and triggering rainfall complicating the application of a fixed rainfall threshold for any alert system. © 2019 Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation. All rights reserved.
AUTHOR KEYWORDS: Debris flow; Monitoring; Susceptibility; Warning system
INDEX KEYWORDS: Alarm systems; Catchments; Debris; Hazards; Magnetic susceptibility; Monitoring; Rain; Rain gages; Runoff; Alert systems; Debris flows; Early warning; Rain gauges; Rainfall thresholds; Seismic landslides; Southwest China; Wenchuan Earthquake; Earthquakes
REFERENCES: Angeli, Maceo Giovanni, A critical review of landslide monitoring experiences, Engineering Geology, 55, 3, pp. 133-147, (2000); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Brayshaw, Drew, Debris flow initiation and sediment recharge in gullies, Geomorphology, 109, 3-4, pp. 122-131, (2009); 
Fan, Xuanmei, What we have learned from the 2008 Wenchuan Earthquake and its aftermath: A decade of research and challenges, Engineering Geology, 241, pp. 25-32, (2018); 
Proceedings the International Symposium on Earthquake Induced Landslides, (2013); 
Hongling, Tian, Monitoring on earthquake induced landslides - A case study in northwest Chengdu, China, Geotechnical Engineering, 43, 2, pp. 71-74, (2012); 
Rosi, Alberto, Landslide monitoring with sensor networks: Experiences and lessons learnt from a real-world deployment, International Journal of Sensor Networks, 10, 3, pp. 111-122, (2011); 
Research of Soil and Water Conservation, (2011); 
Yin, Yueping, Heavy-rainfall-induced catastrophic rockslide-debris flow at Sanxicun, Dujiangyan, after the Wenchuan Ms 8.0 earthquake, Landslides, 13, 1, pp. 9-23, (2016); 
Research on Monitoring and Early Warning of Rainfall Induced Landslide and Debris Flows, (2018)
PUBLISHER: Association of Environmental and Engineering Geologists
SPONSORS: Access Limited Construction, Association of Environmental and Engineering Geologists, BGC Engineering Inc., et al., Geobrugg North America, KANE Geotech Inc.
CONFERENCE NAME: 7th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment
CONFERENCE DATE: 2019-06-10 through 2019-06-13
CONFERENCE LOCATION: Golden
CONFERENCE CODE: 156523
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, P., Feng, Z., Mannan, A., Chen, S., Ullah, T.
AUTHOR FULL NAMES: Chen, Panpan (57207031100); Feng, Zhongke (8877963600); Mannan, Abdul (57201319943); Chen, Shilin (57207040155); Ullah, Tauseef (57218304836)
57207031100; 8877963600; 57201319943; 57207040155; 57218304836
Assessment of soil loss from land use/land cover change and disasters in the longmen shan mountains, China
(2019) Applied Ecology and Environmental Research, 17 (5), pp. 11233 - 11247, Cited 14 times.
DOI: 10.15666/aeer/1705_1123311247
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073717986&doi=10.15666%2Faeer%2F1705_1123311247&partnerID=40&md5=458995380924b01221debad79f5e1a1a

AFFILIATIONS: Beijing Key Laboratory of Precision Forestry, Beijing Forestry University, Beijing, Beijing, China; School of Nature Conservation, Beijing Forestry University, Beijing, Beijing, China
ABSTRACT: Soil erosion is the main cause of the decline in global available land resources, and China is one of the countries suffering from severe soil erosion. In this paper, the RUSLE model and GIS were used to assess the changes in soil erosion in different ecosystems and counties. The results showed that from 2005 to 2017, the highest rate of ecosystem change was in the other ecosystems category, with an increase in mean soil loss to 4.06 t·ha-1·year-1. For the counties, the highest soil erosion was recorded in Maoxian County during the study period, because Maoxian County was one of the severely affected counties in the Wenchuan Earthquake. The mean soil loss in Yingjing was relatively small, as the estimates for 2005 and 2017 were 0.08 t ha-1·year-1 and 0.09 t·ha-1·year-1, respectively. The areas with severe soil loss are along rivers, mainly distributed along the Minjiang and Tuojiang River basins and their tributaries. The findings of our study will be helpful for identifying high-risk zones, and developing policies to minimize human, environmental and economic losses in any disastrous event. © 2019, ALÖKI Kft., Budapest, Hungary.
AUTHOR KEYWORDS: Ecosystem; Geo-hazards; Landsat; Revised universal soil loss equation; Soil erosion
REFERENCES: Natural Hazards and Earth System Sciences Discussion, (2013); 
Anees, Mohd Talha, Soil erosion analysis by RUSLE and sediment yield models using remote sensing and GIS in Kelantan state, Peninsular Malaysia, Soil Research, 56, 4, pp. 356-372, (2018); 
Journal of Geographic Information System, (2014); 
Balasubramani, K., Estimation of soil erosion in a semi-arid watershed of Tamil Nadu (India) using revised universal soil loss equation (rusle) model through GIS, Modeling Earth Systems and Environment, 1, 3, (2015); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Diodato, Nazzareno, Estimating monthly (R)USLE climate input in a Mediterranean region using limited data, Journal of Hydrology, 345, 3-4, pp. 224-236, (2007); 
Diyabalanage, Saranga, Impact of soil and water conservation measures on soil erosion rate and sediment yields in a tropical watershed in the Central Highlands of Sri Lanka, Applied Geography, 79, pp. 103-114, (2017); 
Journal of Mountain Science, (2008)
PUBLISHER: Corvinus University of Budapest
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Han, Z., Li, Y., Du, Y., Wang, W., Chen, G.
AUTHOR FULL NAMES: Han, Zheng (55556913000); Li, Yange (55339639500); Du, Yinfei (36915091500); Wang, Weidong (57192615168); Chen, Guangqi (55577206900)
55556913000; 55339639500; 36915091500; 57192615168; 55577206900
Noncontact detection of earthquake-induced landslides by an enhanced image binarization method incorporating with Monte-Carlo simulation
(2019) Geomatics, Natural Hazards and Risk, 10 (1), pp. 219 - 241, Cited 22 times.
DOI: 10.1080/19475705.2018.1520745
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068741130&doi=10.1080%2F19475705.2018.1520745&partnerID=40&md5=53f549eb37730e0a4b6b6fa855b20d95

AFFILIATIONS: Department of Road Engineering, Central South University, Changsha, Hunan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Central South University, Changsha, Hunan, China; Department of Civil and Structural Engineering, Kyushu University, Fukuoka, Fukuoka, Japan
ABSTRACT: Detecting landslides using remote sensing images involves converting gray level images into binary images. Given the complex background and non-uniform illumination in the regional remote sensing image, the commonly-used global thresholding methods are limited to interpret some landslides those hidden in the shadow. In this paper, we report on an enhanced image thresholding method for the noncontact detection of earthquake-induced landslides. The proposed method incorporates Monte-Carlo simulation into the local thresholding method, and essential issues, regarding complex illumination condition and uncertainties of determining block size in local thresholding method, are addressed. To better separate landslide candidate objects from the background, we incorporate Digital Surface Model (DSM) into the binary image, such that the interferences by built-up areas, terraces, and rivers can be significantly reduced considering the indicator of slope gradient. The described method has been tested using two benchmark tests, showing that the proposed method performs well dealing with the complex background and illumination condition. As a case study, we use the proposed method to detect landslides in a remote sensing image near Beichuan area after the 2008 Ms8.0 Wenchuan earthquake. Results demonstrate that the presented method interprets landslides resembling those of manually visual delineation. © 2019, © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: Image binarization; Landslides; Local thresholding method; Monte-Carlo simulation; The Wenchuan Earthquake
INDEX KEYWORDS: Benchmarking; Binary images; Earthquakes; Image enhancement; Intelligent systems; Landslides; Remote sensing; Digital surface models; Earthquake-induced landslides; Illumination conditions; Image binarization; Local thresholding; Non-uniform illumination; Remote sensing images; Wenchuan Earthquake; Monte Carlo methods
REFERENCES: Bataineh, Bilal Mohammed Ahmad, An adaptive local binarization method for document images based on a novel thresholding method and dynamic windows, Pattern Recognition Letters, 32, 14, pp. 1805-1813, (2011); 
Bernsen, John A C, DYNAMIC THRESHOLDING OF GREY-LEVEL IMAGES., Proceedings - International Conference on Pattern Recognition, pp. 1251-1255, (1986); 
Agric for Fish, (2013); 
Chang, Kuo Jen, Analysis of landsliding by earthquake shaking using a block-on-slope thermo-mechanical model: Example of Jiufengershan landslide, central Taiwan, Engineering Geology, 80, 1-2, pp. 151-163, (2005); 
Chou, Chienhsing, A binarization method with learning-built rules for document images produced by cameras, Pattern Recognition, 43, 4, pp. 1518-1530, (2010); 
Dai, Fuchu, Landslide characteristics and slope instability modeling using GIS, Lantau Island, Hong Kong, Geomorphology, 42, 3-4, pp. 213-228, (2002); 
Proc ICDAR, (1991); 
Gatos, Basilis G., DIBCO 2009: Document image binarization contest, International Journal on Document Analysis and Recognition, 14, 1, pp. 35-44, (2011); 
Gatos, Basilis G., Adaptive degraded document image binarization, Pattern Recognition, 39, 3, pp. 317-327, (2006); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhu, M., Du, X., Zhang, X., Luo, H., Wang, G.
AUTHOR FULL NAMES: Zhu, Moning (57201005642); Du, Xiaoxia (56580927700); Zhang, Xuehua (57192252587); Luo, He (26641908200); Wang, Guoqiang (56359177700)
57201005642; 56580927700; 57192252587; 26641908200; 56359177700
Multi-UAV Rapid-Assessment Task-Assignment Problem in a Post-Earthquake Scenario
(2019) IEEE Access, 7, art. no. 8730316, pp. 74542 - 74557, Cited 42 times.
DOI: 10.1109/ACCESS.2019.2920736
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068350436&doi=10.1109%2FACCESS.2019.2920736&partnerID=40&md5=48fc354d69d9758ffe8d1f26bf3e3033

AFFILIATIONS: School of Management, Hefei University of Technology, Hefei, Anhui, China; National Earthquake Response Support Service, Beijing, Beijing, China; Key Laboratory of Process Optimization and Intelligent Decision-making, Ministry of Education of the People's Republic of China, Beijing, Beijing, China
ABSTRACT: The rapid assessment of earthquake-stricken regions immediately after a seismic event is crucial for earthquake relief operations. Since unmanned aerial vehicles (UAVs) can quickly reach the affected areas and obtain images, they are widely used in the post-earthquake rapid assessment. However, sensor noise and other unavoidable errors can affect the quality of images acquired by sensors attached to the UAVs, which can, in turn, reduce the quality of the assessment. We defined a new problem in the application of multiple UAVs in the rapid assessment of earthquake-stricken regions. The rapid-assessment task-assignment problem (RATAP) was used to construct the assignment plan for multiple UAVs in a rapid-assessment task while considering the weights of potential targets, the endurance of the UAVs, and the sensor errors. The RATAP was formulated as a variant of the team orienteering problem (TOP) called the revisit-allowed TOP with reward probability (RTOP-RP). We then developed an efficient hybrid particle swarm optimization with simulated annealing (HPSO-SA) algorithm, which produced a high-quality solution for the RATAP, and confirmed the effectiveness and rapidity of our algorithm through numerical experiments. Finally, we conducted a case study based on real-world data from the 2008 Wenchuan earthquake in China to demonstrate our approach. © 2013 IEEE.
AUTHOR KEYWORDS: multiple unmanned aerial vehicles; Post-earthquake; rapid-assessment task-assignment problem; target-revisit-allowed strategy
INDEX KEYWORDS: Antennas; Combinatorial optimization; Particle swarm optimization (PSO); Simulated annealing; Unmanned aerial vehicles (UAV); 2008 wenchuan earthquakes; Earthquake scenario; High-quality solutions; Hybrid Particle Swarm Optimization; Numerical experiments; Potential targets; Rapid assessment; Team orienteering problems; Earthquakes
REFERENCES: IUFRO World Series, (2009); 
Global Assessment Report on Disaster Risk Reduction, (2009); 
Gar Atlas Unveiling Global Disaster Risk, (2017); 
Global Risks Report 2016, (2016); 
Oruc, Buse Eylul, Post-disaster assessment routing problem, Transportation Research Part B: Methodological, 116, pp. 76-102, (2018); 
Kalman Šipoš, Tanja, Rapid seismic risk assessment, International Journal of Disaster Risk Reduction, 24, pp. 348-360, (2017); 
Zhang, Shaohua, GIS-Based Rapid Disaster Loss Assessment for Earthquakes, IEEE Access, 7, pp. 6129-6139, (2019); 
Nadi, Ali, Adaptive multi-agent relief assessment and emergency response, International Journal of Disaster Risk Reduction, 24, pp. 12-23, (2017); 
Feng, Tienan, Estimation of earthquake casualties using high-resolution remote sensing: A case study of Dujiangyan city in the May 2008 Wenchuan earthquake, Natural Hazards, 69, 3, pp. 1577-1595, (2013); 
Giordan, Daniele, Review article: The use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management, Natural Hazards and Earth System Sciences, 18, 4, pp. 1079-1096, (2018)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhao, M., Chen, S., Yuen, D.
AUTHOR FULL NAMES: Zhao, Ming (57207846017); Chen, Shi (8578658600); Yuen, David A. (57202896867)
57207846017; 8578658600; 57202896867
Waveform classification and seismic recognition by convolution neural network 基于深度学习卷积神经网络的地震波形自动分类与识别
(2019) Acta Geophysica Sinica, 62 (1), pp. 374 - 382, Cited 93 times.
DOI: 10.6038/cjg2019M0151
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063051280&doi=10.6038%2Fcjg2019M0151&partnerID=40&md5=4d9f967251d55cc3d83f528c711cb5f8

AFFILIATIONS: Institute of Geophysics, China Earthquake Administration, Beijing, China; University of Minnesota Twin Cities, Minneapolis, MN, United States; China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: The development of efficient, high-precision, and universal automatic waveform pick-up algorithm is more and more important in the background of earthquake big data. The main challenge comes from how to adapt to the classification of different types of seismic events in different regions. In this paper, according to the seismic event-noise classification problem, a convolutional neural network method was used to train the dataset based on 13839 Wenchuan earthquake aftershocks and 8900 new Wenchuan aftershock events were used as the test data set. The training and detection accuracy rates were both over 95%. In the detection of continuous waveforms, the CNN method is superior to the traditional methods of STA/LTA and Fbpicker in precision and recall rate, and can find a large number of manually selected microseismic events that are easily missed. Finally, we use the trained optimal model to identify 8-day continuous waveform data from 441 stations nationwide. CNN detects 7016 waveforms, then we pick up 1380 pairs of P and S arrival times using an automatic picking algorithm, finally the pick-ups were successfully associated with 540 earthquake catalog events. The overall recognition accuracy of events above magnitude 1 was 54% and 80% above magnitude 2, while in some areas such as Sichuan and Xinjiang the detection rate is higher. It is shown that CNN neural network has broad application prospects in the real-time earthquake detection and location. © 2019, Science Press. All right reserved.
AUTHOR KEYWORDS: Convolutional neural network(CNN); Waveform auto-picking
INDEX KEYWORDS: Classification (of information); Convolution; Earthquakes; Neural networks; Statistical tests; Auto pickings; Automatic waveforms; Continuous waveforms; Convolution neural network; Convolutional neural network; High-precision; Neural network method; Seismic event; Waveform auto-picking; Waveforms; Pickups; accuracy assessment; aftershock; algorithm; artificial neural network; data set; detection method; earthquake catalogue; earthquake magnitude; precision; seismic noise; waveform analysis; China; Sichuan; Wenchuan
REFERENCES: Akaike, Hirotsugu, A New Look at the Statistical Model Identification, IEEE Transactions on Automatic Control, 19, 6, pp. 716-723, (1974); 
13th World Conference on Earthquake Engineering, (2004); 
Bull Seismol Soc Am, (1978); 
Chen, Chen, PhasePApy: A robust pure Python package for automatic identification of seismic phases, Seismological Research Letters, 87, 6, pp. 1384-1396, (2016); 
Fang, Lihua, Aftershock observation and analysis of the 2013 Ms 7.0 Lushan Earthquake, Seismological Research Letters, 86, 4, pp. 1135-1142, (2015); 
Gentili, Stefania, Automatic picking of P and S phases using a neural tree, Journal of Seismology, 10, 1, pp. 39-63, (2006); 
Deep Learning, (2015); 
He, Kaiming, Deep residual learning for image recognition, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2016-December, pp. 770-778, (2016); 
Küperkoch, Ludger, Automated determination of P-phase arrival times at regional and local distances using higher order statistics, Geophysical Journal International, 181, 2, pp. 1159-1170, (2010); 
Kong, Qingkai, Earth Sciences: MyShake: A smartphone seismic network for earthquake early warning and beyond, Science Advances, 2, 2, (2016)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, X., Shen, X., Liu, J., Wu, Y., Zheng, Y.
AUTHOR FULL NAMES: Zhang, Xuemin (55715192900); Shen, Xuhui (7402721678); Liu, Jing (59157699000); Wu, Yanqiang (12802797700); Zheng, Yong (57208157067)
55715192900; 7402721678; 59157699000; 12802797700; 57208157067
Analysis on the Yushu earthquake preparation process based on multi-geophysical field observations 多地球物理场观测的玉树地震孕育过程分析
(2018) National Remote Sensing Bulletin, 22, pp. 56 - 63, Cited 3 times.
DOI: 10.11834/jrs.20187167
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062920984&doi=10.11834%2Fjrs.20187167&partnerID=40&md5=fdd1d48c03e4b70af4f96e88c5aba26b

AFFILIATIONS: Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China; Institute of Crustal Dynamics, Chinese Academy of Sciences, Beijing, Beijing, China; The First Monitoring and Application Center, China Earthquake Administration, Beijing, China; Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: Multi-geophysical field observation is the main academic domain in research on earthquake preparation mechanisms, and satellite-based remote sensing technologies provide strong support for this study. To obtain a comprehensive understanding of the 2010 Yushu earthquake, the earthquake preparation process was studied based on multi-geophysical field observations. The regional strain field was inversed from GPS data, and co- and post-stress effects were discussed by applying the focal mechanism model from the Wenchuan earthquake to the Yushu earthquake to distinguish their relationship. Then, all the precursors to the Yushu earthquake were collected and classified by their occurrence time and the parameters of GPS strain, gravity, electromagnetic fields, and infrared. The independence of the Yushu earthquake in terms of its preparation process and occurrence was verified by using regional GPS stress and strain field results and with the stress-triggering effects of the Wenchuan earthquake used as basis. The developing time chart of various anomalous information of the Yushu earthquake, which occurred on April 14, 2010, was drawn by integrating multi-geophysical parameters and combining the related results of seismology, gravity field, geochemical, infrared, and ionospheric monitoring studies. The remote sensing technologies present special monitoring advantages in the region with sparse station distribution. The three typical preparation processes of the Yushu earthquake can be divided based on the corresponding response of multi-geophysical parameters, and the underground rock in different stress states can excite anomalies in different geophysical fields. GPS stress and strain fields are the main parameter in long-term earthquake monitoring, and the space electromagnetic field presents evident perturbations in the impending time period. The coupling process and connections among multi-geophysical fields require further investigation. Satellite-based remote sensing technologies play important roles in this earthquake analysis and show significant advantages in regions with few seismic stations. © 2018, Science Press. All right reserved.
AUTHOR KEYWORDS: GPS strain field; Multi-geophysical fields; Preparation process; Yushu earthquake
INDEX KEYWORDS: Electromagnetic fields; Global positioning system; Remote sensing; Space optics; Geophysical parameters; Ionospheric monitoring; Multi-geophysical fields; Preparation mechanisms; Preparation process; Remote sensing technology; Space electromagnetic fields; Strain fields; Earthquakes
REFERENCES: Chen, Lichun, The MS7.1 Yushu earthquake surface rupture and large historical earthquakes on the Garzê-Yushu Fault, Chinese Science Bulletin, 55, 31, pp. 3504-3509, (2010); 
Rec Dev World Seismol, (2010); 
Chen, Zhangli, On the earthquake prediction (I) - Discussion about some experience and its basic point for earthquake prediction in China, Earthquake, 28, 1, pp. 1-18, (2008); 
Advances in Earth Science, (2011); 
Diao, Guiling, Tectonic block attribution of Wenchuan and Yushu earthquakes distinguished by focal mechanism type, Acta Geophysica Sinica, 53, 8, pp. 1778-1783, (2010); 
Guo, Liangqian, The variation of the deformation-strain field before MS7.1 Yushu earthquake, Acta Geophysica Sinica, 54, 8, pp. 1990-1996, (2011); 
Jiang, Haikun, Analyes on statistical features of precursor based on earthquake cases in China mainland, Acta Seismologica Sinica, 31, 3, pp. 245-259, (2009); 
Progress in Geophysics, (2011); 
Li, Gang, Retrospection on the conclusions from earthquake tendency forecasts before the Yushu M7.1 earthquake, Earthquake, 31, 3, pp. 64-76, (2011); 
Liu, Chao, Quick moment tensor solution for 14 April 2010 Yushu. Qinghai, earthquake, Acta Seismologica Sinica, 32, 3, pp. 366-368, (2010)
PUBLISHER: Science Press dmchen@issas.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Li, C., Wang, M., Liu, K.
AUTHOR FULL NAMES: Li, Congrong (56368110500); Wang, Ming (55732001400); Liu, Kai (56896481800)
56368110500; 55732001400; 56896481800
A decadal evolution of landslides and debris flows after the Wenchuan earthquake
(2018) Geomorphology, 323, pp. 1 - 12, Cited 81 times.
DOI: 10.1016/j.geomorph.2018.09.010
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053192518&doi=10.1016%2Fj.geomorph.2018.09.010&partnerID=40&md5=2809e51ef450ee3e8817777d6d38f3c3

AFFILIATIONS: Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing, China
ABSTRACT: The 2008 Wenchuan earthquake triggered numerous coseismic landslides. The loose materials were retained on steep terrains and deep gullies as well as in river channels, which increased higher flooding hazard and geo-hazard (landslides and debris flows) risks in the area. In this paper, between 2008 and 2016 we monitored landslides and debris flows occurred during rainfall, especially the high rainfall amounts in 2013, which caused serious damage to reconstructed villages. The changes over time aids in understanding long-term landscape evolution in the investigated area impacted by major earthquakes as well as in regions with comparable settings. With the aid of a GIS platform combined with field investigations, we continuously tracked the area and movement paths of the loose deposit materials in all the debris flow gullies and coseismic landslides in the study area. And then the spatial and temporal evolutionary patterns of these movements as well as the evolution under different triggering factors were analyzed using the terrain and precipitation information from the past nine years. The results showed that both the area and number of coseismic landslides decreased over time and that the deposited materials moved to areas of lower elevation and lower slope. In addition, the new landslides occurred more easily in areas of low elevation and high slope during periods of normal rainfall. Under the high rainfall, many new landslides and expansion processes occurred easily at high altitudes, providing loose materials for debris flows. Although the overall geoenvironment in the earthquake-stricken area has a recovering tendency, the outburst of hazards triggered by future extreme rainfalls is still expected and this kind of fluctuating cycle may last for an unexpectedly longer period. © 2018 Elsevier B.V.
AUTHOR KEYWORDS: Debris flows; Hazards evolution; Landslides; Precipitation
INDEX KEYWORDS: coseismic process; debris flow; decadal variation; hazard assessment; landslide; precipitation (climatology); rainfall; Sichuan earthquake 2008; terrain; trigger mechanism; China; Sichuan; Wenchuan
REFERENCES: Barnard, Patrick L., Natural and human-induced landsliding in the Garhwal Himalaya of Northern India, Geomorphology, 40, 1-2, pp. 21-35, (2001); 
Chiou, Shianjin, Evaluating landslides and sediment yields induced by the chi-chi earthquake and followed heavy rainfalls along the ta-chia river, Journal of GeoEngineering, 2, 2, pp. 73-83, (2007); 
Clark, Kasey E., Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 1, pp. 47-70, (2016); 
Engineering Geology, (2004); 
Dai, Fuchu, Landslide risk assessment and management: An overview, Engineering Geology, 64, 1, pp. 65-87, (2002); 
Gelí, Louis, The effect of topography on earthquake ground motion: a review and new results., Bulletin of the Seismological Society of America, 78, 1, pp. 42-63, (1988); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Journal of Engineering Geology, (2011); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Nath, B., Niu, Z., Singh, R.P.
AUTHOR FULL NAMES: Nath, Biswajit (57192872300); Niu, Zheng (7101688905); Singh, Ramesh P. (57207365326)
57192872300; 7101688905; 57207365326
Land Use and Land Cover changes, and environment and risk evaluation of Dujiangyan city (SW China) using remote sensing and GIS techniques
(2018) Sustainability (Switzerland), 10 (12), art. no. 4631, Cited 71 times.
DOI: 10.3390/su10124631
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058063850&doi=10.3390%2Fsu10124631&partnerID=40&md5=8032ef18be3d63450eb8bcf23e1426b3

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; Department of Geography and Environmental Studies, University of Chittagong, Chittagong, Bangladesh; School of Life and Environmental Sciences, Chapman University, Orange, CA, United States
ABSTRACT: Understanding of the Land Use and Land Cover (LULC) change, its transitions and Landscape risk (LR) evaluation in earthquake-affected areas is important for planning and urban sustainability. In the present study, we have considered Dujiangyan City and its Environs (DCEN), a seismic-prone area close to the 2008 Wenchuan earthquake (8.0 M<inf>w</inf>) during 2007-2018. Five different multi-temporal data sets for the years 2007, 2008, 2010, 2015, and 2018 were considered for LULC mapping, followed by the maximum likelihood supervised classification technique. The individual LULC maps were further used in four time periods, i.e., 2007-2018, 2008-2018, 2010-2018, and 2015-2018, to evaluate the Land Use and Land Cover Transitions (LULCT) using combined remote sensing and GIS (Geographical Information System). Furthermore, multi-criteria evaluation (MCE) techniques were applied for LR mapping. The results of the LULC change data indicate that built-up, agricultural area, and forest cover are the prime categories that had been changed by the natural and anthropogenic activities. LULCT, along with multi-parameters, are suggested to avoid development in fault-existing areas that are seismically vulnerable for future landscape planning in a sustainable manner. © 2018 by the authors.
AUTHOR KEYWORDS: Dujiangyan city and environs; Land Use and Land Cover; Landscape risk; Remote sensing and GIS; SW China
INDEX KEYWORDS: environmental risk; forest cover; GIS; land cover; land use change; land use planning; landscape planning; maximum likelihood analysis; parameterization; remote sensing; supervised classification; sustainability; China; Dujiangyan; Sichuan; Wenchuan
REFERENCES: Land Use and Land Cover Change Lucc Implementation Strategy, (1996); 
Shi, Peijun, Landuse change mechanism in Shenzhen City, Dili Xuebao/Acta Geographica Sinica, 55, 2, pp. 151-160, (2000); 
Pan, Daiyuan, Temporal (1958-1993) and spatial patterns of land use changes in Haut-Saint-Laurent (Quebec, Canada) and their relation to landscape physical attributes, Landscape Ecology, 14, 1, pp. 35-52, (1999); 
Chen, Shupeng, Remote sensing and GIS for urban growth analysis in China, Photogrammetric Engineering and Remote Sensing, 66, 5, pp. 593-598, (2000); 
Serra Ruiz, P., Land-cover and land-use change in a Mediterranean landscape: A spatial analysis of driving forces integrating biophysical and human factors, Applied Geography, 28, 3, pp. 189-209, (2008); 
Nunes, Adélia N., Impacts of land use and cover type on runoff and soil erosion in a marginal area of Portugal, Applied Geography, 31, 2, pp. 687-699, (2011); 
König, Hannes J., Regional impact assessment of land use scenarios in developing countries using the FoPIA approach: Findings from five case studies, Journal of Environmental Management, 127, pp. S56-S64, (2013); 
Tendaupenyu, Pamela, Changes in landuse/landcover patterns and human population growth in the Lake Chivero catchment, Zimbabwe, Geocarto International, 32, 7, pp. 797-811, (2017); 
Li, Haixing, Using Land Long-Term Data Records to Map Land Cover Changes in China over 1981-2010, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10, 4, pp. 1372-1389, (2017); 
Martínez, Susana, From land cover to land use: A methodology to assess land use from remote sensing data, Remote Sensing, 4, 4, pp. 1024-1045, (2012)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Zhu, J., Lu, H., Wang, H., Yan, Y., Tang, L.
AUTHOR FULL NAMES: Zhu, Jieyuan (57198764696); Lu, Huiting (57194179748); Wang, Huifang (37092129400); Yan, Yan (56510681500); Tang, Lina (15752022000)
57198764696; 57194179748; 37092129400; 56510681500; 15752022000
Ecosystem health assessment of the Wenchuan earthquake hard-hit disaster areas during the recovery period
(2018) Shengtai Xuebao, 38 (24), pp. 9001 - 9011, Cited 9 times.
DOI: 10.5846/stxb201808081684
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059579634&doi=10.5846%2Fstxb201808081684&partnerID=40&md5=b639e69095df381b5f5748bdfaad8a4a

AFFILIATIONS: Institute of Urban Environment, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The Wenchuan earthquake in 2008 caused considerable damage to ecosystems in China. The objective of this study was to better understand the ecological recovery of the Wenchuan earthquake hard-hit disaster areas and provide a scientific basis for the development of an ecological recovery strategy. In this study, remote sensing data were used to analyze the changes in ecosystems in in the Wenchuan earthquake hard-hit areas from 2010 to 2015, including 39 districts and counties in Sichuan Province, China; furthermore, concurrent changes in water conservation, soil retention, and habitat quality were also assessed using the InVEST model. The spatial patterns and changes in ecosystem health in the Wenchuan earthquake hard-hit areas were then evaluated quantitatively using the VOR model coupled with key ecosystem services. The main conclusions were as follows: (1) the area covered by wetlands and urban lands in the Wenchuan earthquake hard-hit areas increased from 2010 to 2015, whereas that covered by vegetations and cultivated lands decreased, except for the forested environments, in areas hit by the magnitude - earthquake, which instead increased by 1309.77 hectares; (2) the mean vigor of ecosystems in the Wenchuan earthquake hard-hit areas increased obviously, and the most significant increases in mean vigor occurred in areas hit by magnitude - and - earthquakes, where vigor increased by 14.84% and 12.47%, respectively; (3) overall, the water conservation capacity in the Wenchuan earthquake hard-hit areas decreased slightly by 0.46%, whereas soil retention increased by 1.26%, and the change in habitat quality was relatively small; (4) the mean ecosystem health index (EHI) of Wenchuan earthquake hard-hit areas increased modestly (by 1.36%) from 0.6761 to 0.6853. Notably, the increase in EHI in the areas hit by magnitude - and - earthquakes were more significant than those in other areas, with increases of 4.01% and 3.48%, respectively, which indicated that the ecological recovery was most remarkable in the most severely damaged areas. It is worth noting that in some regions, including Baoxing, Hanyuan, Shimian, Fucheng, Guanghan, northwestern Wenchuan, and the northern parts of the study area, the EHI instead showed a downward trend owing to the reconstruction and development of the Wenchuan earthquake hard-hit areas. Thus, to improve the ecosystem health and sustainable regional development of the Wenchuan earthquake hard-hit areas, the good ecological recovery trend observed in the areas hit by magnitude - and - earthquakes should be maintained. Simultaneously, more focus should be on the protection of basic farmland in the central plain area and natural ecological protection work in the southern and northern regions. © 2018 Science Press. All rights reserved.
AUTHOR KEYWORDS: Ecosystem health; Ecosystem service; Recovery period; VOR model; Wenchuan earthquake
INDEX KEYWORDS: agricultural land; ecosystem health; ecosystem service; habitat quality; regional development; remote sensing; Sichuan earthquake 2008; vigor; China; Sichuan
REFERENCES: Connell, David J., Sustainable livelihoods and ecosystem health: Exploring methodological relations as a source of synergy, EcoHealth, 7, 3, pp. 351-360, (2010); 
Rapport, David J., Assessing ecosystem health, Trends in Ecology and Evolution, 13, 10, pp. 397-402, (1998); 
Rapport, David J., Eco-cultural health, global health, and sustainability, Ecological Research, 26, 6, pp. 1039-1049, (2011); 
Ecosystem Health New Goals for Environmental Management, (1992); 
Rapport, David J., What constitutes ecosystem health?, Perspectives in Biology and Medicine, 33, 1, pp. 120-132, (1989); 
Yan, Yan, Ecosystem health assessment of the Liao River Basin upstream region based on ecosystem services, Shengtai Xuebao, 36, 4, pp. 294-300, (2016); 
Costanza, Robert, What is a healthy ecosystem?, Aquatic Ecology, 33, 1, pp. 105-115, (1999); 
Phillips, Linda Bowers, Evaluating the species energy relationship with the newest measures of ecosystem energy: NDVI versus MODIS primary production (DOI:10.1016/j.rse.2008.04.012), Remote Sensing of Environment, 112, 12, pp. 4381-4392, (2008); 
Li, Zhaoqin, Remote sensing of ecosystem health: Opportunities, Challenges, and future perspectives, Sensors, 14, 11, pp. 21117-21139, (2014); 
López, Dardo Rubén, Linking ecosystem resistance, resilience, and stability in steppes of North Patagonia, Ecological Indicators, 24, pp. 1-11, (2013)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, Z., Xu, M., Chen, W., Lin, X., Cao, C., Singh, R.P.
AUTHOR FULL NAMES: Huang, Zhibin (57204500670); Xu, Min (57734835000); Chen, Wei (58735368000); Lin, Xiaojuan (57204113549); Cao, Chunxiang (14031191400); Singh, Ramesh P. (57207365326)
57204500670; 57734835000; 58735368000; 57204113549; 14031191400; 57207365326
Postseismic restoration of the ecological environment in the Wenchuan Region using satellite data
(2018) Sustainability (Switzerland), 10 (11), art. no. 3990, Cited 5 times.
DOI: 10.3390/su10113990
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055832899&doi=10.3390%2Fsu10113990&partnerID=40&md5=b2823f655c4676281bb0e51ce3dc584d

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; School of Life and Environmental Sciences, Chapman University, Orange, CA, United States
ABSTRACT: Using Landsat remote-sensing data combined with geological information extracted from ALOS and Sentinel-1A radar data, the ecological environment was evaluated in the years 2007, 2008, 2013, and 2017 through gray correlation analysis on the basis of the construction of the pressure-state-response model. The main objective of this research was to assess the ecological environment changes in Wenchuan County before and after the earthquake, and to provide reference for future social development and policy implementation. The grading map of the ecological environment was obtained for every year, and the ecological restoration status of Wenchuan County after the earthquake was evaluated. The results showed that the maximum area cover at a "safe" ecological level was over 46.4% in 2007. After the 2008 earthquake, the proportion of "unsafe" and "very unsafe" ecological levels was 40.0%, especially around the Lancang River and the western mountain area in Wenchuan County. After five years of restoration, ecological conditions were improved, up to 48.0% in the region. The areas at "critically safe" and above recovered to 85.5% in 2017 within nine years after the deadly Wenchuan earthquake of May 12, 2008. In this paper, we discuss the results of detailed analysis of ecological improvements and correlation with the degrees of pressure, state, and response layers of the Pressure-State-Response (PSR) model. © 2018 by the authors.
AUTHOR KEYWORDS: Ecological conditions; Gray correlation analysis; Multisource remote-sensing data; Spatiotemporal analysis; Wenchuan earthquake
INDEX KEYWORDS: ALOS; correlation; environmental change; Landsat; policy implementation; reconstruction; research work; restoration ecology; satellite data; seismic response; Sentinel; Sichuan earthquake 2008; social development; spatiotemporal analysis; Mekong River
REFERENCES: Environmental Protection, (2002); 
Environ Sci Manag, (2017); 
Liao, Chimei, Ecological security evaluation of sustainable agricultural development in karst mountainous area - A case study of Du'an Yao Autonomous County in Guangxi, Chinese Geographical Science, 14, 2, pp. 142-147, (2004); 
Bull Soil Water Conserv, (2015); 
J Hebei Univ Nat Sci Ed, (2017); 
Zuo, Wei, Integrated evaluation of ecological security at different scales using remote sensing: A case study of Zhongxian county, the three Gorges area, China, Pedosphere, 15, 4, pp. 456-464, (2005); 
Shao, Huaiyong, Ecological environment quality evaluation in Mining city: A case of Panzhihua, (2009); 
Cabello, Javier, The ecosystem functioning dimension in conservation: Insights from remote sensing, Biodiversity and Conservation, 21, 13, pp. 3287-3305, (2012); 
West China Dev Rev, (2022); 
Journal of Geo Information Science, (2009)
PUBLISHER: MDPI
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Lu, L., Xiang, L.-Y.
AUTHOR FULL NAMES: Lu, Huang (56652807900); Xiang, Luyang (57192179845)
56652807900; 57192179845
Method for Meteorological Early Warning of Precipitation-Induced Landslides Based on Deep Neural Network
(2018) Neural Processing Letters, 48 (2), pp. 1243 - 1260, Cited 41 times.
DOI: 10.1007/s11063-017-9778-0
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040011461&doi=10.1007%2Fs11063-017-9778-0&partnerID=40&md5=693ac5254f83f2c657cd20d1dd4302e0

AFFILIATIONS: Hubei Surveying Mapping Engineering Institute, Hubei Bureau of Surveying and Mapping, Wuhan, China; Department of Engineering, China State Shipbuilding Corporation, Beijing, China
ABSTRACT: The meteorological early warning model of precipitation-induced landslides is a significant yet challenging task, due to the complexity and uncertainty of various influence factors. Generally, the existing machine learning methods have the drawbacks of poor learning ability and weak capability of feature extraction. Inspired by deep learning technology, we propose a deep belief network (DBN) approach with Softmax classifier and Dropout mechanism for meteorological early warning of precipitation-induced landslides to overcome these problems. With the powerful nonlinear mapping ability of DBN when training a large number of sample data, we use the greedy unsupervised learning algorithm of DBN to extract the intrinsic characteristics of landslide factors. Then, to further improve prediction accuracy of landslides, the Softmax classifier is added to the top layer of DBN neural network. Moreover, the Dropout mechanism is introduced in the training process to reduce the prediction error caused by the over-fitting phenomena. Taking Wenchuan earthquake affected area for example, after analysis of the factors influencing landslide disasters, the meteorological early warning model of landslides based on Dropout DBN-Softmax is established. Compared with the existing BP neural network algorithm and BP algorithm based on Particle Swarm Optimizer (PSO-BP) algorithm, the experimental results show that the new approach proposed has the advantages of higher accuracy and better technological performances than the former algorithms. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
AUTHOR KEYWORDS: Deep neural network; Landslide; Meteorological early warning; Softmax; Wenchuan
INDEX KEYWORDS: Earthquakes; Landslides; Learning algorithms; Neural networks; Particle swarm optimization (PSO); Deep belief network (DBN); Early warning; Intrinsic characteristics; Machine learning methods; Particle swarm optimizers; Softmax; Technological performance; Wenchuan; Deep neural networks
REFERENCES: Gao, Zhongke, A directed weighted complex network for characterizing chaotic dynamics from time series, Nonlinear Analysis: Real World Applications, 13, 2, pp. 947-952, (2012); 
Alvioli, Massimiliano, Parallelization of the TRIGRS model for rainfall-induced landslides using the message passing interface, Environmental Modelling and Software, 81, pp. 122-135, (2016); 
Saro, Lee M., Determination and application of the weights for landslide susceptibility mapping using an artificial neural network, Engineering Geology, 71, 3-4, pp. 289-302, (2004); 
Pham, Binh Thai, A comparative study of different machine learning methods for landslide susceptibility assessment: A case study of Uttarakhand area (India), Environmental Modelling and Software, 84, pp. 240-250, (2016); 
Colkesen, Ismail, Susceptibility mapping of shallow landslides using kernel-based Gaussian process, support vector machines and logistic regression, Journal of African Earth Sciences, 118, pp. 53-64, (2016); 
Kornejady, Aiding, Landslide susceptibility assessment using maximum entropy model with two different data sampling methods, Catena, 152, pp. 144-162, (2017); 
Gerolymos, Nikos A., A model for grain-crushing-induced landslides-Application to Nikawa, Kobe 1995, Soil Dynamics and Earthquake Engineering, 27, 9, pp. 803-817, (2007); 
Chen, Yichin, Quantifying rainfall controls on catchment-scale landslide erosion in Taiwan, Earth Surface Processes and Landforms, 38, 4, pp. 372-382, (2013); 
Akçali, Emre, Landslide early warning system suggestion based on landslide - Rainfall threshold: Trabzon province, Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers, 24, 1, pp. 6307-6332, (2013); 
Chen, Xiaoli, Critical acceleration as a criterion in seismic landslide susceptibility assessment, Geomorphology, 217, pp. 15-22, (2014)
PUBLISHER: Springer New York LLC barbara.b.bertram@gsk.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, X., Zhan, W., Dong, X., Van Westen, C., Xu, Q., Dai, L., Yang, Q., Huang, R., Havenith, H.-B.
AUTHOR FULL NAMES: Fan, Xuanmei (12752112800); Zhan, Weiwei (57194511378); Dong, Xiujun (15758927100); Van Westen, Cees J. (6701664942); Xu, Qiang (56506033600); Dai, Lanxin (57196005924); Yang, Qin (57203314330); Huang, Runqiu (55835407700); Havenith, Hans Balder (6602586631)
12752112800; 57194511378; 15758927100; 6701664942; 56506033600; 57196005924; 57203314330; 55835407700; 6602586631
Analyzing successive landslide dam formation by different triggering mechanisms: The case of the Tangjiawan landslide, Sichuan, China
(2018) Engineering Geology, 243, pp. 128 - 144, Cited 60 times.
DOI: 10.1016/j.enggeo.2018.06.016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049857670&doi=10.1016%2Fj.enggeo.2018.06.016&partnerID=40&md5=d23c9c2d26ffd4abdd06ff4c0b593bdb

AFFILIATIONS: Chengdu University of Technology, Chengdu, China; Clemson University College of Engineering, Computing and Applied Sciences, Clemson, SC, United States; Faculty of Geo-Information Science and Earth Observation – ITC, Enschede, Overijssel, Netherlands; Université de Liège, Liege, WLG, Belgium
ABSTRACT: The catastrophic Tangjiawan landslide, triggered by the 2008 Wenchuan earthquake, blocked the Duba River, impounding one of the most dangerous coseismic barrier lakes in Beichuan, China. The lake was drained by an artificial spillway within one month after the earthquake to minimize the potential dam-breach flooding risk. However, on September 5, 2016, this landslide was reactivated and dammed the river again, creating a 20-m high dam at the same location and resulting in the formation of a barrier lake with a volume of 0.6 million m3. The day after the event we carried out a field investigation of the landslide and obtained a high-resolution image and DEM using UAV. The satellite images from 2005, 2008, 2010 and 2015 were also collected to analyze the evolution of the landslide. Together with multi-temporal DEMs, the geometry and volumes of the displaced mass and the landslide dams and barrier lakes were calculated using image interpretation and 3D spatial analysis with GIS. This landslide is of great scientific interest, as it presents a good example of multiple reactivation of a pre-historical giant landslide under different triggering conditions: a reactivation of an older landslide during the Wenchuan earthquake, and a second reactivation during a rainfall event several years later. Meanwhile from the hazard assessment and prevention perspective, it is also representative as it dammed the river twice in 2008 and 2016, posing threats to both upstream and downstream areas. We infer that the successive landslides in this region could be caused by the strong tectonic activities: including earthquakes and high average uplifting rate. The results of landslide volume analysis using multi-temporal DEMs, contribute to the landslide mechanism analysis, and suggest that the landslide volume estimation is effected by the landslide type, landslide rupture surface location, and resolution of DEM. We also compare the performance of different empirical models of landslide stability and dam-breach flood parameters and discuss their application during the quick assessment of the potential hazard of the landslide dams. Generally, the successive landslide dams at the Tangjiawan site are caused by the successive landslide reactivations on an anti-dip slope controlled by strong tectonic activity and river erosion, involve with a mass of loose materials of previous landslide deposition, and possess high flood risk to the downstream area. The experience gained in this work can be used to assist the hazard assessment and the planning of the emergency measures for similar landslide dams in the future. © 2018 Elsevier B.V.
AUTHOR KEYWORDS: Emergency response; Evolution; Hazard assessment; Landslide dams; Wenchuan earthquake
INDEX KEYWORDS: Dams; Earthquakes; Floods; Hazards; Image analysis; Lakes; Rivers; Tectonics; Emergency response; Evolution; Hazard Assessment; Landslide dam; Wenchuan Earthquake; Landslides; earthquake trigger; hazard assessment; hazard management; landslide; seismic hazard; Sichuan earthquake 2008; trigger mechanism; Beichuan; China; Sichuan
REFERENCES: Adams, John, Earthquake-dammed lakes in New Zealand, Geology, 9, 5, pp. 215-219, (1981); 
Inland Flood Hazards, (2000); 
Chen, Roufei, Topographical changes revealed by high-resolution airborne LiDAR data: The 1999 Tsaoling landslide induced by the Chi-Chi earthquake, Engineering Geology, 88, 3-4, pp. 160-172, (2006); 
Chen, Xiaoqing, Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area, Engineering Geology, 194, pp. 73-85, (2015); 
Clague, John Joseph, A review of catastrophic drainage of moraine-dammed lakes in British Columbia, Quaternary Science Reviews, 19, 17-18, pp. 1763-1783, (2000); 
Floods from Dam Failures, (1985); 
Costa, John E., FORMATION AND FAILURE OF NATURAL DAMS., Bulletin of the Geological Society of America, 100, 7, pp. 1054-1068, (1988); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Cui, Peng, Landslide-dammed lake at Tangjiashan, Sichuan province, China (triggered by the Wenchuan Earthquake, May 12, 2008): Risk assessment, mitigation strategy, and lessons learned, Environmental Earth Sciences, 65, 4, pp. 1055-1065, (2012); 
Dai, Fuchu, The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China, Geomorphology, 65, 3-4, pp. 205-221, (2005)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Chen, C., Fu, J., Sui, X., Lu, X., Tan, A.
AUTHOR FULL NAMES: Chen, Chao (57192218190); Fu, Jiaoqi (57204109227); Sui, Xinxin (26422554200); Lu, Xu (57204175647); Tan, Anhui (56402500200)
57192218190; 57204109227; 26422554200; 57204175647; 56402500200
Construction and application of knowledge decision tree after a disaster for water body information extraction from remote sensing images 面向灾后水体遥感信息提取的知识决策树构建及应用
(2018) National Remote Sensing Bulletin, 22 (5), pp. 792 - 801, Cited 28 times.
DOI: 10.11834/jrs.20188044
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054850986&doi=10.11834%2Fjrs.20188044&partnerID=40&md5=07469abe8c89868a83e55969ab2dc1f2

AFFILIATIONS: Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, China; China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing, China; Physics and Information Science, Zhejiang Ocean University, Zhoushan, Zhejiang, China
ABSTRACT: After a disaster, the same object with different spectra (such as suspended material, wave, and water depth, each of them having more than one spectrum) leads to incomplete extraction of water body information. Different objects with the same spectrum, such as shadow, asphalt pavement, and dense vegetation, decrease the extraction precision of water body information. To address this problem, the extraction method of water body information based on its characteristics after a disaster is presented in this study. First, the characteristics (i.e., spectra, geometry, texture, and spatial relationship) of water body information are analyzed on remote sensing images to construct a knowledge decision tree. Second, object-oriented segmentation is performed on remote sensing images to obtain object elements and calculate the characteristic parameters. Third, water body information after a disaster is extracted with the support of the knowledge decision tree. Finally, the water body information is post-processed. A validation experiment was performed using the high-spatial resolution remote sensing images of " 5.12 Wenchuan Earthquake." The location of the extracted water is accurate and the boundary is clear. The accuracies of the producer and the user are 0.85 and 0.94, respectively. Results showed that the method can effectively extract water body information after a disaster even when the background is complex. © 2018, Science Press. All right reserved.
AUTHOR KEYWORDS: Accuracy evaluation; Characteristic knowledge; Decision tree; Water body information extraction after disaster; Wenchuan Earthquake
INDEX KEYWORDS: Data mining; Decision trees; Disasters; Earthquakes; Image segmentation; Information retrieval; Remote sensing; Accuracy evaluation; Characteristic knowledge; High spatial resolution; Object-oriented segmentation; Remote sensing images; Spatial relationships; Water body information extractions; Wenchuan Earthquake; Extraction
REFERENCES: Chen, Chao, Photometric correction and reflectance calculation for lunar images from the Chang'E-1 CCD stereo camera, Journal of the Optical Society of America A: Optics and Image Science, and Vision, 32, 12, pp. 2409-2422, (2015); 
Chen, Chao, Extraction of bridges over water from high-resolution optical remote-sensing images based on mathematical morphology, International Journal of Remote Sensing, 35, 10, pp. 3664-3682, (2014); 
Journal of Shanghai Maritime University, (2010); 
Mechanism of Remote Sensing Information, (1998); 
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Fan, Yida, Research progress of disaster remote sensing in China, National Remote Sensing Bulletin, 20, 5, pp. 1170-1184, (2016); 
Ji, Lei, Analysis of dynamic thresholds for the normalized difference water index, Photogrammetric Engineering and Remote Sensing, 75, 11, pp. 1307-1317, (2009); 
undefined, (2011); 
Journal of Remote Sensing, (2008); 
Li, Deren Ren, Current issues in high-resolution earth observation technology, Science China Earth Sciences, 55, 7, pp. 1043-1051, (2012)
PUBLISHER: Science Press rfchen@issas.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Hu, M., Liu, Q., Wu, F., Yu, M., Jiang, S.
AUTHOR FULL NAMES: Hu, Man (55982016200); Liu, Qiuqiang (59613211300); Wu, Fei (57189332900); Yu, Mengting (57196465860); Jiang, Shenghua (35205311900)
55982016200; 59613211300; 57189332900; 57196465860; 35205311900
GIS Enabled SPH-Soil Modeling for the Post-Failure Flow of Landslides under Seismic Loadings
(2018) International Journal of Computational Methods, 15 (6), art. no. 1850046, Cited 13 times.
DOI: 10.1142/S0219876218500469
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033436748&doi=10.1142%2FS0219876218500469&partnerID=40&md5=149a4f6af2a4f7129bf5a3f8fe555e75

AFFILIATIONS: College of Engineering and Technology, Southwest University, Chongqing, China; Consultative Center for Geo-Hazard Emergency, Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: Landslide can usually be induced by a strong earthquake, and it causes very serious property damage and human casualties. Modeling of post-failure flow of landslides is one of the important approaches that can be used to simulate landslide flow developments and predict the landslide hazard zone. In this paper, a Smoothed Particle Hydrodynamics (SPH) model based on the constitution of elastic-plastic constitutive mechanics for soil has been developed for simulating the behavior of a class of geo-materials under the seismic loadings. Our SPH-Soil model considers the plastic behavior of the materials, and hence it is very important for more accurate and realistic simulations of geo-materials of soil type. The implemented materials laws in the SPH-Soil code include classical elastic-plasticity with a linear elastic part, and different applicable yield surfaces with nonassociated flow rules. In order to apply this model to actual landslide modeling the Geographic Information System (GIS) is utilized to generate site-specific models. We have thus developed a C# code to generate the particles of a given landslide site, which produces realistic particle mass and actual complicated boundaries for the SPH-Soil model. With GIS enabled, complex topography and irregular boundary can be accurately and easily built up. Then the SPH-Soil code has been applied to the well-known Daguangbao landslide, which was triggered by Wenchuan earthquake in 2008. The topographies after failure were compared with that obtained from field collected data and good agreement was found. © 2018 World Scientific Publishing Company.
AUTHOR KEYWORDS: Earthquake; Geographic information system (GIS); Landslide; Smoothed particle hydrodynamics (SPH)
INDEX KEYWORDS: Codes (symbols); Earthquakes; Elastoplasticity; Geographic information systems; Information systems; Information use; Landslides; Soils; Complex topographies; Daguangbao landslides; Elastic-plasticity; Irregular boundary; Non-associated flow rule; Realistic simulation; Smoothed particle hydrodynamics; Wenchuan Earthquake; Hydrodynamics
REFERENCES: Bui, Ha H., Lagrangian meshfree particles method (SPH) for large deformation and failure flows of geomaterial using elastic-plastic soil constitutive model, International Journal for Numerical and Analytical Methods in Geomechanics, 32, 12, pp. 1537-1570, (2008); 
Chen, Wai Fah, Nonlinear analysis in soil mechanics: theory and implementation, (1990); 
Chen, Wei, Simulation of earthquake-induced slope deformation using SPH method, International Journal for Numerical and Analytical Methods in Geomechanics, 38, 3, pp. 297-330, (2014); 
Dai, Zili, 3D numerical modeling using smoothed particle hydrodynamics of flow-like landslide propagation triggered by the 2008 Wenchuan earthquake, Engineering Geology, 180, pp. 21-33, (2014); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Haddad, Bouchra, A SPH depth integrated model for Popocatépetl 2001 lahar (Mexico): Sensitivity analysis and runout simulation, Engineering Geology, 114, 3-4, pp. 312-329, (2010); 
Hu, Dean, Penetration analysis of concrete plate by 3D FE-SPH adaptive coupling algorithm, Computers, Materials and Continua, 29, 2, pp. 155-168, (2012); 
Hu, Dean, Swelling movement induced by underground explosion of aluminized explosive in multilayered compact material, International Journal of Rock Mechanics and Mining Sciences, 71, pp. 330-339, (2015); 
Hu, Dean, Fluid-structure interaction analysis by coupled FE-SPH model based on a novel searching algorithm, Computer Methods in Applied Mechanics and Engineering, 276, pp. 266-286, (2014); 
Huang, Runqiu, The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake, May 12, 2008, China, Landslides, 9, 1, pp. 131-142, (2012)
PUBLISHER: World Scientific Publishing Co. Pte Ltd wspc@wspc.com.sg
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, Z., Wu, L., Zhang, Z.
AUTHOR FULL NAMES: Xu, Zhihua (56041164300); Wu, Lixin (55714061400); Zhang, Zhenxin (57069455200)
56041164300; 55714061400; 57069455200
Use of active learning for earthquake damage mapping from UAV photogrammetric point clouds
(2018) International Journal of Remote Sensing, 39 (15-16), pp. 5568 - 5595, Cited 21 times.
DOI: 10.1080/01431161.2018.1466083
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046016582&doi=10.1080%2F01431161.2018.1466083&partnerID=40&md5=1ee229bbc44cf153ae1fd5141de020ca

AFFILIATIONS: College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing, Beijing, China; School of Geosciences and Info-Physics, Central South University, Changsha, Hunan, China; Beijing Advanced Innovation Center for Imaging Technology, Capital Normal University, Beijing, Beijing, China
ABSTRACT: This article presents an effective classification method for earthquake damage mapping from unmanned aerial vehicles (UAV) photogrammetric point clouds. The classification method consists of three main components: (a) construction of a point feature descriptor regarding to spectral, textural, and geometrical features, (b) optimization of collecting informative training samples through an active learning (AL) method, and (c) fine-tuning the point-based classification results with contextual information. Besides using existing spectral and geometrical features, we design a textural feature based on fractal theory to construct a point feature descriptor through linear combination. A batch-model AL method called Margin Sampling and Multiclass Level Uncertainty (MS-MCLU) is proposed based on classification uncertainty using a Support Vector Machine classifier. We use a multi-label Markov random fields to fine-tune the point-based classification results with a pairwise model. The proposed method was tested using three sets of point clouds generated from UAV images over Mirabello, Lushan, and Wenchuan earthquake scenarios in 2012, Italy, and in 2013 and 2008, China, respectively. The proposed classification method was compared with that of two other feature descriptors, i.e. spectral combined with textural features (Spe_Tex) and geometrical features (Geo). The results show that classification accuracies were improved by using the proposed point feature descriptor. Results also show that the proposed MS-MCLU AL method evidently saved the cost of collecting informative training samples and produced higher classification accuracies than a random sampling strategy. Moreover, contextual information contributed to the improvement on the point-based classification results and was suggested to be considered in earthquake damage mapping applications. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
INDEX KEYWORDS: Antennas; Artificial intelligence; Earthquakes; Geometry; Mapping; Markov processes; Photogrammetry; Sampling; Unmanned aerial vehicles (UAV); Classification accuracy; Classification methods; Classification results; Contextual information; Geometrical features; Linear combinations; Markov Random Fields; Support vector machine classifiers; Classification (of information); aerial survey; earthquake damage; earthquake event; image classification; learning; Lushan earthquake 2013; mapping; Markov chain; optimization; photogrammetry; Sichuan earthquake 2008; spectral resolution; uncertainty analysis; unmanned vehicle; China; Italy; Lushan [Sichuan]; Mirabello; Sichuan; Wenchuan
REFERENCES: Al-Kadi, Omar Sultan, Texture analysis of aggressive and nonaggressive lung tumor CE CT images, IEEE Transactions on Biomedical Engineering, 55, 7, pp. 1822-1830, (2008); 
Bláha, Maroš, Large-Scale Semantic 3D Reconstruction: An Adaptive Multi-resolution Model for Multi-class Volumetric Labeling, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2016-December, pp. 3176-3184, (2016); 
European Conference on Computer Vision, (2008); 
Colomina, Ismael, Unmanned aerial systems for photogrammetry and remote sensing: A review, ISPRS Journal of Photogrammetry and Remote Sensing, 92, pp. 79-97, (2014); 
Dell’Acqua, Fabio, Remote sensing and earthquake damage assessment: Experiences, limits, and perspectives, Proceedings of the IEEE, 100, 10, pp. 2876-2890, (2012); 
Demir, Begüm M., Batch-mode active-learning methods for the interactive classification of remote sensing images, IEEE Transactions on Geoscience and Remote Sensing, 49, 3, pp. 1014-1031, (2011); 
Dominici, Donatella, UAV photogrammetry in the post-earthquake scenario: case studies in L'Aquila, Geomatics, Natural Hazards and Risk, 8, 1, pp. 87-103, (2017); 
Dong, Laigen, A comprehensive review of earthquake-induced building damage detection with remote sensing techniques, ISPRS Journal of Photogrammetry and Remote Sensing, 84, pp. 85-99, (2013); 
Duan, Fuzhou, Collapsed houses automatic identification based on texture changes of post-earthquake aerial remote sensing image, (2010); 
Floreano, Dario, Science, technology and the future of small autonomous drones, Nature, 521, 7553, pp. 460-466, (2015)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhao, J., Ding, F., Wang, Z., Ren, J., Zhao, J., Wang, Y., Tang, X., Wang, Y., Yao, J., Li, Q.
AUTHOR FULL NAMES: Zhao, Jian (59847036600); Ding, Fan (57204065568); Wang, Zhe (59649814900); Ren, Jinghuan (57190294180); Zhao, Jing (59851057000); Wang, Yeping (57190308988); Tang, Xuefeng (56567007900); Wang, Yong (57215437407); Yao, Jianyi (35087207000); Li, Qun (35761499400)
59847036600; 57204065568; 59649814900; 57190294180; 59851057000; 57190308988; 56567007900; 57215437407; 35087207000; 35761499400
A rapid public health needs assessment framework for after major earthquakes using high-resolution satellite imagery
(2018) International Journal of Environmental Research and Public Health, 15 (6), art. no. 1111, Cited 18 times.
DOI: 10.3390/ijerph15061111
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048005490&doi=10.3390%2Fijerph15061111&partnerID=40&md5=700d85174c228a04b17f56f0000f40b6

AFFILIATIONS: Chinese Center for Disease Control and Prevention, Beijing, China; Health and Family Planning Information Center of Sichuan Province, Chengdu, China; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
ABSTRACT: Background: Earthquakes causing significant damage have occurred frequently in China, producing enormous health losses, damage to the environment and public health issues. Timely public health response is crucial to reduce mortality and morbidity and promote overall effectiveness of rescue efforts after a major earthquake. Methods: A rapid assessment framework was established based on GIS technology and high-resolution remote sensing images. A two-step casualties and injures estimation method was developed to evaluate health loss with great rapidity. Historical data and health resources information was reviewed to evaluate the damage condition of medical resources and public health issues. Results: The casualties and injures are estimated within a few hours after an earthquake. For the Wenchuan earthquake, which killed about 96,000 people and injured about 288,000, the estimation accuracy is about 77%. 242/294 (82.3%) of the medical existing institutions were severely damaged. About 40,000 tons of safe drinking water was needed every day to ensure basic living needs. The risk of water-borne and foodborne disease, respiratory and close contact transmission disease is high. For natural foci diseases, the high-risk area of schistosomiasis was mapped in Lushan County as an example. Finally, temporary settlements for victims of earthquake were mapped. Conclusions: High resolution Earth observation technology can provide a scientific basis for public health emergency management in the major disasters field, which will be of great significance in helping policy makers effectively improve health service ability and public health emergency management in prevention and control of infectious diseases and risk assessment. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Earthquake; Evaluation; High-resolution remote sensing; Public health emergency management
INDEX KEYWORDS: drinking water; disaster management; disease control; GIS; health services; public health; remote sensing; risk assessment; satellite imagery; Sichuan earthquake 2008; Article; basic needs; controlled study; disease transmission; earthquake; emergency treatment; food poisoning; health care policy; health service; high risk population; human; mass disaster; mortality rate; needs assessment; refugee camp; respiratory tract disease; water borne disease; water quality; water supply; China; disaster; disaster planning; geographic information system; procedures; Sichuan; Wenchuan; Disaster Planning; Disasters; Earthquakes; Geographic Information Systems; Humans; Needs Assessment; Public Health; Risk Assessment; Satellite Imagery
REFERENCES: Zhang, Lulu, Emergency medical rescue efforts after a major earthquake: Lessons from the 2008 Wenchuan earthquake, The Lancet, 379, 9818, pp. 853-861, (2012); 
Liang, Ying, Satisfaction with economic and social rights and quality of life in a post-disaster zone in China: Evidence from earthquake-prone Sichuan, Disaster Medicine and Public Health Preparedness, 9, 2, pp. 111-118, (2015); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Ni, Sidao, The April 14th, 2010 Yushu earthquake, a devastating earthquake with foreshocks, Science China Earth Sciences, 53, 6, pp. 791-793, (2010); 
Tang, Bihan, Ya'an earthquake, The Lancet, 381, 9882, pp. 1984-1985, (2013); 
Russo, Francesco, The role of training in evacuation, WIT Transactions on Information and Communication Technologies, 44, pp. 491-502, (2012); 
Lillibridge, Scott R., Disaster assessment: The emergency health evaluation of a population affected by a disaster, Annals of Emergency Medicine, 22, 11, pp. 1715-1720, (1993); 
Ranjbar, Hamid Reza, Using high-resolution satellite imagery to provide a relief priority map after earthquake, Natural Hazards, 90, 3, pp. 1087-1113, (2018); 
Feng, Tienan, Application and prospect of a high-resolution remote sensing and geo-information system in estimating earthquake casualties, Natural Hazards and Earth System Sciences, 14, 8, pp. 2165-2178, (2014); 
Ranjbar, Hamid Reza, A GIS-based approach for earthquake loss estimation based on the immediate extraction of damaged buildings, Geomatics, Natural Hazards and Risk, 8, 2, pp. 772-791, (2017)
PUBLISHER: MDPI AG indexing@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Method of accurate-fast magnitude estimation for earthquake early warning —–Trial and application for the 2008 Wenchuan earthquake
(2018) Soil Dynamics and Earthquake Engineering, 109, pp. 227 - 234, Cited 13 times.
DOI: 10.1016/j.soildyn.2018.03.006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044104724&doi=10.1016%2Fj.soildyn.2018.03.006&partnerID=40&md5=4c8dd180afb86c7a33e5994b76f244d6

AFFILIATIONS: Beijing Jiaotong University, Beijing, China; School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: Earthquake early warning (EEW) system is one of the most useful tools to mitigate seismic hazards. Although EEW approaches have already been developed worldwide, the issues of improving the accuracy and applicability were still controversial. On the basis of the existing measurable parameters related to the earthquake magnitude, we proposed a method in terms of the squared integral displacement (ID2) to anticipate the magnitude in real-time for EEW purpose that can be used for large earthquakes. With the main-shock and aftershocks of the 2008 M<inf>s</inf> 8.0 Wenchuan earthquake, we investigated the regression relationships between the proposed ID2 and earthquake magnitude, based on which the magnitude predication formula was derived. Then the predicated accuracy from ID2 was compared with that from τ<inf>c</inf> and P<inf>d</inf>. By comparing the differences between the estimated and reported magnitudes, the proposed ID2 method was of the highest accuracy among the investigated 3 parameters. Next we analysed the ground motion characteristics in the frequency domain and established the correlations between the Fourier amplitude and spectral intensity of the initial P wave with the magnitude estimation differences, based on which a revision method of reducing such differences was put forward and the saturation effects of predicting large magnitudes were well mitigated simultaneously. © 2018 Elsevier Ltd
AUTHOR KEYWORDS: Frequency domain; Magnitude predication; Revision method; Wenchuan earthquake
INDEX KEYWORDS: Earthquake effects; Frequency domain analysis; Frequency estimation; Geophysics; Seismic waves; 2008 wenchuan earthquakes; Earthquake early warning; Frequency domains; Ground motion characteristics; Magnitude predication; Regression relationship; Revision method; Wenchuan Earthquake; Earthquakes; aftershock; early warning system; earthquake magnitude; earthquake prediction; estimation method; P-wave; Sichuan earthquake 2008
REFERENCES: Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Colombelli, Simona, Test of a threshold-based earthquake early-warning method using Japanese data, Bulletin of the Seismological Society of America, 102, 3, pp. 1266-1275, (2012); 
Kuyuk, Huseyin Serdar, Designing a network-based earthquake early warning algorithm for California: ElarmS-2, Bulletin of the Seismological Society of America, 104, 1, pp. 162-173, (2014); 
Wurman, Gilead, Toward earthquake early warning in northern California, Journal of Geophysical Research: Solid Earth, 112, 8, (2007); 
Mori, James J., Major Improvements in Progress for Southern California Earthquake Monitoring, Eos, 79, 18, (1998); 
Kilb, Debi L., The initial subevent of the 1994 Northridge, California, earthquake: Is earthquake size predictable?, Journal of Seismology, 3, 4, pp. 409-420, (1999); 
Rydelek, Paul A., Earth science: Is earthquake rupture deterministic?, Nature, 442, 7100, pp. E5-E6, (2006); 
Nakatani, Masao, Size-dependent microearthquake initiation inferred from high-gain and low-noise observations at Nikko district, Japan, Journal of Geophysical Research: Solid Earth, 105, B12, pp. 28095-28109, (2000); 
Yamada, Masumi, Using τC to estimate magnitude for earthquake early warning and effects of near-field terms, Journal of Geophysical Research: Solid Earth, 114, 5, (2009)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Qi, W., Jinxing, J.
AUTHOR FULL NAMES: Yang, Wentao (55499294400); Qi, Wenwen (55524261400); Jinxing, Zhou (57212669497)
55499294400; 55524261400; 57212669497
Decreased post-seismic landslides linked to vegetation recovery after the 2008 Wenchuan earthquake
(2018) Ecological Indicators, 89, pp. 438 - 444, Cited 90 times.
DOI: 10.1016/j.ecolind.2017.12.006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042285242&doi=10.1016%2Fj.ecolind.2017.12.006&partnerID=40&md5=22af45bfb7a4e075d18c91b81d70e02b

AFFILIATIONS: School of Soil and Water Conservation, Beijing Forestry University, Beijing, Beijing, China; Beijing Twenty-First Century Science and Technology Development Co. Ltd, Beijing, China; Jianshui Research Station, Beijing Forestry University, Beijing, Beijing, China; China Aerospace Science and Technology Corporation, Beijing, China
ABSTRACT: Major mountain earthquakes could have long-term impacts on post-seismic landslide activities. Yet, we have limited understanding of the duration of these impacts due to a lack of long-term consistent observation. This study combines multi-year high spatial resolution and high temporal resolution remote sensing images collected before and after the 12 May 2008 M<inf>W</inf> 7.9 Wenchuan earthquake to investigate post-seismic landslide changes and vegetation recovery processes at landslide sites in the epicentral area. We found that the earthquake caused significant vegetation damage by triggering co-seismic landslides. Since that time, vegetation at these landslide sites has been continuously recovering, and the total post-seismic landslide area is decreasing concurrently. Post-seismic vegetation recovery reflects and possibly promotes the decrease of post-seismic landslide activities. Our findings on post-seismic vegetation recovery at landslide sites indicate that the Wenchuan earthquake's impact on regional post-seismic landslide frequency may disappear within two decades after the major event. © 2017 Elsevier Ltd
AUTHOR KEYWORDS: Co-seismic landslide sites; Post-seismic landslide changes; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: Geophysics; Landslides; Recovery; Remote sensing; Seismology; Vegetation; 2008 wenchuan earthquakes; High spatial resolution; High temporal resolution; Remote sensing images; Seismic landslides; Vegetation damage; Vegetation recovery; Wenchuan Earthquake; Earthquakes
REFERENCES: Chen, Jin, A simple method for reconstructing a high-quality NDVI time-series data set based on the Savitzky-Golay filter, Remote Sensing of Environment, 91, 3-4, pp. 332-344, (2004); 
Introductory Time Series with R, (2009); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Guariguata, Manuel R., Landslide disturbance and forest regeneration in the Upper Luquillo Mountains of Puerto Rico, Journal of Ecology, 78, 3, pp. 814-832, (1990); 
Guo, Xiaojun, Intensity-duration threshold of rainfall-triggered debris flows in the Wenchuan Earthquake affected area, China, Geomorphology, 253, pp. 208-216, (2016); 
An Introduction to Physical Geography and the Environment, (2005); 
Hovius, Niels, Prolonged seismically induced erosion and the mass balance of a large earthquake, Earth and Planetary Science Letters, 304, 3-4, pp. 347-355, (2011); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, G., Zhou, W., Fang, J.
AUTHOR FULL NAMES: Yang, Genyun (57209799557); Zhou, Wei (55443778400); Fang, Jiaoyong (57209799025)
57209799557; 55443778400; 57209799025
Assessment of landslide Susceptibility Based on Information Quantity Model and Data Normalization 基于信息量模型和数据标准化的滑坡易发性评价
(2018) Journal of Geo-Information Science, 20 (5), pp. 674 - 683, Cited 18 times.
DOI: 10.12082/dqxxkx.2018.170535
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106321360&doi=10.12082%2Fdqxxkx.2018.170535&partnerID=40&md5=31b6d1b5a11bb24330a855e4cff43022

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: This paper used an information quantity model and four normalized models to assess earthquakeinduced shallow landslide susceptibility in a geographic information system environment. Four normalized models are Min-Max normalization, the zero-mean normalization, the logarithmic logistic normalization and the arc-tangent function normalization. The approach was applied to the Qushan-Leigu area in the Beichuan County, Sichuan Province, where many co-seismic landslides were triggered by the Wenchuan earthquake in May 2008. Seven impact factors, the slope angle, slope aspect, geology, elevation, distance to faults, distance to rivers and distance to roads, were selected as the most important conditioning factors. To assess the shallow landslide susceptibility, a spatial database of conditioning factors and a landslide inventory map were compiled in ArcGIS using data from a topographic map, a geological map and Spot-5 imageries. The information quantity values of the conditioning factors were computed and normalized based on four normalized models. The weighted values of assessment factors were determined using the analytic hierarchy process. Five landslide susceptibility maps were developed. The performance was evaluated using the receiver operating characteristic (ROC) curve. The values of the area under the curve (AUC) for four normalized models and the information quantity model are 0.807, 0.672, 0.592, 0.615 and 0.684, respectively. A comparison of the results of the landslide susceptibility assessment and the landslide inventory indicates that the Min- Max normalization had the highest predictive performance (AUC=0.807). The landslide susceptibility index values were reclassified into five susceptibility classes using the Natural Breaks approach, namely very high, high, medium, low and very low susceptibility. The results show that the very high susceptibility zone obtained using the Min-Max normalization covers about 20% of the study area. Landslides distributed in the very high susceptibility zone are close to faults and rivers. The final landslide susceptibility map has the potential to the regional landslide risk assessment and geohazard mitigation. © 2018, Science Press. All right reserved.
AUTHOR KEYWORDS: Geographic information system (GIS); Information quantity model; Landslide; Normalization; Susceptibility assessment
REFERENCES: Earth Science Frontiers, (2001); 
Chinese Journal of Geological Hazard and Control, (2017); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
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Wang, Jiajia, Landslide susceptibility assessment based on GIS and weighted information value: A case study of Wanzhou district, Three Gorges Reservoir, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 33, 4, pp. 797-808, (2014); 
Regmi, Netra Raj, A comparison of logistic regression-based models of susceptibility to landslides in western Colorado, USA, Landslides, 11, 2, pp. 247-262, (2014); 
Science Technology and Engineering, (2016); 
Shahabi, Himan, Remote sensing and GIS-based landslide susceptibility mapping using frequency ratio, logistic regression, and fuzzy logic methods at the central Zab basin, Iran, Environmental Earth Sciences, 73, 12, pp. 8647-8668, (2015); 
Wen, Haijia, A comparative study on the susceptibility mapping of earthquake triggered landslide by neural network and logistic regression model, Wenchuan County, Tumu Gongcheng Xuebao/China Civil Engineering Journal, 47, pp. 17-23, (2014)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xie, H., Xu, W., Liu, C., Yang, X.-G., Xie, H., Nie, R., Zhou, J.-W., An, R., Tian, Z., Xiao, M.
AUTHOR FULL NAMES: Xie, Heping (57202217427); Xu, Weilin (56739513600); Liu, Chao (57444861000); Yang, Xingguo (35742406600); Xie, Hongqiang (57218665823); Nie, Ruihua (15822189300); Zhou, Jia-wen (14064231100); An, Ruidong (16686444200); Tian, Zhong (13613378800); Xiao, Mingli (26421523000)
57202217427; 56739513600; 57444861000; 35742406600; 57218665823; 15822189300; 14064231100; 16686444200; 13613378800; 26421523000
Water Disasters and Their Countermeasures in Mountains 山区河流水灾害问题及应对
(2018) Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences, 50 (3), pp. 1 - 14, Cited 16 times.
DOI: 10.15961/j.jsuese.201800345
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052217272&doi=10.15961%2Fj.jsuese.201800345&partnerID=40&md5=699f5020eb5d190fd9505c7b9b250661

AFFILIATIONS: Sichuan University, Chengdu, Sichuan, China
ABSTRACT: Big natural disasters worldwide are deeply affecting survival and development of humankind. How to effectively deal with various types of natural disasters is particularly important. After the 2008 Wenchuan earthquake, public awareness about disasters in China has increased considerably and people's understanding of disasters has been greatly improved. That " People on the Earth must have disaster awareness and disaster education" has already become the common sense. Owing to its particular regional geological structure, topographic conditions, hydro-meteorology and other factors, the Western China is a region with frequent water-related disasters. Prevention of and reduction in water disasters have been important for overall development of the region and the country. As a high-level research national university in West China, building on the wisdom of water management of the historical Dujiangyan project, Sichuan University has made many innovations. Through engineering and research projects, such as flood discharge and flood control of high dams, structural safety of high dam projects, prevention of mountain torrents,sediment disasters,and landslides, and ecological environmental protection in river basins, Sichuan University has made a series of important achievements. They include: 1) development of meso-scale experiments and simulation techniques to reveal the meso-mechanism of complex water flow phenomena of high dam hydraulics, to establish more reliable criteria and calculation methods, to form a systematic meso-mechanical system, and to innovatively propose multi-level flood discharge mechanism and techniques; 2) new technology of geomechanical model destruction simulation and comprehensive test, which can reveal the overall structural safety response mechanism of high dam engineering, and establishment of a high dam-foundation-reservoir safety evaluation system capable of accurately reflecting the influence of complex geological environments and excessive floods; 3) revealing the " little water with big disaster" mechanism under joint action of mountain floods and sedimentation, and development of the " reduction of scale control and prevention" technology for extreme flood and sediment disasters that can make the uncertainty of the disasters caused by floods and sediments to a preventable scale; 4) introduction of new equipment and technologies such as the three-dimensional laser scanners for landslide deformation monitoring and expansion from " points, lines, and surfaces" to three-dimensional space as a whole, which improves the level of disaster monitoring and early warning of water-powered landslides and disaster emergency response capabilities; 5) a categorized emergency and comprehensive treatment technology for landslide-barrier lakes suitable to various material composition and structural characteristics of landslides and dams; 6) a complete set of methods for ecological water requirement allocation and prediction of water temperature for fish and cascade reservoirs, low-temperature water control, and prediction and regulation of over-saturated total dissolved gas of high dams aiming at characteristics of geography, ecology and environment in southwest region, which has expanded research on ecological and environmental protection from the local engineering and single water environment areas to the overall system of mountain river basins and formed an integrated scientific and technological system that intersects multiple disciplines. At last, aiming at characteristics of water disasters in mountainous rivers in Western China and the general needs for national disaster prevention, mitigation and relief, this paper proposes a series of scientific and technological questions for future research, which will facilitate development of research work in related disciplines for disaster prevention and reduction in the future. The issues include impacts of global climate change on water disasters, coupled disaster environments and regional evolution laws, dynamic processes and catastrophes of water disasters, habitat-biological interaction mechanisms of mutant rivers, ecological evolution mechanism of catastrophic rivers, water disaster risk theory, water disaster monitoring and early warning, collaborative management of water and disaster basins, basic large databases and cloud platforms, and others. © 2018, Editorial Department of Advanced Engineering Sciences. All right reserved.
AUTHOR KEYWORDS: Disaster prevention and mitigation; Ecological environment protection in river basins; Flood discharge and control safety; Mountain floods and sediment disasters; Mountain rivers; Structural safety of high dam projects; Water disasters
INDEX KEYWORDS: Dams; Deformation; Disaster prevention; Ecology; Flood control; Floods; Flow of water; Geology; Hydraulics; Hydroelectric power plants; Landforms; Landslides; Reservoirs (water); Rivers; Sediments; Shore protection; Water management; Watersheds; Dam projects; Disaster prevention and mitigations; Ecological environment protection in river basin; Ecological environment protections; Flood disaster; Flood discharge; Flood discharge and control safety; High dams; Mountain flood and sediment disaster; Mountain floods; Mountain rivers; River basins; Sediment disaster; Structural safety; Structural safety of high dam project; Water disasters; Disasters
REFERENCES: Wise Find Pleasure in Water Wisdom in Water Control and Disaster Response, (2017); 
undefined, (2016); 
undefined; 
undefined; 
undefined; 
undefined; 
Cao, Shuyou, Dujiangyan Irrigation System - a world cultural heritage corresponding to concepts of modern hydraulic science, Journal of Hydro-Environment Research, 4, 1, pp. 3-13, (2010); 
Proceedings of the International Symposium, (1988); 
Cao, Shuyou, Random characteristics of sediment-Laden flows and the techniques of effective sediment exclusion on Dujiangyan irrigation project in China, pp. 409-416, (1988); 
Xie, Shengzong, New technology and innovation on flood discharge and energy dissipation of high dams in China, Shuili Xuebao/Journal of Hydraulic Engineering, 47, 3, pp. 324-336, (2016)
PUBLISHER: Sichuan University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Pan, H.-L., Jiang, Y.-J., Wang, J., Ou, G.-Q.
AUTHOR FULL NAMES: Pan, Huali (23493786200); Jiang, Yuanjun (55838169900); Wang, Jun (57214696475); Ou, Guoqiang (8891006800)
23493786200; 55838169900; 57214696475; 8891006800
Rainfall threshold calculation for debris flow early warning in areas with scarcity of data
(2018) Natural Hazards and Earth System Sciences, 18 (5), pp. 1395 - 1409, Cited 38 times.
DOI: 10.5194/nhess-18-1395-2018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047261358&doi=10.5194%2Fnhess-18-1395-2018&partnerID=40&md5=2b942037c30a44263e8dfa75b9a2c674

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou, Guangdong, China
ABSTRACT: Debris flows are natural disasters that frequently occur in mountainous areas, usually accompanied by serious loss of lives and properties. One of the most commonly used approaches to mitigate the risk associated with debris flows is the implementation of early warning systems based on well-calibrated rainfall thresholds. However, many mountainous areas have little data regarding rainfall and hazards, specially in debris-flow-forming regions. Therefore, the traditional statistical analysis method that determines the empirical relationship between rainstorms and debris flow events cannot be effectively used to calculate reliable rainfall thresholds in these areas. After the severe Wenchuan earthquake, there were plenty of deposits deposited in the gullies, which esulted in several debris flow events. The triggering rainfall threshold has decreased obviously. To get a reliable and accurate rainfall threshold and improve the accuracy of debris flow early warning, this paper developed a quantitative method, which is suitable for debris flow triggering mechanisms in meizoseismal areas, to identify rainfall threshold for debris flow early warning in areas with a scarcity of data based on the initiation mechanism of hydraulic-driven debris flow. First, we studied the characteristics of the study area, including meteorology, hydrology, topography and physical characteristics of the loose solid materials. Then, the rainfall threshold was calculated by the initiation mechanism of the hydraulic debris flow. The comparison with other models and ith alternate configurations demonstrates that the proposed rainfall threshold curve is a function of the antecedent precipitation index (API) and 1 h rainfall. To test the proposed method, we selected the Guojuanyan gully, a typical debris flow valley that during the 2008-2013 period experienced several debris flow events, located in the meizoseismal areas of theWenchuan earthquake, as a case study. The comparison with other threshold models and configurations shows that the selected approach is the most promising starting point for further studies on debris flow early warning systems in areas with a scarcity of data. © Author(s) 2018.
INDEX KEYWORDS: debris flow; early warning system; precipitation (climatology); rainfall; rainstorm
REFERENCES: Althuwaynee, Omar F., Estimation of rainfall threshold and its use in landslide hazard mapping of Kuala Lumpur metropolitan and surrounding areas, Landslides, 12, 5, pp. 861-875, (2015); 
Armanini, Aronne, Rheological stratification in experimental free-surface flows of granular-liquid mixtures, Journal of Fluid Mechanics, 532, pp. 269-319, (2005); 
Bai, Liping, Analysis of the critical rainfall thresholds for mudflow in Beijing, Geological Bulletin of China, 27, 5, pp. 674-680, (2008); 
Baum, Rex L., Early warning of rainfall-induced shallow landslides and debris flows in the USA, Landslides, 7, 3, pp. 259-272, (2010); 
Bogaard, T. A., Invited perspectives: Hydrological perspectives on precipitation intensity-duration thresholds for landslide initiation: Proposing hydro-meteorological thresholds, Natural Hazards and Earth System Sciences, 18, 1, pp. 31-39, (2018); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Eng Geol, (1975); 
Nat Hazards Earth Syst Sci Discuss, (2017); 
Cannon, Susan H., Storm rainfall conditions for floods and debris flows from recently burned areas in southwestern Colorado and southern California, Geomorphology, 96, 3-4, pp. 250-269, (2008); 
Cao, Zhixian, Computational Dam-Break Hydraulics over Erodible Sediment Bed, Journal of Hydraulic Engineering, 130, 7, pp. 689-703, (2004)
PUBLISHER: Copernicus GmbH info@copernicus.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Yin, H., Shan, X.-J., Zhang, Y., Qu, C., Wang, Z., Liu, X., Zhang, G., Li, Y.
AUTHOR FULL NAMES: Yin, Hao (57207472205); Shan, Xianjian (7101712284); Zhang, Yingfeng (57188712777); Qu, Chunyan (8204955900); Wang, Zhenjie (35753834100); Liu, Xiaodong (57207452246); Zhang, Guohong (14010226900); Li, Yanchuan (56986733600)
57207472205; 7101712284; 57188712777; 8204955900; 35753834100; 57207452246; 14010226900; 56986733600
Rapid determination of source parameters for the 2008 Wenchuan earthquake constrained by high-rate GPS and strong motion data 高频GPS和强震仪数据在汶川地震参数快速确定中的初步应用
(2018) Acta Geophysica Sinica, 61 (5), pp. 1806 - 1816, Cited 5 times.
DOI: 10.6038/cjg2018L0527
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062560356&doi=10.6038%2Fcjg2018L0527&partnerID=40&md5=e96f36af793286582a610b3c045e216e

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China; School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong, China
ABSTRACT: High-rate GPS facilities can detect real-time surface displacement, which has many seismic applications, such as rapid determination of the epicenter locations, earthquake magnitude and intensity, and even earthquake rupture process. In this study, taking the 2008 Wenchuan earthquake as an example, we use data from 7 GPS stations to calculate the epicenter location. We find that the two epicenters determined by high-rate GPS and seismic data are ~15.7 km apart from each other, due to the difference between GPS and seismic waveforms. Comparing the high-rate GPS and accelerograms statistically shows that although GPS data and strong motion record have their own physical meanings, respectively and the peak ground motion recorded by two datasets are obviously different, the PGA, PGV and PGD in GPS data can also be used to calculate seismic intensity. In addition, we correct the baseline bias using the SMBLOC program to obtain surface displacement time series, which can be deemed as equivalent to real-time high-rate GPS data. Based on Okada dislocation and a finite fault segment model, we finally invert the static offset displacement data smoothed from the corrected and integrated strong motion displacement data by a moving window. Our inversion results show that the main seismogenic fault of the Wenchuan earthquake ruptured from southwest to northeast, which is consistent with most of other studies. Furthermore, we try to conduct it in a quasi-real-time way and to rapidly determine the earthquake rupture process of the Wenchuan earthquake. Thus, our result also shows that the first estimated magnitude can be M<inf>W</inf>7.0 as fast as 20 seconds after the origin time, that is 14:28:04. Besides, 70 seconds after the origin time the magnitude estimation of M<inf>W</inf>7.8 is stable, with the condition that the fault rupture is still going. At last, 159 seconds after the origin time, the Wenchuan event stops according to the displacement time series. The results prove that real-time surface displacement can be used to determine the magnitude and rupture direction of a major earthquake quickly and accurately. High-rate GPS will provide a good complement to the existing earthquake early warning system. © 2018, Science Press. All right reserved.
AUTHOR KEYWORDS: Epicentral location; Rapid determination of magnitude; Real time surface displacement; Rupture process; The 2008 Wenchuan earthquake
INDEX KEYWORDS: Earthquake effects; Fault slips; Global positioning system; Seismic waves; Surface measurement; Time series; Epicentral location; Epicentre location; High rate; Rapid determination of magnitude; Real time surface displacement; Real- time; Rupture process; Surface displacement; The 2008 wenchuan earthquake; Location; dislocation; earthquake magnitude; earthquake rupture; GPS; ground motion; magnitude; seismic data; Sichuan earthquake 2008; source parameters; strong motion; China; Sichuan; Wenchuan
REFERENCES: Bull Seismol Soc Am, (1978); 
Allen, Richard M., Application of real-time GPS to earthquake early warning, Geophysical Research Letters, 38, 16, (2011); 
Chinese Seismic Intensity Scale, (2020); 
Colombelli, Simona, Application of real-time GPS to earthquake early warning in subduction and strike-slip environments, Journal of Geophysical Research: Solid Earth, 118, 7, pp. 3448-3461, (2013); 
Crowell, Brendan W., Real-time inversion of GPS data for finite fault modeling and rapid hazard assessment, Geophysical Research Letters, 39, 9, (2012); 
Map of Active Tectonics in China, (2007); 
Fang, Rongxin, Epicenter and magnitude of large earthquake determined from high-rate GPS observations: A case study of the 2008 M8.0 Wenchuan earthquake, Science China Earth Sciences, 57, 7, pp. 1645-1652, (2014); 
Kuyuk, Huseyin Serdar, A global approach to provide magnitude estimates for earthquake early warning alerts, Geophysical Research Letters, 40, 24, pp. 6329-6333, (2013); 
Li, Xingxing, Real-time GNSS seismology using a single receiver, Geophysical Journal International, 198, 1, pp. 72-89, (2014); 
Journal of Geodesy and Geodynamics, (2016)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, C., Li, X., Jing, B.
AUTHOR FULL NAMES: Liu, Chen (57194537502); Li, Xiaojun (55818809900); Jing, Bingbing (57205606735)
57194537502; 55818809900; 57205606735
Real-time estimation of rupture length of earthquake source based on records of strong motion array 基于强震动台阵记录的震源破裂长度实时估测方法
(2018) Acta Seismologica Sinica, 40 (3), pp. 387 - 398, Cited 1 times.
DOI: 10.11939/jass.20170202
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060767556&doi=10.11939%2Fjass.20170202&partnerID=40&md5=2451a9f352f08701983d4a35795d7310

AFFILIATIONS: China Earthquake Administration, Beijing, China; College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China; China Earthquake Risk and Insurance Laboratory, Beijing, China
ABSTRACT: We develop a fast rupture length estimation method by using small-aperture seismic arrays beam-forming technology, and proposed a method to adjust the phase of each station. By the method the phase difference of each station can be calculated approximately, when delay of each station cannot be determined. The result of Wenchuan earthquake outline test shows that the time efficiency of this method is good, for example, at about 10 s before the arrival of peak ground acceleration, the estimation result of rupture length is about 120 km. Although this estimation has a large deviation compared with the final estimation results (about 230 km); however, from the point of view of fast earthquake warning, it still has good practical significance. By comparing with the previous research results, it is indicated that this method underestimates the rupture length in northeast direction, and the causes and possible solutions are discussed. Finally, the computational speed of the algorithm is studied, the results show that the method can meet the requirement of real-time fault rupture length estimation by parallel computing. © 2018, Acta Seismologica Sinica Press. All right reserved.
AUTHOR KEYWORDS: Beam-forming technology; Earthquake early warning; Fault rupture length; Seismic source azimuth back projection; Zigong array
INDEX KEYWORDS: early warning system; earthquake rupture; geophysical array; real time; seismic source; Sichuan earthquake 2008; strong motion
REFERENCES: undefined, (2013); 
Chinese Journal of Geophysics, (2012); 
Recent Developments in World Seismology, (2001); 
Phase Analysis on the Broad Frequency Band Digital Seismic Recording, (2014); 
Study and Application on Earthquake Early Warning, (2008); 
Tang, Hui, Site effect of topograghy on ground motions of Xishan Park of Zigong City, Zhendong yu Chongji/Journal of Vibration and Shock, 31, 8, pp. 74-79, (2012); 
Wu, Jianping, Aftershock distribution of the Ms 8.0 Wenchuan earthquake and three dimensional P-wave velocity structure in and around source region, Acta Geophysica Sinica, 52, 2, pp. 320-328, (2009); 
Technology for Earthquake Disaster Prevention, (2011); 
Array Signal Processing and Matlab Implementation, (2015); 
Zhang, Yong, Spatio-temporal rupture process of the 2008 great Wenchuan earthquake, Science in China, Series D: Earth Sciences, 52, 2, pp. 145-154, (2009)
PUBLISHER: Acta Seismologica Sinica Press dzxb79@126.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, X., Scaringi, G., Xu, Q., Zhan, W., Dai, L., Li, Y., Pei, X., Yang, Q., Huang, R.
AUTHOR FULL NAMES: Fan, Xuanmei (12752112800); Scaringi, Gianvito (56335047900); Xu, Qiang (56506033600); Zhan, Weiwei (57194511378); Dai, Lanxin (57196005924); Li, Yusheng (54400212300); Pei, Xiangjun (14058672500); Yang, Qin (57203314330); Huang, Runqiu (55835407700)
12752112800; 56335047900; 56506033600; 57194511378; 57196005924; 54400212300; 14058672500; 57203314330; 55835407700
Coseismic landslides triggered by the 8th August 2017 M s 7.0 Jiuzhaigou earthquake (Sichuan, China): factors controlling their spatial distribution and implications for the seismogenic blind fault identification
(2018) Landslides, 15 (5), pp. 967 - 983, Cited 261 times.
DOI: 10.1007/s10346-018-0960-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042176686&doi=10.1007%2Fs10346-018-0960-x&partnerID=40&md5=7d1da71875f12f78f94441d53da25361

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Clemson University College of Engineering, Computing and Applied Sciences, Clemson, SC, United States
ABSTRACT: On 8th August 2017, a magnitude M<inf>s</inf> 7.0 earthquake struck the County of Jiuzhaigou, in Sichuan Province, China. It was the third M<inf>s</inf> ≥ 7.0 earthquake in the Longmenshan area in the last decade, after the 2008 M<inf>s</inf> 8.0 Wenchuan earthquake and the 2013 M<inf>s</inf> 7.0 Lushan earthquake. The event did not produce any evident surface rupture but triggered significant mass wasting. Based on a large set of pre- and post-earthquake high-resolution satellite images (SPOT-5, Gaofen-1 and Gaofen-2) as well as on 0.2-m-resolution UAV photographs, a polygon-based interpretation of the coseismic landslides was carried out. In total, 1883 landslides were identified, covering an area of 8.11 km2, with an estimated total volume in the order of 25–30 × 106 m3. The total landslide area was lower than that produced by other earthquakes of similar magnitude with strike-slip motion, possibly because of the limited surface rupture. The spatial distribution of the landslides was correlated statistically to a number of seismic, terrain and geological factors, to evaluate the landslide susceptibility at regional scale and to identify the most typical characteristics of the coseismic failures. The landslides, mainly small-scale rockfalls and rock/debris slides, occurred mostly along two NE-SW-oriented valleys near the epicentre. Comparatively, high landslide density was found at locations where the landform evolves from upper, broad valleys to lower, deep-cut gorges. The spatial distribution of the coseismic landslides did not seem correlated to the location of any known active faults. On the contrary, it revealed that a previously-unknown blind fault segment—which is possibly the north-western extension of the Huya fault—is the plausible seismogenic fault. This finding is consistent with what hypothesised on the basis of field observations and ground displacements. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: Coseismic landslides; Jiuzhaigou earthquake; Landslide inventory; Landslide spatial distribution; Seismogenic fault
INDEX KEYWORDS: Faulting; Geophysics; Landforms; Landslides; Rock bursts; Spatial distribution; Fault identifications; Geological factors; Ground displacement; High resolution satellite images; Landslide inventories; Landslide susceptibility; Seismogenic faults; Wenchuan Earthquake; Earthquakes; active fault; earthquake epicenter; earthquake event; earthquake magnitude; earthquake rupture; earthquake trigger; fault displacement; identification method; landform; landslide; Lushan earthquake 2013; spatial distribution; SPOT; strike-slip fault; China; Longmen Mountains; Lushan [Sichuan]; Sichuan
REFERENCES: Bonini, Marco, Seismic sources and stress transfer interaction among axial normal faults and external thrust fronts in the Northern Apennines (Italy): A working hypothesis based on the 1916-1920 time-space cluster of earthquakes, Tectonophysics, 680, pp. 67-89, (2016); 
Barlow, John, Seismically-induced mass movements and volumetric fluxes resulting from the 2010 Mw=7.2 earthquake in the Sierra Cucapah, Mexico, Geomorphology, 230, pp. 138-145, (2015); 
Website, (2017); 
Chang, Ming, Spatial distribution analysis of landslides triggered by the 2013-04-20 Lushan earthquake, China, Earthquake Engineering and Engineering Vibration, 15, 1, pp. 163-171, (2016); 
In Hazarika H Kazama M Lee W Eds Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls Springer Tokyo, (2017); 
She Fa Chen, Active faulting and block movement associated with large earthquakes in the Min Shan and Longmen Mountains, northeastern Tibetan Plateau, Journal of Geophysical Research, 99, B12, pp. 24-38, (1994); 
Nat Hazards Earth Syst Sci, (2013); 
Chigira, Masahiro, Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan, Engineering Geology, 82, 4, pp. 202-221, (2006); 
Chigira, Masahiro, Geological causes and geomorphological precursors of the Tsaoling landslide triggered by the 1999 Chi-Chi earthquake, Taiwan, Engineering Geology, 68, 3-4, pp. 259-273, (2003); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Niu, X.N., Tang, H., Wu, L.
AUTHOR FULL NAMES: Niu, Xiaonan (56704267400); Tang, Hong (36816706600); Wu, Lixin (55714061400)
56704267400; 36816706600; 55714061400
Multi-satellite observation scheduling for large area disaster emergency response
(2018) International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 42 (3), pp. 1327 - 1331, Cited 6 times.
DOI: 10.5194/isprs-archives-XLII-3-1327-2018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046961784&doi=10.5194%2Fisprs-archives-XLII-3-1327-2018&partnerID=40&md5=9d6cd5cf0f27f98f70f4c1b67c54504f

AFFILIATIONS: Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing, China; Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing Normal University, Beijing, China; School of Geosciences and Info-Physics, Central South University, Changsha, Hunan, China
ABSTRACT: Timely acquiring remote sensing data is very important for rapid response to disasters. Satellite task scheduling aiming at making an optimal imaging plan, plays a key role in coordinating multiple satellites to monitor the disaster area. In the paper, to generate imaging plan dynamically according to the disaster relief, we propose a dynamic satellite task scheduling method for large area disaster response. First, an initial robust scheduling scheme is generated by a robust satellite scheduling model in which both the profit and the robustness of the schedule are simultaneously maximized. Then, we use a multi-objective optimization model to obtain a series of decomposing schemes. Based on the initial imaging plan, we propose a mixed optimizing algorithm named HA-NSGA-II to allocate the decomposing results thus to obtain an adjusted imaging schedule. A real disaster scenario, i.e., 2008 Wenchuan earthquake, is revisited in terms of rapid response using satellite resources and used to evaluate the performance of the proposed method with state-of-the-art approaches. We conclude that our satellite scheduling model can optimize the usage of satellite resources so as to obtain images in disaster response in a more timely and efficient manner. © Authors 2018. CC BY 4.0 License.
AUTHOR KEYWORDS: Area tasks; Decomposition; Disaster emergency response; Multi-objective genetic algorithm; Multi-satellite scheduling
INDEX KEYWORDS: Decomposition; Disaster prevention; Earthquakes; Genetic algorithms; Multiobjective optimization; Multitasking; Remote sensing; Satellites; Scheduling; Scheduling algorithms; 2008 wenchuan earthquakes; Area tasks; Emergency response; Multi-objective genetic algorithm; Multi-objective optimization models; Multi-satellite observations; Satellite scheduling; State-of-the-art approach; Emergency services
REFERENCES: Sun, Baolin, Satellites scheduling algorithm based on dynamic constraint satisfaction problem, 4, pp. 167-170, (2008); 
Djamila Ouelhadj, Djamila, A survey of dynamic scheduling in manufacturing systems, Journal of Scheduling, 12, 4, pp. 417-431, (2009); 
Verfaillie, Gérard, Solution reuse in dynamic constraint satisfaction problems, Proceedings of the National Conference on Artificial Intelligence, 1, pp. 307-312, (1994); 
International Archives of Photogrammetry Remote Sensing and Spatial Information Sciences, (2002); 
Wang, Junmin, Study on heuristic algorithm for dynamic scheduling problem of earth observing satellites, 1, pp. 9-14, (2007); 
Wang, Jianjiang, Towards dynamic real-time scheduling for multiple earth observation satellites, Journal of Computer and System Sciences, 81, 1, pp. 110-124, (2015); 
Qiu, Dishan, A dynamic scheduling method of earth-observing satellites by employing rolling horizon strategy, Scientific World Journal, 2013, (2013); 
Liu, Shufan, Satellite image collection modeling for large area hazard emergency response, ISPRS Journal of Photogrammetry and Remote Sensing, 118, pp. 13-21, (2016); 
Niu, Xiaonan, Imaging-Duration Embedded Dynamic Scheduling of Earth Observation Satellites for Emergent Events, Mathematical Problems in Engineering, 2015, (2015); 
Zhai, Xuejun, Robust satellite scheduling approach for dynamic emergency tasks, Mathematical Problems in Engineering, 2015, (2015)
PUBLISHER: International Society for Photogrammetry and Remote Sensing
CONFERENCE NAME: 2018 ISPRS TC III Mid-Term Symposium on Developments, Technologies and Applications in Remote Sensing
CONFERENCE DATE: 2018-05-07 through 2018-05-10
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 136130
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Tian, S., Kong, J., Fan, X., Han, P., Sun, X.
AUTHOR FULL NAMES: Tian, Shujun (36609420200); Kong, Jiming (55793897000); Fan, Xiaoyi (36668557800); Han, Peifeng (55575448100); Sun, Xinpo (36549375000)
36609420200; 55793897000; 36668557800; 55575448100; 36549375000
Series and parallel model of landslide hazard evaluation based on disaster conditions and application
(2018) Journal of Natural Disasters, 27 (2), pp. 52 - 58, Cited 4 times.
DOI: 10.13577/j.jnd.2018.0206
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052807576&doi=10.13577%2Fj.jnd.2018.0206&partnerID=40&md5=bd45aa3de0a727fb572e3900add1cb20

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Firstly, series and parallel model of landslide hazard evaluation based on disaster conditions are investigated. The disaster conditons of landslide is divided into trigger system (sufficient condition) and internal factors (necessary condition) according to the analysis of landslide occurrence principle. Landslide can occur only when the triggering factor system ( sufficient condition ) and the internal factor system ( necessary condition) are combined together. A conceptual model for landslide hazard assessment is established. According to the analysis of three essential circuit elements ( voltage, resistance and current) relationship with landslide conditions, a series and parallel mathematical model of landslide hazard evaluation is established for the first time based on disaster conditions and the definition of the algorithm. The model can characterize the occurrence principle of landslide in structure and function. Then, using the established model, the hazard of landslide in the study area is evaluated under the condition of 5∗12 Wenchuan Earthquake. Quantitative evaluation of landslide hazard in the study area is carried out through the conditons analysis of landslide triggered by 5 -12 Wenchuan Earthquake and the aid of Arc-GIS software. The evaluation results are tested by the data of landslide triggered by 5 -12 Wenchuan Earthquake, which is acquired by remote sensing interpretation and field survey. The test results show that 73.56% earthquake landslide is located in extremely high risk area or high risk area, and larger ratio of landslide area to evaluation area is also in extremely high risk area(0. 319 4) and high risk area(0. 185 0), and the ratio increases with the increase of risk level in general. In a word, the evaluation results are reasonable. © 2018 Science Press. All rights reserved.
AUTHOR KEYWORDS: Disaster conditions; Hazard evaluation; Landslide; Series and parallel model
INDEX KEYWORDS: algorithm; conceptual framework; GIS; hazard assessment; landslide; numerical model; remote sensing; Sichuan earthquake 2008
REFERENCES: Ohlmacher, Gregory C., Using multiple logistic regression and GIS technology to predict landslide hazard in northeast Kansas, USA, Engineering Geology, 69, 3-4, pp. 331-343, (2003); 
Thiery, Yannick, Landslide susceptibility assessment by bivariate methods at large scales: Application to a complex mountainous environment, Geomorphology, 92, 1-2, pp. 38-59, (2007); 
Li, Xiuzhen, A comparison of distance and Fisher discrimination methods applied to identifying potential landslides, Yantu Lixue/Rock and Soil Mechanics, 32, 1, pp. 186-192, (2011); 
Journal of Natural Disasters, (1997); 
Hydrogeology and Engineering Geology, (2013); 
Gao, Kechang, Landslide hazard evaluation of Wanzhou based on GIS information value method in the three gorges reservoir, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 25, 5, pp. 991-996, (2006); 
Qiao, Jianping, Study on landslide hazard zonation using contributing weight overlay method, Journal of Natural Disasters, 20, 2, pp. 8-13, (2011); 
Shen-Yong, R., Application of Gis-based information model on assesment of geological hazards risk, Journal of the Chengdu Institute of Technology, 28, 1, pp. 89-92, (2001); 
Li, Junxia, Landslide risk assessment based on combination weighting-unascertained measure theory, Yantu Lixue/Rock and Soil Mechanics, 34, 2, pp. 468-474, (2013); 
Journal of Lanzhou University Natural Sciences, (2014)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, X., Chen, J., Cui, P., You, Y., Hu, K., Yang, Z., Zhang, W., Li, X.-P., Wu, Y.
AUTHOR FULL NAMES: Chen, Xiaoqing (55739112600); Chen, Jiangang (56013367200); Cui, Peng (56706923500); You, Yong (35811595800); Hu, Kaiheng (55648903800); Yang, Zongji (24485723300); Zhang, Weifeng (55706462700); Li, Xinpo (56106503000); Wu, Yong (35786710400)
55739112600; 56013367200; 56706923500; 35811595800; 55648903800; 24485723300; 55706462700; 56106503000; 35786710400
Assessment of prospective hazards resulting from the 2017 earthquake at the world heritage site Jiuzhaigou Valley, Sichuan, China
(2018) Journal of Mountain Science, 15 (4), pp. 779 - 792, Cited 56 times.
DOI: 10.1007/s11629-017-4785-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045414764&doi=10.1007%2Fs11629-017-4785-1&partnerID=40&md5=36a5a84eacd7049bbc15f977da3be72f

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; CAS Center for Excellence & Innovation in Tibetan Plateau Earth System Sciences, Shantou, Beijing, China; The Youth Creative Promotion Association, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: On August 8, 2017, a Ms = 7.0 magnitude earthquake occurred in the Jiuzhaigou Valley, in Sichuan Province, China (N: 33.20°, E: 103.82°). Jiuzhaigou Valley is an area recognized and listed as a world heritage site by UNESCO in 1992. Data analysis and field survey were conducted on the landslide, collapse, and debris flow gully, to assess the coseismic geological hazards generated by the earthquake using an unmanned aerial vehicle (UAV), remote-sensing imaging, laser range finders, geological radars, and cameras. The results highlighted the occurrence of 13 landslides, 70 collapses, and 25 potential debris flow gullies following the earthquake. The hazards were classified on the basis of their size and the potential property loss attributable to them. Consequently, 14 large-scale hazards, 30 medium-sized hazards, and 64 small hazards accounting for 13%, 28%, and 59% of the total hazards, respectively, were identified. Based on the variation tendency of the geological hazards that ensued in areas affected by the Kanto earthquake (Japan), Chi-chi earthquake (Taiwan China), and Wenchuan earthquake (Sichuan China), the study predicts that, depending on the rain intensity cycle, the duration of geological hazard activities in the Jiuzhaigou Valley may last over ten years and will gradually decrease for the following five to ten years before returning to pre-earthquake levels. Thus, necessary monitoring and early warning systems must be implemented to ensure the safety of residents, workers and tourists during the construction of engineering projects and reopening of scenic sites to the public. © 2018, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
AUTHOR KEYWORDS: 2017 Jiuzhaigou earthquake; Disaster risk; Geological hazard; Jiuzhaigou Valley; Landslide; World heritage site
INDEX KEYWORDS: early warning system; earthquake event; earthquake mechanism; hazard assessment; monitoring system; remote sensing; unmanned vehicle; World Heritage Site; China; Jiuzhaigou National Park; Sichuan
REFERENCES: Chen, Tongbin, The rescue, conservation, and restoration of heritage sites in the ethnic minority areas ravaged by the Wenchuan earthquake, Frontiers of Architectural Research, 1, 1, pp. 77-85, (2012); 
Chen, Xingzhang, The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China, Journal of Mountain Science, 14, 6, pp. 1100-1112, (2017); 
Chen, Xiaoqing, Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area, Engineering Geology, 194, pp. 73-85, (2015); 
Calligaris, Chiara, First steps towards a landslide inventory map of the Central Karakoram National Park, European Journal of Remote Sensing, 46, 1, pp. 272-287, (2013); 
Chiou, Shianjin, Evaluating landslides and sediment yields induced by the chi-chi earthquake and followed heavy rainfalls along the ta-chia river, Journal of GeoEngineering, 2, 2, pp. 73-83, (2007); 
Cigna, Francesca, Geological hazards in the UNESCO World Heritage sites of the UK: From the global to the local scale perspective, Earth-Science Reviews, 176, pp. 166-194, (2018); 
Earth Science Frontiers, (2007); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Sci China Ser E, (2003); 
Research and Prevention of Debris Flow in National Parks, (2005)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, J., Mason, P.J., Bryant, E.C.
AUTHOR FULL NAMES: Liu, Jianguo (36077207500); Mason, Philippa Jane (7401794545); Bryant, Eleanor C. (57199644958)
36077207500; 7401794545; 57199644958
Regional assessment of geohazard recovery eight years after the Mw7.9 Wenchuan earthquake: a remote-sensing investigation of the Beichuan region
(2018) International Journal of Remote Sensing, 39 (6), pp. 1671 - 1695, Cited 19 times.
DOI: 10.1080/01431161.2017.1410299
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038207420&doi=10.1080%2F01431161.2017.1410299&partnerID=40&md5=256620ee4aac2592997a004513e1bbcc

AFFILIATIONS: Department of Earth Science and Engineering, Imperial College London, London, United Kingdom
ABSTRACT: The earthquake of 12 May 2008 in Wenchuan County, Sichuan Province, China, devastated the entire Beichuan region. Sitting at the intersection of the Yingxiu-Beichuan and Pengguan faults, the region experienced seismic intensities of VIII–XI on the Liedu scale. High seismic intensity combined with inherent geomorphological and climatic susceptibility to slope failure resulted in widespread co-seismic geohazards (slope failures of various types), which decimated the region. The seismic characteristics of the Wenchuan earthquake and the co-seismic geohazard distribution in relation to various conditioning factors have previously been examined in depth. However, there has been a lack of regional assessment of temporal and spatial recovery from co-seismic geohazards. Triggered by the authors’ field observation of rapid recovery, this study presents a temporal series of geohazard maps, produced by manual interpretation of satellite imagery, to present an initial assessment of changes in geohazard occurrence in the Beichuan region since the Wenchuan earthquake. In particular, landscape recovery at the co-seismic geohazard sites, as indicated by re-vegetation, is analysed based on temporal/spatial characteristics of geohazard distribution, in relation to co-seismic deformation, distance from the rupture zone and slope angle. Eight years after the Wenchuan earthquake, the overall recovery stands at 65.48%, with approximately uniform annual rates of recovery at 13.45% a year between 2009 and 2011 and 10.56% a year between 2012 and 2016. Whilst co-seismic geohazards are concentrated on the hanging wall of the seismic fault, landscape recovery is more significant in the very highly deformed zone than in other areas. Recovery has been the greatest on slopes of <50° and peaks on 40°–50° slopes, where the area occupied by co-seismic geohazards was the largest. The block-slides and rock topples, which characterize high angle slopes, show much slower recovery, possibly due to greater instability and the lack of soil to support re-vegetation. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
INDEX KEYWORDS: Faulting; Hazards; Recovery; Remote sensing; Satellite imagery; Slope stability; Vegetation; Coseismic deformation; Field observations; High seismic intensities; Initial assessment; Landscape recovery; Seismic intensity; Temporal and spatial; Wenchuan Earthquake; Earthquakes; earthquake intensity; earthquake rupture; fault; hazard assessment; mapping; remote sensing; Sichuan earthquake 2008; site effect; slope failure; spatiotemporal analysis; Beichuan; China; Sichuan; Yingxiu
REFERENCES: Chou, Wen Chieh, Vegetation recovery patterns assessment at landslides caused by catastrophic earthquake: A case study in central Taiwan, Environmental Monitoring and Assessment, 152, 1-4, pp. 245-257, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Dijkstra, Tom A., Introduction to geohazards of central China, Quarterly Journal of Engineering Geology and Hydrogeology, 47, 3, pp. 195-199, (2014); 
Dong, Yanfang, Extracting damages caused by the 2008 Ms 8.0 Wenchuan earthquake from SAR remote sensing data, Journal of Asian Earth Sciences, 40, 4, pp. 907-914, (2011); 
Ehrlich, Daniele, Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data, International Journal of Digital Earth, 2, 4, pp. 309-326, (2009); 
Fan, Xuanmei, Analysis of landslide dams induced by the 2008 Wenchuan earthquake, Journal of Asian Earth Sciences, 57, pp. 25-37, (2012); 
Feng, Guangcai, Coseismic fault slip of the 2008 Mw 7.9 Wenchuan earthquake estimated from InSAR and GPS measurements, Geophysical Research Letters, 37, 1, (2010); 
Fourniadis, Ioannis G., Landslide hazard assessment in the Three Gorges area, China, using ASTER imagery: Wushan-Badong, Geomorphology, 84, 1-2, pp. 126-144, (2007); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, G., West, A.J., Densmore, A.L., Jin, Z., Zhang, F., Wang, J., Hilton, R.G.
AUTHOR FULL NAMES: Li, Gen (56127683700); West, Alison Joshua (26538380300); Densmore, Alexander Logan (7004510678); Jin, Zhangdong (7403625767); Zhang, Fei (55195292000); Wang, Jin (58465079600); Hilton, Robert G. (24385259400)
56127683700; 26538380300; 7004510678; 7403625767; 55195292000; 58465079600; 24385259400
Distribution of earthquake-triggered landslides across landscapes: Towards understanding erosional agency and cascading hazards
(2018), pp. 160 - 190, Cited 7 times.
DOI: 10.1515/9783110560329-170
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105013909319&doi=10.1515%2F9783110560329-170&partnerID=40&md5=5859533098678ada1386770cebd5e772

AFFILIATIONS: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Institute of Hazard, Faculty of Social Sciences & Health, Durham, County Durham, United Kingdom; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Xi'an, Shaanxi, China
ABSTRACT: In mountainous regions, earthquake-triggered landslides are a critical geohazard, a major agent of erosion, and a powerful driver of the carbon cycle. How landslides are distributed across landscapes provides key information for hazard management and for better understanding of orogenic evolution and cycling of carbon. In this chapter, we study the distribution of landslides caused by the 2008 M<inf>w</inf>7.9 Wenchuan earthquake at the eastern margin of the Tibetan Plateau in the context of recent advances in understanding landslide spatial patterns. We have previously produced a Wenchuan landslide inventory by mapping landslides from remote sensing images. Combining this landslide inventory map with analysis of digital topography, regional geology, and ground motion data, we explore the controlling factors of the Wenchuan earthquake-triggered landslides. We study the locations of the Wenchuan landslides relative to river networks to evaluate how and to what extent landslides supply sediment to rivers. We examine the hillslope aspects of landslides and discuss how the preferred facing directions reveal information about earthquake source, seismic ground motion, and rupture propagation. We evaluate the distribution of landslides from hillslope tops to bases and discuss the implications for long-term evolution of hillslope morphology. Assuming that the Wenchuan seismogenic fault was a linear energy source, we can successfully model the pattern of Wenchuan landslides by adapting a functional form of the law of seismic wave attenuation which accounts for both geometric spreading and quality decay. In conjunction with models predicting total volumes of earthquake-triggered landslides, this approach has promise for predicting the magnitude and pattern of landslides caused by earthquakes based on known characteristics of the seismogenic faults and the seismotectonic, topographic, and geological setting. © 2018 Higher Education Press and Walter de Gruyter GmbH. All rights reserved.
AUTHOR KEYWORDS: Earthquake-triggered landslides; Erosional agency and cascading hazards; Fault characteristics; Fluvial network; Landslide pattern and modeling; Seismic wave attenuation equation; Surface landscape; Wenchuan earthquake
INDEX KEYWORDS: Carbon; Earthquakes; Erosion; Faulting; Hazards; Landslides; Long Term Evolution (LTE); Miocene; Remote sensing; Topography; Attenuation equation; Earthquake-triggered landslides; Erosional agency and cascading hazard; Fault characteristics; Fluvial network; Fluvials; Landslide modelling; Landslide pattern; Seismic wave attenuation equation; Seismic wave attenuations; Surface landscape; Wenchuan Earthquake; Seismic waves
REFERENCES: Bellugi, Dino G., A spectral clustering search algorithm for predicting shallow landslide size and location, Journal of Geophysical Research: Earth Surface, 120, 2, pp. 300-324, (2015); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chen, Hongey, Effects of topography, lithology, rainfall and earthquake on landslide and sediment discharge in mountain catchments of southeastern Taiwan, Geomorphology, 133, 3-4, pp. 132-142, (2011); 
Chen, Shefa, Emplacement of the Longmen Shan Thrust-Nappe Belt along the eastern margin of the Tibetan Plateau, Journal of Structural Geology, 18, 4, pp. 413-430, (1996); 
China Geological Base Map and Instructions 1 2 500 000, (2004); 
Clark, Marin Kristen, Topographic ooze: Building the eastern margin of Tibet by lower crustal flow, Geology, 28, 8, pp. 703-706, (2000); 
Clark, Kasey E., Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity, Earth Surface Dynamics, 4, 1, pp. 47-70, (2016); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Densmore, Alexander Logan, Topographic fingerprints of bedrock landslides, Geology, 28, 4, pp. 371-374, (2000)
PUBLISHER: De Gruyter
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Xiong, J., Peng, C., Fan, C., Sun, M., Liu, Z., Gong, Y.
AUTHOR FULL NAMES: Xiong, Junnan (35308196800); Peng, Chao (57202685055); Fan, Chunkun (57201301562); Sun, Ming (57207997782); Liu, Zhiqi (57202691231); Gong, Ying (57202682135)
35308196800; 57202685055; 57201301562; 57207997782; 57202691231; 57202682135
Dynamic Monitoring of Vegetation Fraction Change in Disaster Area of Wenchuan Earthquake Based on MODIS Time-series Data
(2018) Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering, 26 (1), pp. 60 - 69, Cited 8 times.
DOI: 10.16058/j.issn.1005-0930.2018.01.006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049056321&doi=10.16058%2Fj.issn.1005-0930.2018.01.006&partnerID=40&md5=d904cdc50f86e0001db623d7ac24b7eb

AFFILIATIONS: School of Civil Engineering and Architecture, Southwest Petroleum University China, Chengdu, Sichuan, China; Agricultural Research Institute of Tibet Autonomous Region, China
ABSTRACT: Based on MODIS data and the normalized difference vegetation index (NDVI), dimidiate pixel model of vegetation coverage estimation was built, then the vegetation coverage was calculated in the disaster area of Wenchuan earthquake from 2008 to 2015, and the vegetation coverage of eight phase was obtained. After the Wenchuan earthquake the damage degree of vegetation and the year by year recovery of vegetation was analyzed quantitatively. The results show: Average vegetation coverage in the earthquake-stricken area decreased significantly after the quake, the decreased level was positively related with earthquake intensity. By 2015, the average vegetation coverage has returned to the same level as before the earthquake. The vegetation coverage rate and composition in different intensity area are not the same, which the recovery in the intensity of nine degree area is fastest, and the recovery in the intensity of seven degree area is slowest. The spatial pattern of different levels of vegetation coverage has significant changed. The results has important theoretical and practical significance on the development of remote sensing vegetation monitoring theory, the ecological environment recovery of Wenchuan earthquake disaster area, disaster evaluation and soil and water conservation. © 2018, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
AUTHOR KEYWORDS: Dimidiate pixel model; Disaster area of Wenchuan Earthquake; Fractional vegetation cover(FVC); NDVI
INDEX KEYWORDS: Disasters; Pixels; Radiometers; Recovery; Remote sensing; Soil conservation; Vegetation; Water conservation; Ecological environments; Fractional vegetation cover; NDVI; Normalized difference vegetation index; Pixel models; Soil and water conservation; Vegetation monitoring; Wenchuan Earthquake; Earthquakes
REFERENCES: Principle and Method of Analysis of Remote Sensing Application, (2003); 
Resources Science, (2010); 
Journal of Beijing Normal University Natural Science, (2001); 
Advances in Earth Science, (2013); 
Journal of Geo Information Science, (2012); 
Bulletin of Soil and Water Conservation, (2001); 
Journal of Northwest A F University Natural Science Edition, (2006); 
J Yellow River Conser Tech Inst, (2013); 
Liu, Zhicai, Ecological change in the Hangzhou area using the remote sensing based ecological index, Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering, 23, 4, pp. 728-739, (2015); 
Gao, Lin, Comparison of precision in retrieving soybean leaf area index based on multi-source remote sensing data, Chinese Journal of Applied Ecology, 27, 1, pp. 191-200, (2016)
PUBLISHER: Editorial Board of Journal of Basic Science and
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shusong, L.I., Qiang, Z.O.U., Rong, C.H.E.N., Jianxi, T.A.N.G.
AUTHOR FULL NAMES: Shusong, L. I. (57222043577); Qiang, Z. O.U. (57222047243); Rong, C. H.E.N. (57222047245); Jianxi, T. A.N.G. (57222043734)
57222043577; 57222047243; 57222047245; 57222043734
Hazard assessment of debris flow in Bailong river basin
(2018) Science of Soil and Water Conservation, 16 (4), art. no. 2096-2673(2018)04-0083-06, pp. 83 - 88, Cited 1 times.
DOI: 10.16843/j.sswc.2018.04.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101159215&doi=10.16843%2Fj.sswc.2018.04.011&partnerID=40&md5=64d251107ca83555fd88027c2f1ae8d3

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China; Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: [Background] Debris flow is a widely distributed geological hazard in the mountainous area, and the hazard assessment of debris flow is essential for its prediction, risk evaluation and prevention. The Wenchuan earthquake has disturbed the geological condition of southern Gansu province,which not only produced abundant loose material to new debris flow formation but also triggered the recurrences of some debris flows in idle. The Bailong River Basin is located in the South Gansu province, where severe debris flow occurred during the Wenchuan earthquake in 2008, thus it was selected for this study. [Methods] A watershed unit was taken as the evaluation unit, and the evaluation unit was determined using GIS technology with digital elevation model (DEM) data. A debris flow hazard assessment model at watershed鄄scale was proposed based on the gradient of debris flow gully, the scale of debris flow and the level of potential river blockage. By applying the proposed hazard assessment model for Bailong River Basin, the hazard degree of debris flow was obtained as 5 levels of very high, high, moderate, low, and very low, and a hazard map of debris flows was constructed for Bailong River Basin. [ Results] The assessment results indicated that there were 2 debris flows at very low hazardous level, accounting for 1. 3% of the total debris flows, 31 debris flows (20. 7%) at low level, 60 debris flows (40%) at moderate level, 19 debris flows (12. 7%) at high level, and 38 debris flows (25. 3%) at very high level. The 117 debris flow gullies were at the moderate hazardous level or above, accounting for 78% of 150 total gullies. Validated by the field investigation and historical debris flow events, the debris flows in Luojiayu, Sanyanyu, Yuzi, liangshui and Shimen gullies were at very high hazardous level, which was consistent with the assessment result. [ Conclusions ] It is scientific to take a watershed unit as evaluation unit because it can reflect the features of valleys, topography and landform conditions when debris flow occurs. On this basis, the assessment factors are selected from the debris flow energy, source and disaster degree to establish an index system for assessing the hazard of debris flow. Through field investigations, it is confirmed that the assessment results by model are consistent with the actual situation of debris flow, thus this model may be used to predict the occurrence of debris flow in the Bailong River Basin. © 2018, Editorial Board of Science of Soil and Water Conservation. All rights reserved.
AUTHOR KEYWORDS: Bailong River Basin; Debris flow; Hazard assessment; Hydrological response unit
REFERENCES: Study on the Hazard Assessment of Debris Flow in Bailong River Basin Based on GIS D, (2010); 
Study on Fractal Characteristics of Debris Flow Disaster D, (2008); 
Lin, Jeng Wen, Kalman filter decision systems for debris flow hazard assessment, Natural Hazards, 60, 3, pp. 1255-1266, (2012); 
Fan, Linfeng, Linking rainfall-induced landslides with debris flows runout patterns towards catchment scale hazard assessment, Geomorphology, 280, pp. 1-15, (2017); 
Iverson, Richard M., Debris flows: Behaviour and hazard assessment, Geology Today, 30, 1, pp. 15-20, (2014); 
Chinese Science Bulletin, (2003); 
Journal of Mountain Science, (2013); 
Journal of Disaster Prevention and Mitigation Engineering, (2017); 
Bulletin of Soil and Water Conservation, (2014); 
Guzzetti, Fausto, Landslide hazard evaluation: A review of current techniques and their application in a multi-scale study, Central Italy, Geomorphology, 31, 1-4, pp. 181-216, (1999)
PUBLISHER: Editorial Board of Science of Soil and Water Conservation
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lei, T., Zhang, Y., Lu, J., Pang, Z., Fu, F., Kan, G., Qu, W., Wang, Y.
AUTHOR FULL NAMES: Lei, Tianjie (55557554100); Zhang, Yazhen (57195991892); Lu, Jingxuan (55795142700); Pang, Zhiguo (53064329300); Fu, Jun'E E. (23984626700); Kan, Guangyuan (55276482000); Qu, Wei (57203440399); Wang, Yang (55636308600)
55557554100; 57195991892; 55795142700; 53064329300; 23984626700; 55276482000; 57203440399; 55636308600
The application of UAV remote sensing in mapping of damaged buildings after earthquakes
(2018) Proceedings of SPIE - The International Society for Optical Engineering, 10806, art. no. 1080651, Cited 7 times.
DOI: 10.1117/12.2503163
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052641183&doi=10.1117%2F12.2503163&partnerID=40&md5=253ef4a68c27607fe102a8d073e46b71

AFFILIATIONS: State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing, Beijing, China; China Institute of Water Resources and Hydropower Research, Beijing, China
ABSTRACT: UAV (unmanned aerial vehicle) remote sensing system has advantages of strong real-time, flexible and convenient, little influence by the external environment, and the ability to work full-time. It can go deep into the places safely and reliably which staff can hardly arrived. The remote sensing system can be in response to emergencies to gain first-hand information as quickly as possible and have produced a unique emergency response to acquire an important basis for overall decision-making. However, UAV remote sensing system was so fast, flexible, low flying to carry on quick response to acquire high-resolution images. In the Wenchuan Earthquake, UAV remote sensing was applied successfully to acquire first-hand earthquake damage information in the short time under cloudy and rainy conditions of Sichuan Province. The system flow of UAV remote sensing to extract information on damaged houses after earthquake was set up successfully. Moreover, UAV remote sensing had an important role in mapping of damaged buildings after earthquake. Rapid identification of mapping of damaged buildings after earthquake with UAV remote sensing techniques can be carried out. UAV remote sensing techniques could have greater potentials for disaster mitigation and management after earthquake. © 2018 SPIE.
AUTHOR KEYWORDS: Damaged buildings; Earthquake; Mapping; Remote sensing; UAV
INDEX KEYWORDS: Antennas; Decision making; Disaster prevention; Earthquakes; Image processing; Mapping; Unmanned aerial vehicles (UAV); Disaster mitigation; External environments; Extract informations; High resolution image; Rapid identification; Remote sensing system; UAV (unmanned aerial vehicle); Wenchuan Earthquake; Remote sensing
REFERENCES: Arnold, Jeffrey L., Disaster medicine in the 21st century: Future hazards, vulnerabilities, and risk, Prehospital and Disaster Medicine, 17, 1, pp. 3-11, (2002); 
Smith, Keith, Environmental hazards: assessing risk and reducing disaster, (1992); 
Dealing with Increased Risk of Natural Disasters Challenges and Options, (2003); 
Tatham, Peter H., An investigation into the suitability of the use of unmanned aerial vehicle systems (UAVS) to support the initial needs assessment process in rapid onset humanitarian disasters, International Journal of Risk Assessment and Management, 13, 1, pp. 60-78, (2009); 
Managing Natural Disasters, (2010); 
Dong, Laigen, A comprehensive review of earthquake-induced building damage detection with remote sensing techniques, ISPRS Journal of Photogrammetry and Remote Sensing, 84, pp. 85-99, (2013); 
Saito, Keiko, Using High-Resolution Satellite Images for Post-Earthquake Building Damage Assessment: A Study Following the 26 January 2001 Gujarat Earthquake, Earthquake Spectra, 20, 1, pp. 145-169, (2004); 
Giardino, Marco, GIS and geomatics for disaster management and emergency relief: A proactive response to natural hazards, Applied Geomatics, 4, 1, pp. 33-46, (2012); 
Niethammer, Uwe, UAV-based remote sensing of the Super-Sauze landslide: Evaluation and results, Engineering Geology, 128, pp. 2-11, (2012); 
Lei, Tianjie, Application of aerial remote sensing of pilotless aircraft to disaster emergency rescue, Journal of Natural Disasters, 20, 1, pp. 178-183, (2011)
PUBLISHER: SPIE spie@spie.org
SPONSORS: International Association of Computer Science and Information Technology, Shanghai Key Laboratory of Multidimensional Information Processing
CONFERENCE NAME: 10th International Conference on Digital Image Processing, ICDIP 2018
CONFERENCE DATE: 2018-05-11 through 2018-05-14
CONFERENCE LOCATION: Shanghai
CONFERENCE CODE: 138746
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, L., Nishie, S., Uchimura, T., Huang, D.
AUTHOR FULL NAMES: Wang, Lin (55721353300); Nishie, Shunsaku (6507401117); Uchimura, Taro (7007007474); Huang, Dong (36664555400)
55721353300; 6507401117; 7007007474; 36664555400
Distributed tilt sensors for an early warning monitoring of Earthquake-induced landslides and slope failures
(2018), 2018-March, pp. 347 - 353, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049014814&partnerID=40&md5=f6d7d472f6aae057536e7885bfcf2471

AFFILIATIONS: Technology Centre, Chuo Kaihatsu Corporation, Tokyo, Japan; Saitama University, Saitama, Saitama, Japan; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: An early warning monitoring system is one of the most effective ways to reduce disasters induced by slope instabilities. The 2008 Ms 8.0 Wenchuan earthquake that occurred in Sichuan province, China, induced more than 197, 000 slope failures and landslides. Otherwise, there are more than 270, 000 potential slope failures in Japan. To reduce vulnerability to such slope and landslide hazards, a low cost that compared to a traditional instrumentation of inclinometers and extensometer, and an effective early warning system becomes important. For this purpose, a new monitoring method of distributed tilt sensors developed by authors, was adopted by local government of Japan and China This is a newly simple multi-point method of monitoring landslides and slope failures, with the intention of developing an early-warning system. Surface tilt angles of a slope are monitored using this method, which incorporates a Micro Electro Mechanical Systems (MEMS) tilt sensor and a volumetric water content sensor. This system was applied to many landslides and slopes in Japan and China recently. In several case studies, including a slope failure test conducted on a natural slope using artificial heavy rainfall, the system detected distinct tilt behavior in the slope in pre-failure stages. Based on these behaviors and a conservative approach, it is proposed that a precaution for slope failure be issued at a tilting rate of 0.01°/hr., and warning of slope failure issued at a rate of 0.1°/hr. (Uchimura et al.2015). The development of this system can occur at a significantly reduced cost compared with current and comparable monitoring methods. © 2018 China Communications Press Co. Ltd. All rights reserved.
AUTHOR KEYWORDS: Early warning; Landslide; Slope failure
INDEX KEYWORDS: Cost reduction; Earthquakes; Geotechnical engineering; Landslides; MEMS; Monitoring; Rain; Conservative approaches; Early warning; Early Warning System; Earthquake-induced landslides; Micro electromechanical system (MEMS); Slope failure; Volumetric water content; Wenchuan Earthquake; Safety engineering
REFERENCES: Uchimura, Taro, Simple monitoring method for precaution of landslides watching tilting and water contents on slopes surface, Landslides, 7, 3, pp. 351-357, (2010); 
Uchimura, Taro, Precaution and early warning of surface failure of slopes using tilt sensors, Soils and Foundations, 55, 5, pp. 1086-1099, (2015); 
Chinese Journal of Engineering Geology, (2013)
PUBLISHER: China Communications Press Co., Ltd.
CONFERENCE NAME: 7th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering, CJGS 2018
CONFERENCE DATE: 2018-03-16 through 2018-03-18
CONFERENCE LOCATION: Sanya
CONFERENCE CODE: 135696
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
A new Mw estimation parameter for use in earthquake early warning systems
(2018) Journal of Seismology, 22 (1), pp. 325 - 335, Cited 4 times.
DOI: 10.1007/s10950-017-9708-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033477111&doi=10.1007%2Fs10950-017-9708-7&partnerID=40&md5=a26ea85a1ec7c1c7b04f88960b78d1f3

AFFILIATIONS: School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: We propose a method that employs the squared displacement integral (ID2) to estimate earthquake magnitudes in real time for use in earthquake early warning (EEW) systems. Moreover, using τ<inf>c</inf> and P<inf>d</inf> for comparison, we establish formulas for estimating the moment magnitudes of these three parameters based on the selected aftershocks (4.0 ≤ M<inf>s</inf> ≤ 6.5) of the 2008 Wenchuan earthquake. In this comparison, the proposed ID2 method displays the highest accuracy. Furthermore, we investigate the applicability of the initial parameters to large earthquakes by estimating the magnitude of the Wenchuan M<inf>s</inf> 8.0 mainshock using a 3-s time window. Although these three parameters all display problems with saturation, the proposed ID2 parameter is relatively accurate. The evolutionary estimation of ID2 as a function of the time window shows that the estimation equation established with ID2Ref determined from the first 8-s of P wave data can be directly applicable to predicate the magnitudes of 8.0. Therefore, the proposed ID2 parameter provides a robust estimator of earthquake moment magnitudes and can be used for EEW purposes. © 2017, Springer Science+Business Media B.V.
AUTHOR KEYWORDS: Earthquake early warning; Initial P wave; Large earthquake; Moment magnitude estimation
INDEX KEYWORDS: displacement; early warning system; earthquake magnitude; P-wave; parameter estimation; real time; seismic moment; Sichuan earthquake 2008
REFERENCES: Quantitative Seismology, (2002); 
Aki, Keiiti, Earthquake mechanism, Tectonophysics, 13, 1-4, pp. 423-446, (1972); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Bernard, Pascal, High‐frequency seismic radiation from a buried circular fault, 78, 1, pp. 1-17, (1984); 
Cauzzi, Carlo, An open-source earthquake early warning display, Seismological Research Letters, 87, 3, pp. 737-742, (2016); 
Colombelli, Simona, Evidence for a difference in rupture initiation between small and large earthquakes, Nature Communications, 5, (2014); 
Colombelli, Simona, A P wave-based, on-site method for earthquake early warning, Geophysical Research Letters, 42, 5, pp. 1390-1398, (2015); 
Colombelli, Simona, Early magnitude and potential damage zone estimates for the great Mw 9 Tohoku-Oki earthquake, Geophysical Research Letters, 39, 22, (2012); 
Erdik, Mustafa O., Istanbul earthquake rapid response and the early warning system, Bulletin of Earthquake Engineering, 1, 1, pp. 157-163, (2003)
PUBLISHER: Springer Netherlands
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lin, Q., Liu, Y., Liu, L., Wang, Y.
AUTHOR FULL NAMES: Lin, Qigen (57111276500); Liu, Yanyi (57672948300); Liu, Lianyou (7405254909); Wang, Ying (57112777300)
57111276500; 57672948300; 7405254909; 57112777300
Earthquake-triggered Landslide Susceptibility Assessment Based on Support Vector Machine Combined with Newmark Displacement Model 支持向量机与Newmark模型结合的地震滑坡易发性评估研究
(2017) Journal of Geo-Information Science, 19 (12), pp. 1623 - 1633, Cited 8 times.
DOI: 10.3724/SP.J.1047.2017.01623
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129771453&doi=10.3724%2FSP.J.1047.2017.01623&partnerID=40&md5=a98cc41834694fa862a2c9fff71e583c

AFFILIATIONS: Beijing Normal University, Beijing, China; Beijing Normal University, Beijing, China
ABSTRACT: The Newmark displacement model is a common physically based model for earthquake induced landslide susceptibility mapping. The machine learning model is one of the statistical methods and is increasingly applied to landslide susceptibility mapping in recent years. The main purpose of this paper is to combine the Newmark displacement method with machine learning model for developing a mechanism-based earthquake-induced landslide susceptibility model and improving the predictive accuracy. The support vector machine (SVM) method was selected and eight thematic data layers, including landslide inventory, topographic relief, slope, curvature, Newmark displacement value, distance from faults, distance from drainages and distance from roads, were prepared in GIS. A total of 1, 900 landslides were subsequently randomly divided into two subsets: a training subset comprising 70% of the landslides and a validation subset containing the remaining 30%. The model is then applied to Wenchuan County, which was one of the most severely affected areas during the May 12, 2008 (Mw 7.9) Wenchuan earthquake in China. The model performance was evaluated using the receiver operation characteristic (ROC) curve and the model estimation uncertainty in comparison with the other two statistical methods: frequency ratio (FR) bivariate statistical model and the logistic regression (LR) multivariate statistical model. The results show that five variables including topographic relief, Newmark displacement value, distance from faults, distance from drainages and distance from roads are finally selected based on a significance level of 0.05 and the multi-collinearity detection. The values of the area under the ROC curve (AUC) demonstrate that the SVM model exhibited the highest accuracy for the training and validation data sets with AUC values of 0.876 and 0.851, respectively, followed by the LR model (AUC values of 0.836 and 0.842 for training and validation, respectively) and FR model (AUC values of 0.844 and 0.808 for training and validation, respectively). For the evaluation of the model prediction uncertainties, the pixels classified as high susceptibility (probability ≥ 0.75) and low susceptibility (probability < 0.25) are more valuable and practical, both of which have high reliability to determine whether the location is stable. The prediction variation is low for pixels classified as high susceptibility and low susceptibility (with an average of the standard deviation less than 0.05), indicating that the SVM and LR models consistently identified these pixels as stable or unstable. Furthermore, these high and low susceptibility pixels account for about 70% of all pixels for the SVM model, which is about 25% higher than that of LR model. It means that the SVM model performs better than the LR model in these high reliability pixels. For the pixels classified as intermediate susceptibility (probability 0.25 ~ 0.75), the standard deviation of the predictive probability of the SVM model is about 0.09, which is larger than that of the LR model. It indicates that the SVM model exhibited larger uncertainty than the LR model in these intermediate susceptibility pixels. However, it is difficult to determine whether these pixels are stable or not. Also, the pixels with intermediate susceptibility only account for about 30% of the total samples for the SVM model. In general, the SVM model combined with the Newmark displacement method outperform the LR model in accuracy and uncertainty evaluation. The proposed method was applied to produce the earthquake-triggered landslide susceptibility map of Wenchuan County. The comparison of landslide susceptibility map and actual landslide distribution showed that the high susceptibility areas can account for about 80.4% of the actual landslides. This indicates that the combination of support vector machine and the Newmark displacement method has a higher predictive value. The proposed method can potentially help risk assessment and effective management of landslides caused by earthquakes. © 2017, Science Press. All right reserved.
AUTHOR KEYWORDS: Earthquake-triggered landslides; Landslide susceptibility assessment; Machine learning; Newmark displacement model; Support vector machine
REFERENCES: Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Jibson, Randall W., Regression models for estimating coseismic landslide displacement, Engineering Geology, 91, 2-4, pp. 209-218, (2007); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Huang, Runqiu, Mechanism and geomechanical modes of landslide hazards triggered by Wenchuan 8.0 earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, 6, pp. 1239-1249, (2009); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Dai, Fuchu, Landslide risk assessment and management: An overview, Engineering Geology, 64, 1, pp. 65-87, (2002); 
Corominas, Jordi, Recommendations for the quantitative analysis of landslide risk, Bulletin of Engineering Geology and the Environment, 73, 2, pp. 209-263, (2014); 
Ayalew, Lulseged, Landslide susceptibility mapping using GIS-based weighted linear combination, the case in Tsugawa area of Agano River, Niigata Prefecture, Japan, Landslides, 1, 1, pp. 73-81, (2004); 
Kayastha, Prabin, Application of the analytical hierarchy process (AHP) for landslide susceptibility mapping: A case study from the Tinau watershed, west Nepal, Computers and Geosciences, 52, pp. 398-408, (2013); 
van den Eeckhaut, Miet, Comparison of two landslide susceptibility assessments in the Champagne-Ardenne region (France), Geomorphology, 115, 1-2, pp. 141-155, (2010)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, B., Wang, L.
AUTHOR FULL NAMES: Tian, Bingwei (24376970400); Wang, Ling (59088927700)
24376970400; 59088927700
Spatial-Temporal patterns of vagetation damage and recovery after the wenchuan earthquake
(2017) International Geoscience and Remote Sensing Symposium (IGARSS), 2017-July, art. no. 8128316, pp. 5759 - 5762, Cited 0 times.
DOI: 10.1109/IGARSS.2017.8128316
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041847380&doi=10.1109%2FIGARSS.2017.8128316&partnerID=40&md5=8f5df2c66f938b31790255495d1026aa

AFFILIATIONS: Institute for Disaster Management and Reconstruction Sichuan, Chengdu University, Chengdu, Sichuan, China; Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Sichuan Normal University, Chengdu, Sichuan, China
ABSTRACT: Spatial heterogeneity is a universal phenomenon that exits in ecological systems. In addition, it is one structural feature of ecological systems. Hence, quantification of spatial heterogeneity can examine structure of ecological systems. The Wenchuan earthquake triggered cascading disasters of landslides and debris flows that caused severe vegetation damage. Besides detecting the change, the magnitude of such change is also need to be examined. Remote sensing and geographic information system techniques were used to produce landscape maps before and after the earthquake and analyze the spatial-temporal change of vegetation pattern. Landscape metrics were selected to quantify spatial heterogeneity in categorical map in both class-level and landscape-level. Results reveal that the Wenchuan earthquake increased the heterogeneity seriously in the study area; it is obviously embodied in forests, which got the most fragmentation among all the landscape component types. © 2017 IEEE.
AUTHOR KEYWORDS: Earthquake; Landscape; Semivariogram; Spatial heterogeneity
REFERENCES: Li, Habin, A simulation experiment to quantify spatial heterogeneity in categorical maps, Ecology, 75, 8, pp. 2446-2455, (1994); 
Quantitative Methods in Landscape Ecology, (1991); 
Burrough, Peter A.B., Principles of geographical information systems for land resources assessment, Geocarto International, 1, 3, (1986); 
Garrigues, Sébastien, Quantifying spatial heterogeneity at the landscape scale using variogram models, Remote Sensing of Environment, 103, 1, pp. 81-96, (2006); 
O'Neill, Robert V., Indices of landscape pattern, Landscape Ecology, 1, 3, pp. 153-162, (1988); 
Ecological Heterogeneity, (1991); 
Illinois Natural History Survey Special Publication, (1984); 
Landscape Ecology, (1986); 
Brown, Daniel G., Predicting vegetation types at treeline using topography and biophysical disturbance variables, Journal of Vegetation Science, 5, 5, pp. 641-656, (1994); 
Computer Software Program, (2002)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: IEEE Geoscience and Remote Sensing Society (GRSS)
CONFERENCE NAME: 37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
CONFERENCE DATE: 2017-07-23 through 2017-07-28
CONFERENCE LOCATION: Fort Worth
CONFERENCE CODE: 133497
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, T., Jin, X., Wei, Y., Huang, Y.
AUTHOR FULL NAMES: Wang, Tianyun (57200005079); Jin, Xing (36681350800); Wei, Yongxiang (23978816600); Huang, Yandan (57200007136)
57200005079; 36681350800; 23978816600; 57200007136
Real-time numerical shake prediction and updating for earthquake early warning
(2017) Earthquake Science, 30 (5-6), pp. 251 - 267, Cited 4 times.
DOI: 10.1007/s11589-017-0195-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038613266&doi=10.1007%2Fs11589-017-0195-2&partnerID=40&md5=1db7520d4bb0773e1b23211db6868b02

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Beijing, China; Fujian Earthquake Agency, Fuzhou, Fujian, China
ABSTRACT: Ground motion prediction is important for earthquake early warning systems, because the region’s peak ground motion indicates the potential disaster. In order to predict the peak ground motion quickly and precisely with limited station wave records, we propose a real-time numerical shake prediction and updating method. Our method first predicts the ground motion based on the ground motion prediction equation after P waves detection of several stations, denoted as the initial prediction. In order to correct the prediction error of the initial prediction, an updating scheme based on real-time simulation of wave propagation is designed. Data assimilation technique is incorporated to predict the distribution of seismic wave energy precisely. Radiative transfer theory and Monte Carlo simulation are used for modeling wave propagation in 2-D space, and the peak ground motion is calculated as quickly as possible. Our method has potential to predict shakemap, making the potential disaster be predicted before the real disaster happens. 2008 M<inf>S</inf>8.0 Wenchuan earthquake is studied as an example to show the validity of the proposed method. © 2017, The Author(s).
AUTHOR KEYWORDS: 2-D space model; Data assimilation; Radiative transfer theory; Real-time numerical shake prediction; Shakemap prediction
REFERENCES: Alçik, Hakan A., A study on warning algorithms for Istanbul earthquake early warning system, Geophysical Research Letters, 36, 5, (2009); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Chin J Geophys, (2009); 
Font, Yvonne, Hypocentre determination offshore of eastern Taiwan using the maximum intersection method, Geophysical Journal International, 158, 2, pp. 655-675, (2004); 
Early Warning for Geological Disasters, (2014); 
Gusev, Alexander A., Monte-Carlo simulation of record envelope of a near earthquake, Physics of the Earth and Planetary Interiors, 49, 1-2, pp. 30-36, (1987); 
Hartzell, Stephen H., Rupture history of the 2008 mw 7.9 wenchuan, china, earthquake: Evaluation of separate and joint inversions of geodetic, teleseismic, and strong-motion data, Bulletin of the Seismological Society of America, 103, 1, pp. 353-370, (2013); 
Hoshiba, Mitsuyuki, Separation of scattering attenuation and intrinsic absorption in Japan using the multiple lapse time window analysis of full seismogram envelope, Journal of Geophysical Research, 98, B9, pp. 15-824, (1993); 
Hoshiba, Mitsuyuki, Estimation of nonisotropic scattering in western Japan using coda wave envelopes: application of a multiple nonisotropic scattering model, Journal of Geophysical Research, 100, B1, pp. 645-657, (1995)
PUBLISHER: Seismological Society of China
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Liu, F.Z., Xu, Q., Dong, X., Yu, B., Frost, J.D., Li, H.J.
AUTHOR FULL NAMES: Liu, Fangzhou (56799398200); Xu, Qiang (56506033600); Dong, Xiujun (15758927100); Yu, Bin (37058094800); Frost, James David (15728987200); Li, Huajin (55774725300)
56799398200; 56506033600; 15758927100; 37058094800; 15728987200; 55774725300
Design and performance of a novel multi-function debris flow mitigation system in Wenjia Gully, Sichuan
(2017) Landslides, 14 (6), pp. 2089 - 2104, Cited 46 times.
DOI: 10.1007/s10346-017-0849-0
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025802582&doi=10.1007%2Fs10346-017-0849-0&partnerID=40&md5=183c934f009b280891f89f3f3965557b

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; College of Engineering, Atlanta, GA, United States
ABSTRACT: The post-earthquake debris flows in the Wenjia Gully led to the exposure of the shortcomings in the design of the original conventional debris flow mitigation system. A predicament for the Wenjia mitigation system is a large amount of loose material (est. 50 × 106 m3) that has been deposited in the gully by the co-seismic landslide, providing abundant source material for debris flows under saturation. A novel design solution for the replacement mitigation system was proposed and constructed, and has exhibited excellent performance and resilience in subsequent debris flows. The design was governed by the three-phase philosophy of controlling water, sediment, and erosion. An Early Warning System (EWS) for debris flow that uses real-time field data was developed; it issues alerts based on the probabilistic and empirical correlations between rainfall and debris flows. This two-fold solution reduces energy of the debris flow by combining different mitigation measures while minimizing the impact through event forecasting and rapid public information sharing. Declines in the number and size of debris flows in the gully, with increased corresponding rainfall thresholds and mean rainfall intensity-duration (I-D) thresholds, indicate the high efficacy of the new mitigation system and a lowered debris flow susceptibility. This paper reports the design of the mitigation system and analyzes the characteristics of rainfall and debris flow events that occurred before and after implementation of the system; it evaluates the effectiveness of one of the most advanced debris flow mitigation systems in China. © 2017, Springer-Verlag GmbH Germany.
AUTHOR KEYWORDS: Co-seismic landslide; Debris flow; Early Warning System; Wenchuan Earthquake; Wenjia mitigation system
INDEX KEYWORDS: Earthquakes; Landforms; Landslides; Rain; Debris flows; Early Warning System; Mitigation systems; Seismic landslides; Wenchuan Earthquake; Debris; coseismic process; debris flow; early warning system; precipitation intensity; rainfall; seismic design; China; Sichuan
REFERENCES: Analisi Dei Debris Flow in Alcuni Bacini Campione Dell Alta Valle Di Susa, (1999); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Proc 8th Int Symp on Landslides, (2000); 
California Geology, (1985); 
Debris Flow Hazards and Related Phenomena, (2005); 
Cannon, Susan H., Storm rainfall conditions for floods and debris flows from recently burned areas in southwestern Colorado and southern California, Geomorphology, 96, 3-4, pp. 250-269, (2008); 
Proceedings Interpraevent Int Symp Bern, (1992); 
Chen, Chienyuan, Rainfall duration and debris-flow initiated studies for real-time monitoring, Environmental Geology, 47, 5, pp. 715-724, (2005); 
Chen, Jinnchyi, Variability of impact of earthquake on debris-flow triggering conditions: Case study of Chen-Yu-Lan watershed, Taiwan, Environmental Earth Sciences, 64, 7, pp. 1787-1794, (2011); 
Chen, Jinnchyi, Characteristics of rainfall triggering of debris flows in the Chenyulan watershed, Taiwan, Natural Hazards and Earth System Sciences, 13, 4, pp. 1015-1023, (2013)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Z., Shao, W., Qiao, J., Huang, D., Tian, H., Lei, X., Uchimura, T.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Shao, Wei (57653099800); Qiao, Jianping (24485090400); Huang, Dong (36664555400); Tian, Hongling (14520009600); Lei, XiaoQin (56368562800); Uchimura, Taro (7007007474)
24485723300; 57653099800; 24485090400; 36664555400; 14520009600; 56368562800; 7007007474
A multi-source earlywarning system of MEMS based wirelessmonitoring for rainfall-induced landslides
(2017) Applied Sciences (Switzerland), 7 (12), art. no. 1234, Cited 30 times.
DOI: 10.3390/app7121234
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035765974&doi=10.3390%2Fapp7121234&partnerID=40&md5=b79267a5d8be027b6d6e1fced179156c

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; College of Hydrometeorology, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China; Department of Civil & Environmental Engineering, Saitama University, Saitama, Saitama, Japan
ABSTRACT: Landslide monitoring and early warning systems are the most successful countermeasures to reduce fatalities and economic losses from landslide hazards. The traditional strategies such as GPS and extensometers are relatively expensive and difficult to be installed in steep, high mountains. In this study, a MEMS (Micro Electro Mechanical Systems) based multivariate wireless monitoring sensor unit was used to build a monitoring and early warning system for rainfall-triggered landslides, as one of the most practical and cost-effective countermeasures for hard-reached mountains. The multi-source wireless monitoring system and its well-developed equipment were tested in a landslide-prone slope to monitor the triggering of landslides and debris flows in the Wenchuan earthquake region, China. The variations of several state variables were observed, including the soil moisture content, soil matric suction, rainfall, inclination and ground vibration. The results of a slope stability analysis were benchmarked with the in situ measurements to identify the multivariate early warning parameters for rainfall-induced landslides. The proposed early warning system for the slope stability analysis can provide a more accurate prediction for rainfall-induced landslides and debris flows in earthquake hit regions. © 2017 by the authors.
AUTHOR KEYWORDS: Cost-effectiveequipment; Multivariate thresholds; Portable sensor unit; Rainfall-induced landslides; Wireless early warning system
REFERENCES: Arosio, Diego, Towards rockfall forecasting through observing deformations and listening to microseismic emissions, Natural Hazards and Earth System Sciences, 9, 4, pp. 1119-1131, (2009); 
Fan, Yongbo, Real-time monitoring instrument designed for the deformation and sliding period of colluvial landslides, Bulletin of Engineering Geology and the Environment, 76, 3, pp. 829-838, (2017); 
Segalini, Andrea, Automated inclinometer monitoring based on micro electro-mechanical system technology: Applications and verification, pp. 595-600, (2014); 
Pumo, Dario, The SESAMO early warning system for rainfall-triggered landslides, Journal of Hydroinformatics, 18, 2, pp. 256-276, (2016); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Lu, Ning, Hillslope hydrology and stability, pp. 1-453, (2011); 
Godt, Jonathan W., Landsliding in partially saturated materials, Geophysical Research Letters, 36, 2, (2009); 
Iverson, Richard M., Landslide triggering by rain infiltration, Water Resources Research, 36, 7, pp. 1897-1910, (2000); 
Iverson, Richard M., Debris-flow mobilization from landslides, Annual Review of Earth and Planetary Sciences, 25, pp. 85-138, (1997); 
Journal of Engineering Geology, (2011)
PUBLISHER: MDPI AG membranes@mdpi.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Xu, Q., Li, W., Dong, X., Xiao, X., Fan, X., Pei, X.
AUTHOR FULL NAMES: Xu, Qiang (56506033600); Li, Weile (25936551300); Dong, Xiujun (15758927100); Xiao, Xianxuan (57193614182); Fan, Xuanmei (12752112800); Pei, Xiangjun (14058672500)
56506033600; 25936551300; 15758927100; 57193614182; 12752112800; 14058672500
The Xinmocun landslide on June 24, 2017 in Maoxian, Sichuan: characteristics and failure mechanism
(2017) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 36 (11), pp. 2612 - 2628, Cited 118 times.
DOI: 10.13722/j.cnki.jrme.2017.0855
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045431398&doi=10.13722%2Fj.cnki.jrme.2017.0855&partnerID=40&md5=a2b99bf4135df7879db23f51f0b6d5e5

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A large scale bedding landslide occurred in Xinmo village, Diexi town, Maoxian county, Sichuan at about 6:00 pm on June 24, 2017. The rock mass with the volume of 450×104 m3 destroyed the whole Xinmo village, resulted in the death of 10 people and missing of 73 people. This paper presents a comprehensive analysis on the dynamic process and failure mechanism of the landslide based on the site investigation, satellite remote-sensing(RS), Unmanned Aerial Vehicle(UAV) photography, Ground Based Synthetic Aperture Radar (GBSAR) monitoring and other technologies. The preliminary study suggested that the rock masses of the source area were shattered and tension cracks were formed due to the shaking of the Diexi Earthquake in 1993. The shattered rock masses suffered from the subsequent strong earthquakes(such as 1976 Pingwu Earthquake and 2008 Wenchuan earthquake) and long-term effects of gravity and rainfall, which eventually resulted in the failure of the rock masses. The movement of the landslide lasted for 2 minutes in which the main landslide lasted for only 60 seconds with the runout of 2.6 km and the maximum speed of 74.6 m/s, a typical high speed and long runout landslide-debris flow. Because of the characteristics of high position and high concealment, this kind landslide is difficult to be detected with the traditional investigation methods. It is suggested that the high accuracy Earth Observation Technology(such as InSAR, LiDAR, UAV) should be promoted and applied to detect and prevent such high concealed landslides at high position in southwestern mountain areas. © 2017, Science Press. All right reserved.
AUTHOR KEYWORDS: Concealment; Early detection; Earth observation technique; High position landslide; Potential geohazard; Slope engineering; Xinmocun landslide
INDEX KEYWORDS: Antennas; Earthquakes; Failure (mechanical); Gravitation; Landslides; Observatories; Optical radar; Remote sensing; Rock mechanics; Rocks; Rural areas; Synthetic aperture radar; Unmanned aerial vehicles (UAV); 2008 wenchuan earthquakes; Concealment; Earth observation techniques; Earth Observation Technology; Geo hazards; Ground-based synthetic aperture radars; Satellite remote sensing; Slope engineering; Slope protection
REFERENCES: Earthquake Research in China, (1991); 
Catastrophic Landslide in China, (2009); 
Emergency Investigation Assessment Report of the 6·24 Landslide in Songpinggou, (2017); 
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Seismological Geomagnetic Observation and Research, (2015); 
Brideau, Marc André, Stability analysis of the 2007 Chehalis lake landslide based on long-range terrestrial photogrammetry and airborne LiDAR data, Landslides, 9, 1, pp. 75-91, (2012); 
Jaboyedoff, Michel, Use of LIDAR in landslide investigations: A review, Natural Hazards, 61, 1, pp. 5-28, (2012); 
Monserrat, Oriol, Non-interferometric GB-SAR measurement: Application to the Vallcebre landslide (eastern Pyrenees, Spain), Natural Hazards and Earth System Sciences, 13, 7, pp. 1873-1887, (2013); 
undefined, (2017)
PUBLISHER: Academia Sinica kjwang@public.wh.hb.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, Z., Qiao, J., Huang, D., Uchimura, T., Wang, L.
AUTHOR FULL NAMES: Yang, Zongji (24485723300); Qiao, Jianping (24485090400); Huang, Dong (36664555400); Uchimura, Taro (7007007474); Wang, Lin (55721353300)
24485723300; 24485090400; 36664555400; 7007007474; 55721353300
Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
(2017) Sains Malaysiana, 46 (11), pp. 2029 - 2034, Cited 2 times.
DOI: 10.17576/jsm-2017-4611-02
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040230755&doi=10.17576%2Fjsm-2017-4611-02&partnerID=40&md5=0bc3d0772f5417312657234be18bf74b

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Department of Civil Engineering, The University of Tokyo, Tokyo, Japan; Chuo Kaihatsu Corporation, Tokyo, Japan
ABSTRACT: Prevention and mitigation of rainfall induced geological hazards after the Ms=8 Wenchuan earthquake on May 12th, 2008 were significant for rebuild of earthquake hit regions. After the Wenchuan earthquake, there were tens of thousands of fractured slopes which were broken and loosened by the ground shaking, they were very susceptible to heavy rainfall and change forms into potential debris flows. In order to carry out this disaster reduction and prediction effectively in Longmenshan region, careful real-Time monitoring and pre-warning of mountain hazards in both regional and site-specific scales is reasonable as alternatives in Wenchuan earthquake regions. For pre-warning the failure of fractured slopes induced by rainfall, the threshold value or the critical value of the precipitation of hazards should be proposed. However, the identification of critical criterion and parameters to pre-warning is the most difficult issue in mountainous hazards monitoring and pre-warning system especially in the elusive and massive fractured slopes widespread in Wenchuan earthquake regions. In this study, a natural coseismic fractured landslide in the Taziping village, Hongkou County, Dujianyan City, was selected to conduct the field experimental test, in order to identify the threshold parameters and critical criterion of the fractured slopes of Taziping. After the field experimental test, the correlation of rainfall intensity, rainfall duration and rainfall intensity was investigated. The field experimental test was capable of identifying the threshold factors for failure of rainfall-induced fractured slopes after the giant earthquake.
AUTHOR KEYWORDS: Fractured slopes; Giant earthquake; Rainfall induced; Threshold factors
INDEX KEYWORDS: debris flow; early warning system; fracture; ground motion; precipitation intensity; rainfall; Sichuan earthquake 2008; slope failure; threshold; China; Dujiangyan; Longmen Mountains; Sichuan
REFERENCES: Hayat, Tasawar, MHD mixed convection peristaltic flow with variable viscosity and thermal conductivity, Sains Malaysiana, 43, 10, pp. 1583-1590, (2014); 
Huang, Chingchuan, Experimental investigation of rainfall criteria for shallow slope failures, Geomorphology, 120, 3-4, pp. 326-338, (2010); 
Huang, Dong, Research and application of landslide real-time monitoring system based on unsaturated soil mechanics, Disaster Advances, 3, 4, pp. 99-104, (2010); 
Malaysian Journal of Geosciences, (2017); 
Journal of Engineering Geology, (2009); 
Geological Behavior, (2017); 
Tian, Hongling, Benefit-cost analysis of geological disaster mitigation and example1, Disaster Advances, 3, 4, pp. 163-165, (2010); 
Proceedings of Indian Geotechnical Conference, (2011); 
Proceedings of the Second World Landslide Forum, (2011); 
Uchimura, Taro, Simple monitoring method for precaution of landslides watching tilting and water contents on slopes surface, Landslides, 7, 3, pp. 351-357, (2010)
PUBLISHER: Penerbit Universiti Kebangsaan Malaysia penerbit@ukm.my
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Cao, B., Yang, S., Ye, S.
AUTHOR FULL NAMES: Cao, Bo (55177538500); Yang, Shengmei (35176860500); Ye, Song (56654465000)
55177538500; 35176860500; 56654465000
Integrated application of remote sensing, GIS and hydrological modeling to estimate the potential impact area of earthquake-induced dammed lakes
(2017) Water (Switzerland), 9 (10), art. no. 777, Cited 3 times.
DOI: 10.3390/w9100777
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031428581&doi=10.3390%2Fw9100777&partnerID=40&md5=9c3f83d90e656bad32d540997d8190a9

AFFILIATIONS: Changjiang River Scientific Research Institute, Wuhan, Hubei, China
ABSTRACT: Dammed lakes are an important secondary hazard caused by earthquakes. They can induce further damage to nearby humans. Current hydrology calculation research on dammed lakes usually lacks spatial expressive ability and cannot accurately conduct impact assessment without the support of remote sensing, which obtains important characteristic information of dammed lakes. The current study aims to address the issues of the potential impact area estimate of earthquake-induced dammed lakes by combining remote sensing (RS), a geographic information system (GIS), and hydrological modeling. The Tangjiashan dammed lake induced by the Wenchuan earthquake was selected as the case for study. The elevation-versus-reservoir capacity curve was first calculated using the seed-growing algorithm based on digital elevation model (DEM) data. The simulated annealing algorithm was applied to train the hydrological modeling parameters according to the historical hydrologic data. Then, the downstream water elevation variational process under different collapse capacity conditions was performed based on the obtained parameters. Finally, the downstream potential impact area was estimated by the highest water elevation values at different hydrologic sections. Results show that a flood with a collapse elevation of at least 680 m will impact the entire downstream region of Beichuan town. We conclude that spatial information technology combined with hydrological modeling can accurately predict and demonstrate the potential impact area with limited data resources. This paper provides a better guide for future immediate responses to dammed lake hazard mitigation. © 2017 by the authors.
AUTHOR KEYWORDS: Earthquake-induced dammed lakes; Estimate; Flood; GIS; Hydrological modeling; Potential impact area; RS
INDEX KEYWORDS: Earthquakes; Floods; Geophysics; Hazards; Hydrology; Lakes; Remote sensing; Reservoirs (water); Simulated annealing; Surveying; Digital elevation model; Estimate; Hydrological modeling; Integrated applications; Potential impact areas; Simulated annealing algorithms; Spatial information technologies; Wenchuan Earthquake; Geographic information systems; algorithm; digital elevation model; elevation; estimation method; flood; geological hazard; GIS; hydrological modeling; induced response; information technology; integrated approach; lake; remote sensing; Sichuan earthquake 2008; simulated annealing; spatial analysis; Beichuan; China; Sichuan
REFERENCES: McKillop, Robin J., Statistical, remote sensing-based approach for estimating the probability of catastrophic drainage from moraine-dammed lakes in southwestern British Columbia, Global and Planetary Change, 56, 1-2, pp. 153-171, (2007); 
Zhou, Jia-wen, Dynamic process analysis for the formation of Yangjiagou landslide-dammed lake triggered by the Wenchuan earthquake, China, Landslides, 10, 3, pp. 331-342, (2013); 
Feyisa, Gudina Legese, Automated Water Extraction Index: A new technique for surface water mapping using Landsat imagery, Remote Sensing of Environment, 140, pp. 23-35, (2014); 
Schumann, Guy Jean Pierre, The accuracy of sequential aerial photography and SAR data for observing urban flood dynamics, a case study of the UK summer 2007 floods, Remote Sensing of Environment, 115, 10, pp. 2536-2546, (2011); 
Sheng, Yongwei, Quantitative dynamic flood monitoring with NOAA AVHRR, International Journal of Remote Sensing, 22, 9, pp. 1709-1724, (2001); 
Journal of Applied Remote Sensing, (2012); 
Hess, (2010); 
Jain, Sanjay Kumar, Flood inundation mapping using NOAA AVHRR data, Water Resources Management, 20, 6, pp. 949-959, (2006); 
Lu, Shanlong, Water body mapping method with HJ-1A/B satellite imagery, International Journal of Applied Earth Observation and Geoinformation, 13, 3, pp. 428-434, (2011); 
Ouma, Yashon O., A water index for rapid mapping of shoreline changes of five East African Rift Valley lakes: An empirical analysis using Landsat TM and ETM+ data, International Journal of Remote Sensing, 27, 15, pp. 3153-3181, (2006)
PUBLISHER: MDPI AG Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Guo, X., Cui, P., Marchi, L., Ge, Y.
AUTHOR FULL NAMES: Guo, Xiaojun (55636231600); Cui, Peng (56706923500); Marchi, Lorenzo (7005072819); Ge, Yonggang (26039083000)
55636231600; 56706923500; 7005072819; 26039083000
Characteristics of rainfall responsible for debris flows in Wenchuan Earthquake area
(2017) Environmental Earth Sciences, 76 (17), art. no. 596, Cited 29 times.
DOI: 10.1007/s12665-017-6940-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028381868&doi=10.1007%2Fs12665-017-6940-y&partnerID=40&md5=a21eec3bd9935fb926e8d70c595b5902

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; CAS Center for Excellence & Innovation in Tibetan Plateau Earth System Sciences, Shantou, Beijing, China; Consiglio Nazionale delle Ricerche, Rome, RM, Italy
ABSTRACT: The ability to forecast debris flows is important because of their frequent occurrence and potential for large-scale damage in the Wenchuan Earthquake-hit area. Accurate understanding of the characteristics of rainfall responsible for triggering debris flows is necessary for an effective early warning procedure. This study examined the general characteristics and spatiotemporal variation of rainfall events that responsible for debris flows. Analysis was performed on rainfall data extracted during 2008–2013. The results revealed that the rainfall thresholds for debris flows varied annually and showed tendency toward higher conditions required. The coefficient of variation of relevant rainfall events indicated that the characteristics of the rainstorms changed. In addition, the coefficient of deviation revealed the spatial variation of rainfall in subregions, which was attributed to differences of the local climatic conditions that control debris flow occurrence. The primary controlling rainfall indices for triggering debris flows were filtered, and the most suitable models for establishing rainfall thresholds were selected. Ultimately, the rainfall thresholds were obtained for each subregion within the study area. © 2017, Springer-Verlag GmbH Germany.
AUTHOR KEYWORDS: Debris flows; Inducing rainfall; Rainfall thresholds; Triggering rainfall intensity; Wenchuan Earthquake area
INDEX KEYWORDS: Debris; Earthquakes; Geophysics; Storms; Climatic conditions; Coefficient of variation; Debris flow occurrences; Debris flows; Rainfall intensity; Rainfall thresholds; Spatio-temporal variation; Wenchuan Earthquake; Rain
REFERENCES: Barnes, Lindsey R., False alarms and close calls: A conceptual model of warning accuracy, Weather and Forecasting, 22, 5, pp. 1140-1147, (2007); 
Meteorological and Regulations Compilation of the Prc, (2005); 
Cui, Peng, Relationships between antecedent rainfall and debris flows in Jiangjia Ravine, China, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, pp. 3-10, (2007); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, Risk assessment of simultaneous debris flows in mountain townships, Progress in Physical Geography, 37, 4, pp. 516-542, (2013); 
Dowling, Casey A., Debris flows and their toll on human life: A global analysis of debris-flow fatalities from 1950 to 2011, Natural Hazards, 71, 1, pp. 203-227, (2014); 
Beijing Seismological Press; 
J Catastrophology, (2012); 
Mount Res, (2014); 
Guo, Xiaojun, Intensity-duration threshold of rainfall-triggered debris flows in the Wenchuan Earthquake affected area, China, Geomorphology, 253, pp. 208-216, (2016)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, H., Li, X., Gong, W.
AUTHOR FULL NAMES: Xu, Hui (59610132400); Li, Xiang (57195533852); Gong, Wenyin (23090822300)
59610132400; 57195533852; 23090822300
Research on recognition of landslides with remote sensing images based on extreme learning machine
(2017), 1, art. no. 8005896, pp. 740 - 747, Cited 7 times.
DOI: 10.1109/CSE-EUC.2017.145
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034633486&doi=10.1109%2FCSE-EUC.2017.145&partnerID=40&md5=a3b4f2742b0ba42095c6180ce63ee396

AFFILIATIONS: School of Computer Science, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: The geological disasters of landslides induced by the Wenchuan earthquake are great in number so landslide disaster recognition and investigation must be conducted in the early stage of large construction planning in the disaster area. In recent years, the studies on image recognition focus on the extreme learning machine algorithm. Based on the preprocessing of remote sensing images, this paper conducts landslide recognition with remote sensing images through the extreme learning machine classification combined with color and texture features of ground objects. The comparison experiments of landslide recognition with the support vector machine algorithm shows that the recognition accuracy of the ELM algorithm is not much different from that of the SVM algorithm, but the extreme learning machine takes short time in training with absolute advantage. © 2017 IEEE.
AUTHOR KEYWORDS: extreme learning machine; geological disaster; landslide recognition; remote sensing image
INDEX KEYWORDS: Disasters; Earthquakes; Geology; Image recognition; Knowledge acquisition; Landslides; Learning algorithms; Learning systems; Support vector machines; Ubiquitous computing; Color and texture features; Construction planning; Extreme learning machine; Geological disaster; Recognition accuracy; Remote sensing images; Support vector machine algorithm; Wenchuan Earthquake; Remote sensing
REFERENCES: Electronic Design Engineering, (2011); 
Yang, Yahui, Research on intrusion detection based on incremental GHSOM, Jisuanji Xuebao/Chinese Journal of Computers, 37, 5, pp. 1216-1224, (2014); 
Huang, G. B., Extreme learning machine: Theory and applications, Neurocomputing, 70, 1-3, pp. 489-501, (2006); 
Huang, G. B., Extreme learning machine: A new learning scheme of feedforward neural networks, IEEE International Conference on Neural Networks - Conference Proceedings, 2, pp. 985-990, (2004); 
Huang, G. B., Universal approximation using incremental constructive feedforward networks with random hidden nodes, IEEE Transactions on Neural Networks, 17, 4, pp. 879-892, (2006); 
Ayerdi, Borja, Active learning of hybrid extreme rotation forests for CTA image segmentation, pp. 543-548, (2012); 
Zheng, Wenbin, Collaborative work with linear classifier and extreme learning machine for fast text categorization, World Wide Web, 18, 2, pp. 235-252, (2015); 
Termenon, Maite, Extreme learning machines for feature selection and classification of cocaine dependent patients on structural MRI data, Neural Processing Letters, 38, 3, pp. 375-387, (2013); 
He, Bo, Fast Face Recognition Via Sparse Coding and Extreme Learning Machine, Cognitive Computation, 6, 2, pp. 264-277, (2014); 
Theory and Algorithm of Kernel Extreme Learning Machine and Its Application in Image Processing D, (2014)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: IEEE
CONFERENCE NAME: 20th IEEE International Conference on Computational Science and Engineering and 15th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, CSE and EUC 2017
CONFERENCE DATE: 2017-07-21 through 2017-07-24
CONFERENCE LOCATION: Guangzhou, Guangdong
CONFERENCE CODE: 129871
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ren, Z., Zhang, Z., Yin, J.
AUTHOR FULL NAMES: Ren, Zhikun (26321922800); Zhang, Zhuqi (24588369900); Yin, Jinhui (7401693283)
26321922800; 24588369900; 7401693283
Erosion associated with seismically-induced landslides in the middle longmen shan region, Eastern Tibetan Plateau, China
(2017) Remote Sensing, 9 (8), art. no. 864, Cited 11 times.
DOI: 10.3390/rs9080864
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028296020&doi=10.3390%2Frs9080864&partnerID=40&md5=597cef8c629c023d3f6e5acab9b7649e

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The 2008 Wenchuan earthquake and associated co-seismic landslide was the most recent expression of the rapid deformation and erosion occurring in the eastern Tibetan Plateau. The erosion associated with co-seismic landslides balances the long-term tectonic uplift in the topographic evolution of the region; however, the quantitative relationship between earthquakes, uplift, and erosion is still unknown. In order to quantitatively distinguish the seismically-induced erosion in the total erosion, here, we quantify the Wenchuan earthquake-induced erosion using the digital elevation model (DEM) differential method and previously-reported landslide volumes. Our results show that the seismically-induced erosion is comparable with the pre-earthquake short-term erosion. The seismically-induced erosion rate contributes ~50% of the total erosion rate, which suggests that the local topographic evolution of the middle Longmen Shan region may be closely related to tectonic events, such as the 2008 Wenchuan earthquake. We propose that seismically-induced erosion is a very important component of the total erosion, particularly in active orogenic regions. Our results demonstrate that the remote sensing technique of differential DEM provides a powerful tool for evaluating the volume of co-seismic landslides produced in intermountain regions by strong earthquakes. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Differential DEM; Seismically-induced erosion; Topographic evolution; Wenchuan Earthquake
INDEX KEYWORDS: Erosion; Geophysics; Induced Seismicity; Landslides; Remote sensing; Seismology; Surveying; Tectonics; 2008 wenchuan earthquakes; Differential DEM; Digital elevation model; Eastern Tibetan plateau; Remote sensing techniques; Seismically induced landslide; Topographic evolution; Wenchuan Earthquake; Earthquakes
REFERENCES: Avouac, Jean Philippe, Dynamic Processes in Extensional and Compressional Settings - Mountain Building: From Earthquakes to Geological Deformation, 6, pp. 377-439, (2007); 
Tectonic Geomorphology, (2001); 
Hovius, Niels, Prolonged seismically induced erosion and the mass balance of a large earthquake, Earth and Planetary Science Letters, 304, 3-4, pp. 347-355, (2011); 
Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011); 
Korup, Oliver, The role of landslides in mountain range evolution, Geomorphology, 120, 1-2, pp. 77-90, (2010); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Malamud, Bruce D., Landslides, earthquakes, and erosion, Earth and Planetary Science Letters, 229, 1-2, pp. 45-59, (2004); 
Meunier, Patrick, Regional patterns of earthquake-triggered landslides and their relation to ground motion, Geophysical Research Letters, 34, 20, (2007); 
Larsen, Isaac J., Landslide erosion controlled by hillslope material, Nature Geoscience, 3, 4, pp. 247-251, (2010)
PUBLISHER: MDPI AG Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Wen, H., Xie, P., Xiao, P., Hu, D.
AUTHOR FULL NAMES: Wen, Haijia (23988269300); Xie, Peng (57191866942); Xiao, Peng (59857686200); Hu, Dongping (56655666400)
23988269300; 57191866942; 59857686200; 56655666400
Rapid susceptibility mapping of earthquake-triggered slope geohazards in Lushan County by combining remote sensing with the AHP model developed for the Wenchuan earthquake
(2017) Bulletin of Engineering Geology and the Environment, 76 (3), pp. 909 - 921, Cited 19 times.
DOI: 10.1007/s10064-016-0957-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994339731&doi=10.1007%2Fs10064-016-0957-4&partnerID=40&md5=681af35178d4367c776e557d0b0693c9

AFFILIATIONS: Chongqing University, Chongqing, China; School of Civil Engineering, Chongqing University, Chongqing, China
ABSTRACT: A rapid-response mapping model can be used to study the susceptibility of areas of interest to geohazards (which are commonly regarded as among the most damaging natural hazards), assuming that the model is stable (i.e., that it is generally applicable to any such area). Applying a predefined predictive geohazard-susceptibility model to an area with geoenvironmental conditions similar to those of the area for which it was originally formulated is an effective method of testing the stability of the model. In this paper, the analytic hierarchy process (AHP)-based model developed for the Wenchuan earthquake was used to study susceptibility to earthquake-triggered slope geohazards in Lushan County. Upon integrating the results of a literature review, site investigation, and remote sensing interpretation, seven main factors that influence earthquake-triggered slope geohazards were identified, including peak ground acceleration, distance from a stream, distance from a highway, slope gradient, slope position, normalized difference vegetation index, and micro-landform. In order to reduce the subjectivity of the expert evaluation method usually applied in the AHP, these factors were ranked by relative importance using regression analysis. The weight of each factor was then calculated by the AHP. The susceptibility mapping model was obtained on the ArcGIS platform, utilizing map overlaying. Finally, the results were re-classified to obtain a map of slope geohazard susceptibility. The accuracy of the AHP model was evaluated using both qualitative and quantitative methods. In the qualitative method, the modeled distribution of susceptibility was compared with the actually distribution of geohazards in the study area (identified through remote sensing interpretation), and the areas with high and very high geohazard susceptibilities in the model were found to match well with the actual locations of slope geohazards. In the quantitative method, statistical data showed that over 66% of the geohazards were located in areas of high or very high susceptibility according to the model, while only about 16% were located in areas of very low or low susceptibility, and the density of slope geohazards was about 125 times greater in the areas with very high susceptibility than in the areas with very low susceptibility. Also, the AUC value of the ROC curve for the model suggested that it has high predictive power (a predictive accuracy of 84.8%). In conclusion, it was possible to make accurate predictions about the slope geohazards in earthquake-prone areas located in mountainous regions based on geospatial data, and a high correlation between the susceptibility map generated by the AHP-based model and the true distribution of slope geohazards was observed. Therefore, the AHP-based model used here could be applied to map the slope geohazard susceptibility in other mountainous regions which may be prone to slope geohazards during earthquakes. © 2016, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: AHP model; Geospatial data; Remote sensing; Slope geohazards; Susceptibility mapping
INDEX KEYWORDS: Analytic hierarchy process; Earthquakes; Geophysics; Hierarchical systems; Mapping; Regression analysis; Remote sensing; Analytic hierarchy process (ahp); Expert evaluation method; Geo-hazards; Geo-spatial data; Normalized difference vegetation index; Peak ground acceleration; Remote sensing interpretation; Susceptibility mapping; Hazards; analytical hierarchy process; earthquake trigger; mapping; mountain region; regression analysis; remote sensing; Sichuan earthquake 2008; slope; China; Lushan [Sichuan]; Sichuan
REFERENCES: Tien Bui, D., Regional prediction of landslide hazard using probability analysis of intense rainfall in the Hoa Binh province, Vietnam, Natural Hazards, 66, 2, pp. 707-730, (2013); 
Chen, Zhaohua, Landslide hazard mapping using logistic regression model in Mackenzie Valley, Canada, Natural Hazards, 42, 1, pp. 75-89, (2007); 
Preliminary Results of the Fault Rupture Process Inversion, (2013); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Eidsvig, Unni Marie K., Assessment of socioeconomic vulnerability to landslides using an indicator-based approach: Methodology and case studies, Bulletin of Engineering Geology and the Environment, 73, 2, pp. 307-324, (2014); 
Harp, Edwin L., Landslide inventories: The essential part of seismic landslide hazard analyses, Engineering Geology, 122, 1-2, pp. 9-21, (2011); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Assessment of Geological Environmental and Management of Geological Disasters in Chinese, (2008); 
Huang, Runqiu, Characteristics of co-seismic landslides triggered by the Lushan Ms7.0 earthquake on the 20th of April, Sichuan Province, China, Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 48, 4, pp. 581-589, (2013); 
Logistic Regression A Self Learning Text, (2002)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Peng, L., Xu, S., Mei, J., Su, F.-H.
AUTHOR FULL NAMES: Peng, Ling (55152076100); Xu, Suning (25931301000); Mei, Junjun (57195330411); Su, Fenghuan (14033176000)
55152076100; 25931301000; 57195330411; 14033176000
Earthquake-induced landslide recognition using high-resolution remote sensing images
(2017) National Remote Sensing Bulletin, 21 (4), pp. 509 - 518, Cited 27 times.
DOI: 10.11834/jrs.20176176
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027222337&doi=10.11834%2Fjrs.20176176&partnerID=40&md5=7c2ea9a6641981540e6cf671f331159a

AFFILIATIONS: China Institute of Geo-Environment Monitoring, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Earthquake-induced landslides are the most common geological disasters caused by large seismic activities in mountainous areas, and they are known for their suddenness, destructiveness, and extensive distribution range. These landslides often result in severe casualties and economic losses. Currently, regional earthquake-induced landslides are mainly obtained by visual interpretation and computer data extraction from remote sensing images. These methods are objective, time-consuming, and low in precision. Thus, they cannot address the requirement of practically conducting emergency surveys and disaster evaluations after earthquakes. In this study, with the main data source of high-resolution remote sensing images from ZY-3 and GF-1, as well as the study area of the Wenchuan earthquake region, objects of multilevel landslides were established using the multi-scale optimum partition method based on an in-depth analysis of seismic landslide features. A recognition rule set of multi-dimensional landslides was also built by combining topographic and image features, such as spectrum, texture, and geometry. Additionally, recognition models for landslide stratification were proposed based on the recognition models of high-resolution images and an understanding of the scenes. Through all of the preceding efforts mentioned, the spatial distribution of the seismic landslide, as well as the sliding source, transport, and depositional areas, can be identified. The analysis results of the experimental area showed a minimum recognition accuracy of 81.89%, with the depositional zone of landslides being the easiest zone to recognize, and the established method can be generalized. These findings may provide technical support for post-earthquake emergency investigations and further promote the application of high-resolution remote sensing data from Chinese satellites for landslides recognition. © 2017, Science Press. All right reserved.
AUTHOR KEYWORDS: Chinese satellite; Earthquake-induced landslides; High-resolution remote sensing; Landslide recognition; Wenchuan earthquake
INDEX KEYWORDS: Deposition; Disasters; Geophysics; Image reconstruction; Landslides; Losses; Remote sensing; Seismology; Earthquake-induced landslides; High resolution image; High resolution remote sensing; High resolution remote sensing images; Regional earthquakes; Remote sensing images; Visual interpretation; Wenchuan Earthquake; Earthquakes
REFERENCES: Blaschke, Thomas, Object-based image analysis and digital terrain analysis for locating landslides in the Urmia Lake basin, Iran, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7, 12, pp. 4806-4817, (2014); 
Borghuis, A. M., Comparison between automated and manual mapping of typhoon-triggered landslides from SPOT-5 imagery, International Journal of Remote Sensing, 28, 8, pp. 1843-1856, (2007); 
Cheng, Gong, Automatic landslide detection from remote-sensing imagery using a scene classification method based on boVW and pLSA, International Journal of Remote Sensing, 34, 1, pp. 45-59, (2013); 
Remote Sensing Technology and Application, (2013); 
Dou, Jie, Automatic case-based reasoning approach for landslide detection: Integration of object-oriented image analysis and a genetic algorithm, Remote Sensing, 7, 4, pp. 4318-4342, (2015); 
Dragut, Lucian D., Automated parameterisation for multi-scale image segmentation on multiple layers, ISPRS Journal of Photogrammetry and Remote Sensing, 88, pp. 119-127, (2014); 
Acta Geologica Sichuan, (2011); 
Hölbling, Daniel, An object-based approach for semi-automated landslide change detection and attribution of changes to landslide classes in northern Taiwan, Earth Science Informatics, 8, 2, pp. 327-335, (2015); 
Huang, Runqiu, Mechanism and geomechanical modes of landslide hazards triggered by Wenchuan 8.0 earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, 6, pp. 1239-1249, (2009); 
Kurtz, Camille, Hierarchical extraction of landslides from multiresolution remotely sensed optical images, ISPRS Journal of Photogrammetry and Remote Sensing, 87, pp. 122-136, (2014)
PUBLISHER: Science Press bcanji@mail.sioc.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Wu, L.Z., Shi, J.S., Xu, Q.
AUTHOR FULL NAMES: Wu, Lizhou (55487546500); Shi, Jusong (7404495701); Xu, Qiang (56506033600)
55487546500; 7404495701; 56506033600
The rainfall-induced Wulipo rockslide, China: a modified model for rockslide initiation
(2017) Environmental Earth Sciences, 76 (14), art. no. 497, Cited 11 times.
DOI: 10.1007/s12665-017-6826-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025442216&doi=10.1007%2Fs12665-017-6826-z&partnerID=40&md5=74d02f6d43184894a669b5843573f7c8

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Key Laboratory of Neotectonic Movement and Geohazard, Beijing, China
ABSTRACT: During the May 12, 2008 Wenchuan earthquake, rock masses in the earthquake region were shaken, and subsequently, a number of post-earthquake landslides and debris flows occurred, triggered by heavy rainstorms. This paper presents a study of the rainfall-induced mechanism that triggered the landslides. This study is based on pre- and post-landslide geomorphology and geological features identified from pre-landslide high-resolution satellite imagery and post-landslide aerial photographs of the Wulipo landslide. The remote sensing observations were verified by field investigations. The results indicate that the heavy storm that occurred in July 2013 was the main trigger for the landslide although existing tensions and weak rock interfaces were the main internal causes for reactivation of the landslide. The bedding in the rocks dips in the same direction as the topographic slope. A tensile trough developed at the scarp. Based on data from the Wulipo rockslide, a model is proposed for calculating the safety factor for rockslides that takes into account the hydrostatic pressure along the structural plane of the rockslide. The results show that the proposed method can effectively estimate the stability of a storm-induced rockslide in regions underlain by bedded rocks. Based on this estimate, it is concluded that the Wulipo rockslide is a reactivated old rockslide. © 2017, Springer-Verlag GmbH Germany.
AUTHOR KEYWORDS: Bedding sliding; Initiation mechanism; Rock slope; Storm-induced rockslide; Wulipo rockslide
INDEX KEYWORDS: Earthquakes; Geophysics; Hydrostatic pressure; Rain; Rocks; Safety factor; Satellite imagery; Storms; 2008 wenchuan earthquakes; Bedding sliding; Field investigation; Geological features; High resolution satellite imagery; Initiation mechanism; Rock slope; Wulipo rockslide; Landslides; aerial photograph; bedding plane; debris flow; geomorphology; landslide; model; postseismic process; rainfall; rainstorm; rock mass response; satellite imagery; Sichuan earthquake 2008; site investigation; sliding; slope stability; topography; trough; China
REFERENCES: Chai, Bo, Diagrammatize movement disintegration patterns of bedding rockslide, Environmental Earth Sciences, 75, 4, pp. 1-16, (2016); 
Rock Slope Engineering, (1981); 
Rock Slope Stability, (1999); 
Luo, Qiang, Quasi-static analysis of seismic stability of anchored rock slope under surcharge and water pressure conditions, Yantu Lixue/Rock and Soil Mechanics, 31, 11, pp. 3585-3593, (2010); 
Palenzuela, José Antonio, Assessing critical rainfall thresholds for landslide triggering by generating additional information from a reduced database: an approach with examples from the Betic Cordillera (Spain), Natural Hazards, 84, 1, pp. 185-212, (2016); 
Sharma, S. K., Plane failure analysis of rock slopes, Geotechnical and Geological Engineering, 13, 2, pp. 105-111, (1995); 
Shu, Jisen, Improving on assumption for water pressure distributing on failure surface in rock slope, Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 33, 5, pp. 509-512, (2004); 
Shukla, Sanjay K., Analytical expression for factor of safety of an anchored rock slope against plane failure, International Journal of Geotechnical Engineering, 5, 2, pp. 181-187, (2011); 
Shukla, Sanjay K., Effect of surcharge on the stability of anchored rock slope with water filled tension crack under seismic loading condition, Geotechnical and Geological Engineering, 27, 4, pp. 529-538, (2009); 
Wu, Hengbin, Stability study of slope with planar failure based on different water pressure distributions, Yantu Lixue/Rock and Soil Mechanics, 32, 8, pp. 2493-2499, (2011)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhan, W., Fan, X., Huang, R., Pei, X., Xu, Q., Li, W.
AUTHOR FULL NAMES: Zhan, Weiwei (57194511378); Fan, Xuanmei (12752112800); Huang, Runqiu (55835407700); Pei, Xiangjun (14058672500); Xu, Qiang (56506033600); Li, Weile (25936551300)
57194511378; 12752112800; 55835407700; 14058672500; 56506033600; 25936551300
Empirical prediction for travel distance of channelized rock avalanches in the Wenchuan earthquake area
(2017) Natural Hazards and Earth System Sciences, 17 (6), pp. 833 - 844, Cited 41 times.
DOI: 10.5194/nhess-17-833-2017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020437053&doi=10.5194%2Fnhess-17-833-2017&partnerID=40&md5=bdbd73ddb4d02f7af76d1ec71d4f4b59

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Rock avalanches are extremely rapid, massive flow-like movements of fragmented rock. The travel path of the rock avalanches may be confined by channels in some cases, which are referred to as channelized rock avalanches. Channelized rock avalanches are potentially dangerous due to their difficult-To-predict travel distance. In this study, we constructed a dataset with detailed characteristic parameters of 38 channelized rock avalanches triggered by the 2008 Wenchuan earthquake using the visual interpretation of remote sensing imagery, field investigation and literature review. Based on this dataset, we assessed the influence of different factors on the runout distance and developed prediction models of the channelized rock avalanches using the multivariate regression method. The results suggested that the movement of channelized rock avalanche was dominated by the landslide volume, total relief and channel gradient. The performance of both models was then tested with an independent validation dataset of eight rock avalanches that were induced by the 2008 Wenchuan earthquake, the <i>M</i>s 7.0 Lushan earthquake and heavy rainfall in 2013, showing acceptable good prediction results. Therefore, the travel-distance prediction models for channelized rock avalanches constructed in this study are applicable and reliable for predicting the runout of similar rock avalanches in other regions. ©Author(s) 2017.
INDEX KEYWORDS: earthquake event; empirical analysis; imaging method; prediction; rainfall; regression analysis; remote sensing; rock avalanche; China; Sichuan; Wenchuan
REFERENCES: Wissenschaftliche Alpenvereinshefte, (1974); 
Corominas, Jordi, The angle of reach as a mobility index for small and large landslides, Canadian Geotechnical Journal, 33, 2, pp. 260-271, (1996); 
Davies, Timothy R.H., A fragmentation-spreading model for long-runout rock avalanches, Canadian Geotechnical Journal, 36, 6, pp. 1096-1110, (1999); 
Fan, Xuanmei, Empirical prediction of coseismic landslide dam formation, Earth Surface Processes and Landforms, 39, 14, pp. 1913-1926, (2014); 
Finlay, P. J., Landslide risk assessment: Prediction of travel distance, Canadian Geotechnical Journal, 36, 3, pp. 556-562, (1999); 
Gauer, Peter, Can we learn more from the data underlying the statistical α-α model with respect to the dynamical behavior of avalanches?, Cold Regions Science and Technology, 62, 1, pp. 42-54, (2010); 
Guo, Deping, An empirical model for landslide travel distance prediction in Wenchuan earthquake area, Landslides, 11, 2, pp. 281-291, (2014); 
Bergsturz Und Menschenleben, (1932); 
Huang, Runqiu, Mechanism and geo-mechanics models of landslides triggered by 5.12 Wenchuan Earthquake, Journal of Mountain Science, 8, 2, pp. 200-210, (2011); 
Hungr, Oldrich, A review of the classification of landslides of the flow type, Environmental and Engineering Geoscience, 7, 3, pp. 221-238, (2001)
PUBLISHER: Copernicus GmbH info@copernicus.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, L., Tian, B., Koike, K., Hong, B., Ren, P.
AUTHOR FULL NAMES: Wang, Ling (59088927700); Tian, Bingwei (24376970400); Koike, Katsuaki (57219664247); Hong, Buting (55522454800); Ren, Ping (55490489400)
59088927700; 24376970400; 57219664247; 55522454800; 55490489400
Integration of landscape metrics and variograms to characterize and quantify the spatial heterogeneity change of vegetation induced by the 2008 wenchuan earthquake
(2017) ISPRS International Journal of Geo-Information, 6 (6), art. no. 164, Cited 11 times.
DOI: 10.3390/ijgi6060164
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021162631&doi=10.3390%2Fijgi6060164&partnerID=40&md5=7ae8b44db79629a66bb7dd84e1292e40

AFFILIATIONS: Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Sichuan Normal University, Chengdu, Sichuan, China; Collaborative Innovation Center for Land Resource Development and Protection, Sichuan Normal University, Chengdu, Sichuan, China; Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, Sichuan, China; Department of Urban Management, Graduate School of Engineering, Kyoto, Kyoto, Japan
ABSTRACT: The quantification of spatial heterogeneity can be used to examine the structure of ecological systems. The 2008Wenchuan earthquake caused severe vegetation damage. In addition to simply detecting change, the magnitude of changes must also be examined. Remote sensing and geographic information system techniques were used to produce landscape maps before and after the earthquake and analyze the spatial-temporal change of the vegetation pattern. Landscape metrics were selected to quantify the spatial heterogeneity in a categorical map at both the class and landscape levels. The results reveal that the Wenchuan earthquake greatly increased the heterogeneity in the study area. In particular, forests experienced the most fragmentation among all of the landscape types. In addition, spatial heterogeneity in a numerical map was studied by using variogram analysis of normalized difference vegetation indices derived from Landsat images. In comparison to before the earthquake, the spatial variability after the earthquake had doubled. The structure of the spatial heterogeneity represented by the range of normalized difference vegetation index (NDVI) variograms also changed due to the earthquake. Moreover, the results of the NDVI variogram analysis of three contrasting landscapes, which were farmland, broadleaved forest, and coniferous forest, confirm that the earthquake produced spatial variability and changed the structure of the landscapes. Regardless of before or after the earthquake, farmland sites are the most heterogeneous among the three landscapes studied. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Landscape metrics; Remote sensing; Spatial heterogeneity; Variogram
REFERENCES: Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Tang, Huiming, Characteristics of landslides induced by the great Wenchuan earthquake, Journal of Earth Science, 21, 1, pp. 104-113, (2010); 
Fan, Jianrong, Rapid assessment of secondary disasters induced by the wenchuan earthquake, Computing in Science and Engineering, 12, 1, pp. 10-19, (2010); 
Wang, Ling, Relationship between remotely sensed vegetation change and fracture zones induced by the 2008 Wenchuan earthquake, China, Journal of Earth Science, 24, 2, pp. 282-296, (2013); 
Peng, Wenfu, Dynamic monitoring of fractional vegetation cover along Minjiang River from Wenchuan county to Dujiangyan city using multi-temporal landsat 5 and 8 images, Shengtai Xuebao, 36, 7, pp. 1975-1988, (2016); 
Jiao, Quanjun, Assessment of spatio-temporal variations in vegetation recovery after the Wenchuan earthquake using Landsat data, Natural Hazards, 70, 2, pp. 1309-1326, (2014); 
Xu, Jiceng, Monitoring the riparian vegetation cover after the Wenchuan earthquake along the Minjiang River valley based on multi-temporal Landsat TM images: A case study of the Yingxiu-Wenchuan section, Shengtai Xuebao, 33, 16, pp. 4966-4974, (2013); 
Li, Habin, A simulation experiment to quantify spatial heterogeneity in categorical maps, Ecology, 75, 8, pp. 2446-2455, (1994); 
Quantitative Methods in Landscape Ecology, (1991)
PUBLISHER: MDPI AG Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Automatic event detection and picking of P, S seismic phases for earthquake early warning and application for the 2008 Wenchuan earthquake
(2017) Soil Dynamics and Earthquake Engineering, 97, pp. 172 - 181, Cited 23 times.
DOI: 10.1016/j.soildyn.2017.03.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015658654&doi=10.1016%2Fj.soildyn.2017.03.017&partnerID=40&md5=0d09e2a0439840753e8acb231b571761

AFFILIATIONS: Beijing Jiaotong University, Beijing, China
ABSTRACT: We proposed a set of high-precision combination algorithms to detect and pick seismic phases for the earthquake early warning (EEW). First by the polarisation analysis of the three-component seismograms, we developed two filters to separate P and S waves for each record through a sliding time window. Then based on the short term average/long term average characteristic function on the polarised traces, an amplification coefficient, in terms of δ, was introduced to be multiplied by the original ratio to sensitively reflect the changes of signals’ amplitude and frequency, where a better detection of the phase arrival was achieved. Next according to the preliminary detections, we used the Akaike information criteria function combined with the higher order statistics to refine the signal and lock on the arrival time with a higher degree of accuracy. We tested our techniques to the main-shock and aftershocks of the M<inf>s</inf> 8.0 Wenchuan earthquake, where hundreds of three-component acceleration records over magnitudes of M<inf>s</inf> 5.0 were treated. In comparison to the analyst picks, the results of the proposed detection algorithms were shown to perform well and can be applied for the early warning of impending earthquakes occurred with diverse focal mechanisms, complicated propagation process and site effects. © 2017 Elsevier Ltd
AUTHOR KEYWORDS: Body waves; Earthquake early warning; Phase detection; Time-series analysis; Wenchuan earthquake
INDEX KEYWORDS: Earthquake effects; Geophysics; Higher order statistics; Seismology; Shear waves; Signal detection; Time series analysis; 2008 wenchuan earthquakes; Akaike information criterion; Amplification coefficient; Body waves; Characteristic functions; Earthquake early warning; Phase detection; Wenchuan Earthquake; Earthquakes; aftershock; body wave; early warning system; focal mechanism; P-wave; S-wave; seismogram; Sichuan earthquake 2008; time series analysis
REFERENCES: undefined; 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Hsiao, Naichi, A new prototype system for earthquake early warning in Taiwan, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 201-208, (2011); 
Gasparini, Paolo, Earthquake early warning as a tool for improving society's resilience and crisis response, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 267-270, (2011); 
Wu, Yih-Min Min, Experiment on an onsite early warning method for the Taiwan early warning system, Bulletin of the Seismological Society of America, 95, 1, pp. 347-353, (2005); 
Odaka, Toshikazu, A new method of quickly estimating epicentral distance and magnitude from a single seismic record, Bulletin of the Seismological Society of America, 93, 1, pp. 526-532, (2003); 
Nakamura, Hiromitsu, Evaluation of the real-time earthquake information system in Japan, Geophysical Research Letters, 36, 5, (2009); 
undefined; 
Nakamura, Yutaka, Earthquake alarm system for Japan Railways, Japanese Railway Engineering, 109, pp. 1-7, (1989); 
Zollo, Aldo, Earthquake magnitude estimation from peak amplitudes of very early seismic signals on strong motion records, Geophysical Research Letters, 33, 23, (2006)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cui, Y., Du, J., Li, X., Sun, F.-X., Zou, Z.
AUTHOR FULL NAMES: Cui, Yueju (36717262300); Du, Jianguo (7402574923); Li, Xinyan (57190426251); Sun, Fengxia (56763219700); Zou, Zhenyu (56289776000)
36717262300; 7402574923; 57190426251; 56763219700; 56289776000
Estimate of C-bearing gas emissions from the fault associated with Wenchuan earthquake
(2017) Bulletin of Mineralogy Petrology and Geochemistry, 36 (2), pp. 222 - 227, Cited 2 times.
DOI: 10.3969/j.issn.1007-2802.2017.02.005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024481150&doi=10.3969%2Fj.issn.1007-2802.2017.02.005&partnerID=40&md5=4dc669160f9ee00177c9638fd869d939

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Ningxia Bureau of Seismology, China
ABSTRACT: Fault is the favorable channel for the underground gas migrating upward. The underground gas migrated into the atmosphere along the fault enhanced by the seismic activities. The total variable quantities of C-bearing gases(CH<inf>4</inf>, CO and CO<inf>2</inf>) accompanied with Wenchuan earthquake were estimated preliminarily using the technology of satellite hyperspectral remote sensing in this paper. The results showed that large amounts of C-bearing gases emitted constantly from the Longmen-shan fault into the atmosphere for a long time; At least 4740 t CO, 8549 t CH<inf>4</inf> and 87.15 Mt CO<inf>2</inf> were more emitted from Longmenshan fault into the atmosphere compared with the background caused by the occurrence of Wenchuan earthquake during a short period. The C-bearing gas emissions from the fault resulted by the seismic activities are the important parts of geologic C-emission, which cannot be ignored and have an important effect on the atmospheric environment study.
AUTHOR KEYWORDS: Ch4; CO; CO2; Earthquake; Fault discharge
INDEX KEYWORDS: carbon dioxide; carbon emission; carbon monoxide; fault; methane; multispectral image; remote sensing; seismicity; Sichuan earthquake 2008; China; Longmenshan Fault Zone; Sichuan
REFERENCES: Volcanism and Climate Change, (1992); 
Aumann, Hartmut H.G., AIRS/AMSU/HSB on the aqua mission: Design, science objectives, data products, and processing systems, IEEE Transactions on Geoscience and Remote Sensing, 41, 2, pp. 253-264, (2003); 
Barnet, Christopher D., Remote sounding of trace gases with the EOS/AIRS instrument, Proceedings of SPIE - The International Society for Optical Engineering, 5548, pp. 300-312, (2004); 
Chiodini, G., Soil CO2 flux measurements in volcanic and geothermal areas, Applied Geochemistry, 13, 5, pp. 543-552, (1998); 
Tellus, (1974); 
Geochemistry Research Advances, (2008); 
Etiope, Giuseppe, Subsoil CO2 and CH4 and their advective transfer from faulted grassland to the atmosphere, Journal of Geophysical Research, 104, D14, pp. 16889-16894, (1999); 
Etiope, Giuseppe, Structural pattern and CO2-CH4 degassing of Ustica Island, Southern Tyrrhenian basin, Journal of Volcanology and Geothermal Research, 88, 4, pp. 291-304, (1999); 
Fishman, Jack, Observational and theoretical evidence in support of a significant in-situ photochemical source of tropospheric ozone., Tellus, 31, 5, pp. 432-446, (1979); 
Fishman, Jack, Correlative nature of ozone and carbon monoxide in the troposphere: implications for the tropospheric ozone budget., Journal of Geophysical Research, 88, C6, pp. 3662-3670, (1983)
PUBLISHER: China Association for Science and Technology zengyiqiang@vip.gyig.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lin, J., Wang, M., Yang, J., Yang, Q.
AUTHOR FULL NAMES: Lin, Jiayuan (56129616500); Wang, Meimei (57207265053); Yang, Jia (57193744075); Yang, Qingxia (59807318500)
56129616500; 57207265053; 57193744075; 59807318500
Landslide Identification and Information Extraction Based on Optical and Multispectral UAV Remote Sensing Imagery
(2017) IOP Conference Series: Earth and Environmental Science, 57 (1), art. no. 012017, Cited 10 times.
DOI: 10.1088/1755-1315/57/1/012017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016285673&doi=10.1088%2F1755-1315%2F57%2F1%2F012017&partnerID=40&md5=3fbdc97a816e24389df7931b3c511dfa

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu, Sichuan, China; Jiuzhaigou Administration Bureau, Sichuan, China
ABSTRACT: Landslide is one of the most serious natural disasters which caused enormous economic losses and casualties in the world. Fast and accurate identification of newly occurred landslide and extraction of relevant information are the premise and foundation for landslide disaster assessment and relief. As the places where landslides occur are often inaccessible for field observation because of the temporary failure in transportation and communication. Therefore, UAV remote sensing can be adopted to collect landslide information efficiently and quickly with the advantages of low cost, flexible launch and landing, safety, under-cloud-flying, and hyperspatial image resolution. Newly occurred landslides are usually accompanied with those phenomena such as vegetation burying and bedrock or bare soil exposure, which can be easily detected in optical or multispectral UAV images. By taking one typical landslide occurred in Wenchuan Earthquake stricken area in 2010 as an example, this paper demonstrates the process of integration of multispectral camera with UAV platform, NDVI generation with multispectral UAV images, three-dimensional terrain and orthophoto generation with optical UAV images, and identification and extraction of landslide information such as its location, impacted area, and earthwork volume. © Published under licence by IOP Publishing Ltd.
INDEX KEYWORDS: Disasters; Earthquakes; Image resolution; Landslides; Losses; Observatories; Roads and streets; Unmanned aerial vehicles (UAV); Field observations; Landslide identification; Multi-spectral cameras; Natural disasters; Three dimensional terrain; Typical landslide; UAV remote sensing; Wenchuan Earthquake; Remote sensing
REFERENCES: Delacourt, Christophe, Remote-sensing techniques for analysing landslide kinematics: A review, BSGF - Earth Sciences Bulletin, 178, 2, pp. 89-100, (2007); 
Landslides in Practice Investigation Analysis and Remedial Preventative Options in Soils, (2005); 
Introduction to 3D Data Modelling with Arcgis 3danalyst and Google Earth, (2009); 
Lear, Anne C., Digital Orthophotography: Mapping with Pictures, IEEE Computer Graphics and Applications, 17, 5, pp. 12-14, (1997); 
18th Int Con on Geoinformatics, (2010); 
Trends Ecol Evol, (2006); 
Agricultural Digital Camera User S Guide, (2011); 
Great Wenchuan Earthquake Seismogeology and Landslide Hazards, (2009); 
Zhang, Wenjiang, Estimating Wenchuan Earthquake induced landslides based on remote sensing, International Journal of Remote Sensing, 31, 13, pp. 3495-3508, (2010)
PUBLISHER: Institute of Physics Publishing michael.roberts@iop.org
SPONSORS: Division of Earth Sciences of the Chinese Academy of Sciences (CAS)
CONFERENCE NAME: International Symposium on Earth Observation for One Belt and One Road, EOBAR 2016
CONFERENCE DATE: 2016-05-16 through 2016-05-17
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 126881
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhao, X., Wang, P., Chen, C., Jiang, T., Yu, Z., Guo, B.
AUTHOR FULL NAMES: Zhao, Xin (56170313200); Wang, Ping (59101989100); Chen, Chao (57192218190); Jiang, Tao (55737611000); Yu, Zhigang (57193212909); Guo, Biyun (43161091100)
56170313200; 59101989100; 57192218190; 55737611000; 57193212909; 43161091100
Waterbody information extraction from remote-sensing images after disasters based on spectral information and characteristic knowledge
(2017) International Journal of Remote Sensing, 38 (5), pp. 1404 - 1422, Cited 46 times.
DOI: 10.1080/01431161.2016.1278284
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011685035&doi=10.1080%2F01431161.2016.1278284&partnerID=40&md5=756a8a7ebdfad5ecb8d20dc8a6588104

AFFILIATIONS: College of Geomatics, Shandong University of Science and Technology, Qingdao, Shandong, China; Taishan College of Science and Technology, Shandong University of Science and Technology, Qingdao, Shandong, China; Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, China
ABSTRACT: This article proposes a post-disaster waterbody information extraction method based on spectral information from remote-sensing images and characteristic knowledge that can resist interference from factors such as changes in water quality, waves caused by accelerated water flow, and varying water levels. The method first analyses the display characteristics of waterbodies from remote-sensing images (their spectral characteristics, geometric features, and textural features), forming a decision tree of rules that represent characteristic knowledge for waterbody information extraction. This rule set is added to the various processing stages of waterbody information extraction after disasters to construct a waterbody information extraction model. Second, an object-oriented method is used for image segmentation. A rough initial waterbody information extraction is performed based on spectral information, and then refined based on the characteristic knowledge. Third, noise is eliminated and holes are filled in the images of the refined waterbody information extraction results. Finally, the accuracy of this new waterbody information extraction method is evaluated from both qualitative and quantitative aspects. Accuracy assessments of the experimental results obtained using remote-sensing images from the Wenchuan earthquake and a 2010 flood in Pakistan show that the proposed method is both efficient and accurate at extracting post-disaster waterbody information even when the background is complex. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
INDEX KEYWORDS: Decision trees; Disasters; Earthquakes; Extraction; Flow of water; Image segmentation; Information retrieval; Remote sensing; Water levels; Water quality; Accuracy assessment; Display characteristics; Information extraction methods; Object oriented method; Remote sensing images; Spectral characteristics; Spectral information; Wenchuan Earthquake; Data mining; image analysis; information; knowledge; remote sensing; water flow; water level; water quality; Pakistan
REFERENCES: Álvarez-Romero, Jorge G., A novel approach to model exposure of coastal-marine ecosystems to riverine flood plumes based on remote sensing techniques, Journal of Environmental Management, 119, pp. 194-207, (2013); 
Benz, Ursula Caroline, Multi-resolution, object-oriented fuzzy analysis of remote sensing data for GIS-ready information, ISPRS Journal of Photogrammetry and Remote Sensing, 58, 3-4, pp. 239-258, (2004); 
Blaschke, Thomas, Object based image analysis for remote sensing, ISPRS Journal of Photogrammetry and Remote Sensing, 65, 1, pp. 2-16, (2010); 
Chen, Chao, Extraction of bridges over water from high-resolution optical remote-sensing images based on mathematical morphology, International Journal of Remote Sensing, 35, 10, pp. 3664-3682, (2014); 
Gu, Bin, A Robust Regularization Path Algorithm for ν-Support Vector Classification, IEEE Transactions on Neural Networks and Learning Systems, 28, 5, pp. 1241-1248, (2017); 
Gu, Bin, Incremental support vector learning for ordinal regression, IEEE Transactions on Neural Networks and Learning Systems, 26, 7, pp. 1403-1416, (2015); 
Gu, Bin, Incremental learning for ν-Support Vector Regression, Neural Networks, 67, pp. 140-150, (2015); 
Gu, Bin, Structural minimax probability machine, IEEE Transactions on Neural Networks and Learning Systems, 28, 7, pp. 1646-1656, (2017); 
Hubert, Lawrence James, Comparing partitions, Journal of Classification, 2, 1, pp. 193-218, (1985); 
Ji, Lei, Analysis of dynamic thresholds for the normalized difference water index, Photogrammetric Engineering and Remote Sensing, 75, 11, pp. 1307-1317, (2009)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, J., Li, Q., Jiao, Q.
AUTHOR FULL NAMES: Zhang, Jingfa (14032411600); Li, Qiang (56041974800); Jiao, Qisong (56233051900)
14032411600; 56041974800; 56233051900
Multi-source remote sensing characteristics and mechanism analyses of building seismic damages
(2017) Acta Seismologica Sinica, 39 (2), pp. 257 - 272, Cited 4 times.
DOI: 10.11939/jass.2017.02.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020644555&doi=10.11939%2Fjass.2017.02.009&partnerID=40&md5=3d1e044c3ac0c5adcc511df09215441f

AFFILIATIONS: Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: With the increasing of remote sensing information sources, a variety of remote sensing data are used to interpret the seismic damage of buildings in seismic damage assessment. In order to accurately interpret the seismic damage grade and establish the automatic identification model, this paper focuses on the analyses of the characteristics of all kinds of buildings in the optical images, the imaging characteristics of synthetic aperture radar (SAR) images, and the three-dimensional characteristics of the light detection and ranging (LiDAR) images by means of visual interpretation, image processing, statistical analyses after collecting the remote sensing images of the M<inf>S</inf>8.0 Wenchuan earthquake in 2008 and M<inf>S</inf>7.1 Yushu earthquake in 2010. Furthermore, several simplified models of the building are constructed, and the profile features of the images involving many kinds destroyed building are analyzed in combination with the images from optical and radar sensors. The related study results show that the color information from optical remote sensing image is in accordance with the human eye color principle, which is propitious to obtain better interpretation of results; the SAR image can reflect the features of side/surface roughness and angle reflection; LiDAR image can obtain the three-dimensional information of the building. Therefore, the multi-source remote sensing data should be integrated effectively so as to achieve the best effect in seismic damage assessment. © 2017, Acta Seismologica Sinica Press. All right reserved.
AUTHOR KEYWORDS: Building seismic damage; Light detection and ranging; Multi-source remote sensing; Optical image; Synthetic aperture radar image
INDEX KEYWORDS: building; earthquake damage; image processing; lidar; radar imagery; remote sensing; Sichuan earthquake 2008; synthetic aperture radar; Yushu earthquake 2010
REFERENCES: undefined, (2011); 
Buildings Earthquake Damage Analysis Based on Lidar, (2015); 
Method of Extracting Building Damage from High Resolution SAR Image, (2012); 
Science of Surveying and Mapping, (2009); 
A Method Study on Automatic Recognition and Classification of Earthquake Caused Building Damage in Cities Using Remote Sensing D, (2003); 
Remote Sensing for Land and Resources, (2013); 
Journal of Remote Sensing, (2008); 
undefined, (2007); 
Target Recognition in High Resolution SAR Images, (2009); 
undefined
PUBLISHER: Acta Seismologica Sinica Press dzxb79@126.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, X., Zhang, Y., Guo, X., Wei, C., Zhang, L.
AUTHOR FULL NAMES: Zhang, Xuan (55949839300); Zhang, Yuansheng (23487593300); Guo, Xiao (38861546400); Wei, Congxin (40662167900); Zhang, Lifeng (57189391821)
55949839300; 23487593300; 38861546400; 40662167900; 57189391821
Analysis of thermal infrared anomaly in the Nepal MS 8.1 earthquake
(2017) Earth Science Frontiers, 24 (2), pp. 227 - 233, Cited 10 times.
DOI: 10.13745/j.esf.2017.02.022
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020391666&doi=10.13745%2Fj.esf.2017.02.022&partnerID=40&md5=faf240d607af8cef6097d2fd4e1a8c11

AFFILIATIONS: Lanzhou Institute of Seismology, China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: Aiming at the thermal infrared anomaly in the epicentral area of Nepal M<inf>S</inf> 8.1 earthquake, this paper collected the infrared remote sensing brightness temperature data of China Geostationary Meteorological satellite FY-2C/E, and analyzed the data by using power spectrum transform method. The results showed that the thermal anomaly had obvious temporal and spatial characteristics, and the anomaly range was in irregular zonal distribution, which gradually expand over time and tend to peak when the earthquake occurred. The epicenter was always located in the edge of anomaly area, and the anomaly rapidly shrank after the earthquake until completely disappeared. The change process of thermal anomaly was divided into three stages, namely preliminary display, rapid development and gradual decay, whose duration was more than 45 days, characteristic period was 16 days, and the magnitude of relative variation was more than 12 times. Through the comparative study, we found that the evolution of thermal infrared characteristics in this earthquake was similar to Wenchuan earthquake, mainly reflected in the evolution process, morphology and the relationship of seismic moment and epicenter location with the anomaly area. These two earthquake cases only had different characteristic period and peak value, and this difference may be related to the regional stress, climatic factors and special geological environment. The cognizance in this paper had certain enlightenment function to determine the relationship between the thermal anomalies and the three elements of earthquake, and had a great significance to the thermal infrared monitoring and earthquake prediction. © 2017, Editorial Office of Earth Science Frontiers. All right reserved.
AUTHOR KEYWORDS: Nepal MS 8.1 earthquake; Relative power spectrum; Thermal-infrared brightness temperature; Wenchuan earthquake
INDEX KEYWORDS: Forecasting; Geophysics; Geostationary satellites; Infrared radiation; Luminance; Power spectrum; Remote sensing; Temperature; Brightness temperatures; Earthquake prediction; Geological environment; Geostationary meteorological satellites; Infrared remote sensing; Thermal infrared; Thermal infrared monitoring; Wenchuan Earthquake; Earthquakes
REFERENCES: Saraf, Arun Kumar, Satellite detection of earthquake thermal infrared precursors in Iran, Natural Hazards, 47, 1, pp. 119-135, (2008); 
Chinese Science Bulletin, (1991); 
Tronin, A. A., Thermal IR satellite data application for earthquake research in Japan and China, Journal of Geodynamics, 33, 4-5, pp. 519-534, (2002)
PUBLISHER: Science Frontiers editorial department frontier@cugb.edu.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Rapid and Accurate Prediction Method for Magnitude in Earthquake Early Warning for High Speed Railway
(2017) Zhongguo Tiedao Kexue/China Railway Science, 38 (2), pp. 127 - 132, Cited 6 times.
DOI: 10.3969/j.issn.1001-4632.2017.02.19
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019681485&doi=10.3969%2Fj.issn.1001-4632.2017.02.19&partnerID=40&md5=c85e600ed8b90d72902100553580b81c

AFFILIATIONS: School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: Based on the mode of the earthquake early warning (EEW) for high speed railway using single station required by the in-situ seismic network along railway line in China, the earthquake magnitude prediction method from the integral of the squared displacement was presented and compared with the methods of period parameter and displacement parameter. Using the records of the M<inf>s</inf>8.0 Wenchuan earthquake in 2008, the earthquake magnitude prediction formulas were derived respectively based on 3 characteristic parameters, namely, the integral of the squared displacement, average period and displacement amplitude. The prediction results were compared and it was known that, the standard deviation of the predicted magnitude difference of the method based on the integral of the squared displacement was the smallest. By analyzing the ground motion characteristics in the frequency domain, the correlations between the spectral intensity logarithm of 3 s initial P wave and prediction difference were studied, and then a method was proposed to revise the magnitude prediction difference. The revised prediction method could alleviate the phenomenon of “saturation” in predicting large earthquake magnitude; in addition, the predication accuracy was improved. The proposed magnitude prediction formula based on the integral of the squared displacement as well as the revision method can real-time predict the magnitude of impending earthquakes of complicated focal mechanisms with accuracy, speediness, effectiveness, which can meet the strict requirements of the EEW for high speed railway by single station. © 2017, Editorial Department of China Railway Science. All right reserved.
AUTHOR KEYWORDS: Average period; Displacement amplitude; Earthquake early warning; High speed railway; Integral of squared displacement; Magnitude prediction; Single station early warning
INDEX KEYWORDS: Forecasting; Frequency domain analysis; Geophysics; Railroad engineering; Railroad plant and structures; Railroad transportation; Railroads; Seismic waves; Transportation; Average period; Displacement amplitudes; Early warning; Earthquake early warning; High - speed railways; Integral of squared displacement; Earthquakes
REFERENCES: Nakamura, Yutaka, On an earthquake early warning system (EEW) and its applications, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 127-136, (2011); 
Nakatani, Masao, Size-dependent microearthquake initiation inferred from high-gain and low-noise observations at Nikko district, Japan, Journal of Geophysical Research: Solid Earth, 105, B12, pp. 28095-28109, (2000); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Wang, Zijun, Theatrical method and application of auto-rapid P and S waves recognition in earthquake early warning for high speed railway, Zhongguo Tiedao Kexue/China Railway Science, 37, 4, pp. 121-127, (2016); 
Nielsen, Stefan B., Can earthquake size be controlled by the initial seconds of rupture?, pp. 9-20, (2007); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Wang, Zijun, Fast and accurate prediction method for track ground motion in earthquake early warning for high speed railway, Zhongguo Tiedao Kexue/China Railway Science, 37, 6, pp. 128-134, (2016)
PUBLISHER: Chinese Academy of Railway Sciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Qi, W.
AUTHOR FULL NAMES: Yang, Wentao (55499294400); Qi, Wenwen (55524261400)
55499294400; 55524261400
Spatial-Temporal Dynamic Monitoring of Vegetation Recovery after the Wenchuan Earthquake
(2017) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10 (3), art. no. 7731240, pp. 868 - 876, Cited 24 times.
DOI: 10.1109/JSTARS.2016.2616511
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994223018&doi=10.1109%2FJSTARS.2016.2616511&partnerID=40&md5=838115c79499d2c79bcda982d1667a94

AFFILIATIONS: School of Soil and Water Conservation, Beijing Forestry University, Beijing, Beijing, China; Beijing Twenty-First Century Science and Technology Development Co., Ltd., Beijing, China
ABSTRACT: Mountainous vegetation recovery after major earthquakes has important implications for preventing postseismic soil erosion and geo-hazards. However, regional recovery processes of the postseismic vegetation and its spatial patterns have not been thoroughly studied. In this paper, we examined the vegetation recovery processes following the 2008 Wenchuan earthquake (Ms. 7.8) using 16-day interval MODIS normalized difference vegetation index time series from 2000 to 2014. The Savitzky-Golay filter and cross-correlogram spectral matching were used to eliminate the influences of cloud and intraannual phenology. Change vector analysis was applied to measure the postseismic vegetation recovery conditions for each year. We find that the heavily affected vegetation areas are mainly located along the southern part of the earthquake surface rupture. Additionally, five major affected vegetation types have been identified: shrubland, grassland, broadleaf/mixed, needleleaf, and plantation. Shrubland represents the largest fraction of vegetation type in the heavily affected area, whereas plantation comprises the smallest fraction of vegetation type in the heavily affected area. Further analysis indicates that the changing trend of postseismic vegetation conditions in the first six years can be grouped into three classes: recovering, fluctuating, and deteriorating. Recovering and fluctuating classes cover 59% and 37% of the heavily affected areas, respectively, and are the two dominant postseismic vegetation classes. In contrast, the deteriorating recovery class covers just 4% of the affected areas. The recovering vegetation is primarily located around the epicenter, and most of the fluctuating classes is located to the northeast of the epicenter. These results demonstrate that the Wenchuan earthquake has long-term and important influences on mountain vegetation, and more attention should be given to the locations of deteriorating and fluctuating vegetation following mountain disasters. © 2016 IEEE.
AUTHOR KEYWORDS: Postseismic geo-hazard; postseismic vegetation recovery; time series of remote sensing images; vegetation recovery classifications
INDEX KEYWORDS: Deterioration; Earthquakes; Geophysics; Recovery; 2008 wenchuan earthquakes; Change vector analysis; Cross correlogram spectral matching; Normalized difference vegetation index time series; Spatial temporals; Vegetation condition; Vegetation recovery; Wenchuan Earthquake; Vegetation; MODIS; monitoring; NDVI; postseismic process; remote sensing; Sichuan earthquake 2008; spatial analysis; temporal analysis; time series analysis; vegetation
REFERENCES: Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Wang, Ming, Diagnosis of vegetation recovery in mountainous regions after the wenchuan earthquake, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7, 7, pp. 3029-3037, (2014); 
Journal of Geophysical Research, (2004); 
Lin, Wentzu, Assessment of vegetation recovery and soil erosion at landslides caused by a catastrophic earthquake: A case study in Central Taiwan, Ecological Engineering, 28, 1, pp. 79-89, (2006); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Yang, Wentao, Using MODIS NDVI time series to identify geographic patterns of landslides in vegetated regions, IEEE Geoscience and Remote Sensing Letters, 10, 4, pp. 707-710, (2013); 
Lin, Chao Yuan, Vegetation recovery assessment at the Jou-Jou Mountain landslide area caused by the 921 Earthquake in Central Taiwan, Ecological Modelling, 176, 1-2, pp. 75-81, (2004); 
Lin, Wentzu, Earthquake-induced landslide hazard and vegetation recovery assessment using remotely sensed data and a neural network-based classifier: A case study in central Taiwan, Natural Hazards, 47, 3, pp. 331-347, (2008); 
Lin, Wentzu, Vegetation recovery monitoring and assessment at landslides caused by earthquake in Central Taiwan, Forest Ecology and Management, 210, 1-3, pp. 55-66, (2005)
PUBLISHER: Institute of Electrical and Electronics Engineers
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Huang, J., Pu, H., Han, Z., Li, W., Yan, B.
AUTHOR FULL NAMES: Li, Yange (55339639500); Huang, Jianling (50061249400); Pu, Hao (8689267000); Han, Zheng (55556913000); Li, Wei (58739708400); Yan, Bin (58710585400)
55339639500; 50061249400; 8689267000; 55556913000; 58739708400; 58710585400
Semiautomatic landslide detection using remote sensing and slope units
(2017) Transportation Research Record, 2604 (1), pp. 104 - 110, Cited 2 times.
DOI: 10.3141/2604-13
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054833382&doi=10.3141%2F2604-13&partnerID=40&md5=5a45ad687bfd4af8d8315ad34e0769dd

AFFILIATIONS: Central South University, Changsha, Hunan, China; Central South University, Changsha, Hunan, China
ABSTRACT: Landslides induced by earthquakes and rainfall pose severe threats to the infrastructure of highways and high-speed railways. To plan an immediate emergency response, the location and scale of these landslides should be known beforehand. Traditionally, to detect multitemporal landslides induced by earthquakes and the long-term effects, along with other factors such as subsequent rainfall, one had to carry out image classification multiple times to calculate the variance information. The accuracy of that method is affected by accumulated errors from multi-classification, and the process is very time-consuming. In this paper, a semiautomatic approach is proposed for rapid mapping of multitemporal landslides. The approach can obtain the variance information of each landslide event in one detection process. In addition, slope units are introduced to separate the extracted conjoined landslides. The area of Chenjiaba, China, which is located in the highest seismic intensity zone of the Wenchuan earthquake in Beichuan and had strong rainfall 4 months after the earthquake, was selected as a case study to demonstrate the validity of this methodology. Accuracy assessment was carried out by comparing extracted landslides with a manually prepared landslide inventory map. Correctly detected were 90.1% and 94.2% of earthquake-and rainfall-induced landslides, respectively. Results show that this approach is capable of mapping temporal landslides efficiently and quickly. © 2017, SAGE Publications Ltd. All rights reserved.
INDEX KEYWORDS: Classification (of information); Earthquakes; Mapping; Railroad plant and structures; Railroad transportation; Rain; Remote sensing; Emergency response; High-speed railways; Images classification; Landslide detection; Long-term effects; Multi-temporal; Remote-sensing; Sensing unit; Slope unit; Variance information; Landslides
REFERENCES: Han, Zheng, Numerical simulation for run-out extent of debris flows using an improved cellular automaton model, Bulletin of Engineering Geology and the Environment, 76, 3, pp. 961-974, (2017); 
Lato, Matthew J., Rock slopes asset management: Selecting the optimal three-dimensional remote sensing technology, Transportation Research Record, 2510, pp. 7-14, (2015); 
Nichol, Janet Elizabeth, Satellite remote sensing for detailed landslide inventories using change detection and image fusion, International Journal of Remote Sensing, 26, 9, pp. 1913-1926, (2005); 
Rau, Jiann Yeou, Dynamics monitoring and disaster assessment for watershed management using time-series satellite images, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1641-1649, (2007); 
Mondini, Alessandro C., Combining multiple change detection indices for mapping landslides triggered by typhoons, Geomorphology, 134, 3-4, pp. 440-451, (2011); 
Borghuis, A. M., Comparison between automated and manual mapping of typhoon-triggered landslides from SPOT-5 imagery, International Journal of Remote Sensing, 28, 8, pp. 1843-1856, (2007); 
Barlow, John, High spatial resolution satellite imagery, DEM derivatives, and image segmentation for the detection of mass wasting processes, Photogrammetric Engineering and Remote Sensing, 72, 6, pp. 687-692, (2006); 
Martha, Tapas Ranjan, Characterising spectral, spatial and morphometric properties of landslides for semi-automatic detection using object-oriented methods, Geomorphology, 116, 1-2, pp. 24-36, (2010); 
Otazu, Xavier, Introduction of Sensor Spectral Response into Image Fusion Methods. Application to Wavelet-Based Methods, IEEE Transactions on Geoscience and Remote Sensing, 43, 10, pp. 2376-2385, (2005); 
Pradhan, Pushkar S., Estimation of the number of decomposition levels for a wavelet-based multiresolution multisensor image fusion, IEEE Transactions on Geoscience and Remote Sensing, 44, 12, pp. 3674-3686, (2006)
PUBLISHER: SAGE Publications Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, S., Zhang, L.M.
AUTHOR FULL NAMES: Zhang, Shuai (55092670700); Zhang, Limin Min (58883008100)
55092670700; 58883008100
Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area
(2017) Geomorphology, 276, pp. 86 - 103, Cited 174 times.
DOI: 10.1016/j.geomorph.2016.10.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992089811&doi=10.1016%2Fj.geomorph.2016.10.009&partnerID=40&md5=922c06cdaaa8142d1ba115e5378cad86

AFFILIATIONS: Department of Civil & Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong; Technological and Higher Education Institute of Hong Kong, Hong Kong, Hong Kong
ABSTRACT: The 2008 Wenchuan earthquake triggered the largest number of landslides among the recent strong earthquake events around the world. The loose landslide materials were retained on steep terrains and deep gullies. In the period from 2008 to 2015, numerous debris flows occurred during rainstorms along the Provincial Road 303 (PR303) near the epicentre of the earthquake, causing serious damage to the reconstructed highway. Approximately 5.24 × 106 m3 of debris-flow sediment was deposited shortly after the earthquake. This paper evaluates the evolution of the debris flows that occurred after the Wenchuan earthquake, which helps understand long-term landscape evolution and cascading effects in regions impacted by mega earthquakes. With the aid of a GIS platform combined with field investigations, we continuously tracked movements of the loose deposit materials in all the debris flow gullies along an 18 km reach of PR303 and the characteristics of the regional debris flows during several storms in the past seven years. This paper presents five important aspects of the evolution of debris flows: (1) supply of debris flow materials; (2) triggering rainfall; (3) initiation mechanisms and types of debris flows; (4) runout characteristics; and (5) elevated riverbed due to the deposited materials from the debris flows. The hillslope soil deposits gradually evolved into channel deposits and the solid materials in the channels moved towards the ravine mouth. Accordingly, channelized debris flows became dominant gradually. Due to the decreasing source material volume and changes in debris flow characteristics, the triggering rainfall tends to increase from 30 mm h− 1 in 2008 to 64 mm h− 1 in 2013, and the runout distance tends to decrease over time. The runout materials blocked the river and elevated the riverbed by at least 30 m in parts of the study area. The changes in the post-seismic debris flow activity can be categorized into three stages, i.e., active, unstable, and recession. © 2016 Elsevier B.V.
AUTHOR KEYWORDS: Debris flow; Landslide; Slope stability; Wenchuan earthquake
INDEX KEYWORDS: debris flow; GIS; landscape evolution; landslide; rainfall; Sichuan earthquake 2008; slope stability; China; Sichuan; Wenchuan
REFERENCES: Geomorphology the Mechanics and Chemistry of Landscapes, (2010); 
Anderson, Scott A., Analysis of rainfall-induced debris flows, Journal of Geotechcnical Engineering, 121, 7, pp. 544-552, (1995); 
Berger, Catherine, Direct measurement of channel erosion by debris flows, Illgraben, Switzerland, Journal of Geophysical Research: Earth Surface, 116, 1, (2011); 
Chang, Chiwen, Estimation of sediment volume of debris flow caused by extreme rainfall in Taiwan, Engineering Geology, 123, 1-2, pp. 83-90, (2011); 
Chang, Dongsheng, Field testing of erodibility of two landslide dams triggered by the 12 May Wenchuan earthquake, Landslides, 8, 3, pp. 321-332, (2011); 
Chen, Hongey, Relationship between earthquake disturbance, tropical rainstorms and debris movement: An overview from Taiwan, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 161-186, (2009); 
Chen, Hongey, The impact of landslide and debris flows triggered by Typhoon Mindulle in Taiwan, Quarterly Journal of Engineering Geology and Hydrogeology, 38, 3, pp. 301-304, (2005); 
Chen, Hongxin, Mechanisms and runout characteristics of the rainfall-triggered debris flow in Xiaojiagou in Sichuan Province, China, Natural Hazards, 62, 3, pp. 1037-1057, (2012); 
Chen, Hongxin, Evolution of debris flow properties and physical interactions in debris-flow mixtures in the Wenchuan earthquake zone, Engineering Geology, 182, PB, pp. 136-147, (2014); 
Chiou, Shianjin, Evaluating landslides and sediment yields induced by the chi-chi earthquake and followed heavy rainfalls along the ta-chia river, Journal of GeoEngineering, 2, 2, pp. 73-83, (2007)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Qi, W., Wang, M., Zhang, J., Zhang, Y.
AUTHOR FULL NAMES: Yang, Wentao (55499294400); Qi, Wenwen (55524261400); Wang, Ming (55732001400); Zhang, Jianjun (8517716200); Zhang, Yan (56048922600)
55499294400; 55524261400; 55732001400; 8517716200; 56048922600
Spatial and temporal analyses of post-seismic landslide changes near the epicentre of the Wenchuan earthquake
(2017) Geomorphology, 276, pp. 8 - 15, Cited 69 times.
DOI: 10.1016/j.geomorph.2016.10.010
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991465725&doi=10.1016%2Fj.geomorph.2016.10.010&partnerID=40&md5=97d0c163c544d90640c9559e3e199c69

AFFILIATIONS: School of Soil and Water Conservation, Beijing Forestry University, Beijing, Beijing, China; Beijing Twenty-First Century Science and Technology Development Co., Ltd., Beijing, China; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: Major earthquakes in mountain regions have persistent and significant influences on post-seismic landslides but their details have not been well understood. This work uses multi-year high-resolution satellite images and terrain parameters, such as elevation, slope, and aspect, to examine the topographic changes of post-seismic landslides. Despite disturbances during rainy months, landslide areas decreased significantly from 2008 to 2013 in all terrain parameters, indicating that landslide activity near the epicentre has been recovering to the pre-seismic level. The emergence of an increasingly active landslide type shows that landslide debris has been moving from hillslopes to valleys, which could impact post-seismic debris flows. The findings of this work provide important information for post-seismic infrastructure re-construction and disaster prevention in future mountain earthquake events. © 2016 Elsevier B.V.
AUTHOR KEYWORDS: Debris flow; Post-seismic landslides; Remote sensing; Spatial and temporal changes
INDEX KEYWORDS: debris flow; earthquake epicenter; landslide; mountain region; postseismic process; remote sensing; satellite imagery; Sichuan earthquake 2008; spatiotemporal analysis; China; Sichuan; Wenchuan
REFERENCES: Angewandte Geographische Informationsverarbeitung Xii, (2000); 
Chen, Xiaoli, Evaluation of factors controlling large earthquake-induced landslides by the Wenchuan earthquake, Natural Hazards and Earth System Sciences, 12, 12, pp. 3645-3657, (2012); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Huang, Runqiu, The landslide story, Nature Geoscience, 6, 5, pp. 325-326, (2013); 
Jibson, Randall W., A method for producing digital probabilistic seismic landslide hazard maps, Engineering Geology, 58, 3-4, pp. 271-289, (2000); 
Khan, Shah Faisal, Documenting five years of landsliding after the 2005 Kashmir earthquake, using repeat photography, Geomorphology, 197, pp. 45-55, (2013); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Landslides, (2015)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, G.-H., Liu, H., Yao, K., Xia, J.
AUTHOR FULL NAMES: Liu, Guanghui (57193693449); Liu, Hanhu (9240308700); Yao, Kun (59588301200); Xia, Jie (57193699259)
57193693449; 9240308700; 59588301200; 57193699259
Based on the weights of evidence method and certainty factor method of landslide danger division comparative analysis - A case study in Hongkou, Chine
(2016) Wutan Huatan Jisuan Jishu, 38 (6), pp. 848 - 853, Cited 2 times.
DOI: 10.3969/j.issn.1001-1749.2016.06.21
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015935640&doi=10.3969%2Fj.issn.1001-1749.2016.06.21&partnerID=40&md5=cad21100816a982076978ebe58a67c7e

AFFILIATIONS: Chengdu University, Chengdu, Sichuan, China; College of Eong Sciences, Ministry of Natural Resources of the People's Republic of China, Beijing, China; Key Laboratory of Geological Spatial Information Technology, Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: Hongkou township in Dujiangyan is a national scenic spot. After Wenchuan earthquake, landslides frequently occur in this area, which greatly threatens personal and property safety of tourists and residents there. Thus, it becomes significantly important to develop forecast to the landslide dangerous area of this region. This article based on GIS platform, takes geologic map, topographic map, DEM elevation data, QuickBird image as data sources, selects 6 evaluation factors of stratigraphic lithology, structure, elevation, slope, slope direction and water system, applies to weight of evidence method, determination coefficient method to make comparative analysis to the analytical methods of landslide dangers in research area and find out the best research method to landslide risk area. The analysis shows that, accuracy rate of determination coefficient method is 0. 7732, while weight of evidence method has 0. 7216 accuracy rate. After field research, the risk area predicated by method of determination coefficient can match practical situation more with high accuracy. Thus determination coefficient method is more fitness for the research of landslide risk area in Hongkou Township.
AUTHOR KEYWORDS: Certainty factor; GIS; Landslides; Weights of evidence
INDEX KEYWORDS: comparative study; digital elevation model; geological mapping; GIS; landslide; QuickBird; topographic mapping; China; Dujiangyan; Sichuan
REFERENCES: Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000); 
Journal of Catastrophology, (2015); 
Wang, Zhiwang, Zonation of landslide hazards based on weights of evidence model, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 29, 8, pp. 1268-1273, (2007); 
Hydrogeology Engineering Geology, (2012); 
Xu, Chong, Earthquake triggered landslide susceptibility evaluation based on GIS platform and weight-of-evidence modeling, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36, 6, pp. 1155-1164, (2011); 
Xu, Chong, The Yushu earthquake triggered landslide hazard evaluation based on weight of evidence method, Dizhen Dizhi, 35, 1, pp. 151-164, (2013); 
Journal of Engineering Geology, (2010); 
Journal of Engineering Geology, (2014); 
Xu, Chong, GIS based certainty factor analysis of landslide triggering factors in Wenchuan earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 29, SUPPL. 1, pp. 2972-2981, (2010); 
Wen, Shouqin, Application of GIS technology in the regionalization of geological hazards, Geology in China, 32, 3, pp. 516-517, (2005)
PUBLISHER: China National Publications Import and Export (Group) Corporation BKCK@cnpiec.com.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, J.-Z., Cao, M.-M., Qiu, H.-J., Xue, B., Hu, S., Cui, P.
AUTHOR FULL NAMES: Li, Jingzhong (54787885800); Cao, Mingming (37103472100); Qiu, Haijun (55978640200); Xue, Bing (55724067800); Hu, Sheng (55978691800); Cui, Peng (56706923500)
54787885800; 37103472100; 55978640200; 55724067800; 55978691800; 56706923500
Spatial-temporal process and characteristics of vegetation recovery after Wenchuan earthquake: A case study in Longxi River basin of Dujiangyan, China
(2016) Chinese Journal of Applied Ecology, 27 (11), pp. 3479 - 3486, Cited 13 times.
DOI: 10.13287/j.1001-9332.201611.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007524189&doi=10.13287%2Fj.1001-9332.201611.011&partnerID=40&md5=18a5be3f42681960cd160673f9f88ff6

AFFILIATIONS: College of Urban and Environmental Sciences, Northwest University, Xi'an, Shaanxi, China; College of Urban Planning and Landscape Garden, Xuchang University, Xuchang, Henan, China; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, China; Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Quantitative evaluation on the vegetation recovery after the earthquake is of great scientific significance for local ecological system rebuilding and regional social-economic sustainable development. By taking the Longxi River Basin in Dujiangyan of Sichuan Province as an example, and employing the MODIS-NDVI time-series data, this paper illustrated the dynamic changes of the vegetation cover rates in Longxi River basin before and after the"5.12"Wenchuan Earthquake by using Landsat data, and then time-space characters of the recovery rates of the damaged vegetation was quantified structurally by referring the factors of river-system and terrain. The results showed that the recovery of impaired vegetation coverage worked well from a holistic point of view, but the response of vegetation coverage to earthquake disaster showed a lagging-phenomenon. The recovery rate of damaged vegetation was significantly correlated to its distance to surrounding river systems, elevation, slope degree, and slope aspect. This finding could provide technical supports for decision-makers to intervene the recovering process after earthquake. © 2016, Science Press. All right reserved.
AUTHOR KEYWORDS: Longxi River; Remote sensing; Vegetation coverage; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: decision making; Landsat; quantitative analysis; regeneration; remote sensing; river basin; river system; satellite data; Sichuan earthquake 2008; spatiotemporal analysis; sustainable development; vegetation cover; China; Gansu; Longxi; disaster; earthquake; ecosystem; environmental monitoring; plant; plant development; river; Disasters; Earthquakes; Ecosystem; Environmental Monitoring; Plant Development; Plants; Rivers; Spatio-Temporal Analysis
REFERENCES: Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Cui, Xia, Using remote sensing to quantify vegetation change and ecological resilience in a semi-arid system, Land, 2, 2, pp. 108-130, (2013); 
Wu, Ning, A review of the impacts of earthquake on mountain ecosystems: Taking 5.12 Wenchuan Earthquake as an example, Shengtai Xuebao, 28, 12, pp. 5810-5819, (2008); 
Jiao, Quanjun, Assessment of spatio-temporal variations in vegetation recovery after the Wenchuan earthquake using Landsat data, Natural Hazards, 70, 2, pp. 1309-1326, (2014); 
Wan, Hongmei, Estimation of desert vegetation coverage based on multi-source remote sensing data, Chinese Journal of Applied Ecology, 23, 12, pp. 3331-3337, (2012); 
Yang, Chiming, Chi-Chi Earthquake-caused landslide: Grey prediction model for pioneer vegetation recovery monitored by satellite images, Botanical Bulletin of Academia Sinica, 43, 1, pp. 69-75, (2002); 
Lin, Chao Yuan, Vegetation recovery assessment at the Jou-Jou Mountain landslide area caused by the 921 Earthquake in Central Taiwan, Ecological Modelling, 176, 1-2, pp. 75-81, (2004); 
Lin, Wentzu, Vegetation recovery monitoring and assessment at landslides caused by earthquake in Central Taiwan, Forest Ecology and Management, 210, 1-3, pp. 55-66, (2005); 
Lin, Wentzu, Assessment of vegetation recovery and soil erosion at landslides caused by a catastrophic earthquake: A case study in Central Taiwan, Ecological Engineering, 28, 1, pp. 79-89, (2006); 
Bulletin of Botanical Research, (2012)
PUBLISHER: Editorial Board of Chinese Journal of Applied Ecology zxs@jae.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Fast and accurate prediction method for track ground motion in earthquake early warning for high speed railway
(2016) Zhongguo Tiedao Kexue/China Railway Science, 37 (6), pp. 128 - 134, Cited 9 times.
DOI: 10.3969/j.issn.1001-4632.2016.06.17
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006416117&doi=10.3969%2Fj.issn.1001-4632.2016.06.17&partnerID=40&md5=2ff9600064d4de12bd0c4f11d9281d59

AFFILIATIONS: School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: Based on the mode of earthquake early warning (EEW) for high speed railway using single station required by the in situ seismic monitoring network along railway line in China, we proposed a fast and accurate prediction method for track ground motion in the EEW for high speed railway suitable for single station early warning. The spectral intensity, displacement amplitude and squared velocity integral of 3 s initial P wave were selected as the characteristic parameters for predicting ground motion. The aftershock records of the M<inf>s</inf>8.0 Wenchuan earthquake in 2008 were used to establish the fitting relationships among these three characteristic parameters and three ground motion parameters to be predicted (peak acceleration, peak velocity and spectral intensity), and then the prediction formulas for three ground motion parameters were derived. Comparison results show that the proposed method for predicting the peak acceleration of ground motion based on the spectral intensity of 3 s initial P wave is more suitable for predicting the track ground motion in EEW of high speed railway in China. Aiming at large magnitude earthquakes, i.e. the Wenchuan main shock, an amplification coefficient is introduced into the prediction formula of ground motion parameters to revise the characteristic parameters in advance. Accordingly, the fast and accurate prediction for the subsequent ground motion of large earthquake can be achieved and the phenomenon of “underestimation” in predicting the ground motion of large magnitude earthquake is alleviated. © 2016, Editorial Department of China Railway Science. All right reserved.
AUTHOR KEYWORDS: Earthquake early warning; Ground motion prediction; High speed railway; Initial P wave; Single station early warning; Spectral intensity
INDEX KEYWORDS: Forecasting; Motion estimation; Railroad plant and structures; Railroad transportation; Railroads; Seismic waves; Speed; Early warning; Earthquake early warning; Ground motion prediction; High - speed railways; P waves; Spectral intensity; Earthquakes
REFERENCES: Nakamura, Yutaka, On an earthquake early warning system (EEW) and its applications, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 127-136, (2011); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Journal of Structural Mechanics and Earthquake Engineering, (1996); 
Wu, Yih-Min Min, Experiment on an onsite early warning method for the Taiwan early warning system, Bulletin of the Seismological Society of America, 95, 1, pp. 347-353, (2005); 
Wang, Zijun, Correlations between structural damage and ground motion parameters during the Ms8.0 Wenchuan Earthquake, Soil Dynamics and Earthquake Engineering, 72, pp. 129-137, (2015); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Zollo, Aldo, A threshold-based earthquake early warning using dense accelerometer networks, Geophysical Journal International, 183, 2, pp. 963-974, (2010); 
Colombelli, Simona, A P wave-based, on-site method for earthquake early warning, Geophysical Research Letters, 42, 5, pp. 1390-1398, (2015); 
Festa, Gaetano, Earthquake magnitude estimation from early radiated energy, Geophysical Research Letters, 35, 22, (2008); 
Brondi, Piero, Predicting the macroseismic intensity from early radiated P wave energy for on-site earthquake early warning in Italy, Journal of Geophysical Research: Solid Earth, 120, 10, pp. 7174-7189, (2015)
PUBLISHER: Chinese Academy of Railway Sciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yuen, K.-V., Ortiz, G.A., Huang, K.
AUTHOR FULL NAMES: Yuen, Ka Veng (7202333739); Ortiz, Gilberto A. (55490875300); Huang, Ke (57191332317)
7202333739; 55490875300; 57191332317
Novel nonparametric modeling of seismic attenuation and directivity relationship
(2016) Computer Methods in Applied Mechanics and Engineering, 311, pp. 537 - 555, Cited 27 times.
DOI: 10.1016/j.cma.2016.09.004
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988835630&doi=10.1016%2Fj.cma.2016.09.004&partnerID=40&md5=ba6f2c7f8457b22b29199cb96f8c5a5e

AFFILIATIONS: Department of Civil & Environmental Engineering, University of Macau, Taipa, Macao
ABSTRACT: Seismic attenuation modeling is a core element in earthquake disaster assessment and earthquake early warning. In this paper, a novel nonparametric methodology, namely Bayesian Nonparametric General Regression (BNGR), is introduced for the modeling of peak ground acceleration attenuation relationship. In contrast to most existing methods, this method does not require a prescribed functional form of the attenuation relationship. Furthermore, it selects the proper set of variables necessary to model this relationship. Moreover, the proposed model does not only consider the epicentral distance but also the location of the measured station so it allows for the modeling of the attenuation directivity. The proposed method is demonstrated with a case study using a comprehensive database of ground motion records at 271 monitoring stations for the 2008 Ms 8.0 Wenchuan earthquake. Results show that the proposed methodology is capable to represent the seismic attenuation relationship. Furthermore, the contour plots of the peak ground acceleration provides valuable information for the study of the earthquake directivity characteristics. © 2016 Elsevier B.V.
AUTHOR KEYWORDS: Bayesian inference; General regression; Model selection; Nonparametric regression; Peak ground acceleration; Seismic attenuation
INDEX KEYWORDS: Bayesian networks; Inference engines; Regression analysis; Bayesian inference; General regression; Model Selection; Non-parametric regression; Peak ground acceleration; Seismic attenuation; Earthquakes
REFERENCES: Bull Seism Soc Am, (1981); 
Bulletin of the Seismological Society of America, (1984); 
Bulletin of the Seismological Society of America, (1985); 
Earthquake Spectra, (1991); 
Joyner, William B., Methods for regression analysis of strong-motion data, Bulletin of the Seismological Society of America, 83, 2, pp. 469-487, (1993); 
Ambraseys, Nicholas N., The prediction of earthquake peak ground acceleration in europe, Earthquake Engineering and Structural Dynamics, 24, 4, pp. 467-490, (1995); 
Atkinson, Gail Marie, Ground-motion relations for eastern North America, Bulletin of the Seismological Society of America, 85, 1, pp. 17-30, (1995); 
Wald, David Jay, Relationships between peak ground acceleration, peak ground velocity, and modified mercalli intensity in California, Earthquake Spectra, 15, 3, pp. 557-564, (1999); 
Wu, Yih-Min Min, Near real-time mapping of peak ground acceleration and peak ground velocity following a strong earthquake, Bulletin of the Seismological Society of America, 91, 5, pp. 1218-1228, (2001); 
Chandler, Adrian M., An attenuation model for distant earthquakes, Earthquake Engineering and Structural Dynamics, 33, 2, pp. 183-210, (2004)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Sun, J., Vu, T.T.
AUTHOR FULL NAMES: Sun, Jing (57216906696); Vu, Tuong Thuy (59121316400)
57216906696; 59121316400
Distributed and hierarchical object-based image analysis for damage assessment: a case study of 2008 Wenchuan earthquake, China
(2016) Geomatics, Natural Hazards and Risk, 7 (6), pp. 1962 - 1972, Cited 4 times.
DOI: 10.1080/19475705.2016.1171257
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964452817&doi=10.1080%2F19475705.2016.1171257&partnerID=40&md5=67eebfbcd967b5f7efac92a59ab39654

AFFILIATIONS: Division of Geoinformatics, The Royal Institute of Technology (KTH), Stockholm, Stockholms, Sweden; School of Geography, The University of Nottingham Malaysia Campus, Semenyih, Selangor, Malaysia
ABSTRACT: Object-based image analysis (OBIA) is an emerging technique for analyzing remote sensing image based on object properties including spectral, geometry, contextual and texture information. To reduce the computational cost of this comprehensive OBIA and make it more feasible in disaster responses, we developed a unique approach – distributed and hierarchical OBIA approach for damage assessment. This study demonstrated a completed classification of YingXiu town, heavily devastated by the 2008 Wenchuan earthquake using Quickbrid imagery. Two distinctive areas, mountainous areas and urban, were analyzed separately. This approach does not require substantial processing power and large amounts of available memory because image of a large disaster-affected area was split in smaller pieces. Two or more computers could be used in parallel to process and analyze these sub-images based on different requirements. The approach can be applicable in other cases whereas the established set of rules can be adopted in similar study areas. More experiments will be carried out in future studies to prove its feasibility. © 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: earthquake; geomorphology; landslides; remote sensing; Seismic zones
INDEX KEYWORDS: Damage detection; Disasters; Earthquakes; Geomorphology; Landslides; Remote sensing; 2008 wenchuan earthquakes; Computational costs; Damage assessments; Hierarchical objects; Object based image analysis (OBIA); Remote sensing images; Seismic zones; Texture information; Image analysis
REFERENCES: Akçay, Huseyin Gökhan, Automatic detection of geospatial objects using multiple hierarchical segmentations, IEEE Transactions on Geoscience and Remote Sensing, 46, 7, pp. 2097-2111, (2008); 
Aksoy, Beliz, Landslide identification and classification by object-based image analysis and fuzzy logic: An example from the Azdavay region (Kastamonu, Turkey), Computers and Geosciences, 38, 1, pp. 87-98, (2012); 
Blaschke, Thomas, Object based image analysis for remote sensing, ISPRS Journal of Photogrammetry and Remote Sensing, 65, 1, pp. 2-16, (2010); 
Burnett, Charles, A multi-scale segmentation/object relationship modelling methodology for landscape analysis, Ecological Modelling, 168, 3, pp. 233-249, (2003); 
Cortes, Corinna, Support-Vector Networks, Machine Learning, 20, 3, pp. 273-297, (1995); 
Ecognition Developer 8 User Guide, (2009); 
Doxani, Georgia, Monitoring urban changes based on scale-space filtering and object-oriented classification, International Journal of Applied Earth Observation and Geoinformation, 15, 1, pp. 38-48, (2012); 
Gong, Jianhuaa Hua, Impacts of the Wenchuan Earthquake on the Chaping River upstream channel change, International Journal of Remote Sensing, 33, 12, pp. 3907-3929, (2012); 
Hussain, Ejaz, Building extraction and rubble mapping for city Port-au-Prince post-2010 earthquake with GeoEye-1 imagery and lidar data, Photogrammetric Engineering and Remote Sensing, 77, 10, pp. 1011-1023, (2011); 
Li, Peijun, Urban building damage detection from very high resolution imagery using OCSVM and spatial features, International Journal of Remote Sensing, 31, 13, pp. 3393-3409, (2010)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Cao, C., Yang, B., Xu, M., Li, X., Singh, R.P., Zhao, X., Chen, W.
AUTHOR FULL NAMES: Cao, Chunxiang (14031191400); Yang, Bin (57223778714); Xu, Min (57734835000); Li, Xiaowen (24755928100); Singh, Ramesh P. (57207365326); Zhao, Xiaojie (7407542291); Chen, Wei (58735368000)
14031191400; 57223778714; 57734835000; 24755928100; 57207365326; 7407542291; 58735368000
Evaluation and analysis of post-seismic restoration of ecological security in Wenchuan using remote sensing and GIS
(2016) Geomatics, Natural Hazards and Risk, 7 (6), pp. 1919 - 1936, Cited 20 times.
DOI: 10.1080/19475705.2015.1084952
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951870880&doi=10.1080%2F19475705.2015.1084952&partnerID=40&md5=c518041e2c058b77d602ab81daca9bec

AFFILIATIONS: Beijing Normal University, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; School of Life and Environmental Sciences, Chapman University, Orange, CA, United States
ABSTRACT: Aiming at studying the ecological security in Wenchuan, China, where the ecological system had been greatly damaged by the earthquake in 2008, an evaluation indicators system was established based on the pressure–state–response (PSR) model, and the indicators were derived from remote sensing images, meteorological data, and statistical data. Ecological security indexes in 2007, 2008, and 2013 were calculated through a comprehensive index method. Then the spatio-temporal analysis on ecological security was conducted. Particularly, the changes of ecological security were centrally analyzed concerning topography, land use types, vegetation coverage, as well as ecological PSR. It is found that the ecological security in Wenchuan presented a distinct vertical-belt distribution. It was damaged by the earthquake, however, it had been improved obviously by 2013, which still did not reach the level in 2007. Meanwhile, the epicentre, the Minjiang River and the southwestern mountains have typically regional characteristics, where the changes of ecological security were analyzed elaborately. The ecological security of these regions had been differently restored compared with 2007. However, there were still some regions with unsafe ecological security. Finally, the studied area was divided into four regions with different protection strategies and some recommendations were provided for further ecological protection. © 2015 Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: analytic hierarchy process; ecological evaluation; ecological security; pressure–state–response; spatio-temporal analysis; Wenchuan earthquake
INDEX KEYWORDS: Analytic hierarchy process; Earthquakes; Geographic information systems; Geophysics; Image reconstruction; Land use; Meteorology; Remote sensing; Restoration; Comprehensive index method; Ecological evaluation; Ecological security; Evaluation and analysis; Regional characteristics; Remote sensing and GIS; Spatiotemporal analysis; Wenchuan Earthquake; Ecology
REFERENCES: Adriaenssens, Veronique, Fuzzy rule-based models for decision support in ecosystem management, Science of the Total Environment, 319, 1-3, pp. 1-12, (2004); 
Cabello, Javier, The ecosystem functioning dimension in conservation: Insights from remote sensing, Biodiversity and Conservation, 21, 13, pp. 3287-3305, (2012); 
Chunxiang, Cao, Epidemic risk analysis after the Wenchuan Earthquake using remote sensing, International Journal of Remote Sensing, 31, 13, pp. 3631-3642, (2010); 
Progress in Geography, (2005); 
Gonca Coskun, H., Remote sensing and gis techniques for temporal evaluation of environmental impacts on major drinking water dam and basin of metropolis Istanbul, Fresenius Environmental Bulletin, 18, 3, pp. 261-269, (2009); 
Ecological Security an Evolutionary Perspective on Globalization, (2004); 
Urban Environ Urban Ecol, (2011); 
Du, Peijun, Evaluation of the spatio-temporal pattern of urban ecological security using remote sensing and GIS, International Journal of Remote Sensing, 34, 3, pp. 848-863, (2013); 
Gong, Jianzhou, Urban ecological security assessment and forecasting, based on a cellular automata model: A case study of Guangzhou, China, Ecological Modelling, 220, 24, pp. 3612-3620, (2009); 
Guo, Huadong, Dynamic analysis of the Wenchuan Earthquake disaster and reconstruction with 3-year remote sensing data, International Journal of Digital Earth, 3, 4, pp. 355-364, (2010)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Zhang, S., Pei, X., Zhang, X., Ran, C., Ma, J.
AUTHOR FULL NAMES: Zhang, Shishu (55938165600); Pei, Xiangjun (14058672500); Zhang, Xiong (55864284400); Ran, Congyan (56411739600); Ma, Jingen (57192586086)
55938165600; 14058672500; 55864284400; 56411739600; 57192586086
Source development and slope gradient effect of debris flow source in earthquake zone
(2016) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 35, pp. 4139 - 4147, Cited 3 times.
DOI: 10.13722/j.cnki.jrme.2016.1134
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006862394&doi=10.13722%2Fj.cnki.jrme.2016.1134&partnerID=40&md5=4f4701693565b0d61c96e960c16761e6

AFFILIATIONS: PowerChina Chengdu Engineering Corporation Limited, Chengdu, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The geological hazard triggered by Wenchuan earthquake was characterized by great damage, huge volume and great quantity. It resulted in huge increasing of the potential material of debris flow in the earthquake area. Thus, the frequency and volume of debris increased after the earthquake. The investigation of the potential debris material along Duwen highway was conducted. The statistic of spatial distribution of debris was performed by GIS. The effect of gradient on debris erosion was analyzed. The results showed that, the hazard area and volume followed the model. The density of hazard was largest in the granitic area. The hazard mainly occurred on the slopes in the gradient range of 40°-50°, in the exposure range of 120°-150° and in the elevation range of 1400-2800 m. Meanwhile, it increased with increasing earthquake intensity and the distance to the surface rupture of the Wenchuan earthquake. The occurrence of the hazard followed the"hanging wall effect"and"topographic effect". The maximum value of flow velocity of the debris was reached at slope gradient of 60° and the critical slope gradient for debris erosion was in the range of 42.4°-48.1°. © 2016, Science Press. All right reserved.
AUTHOR KEYWORDS: Debris flow; Distribution rule; Erosion; Geology engineering; Slope gradient effect; Source
INDEX KEYWORDS: Earthquakes; Engineering geology; Erosion; Flow velocity; Geology; Geophysics; Hazards; Critical slope gradients; Debris flows; Distribution rule; Earthquake intensity; Hanging-wall effects; Potential materials; Slope gradients; Source; Debris
REFERENCES: Journal of Engineering Geology, (2008); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011); 
Guzzetti, Fausto, Distribution of landslides in the Upper Tiber River basin, central Italy, Geomorphology, 96, 1-2, pp. 105-122, (2008); 
Hovius, Niels, Sediment flux from a mountain belt derived by landslide mapping, Geology, 25, 3, pp. 231-234, (1997); 
Tseng, Chihming, Application of a multi-temporal, LiDAR-derived, digital terrain model in a landslide-volume estimation, Earth Surface Processes and Landforms, 38, 13, pp. 1587-1601, (2013); 
Korup, Oliver, Effects of large deep-seated landslides on hillslope morphology, western Southern Alps, New Zealand, Journal of Geophysical Research: Earth Surface, 111, 1, (2006); 
Advances in Mechanics, (2004); 
Wu, Yong, Hydraulic mechanism of gully bed erosion by debris flow in rainfall, Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science), 47, 9, pp. 1585-1592, (2013); 
Ouyang, Chaojun, Numerical analysis of dynamics of debris flow over erodible beds in Wenchuan earthquake-induced area, Engineering Geology, 194, pp. 62-72, (2015); 
Zhuang, Jianqi, Research on debris flow initiation due to bed failure after Wenchuan earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 230-236, (2010)
PUBLISHER: Academia Sinica kjwang@public.wh.hb.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Duan, X., Qi, P., Tian, Z.
AUTHOR FULL NAMES: Duan, Xifa (36604262900); Qi, Peiyan (26029963800); Tian, Zheng (7202984846)
36604262900; 26029963800; 7202984846
Registration for Variform Object of Remote-Sensing Image Using Improved Robust Weighted Kernel Principal Component Analysis
(2016) Journal of the Indian Society of Remote Sensing, 44 (5), pp. 675 - 686, Cited 4 times.
DOI: 10.1007/s12524-015-0545-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975744434&doi=10.1007%2Fs12524-015-0545-2&partnerID=40&md5=c376559a36cd26a7e03c4b63e734a6ed

AFFILIATIONS: Department of Applied Mathematics, Taiyuan University of Science and Technology, Taiyuan, China; Department of Applied Mathematics, Northwestern Polytechnical University, Xi'an, Shaanxi, China
ABSTRACT: For pre- and post-earthquake remote-sensing images, registration is a challenging task due to the possible deformations of the objects to be registered. To overcome this problem, in a previous paper, we proposed a registration method based on robust weighted kernel principal component analysis (RWKPCA) to precisely register the variform objects. Which was proved very effective in capturing the common robust kernel principal components (RKPCs) and generalized well for registration. Compared with previous paper, there are two improvements in this paper: Firstly, we developed the improved RWKPCA method from the robust loss function, and theoretically proved the robustness of the method; Secondly, a new construction of weight function by projection residual was given, which enables the great reduction of computing time. Finally, two experiments were conducted on the remote-sensing image registration in Wenchuan earthquake and change detection of Tangjiashan barrier lake, and the results showed that compared with the previous method, the registration accuracy was increased while the computational time was decreased a lot. Meanwhile, good performance on the change detection of barrier lake is obtained. © 2016, Indian Society of Remote Sensing.
AUTHOR KEYWORDS: Graph spectral method; Improved robust weighted KPCA; Kernel principal component analysis (KPCA); Outliers; Remote-sensing image; Variform object
INDEX KEYWORDS: accuracy assessment; graphical method; image analysis; numerical method; remote sensing; Sichuan earthquake 2008; spectral analysis; China; Sichuan; Tangjiashan Lake; Wenchuan
REFERENCES: Alzate, Carlos, Kernel component analysis using an epsilon-insensitive robust loss function, IEEE Transactions on Neural Networks, 19, 9, pp. 1583-1598, (2008); 
Caelli, Terry M., An eigenspace projection clustering method for inexact graph matching, IEEE Transactions on Pattern Analysis and Machine Intelligence, 26, 4, pp. 515-519, (2004); 
Dhillon, Inderjit S., Weighted graph cuts without eigenvectors a multilevel approach, IEEE Transactions on Pattern Analysis and Machine Intelligence, 29, 11, pp. 1944-1957, (2007); 
Ding, Mingtao, Registration using robust kernel principal component for object-based change detection, IEEE Geoscience and Remote Sensing Letters, 7, 4, pp. 761-765, (2010); 
Duan, Xifa, Registration of remote-sensing images using robust weighted kernel principal component analysis, AEU - International Journal of Electronics and Communications, 67, 1, pp. 20-28, (2013); 
Han, Jungong, Visible and infrared image registration in man-made environments employing hybrid visual features, Pattern Recognition Letters, 34, 1, pp. 42-51, (2013); 
He, Ran, Robust principal component analysis based on maximum correntropy criterion, IEEE Transactions on Image Processing, 20, 6, pp. 1485-1494, (2011); 
He, Xiaochen, Curvature scale space corner detector with adaptive threshold and dynamic region of support, Proceedings - International Conference on Pattern Recognition, 2, pp. 791-794, (2004); 
Huang, Su-Yun, Robust Kernel principal component analysis, Neural Computation, 21, 11, pp. 3179-3213, (2009); 
Robust Statistics, (1981)
PUBLISHER: Springer India sanjiv.goswami@springer.co.in
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cui, Y., Du, J., Li, Y., Guo, Q.-N.
AUTHOR FULL NAMES: Cui, Yueju (36717262300); Du, Jianguo (7402574923); Li, Ying (55763793522); Guo, Qiuna (57195056812)
36717262300; 7402574923; 55763793522; 57195056812
Detecting anomalies of atmospheric total column ch4 and co related to the 2008 Wenchuan Ms8. 0 and 2013 Lushan Ms7. 0 Earthquakes
(2016) Bulletin of Mineralogy Petrology and Geochemistry, 35 (5), pp. 1022 - 1027, Cited 9 times.
DOI: 10.3969/j.issn.1007-2802.2016.05.023
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025073512&doi=10.3969%2Fj.issn.1007-2802.2016.05.023&partnerID=40&md5=f922f8c653d2d90944763adb8ccd3ec9

AFFILIATIONS: China Earthquake Administration, Beijing, China; Earthquake Defense Center, Heibei Seismological Bureau, China
ABSTRACT: In order to promote the application of satellite-remote-sensing geochemistry in monitoring earthquake, anomalies of atmospheric total column CH4 and CO related to 2008 Wenchuan MS 8. 0 and 2013 Lushan MS7. 0 earthquakes were investigated. In this study, we used difference value and anomaly index methods with satellite high-spectrum data to examine the anomaly. The CH4 and CO anomalies related to Wenchuan earthquake appeared along the NE Longmenshan and NW Xingjing-Mabian faults with the maximum in the intersection of these two faults in the month when earthquake happened. The CH4 and CO anomalies related to Lushan earthquake were affected by Wenchuan earthquake. Their maximum anomalies occurred 3 months before Lushan earthquake and were much higher than those caused by Wenchuan earthquake. CH4 anomalies appeared in the epicenter area with ringlike shape and high value core, while CO anomalies were linearly distributed along the Xingjing-Mabian Fault. These features of remote-sensing geochemical anomalies indicate that spatio- temporal distribution of atmospheric CH4 and CO anomalies may be attributed to the great earthquakes and associated fault activities.
AUTHOR KEYWORDS: Anomaly index; Carbon monoxide; Lushan earthquake; Methane; Wenchuan earthquake
INDEX KEYWORDS: atmospheric chemistry; carbon monoxide; geochemistry; Lushan earthquake 2013; methane; remote sensing; Sichuan earthquake 2008; spatiotemporal analysis; China; Longmen Mountains
REFERENCES: Aumann, Hartmut H.G., AIRS/AMSU/HSB on the aqua mission: Design, science objectives, data products, and processing systems, IEEE Transactions on Geoscience and Remote Sensing, 41, 2, pp. 253-264, (2003); 
Optical Remote Sensing OSA Technical Digest, (2003); 
Cui, Yueju, Anomalies of total column CO and O3 associated with great earthquakes in recent years, Natural Hazards and Earth System Sciences, 13, 10, pp. 2513-2519, (2013); 
Fu, Bihong, Surface deformation related to the 2008 Wenchuan earthquake, and mountain building of the Longmen Shan, eastern Tibetan Plateau, Journal of Asian Earth Sciences, 40, 4, pp. 805-824, (2011); 
Irwin, William Porter, Tectonic relations of carbon dioxide discharges and earthquakes., Journal of Geophysical Research, 85, B6, pp. 3115-3121, (1980); 
Li, Ying, Geochemical characteristics of soil gas in the Yanhuai basin, northern China, Earthquake Science, 22, 1, pp. 93-100, (2009); 
McConnell, J. C., Nature publishing group, Nature, 233, 5316, pp. 187-188, (1971); 
McMillan, W. Wallace, Daily global maps of carbon monoxide from NASA's Atmospheric Infrared Sounder, Geophysical Research Letters, 32, 11, pp. 1-4, (2005); 
Ouzounov, D., Outgoing long wave radiation variability from IR satellite data prior to major earthquakes, Tectonophysics, 431, 1-4, pp. 211-220, (2007); 
Singh, Ramesh P., Satellite detection of carbon monoxide emission prior to the Gujarat earthquake of 26 January 2001, Applied Geochemistry, 25, 4, pp. 580-585, (2010)
PUBLISHER: China Association for Science and Technology zengyiqiang@vip.gyig.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Song, D.-M., Zang, L., Shan, X.-J., Yuan, Y., Cui, J.-Y., Shao, H.-M., Shen, C., Shi, H.-T.
AUTHOR FULL NAMES: Song, Dongmei (56427407300); Zang, Lin (56814445900); Shan, Xianjian (7101712284); Yuan, Yuan (59626292600); Cui, Jianyong (56814102700); Shao, Hongmei (15052466400); Shen, Chen (56427346800); Shi, Hongtao (56814110800)
56427407300; 56814445900; 7101712284; 59626292600; 56814102700; 15052466400; 56427346800; 56814110800
A study on the algorithm for extracting earthquake thermal infrared anomalies based on the yearly trend of LST
(2016) Dizhen Dizhi, 38 (3), pp. 680 - 695, Cited 18 times.
DOI: 10.3969/j.issn.0253-4967.2016.03.014
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991759955&doi=10.3969%2Fj.issn.0253-4967.2016.03.014&partnerID=40&md5=5afb4cd4d11b008236ca059d4ad2a164

AFFILIATIONS: School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong, China; Graduate School, China University of Petroleum (East China), Qingdao, Shandong, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Shanghai Earthquake Agency, Shanghai, China; College of Sciences, China University of Petroleum (East China), Qingdao, Shandong, China
ABSTRACT: There are thermal infrared anomalies (TIA) before earthquake, and TIA has become one of the important parameters for assessing regional earthquake risk. However, not all of the surface infrared anomalies are related to tectonic activities or earthquakes. How to eliminate the influence of non-structural factors and extract the weak signals from strong disturbances is the key and difficult point for tectonic activities studies based on the thermal infrared remote sensing techniques. Land surface temperature (LST) background field is the basis for thermal infrared anomalies extraction. However, the established background fields in previous researches cannot eliminate the influence of climate changes, so the accuracy of thermal anomaly extraction is limited. Now an improved method is proposed. Combined with the periodic character of LST time series, harmonic analysis is lead into the process of LST background field establishment. Specifically, the yearly trend of LST is fitted based on Fourier Approximation method. As a new background field, the yearly trend is dynamic, includes the local and the yearly information. Then, based on the rule of “kσ”, the earthquake anomalies, calculated by RST with the yearly trend of LST, can be extracted. At last, the effectiveness of the algorithm can be tested by the quantitative analysis of anomalies with anomaly area statistics, anomaly intensity statistics and distance index statistics. The Wenchuan earthquake was discussed again based on the proposed algorithm with MODIS land temperature products in 2008. The results show that, there were obvious pre-earthquake thermal anomalies along the Longmen Mountains faults with a longer time; but there were no anomalies when the earthquake happened; and the post-earthquake thermal anomalies occurred with much smaller amplitudes and scopes. Compared with the results derived from the traditional RST which is based on the spatial average of LST values, the TIA extracted by the new RST, which is based on the yearly trend of LST, is more fit with the active faults, and the process of the anomalies occurring and removing can be described in more detail. Therefore, as the background field to extract earthquake anomalies, the yearly trend of LST is more reliable. © 2016, Editorial Office of Seismology and Geology. All right reserved.
AUTHOR KEYWORDS: Earthquake thermal anomalies; Fourier Approximation; LST background field; The yearly trend; Wenchuan earthquake
INDEX KEYWORDS: Atmospheric temperature; Climate change; Earthquakes; Extraction; Geophysics; Infrared radiation; Remote sensing; Risk assessment; Signal processing; Tectonics; Time series analysis; Background field; Fourier approximations; The yearly trend; Thermal anomalies; Wenchuan Earthquake; Faulting; accuracy assessment; active fault; algorithm; climate change; dynamic analysis; Fourier transform; harmonic analysis; hazard assessment; land surface; remote sensing; seismic hazard; surface temperature; temperature anomaly; trend analysis
REFERENCES: Chen, Meihua, Application of the inside-outside temperature relation analysis method in study on satellite infrared anomalies prior to earthquake, Dizhen Dizhi, 29, 4, pp. 863-872, (2007); 
A Study on the Quantitative Thermal Infrared Remote Sensing Method for Extracting Information of Current Tectonic Activity, (2006); 
Chen, Shunyun, Wavelet analysis of thermal infrared radiation of land surface and its implication in the study of current tectonic activities, Acta Geophysica Sinica, 49, 3, pp. 824-830, (2006); 
Guo, Xiao, Medium wave infrared brightness anomalies of Wenchuan 8.0 and Zhongba 6.8 earthquakes, Acta Geoscientica Sinica, 35, 3, pp. 338-344, (2014); 
Theories and Methods of Spatio Temporal Outliers Detection, (2009); 
Numerical Approximation, (1978); 
Measurement Technique, (2003); 
Acta Seismologica Sinica, (1997); 
Chinese Science Bulletin, (1990); 
Acta Geoscientica Sinica, (2009)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, X., Wang, L., Liu, S.
AUTHOR FULL NAMES: Li, Xiaolu (55364203100); Wang, Lei (57070565000); Liu, Shan (22135189100)
55364203100; 57070565000; 22135189100
Geographical Analysis of Community Resilience to Seismic Hazard in Southwest China
(2016) International Journal of Disaster Risk Science, 7 (3), pp. 257 - 276, Cited 22 times.
DOI: 10.1007/s13753-016-0091-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989283945&doi=10.1007%2Fs13753-016-0091-8&partnerID=40&md5=aa02dc40bb964f1a516356b4c5d7598f

AFFILIATIONS: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, China; Department of Geography & Anthropology, Louisiana State University, Baton Rouge, LA, United States
ABSTRACT: This article presents an explorative analysis of community resilience to seismic hazard in the 2008 Wenchuan Earthquake area of Southwest China. We used a regression model to analyze the impact of 13 key socioeconomic and demographic variables on community resilience in 105 counties, based on data derived from population census and provincial statistical yearbooks of China. In this research, we argue that community resilience should be measured by the change of population growth rate (Δdp) instead of population growth rate (dp) when using socioeconomic data from a fast-growing country such as China. Using Δdp as the dependent variable resulted in a better regression model. To avoid the common multicollinearity problems among the independent variables, a principal component-based factor analysis was used to consolidate the socioeconomic variables into four comprehensive factors. The geographically weighted regression coefficient maps revealed the spatial pattern of the association of the variables with resilience. We also used the K-means cluster method to segment the study area into four subregions that exhibit localized characteristics defined by the regression coefficients. In this way, we could infer location-sensitive disaster management policies that help to enhance social resilience to seismic hazards. © 2016, The Author(s).
AUTHOR KEYWORDS: China; Community resilience; Geographic information system; Geographically weighted regression; Wenchuan Earthquake
INDEX KEYWORDS: community response; disaster management; GIS; hazard assessment; population growth; regression analysis; seismic hazard; Sichuan earthquake 2008; socioeconomic impact; China
REFERENCES: Adger, W. Neil, Social-ecological resilience to coastal disasters, Science, 309, 5737, pp. 1036-1039, (2005); 
Akaike, Hirotsugu, A New Look at the Statistical Model Identification, IEEE Transactions on Automatic Control, 19, 6, pp. 716-723, (1974); 
Bevington, John S., Measuring, monitoring and evaluating post-disaster recovery: A key element in understanding community resilience, pp. 2033-2043, (2011); 
Health and Canadian Society, (1996); 
Bruneau, Michel, A Framework to Quantitatively Assess and Enhance the Seismic Resilience of Communities, Earthquake Spectra, 19, 4, pp. 733-752, (2003); 
Brunsdont, Chris, Geographically weighted regression - Modelling spatial non-stationarity, Journal of the Royal Statistical Society Series D: The Statistician, 47, 3, pp. 431-443, (1998); 
Chang, Stephanie E., Urban disaster recovery: A measurement framework and its application to the 1995 Kobe earthquake, Disasters, 34, 2, pp. 303-327, (2010); 
Introduction to Multivariate Analysis, (1980); 
Approaching Human Geography an Introduction to Contemporary Theoretical Debates, (1991); 
Congdon, Peter D., Modelling spatially varying impacts of socioeconomic predictors on mortality outcomes, Journal of Geographical Systems, 5, 2, pp. 161-184, (2003)
PUBLISHER: Beijing Normal University Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Yao, X., Li, L.
AUTHOR FULL NAMES: Yao, Xin (55723721600); Li, Lingjing (56185989500)
55723721600; 56185989500
Spatial-temporal assessment of debris flow risk in the MS8.0 Wenchuan earthquake-disturbed area
(2016) Journal of Disaster Research, 11 (4), pp. 720 - 731, Cited 5 times.
DOI: 10.20965/jdr.2016.p0720
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981275177&doi=10.20965%2Fjdr.2016.p0720&partnerID=40&md5=84966c8c2cb8a72e868ddaa1328887fb

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: For 5 years (2009–2013) after the 2008 Ms8.0 Wenchuan earthquake, rainfall led to the transformation of unconsolidated co-seismic deposits into extensive and severe debris flows, causing significant loss of life and property. For debris flows in the earthquakedisturbed area, a few common concerns exist. What is their spatial-temporal distribution? What are the controlling factors? How much is the rainfall threshold for debris flows? What areas are more susceptible? Where suffered the most severe losses of life and property? Using debris flow characteristics, this study analyzes the relationships between seismic geological factors, geomorphologic factors, extreme rainfall, and debris flows in the 5 years following the earthquake, and draws the following conclusions. (1) There are regional differences in the rainfall threshold for generation of debris flows, and the annual maximum 72- hour accumulated rainfall for triggering a debris flow decreases from pre-seismic periods (135–325 mm) to post-seismic periods (75–160 mm) by 44.4–50.8% in study area. (2) Areas with high debris flow susceptibility and hazard are primarily controlled by seismic geological conditions. (3) The long-term risk of debris flows will fall to moderate, and the affected area will shrink to that around the seismogenic fault. The results of this study will help with meteorological early warning systems, deployment of disaster prevention and control projects, and reconstruction site selection in the post-seismic LongmenMountain area. © 2016, Fuji Technology Press. All rights reserved.
AUTHOR KEYWORDS: Debris flow; Earthquake-disturbed area; Geohazard assessment; Rainfall threshold; Wenchuan earthquake
INDEX KEYWORDS: Debris; Disaster prevention; Geology; Geophysics; Rain; Risk assessment; Seismology; Site selection; Debris flows; Debris-flow susceptibilities; Geo hazards; Geological conditions; Prevention and controls; Rainfall thresholds; Spatial-temporal distribution; Wenchuan Earthquake; Earthquakes
REFERENCES: Satofuka, Yoshifumi, Prediction of Floods Caused by Landslide Dam Collapse, Journal of Disaster Research, 5, 3, pp. 288-295, (2010); 
Tsuchiya, Satoshi, Large Sediment Movement Caused by the Catastrophic Ohya-Kuzure Landslide, Journal of Disaster Research, 5, 3, pp. 257-263, (2010); 
Inoue, Kimio, The Catastrophic Tombi Landslide and Accompanying Landslide Dams Induced by the 1858 Hietsu Earthquake, Journal of Disaster Research, 5, 3, pp. 245-256, (2010); 
Mizuyama, Takahisa, Sediment Induced Disasters in the World and 1999-Debris Flow Disasters in Venezuela, Journal of Disaster Research, 5, 3, pp. 229-235, (2010); 
Journal of Mountain Science, (2010); 
Journal of Engineering Geology, (2011); 
Shou, Keh Jian, Spatial and temporal analysis of landslides in Central Taiwan after 1999 Chi-Chi earthquake, Engineering Geology, 123, 1-2, pp. 122-128, (2011); 
Sabo Against Earthquakes, (2000); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006)
PUBLISHER: Fuji Technology Press jaciii@fujipress.jp
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Yan, Z., Du, X., Fan, X.
AUTHOR FULL NAMES: Yan, Zhenzhen (55461573900); Du, Xiaoping (56506043800); Fan, Xiangtao (7403394160)
55461573900; 56506043800; 7403394160
Parallel numerical analysis of the failure characteristics of earthquake-induced landslides
(2016) Geosciences Journal, 20 (4), pp. 529 - 538, Cited 2 times.
DOI: 10.1007/s12303-015-0056-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945566897&doi=10.1007%2Fs12303-015-0056-8&partnerID=40&md5=7500eafdc5162cfcfec11823092054e1

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Earthquake-induced landslides are serious natural hazards that shocked us with tremendous casualties and great economic losses in many mountainous areas around the world. However, predicting and preventing the earthquake-induced landslides is very difficult due to the complicated relationship between seismic dynamics and coseismic landsliding. Comprehensive understanding of earthquake-induced landslides from the perspective of seismic dynamic mechanism remains inadequate at present. This study employs an elastoplastic spectral element method incorporating parallel computing and represents a realistic three-dimensional slope model via a semi-structured hexahedral mesh to investigate the dynamic failure characteristics of earthquake-induced landslides. Dynamic behaviours of slopes are simulated using a continuumbased approach with a Mohr-Coulomb yield criterion. Displacement fields are calculated using the shear strength reduction technique. Pseudo-static seismic loading is performed to assess the slope stability quantitatively and complex topography is taken into consideration. The Xinzhong landslide that occurred in Beichuan Country is one of destructively collapsing landslides triggered by the Wenchuan earthquake and is therefore selected as a case study for discussion. Three-dimensional visualization of the calculated results quantitatively demonstrated that the three-dimensional numerical model well reproduced the coseismic landsliding response and its essential dynamic failure pattern, which could not be purely captured by Geographic Information Systems (GIS) and Remote Sensing (RS) technologies and calculated using simply two-dimensional numerical model. The numerical results also showed that tensile and shear fractures had significant influences on the nature of the failed surface development. In addition, the presence of seismic loading in the slope could cause obvious disturbances for the slope stability. Comparative analysis indicated that the shear surface of the earthquake-induced slope was shorter and the tension crack surface was deeper than that of the normal gravity condition. Moreover, the landslide mainly occurred in the transition from the upper to lower part of the slope, indicating that the slope topography was one of the crucial factors resulting in slope failure. Although the model was constructed without the presence of a pre-existing failure surface, comparative analysis addressed that the failure surface obtained by the numerical simulation was in close agreement with that by the post-failure investigations. The results could provide insight into better understanding of the relationship between landslide and seismic dynamic mechanism. The study has practical significance for the effective prevention and mitigation of earthquake-induced landslide hazards. © 2016, The Association of Korean Geoscience Societies and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: earthquake-induced landslide; numerical simulation; parallel computing; slope stability; Wenchuan earthquake
REFERENCES: Chen, Min, Waveform modeling of the slab beneath Japan, Journal of Geophysical Research: Solid Earth, 112, 2, (2007); 
Crosta, Giovanni Battista, Numerical modelling of large landslides stability and runout, Natural Hazards and Earth System Sciences, 3, 6, pp. 523-538, (2003); 
Cui, Fangpeng, Collapsing and sliding response of slopes triggered by single and combined action with time difference of P and S seismic waves, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 32, 8, pp. 1266-1273, (2010); 
Gharti, Hom Nath, Application of an elastoplastic spectral-element method to 3D slope stability analysis, International Journal for Numerical Methods in Engineering, 91, 1, pp. 1-26, (2012); 
Gharti, Hom Nath, Simulation of multistage excavation based on a 3D spectral-element method, Computers and Structures, 100-101, pp. 54-69, (2012); 
Griffiths, D. V., Three-dimensional slope stability analysis by elasto-plastic finite elements, Geotechnique, 57, 6, pp. 537-546, (2007); 
Huang, Chiencheng, Influence of surface-normal ground acceleration on the initiation of the Jih-Feng-Erh-Shan landslide during the 1999 Chi-Chi, Taiwan, earthquake, Bulletin of the Seismological Society of America, 91, 5, pp. 953-958, (2001); 
Earthquake Induced Landslides, (2025); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Neamah Jebur, Mustafa, Detection of vertical slope movement in highly vegetated tropical area of Gunung pass landslide, Malaysia, using L-band InSAR technique, Geosciences Journal, 18, 1, pp. 61-68, (2014)
PUBLISHER: Korean Association of Geoscience Societies
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, L., Yao, X., Zhang, Y., Iqbal, J., Chen, J., Zhou, N.
AUTHOR FULL NAMES: Li, Lingjing (56185989500); Yao, Xin (55723721600); Zhang, Yongshuang (55883678200); Iqbal, Javed (58836359600); Chen, Jian (55717623400); Zhou, Nengjuan (55656519700)
56185989500; 55723721600; 55883678200; 58836359600; 55717623400; 55656519700
Surface recovery of landslides triggered by 2008 Ms8.0 Wenchuan earthquake (China): a case study in a typical mountainous watershed
(2016) Landslides, 13 (4), pp. 787 - 794, Cited 32 times.
DOI: 10.1007/s10346-015-0594-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933056080&doi=10.1007%2Fs10346-015-0594-1&partnerID=40&md5=f148c81143ab5e7333f3ca8df783ce5a

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Key Laboratory of Neotectonic Movement and Geohazard, MLR, Beijing, China; College of Engineering and Technology, School of Engineering and Technology, Beijing, China; Department of Earth Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Khyber Pakhtunkhwa, Pakistan
ABSTRACT: The Ms8.0 Wenchuan earthquake that occurred on 12 May 2008 in southwestern China and triggered numerous landslides is one of the stronger ones in the steep eastern margins of the Tibetan Plateau. The surfaces of these landslides have recovered gradually with vegetation, which provide useful information about the evolution of geologic environment as well as the long-term assessment of landslides after earthquake. The Mianyuanhe watershed shows many co-seismic landslides. The active fault passing through its center is selected as a study area aiming to analyze the annual surface recovery rate (SRR) of landslides by interpretation of remote-sensing images in five periods from 2008 to 2013. The results are here described. (1) Although a large amount of loose deposits were transformed into debris flows, the surfaces of the landslides recovered rapidly with vegetation and almost no landslides occurred at new sites after the Wenchuan earthquake. In the year 2008, the exposed surface projected area (ESPA) of the landslides showed a total area of 56.3 km2 and covered 28.9 % of the study area, which was reduced rapidly to 19.1 % in 2011 and 15.8 % in 2013. (2) The study area was divided into four geologic units, including clastic rocks, melange zone, carbonate rocks, and magmatic rocks. Smaller ESPAs and higher SRRs were found in the former two units versus the latter ones. (3) A single large landslide shows an SRR lower than a group of smaller ones having an equal total surface, while the SRRs of debris flows are lower than those of rockfalls and landslides. (4) The vegetation cover would return to the pre-earthquake level in 2020 approximately, which indicates that the impact of the Wenchuan earthquake on landslides and debris-flows activities would cease almost completely. © 2015, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Geo-hazards; Landslides; Longmenshan mountain; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: Debris; Faulting; Image reconstruction; Landslides; Recovery; Remote sensing; Rock bursts; Vegetation; Watersheds; Geo hazards; Geologic environment; Longmenshan mountain; Pre-earthquake levels; Remote sensing images; Seismic landslides; Vegetation recovery; Wenchuan Earthquake; Earthquakes; active fault; coseismic process; debris flow; earthquake magnitude; earthquake trigger; environmental assessment; geological hazard; image analysis; landslide; long-term change; mountain region; recovery plan; remote sensing; rockfall; Sichuan earthquake 2008; vegetation dynamics; watershed; China; Qinghai-Xizang Plateau
REFERENCES: Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996); 
He, Zhongtai, Width and hanging wall effect of surface rupture caused by Wenchuan earthquake, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 48, 6, pp. 886-894, (2012); 
Journal of Engineering Geology, (2011); 
Huang, Runqiu, Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China, Engineering Geology, 182, PB, pp. 111-120, (2014); 
Huete, Alfredo Ramon, A soil-adjusted vegetation index (SAVI), Remote Sensing of Environment, 25, 3, pp. 295-309, (1988); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Journal of Mountain Science, (2011); 
Journal of Engineering Geology, (2014); 
Engineering Geology, (2012)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Zhao, B.
AUTHOR FULL NAMES: Wang, Zijun (56539103400); Zhao, Boming (7403059533)
56539103400; 7403059533
Theatrical method and application of auto-rapid P and S waves recognition in earthquake early warning for high speed railway
(2016) Zhongguo Tiedao Kexue/China Railway Science, 37 (4), pp. 121 - 127, Cited 5 times.
DOI: 10.3969/j.issn.1001-4632.2016.04.19
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981287589&doi=10.3969%2Fj.issn.1001-4632.2016.04.19&partnerID=40&md5=378b520636894846172d01b9c67fcd63

AFFILIATIONS: School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: Based on the model of the earthquake early warning (EEW) for high speed railway using single station required by the seismic network along the railway line, we proposed a theoretical method of auto-rapid P and S waves recognition in EEW for high speed railway. Firstly P and S waves were separated through polarization analysis; then we applied an improved short term average/long term average characteristic function to obtain the preliminary picks; and finally a precise P and S phase arrival time was determined in terms of the Akaike information criteria (AIC) algorithm of the higher order statistics. We tested our techniques to the main-shock and aftershocks of the 2008 M<inf>s</inf> 8.0 Wenchuan earthquake, where 1548 waveforms were treated. In comparison to other methods according to the seismic phase picking rate and the deviation, the proposed theoretical method was of accuracy, speediness, effectiveness and could be applied for the real time early warning of impending earthquakes occurred with diverse focal mechanisms, complicated propagation processes and site effects, which could fulfill the requirement of the EEW for high speed railways by single station. © 2016, Editorial Department of China Railway Science. All right reserved.
AUTHOR KEYWORDS: Arrival time recognition; Earthquake early warning; High speed railway; P wave; S wave; Single station early warning
INDEX KEYWORDS: Earthquakes; Geophysics; Higher order statistics; Railroad engineering; Railroad plant and structures; Railroads; Seismic waves; Seismology; Shear waves; Speed; Transportation; Arrival time; Early warning; Earthquake early warning; High - speed railways; P waves; S-waves; Railroad transportation
REFERENCES: Nakamura, Yutaka, On an earthquake early warning system (EEW) and its applications, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 127-136, (2011); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Brown, Holly M., Development of the ElarmS methodology for earthquake early warning: Realtime application in California and offline testing in Japan, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 188-200, (2011); 
Satriano, Claudio, PRESTo, the earthquake early warning system for Southern Italy: Concepts, capabilities and future perspectives, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 137-153, (2011); 
Iannaccone, Giovanni, A prototype system for earthquake early-warning and alert management in southern Italy, Bulletin of Earthquake Engineering, 8, 5, pp. 1105-1129, (2010); 
Wu, Yih-Min Min, Experiment on an onsite early warning method for the Taiwan early warning system, Bulletin of the Seismological Society of America, 95, 1, pp. 347-353, (2005); 
Jurkevics, Andrejs, Polarization analysis of three-component array data, Bulletin of the Seismological Society of America, 78, 5, pp. 1725-1743, (1988); 
Rosenberger, Andreas, Real-time ground-motion analysis: Distinguishing P and S arrivals in a noisy environment, Bulletin of the Seismological Society of America, 100, 3, pp. 1252-1262, (2010); 
Baillard, Christian, An automatic kurtosis-based P-and S-phase picker designed for local seismic networks, Bulletin of the Seismological Society of America, 104, 1, pp. 394-409, (2014); 
Bull Seismol Soc Am, (1982)
PUBLISHER: Chinese Academy of Railway Sciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, L., Zhou, Q.-Y., Wang, J., Li, W., Zhou, L.-Q., Chen, H.-L., Su, P., Liang, P.
AUTHOR FULL NAMES: Wang, Lin (55196097000); Zhou, Qingyun (55705027300); Wang, Jun (58463200400); Li, Wenqiao Qiaou (52263948300); Zhou, Lianqing (55633091500); Chen, Hanlin (57192534595); Su, Peng (57203923178); Liang, Peng (57277803300)
55196097000; 55705027300; 58463200400; 52263948300; 55633091500; 57192534595; 57203923178; 57277803300
The research of the seismogenic structure of the Lushan earthquake based on the synthesis of the deep seismic data and the surface tectonic deformation
(2016) Dizhen Dizhi, 38 (2), pp. 458 - 476, Cited 5 times.
DOI: 10.3969/j.issn.0253-4967.2016.02.018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981188309&doi=10.3969%2Fj.issn.0253-4967.2016.02.018&partnerID=40&md5=fb0203308ee16efd27521134249e318e

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Seismological Bureau of Yunnan Province, Kunming, Yunnan, China
ABSTRACT: The seismogenic structure of the Lushan earthquake has remained in suspensed until now. Several faults or tectonics, including basal slipping zone, unknown blind thrust fault and piedmont buried fault, etc, are all considered as the possible seismogenic structure. This paper tries to make some new insights into this unsolved problem. Firstly, based on the data collected from the dynamic seismic stations located on the southern segment of the Longmenshan fault deployed by the Institute of Earthquake Science from 2008 to 2009 and the result of the aftershock relocation and the location of the known faults on the surface, we analyze and interpret the deep structures. Secondly, based on the terrace deformation across the main earthquake zone obtained from the dirrerential GPS meaturement of topography along the Qingyijiang River, combining with the geological interpretation of the high resolution remote sensing image and the regional geological data, we analyze the surface tectonic deformation. Furthermore, we combined the data of the deep structure and the surface deformation above to construct tectonic deformation model and research the seismogenic structure of the Lushan earthquake. Preliminarily, we think that the deformation model of the Lushan earthquake is different from that of the northern thrust segment ruptured in the Wenchuan earthquake due to the dip angle of the fault plane. On the southern segment, the main deformation is the compression of the footwall due to the nearly vertical fault plane of the frontal fault, and the new active thrust faults formed in the footwall. While on the northern segment, the main deformation is the thrusting of the hanging wall due to the less steep fault plane of the central fault. An active anticline formed on the hanging wall of the new active thrust fault, and the terrace surface on this anticline have deformed evidently since the Quaterary, and the latest activity of this anticline caused the Lushan earthquake, so the newly formed active thrust fault is probably the seismogenic structure of the Lushan earthquake. Huge displacement or tectonic deformation has been accumulated on the fault segment curved towards southeast from the Daxi country to the Taiping town during a long time, and the release of the strain and the tectonic movement all concentrate on this fault segment. The Lushan earthquake is just one event during the whole process of tectonic evolution, and the newly formed active thrust faults in the footwall may still cause similar earthquake in the future. © 2016, Editorial Office of Seismology and Geology. All right reserved.
AUTHOR KEYWORDS: Lushan earthquake; Receiver function; Seismogenic structure; Terrace deformation; The aftershock relocation
INDEX KEYWORDS: Deformation; Earthquakes; Geology; Geophysics; Image reconstruction; Relocation; Remote sensing; Seismology; Tectonics; Deformation modeling; Geological interpretation; High resolution remote sensing images; Receiver functions; Seismogenic structures; Surface deformation; Tectonic deformations; Wenchuan Earthquake; Faulting; aftershock; anticline; deformation mechanism; fault displacement; GPS; Lushan earthquake 2013; seismic data; seismic zone; seismogram; tectonic structure; thrust fault; China; Longmenshan Fault Zone; Sichuan; Wenchuan
REFERENCES: Chen, Jiu Hui, Seismotectonic study by relocation of the Wenchuan Ms8.0 earthquake sequence, Acta Geophysica Sinica, 52, 2, pp. 390-397, (2009); 
Chinese Science Bulletin, (2013); 
Scientia Sinica Terrae, (2013); 
Chen, Yuntai, A brief talk on the 20 April 2013 Lushan MW6.7 earthquake, Acta Seismologica Sinica, 35, 3, pp. 285-295, (2013); 
Dong, Shaopeng, A preliminary research on the latest tectonic deformation style and the activity age of the Dayi fault in the piedmont of the longmen mountains, Dizhen Dizhi, 30, 4, pp. 996-1003, (2008); 
Du, Fang, The M7.0 Lushan earthquake and the relationship with the M8.0 Wenchuan earthquake in Sichuan, China, Acta Geophysica Sinica, 56, 5, pp. 1772-1783, (2013); 
Chinese Science Bulletin, (2013); 
Science China Earth Sciences, (2013); 
Geological Journal of China Universities, (2003); 
Li, Chuanyou, Seismogenic structures associated with the 20 April 2013 MS 7.0 Lushan earthquake, Sichuan province, Dizhen Dizhi, 35, 3, pp. 671-683, (2013)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Song, W., Zhang, R., Yao, Y., Liu, Y., Hu, Y.
AUTHOR FULL NAMES: Song, Weiwei (55290378200); Zhang, Rui (57188842998); Yao, Yibin (8652366200); Liu, Yanyan (55972757700); Hu, Yuming (57189589815)
55290378200; 57188842998; 8652366200; 55972757700; 57189589815
PPP Sliding Window Algorithm and Its Application in Deformation Monitoring
(2016) Scientific Reports, 6, art. no. 26497, Cited 7 times.
DOI: 10.1038/srep26497
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973322924&doi=10.1038%2Fsrep26497&partnerID=40&md5=596335d19d4febfdaa6d9279a70f70b6

AFFILIATIONS: College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong, China; GNSS Research Center, Wuhan University, Wuhan, Hubei, China; School of Geodesy and Geomatics, Wuhan University, Wuhan, Hubei, China; College of Civil Engineering, Shenzhen University, Shenzhen, Guangdong, China; Guangdong Province Key Laboratory for Land Use and Consolidation, Guangzhou, China; Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, Guangzhou, Guangdong, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: Compared with the double-difference relative positioning method, the precise point positioning (PPP) algorithm can avoid the selection of a static reference station and directly measure the three-dimensional position changes at the observation site and exhibit superiority in a variety of deformation monitoring applications. However, because of the influence of various observing errors, the accuracy of PPP is generally at the cm-dm level, which cannot meet the requirements needed for high precision deformation monitoring. For most of the monitoring applications, the observation stations maintain stationary, which can be provided as a priori constraint information. In this paper, a new PPP algorithm based on a sliding window was proposed to improve the positioning accuracy. Firstly, data from IGS tracking station was processed using both traditional and new PPP algorithm; the results showed that the new algorithm can effectively improve positioning accuracy, especially for the elevation direction. Then, an earthquake simulation platform was used to simulate an earthquake event; the results illustrated that the new algorithm can effectively detect the vibrations change of a reference station during an earthquake. At last, the observed Wenchuan earthquake experimental results showed that the new algorithm was feasible to monitor the real earthquakes and provide early-warning alerts.
INDEX KEYWORDS: earthquake; experimental model; monitoring; vibration
REFERENCES: Geological Hazards, (1975); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Yoshimatsu, Hiroyuki, A review of landslide hazards in Japan and assessment of their susceptibility using an analytical hierarchic process (AHP) method, Landslides, 3, 2, pp. 149-158, (2006); 
Trifunac, Mihailo D., A note on the useable dynamic range of accelerographs recording translation, Soil Dynamics and Earthquake Engineering, 21, 4, pp. 275-286, (2001); 
Wang, Rongjiang, The 2011 Mw 9.0 Tohoku earthquake: Comparison of GPS and strong-motion data, Bulletin of the Seismological Society of America, 103, 2 B, pp. 1336-1347, (2013); 
Avallone, Antonio, Very high rate (10 Hz) GPS seismology for moderate-magnitude earthquakes: The case of the Mw 6.3 L'Aquila (central Italy) event, Journal of Geophysical Research: Solid Earth, 116, 2, (2011); 
Larson, Kristine M., Using 1-Hz GPS data to measure deformations caused by the denali fault earthquake, Science, 300, 5624, pp. 1421-1424, (2003); 
Prawirodirdjo, Linette, Instantaneous global plate motion model from 12 years of continuous GPS observations, Journal of Geophysical Research: Solid Earth, 109, 8, pp. B08405-15, (2004); 
Bock, Yehuda, Real-time strong-motion broadband displacements from collocated GPS and accelerometers, Bulletin of the Seismological Society of America, 101, 6, pp. 2904-2925, (2011); 
International Symposium on GPS Gnss, (2009)
PUBLISHER: Nature Publishing Group Houndmills Basingstoke, Hampshire RG21 6XS
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN FINAL OPEN ACCESS; GREEN OPEN ACCESS

Xue, T., Zhang, J., Li, Q.
AUTHOR FULL NAMES: Xue, Tengfei (57190428287); Zhang, Jingfa (14032411600); Li, Qiang (56041974800)
57190428287; 14032411600; 56041974800
Extraction of earthquake damage buildings from multi-source remote sensing data based on correlation change detection and object-oriented classification techniques
(2016) Acta Seismologica Sinica, 38 (3), pp. 496 - 505, Cited 8 times.
DOI: 10.11939/jass.2016.03.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979934594&doi=10.11939%2Fjass.2016.03.017&partnerID=40&md5=67ed13914477ed3f7f9e0f70c652840c

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Key Laboratory of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: Object-oriented classification technology of remote sensing images, as a spatial information extraction method, plays a key role in earthquake damage information extraction. However, it has limitations in extracting buildings from optical remote sensing images due to the characteristic vulnerable to weather and other reasons. To solve this problem, this paper proposes a method for detecting building damage by optical image in combiniation with SAR correlation changes and object-oriented classification, which extracts buildings from fusion data including optical image and SAR correlation image. Not only the spatial and spectral features, but also the correlation of buildings is considered during the extraction. The M<inf>S</inf>8.0 Wenchuan earthquake caused a wide range of building's collapse and casualties. Taking Dujiangyan area near the source as an example, the method above is tested. The results show that the accuracy of building extraction is improved by using the proposed method compared with the method only from optical image. © 2016, Acta Seismologica Sinica Press. All right reserved.
AUTHOR KEYWORDS: Change detection; Earthquake damage information extraction; Image correlation; Object-oriented classification; SAR image
INDEX KEYWORDS: correlation; earthquake damage; image classification; remote sensing; Sichuan earthquake 2008; synthetic aperture radar; China; Dujiangyan; Sichuan
REFERENCES: Remote Sensing Information, (2013); 
Engineering of Surveying and Mapping, (2015); 
Gong, Lixia, Object-oriented detection of earthquake building damage, Earthquake, 33, 2, pp. 109-114, (2013); 
Bulletin of Surveying and Mapping, (2015); 
Liu, Jiahang, Acquisition of earthquake damage information based on remote sensing technology: History, current situation and trend, Journal of Natural Disasters, 13, 6, pp. 46-52, (2004); 
Liu, Mingzhong, Rapid extraction of road damages from high resolution remote sensing images, Earthquake, 33, 2, pp. 79-86, (2013); 
Liu, Yunhua, Application of SAR data to damage identification of the Wenchuan earthquake, Acta Seismologica Sinica, 32, 2, pp. 214-223, (2010); 
High Resolution Remote Sensing Image Understanding, (2011); 
Earth Science Frontiers, (2003); 
Journal of Natural Disasters, (2001)
PUBLISHER: Acta Seismologica Sinica Press dzxb79@126.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ye, C., Cui, P., Pirasteh, S., Li, J., Meng, Q., Bi, X.-J., Zhang, J.-Q.
AUTHOR FULL NAMES: Ye, Chengming (23013109600); Cui, Peng (56706923500); Pirasteh, Saied (6505946731); Li, Jonathan M. (57235557700); Meng, Qingkai (59062184900); Bi, Xiao Jia (57225782249); Zhang, Jianqiang (35212366900)
23013109600; 56706923500; 6505946731; 57235557700; 59062184900; 57225782249; 35212366900
GiT-based structural geologic feature analysis of the southern segment of Longmenshan fault zone for earthquake evidence
(2016) Journal of Mountain Science, 13 (5), pp. 906 - 916, Cited 4 times.
DOI: 10.1007/s11629-015-3796-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964955514&doi=10.1007%2Fs11629-015-3796-z&partnerID=40&md5=7a139010691d14c50da0923d5b6ed480

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chengdu University of Technology, Chengdu, China; Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada; Chengdu Earthquake Disaster Mitigation Bureau, Chengdu, China
ABSTRACT: The Longmenshan fault is a thrust fault which runs along the base of the Longmen Mountains in Sichuan province, southwestern China. The southern segment of the fault had two distinct responses to the Ms 8 Wenchuan and Ms 7 Lushan earthquakes. This study determines characteristics of the structural geology of the Longmenshan fault to evaluate how it influenced the two aforementioned earthquakes. This research was done within a Geo-information Technologies (GiT) environment based on multi-source remote sensing and crustal movement data extracted from the Global Positioning System (GPS). The spatial distribution of the southern segment of the Longmenshan fault zone was comprehensively analyzed to study both earthquakes. The study revealed that the Wenchuan and Lushan earthquakes occurred on two relatively independent faults. In addition, there was a nearly constant-velocity crustal movement zone between the two epicenters that probably had a compressive stress with slow motion. Furthermore, the central fault and a mountain back fault gradually merged from north to south. The Lushan earthquake was not an aftershock of the Wenchuan earthquake. The research showed that fault zones within 30–50 km of State Highway 318 are intensive and complex. In addition, crustal movement velocity decreased rapidly, with a strong multi-directional shear zone. Thus, activity in that zone was likely stronger than in the northern part over the medium to long term. © 2016, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Crustal movement; Earthquake; Geo-information Technologies (GiT); Longmenshan fault zone; Remote Sensing (RS)
INDEX KEYWORDS: crustal movement; earthquake event; fault zone; GIS; GPS; remote sensing; seismic hazard; spatial distribution; structural geology; China; Longmenshan Fault Zone; Sichuan
REFERENCES: Ali, Syed Ahmad, Geological applications of Landsat Enhanced Thematic Mapper (ETM) data and Geographic Information System (GIS): Mapping and structural interpretation in south-west Iran, Zagros Structural Belt, International Journal of Remote Sensing, 25, 21, pp. 4715-4727, (2004); 
Gisciences and Remote Sensing Journal, (2003); 
Chen, Jiu Hui, Seismotectonic study by relocation of the Wenchuan Ms8.0 earthquake sequence, Acta Geophysica Sinica, 52, 2, pp. 390-397, (2009); 
Chinese Journal of Geophysics, (2012); 
Journal of Mountain Science, (2008); 
Ehrlich, Daniele, Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data, International Journal of Digital Earth, 2, 4, pp. 309-326, (2009); 
Dong, Danan, Estimating regional deformation from a combination of space and terrestrial geodetic data, Journal of Geodesy, 72, 4, pp. 200-214, (1998); 
An Introduction to Applied Geostatistics, (1989); 
Farrokhnia, Alireza R., Geo-information technology for mass wasting hazard zonation : Central - West Alborz - Iran, Disaster Advances, 4, 3, pp. 24-33, (2011); 
Gan, Weijun, Present-day crustal motion within the Tibetan Plateau inferred from GPS measurements, Journal of Geophysical Research: Solid Earth, 112, 8, (2007)
PUBLISHER: Science Press shengtaixuebao@mail.rcees.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yu, M., Huang, Y., Xu, Q., Guo, P., Dai, Z.
AUTHOR FULL NAMES: Yu, Miao (59662930600); Huang, Yu (57204857931); Xu, Qiang (56506033600); Guo, Peng (59583765600); Dai, Zili (54398313300)
59662930600; 57204857931; 56506033600; 59583765600; 54398313300
Application of virtual earth in 3D terrain modeling to visual analysis of large-scale geological disasters in mountainous areas
(2016) Environmental Earth Sciences, 75 (7), art. no. 563, Cited 35 times.
DOI: 10.1007/s12665-015-5161-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961763058&doi=10.1007%2Fs12665-015-5161-5&partnerID=40&md5=402177d766d58dc647426bf0c026dc18

AFFILIATIONS: Department of Geotechnical Engineering, Tongji University, Shanghai, China; Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education, Shanghai, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Sudden large-scale geological disasters can be triggered in mountainous areas by events such as earthquakes, rainfall, volcanic eruptions, or human activity, leading to serious loss of life and property. Generating digital elevation model (DEM) for such geological disasters allows the rapid identification of affected areas, which is essential for emergency response and hazard mitigation. The main aim of this study is to propose a low-cost and efficient method based on virtual earth to generate a three-dimensional (3D) DEM. Based on the terrain model, numerical simulations can be conducted and the results integrated with virtual earth to perform 3D visualization and visual analysis. The method proposed in this study may solve some limitations existing in other more traditional methods. For example, historical topographic maps exist mostly in paper format, which is not conducive to spatial analysis, while interpretation of remote-sensing images generally requires professional knowledge at a high cost. The emergence of the virtual earth platform of Google Earth (GE) provides new possibilities for generating terrain models. Terrain information can be extracted efficiently and freely from GE using an application programming interface (API) and then used to generate DEM. In this paper, the Donghekou landslide-debris flow triggered by the 2008 Wenchuan earthquake was selected as a case study. 3D visualization of the temporal-spatial dynamic process of a natural disaster was carried out by combination of the numerical results and GE imaging. The comparison of the study case with field survey data proves the validity of the proposed method as it describes the real terrain shape and determines the slide distance accurately, although the elevation error may be large. The free and easy-to-use method proposed here can provide an intuitive basis for hazard assessment and rapid responses to geological disasters. © 2016, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: 3D terrain modeling; Google Earth; Hazard assessment; Sudden large-scale geological disaster; Virtual earth; Visual analysis
INDEX KEYWORDS: Application programming interfaces (API); Cost benefit analysis; Disasters; Earthquakes; Geology; Geophysics; Hazards; Image reconstruction; Landforms; Maps; Remote sensing; Surveying; Visualization; Volcanoes; 3D terrain model; Geological disaster; Google earths; Hazard Assessment; Virtual earths; Visual analysis; Three dimensional computer graphics; digital elevation model; field survey; geological hazard; hazard assessment; Internet; mountain region; remote sensing; Sichuan earthquake 2008; software; terrain; three-dimensional modeling; visual analysis; visualization; China; Donghekou; Sichuan; Wenchuan
REFERENCES: Ayonghe, Samuel Ndonwi, The June 27, 2001 landslide on volcanic cones in Limbe, Mount Cameroon, West Africa, Journal of African Earth Sciences, 39, 3-5, pp. 435-439, (2004); 
Bailey, John E., The role of Virtual Globes in geoscience, Computers and Geosciences, 37, 1, pp. 1-2, (2011); 
Blenkinsop, Thomas G., Visualizing structural geology: From Excel to Google Earth, Computers and Geosciences, 45, pp. 52-56, (2012); 
Bradley, Eliza S., Google Earth and Google Fusion Tables in support of time-critical collaboration: Mapping the deepwater horizon oil spill with the AVIRIS airborne spectrometer, Earth Science Informatics, 4, 4, pp. 169-179, (2011); 
Costanzo, Dario, Exporting a Google Earth™ aided earth-flow susceptibility model: A test in central Sicily, Natural Hazards, 61, 1, pp. 103-114, (2012); 
Dai, Zili, 3D numerical modeling using smoothed particle hydrodynamics of flow-like landslide propagation triggered by the 2008 Wenchuan earthquake, Engineering Geology, 180, pp. 21-33, (2014); 
Evans, Stephen G., Landslides triggered by the 1949 Khait earthquake, Tajikistan, and associated loss of life, Engineering Geology, 109, 3-4, pp. 195-212, (2009); 
Hodge, Rebecca A., Analysing laser-scanned digital terrain models of gravel bed surfaces: Linking morphology to sediment transport processes and hydraulics, Sedimentology, 56, 7, pp. 2024-2043, (2009); 
Journal of Engineering Geology, (2008); 
Huang, Yu, Run-out analysis of flow-like landslides triggered by the Ms 8.0 2008 Wenchuan earthquake using smoothed particle hydrodynamics, Landslides, 9, 2, pp. 275-283, (2012)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, H.X., Zhang, S., Peng, M., Zhang, L.M.
AUTHOR FULL NAMES: Chen, Hongxin (55089538300); Zhang, Shuai (55092670700); Peng, Ming (37108434300); Zhang, Limin Min (58883008100)
55089538300; 55092670700; 37108434300; 58883008100
A physically-based multi-hazard risk assessment platform for regional rainfall-induced slope failures and debris flows
(2016) Engineering Geology, 203, pp. 15 - 29, Cited 66 times.
DOI: 10.1016/j.enggeo.2015.12.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959100897&doi=10.1016%2Fj.enggeo.2015.12.009&partnerID=40&md5=d20e0014acb12abc1e014c71c4568a9a

AFFILIATIONS: Department of Civil & Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong; Department of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education, Shanghai, China
ABSTRACT: Rainfall-induced slope failures and debris flows are two major hazards in mountainous areas. A physically-based multi-hazard risk assessment platform for regional rainfall-induced slope failures and debris flows has been developed in this study. The platform enables prompt assessment of risks posed by regional rainfall-induced slope failures and debris flows across multiple catchments, which is required in landslide risk management in a large area. It considers the contribution of slope failures to debris flows and the scenario of a location impacted by multiple slope failures or debris flows or both. The contribution of slope failures to debris flows is considered by adding the increased amount of channel deposit from slope failures to the source material of debris flows. The platform is applied to a highway near the epicentre of the 2008 Wenchuan earthquake. The platform predicts the impact areas and runout distances of regional debris flows reasonably well. The risk assessment results indicate that both slope failures and debris flows pose a great danger to travellers along the road shortly after the earthquake due to the presence of a large amount of loose landslide deposits on steep terrains. The materials from the slope failures triggered during a storm substantially increase the channel deposit volume, leading to significantly increased debris flow volume and risk. A multi-hazard risk assessment approach is necessary to consider the scenario of a location impacted by multiple slope failures or debris flows or both, since assessing risks of slope failures and debris flows separately may underestimate the risk. © 2015 Elsevier B.V..
AUTHOR KEYWORDS: Debris flow; GIS; Landslide; Risk assessment; Slope stability; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Debris; Deposits; Earthquakes; Geographic information systems; Geophysics; Hazards; Landslides; Rain; Risk assessment; Risk management; Risk perception; Slope protection; 2008 wenchuan earthquakes; Debris flows; Landslide deposits; Landslide risk managements; Mountainous area; Physically based; Rainfall-induced slope failures; Wenchuan Earthquake; Slope stability; debris flow; GIS; hazard assessment; landslide; rainfall; risk assessment; Sichuan earthquake 2008; slope failure; slope stability
REFERENCES: Landslide Processes from Geomorphological Mapping to Dynamic Modelling, (2009); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Ali, Abid, Simplified quantitative risk assessment of rainfall-induced landslides modelled by infinite slopes, Engineering Geology, 179, pp. 102-116, (2014); 
Arnone, Elisa, Physically-based and distributed approach to analyze rainfall-triggered landslides at watershed scale, Geomorphology, 133, 3-4, pp. 121-131, (2011); 
Landslide risk management concepts and guidelines, Australian Geomechanics Journal, 35, 1, pp. 49-92, (2000); 
Baum, Rex L., Early warning of rainfall-induced shallow landslides and debris flows in the USA, Landslides, 7, 3, pp. 259-272, (2010); 
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Bhandary, Netra P., Areal distribution of large-scale landslides along highway corridors in central Nepal, Georisk, 7, 1, pp. 1-20, (2013); 
Cannon, Susan H., Storm rainfall conditions for floods and debris flows from recently burned areas in southwestern Colorado and southern California, Geomorphology, 96, 3-4, pp. 250-269, (2008); 
Proceedings of the 14th Southeast Asian Geotechnical Conference, (2003)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zou, Q., Cui, P., Zeng, C., Tang, J., Deep Regmi, A.
AUTHOR FULL NAMES: Zou, Qiang (57203216238); Cui, Peng (56706923500); Zeng, Chao (56497480400); Tang, Jianxi (57188835006); Deep Regmi, Amar (57188834662)
57203216238; 56706923500; 56497480400; 57188835006; 57188834662
Dynamic process-based risk assessment of debris flow on a local scale
(2016) Physical Geography, 37 (2), pp. 132 - 152, Cited 20 times.
DOI: 10.1080/02723646.2016.1169477
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963723966&doi=10.1080%2F02723646.2016.1169477&partnerID=40&md5=1292790c51156bd04aa7ad9ad021722f

AFFILIATIONS: College of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang, Sichuan, China; Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: After the Wenchuan earthquake in China, debris flows have been more frequent. Multiple debris flows commonly occur in earthquake-affected areas during heavy rainfall, often causing losses of lives and property. We analyzed the dynamic movement of debris flows and proposed a quantitative method of debris flow hazard assessment, based on kinetic energy. Validated using field study of an actual debris flow disaster, these analyzes help determine the type, quantity, distribution, economic worth, and susceptibility of elements at risk. We established a method to determine vulnerability of elements at risk and we propose a systematic and quantitative method for local risk analysis of debris flows. We applied the proposed method to a debris flow in Qipan gully, which caused serious damages for Duwen Highway and Qipan settlements of Sichuan Province in 2013. With the support of a debris-flow movement numerical simulation, remote sensing, and GIS techniques, the proposed method analyzed disaster effects and divided the hazardous areas into three risk zones. Calculated risk zones coincided with the actual distribution and severity of damage of the event, suggesting that the risk assessment generated by the proposed method is consistent with results from the actual disaster. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
AUTHOR KEYWORDS: Debris flow; hazard analysis; risk assessment; vulnerability; Wenchuan earthquake
INDEX KEYWORDS: debris flow; gully erosion; hazard assessment; rainfall; risk assessment; Sichuan earthquake 2008; vulnerability; China; Sichuan
REFERENCES: Archetti, Renata, Assessment of risk due to debris flow events, Natural Hazards Review, 4, 3, pp. 115-125, (2003); 
Bisson, Marina, A rapid method to assess fire-related debris flow hazard in the Mediterranean region: An example from Sicily (southern Italy), International Journal of Applied Earth Observation and Geoinformation, 7, 3, pp. 217-231, (2005); 
Naturrisiken Und Sozialkatastrophen, (2025); 
Calvo, Benedetto, A real-world application of Monte Carlo procedure for debris flow risk assessment, Computers and Geosciences, 35, 5, pp. 967-977, (2009); 
Chau, Kam Tim, Hazard assessment of debris flows for Leung King Estate of Hong Kong by incorporating GIS with numerical simulations, Natural Hazards and Earth System Sciences, 4, 1, pp. 103-116, (2004); 
Science in China Series E Technological Sciences, (2003); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, Prediction of debris-flow danger area by combining hydrological and inundation simulation methods, Journal of Mountain Science, 8, 1, pp. 1-9, (2011); 
Cui, Peng, Risk assessment of highways affected by debris flows in Wenchuan earthquake area, Journal of Mountain Science, 10, 2, pp. 173-189, (2013); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010)
PUBLISHER: Taylor and Francis Inc. 325 Chestnut St, Suite 800 Philadelphia PA 19106
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, D., Zhang, S., Yang, H., Zhao, L.Q., Jiang, Y.H., Tang, D., Leng, X.P.
AUTHOR FULL NAMES: Liu, Dunlong (56298155700); Zhang, Shaojie (35249906100); Yang, Hongjuan (55545920200); Zhao, Luqiang (57131658500); Jiang, Yuhong (7404832288); Tang, Dan (35191134600); Leng, Xiaopeng (36986910300)
56298155700; 35249906100; 55545920200; 57131658500; 7404832288; 35191134600; 36986910300
Application and analysis of debris-flow early warning system in Wenchuan earthquake-affected area
(2016) Natural Hazards and Earth System Sciences, 16 (2), pp. 483 - 496, Cited 16 times.
DOI: 10.5194/nhess-16-483-2016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958972228&doi=10.5194%2Fnhess-16-483-2016&partnerID=40&md5=a95ca672ac619e28ac452d9e2b3bd894

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; College of Software Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, China; China Meteorological Administration, Beijing, China
ABSTRACT: The activities of debris flow (DF) in the Wenchuan earthquake-affected area significantly increased after the earthquake on 12 May 2008. The safety of the lives and property of local people is threatened by DFs. A physics-based early warning system (EWS) for DF forecasting was developed and applied in this earthquake area. This paper introduces an application of the system in the Wenchuan earthquake-affected area and analyzes the prediction results via a comparison to the DF events triggered by the strong rainfall events reported by the local government. The prediction accuracy and efficiency was first compared with a contribution-factor-based system currently used by the weather bureau of Sichuan province. The storm on 17 August 2012 was used as a case study for this comparison. The comparison shows that the false negative rate and false positive rate of the new system is, respectively, 19 and 21% lower than the system based on the contribution factors. Consequently, the prediction accuracy is obviously higher than the system based on the contribution factors with a higher operational efficiency. On the invitation of the weather bureau of Sichuan province, the authors upgraded their prediction system of DF by using this new system before the monsoon of Wenchuan earthquake-affected area in 2013. Two prediction cases on 9 July 2013 and 10 July 2014 were chosen to further demonstrate that the new EWS has high stability, efficiency, and prediction accuracy. © 2016 Author(s).
INDEX KEYWORDS: accuracy assessment; debris flow; early warning system; efficiency measurement; hazard management; seismic zone; China; Sichuan
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Badoux, Alexandre, Rainfall intensity-duration thresholds for bedload transport initiation in small Alpine watersheds, Natural Hazards and Earth System Sciences, 12, 10, pp. 3091-3108, (2012); 
Berenguer, Marc, Debris-flow forecasting at regional scale by combining susceptibility mapping and radar rainfall, Natural Hazards and Earth System Sciences, 15, 3, pp. 587-602, (2015); 
Berti, Matteo, Experimental evidences and numerical modelling of debris flow initiated by channel runoff, Landslides, 2, 3, pp. 171-182, (2005); 
Borga, Marco, Hydrogeomorphic response to extreme rainfall in headwater systems: Flash floods and debris flows, Journal of Hydrology, 518, PB, pp. 194-205, (2014); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Chen, H., Geohazards of slope mass movement and its prevention in Hong Kong, Engineering Geology, 76, 1-2, pp. 3-25, (2004); 
Coe, Jeffrey A., Initiation conditions for debris flows generated by runoff at Chalk Cliffs, central Colorado, Geomorphology, 96, 3-4, pp. 270-297, (2008); 
Cong, Zhentao, Hydrological trend analysis in the Yellow River basin using a distributed hydrological model, Water Resources Research, 45, 7, (2009); 
Chinese Science Bulletin, (1991)
PUBLISHER: Copernicus GmbH info@copernicus.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Guo, C., Yao, L., Duan, S., Huang, Y.
AUTHOR FULL NAMES: Guo, Chenwen (55755754300); Yao, Lingkan (7201688064); Duan, Shusu (55753760000); Huang, Yidan (36618861800)
55755754300; 7201688064; 55753760000; 36618861800
Distribution regularities of landslides induced by Wenchuan earthquake, Lushan earthquake and Nepal earthquake
(2016) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 51 (1), pp. 71 - 77, Cited 8 times.
DOI: 10.3969/j.issn.0258-2724.2016.01.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961842876&doi=10.3969%2Fj.issn.0258-2724.2016.01.011&partnerID=40&md5=3dfe3adff94f367677407a350f96b3c8

AFFILIATIONS: School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; Sichuan Key Laboratory of Seismic Engineering and Technology, Chengdu, Sichuan, China; MOE Key Laboratory of High-Speed Railway Engineering, Chengdu, Sichuan, China
ABSTRACT: In order to study the distribution laws of landslides induced by earthquakes, the distribution regularities of landslides were investigated statistically based on the data of 22 302 landslides induced by the Wenchuan earthquake, 1 608 landslides induced by the Lushan earthquake, and 919 landslides induced by the Nepal earthquake using GIS techniques, and the relationships of the landslides with distance from coseismic fault, lithology, slope position and slope shape were discussed. The research results show that the landslides induced by the three earthquakes were more serious in hard rock zones than in soft rock zones and in complex slope shape zones than in simple slope shape zones. Moreover, the distributions of these landslides shown a “hanging wall and footwall effect”. The distributions of the landslides shown a “fault effect” in ordinary circumstances, otherwise, the“fault effect” did not exist in intensity anomaly. The landslides had a characteristic, i. e., they were more serious in high slope position only when seismic intensity was not less than intensity IX. © 2016, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.
AUTHOR KEYWORDS: Distribution law; Landslide; Lushan earthquake; Nepal earthquake; Wenchuan earthquake
INDEX KEYWORDS: Faulting; Geophysics; Landslides; Lithology; Complex slopes; Distribution law; Distribution regularities; Fault effect; Research results; Seismic intensity; Slope positions; Wenchuan Earthquake; Earthquakes
REFERENCES: Scientia Sinica Terrae, (2013); 
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Journal of Engineering Geology, (2009); 
Wen, Ruizhi, Maximum acceleration recording from Lushan earthquake on April 20, 2013, Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 48, 5, pp. 783-791, (2013); 
Zhou, Depei, Stability analysis of rocky slope based on slope structures, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 4, pp. 687-695, (2008); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Topographic Position and Landforms Analysis, (2006); 
Journal of Engineering Geology, (2006)
PUBLISHER: Science Press shengtaixuebao@mail.rcees.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, M., Yin, Y., McSaveney, M.
AUTHOR FULL NAMES: Zhang, Ming (57184521900); Yin, Yueping (55687306100); McSaveney, Maurice J. (35615825700)
57184521900; 55687306100; 35615825700
Dynamics of the 2008 earthquake-triggered Wenjiagou Creek rock avalanche, Qingping, Sichuan, China
(2016) Engineering Geology, 200, pp. 75 - 87, Cited 86 times.
DOI: 10.1016/j.enggeo.2015.12.008
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949746677&doi=10.1016%2Fj.enggeo.2015.12.008&partnerID=40&md5=4e65248c7b99207764d32d5f61aa7b97

AFFILIATIONS: Faculty of Engineering, China University of Geosciences, Wuhan, Hubei, China; China Institute of Geo-Environment Monitoring, Beijing, Beijing, China; GNS Science, Lower Hutt, WGN, New Zealand
ABSTRACT: The Wenjiagou Creek rock avalanche was triggered by the 2008 Wenchuan earthquake. It traveled 4.6km and left a granular deposit of 1.5×108m3 in Wenjiagou Creek valley. The dynamics of the rock avalanche were studied through field and laboratory investigations and remote sensing. The dynamic course was divided into three segments: (1) Failing - the original slope failed due to the huge earthquake ground accelerations acting on a rock mass weakened by severe karstification; (2) Falling - the rock mass experienced several drops due to abrupt changes in slope, and broke into granular debris during collisions with the ground and mountain flanks; and (3) Flow - the broken granular mass flowed approximately 3km down the valley of Wenjiagou Creek. The transport mechanism of the granular mass of debris was studied by analyzing the structure of the deposit and through ring-shear tests. A gully incised into the deposit by rainfall runoff and debris flows enabled the internal structure of the deposit to be examined and sampled. In cross-section, the exposed deposit was finest near the base, and gradually became coarser towards the surface (inverse grading); in longitudinal section, deposits near the base and on the surface both became finer with increasing travel distance. Near the base, the granular debris experienced the maximum normal and shear stresses, and fragmented into the finest grains. Both normal and shear stresses between the grains gradually decreased from near the base to the surface. Samples were sheared in a ring-shear apparatus to simulate the shearing within the granular debris. Shear resistance between grains was found to decrease as grains became finer due to pervasive fragmentation, which is one of the possible mechanisms by which the granular debris was able to travel a long distance at a high speed. © 2015 Elsevier B.V.
AUTHOR KEYWORDS: Dynamics; Pervasive fragmentation; Ring-shear test; Transport mechanism; Wenjiagou Creek rock avalanche
INDEX KEYWORDS: Debris; Deposits; Dynamics; Earthquakes; Geophysics; Grading; Landforms; Remote sensing; Rock mechanics; Runoff; Shear stress; 2008 wenchuan earthquakes; Ground accelerations; Laboratory investigations; Normal and shear stress; Pervasive fragmentation; Ring shear tests; Rock avalanche; Transport mechanism; Rocks
REFERENCES: Proc R Soc London Ser A, (1954); 
Bertran, Pascal, The rock-avalanche of February 1995 at Claix (French Alps), Geomorphology, 54, 3-4, pp. 339-346, (2003); 
Der Bergsturz Von Elm, (1881); 
Cagnoli, Bruno, Pressures at the base of dry flows of angular rock fragments as a function of grain size and flow volume: Experimental results, Journal of Volcanology and Geothermal Research, 196, 3-4, pp. 236-244, (2010); 
Campbell, Charles S., Granular material flows - An overview, Powder Technology, 162, 3, pp. 208-229, (2006); 
Journal of Engineering Geology, (2011); 
Cox, Simon C., Rock avalanche on 14 July 2014 from Hillary Ridge, Aoraki/Mount Cook, New Zealand, Landslides, 12, 2, pp. 395-402, (2015); 
Crosta, Giovanni Battista, Fragmentation in the Val Pola rock avalanche, Italian Alps, Journal of Geophysical Research: Earth Surface, 112, 1, (2007); 
Crosta, Giovanni Battista, Numerical modelling of entrainment/deposition in rock and debris-avalanches, Engineering Geology, 109, 1-2, pp. 135-145, (2009); 
Fangpeng, Cui, A variation trend analysis of key controlling factors on slope dynamic response due to seismic action, Disaster Advances, 5, 4, pp. 51-57, (2012)
PUBLISHER: Elsevier
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Niu, X.N., Zhai, X.J., Tang, H., Wu, L.
AUTHOR FULL NAMES: Niu, Xiaonan (56704267400); Zhai, Xuejun (56704409900); Tang, Hong (36816706600); Wu, Lixin (55714061400)
56704267400; 56704409900; 36816706600; 55714061400
Multi-satellite scheduling approach for dynamic areal tasks triggered by emergent disasters
(2016) International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 2016-January, pp. 475 - 481, Cited 16 times.
DOI: 10.5194/isprsarchives-XLI-B1-475-2016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987893017&doi=10.5194%2Fisprsarchives-XLI-B1-475-2016&partnerID=40&md5=be41cb37ec19e5b2dd96ac83a3d91915

AFFILIATIONS: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
ABSTRACT: The process of satellite mission scheduling, which plays a significant role in rapid response to emergent disasters, e.g. earthquake, is used to allocate the observation resources and execution time to a series of imaging tasks by maximizing one or more objectives while satisfying certain given constraints. In practice, the information obtained of disaster situation changes dynamically, which accordingly leads to the dynamic imaging requirement of users. We propose a satellite scheduling model to address dynamic imaging tasks triggered by emergent disasters. The goal of proposed model is to meet the emergency response requirements so as to make an imaging plan to acquire rapid and effective information of affected area. In the model, the reward of the schedule is maximized. To solve the model, we firstly present a dynamic segmenting algorithm to partition area targets. Then the dynamic heuristic algorithm embedding in a greedy criterion is designed to obtain the optimal solution. To evaluate the model, we conduct experimental simulations in the scene of Wenchuan Earthquake. The results show that the simulated imaging plan can schedule satellites to observe a wider scope of target area. We conclude that our satellite scheduling model can optimize the usage of satellite resources so as to obtain images in disaster response in a more timely and efficient manner.
AUTHOR KEYWORDS: Dynamic segmenting algorithm; Emergent disasters; Greedy criterion; Heuristic algorithm; Satellite mission scheduling; Satellite scheduling model; Wenchuan Earthquake
INDEX KEYWORDS: Disasters; Earthquakes; Geophysics; Heuristic algorithms; Optimization; Remote sensing; Satellites; Scheduling; Disaster situations; Emergency response; Experimental simulations; Greedy criterion; Satellite mission scheduling; Satellite resources; Satellite scheduling; Wenchuan Earthquake; Emergency services
REFERENCES: Bai, Baocun, Multi-satellite scheduling toward spot and polygon observing requests, Yuhang Xuebao/Journal of Astronautics, 30, 2, pp. 754-759, (2009); 
Bensana, Eric, Exact and inexact methods for the daily management of an earth observation satellite, European Space Agency, (Special Publication) ESA SP, 394 PART 1, pp. 507-514, (1996); 
Bianchessi, Nicola, A heuristic for the multi-satellite, multi-orbit and multi-user management of Earth observation satellites, European Journal of Operational Research, 177, 2, pp. 750-762, (2007); 
Gabrel, Virginie, Enumeration and interactive selection of efficient paths in a multiple criteria graph for scheduling an earth observing satellite, European Journal of Operational Research, 139, 3, pp. 533-542, (2002); 
Hall, Nicholas G., Maximizing the value of a space mission, European Journal of Operational Research, 78, 2, pp. 224-241, (1994); 
Proc of the Third Ilog International Users Meeting, (1997); 
Lemaître, Michel, Selecting and scheduling observations of agile satellites, Aerospace Science and Technology, 6, 5, pp. 367-381, (2002); 
Science of Surveying and Mapping, (2008); 
Li, Jufang, A decomposition-based algorithm for imaging satellites scheduling problem, (2009); 
Lin, Weicheng, Daily imaging scheduling of an earth observation satellite, IEEE Transactions on Systems, Man, and Cybernetics Part A:Systems and Humans, 35, 2, pp. 213-223, (2005)
PUBLISHER: International Society for Photogrammetry and Remote Sensing
CONFERENCE NAME: 23rd International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress, ISPRS 2016
CONFERENCE DATE: 2016-07-12 through 2016-07-19
CONFERENCE LOCATION: Prague
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Hu, G., Chen, N., Iqbal, J.I., You, Y., Li, J.
AUTHOR FULL NAMES: Hu, Guisheng (35113314000); Chen, Ningsheng (8726157200); Iqbal, Javed Iqbal (57211431244); You, Yong (35811595800); Li, Jun (59651948200)
35113314000; 8726157200; 57211431244; 35811595800; 59651948200
Case study of the characteristics and dynamic process of July 10, 2013, catastrophic debris flows in Wenchuan county, China Características y procesos dinámicos de los catastróficos movimientos de detritos en el condado de Wenchuan, China, el 10 de julio de 2013 – Caso de estudio
(2016) Earth Sciences Research Journal, 20 (2), pp. E1 - E13, Cited 9 times.
DOI: 10.15446/esrj.v20n2.48026
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84986254019&doi=10.15446%2Fesrj.v20n2.48026&partnerID=40&md5=0f5b0320dbd4c70b661daa2e3590bd4d

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Department of Earth Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Khyber Pakhtunkhwa, Pakistan
ABSTRACT: The Wenchuan earthquake of May 12, 2008, generated a significant amount of loose solid material that can produce devastating debris flows. In the five years since the earthquake, there have been many large-scale individual and group catastrophic debris flows that have caused lots of damage to the resettled population and the reconstruction efforts. The reconstructed towns of Yingxiu, Yinxing and Miansi have suffered debris flows and other secondary disasters in the past five years and are still not out of danger in the future. A debris-flow catastrophic event hit four towns of Wenchuan County along the Duwen Highway, part of China’s National Highway 213, at midnight on July 10, 2013, following a local extreme rainfall of 176.2mm 24h-1. The debris flows occurred simultaneously along seven gullies. A total of 15000 people were affected due to the destruction of resettlement areas, factories, power stations, and houses. Because of this devastating event, traffic along the Duwen highway was completely disrupted during the disaster and recovery period. The present study focuses on the Lianshan Bridge debris flow gully; the disaster characteristics and cause of the debris flow were analyzed based on field investigations, remote sensing interpretation, and laboratory experiments. The particular dynamic parameters of the debris flow were calculated and analyzed including density, velocity, discharge, total volume and impact force. Also, the dynamic processes and changes that occurred in the debris flow were examined, and the block and burst characteristics of debris flow were studied based on statistical calculation and analysis dynamic characteristic parameters of debris flow. Finally, a program to prevent further debris flow was proposed according to the on-site investigation and based on the analysis of the features and dynamic processes of the debris flow. © 2016, Earth Sciences Research Journal. All rights reserved.
AUTHOR KEYWORDS: Debris flow; Dynamic process; Prevention and cure measures; The block and burst characteristics
INDEX KEYWORDS: catastrophic event; debris flow; disaster management; dynamic response; earthquake damage; extreme event; gully; precipitation intensity; reconstruction; road; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: Chen, Hongxin, Mechanisms and runout characteristics of the rainfall-triggered debris flow in Xiaojiagou in Sichuan Province, China, Natural Hazards, 62, 3, pp. 1037-1057, (2012); 
Chen, Hongxin, Hybrid simulation of the initiation and runout characteristics of a catastrophic debris flow, Journal of Mountain Science, 10, 2, pp. 219-232, (2013); 
Science in China Series E Technological Sciences, (2003); 
Chen, N. Sh, A great disastrous debris flow on 11 July 2003 in Shuikazi valley, Danba County, western Sichuan, China, Landslides, 2, 1, pp. 71-74, (2005); 
Chen, Ningsheng, Impact of earthquake on debris flows - A case study on the wenchuan earthquake, Journal of Earthquake and Tsunami, 5, 5, pp. 493-508, (2011); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Chen, N. Sh, A new total volume model of debris flows with intermittent surges: Based on the observations at Jiangjia Valley, southwest China, Natural Hazards, 56, 1, pp. 37-57, (2011); 
Cui, Peng, Prediction of debris-flow danger area by combining hydrological and inundation simulation methods, Journal of Mountain Science, 8, 1, pp. 1-9, (2011); 
Guzzetti, Fausto, The rainfall intensity-duration control of shallow landslides and debris flows: An update, Landslides, 5, 1, pp. 3-17, (2008); 
He, Siming, Simplified calculation of impact force of massive stone in debris flow, Journal of Natural Disasters, 18, 5, pp. 51-56, (2009)
PUBLISHER: Universidad Nacional de Colombia Career 45 No 26-85 Edifice Uriel Gutierrez
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Peng, W., Wang, G.J., Zhou, J.M., Xu, X.L., Luo, H.L., Zhao, J.F., Yang, C.J.
AUTHOR FULL NAMES: Peng, Wenfu (36163324300); Wang, Guangjie (56683231100); Zhou, Jieming (55164004300); Xu, Xinliang (55602417800); Luo, Huailiang (57188812447); Zhao, Jingfeng (56144401500); Yang, Cunjian (23494316400)
36163324300; 56683231100; 55164004300; 55602417800; 57188812447; 56144401500; 23494316400
Dynamic monitoring of fractional vegetation cover along Minjiang River from Wenchuan county to Dujiangyan city using multi-temporal landsat 5 and 8 images
(2016) Shengtai Xuebao, 36 (7), pp. 1975 - 1988, Cited 35 times.
DOI: 10.5846/stxb201409051756
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963596162&doi=10.5846%2Fstxb201409051756&partnerID=40&md5=46c74a3a3b87986d1a4d81027c7b52c5

AFFILIATIONS: Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Sichuan Normal University, Chengdu, Sichuan, China; Institute of Geography and Resources Science, Sichuan Normal University, Chengdu, Sichuan, China; Data Center for Resources and Environmental Sciences, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The terrestrial ecosystem plays an important role in maintaining the structure, function, and environment of earth systems, and therefore, human survival. Fractional vegetation cover (FVC) is an important indicator of ecological changes in the environment, and an important spatial parameter of land surface vegetation status for various ecological models. It is very important to estimate the changes and patterns of FVC within the fragile ecological system of the Minjiang River, which is located in a transition zone between the Tibetan Plateau and Sichuan basin. FVC information in the arid valley of the Minjiang River was extracted from remote sensing data, DEM, and GIS technology following the dimidiate pixel model. The differentiation characteristics of the spatial and temporal dynamic patterns of FVC, vegetation damage caused by the Wenchuan earthquake, vegetation restoration, elevation, slope, and aspect were also quantitatively studied. The results showed that: (1) the vegetation coverage was generally good during the study period; there were variations in levels of FVC, and the FVC in most areas was above medium and high levels. The overall spatial pattern showed reduced FVC on either side of the Longmen Mountains, in eastern Wenchuan County, and northwestern Dujiangyan City. The FVC change tended to increase first, then decrease with increasing elevation rendering. Above the lower levels, FVC was mainly distributed at elevations of 4331—4869 m, where the FVC decreased with increasing slope. More than 24% of the vegetation coverage was distributed in the area where the slope was less than 9°; there was little or no vegetation coverage in areas where the slope was greater than 51°. The FVC also changed according to aspect. It was mainly distributed on the eastern, western, and southern slopes. (2) The area of vegetation damage caused by the Wenchuan earthquake was 63808. 7 hm2. Severe damage to vegetation occurred mainly within the range of 567—4331 m elevation, on slopes of 26—51°, with eastern, northern, southern, or western aspects. (3) After five years of natural regeneration, 17786.47 hm2 of the destroyed areas were recovered. The recovered vegetation area occurred mainly across elevation ranges of 567—2180 m and 3256— 3793 m, on slopes of<9° or 26—51°, and eastern, southeastern, and southern aspects. (4) The results also showed that elevation and slope had significantly larger effects than aspect on vegetation damage or restoration. Although there was a certain correlation between the vegetation damage and restoration, the change patterns were complicated. The results provided very useful information for decision-making and policy-planning in the region of the Minjiang River, from Wenchuan County to Dujiangyan City, after the Wenchuan earthquake. Although the natural vegetation recovery is a slow process, some of the areas with earthquake-induced damage can be restored to their original condition through natural succession. Human intervention may not be a good way to address natural vegetation recovery in this area. Thus, vegetation restoration mainly involves closing the areas to promote natural vegetation restoration, or adopting artificial forestation to restore vegetation in a small area. © 2016, Ecological Society of China. All rights reserved.
AUTHOR KEYWORDS: Dimidiate pixel model; Fractional vegetation cover (FVC); Minjiang River; Spatial -temporal pattern
INDEX KEYWORDS: decision making; digital elevation model; GIS; Landsat; pixel; remote sensing; satellite imagery; slope; spatiotemporal analysis; vegetation cover; China; Dujiangyan; Longmen Mountains; Min River [Sichuan]; Qinghai-Xizang Plateau; Sichuan; Wenchuan
REFERENCES: Global Change and the Earth System A Planet Under Pressure, (2004); 
Heimann, Martin, Terrestrial ecosystem carbon dynamics and climate feedbacks, Nature, 451, 7176, pp. 289-292, (2008); 
Gitelson, Anatoly A., Novel algorithms for remote estimation of vegetation fraction, Remote Sensing of Environment, 80, 1, pp. 76-87, (2002); 
Kobayashi, Hideki, Atmospheric conditions for monitoring the long-term vegetation dynamics in the Amazon using normalized difference vegetation index, Remote Sensing of Environment, 97, 4, pp. 519-525, (2005); 
Zhang, Fei, Vegetation fractional coverage change in a typical oasis region in Tarim River Watershed based on remote sensing, Journal of Arid Land, 5, 1, pp. 89-101, (2013); 
Lu, Tao, Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: A case study in Mao County, Ecological Research, 27, 5, pp. 955-966, (2012); 
Advanced Remote Sensing Terrestrial Information Extraction and Applications, (2020); 
Rangeland Reflectance Characteristics Measured by Aircraft and Spacecraft Sensors, (1978); 
Gutman, George G., The derivation of the green vegetation fraction from NOAA/AVHRR data for use in numerical weather prediction models, International Journal of Remote Sensing, 19, 8, pp. 1533-1543, (1998); 
Zribi, Mehrez, Derivation of wild vegetation cover density in semi-arid regions: ERS2/SAR evaluation, International Journal of Remote Sensing, 24, 6, pp. 1335-1352, (2003)
PUBLISHER: Ecological Society of China
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, M., Xie, M.-W., Wang, L.-W.
AUTHOR FULL NAMES: Hu, Man (55982016200); Xie, Mowen (7202255467); Wang, Liwei (36704169800)
55982016200; 7202255467; 36704169800
SPH simulations of post-failure flow of landslides using elastic-plastic soil constitutive model
(2016) Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 38 (1), pp. 58 - 67, Cited 16 times.
DOI: 10.11779/CJGE201601005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962585036&doi=10.11779%2FCJGE201601005&partnerID=40&md5=000554fde87dc79bb1323e72051663d7

AFFILIATIONS: College of Engineering and Technology, Southwest University, Chongqing, China; School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, China; School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, Hebei, China
ABSTRACT: Modeling of post-failure flow of landslides is one of the important approaches that can be used to simulate landslide flow development and predict the landslide hazard zone. A Smoothed particle hydrodynamics (SPH) model based on the constitution of elastic-plastic constitutive mechanics for soil is developed for simulating the behavior of a class of geo-materials. The SPH soil model considers the plastic behavior of the materials, and hence it is very important for more accurate and realistic simulations of geo-materials of soil type. The implemented material laws in the SPH soil code include classical elastic-plasticity with a linear elastic part, and different applicable yield surfaces with non-associated flow rules. In order to apply the SPH method to actual landslide modeling, the geographic information system (GIS) is utilized to generate site-specific models. Thus a C# code is developed to generate the particles of a given landslide site, which produces realistic particle mass and actual complicated boundaries for the SPH soil model. With GIS enabled, complex topography and irregular boundary can be accurately and easily generated. To improve the accuracy of such a complicated landslide simulation, a modified approach is proposed to implement the complex topography representation of landslide mass and the effective treatments of the irregular and complicated boundaries generated from the GIS. The SPH soil code is applied to the well-known Daguangbao landslide triggered by Wenchuan Earthquake in 2008. The topographies after failure are compared with those obtained from field collected data, and good agreement is found. © 2016, Chinese Society of Civil Engineering. All right reserved.
AUTHOR KEYWORDS: Elastic-plastic constitutive soil; Geographic information system; Landslide; Simulation; Smoothed particle hydrodynamics
INDEX KEYWORDS: Codes (symbols); Earthquakes; Elastoplasticity; Fluid dynamics; Geographic information systems; Information systems; Landslides; Soils; Topography; Complex topographies; Daguangbao landslides; Elastic-Plastic; Elastic-plastic soils; Non-associated flow rule; Realistic simulation; Simulation; Smoothed particle hydrodynamics; Hydrodynamics
REFERENCES: Duncan, James Michael, State of the art: Limit equilibrium and finite-element analysis of slopes, Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 122, 7, pp. 577-596, (1996); 
Hammouri, Nezar Atalla, Stability analysis of slopes using the finite element method and limiting equilibrium approach, Bulletin of Engineering Geology and the Environment, 67, 4, pp. 471-478, (2008); 
Scavia, Claudio, A method for the study of crack propagation in rock structures, Geotechnique, 45, 3, pp. 447-463, (1995); 
Eberhardt, Erick, Numerical analysis of initiation and progressive failure in natural rock slopes-the 1991 Randa rockslide, International Journal of Rock Mechanics and Mining Sciences, 41, 1, pp. 69-87, (2004); 
Mishra, Barada Kanta, The discrete element method for the simulation of ball mills, Applied Mathematical Modelling, 16, 11, pp. 598-604, (1992); 
Shi, Genhua, DISCONTINUOUS DEFORMATION ANALYSIS., pp. 269-277, (1984); 
Belytschko, T., Element‐free Galerkin methods, International Journal for Numerical Methods in Engineering, 37, 2, pp. 229-256, (1994); 
Cellular Automata Modeling of Physical Systems, (1998); 
Smoothed Particle Hydrodynamics A Meshfree Particle Method, (2003); 
McDougall, Scott D., A model for the analysis of rapid landslide motion across three-dimensional terrain, Canadian Geotechnical Journal, 41, 6, pp. 1084-1097, (2004)
PUBLISHER: Chinese Society of Civil Engineering
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zeng, H., Lu, T., Jenkins, H., Negrón-Juárez, R.I., Xu, J.
AUTHOR FULL NAMES: Zeng, Hongcheng (59777259500); Lu, Tao (56406648100); Jenkins, Hillary S. (57188729195); Negrón-Juárez, Robinson Isaac (16245558300); Xu, Jiceng (55823365700)
59777259500; 56406648100; 57188729195; 16245558300; 55823365700
Assessing earthquake-induced tree mortality in temperate forest ecosystems: A case study from wenchuan, china
(2016) Remote Sensing, 8 (3), art. no. 252, Cited 6 times.
DOI: 10.3390/rs8030252
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962559317&doi=10.3390%2Frs8030252&partnerID=40&md5=fe246926a464d153e54469e975074409

AFFILIATIONS: Chengdu Institute of Biology Chinese Academy of Sciences, Chengdu, Sichuan, China; Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chinese Academy of Sciences, Beijing, Beijing, China; Faculty of Forestry, University of Toronto, Toronto, ON, Canada; Department of Environmental Studies, University of Redlands, Redlands, CA, United States; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
ABSTRACT: Earthquakes can produce significant tree mortality, and consequently affect regional carbon dynamics. Unfortunately, detailed studies quantifying the influence of earthquake on forest mortality are currently rare. The committed forest biomass carbon loss associated with the 2008 Wenchuan earthquake in China is assessed by a synthetic approach in this study that integrated field investigation, remote sensing analysis, empirical models and Monte Carlo simulation. The newly developed approach significantly improved the forest disturbance evaluation by quantitatively defining the earthquake impact boundary and detailed field survey to validate the mortality models. Based on our approach, a total biomass carbon of 10.9 Tg·C was lost in Wenchuan earthquake, which offset 0.23% of the living biomass carbon stock in Chinese forests. Tree mortality was highly clustered at epicenter, and declined rapidly with distance away from the fault zone. It is suggested that earthquakes represent a significant driver to forest carbon dynamics, and the earthquake-induced biomass carbon loss should be included in estimating forest carbon budgets. © 2016 by the authors.
AUTHOR KEYWORDS: Biomass carbon loss; Earthquake; Forest mortality; Remote sensing; Synthetic approach
INDEX KEYWORDS: Biomass; Budget control; Earthquakes; Ecosystems; Geophysics; Intelligent systems; Monte Carlo methods; Remote sensing; 2008 wenchuan earthquakes; Carbon loss; Forest carbon budgets; Forest mortality; Remote sensing analysis; Synthetic approach; Temperate forest ecosystems; Wenchuan Earthquake; Forestry
REFERENCES: Garwood, Nancy C., Earthquake-caused landslides: A major disturbance to tropical forests, Science, 205, 4410, pp. 997-999, (1979); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Allen, Robert B., Immediate damage by an earthquake to a temperate montane forest, Ecology, 80, 2, pp. 708-714, (1999); 
Chambers, Jeffrey Quintin, Hurricane Katrina's carbon footprint on U.S. Gulf Coast forests, Science, 318, 5853, (2007); 
Saleska, Scott Reid, Amazon forests green-up during 2005 drought, Science, 318, 5850, (2007); 
Kurz, Werner A., Mountain pine beetle and forest carbon feedback to climate change, Nature, 452, 7190, pp. 987-990, (2008); 
Parsons, Tom, The 2010-2014.3 global earthquake rate increase, Geophysical Research Letters, 41, 13, pp. 4479-4485, (2014); 
Earthquakes What are the Long Term Trends, (2015); 
Kor̈ner, Christian, Slow in, rapid out - Carbon flux studies and kyoto targets, Science, 300, 5623, pp. 1242-1243, (2003); 
Vittoz, Pascal, Earthquake impacts in old-growth Nothofagus forests in New Zealand, Journal of Vegetation Science, 12, 3, pp. 417-426, (2001)
PUBLISHER: MDPI AG Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Görüm, T., Carranza, E.J.M.
AUTHOR FULL NAMES: Görüm, Tolga (10440667500); Carranza, Emmanuel John M. (9735536400)
10440667500; 9735536400
Control of style-of-faulting on spatial pattern of earthquake-triggered landslides
(2015) International Journal of Environmental Science and Technology, 12 (10), pp. 3189 - 3212, Cited 39 times.
DOI: 10.1007/s13762-015-0752-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939422176&doi=10.1007%2Fs13762-015-0752-y&partnerID=40&md5=504b459be891335b7ec39a166a23a92e

AFFILIATIONS: Universiteit Twente, Enschede, Overijssel, Netherlands; Yıldız Teknik Üniversitesi, Istanbul, Turkey; James Cook University, Townsville, QLD, Australia
ABSTRACT: Predictive mapping of susceptibility to earthquake-triggered landslides (ETLs) commonly uses distance to fault as spatial predictor, regardless of style-of-faulting. Here, we examined the hypothesis that the spatial pattern of ETLs is influenced by style-of-faulting based on distance distribution analysis and Fry analysis. The Yingxiu–Beichuan fault (YBF) in China and a huge number of landslides that ruptured and occurred, respectively, during the 2008 Wenchuan earthquake permitted this study because the style-of-faulting along the YBF varied from its southern to northern parts (i.e. mainly thrust-slip in the southern part, oblique-slip in the central part and mainly strike-slip in the northern part). On the YBF hanging-wall, ETLs at 4.4–4.7 and 10.3–11.5 km from the YBF are likely associated with strike- and thrust-slips, respectively. On the southern and central parts of the hanging-wall, ETLs at 7.5–8 km from the YBF are likely associated with oblique-slips. These findings indicate that the spatial pattern of ETLs is influenced by style-of-faulting. Based on knowledge about the style-of-faulting and by using evidential belief functions to create a predictor map based on proximity to faults, we obtained higher landslide prediction accuracy than by using unclassified faults. When distance from unclassified parts of the YBF is used as predictor, the prediction accuracy is 80 %; when distance from parts of the YBF, classified according to style-of-faulting, is used as predictor, the prediction accuracy is 93 %. Therefore, mapping and classification of faults and proper spatial representation of fault control on occurrence of ETLs are important in predictive mapping of susceptibility to ETLs. © 2015, Islamic Azad University (IAU).
AUTHOR KEYWORDS: 2008 Wenchuan earthquake; Distance distribution analysis; Evidential belief functions; Fry analysis; Geographic information system; Yingxiu–Beichuan fault
INDEX KEYWORDS: Earthquakes; Forecasting; Geographic information systems; Geophysics; Landslides; Mapping; Strike-slip faults; Uncertainty analysis; 2008 wenchuan earthquakes; Belief function; Distance distributions; Earthquake-triggered landslides; Fry analysis; Landslide prediction; Prediction accuracy; Spatial representations; Faulting; accuracy assessment; earthquake prediction; earthquake trigger; faulting; GIS; landslide; mapping method; Sichuan earthquake 2008; spatial analysis; strike-slip fault; thrust fault
REFERENCES: Abrahamson, Norman A.Bolt, Empirical response spectral attenuation relations for shallow crustal earthquakes, Seismological Research Letters, 68, 1, pp. 94-109, (1997); 
Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996); 
Alexander, David E., Tectonic causes of landslides, Earth Surface Processes and Landforms, 18, 4, pp. 311-338, (1993); 
Bai, Shibiao, Susceptibility assessments of the Wenchuan earthquake-triggered landslides in Longnan using logistic regression, Environmental Earth Sciences, 71, 2, pp. 731-743, (2014); 
Beavan, John, Fault slip models of the 2010-2011 Canterbury, New Zealand, earthquakes from geodetic data and observations of postseismic ground deformation, New Zealand Journal of Geology and Geophysics, 55, 3, pp. 207-221, (2012); 
Beguería, Santiago, Validation and evaluation of predictive models in hazard assessment and risk management, Natural Hazards, 37, 3, pp. 315-329, (2006); 
Journal of Applied Probability, (1977); 
Applied Statistics, (1986); 
Bommer, Julian J., Style-of-faulting in ground-motion prediction equations, Bulletin of Earthquake Engineering, 1, 2, pp. 171-203, (2003); 
Bonham-Carter, Graeme F., Statistical association of gold occurrences with landsat-derived lineaments, timmins-kirkland lake area ontario, Canadian Journal of Remote Sensing, 11, 2, pp. 195-210, (1985)
PUBLISHER: Center for Environmental and Energy Research and Studies editor@ijest.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ding, M., Miao, C.
AUTHOR FULL NAMES: Ding, Mingtao (55421086000); Miao, Cheng (56511157900)
55421086000; 56511157900
Comparative analysis of the distribution characteristics of geological hazards in the Lushan and Wenchuan earthquake-prone areas
(2015) Environmental Earth Sciences, 74 (6), pp. 5359 - 5371, Cited 9 times.
DOI: 10.1007/s12665-015-4549-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940723689&doi=10.1007%2Fs12665-015-4549-6&partnerID=40&md5=211ea3da301be71460f3f47573f77e5c

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China
ABSTRACT: In the 21st century, the 2008 Ms 8.0 Wenchuan earthquake and the 2013 Ms 7.0 Lushan earthquake occurred in Sichuan Province, southwestern China. These two powerful earthquakes caused huge property loss and numerous human casualties. The frequent occurrence of geological hazards (including landslides and debris flows) has brought great challenges to disaster prevention and reconstruction work in earthquake-prone areas. Combing the research method of field investigations with visual interpretation of high-resolution remote sensing images, this study investigates areas with a seismic intensity ≥VII. In the study, a systematic analysis is conducted to clarify the distribution characteristics of geological hazards in the Lushan and Wenchuan earthquake-prone areas based on statistics released by the Ministry of Land and Resources, Ministry of Water Resource, Ministry of Construction of China, and other related departments. Such a clarification was done through GIS technology with varied factor combinations. Hopefully, comparative analysis on the distribution characteristics of mountain disasters in Lushan and Wenchuan leads to determination of distribution similarities and differences in areas with a seismic intensity ≥VII. The study concludes, in a systematic manner, distribution characteristics under distinctive geomorphic conditions, geological structures, and other conditions in the study area; thus can serve as a reference for disaster prevention and demographic readjustment in areas with similar conditions, promoting harmonious development of humans and nature there. © 2015, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Distribution characteristics; Geological hazards; Lushan earthquake; Wenchuan earthquake
INDEX KEYWORDS: Disaster prevention; Disasters; Geology; Hazards; Image reconstruction; Remote sensing; Seismology; Water resources; Distribution characteristics; Geological hazards; Geological structures; Geomorphic conditions; Harmonious development; High resolution remote sensing images; Visual interpretation; Wenchuan Earthquake; Earthquakes; comparative study; disaster management; earthquake damage; earthquake intensity; earthquake magnitude; geological hazard; GIS; governance approach; Lushan earthquake 2013; mountain region; remote sensing; Sichuan earthquake 2008; spatial distribution; strategic approach; China; Sichuan
REFERENCES: Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Bulletin of Chinese Academy of Sciences, (2008); 
Journal of Mountain Science, (2013); 
Delgado, José, On far field occurrence of seismically induced landslides, Engineering Geology, 123, 3, pp. 204-213, (2011); 
Ding, Mingtao, IM-based hazard assessment on debris flows in the upper reaches of Min River, Disaster Advances, 6, 9, pp. 39-47, (2013); 
Ding, Mingtao, Susceptibility mapping of landslides in Beichuan County using cluster and MLC methods, Natural Hazards, 70, 1, pp. 755-766, (2014); 
Ding, Mingtao, Property insurance against debris-flow disasters based on risk assessment and the principal-agent theory, Natural Hazards, 60, 3, pp. 801-817, (2012); 
Ding, Mingtao, Coupling mechanism of rural settlements and mountain disasters in the upper reaches of Min River, Journal of Mountain Science, 11, 1, pp. 66-72, (2014); 
Du, Fang, The M7.0 Lushan earthquake and the relationship with the M8.0 Wenchuan earthquake in Sichuan, China, Acta Geophysica Sinica, 56, 5, pp. 1772-1783, (2013); 
Fan, Xuanmei, Analysis of landslide dams induced by the 2008 Wenchuan earthquake, Journal of Asian Earth Sciences, 57, pp. 25-37, (2012)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, X., Chen, H., You, Y., Liu, J.
AUTHOR FULL NAMES: Chen, Xingzhang (25623240400); Chen, Hui (55367157900); You, Yong (35811595800); Liu, Jinfeng (59454532200)
25623240400; 55367157900; 35811595800; 59454532200
Susceptibility assessment of debris flows using the analytic hierarchy process method - A case study in Subao river valley, China
(2015) Journal of Rock Mechanics and Geotechnical Engineering, 7 (4), pp. 404 - 410, Cited 45 times.
DOI: 10.1016/j.jrmge.2015.04.003
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940364454&doi=10.1016%2Fj.jrmge.2015.04.003&partnerID=40&md5=e2afd5de0573e0d48ffa80ddd1ea0138

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Many debris flows have occurred in the areas surrounding the epicenter of the Wenchuan earthquake. Susceptibility assessment of debris flows in this area is especially important for disaster prevention and mitigation. This paper studies one of the worst hit areas, the Subao river valley, and the susceptibility assessment of debris flows is performed based on field surveys and remote sensing interpretation. By investigating the formation conditions of debris flows in the valley, the following assessment factors are selected: mixture density of landslides and rock avalanches, distance to the seismogenic fault, stratum lithology, ground roughness, and hillside angle. The weights of the assessment factors are determined by the analytic hierarchy process (AHP) method. Each of the assessment factors is further divided into five grades. Then, the assessment model is built using the multifactor superposition method to assess the debris flow susceptibility. Based on the assessment results, the Subao river valley is divided into three areas: high susceptibility areas, medium susceptibility areas, and low susceptibility areas. The high susceptibility areas are concentrated in the middle of the valley, accounting for 17.6% of the valley area. The medium susceptibility areas are in the middle and lower reaches, most of which are located on both sides of the high susceptibility areas and account for 45.3% of the valley area. The remainders are classified as low susceptibility areas. The results of the model are in accordance with the actual debris flow events that occurred after the earthquake in the valley, confirming that the proposed model is capable of assessing the debris flow susceptibility. The results can also provide guidance for reconstruction planning and debris flow prevention in the Subao river valley. © 2015 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences.
AUTHOR KEYWORDS: Analytic hierarchy process (AHP) method; Debris flows; Geographic information system (GIS); Subao river valley; Susceptibility assessment; Wenchuan earthquake
INDEX KEYWORDS: analytical hierarchy process; debris flow; disaster management; earthquake epicenter; GIS; remote sensing; risk assessment; Sichuan earthquake 2008; China; Sichuan; Subao Valley
REFERENCES: Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Carrara, Alberto, Comparing models of debris-flow susceptibility in the alpine environment, Geomorphology, 94, 3-4, pp. 353-378, (2008); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Jia, Dong, Longmen Shan fold-thrust belt and its relation to the western Sichuan Basin in central China: New insights from hydrocarbon exploration, AAPG Bulletin, 90, 9, pp. 1425-1447, (2006); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Kamp, Ulrich, GIS-based landslide susceptibility mapping for the 2005 Kashmir earthquake region, Geomorphology, 101, 4, pp. 631-642, (2008); 
Kayastha, Prabin, Application of the analytical hierarchy process (AHP) for landslide susceptibility mapping: A case study from the Tinau watershed, west Nepal, Computers and Geosciences, 52, pp. 398-408, (2013); 
Komac, Marko, A landslide susceptibility model using the Analytical Hierarchy Process method and multivariate statistics in perialpine Slovenia, Geomorphology, 74, 1-4, pp. 17-28, (2006); 
J Mt Sci, (2009); 
Li, Songlin, Fault zone structures of northern and southern portions of the main central fault generated by the 2008 Wenchuan earthquake using fault zone trapped waves, Earthquake Science, 22, 4, pp. 417-424, (2009)
PUBLISHER: Chinese Academy of Sciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Li, Y., Chen, J., Zhang, X., Yuan, H.
AUTHOR FULL NAMES: Li, Yuanyuan (55571666200); Chen, Jianguo (55635123600); Zhang, Xiaole (36669778400); Yuan, Hongyong (9939437200)
55571666200; 55635123600; 36669778400; 9939437200
Structure destruction based earthquake casualty estimates
(2015) Qinghua Daxue Xuebao/Journal of Tsinghua University, 55 (7), pp. 803 - 814, Cited 8 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943656751&partnerID=40&md5=43f6989f73dfd213fb3d1bfe734db405

AFFILIATIONS: Institute of Public Safety Research, Tsinghua University, Beijing, China
ABSTRACT: Post-earthquake casualty estimates are of great importance for emergency planning and rescues. The USA earthquake software HAZUS estimates casualties based on building vulnerability, but the model is mainly developed for building structures in California. A simplified rapid casualty assessment model is developed for emergency response and verified against data from the Wenchuan earthquake for Chinese building structures. The estimated number of injuries is close to the actual number, but the estimated number of deaths is lower, because the model seriously underestimates fatalities in the epicenter area. The predicted results are consistent with the actual situation and reflect the severity of the earthquake casualties. The simplified model is suitable for rapid casualty assessments to direct post-earthquake emergency response. ©, 2015, Press of Tsinghua University. All right reserved.
AUTHOR KEYWORDS: Capacity spectrum method; Earthquake casualty; Geographic information system (GIS); HAZUS; ShakeMap
INDEX KEYWORDS: Emergency services; Geographic information systems; Building vulnerabilities; Capacity spectrum method; Earthquake emergency response; HAZUS; Number of injuries; ShakeMap; Structure destruction; Wenchuan Earthquake; Earthquakes
REFERENCES: Proc of the Int Seminar on Earthquake and Hazard Mitigation Technology, (1991); 
Nichols, John M., Development and Calibration of an Earthquake Fatality Function, Earthquake Spectra, 19, 3, pp. 605-633, (2003); 
Journal of Natural Disaster Science, (1992); 
Samardjieva, Elena I., Estimation of the expected number of casualties caused by strong earthquakes, Bulletin of the Seismological Society of America, 92, 6, pp. 2310-2322, (2002); 
Proceedings of the 14th World Conference on Earthquake Engineering, (2008); 
Journal of Catastrophology, (1991); 
Molina-Palacios, Sergio, SELENA - An open-source tool for seismic risk and loss assessment using a logic tree computation procedure, Computers and Geosciences, 36, 3, pp. 257-269, (2010); 
Probabilistic Seismic Hazard Analysis and Seismic Damage Prediction, (1999); 
International Workshop on Earthquake Injury Epidemiology for Mitigation and Response, (1989); 
Proceedings of the Fourth International Conference on Seismic Zonation, (1991)
PUBLISHER: Tsinghua University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, F., Yang, S.
AUTHOR FULL NAMES: Liu, Feng (58842781300); Yang, Shunhu (55799636400)
58842781300; 55799636400
The effect of the Wenchuan earthquake on the fluvial morphology in the Longmen Shan, eastern Tibetan Plateau: Discussion and speculation
(2015) Quaternary International, 371, pp. 280 - 289, Cited 12 times.
DOI: 10.1016/j.quaint.2014.09.021
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930274233&doi=10.1016%2Fj.quaint.2014.09.021&partnerID=40&md5=1d80cf339461a15f593a9242d34ab65d

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Although large earthquakes can have significant impacts on the geomorphology of mountain rivers, the consequences of such impacts remain poorly understood. The Ms 8.0 Wenchuan earthquake of 12 May 2008 created knickpoints (waterfalls) in the river systems of the Longmen Shan, eastern Tibet Plateau, in addition to numerous landslides along rivers. In this study, we use high-resolution remote sensing images and field surveys to examine how the Baisha and Jianjiang River channels responded to the Wenchuan earthquake. The morphological response along the Baisha River was a knickpoint, with a height of 4.5 m, which was studied from 2008 to 2012. However, the river did not show rapid incision via knickpoint migration during the post-earthquake period. In fact, post-seismic flooding destroyed the face of the co-seismic knickpoint. The rapid removal of the knickpoint suggests that the abrupt vertical displacement associated with the earthquake did not exceed the adjustment threshold of the fluvial dynamic equilibrium, and so was unable to drive rapid morphological change at the local scale. Along the Jianjiang River, the average meander migration rate of the Beichuan reach was -2.8 m/yr between 2001 and 2008, but increased to 51.1 m/yr during the five years following the 2008 Wenchuan earthquake. This rapid increase in the meander migration rate is attributed to excess sediment supplied to the river as a consequence of the earthquake. These two case studies indicate that the Wenchuan earthquake caused channel aggradation rather than a significant increase in river incision by locally generating relief across the river. © 2014 Elsevier Ltd and INQUA.
AUTHOR KEYWORDS: Channel morphology; Co-seismic knickpoint; Landslide; Meandering migration rate; Wenchuan earthquake
INDEX KEYWORDS: channel morphology; coseismic process; landslide; meander; neotectonics; remote sensing; seismic migration; Sichuan earthquake 2008; China; Longmen Mountains; Qinghai-Xizang Plateau
REFERENCES: Origin and Significance of Sinuosity Along Incising Bedrock Rivers, (2008); 
Burbank, Douglas W., Tectonic Geomorphology: Second Edition, (2011); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Agu Fall Meeting, (2010); 
Chen, Chienyuan, Sedimentary impacts from landslides in the Tachia River Basin, Taiwan, Geomorphology, 105, 3-4, pp. 355-365, (2009); 
Knickpoint Retreat and Fluvial Incision Following the 1999 Chi Chi Earthquake Da an River Gorge Taiwan, (2010); 
Agu Fall Meeting, (2010); 
Dadson, Simon J., Links between erosion, runoff variability and seismicity in the Taiwan orogen, Nature, 426, 6967, pp. 648-651, (2003); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chang, M., Tang, C., Ni, H., Qu, Y.
AUTHOR FULL NAMES: Chang, Ming (36727157900); Tang, Chuan (35932953300); Ni, Huayong (36548802400); Qu, Yongping (56549385600)
36727157900; 35932953300; 36548802400; 56549385600
Evolution process of sediment supply for debris flow occurrence in the Longchi area of Dujiangyan City after the Wenchuan earthquake
(2015) Landslides, 12 (3), pp. 611 - 623, Cited 26 times.
DOI: 10.1007/s10346-015-0571-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930081399&doi=10.1007%2Fs10346-015-0571-8&partnerID=40&md5=d625df02be2b8da73ea8c0b00e9e6a9b

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan, China
ABSTRACT: In order to analyze the changes in the sediment budget after the Wenchuan earthquake and after the heavy rain events in the following years, 12 debris flow gullies in the Longchi Dujiangyan County were selected. A comparison of the TM images taken on 18 September 2007 (before the “5.12” Wenchuan earthquake) with the SPOT5 images taken on 10 February 2009 (after the “5.12” Wenchuan earthquake) indicates that the landslide area in the 12 debris flow watersheds increased from 83.1 × 103 m2 to 3126.5 × 103 m2. Also, the gully length increased by 60.55 %, and the area with deposits in the channel bed increased by 134.80 %. A comparison of the SPOT5 images taken on 10 February 2009 (after the “5.12” Wenchuan earthquake) with the WorldView-2 images taken on 26 April 2011 (after the large rainstorm event in August 2011) showed that the landslide area increased by 24.8 % from 3126.5 × 103 m2 to 3902.8 × 103 m2 while the gully length increased by 26 % and the channel deposits by 12 %. A comparison of the WorldView-2 images taken on 26 April 2011 with the WorldView-2 images taken on 14 July 2011 indicated that the landslide area increased in this relatively dry period by only 2.3 %. © 2015, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Debris flow; Dynamic evolution; Landslides; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Budget control; Debris; Deposits; Landforms; Landslides; Remote sensing; Storms; Debris flow occurrences; Debris flows; Dynamic evolution; Evolution process; Heavy rain event; Landslide areas; Sediment budgets; Wenchuan Earthquake; Earthquakes; debris flow; gully; landslide; remote sensing; sediment budget; Sichuan earthquake 2008; SPOT-5; China; Dujiangyan; Sichuan
REFERENCES: Alexander, David E., Urban landslides, Progress in Physical Geography, 13, 2, pp. 157-189, (1989); 
Journal of Mountain Sciences, (2012); 
Chang, Ming, Debris flow susceptibility assessment using a probabilistic approach: A case study in the Longchi area, Sichuan province, China, Journal of Mountain Science, 11, 4, pp. 1001-1014, (2014); 
Ma, Chao, Comparison of debris-flow volume and activity under different formation conditions, Natural Hazards, 67, 2, pp. 261-273, (2013); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009); 
Hürlimann, Marcel, Detailed debris flow hazard assessment in Andorra: A multidisciplinary approach, Geomorphology, 78, 3-4, pp. 359-372, (2006); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Koi, Takashi, Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan, Geomorphology, 101, 4, pp. 692-702, (2008)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, J., Yu, Y., Pan, H.-L., Qiao, C., Ou, G.-Q.
AUTHOR FULL NAMES: Wang, Jun (57214696475); Yu, Yan (56364602800); Pan, Huali (23493786200); Qiao, Cheng (59662938100); Ou, Guoqiang (8891006800)
57214696475; 56364602800; 23493786200; 59662938100; 8891006800
Debris flow formation process and critical hydrodynamic conditions in the meizoseismal area of the Wenchuan earthquake
(2015) Journal of Mountain Science, 12 (3), pp. 699 - 710, Cited 10 times.
DOI: 10.1007/s11629-014-3370-0
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930201284&doi=10.1007%2Fs11629-014-3370-0&partnerID=40&md5=944bc2a5ba5746a965456851815331b1

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Wenchuan earthquake generated strong surface disturbances and triggered a large number of loose deposits, resulting in the disaster-prone environment with special watershed hydrological characteristics. This paper was to propose a debris flow formation process and explore the permeability characteristics and critical hydrodynamic conditions of the loose deposits triggered by the earthquake. The Guo Juanyan gully (31°05′27″ N to 31°05′46″ N, 103°36′58″ E to 103°37′09″ E) in Du Jiangyan City, located in the meizoseismal areas of the Wenchuan earthquake, was chosen as the study area and the disaster-prone environment was analyzed. The formation process of the debris flow was first proposed using a stability analysis, and then, the permeability characteristics of loose deposits were determined via in situ permeability experiments. Finally, the critical 1 h rainfall was simulated through a distributed hydrological model and verified by field observations. The formation process of debris flow could be divided into three stages based on the relationship between the hydrodynamic force and loose deposit resistance. The critical 1 h rainfall amounts under three antecedent moisture conditions (I-dry, II-normal and Ill-wet) were 52 mm/h, 43 mm/h and 34 mm/h, respectively. This study proposed a debris flow formation process in the meizoseismal areas of the Wenchuan earthquake based on the stability analysis and defined the rainfall threshold for debris flow early warning at the local level, which is significant for debris flow mitigation and risk management. © 2015, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Debris flow; Disaster-prone environment; Hydrodynamic condition; Permeability characteristics; Wenchuan Earthquake
INDEX KEYWORDS: debris flow; hydrodynamic force; hydrodynamics; permeability; rainfall; seismic zone; Sichuan earthquake 2008; stability analysis; trigger mechanism; China; Dujiangyan; Sichuan
REFERENCES: Journal of Mountain Science, (2013); 
Journal of Mountain Science, (2008); 
Formation Mechanism and Risk Control in Wenchuan Earthquake of Mountain Disaster, (2011); 
Dunne, Thomas, Effects of Rainfall, Vegetation, and Microtopography on Infiltration and Runoff, Water Resources Research, 27, 9, pp. 2271-2285, (1991); 
Gregoretti, Carlo, The initiation of debris flow at high slopes: Experimental results, Journal of Hydraulic Research/De Recherches Hydrauliques, 38, 2, pp. 83-88, (2000); 
Gregoretti, Carlo, The triggering of debris flow due to channel-bed failure in some alpine headwater basins of the Dolomites: Analyses of critical runoff, Hydrological Processes, 22, 13, pp. 2248-2263, (2008); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
J Eng Geol, (2013); 
Proceedings of the 13th Conference on Hydraulic Engineering in Taiwan Chinese Taipei 2324 November 2002, (2002); 
Liu, Chuanzheng, Basic feature and origin of the "8·8" mountain torrent-debris flow disaster happened in Zhouqu County, Gansu, China, Aug. 8, 2010, Geological Bulletin of China, 30, 1, pp. 141-150, (2011)
PUBLISHER: Science Press shengtaixuebao@mail.rcees.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Kritikos, T., Robinson, T.R., Davies, T.R.H.
AUTHOR FULL NAMES: Kritikos, Theodosios (54793202300); Robinson, Tom R. (55890147600); Davies, Timothy R.H. (7401742768)
54793202300; 55890147600; 7401742768
Regional coseismic landslide hazard assessment without historical landslide inventories: A new approach
(2015) Journal of Geophysical Research: Earth Surface, 120 (4), pp. 711 - 729, Cited 120 times.
DOI: 10.1002/2014JF003224
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027921805&doi=10.1002%2F2014JF003224&partnerID=40&md5=f9a74dea8baf52558a3f514865022804

AFFILIATIONS: Department of Geological Sciences, University of Canterbury, Christchurch, CAN, New Zealand
ABSTRACT: Currently, regional coseismic landslide hazard analyses require comprehensive historical landslide inventories as well as detailed geotechnical data. Consequently, such analyses have not been possible where these data are not available. A new approach is proposed herein to assess coseismic landslide hazard at regional scale for specific earthquake scenarios in areas without historical landslide inventories. The proposed model employs fuzzy logic and geographic information systems to establish relationships between causative factors and coseismic slope failures in regions with well-documented and substantially complete coseismic landslide inventories. These relationships are then utilized to estimate the relative probability of landslide occurrence in regions with neither historical landslide inventories nor detailed geotechnical data. Statistical analyses of inventories from the 1994 Northridge and 2008 Wenchuan earthquakes reveal that shaking intensity, topography, and distance from active faults and streams are the main controls on the spatial distribution of coseismic landslides. Average fuzzy memberships for each factor are developed and aggregated to model the relative coseismic landslide hazard for both earthquakes. The predictive capabilities of the models are assessed and show good-to-excellent model performance for both events. These memberships are then applied to the 1999 Chi-Chi earthquake, using only a digital elevation model, active fault map, and isoseismal data, replicating prediction of a future event in a region lacking historic inventories and/or geotechnical data. This similarly results in excellent model performance, demonstrating the model's predictive potential and confirming it can be meaningfully applied in regions where previous methods could not. For such regions, this method may enable a greater ability to analyze coseismic landslide hazard from specific earthquake scenarios, allowing for mitigation measures and emergency response plans to be better informed of earthquake-related hazards. ©2015. American Geophysical Union. All Rights Reserved.
AUTHOR KEYWORDS: coseismic landslides; fuzzy logic; GIS; ground shaking intensity; hazard; topography
INDEX KEYWORDS: Chi-Chi earthquake 1999; coseismic process; fuzzy mathematics; GIS; hazard assessment; historical record; inventory; landslide; Northridge earthquake 1994; Sichuan earthquake 2008; slope failure; statistical analysis; topography
REFERENCES: Agterberg, Frederik P., Conditional independence test for weights-of-evidence modeling, Natural Resources Research, 11, 4, pp. 249-255, (2002); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Athanasopoulos, G., Effects of surface topography on seismic ground response in the Egion (Greece) 15 June 1995 earthquake, Soil Dynamics and Earthquake Engineering, 18, 2, pp. 135-149, (1999); 
Hawth S Analysis Tools for Arcgis, (2004); 
Geographic Information Systems for Geoscientists Modelling with GIS, (1994); 
Bray, Jonathan D., Pseudostatic coefficient for use in simplified seismic slope stability evaluation, Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 135, 9, pp. 1336-1340, (2009); 
Brune, James N., Shattered rock and precarious rock evidence for strong asymmetry in ground motions during thrust faulting, Bulletin of the Seismological Society of America, 91, 3, pp. 441-447, (2001); 
Buech, F., The little red hill seismic experimental study: Topographic effects on ground motion at a bedrock-dominated mountain edifice, Bulletin of the Seismological Society of America, 100, 5 A, pp. 2219-2229, (2010); 
Carrara, Alberto, GIS techniques and statistical models in evaluating landslide hazard, Earth Surface Processes and Landforms, 16, 5, pp. 427-445, (1991); 
Geographical Information Systems in Assessing Natural Hazards, (1995)
PUBLISHER: Blackwell Publishing Ltd customerservices@oxonblackwellpublishing.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Liu, F., Li, J., Yang, S.
AUTHOR FULL NAMES: Liu, Feng (58842781300); Li, Jianfeng (55976839400); Yang, Shunhu (55799636400)
58842781300; 55976839400; 55799636400
Landslide erosion associated with the Wenchuan earthquake in the Minjiang River watershed: Implication for landscape evolution of the Longmen Shan, eastern Tibetan Plateau
(2015) Natural Hazards, 76 (3), pp. 1911 - 1926, Cited 18 times.
DOI: 10.1007/s11069-014-1575-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925507013&doi=10.1007%2Fs11069-014-1575-8&partnerID=40&md5=94bc48a4d7daf49f556e855852053b98

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: In tectonically active mountain belts, earthquakes can contribute to surface erosion by generating large-scale landslides. This study focuses on establishing the relationship between surface erosion caused by the earthquake-induced landslides and landscape evolution of the Longmen Shan, eastern Tibet Plateau. The inventory of landslides related to the 2008 Wenchuan earthquake in the Minjiang River watershed was based on high-resolution remote sensing images and field surveys. The estimated landslide erosion rate related to the Wenchuan earthquake is of the order 0.4–0.6 mm year−1 on both sides of the Minjiang River and its tributaries. This erosion is similar to erosion rates of 0.5–0.8 mm year−1 measured by low-temperature thermochronology over a Myr-timescale. The landslides associated with repeated large earthquakes may contribute to this Myr-timescale surface erosion via enhanced erosion efficiency. Post-seismic high-resolution digital elevation models covering the period from 2008 and 2012 were compared to quantify fluvial erosion in the Baisha River, a tributary of the Minjiang River. The volume of eroded materials was approximately 1.9 × 104 m3 over the 4-year period. In addition, the rapid removal of co-seismic knickpoints indicates significant post-seismic river transportation. If large earthquakes, such as the Wenchuan earthquake, have occurred at intervals of 2,000–3,000 years, then the associated rapid landslide erosion together with fluvial erosion during inter-seismic intervals may have played an important role in shaping the present landscape of the Longmen Shan. © 2015, Springer Science+Business Media Dordrecht.
AUTHOR KEYWORDS: Landscape evolution; Landslide; Longmen Shan; Minjiang River; Surface erosion; Wenchuan earthquake
REFERENCES: Avouac, Jean Philippe, Dynamic Processes in Extensional and Compressional Settings - Mountain Building: From Earthquakes to Geological Deformation, 6, pp. 377-439, (2007); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chen, Lichun, Paleoseismology and kinematic characteristics of the Xiaoyudong rupture, a short but significant strange segment characterized by the May 12, 2008, Mw 7.9 earthquake in Sichuan, China, Tectonophysics, 584, pp. 91-101, (2013); 
Chen, Qiang, Quantification of mass wasting volume associated with the giant landside Daguangbao induced by the 2008 Wenchuan earthquake from persistent scatterer InSAR, Remote Sensing of Environment, 152, pp. 125-135, (2014); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Seismology and Geology, (1994); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Atlas of Seismological and Geological Disasters Associated with the 12 May 2008 Ms 8 0 Wenchuan Great Earthquake Sichuan China, (2009)
PUBLISHER: Kluwer Academic Publishers
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zeng, T., Ghulam, A., Yang, W., Grzovic, M., Maimaitiyiming, M.
AUTHOR FULL NAMES: Zeng, Tao (58587229300); Ghulam, Abduwasit (6507293434); Yang, Wunian (7407756597); Grzovic, Mark (56377384300); Maimaitiyiming, Matthew (56023783000)
58587229300; 6507293434; 7407756597; 56377384300; 56023783000
Estimating the contribution of loose deposits to potential landslides over Wenchuan earthquake zone, China
(2015) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 8 (2), art. no. 6895138, pp. 750 - 762, Cited 8 times.
DOI: 10.1109/JSTARS.2014.2349953
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027957180&doi=10.1109%2FJSTARS.2014.2349953&partnerID=40&md5=6aa25a6c41e13ab77634aa4047ed272d

AFFILIATIONS: Department of Surveying & Mapping Engineering, Chengdu University of Technology, Chengdu, China; Key Laboratory of Geoscience Spatial Information Technology, Chengdu University of Technology, Chengdu, China; Center for Sustainability, School of Science and Engineering, St. Louis, MO, United States
ABSTRACT: Loose deposits may lead to catastrophic landslides and rockslides especially during or after heavy rainfall events. In this paper, we propose a method to estimate the volume and spatial distribution (VSD) of loose deposits using airborne and spaceborne optical remote sensing data and Interferometric Synthetic Aperture Radar (InSAR) coherence. The estimated VSD of coseismic loose deposits in Wenchuan, China, the epicenter of the Sichuan Earthquake, is then used to predict potential landslides. First, high-resolution digital elevation models (DEMs) and digital orthophoto map (DOM) are developed using stereo imagery collected by an unmanned aerial vehicle (UAV) over a core test site. Next, the VSD of loose deposits is determined using the UAV imagery, DEM, and a landslide inventory map developed by field surveys, and a power-law relationship between the area and volume is established. In order to determine the loose deposits of the entire study area, the InSAR coherence of PALSAR images collected before and right after the earthquake, Landsat image classification, and DEM combined with Analytical Hierarchy Process (AHP) model are integrated in a decision tree algorithm. Finally, we develop a quantitative method of determining the severity and likelihood of potential geohazards based on VSD of coseismic loose deposits and other variables including the Normalized Difference Vegetation Index (NDVI), slope gradient, elevation, and land-cover/land-use (LCLU). A total of 42 catchments area are identified as the hot spots with a very high or high possibility of potential landslides. The VSD of coseismic loose deposits over these catchments is about 92.34% and 77.96% of the total potential loose deposits area. © 2014 IEEE.
AUTHOR KEYWORDS: Landslide; loose deposits; remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Catchments; Data mining; Decision trees; Deposits; Image classification; Landslides; Rain; Remote sensing; Runoff; Space-based radar; Stereo image processing; Surveying; Synthetic aperture radar; Trees (mathematics); Unmanned aerial vehicles (UAV); Unmanned vehicles; Analytical Hierarchy Process; Catastrophic landslides; Digital elevation model; Interferometric synthetic aperture radars; Loose deposits; Normalized difference vegetation index; Optical remote sensing data; Wenchuan Earthquake; Earthquakes; analytical hierarchy process; coseismic process; digital elevation model; image classification; Landsat thematic mapper; landslide; NDVI; orthophoto; remote sensing; Sichuan earthquake 2008; synthetic aperture radar; China
REFERENCES: Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011); 
Ma, Chao, Comparison of debris-flow volume and activity under different formation conditions, Natural Hazards, 67, 2, pp. 261-273, (2013); 
Zhang, Shuai, Assessment of risks of loose landslide deposits formed by the 2008 Wenchuan earthquake, Natural Hazards and Earth System Sciences, 12, 5, pp. 1381-1392, (2012); 
Cui, Peng, Risk assessment of highways affected by debris flows in Wenchuan earthquake area, Journal of Mountain Science, 10, 2, pp. 173-189, (2013); 
Cui, Peng, Risk assessment of simultaneous debris flows in mountain townships, Progress in Physical Geography, 37, 4, pp. 516-542, (2013); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Bai, Shibiao, Combined landslide susceptibility mapping after Wenchuan earthquake at the Zhouqu segment in the Bailongjiang Basin, China, Catena, 99, pp. 18-25, (2012); 
Guo, Deping, Qualitative and quantitative analysis on landslide influential factors during Wenchuan earthquake: A case study in Wenchuan County, Engineering Geology, 152, 1, pp. 202-209, (2013)
PUBLISHER: Institute of Electrical and Electronics Engineers
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, M., Liu, M.B., Xie, M.-W., Liu, G.R.
AUTHOR FULL NAMES: Hu, Man (59599809600); Liu, Moubin (7406297665); Xie, Mowen (7202255467); Liu, Guirong (8242077900)
59599809600; 7406297665; 7202255467; 8242077900
Three-dimensional run-out analysis and prediction of flow-like landslides using smoothed particle hydrodynamics
(2015) Environmental Earth Sciences, 73 (4), pp. 1629 - 1640, Cited 46 times.
DOI: 10.1007/s12665-014-3513-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921701215&doi=10.1007%2Fs12665-014-3513-1&partnerID=40&md5=640a8c0456d7c9297cd1804c59edcf68

AFFILIATIONS: School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, China; College of Engineering and Applied Science, Cincinnati, OH, United States; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Many landslides can often be characterized as a sort of landslides which move rapidly like flowing fluid and thus have a long run-out. They usually cause large damage and casualties especially when they are trigged by an earthquake or heavy rain. Numerical simulations of flow-like landslides are difficult due to the existence of free surface and large flow deformations. In this work, the smoothed particle hydrodynamics (SPH) method is applied to model two- and three-dimensional flow-like landslides for the run-out analysis. This is because SPH method is a meshfree, Lagrangian particle method, and is believed to be superior to conventional numerical methods in treating free surfaces, moving interfaces, and large deformations; hence, it is ideal in describing the complex fluidization characteristics in flow-like landslides. In this paper, a Bingham flow model and Navier–Stokes equations are incorporated into the SPH frame work, in which fluids are discretized by flow particles, and 3D terrain topography from GIS is represented by surface (or solid wall) particles. An improved SPH method is first applied to simulate the whole run-out processes of three flow-like landslides, which were triggered by Wenchuan earthquake that occurred in China in 2008. The effectiveness of the improved SPH method in modeling flow-like landslides is demonstrated by the good agreement of the 3D profile simulation results obtained from the present SPH simulation with field observation and results from other open sources. The SPH method is then used to predict the run-out area of Jinpingzi landslide. © 2014, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Flow-like landslides; Hazardous area prediction; Run-out analysis; Smoothed particle hydrodynamics; Three-dimensional simulation
INDEX KEYWORDS: Crystallography; Deformation; Earthquakes; Fluidization; Forecasting; Landslides; Navier Stokes equations; Numerical methods; Topography; Fluidization characteristics; Hazardous area; Lagrangian particle method; Run outs; Smoothed particle hydrodynamics; Smoothed particle hydrodynamics methods; Three dimensional simulations; Three-dimensional flow; Hydrodynamics
REFERENCES: Cascini, Leonardo, SPH run-out modelling of channelised landslides of the flow type, Geomorphology, 214, pp. 502-513, (2014); 
Chen, J. K., A generalized smoothed particle hydrodynamics method for nonlinear dynamic problems, Computer Methods in Applied Mechanics and Engineering, 190, 1-2, pp. 225-239, (2000); 
Colagrossi, A., Numerical simulation of interfacial flows by smoothed particle hydrodynamics, Journal of Computational Physics, 191, 2, pp. 448-475, (2003); 
Dai, Zili, 3D numerical modeling using smoothed particle hydrodynamics of flow-like landslide propagation triggered by the 2008 Wenchuan earthquake, Engineering Geology, 180, pp. 21-33, (2014); 
Duncan, James Michael, State of the art: Limit equilibrium and finite-element analysis of slopes, Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 122, 7, pp. 577-596, (1996); 
Eberhardt, Erick, Numerical analysis of initiation and progressive failure in natural rock slopes-the 1991 Randa rockslide, International Journal of Rock Mechanics and Mining Sciences, 41, 1, pp. 69-87, (2004); 
Hadush, S., Importance of viscous fluid characteristics in liquefaction induced lateral spreading analysis, Computers and Geotechnics, 27, 3, pp. 199-224, (2000); 
Hammouri, Nezar Atalla, Stability analysis of slopes using the finite element method and limiting equilibrium approach, Bulletin of Engineering Geology and the Environment, 67, 4, pp. 471-478, (2008); 
Hu, Xiewen, Analysis of blocking river mechanism of Tangjiashan landslide and dam-breaking mode of its barrier dam, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, 1, pp. 181-189, (2009)
PUBLISHER: Springer Verlag
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Wang, M., Shi, P., Van Westen, C., Kerle, N.
AUTHOR FULL NAMES: Yang, Wentao (55499294400); Wang, Ming (55732001400); Shi, Peijun (7202160985); Van Westen, Cees J. (6701664942); Kerle, Norman (55893253300)
55499294400; 55732001400; 7202160985; 6701664942; 55893253300
Mapping coseismic landslide damaged buildings during the 2008 Wenchuan Earthquake in rural mountainous area
(2015), pp. 219 - 224, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960119242&partnerID=40&md5=c1a8de0c2148747d9cdafb2d1198451d

AFFILIATIONS: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China; Department of Earth Systems Analysis, Universiteit Twente, Enschede, Overijssel, Netherlands
ABSTRACT: Determining the location of coseismic landslides damaged buildings is critical to the understanding of human losses from earthquake-induced landslides during major earthquakes in mountainous regions. Because of the vast area of the earthquake affected region and the sparse locations of rural settlements, previous knowledge on buildings and human losses resulting from coseismic landslides mainly rely on rough estimations from limited field work. Application of high resolution satellite remote sensing opens a new way to map pre-seismic rural mountainous housing over large areas, and thus can accurately determine the location of coseismic landslide damaged housing spatially. In this work, we used the 2008 Wenchuan Earthquake as an example and use SPOT5 images taken before the earthquake for a seimi-automated mapping of buildings in rural areas. Then, by spatial overlay analysis with an existing coseismic landslide inventory, we mapped the location of landslide damaged buildings in this area. This semi-automatic method can be further applied to the entire Wenchuan Earthquake affected region to determine the locations of all landslides damaged buildings and finally improve the performance of earthquake loss estimation models. © 2015 Taylor & Francis Group, London.
INDEX KEYWORDS: Buildings; Environmental engineering; Environmental technology; Geophysics; Housing; Landslides; Location; Mapping; Remote sensing; Rural areas; 2008 wenchuan earthquakes; Earthquake loss estimation; Earthquake-induced landslides; High resolution satellites; Landslide inventories; Mountainous regions; Semiautomatic methods; Wenchuan Earthquake; Earthquakes
REFERENCES: As-syakur, Abd. Rahman, Enhanced built-UP and bareness index (EBBI) for mapping built-UP and bare land in an urban area, Remote Sensing, 4, 10, pp. 2957-2970, (2012); 
Azar, Derek, Generation of fine-scale population layers using multi-resolution satellite imagery and geospatial data, Remote Sensing of Environment, 130, pp. 219-232, (2013); 
Azar, Derek, Spatial refinement of census population distribution using remotely sensed estimates of impervious surfaces in Haiti, International Journal of Remote Sensing, 31, 21, pp. 5635-5655, (2010); 
Budimir, M. E.A., Earthquake-and-landslide events are associated with more fatalities than earthquakes alone, Natural Hazards, 72, 2, pp. 895-914, (2014); 
Fell, Robin, Guidelines for landslide susceptibility, hazard and risk zoning for land-use planning, Engineering Geology, 102, 3-4, pp. 99-111, (2008); 
Subpixel Impervious Surface Mapping, (2001); 
Proceedings of the First World Landslide Forum, (2008); 
Görüm, Tolga, Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake, Geomorphology, 184, pp. 127-138, (2013); 
Harp, Edwin L., Landslide inventories: The essential part of seismic landslide hazard analyses, Engineering Geology, 122, 1-2, pp. 9-21, (2011); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009)
PUBLISHER: CRC Press/Balkema Pub.NL@taylorandfrancis.com
CONFERENCE NAME: 5th International Conference on Environmental Science and Information Application Technology, ESIAT 2014
CONFERENCE DATE: 2014-11-07 through 2014-11-08
CONFERENCE LOCATION: Hong Kong
CONFERENCE CODE: 156819
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, L., Nishie, S., Uchimura, T., Qiao, J., Tian, H., Yang, Z.
AUTHOR FULL NAMES: Wang, Lin (55721353300); Nishie, Shunsaku (6507401117); Uchimura, Taro (7007007474); Qiao, Jianping (24485090400); Tian, Hongling (14520009600); Yang, Zongji (24485723300)
55721353300; 6507401117; 7007007474; 24485090400; 14520009600; 24485723300
Stability monitoring of earthquake-induced rockfall
(2015), pp. 17 - 22, Cited 0 times.
DOI: 10.3208/jgssp.JPN-28
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959357200&doi=10.3208%2Fjgssp.JPN-28&partnerID=40&md5=e7d5dba6726859199cd6c1dcd5104d88

AFFILIATIONS: Chuo Kaihatsu Corporation, Tokyo, Japan; The University of Tokyo, Tokyo, Japan; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: An early warning monitoring system is one of the most effective ways to reduce disasters induced by slope instabilities. The 2008 Ms 8.0 Wenchuan earthquake that occurred in Sichuan province, China, induced more than 197000 slope failures and landslides. To reduce vulnerability to such slope and landslide hazards, an early warning system becomes important, and for this purpose, a newly developed simple and low-cost early warning system for slope failure and landslides is presented here. The new system is based on a tilt sensor that is easy to install. The sensor can monitor water content and slope deformation with a tilt MEMS (Micro Electro Mechanical Systems) module embedded in the sensor unit, and it can transfer real time data via a wireless network. Since 2010, the monitoring system has been used in seven actual large-scale slope failure and landslide sites to validate field performance. In this paper, we report on one monitoring case to show that the early warning system adequately monitors the stability of slope and debris fields in China. Based on the field site test results, the monitoring method is proposed for regions of increased hazard of earthquake-induced slope failure.
AUTHOR KEYWORDS: Early Warning; Landslide; Monitoring; Slope Failure
INDEX KEYWORDS: Earthquakes; Embedded systems; Geophysics; Hazards; Landslides; MEMS; Real time systems; Rock bursts; Slope stability; Wireless sensor networks; Early warning; Early Warning System; Micro electro mechanical system; Monitoring methods; Slope failure; Stability monitoring; Stability of slopes; Wenchuan Earthquake; Monitoring
REFERENCES: Historical Rock Falls in Yosemite National Park California 1857 2011, (2013); 
Proceedings of the International Conference on Fast Slope Movement Prediction and Prevention for Risk Mitigation Fsm2003, (2003); 
Uchimura, Taro, Development of low-cost early warning system of slope instability for civilian use, 3, pp. 1897-1900, (2009); 
International Workshop on ICT in Geo Engineering Ictge 2012, (2012); 
Chinese Journal of Engineering Geology, (2013)
PUBLISHER: Japanese Geotechnical Society kaishi@jiban.or.jp
CONFERENCE NAME: 6th Japan-China Geotechnical Symposium, SJGS 2015
CONFERENCE DATE: 2015-08-31 through 2015-09-01
CONFERENCE LOCATION: Hokkaido
CONFERENCE CODE: 117873
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Lin, Y., Wang, W., Wen, Q., Huang, H., Lin, J., Zhang, W.
AUTHOR FULL NAMES: Lin, Yueguan (57209831362); Wang, Wei (59105127100); Wen, Qi (58458875100); Huang, He (56082683800); Lin, Jingli (57103975700); Zhang, Wei (57104056100)
57209831362; 59105127100; 58458875100; 56082683800; 57103975700; 57104056100
Multi-source and multi-angle remote sensing image data collection, application and sharing of Beichuan National Earthquake Ruins Museum
(2015) Proceedings of SPIE - The International Society for Optical Engineering, 9815, art. no. 981516, Cited 1 times.
DOI: 10.1117/12.2204777
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957676272&doi=10.1117%2F12.2204777&partnerID=40&md5=9af137cf7fd0ff6eeaf1f785021c5d23

AFFILIATIONS: National Disaster Reduction Center of China, MCA, Beijing, China; Key Laboratory of Disaster Reduction and Emergency Response Engineering of the MCA, China; Shaanxi Zhongshi Geological Science Co., Ltd, Xi'an, Shaanxi, China
ABSTRACT: Ms8.0 Wenchuan earthquake that occurred on May 12, 2008 brought huge casualties and property losses to the Chinese people, and Beichuan County was destroyed in the earthquake. In order to leave a site for commemorate of the people, and for science propaganda and research of earthquake science, Beichuan National Earthquake Ruins Museum has been built on the ruins of Beichuan county. Based on the demand for digital preservation of the earthquake ruins park and collection of earthquake damage assessment of research and data needs, we set up a data set of Beichuan National Earthquake Ruins Museum, including satellite remote sensing image, airborne remote sensing image, ground photogrammetry data and ground acquisition data. At the same time, in order to make a better service for earthquake science research, we design the sharing ideas and schemes for this scientific data set. © 2015 SPIE.
AUTHOR KEYWORDS: close range photogrammetry data; data sharing strategy making; disaster loss evaluation; disaster ruins 3D scene construction; Lidar data; optimized acquisition; satellite remote sensing data; UVA remote sensing data
INDEX KEYWORDS: Damage detection; Data acquisition; Data handling; Digital storage; Disasters; Earthquakes; Geographic information systems; Geophysics; Image processing; Image reconstruction; Information systems; Pattern recognition; Pattern recognition systems; Photogrammetry; 3D scenes; Close range photogrammetry; Data Sharing; LIDAR data; optimized acquisition; Remote sensing data; Satellite remote sensing data; Remote sensing
REFERENCES: Journal of Mountain Science, (2009); 
Journal of Remote Sensing, (2009); 
Research on Interpretation and Hazard Assessment of Geohazards in Strong Earthquake Area Using 3s Technology of Sichuan Province, (2010); 
Yamaguchi, Yoshio, Disaster monitoring by fully polarimetric SAR data acquired with ALOS-PALSAR, Proceedings of the IEEE, 100, 10, pp. 2851-2860, (2012); 
Journal of Remote Sensing, (2008); 
Principle and Application of the Airborne Laser Radar, (2010); 
Geomatics World, (2014); 
Xiao, Jing, Building extraction from oblique airborne imagery based on robust façade detection, ISPRS Journal of Photogrammetry and Remote Sensing, 68, 1, pp. 56-68, (2012); 
Remote Sensing Technology and Application, (2012)
PUBLISHER: SPIE spie@spie.org
SPONSORS: Huazhong University of Science and Technology, Hubei Association of Automation, Hubei University for Nationalities, National Key Laboratory on Science and Technology on Multi-spectral Information Processing
CONFERENCE NAME: 9th International Symposium on Multispectral Image Processing and Pattern Recognition: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications, MIPPR 2015
CONFERENCE DATE: 2015-10-31 through 2015-11-01
CONFERENCE LOCATION: Enshi, Hubei
CONFERENCE CODE: 117773
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tang, C., Jiang, Z., Li, W.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Jiang, Zhilin (56909145300); Li, Weile (25936551300)
35932953300; 56909145300; 25936551300
Seismic landslide evolution and debris flow development: A case study in the Hongchun Catchment, Wenchuan area of China
(2015), pp. 445 - 449, Cited 16 times.
DOI: 10.1007/978-3-319-09057-3_72
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944590936&doi=10.1007%2F978-3-319-09057-3_72&partnerID=40&md5=77566ddf03748e7957beb3ba9dc7fb70

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A strong earthquake not only triggered large numbers of co-seismic landslides but also contributed afterwards to an increase in rainfall triggered landslide activity and the development of devastating debris flows. In this paper, a typical catchment of the Hongchun gully near the epicenter of the Wenchuan earthquake (Sichuan Province, China) was chosen as a case study area, for a remote sensing analysis of landslide evolution and debris flow development prior to and after the Wenchuan earthquake. This study reveals that earthquake shaking severely disturbed surface strata, posing a potential continuing hazard in the region, as the slopes are very susceptible to future land sliding and debris flows under heavy rainfall conditions. . © Springer International Publishing Switzerland 2015.
AUTHOR KEYWORDS: Debris Flow; Intense Rainfall; Landslide Evolution; Remote Sensing Imagery; Wenchuan Earthquake
INDEX KEYWORDS: Catchments; Debris; Landslides; Rain; Remote sensing; Runoff; Debris flows; Earthquake shaking; Intense rainfalls; Remote sensing analysis; Remote sensing imagery; Seismic landslides; Strong earthquakes; Wenchuan Earthquake; Earthquakes
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Khattak, Ghazanfar Ali, Evolution of earthquake-triggered landslides in the Kashmir Himalaya, northern Pakistan, Geomorphology, 115, 1-2, pp. 102-108, (2010); 
Koi, Takashi, Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan, Geomorphology, 101, 4, pp. 692-702, (2008); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011)
PUBLISHER: Springer International Publishing
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Lin, J.-W.
AUTHOR FULL NAMES: Lin, Jyh Woei (35435351700)
35435351700
Early warning of tsunami from seismo-ionospheric fluctuation after Japan’s March 11, 2011, M=9.0 Tohoku earthquake using two-dimensional principal component analysis
(2015) Annals of Geophysics, 58 (4), art. no. A0442, Cited 5 times.
DOI: 10.4401/ag-6710
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943235092&doi=10.4401%2Fag-6710&partnerID=40&md5=aee0a1ee254dd748f661ea1ddd151031

AFFILIATIONS: Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
ABSTRACT: Two-dimensional principal component analysis (2DPCA) is implemented to analyze the total electron content (TEC) anomalies after Japan’s Tohoku earthquake that occurred at 05:46 on March 11, 2011 (UTC) (M<inf>w</inf>=9). 2DPCA and TEC data processing were conducted just after this devastating earthquake. Analysis results show an earthquakeassociated TEC anomaly near the epicenter that began at 05:47. This may represent an extension of the precursor of the earthquake, to the precursor of China’s Wenchuan earthquake on May 12, 2008, detected by the study of Lin [2012], for which the data were obtained at a height of 150-200 km by the FORMOSAT-3 satellite system. It is impossible that such precursor caused by the acoustic shock waves. Another TEC anomaly near the epicenter occurred at 05:53, and this initiated the propagation of the tsunami effect related to the ionosphere through the acoustic shock waves from the epicenter. However, the TEC anomalies did not appear to be affected by a contemporaneous geomagnetic storm and other non-earthquake effects. The propagation of anomalous fluctuation could be an early warning of the tsunami for the regions far from the epicenter as it began to propagate with the higher speed of 3960-4950 km/h than the tsunami speed (720-800 km/h). © 2015 by the Istituto Nazionale di Geofisica e Vulcanologia. All rights reserved.
AUTHOR KEYWORDS: Geomagnetic storm; Tohoku earthquake; Total electron content; Tsunami; Two-dimensional principal component analysis
INDEX KEYWORDS: early warning system; earthquake precursor; geomagnetic storm; principal component analysis; shock wave; Tohoku earthquake 2011; tsunami; two-dimensional modeling; Honshu; Japan; Tohoku
REFERENCES: Chen, Chiahung, Long-distance propagation of ionospheric disturbance generated by the 2011 off the Pacific coast of Tohoku Earthquake, Earth, Planets and Space, 63, 7, pp. 881-884, (2011); 
Elsner, James Brian, Hurricane intensity changes associated with geomagnetic variation, Atmospheric Science Letters, 2, 1-4, pp. 86-93, (2001); 
Freund, Friedemann T., Rocks that crackle and sparkle and glow: Strange pre-earthquake phenomena, Journal of Scientific Exploration, 17, 1, pp. 37-71, (2003); 
J Geophys Res, (1988); 
Heki, Kousuke, Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array, Earth and Planetary Science Letters, 236, 3-4, pp. 845-855, (2005); 
Hernández-Pajares, Manuel, The IGS VTEC maps: A reliable source of ionospheric information since 1998, Journal of Geodesy, 83, 3-4, pp. 263-275, (2009); 
Jin, Shuanggen, Pattern and evolution of seismo-ionospheric disturbances following the 2011 Tohoku earthquakes from GPS observations, Journal of Geophysical Research: Space Physics, 119, 9, pp. 7914-7927, (2014); 
Kakinami, Yoshihiro, Ionospheric electron content anomalies detected by a FORMOSAT-3/COSMIC empirical model before and after the Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3571-3578, (2010); 
Real Time Kinematic Positioning with Nasas Global Differential GPS System, (2004); 
Hegai, Valery V., Anomalous variations in the foF2 critical frequency above Japan prior to the earthquake of March 9, 2011, Geomagnetism and Aeronomy, 53, 4, pp. 529-533, (2013)
PUBLISHER: Editrice Compositori s.r.l. 1865@compositori.it
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Chen, Y.L., Wu, J.C., Guo, L.Y., Wang, X.Y., Tan, H.B., Shen, C.Y.
AUTHOR FULL NAMES: Chen, Yanling (57196264422); Wu, Jicang (55711131300); Guo, Linying (57217408307); Wang, Xiaoya (55950659300); Tan, Hongbo (35735068900); Shen, Chongyang (7402859615)
57196264422; 55711131300; 57217408307; 55950659300; 35735068900; 7402859615
3D coseismic deformation inversion of Wenchuan Ms8.0 earthquake with D-InSAR and the fault movement model
(2015) Proceedings of SPIE - The International Society for Optical Engineering, 9669, art. no. 96690L, Cited 0 times.
DOI: 10.1117/12.2205112
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940183976&doi=10.1117%2F12.2205112&partnerID=40&md5=4e681a465e17b4045ba89b37c6476506

AFFILIATIONS: Shanghai Astronomical Observatory Chinese Academy of Sciences, Shanghai, Shanghai, China; College of Surveying and Geo-Informatics, Tongji University, Shanghai, China; China Earthquake Administration, Beijing, China
ABSTRACT: Conventional D-InSAR (Differential SAR Interferometry) can only monitor 1-D surface deformation along LOS (line of sight) direction. In order to overcome this limitation and extract 3-D coseismic displacement, we combine the LOS displacement derived from D-InSAR technology, the OKADA elastic half space dislocation model theory, jointly the surface rupture distribution by field investigations and the fault model inverted by GPS, level data and gravity survey to retrieve the directions of surface co-seismic displacement, and then have got Wenchuan Ms8.0 Earthquake 3D displacement. Firstly, thirty six L-band PALSAR images of six adjacent ascending tracks are processed with D-InSAR technology to obtain the coseismic displacements along LOS direction. According to the OKADA model and the thrust fault movement model of the Long-Men-Shan Fault, we specify the three directions of surface coseismic displacements. And thus the 3D coseismic displacement field is then recovered by using LOS displacement and relevant geometric projection formulas, obviously including horizontal displacements field and vertical deformation contour maps. By comparing with the 3D displacement estimated from OKADA dislocation model and fault model, the displacement retrieved in this study can give more detail, and reflect seismic characteristics more truly. © 2015 SPIE.
AUTHOR KEYWORDS: D-InSAR; Wenchuan earthquake; 3D coseismic displacement; OKADA model; fault model
INDEX KEYWORDS: Deformation; Earthquakes; Geometry; Geophysics; Motion compensation; Remote sensing; Seismology; Space optics; Co-seismic displacement; Coseismic deformation; Differential SAR interferometry; Dislocation modeling; Geometric projections; Horizontal displacements; Vertical deformation; Wenchuan Earthquake; Faulting
REFERENCES: Xu, Caijun, Coseismic slip distribution of the 2008 mw 7.9 Wenchuan earthquake from joint inversion of GPS and InSAR data, Bulletin of the Seismological Society of America, 100, 5 B, pp. 2736-2749, (2010); 
Feng, Guangcai, Coseismic fault slip of the 2008 Mw 7.9 Wenchuan earthquake estimated from InSAR and GPS measurements, Geophysical Research Letters, 37, 1, (2010); 
Qu, Chunyan, Spatial analysis of coseismic displacement field of the wenchuan M s 8.0 earthquake derived using D-insar, Dizhen Dizhi, 32, 2, pp. 175-190, (2010); 
Gamma Interferometric SAR Processor Users Guide 2003, (2003); 
Bull Seismol Soc Am, (1985); 
Sun, Jianbao, InSAR deformation observation and preliminary analysis of the MS8 Wenchuan earthquake, Dizhen Dizhi, 30, 3, pp. 789-795, (2008); 
Zhang, Guohong, Slip distribution and source parameters inverted from co-seismic deformation derived by InSAR technology of Wenchuan Mw7.9 earthquake, Acta Geophysica Sinica, 53, 2, pp. 269-279, (2010); 
Science in China Series D, (2008); 
Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009); 
Zhang, Peizlien Zhen, Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China, Acta Geophysica Sinica, 51, 4, pp. 1066-1073, (2008)
PUBLISHER: SPIE spie@spie.org
SPONSORS: China Meteorological Society, Committee on Satellite Meteorology and Space Weather, Chinese Society for Geodesy Photogrammetry and Cartography (CSGPC) Committee on Photogrammetry and Remote Sensing (CPRS), Chinese Society for Oceanology and Limnology, Chinese Society of Oceanography, Committee on Ocean Remote Sensing, et al., The Association on Environment Remote Sensing of China, The Geological Society of China, Committee of Remote Sensing for Geology
CONFERENCE NAME: Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China
CONFERENCE DATE: 2014-09-20 through 2014-09-23
CONFERENCE LOCATION: Xian
CONFERENCE CODE: 113730
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Xiong, J., Ming, S., Shan, L., Chao, P.
AUTHOR FULL NAMES: Xiong, Junnan (35308196800); Ming, Sun (56740374500); Shan, Liu (56740053800); Chao, Peng (56740227500)
35308196800; 56740374500; 56740053800; 56740227500
The debris flow hazard assessment of wenchuan earthquake-stricken area based on watershed unit
(2015) Electronic Journal of Geotechnical Engineering, 20 (14), pp. 6025 - 6034, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938150254&partnerID=40&md5=d71bdbc3daad00527eaa5d5fc493dcda

AFFILIATIONS: School of Civil Engineering and Architecture, SWPU, Chengdu, Sichuan, China; Chengdu, Southwest Petroleum University China, Chengdu, Sichuan, China
ABSTRACT: Since the "5.12" Wenchuan earthquake in 2008, Massive debris flow led by the heavy rainfalls has broken out each summer, which causes serious damage to people's lives and property. Given the destructiveness of debris flow, it's necessary to carry out hazard assessment and prevention work of debris flow in the Earthquake-stricken areas immediately. This article take where earthquake intensity above 7 degrees in Wenchuan as study area, after analyzing the characteristic of debris flow in Whenchuan, we take small watershed unit which debris flow formation as assessment unit, extracts watershed from GDEM data, and established hazard assessment index system with the energy condition, physical condition, as well as rainfall triggering conditions of the debris flow formation. On this basis, we establish debris flow hazard assessment model use extension matter-element theory, carrying out spatial analysis and valuation of each index factor by GIS, and completes debris flow hazard assessment of each watershed in the study area and marking different zones of the debris flow hazard. The experiment shows that the results in good agreement with actual situation of occurred debris flow, the result can offering scientific basis for government to formulate disaster prevention and mitigation decisions. © 2015 ejge.
AUTHOR KEYWORDS: Debris flow; GIS; Hazard assessment; Small watershed unit; Wenchuan earthquake-stricken areas
INDEX KEYWORDS: Debris; Disaster prevention; Earthquakes; Geographic information systems; Geophysics; Rain; Watersheds; Debris flow hazards; Debris flows; Disaster prevention and mitigations; Earthquake intensity; Hazard Assessment; Physical conditions; Small watersheds; Wenchuan Earthquake; Hazards; debris flow; earthquake intensity; earthquake magnitude; GIS; hazard assessment; rainfall; Sichuan earthquake 2008; spatial analysis; watershed
REFERENCES: Yu, Bin, Activity tendency of debris flow gully in Wenchuan County after "5.12" Wenchuan earthquake, Journal of Natural Disasters, 20, 6, pp. 68-73, (2011); 
Journal of Mountain Science, (2009); 
Analysis Research, (2013); 
Journal of Catastrophology, (2013); 
Wenchuan Earthquake Meizoseismal Area of Potential Sudden Debris Flow S Hazard Zonation and Evaluation Based on 3s Technology D, (2012); 
Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Ouimet, William B., Landslides associated with the May 12, 2008 Wenchuan earthquake: Implications for the erosion and tectonic evolution of the Longmen Shan, Tectonophysics, 491, 1-4, pp. 244-252, (2010); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Guzzetti, Fausto, Landslide hazard evaluation: A review of current techniques and their application in a multi-scale study, Central Italy, Geomorphology, 31, 1-4, pp. 181-216, (1999); 
Journal of Mountain Science, (2006)
PUBLISHER: E-Journal of Geotechnical Engineering oner@okstate.edu
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, H., Wang, X., Fan, J., Chi, T., Yang, S., Peng, L.
AUTHOR FULL NAMES: Zhang, Huaizhen (56201160600); Wang, Xiaomeng (57206604450); Fan, Jianrong (8727506000); Chi, Titanhe (7005693588); Yang, Shun (56701209900); Peng, Ling (56506111400)
56201160600; 57206604450; 8727506000; 7005693588; 56701209900; 56506111400
Monitoring earthquake-damaged vegetation after the 2008 Wenchuan earthquake in the mountainous river basins, Dujiangyan County
(2015) Remote Sensing, 7 (6), pp. 6808 - 6827, Cited 12 times.
DOI: 10.3390/rs70606808
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933575460&doi=10.3390%2Frs70606808&partnerID=40&md5=fa0fccdb75637e4036850f34e4e0e549

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Technical Center for Geological Hazard Prevention and Control, Chinese Geological Survey, Baoding, China
ABSTRACT: The 2008 Wenchuan earthquake destroyed large areas of vegetation in the Baisha River and Longxi River basins, in Dujiangyan County, China. There were several debris flow events in these mountainous river basins after 2008. Currently, these damaged vegetation areas are in various stages of recovery. This recovery vegetation improves the resistance of slopes to both surficial erosion and mass wasting. We introduce a probabilistic approach to determining the relationships between damaged vegetation and slope materials' stability, and model the sediment and flow (hydrological) connectivity index to detect the hydrological changes in a given river basin, using the multi-temporal (1994-2014) remote-sensing images to monitor the vegetation recovery processes. Our results demonstrated that the earthquake-damaged vegetation areas have coupling relationships with topographic environment and slope material properties, and can be used to assess the slope material stability. Further, our analysis results showed that the areas with horizontal distance to river streams < 500 m are areas that actively contribute sediment to the stream channel network, and are main material sources for debris flow processes in one given mountainous basin. © 2015 by the authors.
AUTHOR KEYWORDS: Earthquake; Hydrological connectivity; Remote sensing; Vegetation recovery
INDEX KEYWORDS: Debris; Image reconstruction; Recovery; Remote sensing; Rivers; Slope stability; Vegetation; Watersheds; 2008 wenchuan earthquakes; Connectivity indices; Coupling relationships; Hydrological changes; Hydrological connectivity; Probabilistic approaches; Remote sensing images; Vegetation recovery; Earthquakes
REFERENCES: Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Qi, Shengwen, Spatial distribution analysis of landslides triggered by 2008.5.12 Wenchuan Earthquake, China, Engineering Geology, 116, 1-2, pp. 95-108, (2010); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Tang, Chuan, Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China, Engineering Geology, 122, 1-2, pp. 22-33, (2011); 
Zhang, Shuai, Characteristics of earthquake- and rain-induced landslides near the epicenter of Wenchuan earthquake, Engineering Geology, 175, pp. 58-73, (2014); 
Wu, Zhenhan, Effects from the Wenchuan Earthquake and seismic hazard in the Longmenshan Mountains at the eastern margin of the Tibetan Plateau, Engineering Geology, 143-144, pp. 28-36, (2012); 
Liu, Guoxiang, Surface deformation associated with the 2008 Ms8.0 Wenchuan earthquake from ALOS L-band SAR interferometry, International Journal of Applied Earth Observation and Geoinformation, 12, 6, pp. 496-505, (2010)
PUBLISHER: MDPI AG membranes@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhang, S., Zhang, L.M.
AUTHOR FULL NAMES: Zhang, Shuai (55092670700); Zhang, Limin Min (58883008100)
55092670700; 58883008100
Assessment of human risks posed by deadly debris flow in the wenchuan earthquake area
(2015) International Journal of GEOMATE, 8 (1), pp. 1207 - 1211, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930245031&partnerID=40&md5=a69efb407a2979b7047c728c8857a87f

AFFILIATIONS: Department of Civil & Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong
ABSTRACT: Prolonged rainstorms had triggered several large-scale debris flows along Provincial Road 303 near the epicenter of the 2008 Wenchuan earthquake. A lot of concrete-aggregate plants distributed along this road were buried by the runout debris, leading to a large number of fatalities. A Quantitative Risk Assessment (QRA) methodology is being developed for debris flows induced by various rainfall scenarios. QRA for these debris flow hazards is of significance to determine the probability distribution, consequence and human risk profile arising from these disasters. With the aid of Geographic Information System (GIS) platform, a potential channelized debris flow catchment in the study area is identified based on remote sensing images and field study. Rainfall intensity-duration thresholds for the local channelized debris flows are used to determine the occurrence probability under six rainfall scenarios for the purpose of hazard analysis. Subsequently, human losses of debris flow are assessed by considering the variations of rainfall events, and the final human risks can be obtained using a general risk model. Finally, the societal human risks are obtained, which provide a benchmark for studying the long-term human risks of these potential debris flows and engineering decision in the perspective of mining manufacture. © 2015, International Journal of GEOMATE.
AUTHOR KEYWORDS: Debris flow; Human risk; Quantitative assessment
REFERENCES: Chen, Hongxin, Mechanisms and runout characteristics of the rainfall-triggered debris flow in Xiaojiagou in Sichuan Province, China, Natural Hazards, 62, 3, pp. 1037-1057, (2012); 
Finlay, P. J., Landslide risk assessment: Prediction of travel distance, Canadian Geotechnical Journal, 36, 3, pp. 556-562, (1999); 
Landslides and Boulder Falls from Natural Terrain Interim Risk Guidelines, (1998); 
Debris Flow Hazards and Related Phenomena, (2005); 
China Debris Flow Studies, (2004); 
Journal of Natural Disaster Science, (1981); 
Tang, Chuan, Landslide hazard assessment of the 2008 wenchuan earthquake: A case study in Beichuan area, Canadian Geotechnical Journal, 48, 1, pp. 128-145, (2011); 
Landslide Risk Assessment, (1997); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Zhang, Shuai, Assessment of risks of loose landslide deposits formed by the 2008 Wenchuan earthquake, Natural Hazards and Earth System Sciences, 12, 5, pp. 1381-1392, (2012)
PUBLISHER: GEOMATE International Society geomate@gi-j.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, H., Chi, T., Fan, J., Hu, K., Peng, L.
AUTHOR FULL NAMES: Zhang, Huaizhen (56201160600); Chi, Titanhe (7005693588); Fan, Jianrong (8727506000); Hu, Kaiheng (55648903800); Peng, Ling (56506111400)
56201160600; 7005693588; 8727506000; 55648903800; 56506111400
Spatial analysis of Wenchuan Earthquake-damaged vegetation in the mountainous basins and its applications
(2015) Remote Sensing, 7 (5), pp. 5785 - 5804, Cited 20 times.
DOI: 10.3390/rs70505785
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930024722&doi=10.3390%2Frs70505785&partnerID=40&md5=c6ca26742999d1e1dbabc9e09cc24f0d

AFFILIATIONS: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The 2008 Wenchuan Earthquake induced landslides that destroyed large swaths of mountain vegetation. Presently, the damaged vegetation areas are exhibiting various stages of recovery depending on environments. A spatial analysis of earthquake-damaged and recovered vegetation can provide useful information for understanding landslide processes. The mountainous watersheds of the Minjiang River Upstream, near Yinxiu Town (one of the highest seismic intensity zones during the Wenchuan earthquake) were selected. A DSAL (digital elevation model (DEM), slope, aspect and lithology) spatial zonation method was established to detect natural features of the vegetation survival environments, and damaged and recovered vegetation areas were extracted using the normalized difference vegetation index (NDVI) changes form multi-temporal (2001-2014) Landsat Thematic Mapper/Enhanced Thematic Mapper/Operational Land Imager (TM/ETM/OLI) images. Statistical results show that the vegetation growth was mainly controlled by its survival environments, and vegetation has coupling relations with slope stability. Then, the slope stability model was developed through multivariate analysis of earthquake-damaged vegetation and its controlling factors (i.e., topographic environments and material properties). Application to the Mianyuan River and Subao River basins validated the proposed model, showing that monitoring the vegetation (using the remote sensing images) can be used to assess the slope stability, and model results show what vegetative conditions with its survival environments are susceptible to landslide processes, although the predicted values may be higher than the actual values in the most mountainous basins. Our modeling approach may also be valuable for use in other regions prone to landslide hazards. © 2015 by the authors.
AUTHOR KEYWORDS: Landslides; Remote sensing; Vegetation; Wenchuan earthquake
INDEX KEYWORDS: Image processing; Image reconstruction; Landslides; Lithology; Multivariant analysis; Recovery; Remote sensing; Rivers; Slope protection; Slope stability; Spatial variables measurement; Surveying; Vegetation; Watersheds; 2008 wenchuan earthquakes; Digital elevation model; Landsat Thematic Mapper; Multi variate analysis; Normalized difference vegetation index; Remote sensing images; Survival environment; Wenchuan Earthquake; Earthquakes
REFERENCES: Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Xu, Chong, Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis, Landslides, 11, 3, pp. 441-461, (2014); 
Qi, Shengwen, Spatial distribution analysis of landslides triggered by 2008.5.12 Wenchuan Earthquake, China, Engineering Geology, 116, 1-2, pp. 95-108, (2010); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Xu, Chong, Preparation of earthquake-triggered landslide inventory maps using remote sensing and GIS technologies: Principles and case studies, Geoscience Frontiers, 6, 6, pp. 825-836, (2015); 
Xu, Chong, GIS-based support vector machine modeling of earthquake-triggered landslide susceptibility in the Jianjiang River watershed, China, Geomorphology, 145-146, pp. 70-80, (2012); 
Xu, Chong, Application of an incomplete landslide inventory, logistic regression model and its validation for landslide susceptibility mapping related to the May 12, 2008 Wenchuan earthquake of China, Natural Hazards, 68, 2, pp. 883-900, (2013); 
Xu, Chong, GIS-based bivariate statistical modelling for earthquake-triggered landslides susceptibility mapping related to the 2008 Wenchuan earthquake, China, Quarterly Journal of Engineering Geology and Hydrogeology, 46, 2, pp. 221-236, (2013); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012)
PUBLISHER: MDPI AG membranes@mdpi.com Postfach Basel CH-4005
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Shan, B., Xiong, X., Wang, R., Zheng, Y., Yadav, R.B.S.
AUTHOR FULL NAMES: Shan, Bin (25230808700); Xiong, Xiong (55664693000); Wang, Rongjiang (55621275200); Zheng, Yong (55758359400); Yadav, R. B.S. (25925605300)
25230808700; 55664693000; 55621275200; 55758359400; 25925605300
Stress evolution and seismic hazard on the Maqin-Maqu segment of East Kunlun Fault zone from co-, post-and interseismic stress changes
(2015) Geophysical Journal International, 200 (1), pp. 244 - 253, Cited 53 times.
DOI: 10.1093/gji/ggu395
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928606279&doi=10.1093%2Fgji%2Fggu395&partnerID=40&md5=cf330f753883d7303042e43397829777

AFFILIATIONS: State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology,CAS, Wuhan, Hubei, China; Macquarie University, Sydney, NSW, Australia; GFZ Helmholtz Centre for Geosciences, Potsdam, Germany; Department of Geophysics, Kurukshetra University, Kurukshetra, HR, India
ABSTRACT: The East Kunlun Fault zone, striking E-W to WNW-ESE, has been recognized as one of the largest and most active left-lateral strike-slip faults in the China continent. Presently, the Maqin-Maqu segment (MMS) is recognized as a seismic gap on the East Kunlun Fault. Since several highly populated counties are close to this region, understanding stress transfer and accumulation along this segment is important for hazard assessment along the MMS. In this study, we calculated the stress evolution along the MMS of the East Kunlun Fault zone during 1879-2008 by integrating coseismic effects, viscoelastic relaxation and tectonic loading. It is observed that the stress accumulation on the western part of the Maqin segment has been effected by the 1937 Tuosuo Lake earthquake, the stress on the eastern part of the Maqin segment. Also, the western part of the Maqu segment was relaxed by the 1947 Dari earthquake, and the stress loading on the eastern part of Maqu segment was increased by both the 1879 Wudu and 2008 Wenchuan earthquakes. It is observed that, compared to coseismic static stress changes, the post-seismic viscoelastic relaxation process has played a more important role on stress accumulation in the Maqu segment. The increased stress on the Maqin and Maqu segment is consistent with tectonic loading over 160 and 250 yr, respectively, which we expect will lead to future earthquakes and associated seismic hazard on these segments. © The Authors 2014. Published by Oxford University Press on behalf of the Royal Astronomical Society.
AUTHOR KEYWORDS: Early warning; Earthquake dynamics; Earthquake interaction; Forecasting; Prediction
INDEX KEYWORDS: Forecasting; Hazards; Seismic response; Strike-slip faults; Viscoelasticity; 2008 wenchuan earthquakes; China continents; Early warning; Earthquake dynamics; Hazard Assessment; Stress accumulation; Tectonic loading; Viscoelastic relaxation; Earthquakes; coseismic process; early warning system; earthquake; earthquake event; earthquake prediction; fault zone; forecasting method; seismic hazard; stress; strike-slip fault; tectonic evolution; China; Gansu; Maqin; Maqu; Qinghai
REFERENCES: Deng, Jishu, Triggering of 1812 Santa Barbara earthquake by a great San Andreas shock: Implications for future seismic hazards in southern California, Geophysical Research Letters, 23, 10, pp. 1155-1158, (1996); 
Le Dain, Anne Yvonne, Active faulting and tectonics of Burma and surrounding regions., Journal of Geophysical Research, 89, B1, pp. 453-472, (1984); 
Diao, Faqi, Mechanisms of transient postseismic deformation following the 2001 Mw 7.8 Kunlun (China) earthquake, Pure and Applied Geophysics, 168, 5, pp. 767-779, (2011); 
Freed, Andrew M., Earthquake triggering by static, dynamic, and postseismic stress transfer, Annual Review of Earth and Planetary Sciences, 33, pp. 335-367, (2005); 
Freed, Andrew M., Evolution of stress in Southern California for the past 200 years from coseismic, postseismic and interseismic stress changes, Geophysical Journal International, 169, 3, pp. 1164-1179, (2007); 
Guo, Jianming, Surface ruptures associated with the 1937 M 7.5 Tuosuo Lake and the 1963 M 7.0 Alake Lake earthquake and the paleoseismicity along the Tuosuo Lake segment of the Kunlun fault, Northern Tibet, Bulletin of the Seismological Society of America, 97, 2, pp. 474-496, (2007); 
Harris, Ruth A., Influence of static stress changes on earthquake locations in southern California, Nature, 375, 6528, pp. 221-224, (1995); 
Heidbach, Oliver, Stress evolution and seismic hazard of the Dead Sea Fault System, Earth and Planetary Science Letters, 257, 1-2, pp. 299-312, (2007); 
Hodgkinson, Kathleen M., The 1954 Rainbow Mountain-Fairview Peak-Dixie Valley earthquakes: A triggered normal faulting sequence, Journal of Geophysical Research: Solid Earth, 101, B11, pp. 25459-25471, (1996); 
Earthquake Research in China, (2005)
PUBLISHER: Oxford University Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Dong, C., Luo, M., Chang, X., Zhang, B., Shu, C.
AUTHOR FULL NAMES: Dong, Chengyan (56369926500); Luo, Mingliang (35113352700); Chang, Xiaoli (56531321900); Zhang, Bin (55605769056); Shu, Chengqiang (35194728600)
56369926500; 35113352700; 56531321900; 55605769056; 35194728600
Spatial location behavior of aftershocks of Wenchuan MS8.0 and Lushan MS7.0 earthquakes
(2015) Acta Seismologica Sinica, 37 (1), pp. 113 - 124, Cited 7 times.
DOI: 10.11939/jass.2015.01.010
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923829727&doi=10.11939%2Fjass.2015.01.010&partnerID=40&md5=ee03aa5202fac622c92da53b54d7c6d5

AFFILIATIONS: Land and Resources College, China West Normal University, Nanchong, Sichuan, China
ABSTRACT: With the method of GIS, this paper analyzes the point pattern of aftershocks of Wenchuan and Lushan earthquakes, from the perspective about the uncertainty of aftershock distribution and the relationship between seismic intensity region and spatial distance pattern. The result shows that in a smaller scale, the aftershocks are approximately in the random distribution and correlation effect is obvious; while the aftershocks present aggregated distribution in larger scale, but the spatial correlation characteristics are still in power-law relationship, and the upper and lower limits of scale-free area are associated with the major and minor axes of the different intensity seismic region. Wenchuan and Lushan aftershocks form a hot and sub-hot spot regions, which is like a NE-SW rectangular, the nearest neighbor index for this two regions are 0.99 and 0.76. The nearest neighbor index of Yingxiu XI degree and Lushan IX degree was 1.02, 0.95, indicating that the aftershocks tend to distribute randomly in the region with strong intensity and high aggregation. The distance-associated features of the aftershocks indicate that, the aftershocks of Wenchuan earthquake in the intervals of 13.5-20 km, 30-43 km and the aftershocks of Lushan earthquake in the interval of 7-14.5 km are correlated significantly; the aftershocks of Wenchuan earthquake in the intervals of 66-82 km, 225-236 km and 317-321.5 km and the aftershocks of Lushan earthquake in the intervals of 15.5-22 km, 23-32.5 km and 33.5-43.5 km are also have power-law relation, which is coincident with the major and minor axes of Wenchuan earthquake XI-IX degree and Lushan earthquake IX-VII degree regions, also the 321.5 km and 40 km are consistent with the fracture plane of the two earthquakes. Comparison with the kernel density estimation and the seismic intensity map shows that the consistency between kernel density area and high intensity regions increases with the search radius decreasing; with the expansion of the search radius, the discrepancy between kernel density area and seismic intensity region is more greater. ©, 2015, Acta Seismologica Sinica Press. All right reserved.
AUTHOR KEYWORDS: Aftershock sequence; Lushan earthquake; Spatial correlation dimension; Spatial distribution; The nearest neighbor index; Wenchuan earthquake
INDEX KEYWORDS: aftershock; earthquake intensity; GIS; Lushan earthquake 2013; power law distribution; Sichuan earthquake 2008; spatial analysis
REFERENCES: Scientia Sinica Terrae, (2013); 
Scientia Geographica Sinica, (2013); 
Fang, Lihua, Relocation of the mainshock and aftershock sequences of MS7.0 Sichuan Lushan earthquake, Chinese Science Bulletin, 58, 28-29, pp. 3451-3459, (2013); 
Acta Seismologica Sinica, (1993); 
Acta Ecologica Sinica, (2003); 
Liu, Chengli, Rupture process of the Ms7.0 Lushan earthquake, 2013, Science China Earth Sciences, 56, 7, pp. 1187-1192, (2013); 
Lü, Zhiqiang, Spatial pattern gradient analysis of a transect in a hilly urban area in China from the perspective of transportation corridor sprawl, Shengtai Xuebao, 34, 9, pp. 2442-2449, (2014); 
Shi, Peijian, Spatio-temporal clustering of aftershocks of the 2008 wenchuan earthquake, Acta Seismologica Sinica, 31, 5, pp. 506-515, (2009); 
Advances in Earth Science, (1997); 
Wang, Yanru, Spatiotemporal distribution characteristics of casualties in great ″5 · 12″Wenchuan earthquake, Journal of Natural Disasters, 18, 6, pp. 52-56, (2009)
PUBLISHER: Acta Seismologica Sinica Press dzxb79@126.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ran, Q.-H., Qian, Q., Li, W., Fu, X.-D., Yu, X., Xu, Y.-P.
AUTHOR FULL NAMES: Ran, Qihua (24721669700); Qian, Qun (49861924200); Li, Wei (56004235400); Fu, Xudong (7402205186); Yu, Xiao (56454554800); Xu, Yueping (23111648500)
24721669700; 49861924200; 56004235400; 7402205186; 56454554800; 23111648500
Impact of earthquake-induced-landslides on hydrologic response of a steep mountainous catchment: a case study of the Wenchuan earthquake zone
(2015) Journal of Zhejiang University: Science A, 16 (2), pp. 131 - 142, Cited 14 times.
DOI: 10.1631/jzus.A1400039
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922757831&doi=10.1631%2Fjzus.A1400039&partnerID=40&md5=d0cf94a8b6efff69e1cc11f12f868b85

AFFILIATIONS: Institute of Hydrology and Water Resources, Zhejiang University, Hangzhou, Zhejiang, China; Tsinghua University, Beijing, China; China Three Gorges Corporation, Yichang, Hubei Province, Yunnan, China
ABSTRACT: Earthquake-induced-landslides will change the underlying surface conditions (topography, vegetation cover rate, etc.), which consequently may influence the hydrologic response and then change the flash flood risk. The Jianpinggou catchment, located in the Wenchuan earthquake (occurred in Sichuan, China, 2008) affected area, is selected as the study area. The distribution of the landslides is obtained from the remote sensing image data. The changes of topography are obtained from the comparisons among digital elevation models (DEMs) during different periods. A physical-based model, the integrated hydrology model (InHM), is used to simulate the hydrologic response before and after the landslide. The influence of the underlying surface conditions is then discussed based on the simulation results. The results reveal that landslides cause significant effects on the hydrologic response, and the impact is proportional to the proportion of surface flow in the total runoff. The effect of landslides on the runoff is insignificant at the outlet, but obvious in the local area. The larger the rainfall, the more visible the impact, and the impact of landslides will increase rapidly at the threshold of the runoff (the total rainfall of 235 mm in 6 h in the study area), but there is a limit with the further enlarged rainfall. The improved understanding of the impact of landslides on the hydrologic response provides valuable theoretical support for storm flood forecasting. © 2015, Zhejiang University and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Earthquake; Hydrologic response; Landslide; Numerical simulation; Underlying surface conditions
INDEX KEYWORDS: Catchments; Computer simulation; Earthquakes; Flood control; Image reconstruction; Landslides; Rain; Remote sensing; Runoff; Surface topography; Weather forecasting; Digital elevation model; Earthquake-induced landslides; Hydrologic response; Integrated hydrology models; Physical based modeling; Remote sensing images; Underlying surface; Wenchuan Earthquake; Floods
REFERENCES: Bari, Mohammed Abdul, Understanding changes in annual runoff following land use changes: A systematic data-based approach, Hydrological Processes, 19, 13, pp. 2463-2479, (2005); 
BeVille, Susan H., Using simulated hydrologic response to revisit the 1973 Lerida Court landslide, Environmental Earth Sciences, 61, 6, pp. 1249-1257, (2010); 
Campana, Néstor A., Predicting floods from urban development scenarios: Case study of the Dilúvio Basin, Porto Alegre, Brazil, Urban Water, 3, 1-2, pp. 113-124, (2001); 
Chen, Jinnchyi, Variability of impact of earthquake on debris-flow triggering conditions: Case study of Chen-Yu-Lan watershed, Taiwan, Environmental Earth Sciences, 64, 7, pp. 1787-1794, (2011); 
Soil and Water Conservation in China, (2011); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Formation Mechanisms and Risk Assessment of Geological Hazards Trig Gered by the Wenchuan Earthquake, (2011); 
Dunne, Thomas, Effects of Rainfall, Vegetation, and Microtopography on Infiltration and Runoff, Water Resources Research, 27, 9, pp. 2271-2285, (1991); 
Ebel, Brian A., Physics-based continuous simulation of long-term near-surface hydrologic response for the Coos Bay experimental catchment, Water Resources Research, 44, 7, (2008); 
Ebel, Brian A., The impacts of hysteresis on variably saturated hydrologic response and slope failure, Environmental Earth Sciences, 61, 6, pp. 1215-1225, (2010)
PUBLISHER: Zhejiang University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Ge, Y., Cui, P., Zhang, J.-Q., Zeng, C., Su, F.-H.
AUTHOR FULL NAMES: Ge, Yonggang (26039083000); Cui, Peng (56706923500); Zhang, Jianqiang (35212366900); Zeng, Chao (56497480400); Su, Fenghuan (14033176000)
26039083000; 56706923500; 35212366900; 56497480400; 14033176000
Catastrophic debris flows on July 10th 2013 along the Min River in areas seriously-hit by the Wenchuan earthquake
(2015) Journal of Mountain Science, 12 (1), pp. 186 - 206, Cited 54 times.
DOI: 10.1007/s11629-014-3100-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921929563&doi=10.1007%2Fs11629-014-3100-7&partnerID=40&md5=403e7e34401798514668e4b01c585738

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; CAS Center for Excellence & Innovation in Tibetan Plateau Earth System Sciences, Shantou, Beijing, China; Sichuan Engineering Research Center for Emergency Mapping & Disaster Reduction/Sichuan Geomatics Center, Chengdu, China
ABSTRACT: Over 240 debris flows occurred in hill-slopes, gullies ( indicated those with single-channel) and watersheds (indicated those with tributaries and channels) on July 10th 2013 in the Wenchuan county, and caused 29 casualties and about 633×106 USD losses. This work aimed to analyze characteristics, hazards and causes of these events and explore mitigating measures based on field investigation and remote sensing images interpretation. The debris flows contained clay content of 0.1%∼3.56%, having densities of 1.72∼2.14 t/m3, velocities of 5.0∼12.7 m/s, discharges of 335∼2353 m3/s and sediment yields of 0.10∼1.26×106 m3, and also numerously occurred in large watersheds with the area over 10 km2. Large debris flows formed 3 hazard-chains in slopes, gullies, watersheds and rivers, which all evolved in dammed lakes and outburst flood, and 26 dammed lakes and 10 newly ones were generated along the rivers of Min and Yuzi. The remarkable spatial difference of loose solid materials accumulation and intense rainfall, with the cumulative of about or more than 150 mm and the hourly of over 16mm, caused debris flows in the sections from Yingxiu to Miansi and Gengda. The damages on buildings, reconstructions, highways, factories and hydro power station originated from the impacting, scouring, burying of debris flows, the submerging of dammed lake and the scouring of outburst flood, and the huge losses came from the ruinous destructions of control engineering works of debris flows as well as the irrational location and low-resistant capabilities of reconstructions. For hazards mitigating of debris flows in long term, the feasible measures for short term, including risk-reassessing of foregone and potential hazard sites, regional alarming system establishing and integrated control in disastrous sites, and middle-long term, including improving reconstruction standard, rationally disposing river channel bed rise and selecting appropriate reconstruction time and plans, were strongly suggested. © 2015, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Causes; Characteristics; Damages; Debris flows; Preventions; Wenchuan Earthquake
INDEX KEYWORDS: catastrophic event; damage mechanics; debris flow; discharge; earthquake magnitude; flooding; gully; hazard assessment; hillslope; mitigation; reconstruction; remote sensing; risk assessment; Sichuan earthquake 2008; watershed; China; Sichuan; Yingxiu
REFERENCES: Chen, Jinnchyi, Characteristics of rainfall triggering of debris flows in the Chenyulan watershed, Taiwan, Natural Hazards and Earth System Sciences, 13, 4, pp. 1015-1023, (2013); 
Chen, Jinnchyi, Recent changes in the number of rainfall events related to debris-flow occurrence in the Chenyulan Stream Watershed, Taiwan, Natural Hazards and Earth System Sciences, 12, 5, pp. 1539-1549, (2012); 
Chen, Suchin Chien, Debris flow disaster prevention and mitigation of non-structural strategies in Taiwan, Journal of Mountain Science, 11, 2, pp. 308-322, (2014); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Chen, Xingzhang, Post-earthquake changes and prediction of debris flow scales in Subao River Valley, Beichuan County, Sichuan Province, China, Environmental Earth Sciences, 65, 4, pp. 995-1003, (2012); 
Chiou, Shianjin, Evaluating landslides and sediment yields induced by the chi-chi earthquake and followed heavy rainfalls along the ta-chia river, Journal of GeoEngineering, 2, 2, pp. 73-83, (2007); 
Cui, Peng, Risk assessment of highways affected by debris flows in Wenchuan earthquake area, Journal of Mountain Science, 10, 2, pp. 173-189, (2013); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Formation Mechanism and Risk Control in Wenchuan Earthquake of Mountain Disaster, (2011); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Peng, C.Y., Yang, J.S., Zheng, Y., Jiang, X.D., Xu, Z.Q., Gao, Y.
AUTHOR FULL NAMES: Peng, Chaoyong (22958100200); Yang, Jiansi (14009005600); Zheng, Yu (55921905900); Jiang, Xudong (55511748320); Xu, Zhiqiang (55687377200); Gao, Yu (56122868500)
22958100200; 14009005600; 55921905900; 55511748320; 55687377200; 56122868500
A τc magnitude estimation of the 20 April 2013 Lushan earthquake, Sichuan, China
(2014) Science China Earth Sciences, 57 (12), pp. 3118 - 3124, Cited 9 times.
DOI: 10.1007/s11430-014-4971-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84916208789&doi=10.1007%2Fs11430-014-4971-8&partnerID=40&md5=1e1f309e92f79c0a80c4b39fe806d2a3

AFFILIATIONS: China Earthquake Administration, Beijing, China
ABSTRACT: A crucial part of proposed earthquake early warning systems is a rapid estimate for earthquake magnitude. Most of these methods are focused on the first part of the P-wave train, the earlier and less destructive part of the ground motion that follows an earthquake. A method has been proposed by using the period of the P-wave to determine the magnitude of a large earthquake at local distance, and a specific relation for the Sichuan region was calibrated according to acceleration records of Wenchuan earthquake. The M<inf>w</inf> 6.6 earthquake hit Lushan County, Sichuan, on April 20, 2013 and the largest aftershocks provide a useful dataset to validate the proposed relation and discuss the risks connected to the extrapolation of magnitude relations with a poor dataset of large earthquake waveforms. A discrepancy between the local magnitude (M<inf>L</inf>) estimated by means of τ<inf>c</inf> evaluation and the standard M<inf>L</inf> (6.4 vs. 7.0) suggests using caution when M<inf>L</inf> vs. τ<inf>c</inf> calibrations do not include a relevant dataset of large earthquakes. Effects from large residuals could be mitigated or removed by introducing selection rules on τ<inf>c</inf> function, by regionalizing the M<inf>L</inf> vs. τ<inf>c</inf> function in the presence of significant tectonic or geological heterogeneity, and by using probabilistic and evolutionary methods. © 2014, Science China Press and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: earthquake early warning systems; Lushan earthquake; magnitude; τc method
INDEX KEYWORDS: Earthquake effects; Seismic waves; C method; Earthquake early warning systems; Earthquake magnitudes; Evolutionary method; Geological heterogeneities; magnitude; Magnitude estimation; Wenchuan Earthquake; Large dataset; aftershock; early warning system; earthquake magnitude; earthquake prediction; ground motion; P-wave; China; Lushan [Sichuan]; Sichuan
REFERENCES: Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Carranza, Marta, Earthquake early warning for southern Iberia: A P wave threshold-based approach, Geophysical Research Letters, 40, 17, pp. 4588-4593, (2013); 
Colombelli, Simona, Early magnitude and potential damage zone estimates for the great Mw 9 Tohoku-Oki earthquake, Geophysical Research Letters, 39, 22, (2012); 
Deng, Qidong, Basic characteristics of active tectonics of China, Science in China, Series D: Earth Sciences, 46, 4, pp. 356-372, (2003); 
Espinosa-Aranda, J. Manuel, Evolution of the mexican seismic alert system (SASMEX), Seismological Research Letters, 80, 5, pp. 694-706, (2009); 
Fang, Lihua, Relocation of the mainshock and aftershock sequences of MS7.0 Sichuan Lushan earthquake, Chinese Science Bulletin, 58, 28-29, pp. 3451-3459, (2013); 
Festa, Gaetano, Earthquake magnitude estimation from early radiated energy, Geophysical Research Letters, 35, 22, (2008); 
Hoshiba, Mitsuyuki, Earthquake early warning starts nationwide in Japan, Eos, 89, 8, pp. 73-74, (2008); 
Liu, Jie, Introduction to the Lushan, Sichuan M7.0 earthquake on 20 April 2013, Acta Geophysica Sinica, 56, 4, pp. 1404-1407, (2013)
PUBLISHER: Science Press (China)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shuai, X.-H., Hu, S.-P., Zheng, X.-X.
AUTHOR FULL NAMES: Shuai, Xianghua (7003661314); Hu, Suping (55890956600); Zheng, Xiangxiang (57217103837)
7003661314; 55890956600; 57217103837
A rapid assessment of the felt range of Wenchuan earthquake based on internet information
(2014) Dizhen Dizhi, 36 (4), pp. 1094 - 1105, Cited 2 times.
DOI: 10.3969/j.issn.0253-4967.2014.04.013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921688763&doi=10.3969%2Fj.issn.0253-4967.2014.04.013&partnerID=40&md5=be485466b79d408ff5892068640e6699

AFFILIATIONS: China Earthquake Networks Center, Beijing, China; Institute of Earthquake Science, China Earthquake Administration, Beijing, China; China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing, Beijing, China
ABSTRACT: Based on the felt information from the Internet after the earthquake, this paper studied the methods of earthquake damage information acquisition and analysis. We carried out the research based on 4515 pieces of felt information after the Wenchuan earthquake acquired from the Internet. After the analysis on the publishing time, location and intensity of the feeling of the earthquake in the felt information, we found that the release of felt information was concentrated within the 3 hours after the Wenchuan earthquake happened. And we initially identified 2 289 felt data released in the subsequent three hours after Wenchuan earthquake, which distributed in 199 areas, as the data sources for spatial interpolation. In order to do spatial interpolation for these datasets, we classified the datasets into three categories, which are "unawareness", "felt" and "strongly felt", and assigned the value of 0, 1 and 2 to "unawareness", "felt" and "strongly felt" respectively. Before doing the spatial interpolation for the datasets, we preprocessed the datasets distributed in 193 different areas to remove the redundant and abnormal value data and to finally extract 193 felt data distributed in different areas. At the same time, this paper did exploratory analysis for the datasets, by which we knew the law of the datasets and determined the parameters and model for the spatial interpolation. After a series of analysis, this paper adopted IDW, RBF and Kriging methods to interpolate the felt datasets, and get the results of the felt range of Wenchuan earthquake. Then, the paper compared the results from different spatial interpolation ways by interpolation accuracy and the goodness of fit with the actual earthquake disaster. After the comparison, we found that the result of Kriging method, with a certain interpolation model and parameters, was consistent with actual disaster distribution of the Wenchuan earthquake to a certain extent, especially for the fitting with the strongly felt area (VI degrees). This study provides an effective way for us to know quickly the earthquake felt range and correct for the disaster information of the earthquake. And it will play an important role in making scientific and rational decisions during the earthquake emergency. ©, 2014, State Seismology Administration. All right reserved.
AUTHOR KEYWORDS: Disaster acquisition; Earthquake emergency; Earthquake felt area; GIS; Internet; Spatial interpolation; Wenchuan earthquake
INDEX KEYWORDS: Disasters; Felt; Felts; Geographic information systems; Internet; Interpolation; Disaster distributions; Disaster Information; Earthquake damages; Earthquake disaster; Exploratory analysis; Internet information; Spatial interpolation; Wenchuan Earthquake; Earthquakes; assessment method; data set; decision making; GIS; hazard assessment; kriging; numerical model; Sichuan earthquake 2008; spatial analysis; China; Sichuan
REFERENCES: Esri Arcgis Desktop Help, (1989); 
Journal of Ecology and Rural Environment, (2011); 
Introduction to Geostatistics, (2012); 
Shuai, Xianghua, Analysis and simulation of spatial distribution of disaster based on disaster reports from discrete dots at earthquake site, Dizhen Dizhi, 31, 2, pp. 321-333, (2009); 
Shuai, Xianghua, Internet media-based acquisition and processing model of earthquake disaster situation, Journal of Natural Disasters, 22, 3, pp. 178-184, (2013); 
Arcgis Experimental Course for Spatial Analysis, (2006); 
Software Guide, (2008); 
Science of Surveying and Mapping, (2011); 
Theory and Application of Spatial Variability, (2005); 
undefined, (2012)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, X., Tang, C.
AUTHOR FULL NAMES: Huang, Xun (57206189172); Tang, Chuan (35932953300)
57206189172; 35932953300
Formation and activation of catastrophic debris flows in Baishui River basin, Sichuan Province, China
(2014) Landslides, 11 (6), pp. 955 - 967, Cited 29 times.
DOI: 10.1007/s10346-014-0465-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911808448&doi=10.1007%2Fs10346-014-0465-1&partnerID=40&md5=ceda2c5d8c7d8e4ec075e3a1ef01b344

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: During the five rainy seasons following the 2008 Wenchuan earthquake, at least eight catastrophic events of multiple debris flows occurred in the Yinchanggou area of Baishui River basin, in southwestern China. The deposits had some serious impacts on the transportation, communication, and reconstruction activities. It indicates the start of a period with a high-frequency debris flow activities. In this paper, a detailed review is made of the latest 12 debris flow events, which occurred on 18th August 2012. Field reconnaissance and measurements, supported by a remote sensing interpretation, were conducted to reveal the locations and morphological characteristics of debris flow catchments. A total volume of 50.26 million m3 co-seismic landslides, triggered by the Wenchuan earthquake, served as source materials for these debris flows and/or shallow landslides. Bedrocks, which were on the hanging wall of the Yingxiu-Beichuan Fault with a mean slope gradient larger than 30°, were the most susceptible for these seism-triggered failures. The volume of debris flow deposits on individual fans vary by many orders of magnitude from 2,900 to 223,500 m3. The huge amount of reserves of source material compared to debris flow volumes currently deposited and taking into account the relatively low morphology index values form an indication of the early stage in the development of debris flows and the immense potential for debris flow occurrence in the future. There are two patterns of debris flow initiation which can be distinguished in this study: (a) the channel initiation pattern of concentrated overland flow erosion in the channel beds and (b) the slope initiation pattern which shows the development of new landslides and a transition into debris flows during a heavy rainfall. A catastrophic debris flow in the Haihuiqiao watershed of the Yinchanggou area was selected to show in detail the mechanism of debris flow initiation as a result of intensive erosion in loose debris materials. The critical rainfall threshold in terms of daily precipitation decreased by 77 % compared to the pre-earthquake threshold. A primary rainfall intensity–duration (ID) threshold curve was constructed for debris flows for an early-warning system and compared with other global rainfall thresholds. The discussion is focused on the initiation mechanisms of debris flows and the assessment of the critical meteorological threshold. © 2014, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Activity characteristics; Debris flows; Initiation process; Triggering rainfall; Wenchuan earthquake; Yinchanggou area
INDEX KEYWORDS: Catchments; Deposits; Earthquakes; Erosion; Landslides; Rain; Remote sensing; Watersheds; 2008 wenchuan earthquakes; Critical rainfall thresholds; Debris flows; Initiation process; Morphological characteristic; Remote sensing interpretation; Wenchuan Earthquake; Yinchanggou area; Debris; bedrock; catastrophic event; debris flow; early warning system; formation mechanism; geomorphology; landslide; overland flow; remote sensing; Baishui Basin; China; Sichuan
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Buffington, John M., A systematic analysis of eight decades of incipient motion studies, with special reference to gravel-bedded rivers, Water Resources Research, 33, 8, pp. 1993-2029, (1997); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Campbell, Kenneth W., Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra, Seismological Research Letters, 68, 1, pp. 154-179, (1997); 
Debris Flow Hazards and Related Phenomena, (2005); 
Chen, Chienyuan, Rainfall duration and debris-flow initiated studies for real-time monitoring, Environmental Geology, 47, 5, pp. 715-724, (2005); 
Chiou, Shianjin, Evaluating landslides and sediment yields induced by the chi-chi earthquake and followed heavy rainfalls along the ta-chia river, Journal of GeoEngineering, 2, 2, pp. 73-83, (2007); 
International Conference Prevention of Hydrogeological Hazards the Role of Scientific Research, (1996); 
Coe, Jeffrey A., Initiation conditions for debris flows generated by runoff at Chalk Cliffs, central Colorado, Geomorphology, 96, 3-4, pp. 270-297, (2008); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011)
PUBLISHER: Springer Verlag
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, R., Li, W.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Li, Weile (25936551300)
55835407700; 25936551300
Post-earthquake landsliding and long-term impacts in the Wenchuan earthquake area, China
(2014) Engineering Geology, 182 (PB), pp. 111 - 120, Cited 170 times.
DOI: 10.1016/j.enggeo.2014.07.008
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911443422&doi=10.1016%2Fj.enggeo.2014.07.008&partnerID=40&md5=073f14a024ece1690e698c0515e37e32

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake on May 12, 2008 triggered tens of thousands of landslides and produced large amounts of loose material. The loose material accumulated in gullies or on slopes provides abundant sources for the consequent debris flows, which will endanger resettled residents and destroy urban reconstruction. During the 5years following the Wenchuan earthquake event, heavy rainfalls have already induced a great number of debris flows in the earthquake-damaged area, resulting in serious casualties and property losses. The co-seismic landslides and the debris flows induced by rainfalls in the Mianyuan River basin are analyzed using multi-temporal remote sensing images. More than 2000 landslides were triggered and about 4.0×108m3 of loose material was generated in the Mianyuan River basin, and the volume of erodible material is 6.0×107-1.6×108m3. There were 1.27×107m3 of bed load sediments and 6.3×105m3 suspended load sediments transported into the river system in the past 5years. The active mass movements will last for a long period in the Mianyuan River basin. © 2014 Elsevier B.V.
AUTHOR KEYWORDS: Debris flow; Landslide activity; Long-term impact; Mianyuan river; Rainfall; Wenchuan earthquake
INDEX KEYWORDS: Debris; Image reconstruction; Landslides; Rain; Rivers; Sediment transport; Suspended sediments; Watersheds; Debris flows; Heavy rainfall; Long-term impacts; Loose materials; Multi-temporal remote sensing; Seismic landslides; Suspended loads; Wenchuan Earthquake; Earthquakes; debris flow; earthquake damage; earthquake trigger; gully; landslide; rainfall; Sichuan earthquake 2008; slope; suspended sediment; China; Sichuan; Wenchuan
REFERENCES: Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Hovius, Niels, Prolonged seismically induced erosion and the mass balance of a large earthquake, Earth and Planetary Science Letters, 304, 3-4, pp. 347-355, (2011); 
Journal of Engineering Geology, (2011); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Journal of Engineering Geology, (2009); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Proc of the 11th Iaeg Congress Auckland New Zealand, (2010); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Lin, Guan-Wei, Influence of typhoons and earthquakes on rainfall-induced landslides and suspended sediments discharge, Engineering Geology, 97, 1-2, pp. 32-41, (2008)
PUBLISHER: Elsevier
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, W., Wang, X., Dou, A.
AUTHOR FULL NAMES: Zhang, Wei (56402138400); Wang, Xiaoqing (35148757500); Dou, Aixia (55761756200)
56402138400; 35148757500; 55761756200
Study on the intelligent extraction of seismic damage based on the Mean-Shift segmentation
(2014) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6946789, pp. 1745 - 1748, Cited 0 times.
DOI: 10.1109/IGARSS.2014.6946789
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911384092&doi=10.1109%2FIGARSS.2014.6946789&partnerID=40&md5=d5ff896dbe1b6add2c7d45475d293b2d

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China
ABSTRACT: The limitations of parameter determination manually exist in the current object based image analysis (OBIA) of the commercial software, such as Definiens eCognition or ENVI FX, In this paper, an intelligent method based on Mean-Shift and support vector machines (SVM) algorithm of OBIA is proposed to extract the building damage caused by catastrophic earthquakes, which aims to improve the accuracy of classification and get the best bandwidth parameter of the Mean-Shift segmentation automatically by computing the Kappa index that has been used in a feedback loop. The improved method is applied to extract seismic damage information in a test area of the city of Dujiangyan after the 2008 Wenchuan earthquake by using post-earthquake aerial images acquired on May 18, 2008. The results of the experiments indicate that the improved OBIA is more effective and robust than traditional method of OBIA. © 2014 IEEE.
AUTHOR KEYWORDS: Kappa index; Mean-Shift; object based image analysis; seismic damage extraction; SVM
INDEX KEYWORDS: Antennas; Extraction; Image analysis; Image enhancement; Image segmentation; Remote sensing; Structural analysis; Support vector machines; 2008 wenchuan earthquakes; Accuracy of classifications; Kappa index; Mean shift; Object based image analysis; Object based image analysis (OBIA); Seismic damage; Support vector machines algorithms; Earthquakes
REFERENCES: Gusella, Luca, Object-oriented image understanding and post-earthquake damage assessment for the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S225-S238, (2005); 
Duan, Fuzhou, Collapsed houses automatic identification based on texture changes of post-earthquake aerial remote sensing image, (2010); 
Comaniciu, Dorin, Mean shift: A robust approach toward feature space analysis, IEEE Transactions on Pattern Analysis and Machine Intelligence, 24, 5, pp. 603-619, (2002); 
Cortes, Corinna, Support-Vector Networks, Machine Learning, 20, 3, pp. 273-297, (1995); 
Li, Peijun, Urban building damage detection from very high resolution imagery using OCSVM and spatial features, International Journal of Remote Sensing, 31, 13, pp. 3393-3409, (2010); 
Computational Linguistics, (1996); 
Comaniciu, Dorin, Robust analysis of feature spaces: Color image segmentation, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp. 750-755, (1997); 
Study on Mean Shift Segmentation and Application of Remotely Sensed Imagery, (2012); 
Congalton, Russell G., A review of assessing the accuracy of classifications of remotely sensed data, Remote Sensing of Environment, 37, 1, pp. 35-46, (1991); 
Lee, Craig A., Recent Developments in High Performance Computing for Remote Sensing: A Review, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 4, 3, pp. 508-527, (2011)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers Geoscience and Remote Sensing Society (IEEE GRSS)
CONFERENCE NAME: Joint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014
CONFERENCE DATE: 2014-07-13 through 2014-07-18
CONFERENCE LOCATION: Quebec City
CONFERENCE CODE: 109054
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, X., Dou, A., Ding, X., Yuan, X.
AUTHOR FULL NAMES: Wang, Xiaoqing (35148757500); Dou, Aixia (55761756200); Ding, Xiang (16635732900); Yuan, Xiaoxiang (53165258800)
35148757500; 55761756200; 16635732900; 53165258800
Study on RS and GIS based comprehensive analysis of multi-factors affecting the earthquake risk: An application of Monte Carlo simulation
(2014) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6947137, pp. 3117 - 3120, Cited 1 times.
DOI: 10.1109/IGARSS.2014.6947137
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911381593&doi=10.1109%2FIGARSS.2014.6947137&partnerID=40&md5=440a5c47c02d0a44a74181a02313b068

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China
ABSTRACT: The seismic risk, as the product of seismic hazard and vulnerability, is widely assessed based on the traditional inventory method with a detailed classified facilities and structures. The losses caused by historical earthquakes, show great variation in the same seismic intensity. Thus the study of uncertainty of building vulnerability is important to improve the accuracy of seismic risk assessment. Because of the complexity of the combined factors affecting the building vulnerability, it is hard to estimate the effects by using the simple models. The paper introduces Monte Carlo random testing method to simulate the seismic vulnerability and estimate its uncertainty in the case that complex affecting factors exist. By using the building damage data of 2008 Ms=8.0 Wenchuan earthquake in Sichuan, China, acquired through interpretation of post-earthquake RS images and field survey, the exemplary quantitative structural vulnerabilities are estimated. The results show that the vulnerability uncertainty with affecting factors can be accurately simulated. © 2014 IEEE.
AUTHOR KEYWORDS: Earthquake risk; influence; Monte Carlo simulation; multi-factors; RS and GIS; vulnerability
INDEX KEYWORDS: Geographic information systems; Intelligent systems; Monte Carlo methods; Remote sensing; Risk assessment; Seismic design; Testing; Uncertainty analysis; Earthquake risk; influence; Multi factors; RS and GIS; vulnerability; Earthquakes
REFERENCES: Report of the State Earthquake Investigation Commission, (1908); 
Earthquake Damage and Earthquake Insurance, (1932); 
Studies in Seismicity and Earthquake Damage Statistics, (1969); 
Huang Chongfu, Fuzzy similarity character method used to predict building damage, Earthquake Engineering and Engineering Vibration, 8, 3, pp. 57-68, (1988); 
Technology for Earthquake Disaster Prevention, (2008); 
Wang, Xiaoqing, Study on quantitative earthquake damage of Dujiangyan city, caused by 2008 MS=8.0 Wenchuan, China earthquake based on aerial imagery, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2743-2746, (2010)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: The Institute of Electrical and Electronics Engineers Geoscience and Remote Sensing Society (IEEE GRSS)
CONFERENCE NAME: Joint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014
CONFERENCE DATE: 2014-07-13 through 2014-07-18
CONFERENCE LOCATION: Quebec City
CONFERENCE CODE: 109054
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Peng, C.Y., Yang, J.S., Zheng, Y., Xu, Z.Q., Jiang, X.D.
AUTHOR FULL NAMES: Peng, Chaoyong (22958100200); Yang, Jiansi (14009005600); Zheng, Yu (55921905900); Xu, Zhiqiang (55687377200); Jiang, Xudong (55511748320)
22958100200; 14009005600; 55921905900; 55687377200; 55511748320
Early magnitude estimation for the MW7.9 Wenchuan earthquake using progressively expanded P-wave time window
(2014) Scientific Reports, 4, art. no. 6770, Cited 5 times.
DOI: 10.1038/srep06770
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947272687&doi=10.1038%2Fsrep06770&partnerID=40&md5=47880a1d1a1a8c00917b50bc4e86fd0c

AFFILIATIONS: China Earthquake Administration, Beijing, China
ABSTRACT: More and more earthquake early warning systems (EEWS) are developed or currently being tested in many active seismic regions of the world. A well-known problem with real-time procedures is the parameter saturation, which may lead to magnitude underestimation for large earthquakes. In this paper, the method used to the M<inf>W</inf>9.0 Tohoku-Oki earthquake is explored with strong-motion records of the M<inf>W</inf>7.9, 2008 Wenchuan earthquake. We measure two early warning parameters by progressively expanding the P-wave time window (PTW) and distance range, to provide early magnitude estimates and a rapid prediction of the potential damage area. This information would have been available 40 s after the earthquake origin time and could have been refined in the successive 20 s using data from more distant stations. We show the suitability of the existing regression relationships between early warning parameters and magnitude, provided that an appropriate PTW is used for parameter estimation. The reason for the magnitude underestimation is in part a combined effect of high-pass filtering and frequency dependence of the main radiating source during the rupture process. Finally we suggest only using P<inf>d</inf> alone for magnitude estimation because of its slight magnitude saturation compared to the τ<inf>c</inf> magnitude.
REFERENCES: Hoshiba, Mitsuyuki, Earthquake early warning starts nationwide in Japan, Eos, 89, 8, pp. 73-74, (2008); 
Alçik, Hakan A., A study on warning algorithms for Istanbul earthquake early warning system, Geophysical Research Letters, 36, 5, (2009); 
Allen, Richard M., Real-time earthquake detection and hazard assessment by ElarmS across California, Geophysical Research Letters, 36, 5, (2009); 
Espinosa-Aranda, J. Manuel, Evolution of the mexican seismic alert system (SASMEX), Seismological Research Letters, 80, 5, pp. 694-706, (2009); 
Hsiao, Naichi, Development of earthquake early warning system in Taiwan, Geophysical Research Letters, 36, 5, (2009); 
Kamigaichi, Osamu, Earthquake early warning in Japan: Warning the general public and future prospects, Seismological Research Letters, 80, 5, pp. 717-726, (2009); 
Nakamura, Hiromitsu, Evaluation of the real-time earthquake information system in Japan, Geophysical Research Letters, 36, 5, (2009); 
Zollo, Aldo, Earthquake early warning system in southern Italy: Methodologies and performance evaluation, Geophysical Research Letters, 36, 5, (2009); 
Satriano, Claudio, PRESTo, the earthquake early warning system for Southern Italy: Concepts, capabilities and future perspectives, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 137-153, (2011); 
Peng, Hanshu, Developing a prototype earthquake early warning system in the Beijing capital region, Seismological Research Letters, 82, 3, pp. 394-403, (2011)
PUBLISHER: Nature Publishing Group Houndmills Basingstoke, Hampshire RG21 6XS
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Yuan, K.-G., Liu, T.
AUTHOR FULL NAMES: Yuan, Kaiguo (36717090000); Liu, Tan (57213151755)
36717090000; 57213151755
A study of natural recovery of vegetation in Wenchuan Earthquake affected zone via remotesensing
(2014), art. no. 6927871, pp. 166 - 170, Cited 0 times.
DOI: 10.1109/EORSA.2014.6927871
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912139808&doi=10.1109%2FEORSA.2014.6927871&partnerID=40&md5=d49a5e81f25eb5ec629cb8134c3ddc15

AFFILIATIONS: Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan, Hunan, China; College of Resources Science and Technology, Beijing Normal University, Beijing, China
ABSTRACT: Based on multioral remote sensing data and spatial analysis of GIS, this paper analyzes the characteristics of the ecological destruction and recovery in the seriously damaged areas of Wenchuan Earthquake. By employing the TM, MODIS NDVI multioral data, it analyzes the changes in vegetation and using the Vegetation recovery rate to evaluate the recovery characteristics. The result shows that the forest and grassland areas declined significantly. The multioral NDVI data also shows the fluctuation before and after the earthquake. The average VRR was 37.4% until September 2009. The areas located on the slope base which had been corroded by flowing water and the steep mountain ridges are in undesirable situation. There are drought resistance shrub and grass growth beside the roads and dried vallies, and now they are spreading to the collapsed and landslide areas. The soil, climatic, and water-thermal-fertility conditions are the important factors for vegetation recovery. © 2014 IEEE.
AUTHOR KEYWORDS: Remote sensing monitoring; Vegetation Recovery; Vegetation Recovery Rate
INDEX KEYWORDS: Earthquakes; Recovery; Vegetation; Drought resistance; Forest and grassland; Natural recovery; Remote sensing data; Remote sensing monitoring; Spatial analysis; Vegetation recovery; Wenchuan Earthquake; Remote sensing
REFERENCES: Lin, Wentzu, Vegetation recovery monitoring and assessment at landslides caused by earthquake in Central Taiwan, Forest Ecology and Management, 210, 1-3, pp. 55-66, (2005); 
Lin, Wentzu, Eco-environmental changes assessment at the Chiufenershan landslide area caused by catastrophic earthquake in Central Taiwan, Ecological Engineering, 33, 3-4, pp. 220-232, (2008); 
Bao, Weikai, Ecological degradation in the Wenchuan Earthquake seriously affected region in Sichuan, China, Chinese Journal of Applied and Environmental Biology, 14, 4, pp. 441-444, (2008); 
Zhan, Xiwu, Detection of land cover changes using MODIS 250 m data, Remote Sensing of Environment, 83, 1-2, pp. 336-350, (2002); 
Lunetta, Ross S., Land-cover change detection using multi-temporal MODIS NDVI data, Remote Sensing of Environment, 105, 2, pp. 142-154, (2006); 
Moody, Aaron J., Land-surface phenologies from AVHRR using the discrete fourier transform, Remote Sensing of Environment, 75, 3, pp. 305-323, (2001); 
Tucker, Compton James, Satellite remote sensing of drought conditions, Remote Sensing of Environment, 23, 2, pp. 243-251, (1987); 
Journal of Remote Sensing, (1999); 
Sun, Rui, Distribution and seasonal change of net primary productivity in China from April, 1992 to March, 1993, Dili Xuebao/Acta Geographica Sinica, 55, 1, pp. 36-45, (2000); 
Acta Botanica Sinica, (2000)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: Central South University, Central South University of Forestry and Technology, Chinese Academy of Forestry, et al., Hunan University of Science and Technology, Indiana State University
CONFERENCE NAME: 3rd International Workshop on Earth Observation and Remote Sensing Applications, EORSA 2014
CONFERENCE DATE: 2014-06-11 through 2014-06-14
CONFERENCE LOCATION: Changsha
CONFERENCE CODE: 108753
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Guo, L.Y., Wu, J.C.
AUTHOR FULL NAMES: Guo, Linying (57217408307); Wu, Jicang (55711131300)
57217408307; 55711131300
3D coseismic deformation of Wenchuan Ms8.0 earthquake with D-InSAR technology and the thrust fault movement model
(2014), art. no. 6927851, pp. 67 - 70, Cited 1 times.
DOI: 10.1109/EORSA.2014.6927851
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912070279&doi=10.1109%2FEORSA.2014.6927851&partnerID=40&md5=8394f9bb9904129c6b94286d3f1e4438

AFFILIATIONS: College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
ABSTRACT: In this paper, 3D coseismic displacements of Wenchuan Ms8.0 Earthquake are obtained by using D-InSAR method and a simulated thrust fault movement model. At first, thirty six L-band PALSAR images of six adjacent ascending tracks are processed with D-InSAR method and get correct coseismic displacements in LOS (line of sight) direction. For recovering 3D coseismic displacement field, the thrust fault movement model of the Long-Men-Shan Fault is formulated based on the field investigations of surface ruptures, which can be used to specify the directions of surface coseismic displacements accordingly. So the 3D coseismic displacement field is then recovered from LOS displacement obtained and relevant formulas for the conversion are given. Horizontal displacements field over the earthquake fault and vertical deformation contour maps are produced based on the 3D coseismic displacements recovered. At last, the coseismic deformation characteristics of this big earthquake are summarized. © 2014 IEEE.
AUTHOR KEYWORDS: 3D coseismic displacements; D-InSAR; fault models; Wenchuan earthquake
INDEX KEYWORDS: Deformation; Earthquakes; Motion compensation; Recovery; Remote sensing; Co-seismic displacement; Coseismic deformation; D-inSAR; Fault model; Field investigation; Horizontal displacements; Vertical deformation; Wenchuan Earthquake; Faulting
REFERENCES: Xu, Caijun, Coseismic slip distribution of the 2008 mw 7.9 Wenchuan earthquake from joint inversion of GPS and InSAR data, Bulletin of the Seismological Society of America, 100, 5 B, pp. 2736-2749, (2010); 
Hao, Ken Xiansheng, Coseismic surface-ruptures and crustal deformations of the 2008 Wenchuan earthquake MW 7.9, China, Geophysical Research Letters, 36, 11, (2009); 
Zhang, Guohong, Slip distribution and source parameters inverted from co-seismic deformation derived by InSAR technology of Wenchuan Mw7.9 earthquake, Acta Geophysica Sinica, 53, 2, pp. 269-279, (2010); 
Zhang, Peizlien Zhen, Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China, Acta Geophysica Sinica, 51, 4, pp. 1066-1073, (2008); 
Feng, Guangcai, Coseismic fault slip of the 2008 Mw 7.9 Wenchuan earthquake estimated from InSAR and GPS measurements, Geophysical Research Letters, 37, 1, (2010); 
Bull Seismol Soc Am, (1985); 
Sun, Jianbao, InSAR deformation observation and preliminary analysis of the MS8 Wenchuan earthquake, Dizhen Dizhi, 30, 3, pp. 789-795, (2008); 
Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009); 
Gamma Interferometric SAR Processor Users Guide, (2003)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: Central South University, Central South University of Forestry and Technology, Chinese Academy of Forestry, et al., Hunan University of Science and Technology, Indiana State University
CONFERENCE NAME: 3rd International Workshop on Earth Observation and Remote Sensing Applications, EORSA 2014
CONFERENCE DATE: 2014-06-11 through 2014-06-14
CONFERENCE LOCATION: Changsha
CONFERENCE CODE: 108753
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jiang, L., Liu, D., Jiang, Y.H., Fang, H.
AUTHOR FULL NAMES: Jiang, Ling (55197801300); Liu, Desheng (55577793400); Jiang, Yuhong (7404832288); Fang, Hao (55490680900)
55197801300; 55577793400; 7404832288; 55490680900
Landside susceptibility assessment based on weighted information value model: A case study of Wenchuan earthquake 10 degree region
(2014), art. no. 6910655, Cited 3 times.
DOI: 10.1109/Agro-Geoinformatics.2014.6910655
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84909993118&doi=10.1109%2FAgro-Geoinformatics.2014.6910655&partnerID=40&md5=494277c3f7cb4b65c25b238cb345e196

AFFILIATIONS: School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, Sichuan, China; Department of Geography, The Ohio State University, Columbus, OH, United States; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Information value model is a widely used landslide susceptibility assessment method. However, it neglects the weights of different factors. This paper proposes the weighted information value model based on AHP. The impact of seismic intensity (SC), land-use types (LUT), lithology types(LT), fault density (FD), terrain (T) and rainfall(R) on landslide in the 512 Wenchuan earthquake-hit 10 degree region of the Longmenshan fault zone(LFZ) is assessed with GIS spatial analysis. According to the weighted information value of these controlling factors, the study area can be divided into five classes: extremely, high, intermediate, low and very low susceptible areas for landslide occurrence. © 2014 IEEE.
AUTHOR KEYWORDS: AHP; landslide; susceptibility; weighted information value
INDEX KEYWORDS: Faulting; Hierarchical systems; Land use; Landslides; Lithology; Magnetic susceptibility; 512 wenchuan earthquakes; Controlling factors; Information value; Landslide susceptibility assessments; Longmenshan fault zone; Seismic intensity; Spatial analysis; Wenchuan Earthquake; Earthquakes
REFERENCES: Geological Science and Technology Information, (2000); 
Journal of Engineering Geology, (2002); 
Earth Science Frontiers, (2001); 
Wu, Shuren, Assessments of landslide hazards in Fengdu County, Chongqing City, Three Gorges reservoir region of the Yangtze River, China, Geological Bulletin of China, 26, 5, pp. 574-582, (2007); 
Zhang, Chunshan, Assessments of geohazard danger zoning in Longxian County, Shaanxi, China, Geological Bulletin of China, 27, 11, pp. 1795-1801, (2008); 
Shen-Yong, R., Application of Gis-based information model on assesment of geological hazards risk, Journal of the Chengdu Institute of Technology, 28, 1, pp. 89-92, (2001); 
Acta Geoscientica Sinica, (2005); 
Journal of Earth Sciences and Environment, (2004); 
Chinese Journal of Geological Hazard and Control, (2003); 
Xu, Chong, GIS-based landslide susceptibility assessment using analytical hierarchy process in wenchuan earthquake region, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, SUPPL. 2, pp. 3978-3985, (2009)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
SPONSORS: Chinese Society of Agricultural Resources and Regional Planning, et al., Geoscience and Remote Sensing Society (GRSS), Institute of Electrical and Electronics Engineers (IEEE), Open Geospatial Consortium (OGC), State Administration of Foreign Experts Affairs of China
CONFERENCE NAME: 2014 3rd International Conference on Agro-Geoinformatics, Agro-Geoinformatics 2014
CONFERENCE DATE: 2014-08-11 through 2014-08-14
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 114697
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Qin, K., Wu, L., Zheng, S., Bai, Y., Lv, X.
AUTHOR FULL NAMES: Qin, Kai (35220430700); Wu, Lixin (55714061400); Zheng, Shuo (55928146200); Bai, Yang (56201568500); Lv, X. (56201468000)
35220430700; 55714061400; 55928146200; 56201568500; 56201468000
Is there an abnormal enhancement of atmospheric aerosol before the 2008 Wenchuan earthquake?
(2014) Advances in Space Research, 54 (6), pp. 1029 - 1034, Cited 30 times.
DOI: 10.1016/j.asr.2014.04.025
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905491976&doi=10.1016%2Fj.asr.2014.04.025&partnerID=40&md5=5f472dcf611ddaa7beef4bf0c62e2c6d

AFFILIATIONS: School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China; IoT Perception Mine Research Center, China University of Mining and Technology, Xuzhou, Jiangsu, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: There are extensive reports of ionospheric disturbances before the great 2008 Wenchuan earthquake, which are possibly explained by seismogenic electric field hypotheses linked with the aerosols injected in atmosphere. This paper attempts to investigate the possible change of atmospheric aerosol optical depth (AOD) associated with this earthquake by using MODIS data from both Terra and Aqua satellites. The result shows a clear enhancement of AOD along the Longmenshan faults 7 days before the quake, which is 1 day and 4 days earlier than the reported negative and positive ionospheric disturbances, respectively, and is 1 day earlier than or quasi-synchronism with other reported atmospheric anomalies including air temperature, outgoing longwave radiation and relative humidity. Particularly, the spatial distribution of AOD enhancement is very local and it is correlated well with the active faults and surface ruptures. We suggest that this unique enhancement could be associated with the Lithosphere-Atmosphere-Ionosphere coupling process during the preparation of the Wenchuan earthquake. © 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.
AUTHOR KEYWORDS: Aerosol optical depth; Anomaly; MODIS; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Atmospheric aerosols; Atmospheric humidity; Atmospheric thermodynamics; Electric fields; Faulting; Ionosphere; Ionospheric electromagnetic wave propagation; Ionospheric measurement; Optical properties; Radiometers; Remote sensing; 2008 wenchuan earthquakes; Aerosol optical depths; Anomaly; Atmosphere-ionosphere couplings; Ionospheric disturbance; MODIS; Outgoing longwave radiation; Wenchuan Earthquake; Earthquakes
REFERENCES: Błeçki, Jan S., Studies of the electromagnetic field variations in ELF frequency range registered by DEMETER over the Sichuan region prior to the 12 May 2008 earthquake, International Journal of Remote Sensing, 31, 13, pp. 3615-3629, (2010); 
Boyarchuk, Kirill A., Variability of the earth's atmospheric electric field and ion-aerosols kinetics in the troposphere, Studia Geophysica et Geodaetica, 42, 2, pp. 197-210, (1998); 
Chu, D. Allen, Validation of MODIS aerosol optical depth retrieval over land, Geophysical Research Letters, 29, 12, pp. MOD2-MOD2-4, (2002); 
Fu, Bihong, The 2008 Wenchuan earthquake and active tectonics of Asia, Journal of Asian Earth Sciences, 40, 4, pp. 797-804, (2011); 
Kakinami, Yoshihiro, Ionospheric electron content anomalies detected by a FORMOSAT-3/COSMIC empirical model before and after the Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3571-3578, (2010); 
Klimenko, Maxim V., Formation mechanism of great positive TEC disturbances prior to Wenchuan earthquake on May 12, 2008, Advances in Space Research, 48, 3, pp. 488-499, (2011); 
Lin, Jyh Woei, Use of principal component analysis in the identification of the spatial pattern of an ionospheric total electron content anomalies after China's May 12, 2008, M = 7.9 Wenchuan earthquake, Advances in Space Research, 47, 11, pp. 1983-1989, (2011); 
Liu, Jann Yenq Tiger, Seismoionospheric GPS total electron content anomalies observed. before the 12 May 2008 Mw7.9 Wenchuan earthquake, Journal of Geophysical Research: Space Physics, 114, 4, (2009); 
Luo, Yunfeng, Characteristics of the spatial distribution and yearly variation of aerosol optical depth over China in last 30 years, Journal of Geophysical Research, 106, D13, pp. 14501-14513, (2001); 
Okada, Yasuhiko, Changes in atmospheric aerosol parameters after Gujarat earthquake of January 26, 2001, Advances in Space Research, 33, 3, pp. 254-258, (2004)
PUBLISHER: Elsevier Ltd
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, S.-Y., Ma, J., Liu, P.-X., Liu, L.-Q., Hu, X.-Y., Ren, Y.-Q.
AUTHOR FULL NAMES: Chen, Shunyun (26643337900); Ma, Jin (7406201736); Liu, Peixun (56170358200); Liu, Liqiang (13409244500); Hu, Xiaoyan (56388906400); Ren, Yaqiong (55438017800)
26643337900; 7406201736; 56170358200; 13409244500; 56388906400; 55438017800
Exploring the current tectonic activity with satellite remote sensing thermal information: A case of the Wenchuan earthquake
(2014) Dizhen Dizhi, 36 (3), pp. 775 - 793, Cited 16 times.
DOI: 10.3969/j.issn.0253-4967.2014.03.018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908092996&doi=10.3969%2Fj.issn.0253-4967.2014.03.018&partnerID=40&md5=dc9f3d5a19d08b338b80d61c1d8cf184

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The objective of this paper is to explore the current tectonic activity with satellite remote sensing thermal information by taking a case of the Wenchuan earthquake. Three items are accomplished as follows: 1) the process of evaluation of thermal field before and after Wenchuan earthquake is analyzed. The results indicate that there exist plenty of thermal information associated with the distribution of tectonics in the in-situ land surface temperature field, which is extracted from land surface temperature in which the effects of non-tectonic factors, such as topography, atmosphere and solar radiation are gotten rid of. 2) Combining with measurement of the shallow atmosphere temperature, the quantitative relationship between increment of land surface temperature and crustal stress-strain is preliminarily investigated. Results indicate that the increment generated by the crustal stress may obviously affect the shallow atmosphere temperature. Especially, the temperature-lowering zone has more reliability. There exist some temperature lowering zones along the boundaries of large geological blocks before and after Wenchuan earthquake, which reflects the relatively extensional movement (or stress relaxation) among these corresponding blocks. 3) Based on the co-seismic deformation, the comparative analysis is done between co-seismic deformation and thermal information. Results indicate that the tectonically adjusted area obtained from temperature field is largely accordant with that of co-seismic deformation. This shows that the variation of temperature along the boundaries of large geological blocks within the Tibet Plateau reflects the process of the adjustment of crustal deformation of the Tibet Plateau before and after Wenchuan earthquake. In summary, it is a possible approach to obtain the change of state of crustal stress by using the thermal method.
AUTHOR KEYWORDS: Current tectonic activity; Land surface temperature; Physical mechanism; Satellite remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Aircraft propulsion; Deformation; Earthquakes; Land surface temperature; Radiation effects; Remote sensing; Satellites; Stress relaxation; Stress-strain curves; Surface measurement; Surface properties; Tectonics; Topography; Atmosphere temperature; Comparative analysis; Coseismic deformation; Crustal deformations; Current tectonic activities; Physical mechanism; Satellite remote sensing; Wenchuan Earthquake; Atmospheric temperature; crustal movement; earthquake event; land surface; movement; remote sensing; stress-strain relationship; tectonics; China; Sichuan; Wenchuan
REFERENCES: Chen, Meihua, The relationship between the satellite infrared anomalies before earthquake and the seismogenic fault - A case study on the 2001 Kunlun Earthquake, Dizhen Dizhi, 25, 1, pp. 100-108, (2003); 
Chen, Shunyun, Theoretical and experimental study on relationship between stress-strain and temperature variation, Science in China, Series D: Earth Sciences, 52, 11, pp. 1825-1834, (2009); 
Chin J Geophys, (2006); 
Chinese Journal of Geophysics, (2011); 
Chin J Geophys, (2009); 
Chen, Shunyun, Normal annual variation field of land surface brightness temperature in China, Dizhen Dizhi, 26, 3, pp. 528-538, (2004); 
Chen, Shunyun, A thermal physical index to explore current tectonic activity with satellite remote sensing, Science China Earth Sciences, 55, 2, pp. 290-295, (2012); 
Zhou, Jiangcun, Exploring co-seismic thermal response of Wenchuan earthquake by using land surface Temperatures of Terra and Aqua Satellites, Acta Geophysica Sinica, 56, 11, pp. 3788-3789, (2013); 
Deng, Qidong, Basic characteristics of active tectonics of China, Science in China, Series D: Earth Sciences, 46, 4, pp. 356-372, (2003); 
Guo, Qiliang, In-situ hydro-fracture stress measurement before and after the Wenchuan Ms8. 0 earthquake of China, Acta Geophysica Sinica, 52, 5, pp. 1395-1401, (2009)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, J., Yu, Y., Yang, S., Lu, G.-H., Ou, G.-Q.
AUTHOR FULL NAMES: Wang, Jun (59449452300); Yu, Yan (56364602800); Yang, Shun (55235532800); Lu, Guihong (55781871700); Ou, Guoqiang (8891006800)
59449452300; 56364602800; 55235532800; 55781871700; 8891006800
A modified certainty coefficient method (M-CF) for debris flow susceptibility assessment: A case study for the Wenchuan earthquake meizoseismal areas
(2014) Journal of Mountain Science, 11 (5), pp. 1286 - 1297, Cited 22 times.
DOI: 10.1007/s11629-013-2781-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907194061&doi=10.1007%2Fs11629-013-2781-7&partnerID=40&md5=e136f46539aba7cfdc183b83c3d5e0a8

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: In the meizoseismal areas hit by the China Wenchuan earthquake on May 12, 2008, the disasterprone environment has changed dramatically, making the susceptibility assessment of debris flow more complex and uncertain. After the earthquake, debris flow hazards occurred frequently and effective susceptibility assessment of debris flow has become extremely important. Shenxi gully in Du Jiangyan city, located in the meizoseismal areas, was selected as the study area. Based on the research of disaster-prone environment and the main factors controlling debris flow, the susceptibility zonations of debris flow were mapped using factor weight method (FW), certainty coefficient method (CF) and geomorphic information entropy method (GI). Through comparative analysis, the study showed that these three methods underestimated susceptible degree of debris flow when used in the meizoseismal areas of Wenchuan earthquake. In order to solve this problem, this paper developed a modified certainty coefficient method (M-CF) to reflect the impact of rich loose materials on the susceptible degree of debris flow. In the modified method, the distribution and area of loose materials were obtained by field investigations and postearthquake remote sensing image, and four data sets, namely, lithology, elevation, slop and aspect, were used to calculate the CF values. The result of M-CF method is in agreement with field investigations and the accuracy of the method is satisfied. The method has a wide application to the susceptibility assessment of debris flow in the earthquake stricken areas. © 2014, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Debris flow; Disaster-prone environment; Modified certainty coefficient method (M-CF); Susceptibility assessment; Wenchuan earthquake
REFERENCES: Journal of Soil and Water Conservation, (1988); 
Dong, J. J., Debris-budget-based debris-flow susceptibility analysis, pp. 145-152, (2008); 
Uncertainty in Artificial Intelligence, (1986); 
Hürlimann, Marcel, Detailed debris flow hazard assessment in Andorra: A multidisciplinary approach, Geomorphology, 78, 3-4, pp. 359-372, (2006); 
Han, Yongshun, Susceptibility of mountain hazards triggered by Wenchuan Earthquake to topographic factors, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, SUPPL. 1, pp. 15-21, (2010); 
Jinsoo, Kim, GIS-based landslide susceptibility analyses and cross- validation using a probabilistic model on two test areas in Korea, Disaster Advances, 6, 10, pp. 45-54, (2013); 
Journal of Catastrophology, (1988); 
Yunnan Geographic Environment Research, (1993); 
Journal of Natural Disasters, (2002); 
Geology and Prospecting, (2001)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Feng, T., Hong, Z., Fu, Q., Ma, S., Jie, X., Wu, H., Jiang, C., Tong, X.
AUTHOR FULL NAMES: Feng, Tienan (57200335585); Hong, Zhonghua (57918901800); Fu, Qiushi (55272196700); Ma, S. (56805881000); Jie, X. (56478507900); Wu, Hao (59813833600); Jiang, Chenghua (55774576200); Tong, Xiaohua (55500134600)
57200335585; 57918901800; 55272196700; 56805881000; 56478507900; 59813833600; 55774576200; 55500134600
Application and prospect of a high-resolution remote sensing and geo-information system in estimating earthquake casualties
(2014) Natural Hazards and Earth System Sciences, 14 (8), pp. 2165 - 2178, Cited 18 times.
DOI: 10.5194/nhess-14-2165-2014
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929338617&doi=10.5194%2Fnhess-14-2165-2014&partnerID=40&md5=703cd7473cc31fefec210ab514c43fc4

AFFILIATIONS: Tongji University, Shanghai, China; Tongji University School of Medicine, Shanghai, China; College of Surveying and Geo-Informatics, Tongji University, Shanghai, China; College of Civil Engineering, Tongji University, Shanghai, China; College of Information Technology, Shanghai Ocean University, Shanghai, China
ABSTRACT: An accurate estimation of a casualty rate is critical in response to earthquake disasters, and could allow an increase in the survival rate. Building damage is considered to be a major cause of earthquake casualties in developing countries. High-resolution satellite imagery (HRSI) can be used to detect the building damage in a period of a short time. This makes it possible to use a model to estimate earthquake casualties immediately after the occurrence of an earthquake. With respect to the capability of HRSI, this study built a new model for estimating the casualty rate in an earthquake disaster based on remote sensing and a geographical information system. Three groups of earthquake data, the 2003 Bam earthquake, the 2008 Wenchuan earthquake, and the 2010 Yushu earthquake, were used to evaluate this model. The results indicated that our new model significantly improved the accuracy in predicting the casualty rate. The parameters used in the model vary between developed and developing countries. This study could provide valuable information for a more efficient rescue operation in response to earthquakes. © Author(s) 2014. CC Attribution 3.0 License.
INDEX KEYWORDS: Bam earthquake 2003; developing world; disaster management; earthquake damage; GIS; remote sensing; satellite imagery; Sichuan earthquake 2008; Yushu earthquake 2010
REFERENCES: Aghamohammadi, Hossein, Seismic human loss estimation for an earthquake disaster using neural network, International Journal of Environmental Science and Technology, 10, 5, pp. 931-939, (2013); 
Ameri, Gabriele, The 6 April 2009 Mw 6.3 L'Aquila (Central Italy) earthquake: Strong-motion observations, Seismological Research Letters, 80, 6, pp. 951-966, (2009); 
Proceedings of the Sixth World Conference on Earthquake Engineering, (1977); 
Aubrecht, Christoph, Integrating earth observation and GIScience for high resolution spatial and functional modeling of urban land use, Computers, Environment and Urban Systems, 33, 1, pp. 15-25, (2009); 
Risk Analysis VII Brownfields, (2010); 
Proceedings of the 13th International Conference on Geographic Information Science, (2010); 
Aubrecht, Christoph, Introducing a temporal component in spatial vulnerability analysis, Disaster Advances, 5, 2, pp. 48-53, (2012); 
Aubrecht, Christoph, Multi-level geospatial modeling of human exposure patterns and vulnerability indicators, Natural Hazards, 68, 1, pp. 147-163, (2013); 
Barbat, A. H., Seismic damage evaluation in urban areas using the capacity spectrum method: Application to Barcelona, Soil Dynamics and Earthquake Engineering, 28, 10-11, pp. 851-865, (2008); 
Benz, Ursula Caroline, Multi-resolution, object-oriented fuzzy analysis of remote sensing data for GIS-ready information, ISPRS Journal of Photogrammetry and Remote Sensing, 58, 3-4, pp. 239-258, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Ren, Z., Zhang, Z., Dai, F., Yin, J., Zhang, H.
AUTHOR FULL NAMES: Ren, Zhikun (26321922800); Zhang, Zhuqi (24588369900); Dai, Fuchu (7102055666); Yin, Jinhui (7401693283); Zhang, Huiping (13807113100)
26321922800; 24588369900; 7102055666; 7401693283; 13807113100
Topographic changes due to the 2008 Mw7.9 Wenchuan earthquake as revealed by the differential DEM method
(2014) Geomorphology, 217, pp. 122 - 130, Cited 27 times.
DOI: 10.1016/j.geomorph.2014.04.020
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899948050&doi=10.1016%2Fj.geomorph.2014.04.020&partnerID=40&md5=009df4d4139c6a82d852800c13225328

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Department of Geophysics, Kyoto University, Kyoto, Kyoto, Japan; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Landscape evolution in active orogenic regions is inevitably affected by the repeated strong earthquakes triggered by the corresponding active faults. However, the lack of adequate methods for the documentation and monitoring of mountain-building processes has resulted in a shortage of quantitative estimates of orogenic and eroded volumes. A strong earthquake and its associated co-seismic landslides represent a sudden pulse in landscape evolution in tectonically active areas. The 2008 Mw. 7.9 Wenchuan earthquake dramatically modified the topography of the Longmen Shan region. Based on topographic data before the earthquake and stereo pairs of post-earthquake remote sensing imagery, we derived pre- and post-earthquake DEMs (digital elevation models) of the three regions along the Longmen Shan Thrust Belt. By comparing the geomorphic features before and after the earthquake, we find that the Wenchuan earthquake smoothed the steep relief and caused a co-seismic uplift of the Longmen Shan region. The medium-relief regions increased; however, the high-relief regions decreased, indicating that the local relief is controlled by repeated strong earthquakes. The changed slope aspect indicates that the formation and modification of the east- and west-facing slopes are controlled by tectonic events in the Longmen Shan region, which might be associated with the regional stress field. However, the unchanged aspects of other slopes might be controlled by long-term erosion rather than tectonic events. The topographic changes, landslide volume and co-seismic uplift indicate that the greatest seismically induced denudation occurred in association with a thrust faulting mechanism and low-angle fault geometry. Our findings reveal that the local relief has been shaped by the localized, seismically induced high rate of denudation within the plateau margins, and that the formation of local relief is also related to tectonic events, especially the events that have occurred on low-angle faults. This study also indicates that the multi-temporal DEM differential method is valuable in detecting seismically induced topographic change.© 2014 Elsevier B.V.
AUTHOR KEYWORDS: Denudation; Differential DEM; Longmen Shan; Topographic change; Wenchuan earthquake
INDEX KEYWORDS: active fault; coseismic process; denudation; digital elevation model; earthquake trigger; landscape evolution; landslide; orogeny; relief; Sichuan earthquake 2008; stress field; tectonic evolution; thrust fault; topographic effect; uplift; China; Longmen Mountains; Sichuan; Wenchuan
REFERENCES: Arrowsmith, Ja Ramón, Tectonic geomorphology of the San Andreas Fault zone from high resolution topography: An example from the Cholame segment, Geomorphology, 113, 1-2, pp. 70-81, (2009); 
J Geophys Res, (1993); 
Avouac, Jean Philippe, Dynamic Processes in Extensional and Compressional Settings - Mountain Building: From Earthquakes to Geological Deformation, 6, pp. 377-439, (2007); 
Avouac, Jean Philippe, Erosion as a driving mechanism of intracontinental mountain growth, Journal of Geophysical Research: Solid Earth, 101, 8, pp. 17747-17769, (1996); 
Beaumont, Christopher M., Himalayan tectonics explained by extrusion of a low-viscosity crustal channel coupled to focused surface denudation, Nature, 414, 6865, pp. 738-742, (2001); 
Introduction to Statistics and Data Analysis for Physicists, (2010); 
Burbank, Douglas W., Tectonic Geomorphology: Second Edition, (2011); 
Burbank, Douglas W., Bedrock incision, rock uplift and threshold hillslopes in the northwestern Himalayas, Nature, 379, 6565, pp. 505-510, (1996); 
Burbank, Douglas W., Decoupling of erosion and precipitation in the Himalayas, Nature, 426, 6967, pp. 652-655, (2003); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, C., Ding, H., Chen, N.
AUTHOR FULL NAMES: Yang, Chenglin (55646442300); Ding, Haitao (55978674000); Chen, Ningsheng (8726157200)
55646442300; 55978674000; 8726157200
A debris flow hazard monitoring and early warning system based on formation and motion processes of debris flow
(2014) Journal of Natural Disasters, 23 (3), pp. 1 - 9, Cited 6 times.
DOI: 10.13577/j.jnd.2014.0301
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84916881657&doi=10.13577%2Fj.jnd.2014.0301&partnerID=40&md5=1b5f4808ca09e4122a3721fa0742d762

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: According to the massive total volume, group-occurring debris flows in the Wenchuan earthquake stricken area, the monitoring and early warning system will be an economic and effective measure. Based on analysis of past performance of debris flow early warning and existing problems, this paper proposed a new debris flow hazard monitoring and early warning system based on the formation and motion mechanism of debris flow. The new system consists of rainfall monitoring, fluid level monitoring, pore-water pressure monitoring, soil moisture monitoring, ground vibration monitoring and video monitoring. And the early warning levels were established after the comprehensive analysis of the threshold values of all these monitorings. It would be suitable to use this comprehensive monitoring and early warning system for protecting debris flow threatened areas in the Wenchuan Earthquake stricken area.
AUTHOR KEYWORDS: Debris flows; Earthquake; Formation process; Monitoring and early warning system; Motion process
INDEX KEYWORDS: debris flow; early warning system; environmental monitoring; formation mechanism; ground motion; hazard assessment; porewater; Sichuan earthquake 2008
REFERENCES: Arattano, Massimo, On the use of seismic detectors as monitoring and warning systems for debris flows, Natural Hazards, 20, 2-3, pp. 197-213, (1999); 
Zhang, Shucheng, A Comprehensive Approach to the Observation and Prevention of Debris Flows in China, Natural Hazards, 7, 1, pp. 1-23, (1993); 
Itakura, Yasumasa, Basic characteristics of ground vibration sensors for the detection of debris flow, Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 25, 9, pp. 717-720, (2000); 
Hürlimann, Marcel, Field and monitoring data of debris-flow events in the Swiss Alps, Canadian Geotechnical Journal, 40, 1, pp. 161-175, (2003); 
Uddin, Mohammad Shorif, Adaptive computer-based spatial-filtering method for more accurate estimation of the surface velocity of debris flowr, Applied Optics, 38, 32, pp. 6714-6721, (1999); 
Debris Flow Hazards Mitigation Mechanics Prediction and Assessment, (2000); 
Itakura, Yasumasa, A debris-flow monitoring devices and methods bibliography, Natural Hazards and Earth System Sciences, 5, 6, pp. 971-977, (2005); 
Journal of Soil and Water Conservation, (1988); 
Journal of Catastrophology, (1992); 
J Mountain Science, (2001)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, J., Hull, V., Huang, J., Yang, W., Zhou, S., Xu, W., Huang, Y., Ouyang, Z., Zhang, H., Liu, J.
AUTHOR FULL NAMES: Zhang, Jindong (12041725600); Hull, Vanessa (24472727900); Huang, Jinyan (55881736700); Yang, Wu (55498812300); Zhou, Shiqiang (12781668300); Xu, Weihua (55487629900); Huang, Yan (55168790000); Ouyang, Zhiyun (7006468812); Zhang, Hemin (7409190854); Liu, Jianguo Gou (35491043300)
12041725600; 24472727900; 55881736700; 55498812300; 12781668300; 55487629900; 55168790000; 7006468812; 7409190854; 35491043300
Natural recovery and restoration in giant panda habitat after the Wenchuan earthquake
(2014) Forest Ecology and Management, 319, pp. 1 - 9, Cited 77 times.
DOI: 10.1016/j.foreco.2014.01.029
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894375292&doi=10.1016%2Fj.foreco.2014.01.029&partnerID=40&md5=d0e63498add12186d61c54070238026b

AFFILIATIONS: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, United States; Institute of Rare Animals and Plants, China West Normal University, Nanchong, Sichuan, China; China Conservation and Research Center for the Giant Panda (CCRCGP), Wenchuan, Sichuan, China; Center for Systems Integration and Sustainability, Michigan State University, East Lansing, MI, United States
ABSTRACT: Natural disasters affect forest ecosystems in profound and complex ways. Artificial restoration projects have been conducted worldwide to repair disaster damage to forests, but the efficacy of such projects in light of naturally occurring recovery processes is rarely evaluated. To fill such an important knowledge gap, we investigated forest recovery and restoration in the world-renowned Wolong Nature Reserve in Sichuan, China after the catastrophic Wenchuan earthquake (magnitude 8.0) in 2008, which caused considerable damage to the forest and habitat of the endangered giant panda. This was the first multi-year field study to document natural recovery of forests in response to this disaster. Forest sampling conducted in panda habitat over a four-year period after the earthquake revealed that natural recovery was rapid, with vegetation covering roughly 70% of once denuded sites by the fourth sampling year. Vegetation recovery was further improved in sampled artificial restoration sites, which recovered from an average of 30% vegetation cover to 70% in only one year. Factors including soil cover and slope were correlated with successful vegetation recovery. New information learned from the multi-year field data provided a finer scale context for understanding the effects of disasters, a novel contribution considering that the majority of previous work has been conducted at the broader scale using remote sensing. Spatial analysis revealed that restoration sites were mainly distributed in areas of suitable slopes and elevations, but a measurable proportion (30-40%) were located too far from the existing panda distribution area and too close to human settlements. The restoration project has thus far had limited direct effect on giant panda conservation, but has indirect effects on improving forest cover in areas previously affected by human disturbances. This study provides a useful reference for understanding conditions affecting forest recovery, which can inform decision-making surrounding the implementation of forest restoration projects and conservation of endangered species, not only in China but also around the world. © 2014 Elsevier B.V.
AUTHOR KEYWORDS: Earthquake; Giant panda; Natural recovery; Restoration
REFERENCES: Attiwill, Peter M., The disturbance of forest ecosystems: the ecological basis for conservative management, Forest Ecology and Management, 63, 2-3, pp. 247-300, (1994); 
Bailey, Trevor C., Interactive spatial data analysis, (1995); 
Bearer, Scott L., Effects of fuelwood collection and timber harvesting on giant panda habitat use, Biological Conservation, 141, 2, pp. 385-393, (2008); 
Cao, Shixiong, Why large-scale afforestation efforts in China have failed to solve the desertification problem, Environmental Science and Technology, 42, 6, pp. 1826-1831, (2008); 
Cao, Shixiong, Damage caused to the environment by reforestation policies in arid and semi-arid areas of China, Ambio, 39, 4, pp. 279-283, (2010); 
undefined, (2008); 
undefined, (2008); 
del Moral, Rroger, Environmental disasters, natural recovery and human responses, pp. 1-219, (2007); 
J Sichuan for Sci Technol, (2011); 
Garwood, Nancy C., Earthquake-caused landslides: A major disturbance to tropical forests, Science, 205, 4410, pp. 997-999, (1979)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Sun, M., Jiang, H., Cai, B., Peng, J., Yang, H., Zhou, Z., Chen, W., Lu, C.D., Zeng, J.
AUTHOR FULL NAMES: Sun, Mingwei (40762384500); Jiang, Hua (57034543200); Cai, Bin (57205849237); Peng, Jin (55223797400); Yang, Hao (57192283270); Zhou, Zhiyuan (55827503100); Chen, Wei (57087427700); Lu, Charles Damien (54782918900); Zeng, Jun (36927457100)
40762384500; 57034543200; 57205849237; 55223797400; 57192283270; 55827503100; 57087427700; 54782918900; 36927457100
Predictive model for estimating the death risk of in-hospitalized injured patients from a large scale disaster; a pattern recognition study based on patient data sets after the 2008 Wenchuan earthquake, China
(2014) Chinese Journal of Emergency Medicine, 23 (3), pp. 308 - 313, Cited 1 times.
DOI: 10.3760/cma.j.issn.1671-0282.2014.03.016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901059785&doi=10.3760%2Fcma.j.issn.1671-0282.2014.03.016&partnerID=40&md5=b1ae235cdb3347c9d306cdcc422ea513

AFFILIATIONS: Department of Computational Mathematics and Biological Statistics, Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
ABSTRACT: Massive earthquake is one of disasters resulting in huge numbers of heavy and serious casualties. Identifying risk factors that lead to organ failure and death is crucial for improving trauma service performance. Pattern recognition technique (PRT) is a new tool for mining important information and in turn can generate new knowledge from huge amount of data. Here we use PRT to identify patterns in the cause of deaths of trauma patients from a massive earthquake in the Wenchuan, China. Methods We conducted a retrospectively data mining study. The data used is from a total of 2, 316 casualties ambulated to the Sichuan Academy of Medical Sciences (SAMS) Trauma Service from May 12 to 20, 2008 after a massive earthquake. Before analysis, data preprocessing and cleansing were conducted. We categorized patient data by survival/non-survival and MODS/non-MODS. According to the result of distribution test, quantitative data was described by mean ± standard deviation (SD) or median (quartile) , Student t testing or Wilcox testing was employed. Qualitative data was described by ratio, χ2 testing of fisher testing was employed. After mortality and multiple organ dysfunctional syndromes ( MODS ) related variables are acquired, partial least squares discriminant analysis (PLS-DA) algorithm was used to establish mortality and MODS correlation model. We adopted two principle components to establish PLS projection plotting, and used variable important projection (VIP) to screen variables that correlated with clinical outcome. Receiver operating characters (ROC) curve was used for sensitivity and specificity analysis. Results The records of 1919 patients were selected by data cleansing, and 31 demographical, physiological-biological parameters and intervention factors were acquired as exposure variables. There were 36 in-hospital death cases, and 17 MODS cases. MODS related mortality was 47. 1% (8/17). In PLS-DA, the first two principal components in the scatter plot could distinguish survival, MODS and deceased patients. For predicting mortality and MODS, the AUC of ROC was 0. 882 and 0. 979, respectively. VIP indicator ( variable importance for the projection) of PLS-DA identified 8 physiological variables ( pH, BE, PaCO<inf>2</inf>, PaO<inf>2</inf>, HCO<inf>3</inf> -1, SBHCO<inf>3</inf>, Cr, volume of fluid resuscitation at the first day in-hospital) comprised a pattern related to in-hospital death event and MODS. Conclusions This study shows that a significant pattern ( comprised by a set of physiological-biological and fluid resuscitation intervention when patient reach to trauma service) emerges which can predict survival probability for hospitalized casualties injured during a massive earthquake. Application of this model may provide a tool to help disaster health providers identify most-at-risk patients, especially after a massive disaster when limited medical resources have to cope with huge numbers of victims.
AUTHOR KEYWORDS: Big data; Case-control; Data mining; Earthquake injury; Mortality; Multiple organ dysfunctional syndrome; Partial least squares discriminant analysis; Pattern recognition technique; Trauma
REFERENCES: undefined, (2008); 
Zhang, Lulu, Rescue efforts management and characteristics of casualties of the Wenchuan earthquake in China, Emergency Medicine Journal, 28, 7, pp. 618-622, (2011); 
Qiu, Jun, Analysis of injuries and treatment of 3 401 inpatients in 2008 Wenchuan earthquake - Based on Chinese Trauma Databank, Chinese Journal of Traumatology - English Edition, 13, 5, pp. 297-303, (2010); 
Jian, Huasheng, Epidemiological investigation on Wenchuan earthquake-struck trauma patients admitted to two hospitals of Chongqing, Chinese Journal of Traumatology - English Edition, 13, 2, pp. 101-102, (2010); 
Xie, Juan, Analysis of 1861 wounded inpatients and deaths in West China Hospital of Sichuan University after the Wenchuan earthquake, Chinese Journal of Evidence-Based Medicine, 8, 8, pp. 591-596, (2008); 
Wen, Jin, A retrospective study of geriatric trauma at a large teaching hospital after the 2008 wenchuan earthquake, International Journal of Gerontology, 4, 3, pp. 115-119, (2010); 
He, Qiang, Crush syndrome and acute kidney injury in the wenchuan earthquake, Journal of Trauma, 70, 5, pp. 1213-1217, (2011); 
Central China Med J, (2009); 
Int J Health Sci Qassim, (2009); 
Detecting Hazardous Intensive Care Patient Episodes Using Real Time Mortality Models, (2009)
PUBLISHER: Chinese Medical Association
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, Z., Zhang, B., Han, Y., Zuo, Z., Zhang, X.
AUTHOR FULL NAMES: Chen, Zhengchao (7409481437); Zhang, Bing (8835983800); Han, Yongshun (8045872900); Zuo, Zhengli (15129287700); Zhang, Xiaoyong (37092262300)
7409481437; 8835983800; 8045872900; 15129287700; 37092262300
Modeling accumulated volume of landslides using remote sensing and DTM data
(2014) Remote Sensing, 6 (2), pp. 1514 - 1537, Cited 40 times.
DOI: 10.3390/rs6021514
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894629166&doi=10.3390%2Frs6021514&partnerID=40&md5=12d4f8dcaec394739490bd86eb642298

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China; Hunan Province Engineering Laboratory of Geospatial Information, Hunan University of Science and Technology, Xiangtan, Hunan, China; National Earthquake Response Support Service, China Earthquake Administration, Beijing, China
ABSTRACT: Landslides, like other natural hazards, such as avalanches, floods, and debris flows, may result in a lot of property damage and human casualties. The volume of landslide deposits is a key parameter for landslide studies and disaster relief. Using remote sensing and digital terrain model (DTM) data, this paper analyzes errors that can occur in calculating landslide volumes using conventional models. To improve existing models, the mechanisms and laws governing the material deposited by landslides are studied and then the mass balance principle and mass balance line are defined. Based on these ideas, a novel and improved model (Mass Balance Model, MBM) is proposed. By using a parameter called the "height adaptor", MBM translates the volume calculation into an automatic search for the mass balance line within the scope of the landslide. Due to the use of mass balance constraints and the height adaptor, MBM is much more effective and reliable. A test of MBM was carried out for the case of a typical landslide, triggered by the Wenchuan Earthquake of 12 May 2008. © 2014 by the authors.
AUTHOR KEYWORDS: Digital terrain model (DTM); Landslide; Mass balance; Remote sensing; Volume calculation; Wenchuan
REFERENCES: World Disasters Report 2001, (2001); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Assilzadeh, Hamid, Landslide catastrophes and disaster risk reduction: A GIS framework for landslide prevention and management, Remote Sensing, 2, 9, pp. 2259-2273, (2010); 
Guzzetti, Fausto, Probabilistic landslide hazard assessment at the basin scale, Geomorphology, 72, 1-4, pp. 272-299, (2005); 
Nichol, Janet Elizabeth, Application of high-resolution stereo satellite images to detailed landslide hazard assessment, Geomorphology, 76, 1-2, pp. 68-75, (2006); 
Jaiswal, Pankaj, Quantitative landslide hazard assessment along a transportation corridor in southern India, Engineering Geology, 116, 3-4, pp. 236-250, (2010); 
Chang, Chiwen, Estimation of sediment volume of debris flow caused by extreme rainfall in Taiwan, Engineering Geology, 123, 1-2, pp. 83-90, (2011); 
Yin, Yueping, Catastrophic landslides associated with the M8.0 Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 70, 1, pp. 15-32, (2011); 
Guzzetti, Fausto, Landslide volumes and landslide mobilization rates in Umbria, central Italy, Earth and Planetary Science Letters, 279, 3-4, pp. 222-229, (2009); 
Sino Geotechnics, (1999)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Peng, C.Y., Yang, J.S., Xue, B., Zhu, X., Chen, Y.
AUTHOR FULL NAMES: Peng, Chaoyong (22958100200); Yang, Jiansi (14009005600); Xue, Bing (7102889443); Zhu, Xiaoyi (55695559900); Chen, Yang (55721087800)
22958100200; 14009005600; 7102889443; 55695559900; 55721087800
Exploring the feasibility of earthquake early warning using records of the 2008 Wenchuan earthquake and its aftershocks
(2014) Soil Dynamics and Earthquake Engineering, 57, pp. 86 - 93, Cited 26 times.
DOI: 10.1016/j.soildyn.2013.11.005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889594880&doi=10.1016%2Fj.soildyn.2013.11.005&partnerID=40&md5=e490d86eb31e8947701b9367b22e1b17

AFFILIATIONS: China Earthquake Administration, Beijing, China; Institute of Earthquake Science, China Earthquake Administration, Beijing, China
ABSTRACT: Earthquake early warning system (EEWS) is one of the effective ways to mitigate earthquake damage and can provide few seconds to tens of seconds of advanced warning time of impending ground motions, allowing for mitigation measures to be taken in the short term. After the devastating Ms8.0 Wenchuan earthquake, hundreds of M4-6 earthquakes occurred with depth range of 2-24km. We explore a practical approach to earthquake early warning in Wenchuan area by determining a ground-motion period parameter τ<inf>c</inf> and a high-pass filtered vertical displacement amplitude parameter Pd from the initial 3s of the P waveforms of these aftershocks with M≥4.0. The empirical relationships both between τ<inf>c</inf> and M, and between Pd and peak ground velocity PGV for the Wenchuan area are presented. The τ<inf>c</inf> result shows that it is systematically greater for slow earthquakes, leading to a possible false alarm. The moment rate function is used to handle the fact that the Pd parameter alone miss the M=8.0 mainshock. These two relationships can be used to detect the occurrence of a major earthquake and provide onsite warning in the area around the station where onset of strong ground motions is expected within seconds after the arrival of the P wave. The robustness of onsite early warning can be increased by using multistation data when the station density is high or by combing τ<inf>c</inf> and Pd as a single indicator. © 2013 Elsevier Ltd.
AUTHOR KEYWORDS: Average period; Earthquake early warning; Magnitude; Peak displacement; Seismic hazard mitigation
INDEX KEYWORDS: Average period; Earthquake early warning; Magnitude; Peak displacement; Seismic hazards; High pass filters; Seismic waves; Earthquake effects; aftershock; displacement; early warning system; earthquake magnitude; feasibility study; ground motion; hazard assessment; mitigation; P-wave; Sichuan earthquake 2008
REFERENCES: Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Wu, Yih-Min Min, Quick and reliable determination of magnitude for seismic early warning, Bulletin of the Seismological Society of America, 88, 5, pp. 1254-1259, (1998); 
Wu, Yih-Min Min, A virtual subnetwork approach to earthquake early warning, Bulletin of the Seismological Society of America, 92, 5, pp. 2008-2018, (2002); 
Horiuchi, Shigeki, An automatic processing system for broadcasting earthquake alarms, Bulletin of the Seismological Society of America, 95, 2, pp. 708-718, (2005); 
Real Time Information Systems for Hazard Mitigation, (1996); 
Proceedings of the 13th World Conference on Earthquake Engineering, (2004); 
Wu, Yih-Min Min, Relationship between peak ground acceleration, peak ground velocity, and intensity in Taiwan, Bulletin of the Seismological Society of America, 93, 1, pp. 386-396, (2003); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Zollo, Aldo, Earthquake magnitude estimation from peak amplitudes of very early seismic signals on strong motion records, Geophysical Research Letters, 33, 23, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhong, X.M., Hou, P.B., Wang, Q., Wang, J.
AUTHOR FULL NAMES: Zhong, Xiumei (35732902300); Hou, Pengbo (55998874100); Wang, Qian (55523038900); Wang, Jun (55742825400)
35732902300; 55998874100; 55523038900; 55742825400
The characteristics of geological disasters triggered by Wenchuan Ms8.0 earthquake in Wudu district and Wenxian county of Gansu province
(2014) Applied Mechanics and Materials, 482, pp. 221 - 224, Cited 0 times.
DOI: 10.4028/www.scientific.net/AMM.482.221
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892166051&doi=10.4028%2Fwww.scientific.net%2FAMM.482.221&partnerID=40&md5=be7f529859316943faf03889e9ef7b08

AFFILIATIONS: Key Laboratory of Loess Earthquake Engineering, Commissariat a l'Energie Atomique et aux Energies Alternatives, Gif-sur-Yvette, France; Lanzhou Institute of Seismology, Commissariat a l'Energie Atomique et aux Energies Alternatives, Gif-sur-Yvette, France; Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou, Gansu, China; Gansu Electric Power Design Institute, Lanzhou, Gansu, China
ABSTRACT: The strong effect on ground damage and the serious earthquake-induced geological disasters are notable features of MS8.0 Wenchuan earthquake. This study obtained 993 earthquake geological disasters in Wudu District and Wenxian County of Gansu Province, by combining field investigation and interpretation of remote-sensing images. Then the characteristics of these geological disasters were investigated statistically using GIS techniques to determine how the occurrence of geological disasters correlated with intensity, distance from the rivers, slopes and elevations. The main results can be summarized as follows: (1) the geological disasters density increased with the increase of earthquake intensity; (2) the geological disasters triggered by earthquake show the feature of zonal distribution along the rivers; (3) the slope steepness is the main factor which controls the development of earthquake-induced geological disasters and most of the geological disasters are distributed with the slopes of 10 to 40 degree; (4) the earthquake-induced geological disasters have corresponding relationships with elevations, and most disasters occur with the elevation of 1000 to 2000 m. © (2014) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: Development characteristics; Earthquake-induced geological disaster; GIS analysis; Wenchuan earthquake
INDEX KEYWORDS: Development characteristics; Earthquake intensity; Field investigation; Geological disaster; GIS analysis; Remote sensing images; Slope steepness; Wenchuan Earthquake; Aerospace engineering; Earthquakes; Remote sensing; Structural design; Disasters
REFERENCES: Journal of Geomenchanics, (2006); 
Chinese Journal of Rock Mechanics and Engineering, (2008); 
Journal of Engineering Geology, (2009); 
Northwestern Seismological Journal, (2010); 
Gansu Geology, (2009); 
Taylor Francis Group, (2009); 
Shang, Yanjun, A super-large landslide in Tibet in 2000: Background, occurrence, disaster, and origin, Geomorphology, 54, 3-4, pp. 225-243, (2003)
CONFERENCE NAME: 2013 International Conference on Structural Engineering, Vibration and Aerospace Engineering, SEVAE 2013
CONFERENCE DATE: 2013-11-23 through 2013-11-24
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, L., Jiang, K.-Y., Liu, F.-P., Jing-Xiang, J.-X.
AUTHOR FULL NAMES: Li, Li (56584923600); Jiang, Kaiyu (57209838065); Liu, Fangping (25650345200); Jing-Xiang, Jingxiang (57085999800)
56584923600; 57209838065; 25650345200; 57085999800
Fuzzy comprehensive evaluation and application for vulnerability of complex geological disaster in southwest mountainous area in China
(2014) Electronic Journal of Geotechnical Engineering, 19 (W), pp. 6929 - 6937, Cited 10 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961324613&partnerID=40&md5=5723ad20678c64e8657405cbbd34350d

AFFILIATIONS: Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Chongqing, China; College of Civil Engineering, Chongqing Three Gorges University, Chongqing, China; Ma'an Shan Surveying and Mapping Technology Institute, China
ABSTRACT: In order to solve the problem of vulnerability assessment for complex geological disaster in southwest mountainous area in china and cope with the increasingly serious situation of disaster prevention and mitigation, vulnerability assessment model and method for geological disasters are put forward in this paper. First of all, vulnerability evaluation indexes were determined to analyze the probability of occurrence and the degree of disaster-causing factors and build a factor set; secondly, the fuzzy mathematics method was applied to determine the fuzzy evaluation set and membership function model; then conducted fuzzy hierarchy comprehensive evaluation and grading for the vulnerability information in target area; Finally, according to the size and level of vulnerability, with the excellent IT processing and statistical capacity for quantitative analysis in ARCGIS, disaster spatial information was superimposed to determine the results of vulnerability coupling evaluation. Pingwu County after "5.12" Wenchuan earthquake was selected as the research object and this model and method were used in fuzzy comprehensive evaluation and application for vulnerability of complex geological disaster in mountainous area. Case analysis shows that: the model and method are feasible in the evaluation of geological disasters, which are in line with real situation and able to help decision-makers on intuitive judgment and control for regional vulnerability. © 2014 ejge.
AUTHOR KEYWORDS: ARCGIS software; Complex mountainous; Fuzzy hierarchy comprehensive model; Vulnerability assessment
INDEX KEYWORDS: Decision making; Disasters; Earthquakes; Functions; Fuzzy set theory; Geology; Grading; Membership functions; Arcgis softwares; Complex mountainous; Comprehensive model; Disaster prevention and mitigations; Fuzzy comprehensive evaluation; Fuzzy mathematics methods; Probability of occurrence; Vulnerability assessments; Disaster prevention; fuzzy mathematics; geological hazard; GIS; hazard assessment; mountain region; natural disaster; Sichuan earthquake 2008; vulnerability; China; Pingwu; Sichuan
REFERENCES: Van Westen, Cees J., Landslide hazard and risk zonation - Why is it still so difficult?, Bulletin of Engineering Geology and the Environment, 65, 2, pp. 167-184, (2006); 
Uzielli, Marco, A conceptual framework for quantitative estimation of physical vulnerability to landslides, Engineering Geology, 102, 3-4, pp. 251-256, (2008); 
Wu, Yue, A quantitative assessment model for property risk caused by single landslide, Yantu Lixue/Rock and Soil Mechanics, 31, SUPPL. 2, pp. 342-348, (2010); 
Journal of Geological Hazards and Environment Preservation, (2008); 
Construction Technology, (2013); 
Mohamad, Edy Tonnizam, The effect of geological structure and powder factor in flyrock accident, Masai, Johor, Malaysia, Electronic Journal of Geotechnical Engineering, 18 X, pp. 5661-5672, (2013); 
Li, Li, Application of ARCGIS and analytical hierarchy process in the risk assessment of geological disaster in complex mountains, Electronic Journal of Geotechnical Engineering, 19 G, pp. 1369-1377, (2014)
PUBLISHER: E-Journal of Geotechnical Engineering oner@okstate.edu
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, M., Liu, M., Yang, S., Shi, P.
AUTHOR FULL NAMES: Wang, Ming (55732001400); Liu, Min (55555318500); Yang, Saini (51764985400); Shi, Peijun (7202160985)
55732001400; 55555318500; 51764985400; 7202160985
Incorporating Triggering and Environmental Factors in the Analysis of Earthquake-Induced Landslide Hazards
(2014) International Journal of Disaster Risk Science, 5 (2), pp. 125 - 135, Cited 29 times.
DOI: 10.1007/s13753-014-0020-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942112581&doi=10.1007%2Fs13753-014-0020-7&partnerID=40&md5=b07876d017cdcdae40b50f62e7155b7d

AFFILIATIONS: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: Pingwu County of Sichuan Province was severely hit by the 12 May 2008 Wenchuan Earthquake and experienced widely distributed earthquake-induced landslides. We proposed an integrated method that incorporates landslide triggering factors embedded in the Newmark displacement computation and other environmental factors, expressed as lithology, land-use type, vegetation cover (Normalized Difference Vegetation Index, NDVI), elevation, and profile and plan curvature, in the analysis of earthquake-induced landslide hazards in the study area. The earthquake-induced landslide inventory of this area was obtained by visual interpretation of two high-resolution SPOT-5 images before and after the earthquake. We used GIS tools to generate an equal number of landslide and non-landslide cell samples in a 30-m grid map, and assigned triggering and environmental variables to each cell. A logistic regression model was built to investigate the occurrence of earthquake-induced landslides. The results show that Newmark displacement (in which triggering factors are embedded) and lithology (as an environmental factor) were the two dominant variables controlling landslide occurrence. Other environmental factors, including NDVI, land-use type, and elevation, also significantly affected landslide occurrences. Overall 81.2 % correctness was achieved in the regression model. The results confirm the predictive power of our method, which integrates both triggering and environmental factors in modeling earthquake-induced landslides. © 2014, The Author(s).
AUTHOR KEYWORDS: Earthquake-induced landslides; Environmental factors; Hazard analysis; Newmark displacement; Triggering factors; Wenchuan earthquake
REFERENCES: Arias A, MEASURE OF EARTHQUAKE INTENSITY, pp. 438-483, (1969); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Baeza, Cristina, Assessment of shallow landslide susceptibility by means of multivariate statistical techniques, Earth Surface Processes and Landforms, 26, 12, pp. 1251-1263, (2001); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Carrara, Alberto, Multivariate models for landslide hazard evaluation, Journal of the International Association for Mathematical Geology, 15, 3, pp. 403-426, (1983); 
An Image Based Study on Typical Geological Hazards Caused by Wenchuan Earthquake, (2009); 
undefined; 
Choi, Jaewon, Combining landslide susceptibility maps obtained from frequency ratio, logistic regression, and artificial neural network models using ASTER images and GIS, Engineering Geology, 124, 1, pp. 12-23, (2012); 
Cruden, David M., A simple definition of a landslide, Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur, 43, 1, pp. 27-29, (1991); 
Duman, Tamer Yiǧit, Application of logistic regression for landslide susceptibility zoning of Cekmece Area, Istanbul, Turkey, Environmental Geology, 51, 2, pp. 241-256, (2006)
PUBLISHER: Beijing Normal University Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, X., Cao, L., Lin, L.
AUTHOR FULL NAMES: Wang, Xiaobo (56747353900); Cao, Lei (56746913500); Lin, Lu (56746855200)
56747353900; 56746913500; 56746855200
Prediction model for debris flow hazard zone on alluvial fan of the Mianyuan river
(2014) International Journal of Earth Sciences and Engineering, 7 (6), pp. 2420 - 2426, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938375292&partnerID=40&md5=64424eaff46ac12d9d2125e62fb11d9c

AFFILIATIONS: College of Geophysics, Chengdu University of Technology, Chengdu, China; College of Education, China West Normal University, Nanchong, Sichuan, China
ABSTRACT: The Wenchuan earthquake generated a large number of collapses and landslides, which contributes much to trigger debris flows that are characterized by high-frequency, swarm, and extensiveness. After the earthquake, Mianyuan River Basin, located in the northwest of Mianzhu City, Sichuan Province, has suffered from debris flows. The author identifies 13 debris flow gullies in the study area as the samples through field investigation, while using GIS and RS to collect data and to analyze the basic parameters of the 13 gullies, such as the drainage area and the volume of material sources. The author uses Spss and Mat lab to obtain the nonlinear regression analysis of the maximum runout width and length of the debris flow, and to figure out the functional relationships between the maximum runout width and the volume of material sources, the maximum runout width and the drainage area, the maximum runout length and the volume of material sources, and the maximum runout length and the drainage area. The functional relationships provide model for debris flow hazard zone of the river, which can take advantage of two factors to distinguish the range of hazard zone of the debris flow. In this way, people can quickly respond to disasters. © 2014 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
AUTHOR KEYWORDS: Drainage area; Mian yuan river; Risk model; Volume of material sources
INDEX KEYWORDS: Earthquakes; Geophysics; Hazards; Landforms; Regression analysis; Risk assessment; Rivers; Collapses and landslides; Debris flow hazards; Drainage area; Functional relationship; Material sources; Non-linear regression analysis; Risk model; Yuan rivers; Debris; alluvial fan; debris flow; drainage; GIS; hazard management; prediction; regression analysis; risk assessment; river basin; China; Mianzhu; Sichuan
REFERENCES: Bulletin of Chinese Academy of Sciences, (2008); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Journal of Geological Hazards and Environment Preservation, (2009); 
Tang, Chuan, Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake, Landslides, 8, 4, pp. 485-497, (2011); 
Tang, Chuan, Catastrophic debris flows on 13 August 2010 in the Qingping area, southwestern China: The combined effects of a strong earthquake and subsequent rainstorms, Geomorphology, 139-140, pp. 559-576, (2012); 
Chinese Academy of Sciences, (1991); 
Sticky Mudslides Lingulate Sedimentary Configuration and Its Profile Features, (1985); 
Mountain Research, (1991); 
Lorente, Adrián, Debris flow characteristics and relationships in the Central Spanish Pyrenees, Natural Hazards and Earth System Sciences, 3, 6, pp. 683-692, (2003)
PUBLISHER: CAFET INNOVA Technical Society cafetinnova@gmail.com 1-2-18/103, Mohini Mansion, Gagan Mahal Road, Domalguda, Hyderabad 500029
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, H., Luo, Z., Zeng, S., Wang, L.
AUTHOR FULL NAMES: Liu, Hanhu (9240308700); Luo, Zhiyong (57198630964); Zeng, Sen (56517518800); Wang, Lei (58456297200)
9240308700; 57198630964; 56517518800; 58456297200
Geo-hazards impacts on vegetation coverage change in Wenchuan after the Wenchuan earthquake
(2014) International Journal of Earth Sciences and Engineering, 7 (6), pp. 2090 - 2099, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938326355&partnerID=40&md5=ff088bbb55e12c166ed253e1054d081e

AFFILIATIONS: State Key Laboratory of GeoHazard Prevention & Geoenvironmental Protection, Chengdu University of Technology, Chengdu, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: A catastrophic earthquake with a Richter magnitude of 8.0 occurred at Wenchuan area of Sichuan province on May 12, 2008. The earthquake caused massive geographic hazards like landslides and mudflows, which destroyed forests and natural vegetation to soil erosion. In order to make decisions and policy planning for the earthquake region, evaluating the vegetation recovery rate is important. One evaluating tool can be used is called “Earth-observation tool”, which has temporal–spatial advantages in a remote sensing technology. The tool can reflect the temporal–spatial difference characteristics of vegetation coverage by analyzing multi-temporal remote sensing images. Accordingly, Dujiangyan-Yinxiu-Caopo area is chosen as a case study. The area was quantitatively evaluated in vegetation recovery conditions by using RS methods and multi-temporal TM/OLI images. In this paper, vegetation index was calculated and further obtained vegetation coverage results in 2001, 2009, 2010 and 2013. According to the final analysis, the vegetation coverage in 2009 was significantly lower than the coverage in 2001, there showed a clear relationship between changes spatial distribution and fault effect; the vegetation coverage in 2010 was lower than that in 2009, and image from different timing, vegetation coverage reduction was influenced by seasonal changes; the vegetation coverage in 2013 was slightly higher than the one in 2010, which meant that vegetation coverage began to be slowly recovering after the Wenchuan Earthquake. The variations, of which vegetation coverage spatial distribution range showed in calculation results, is essential to continuous long-term vegetation coverage in study areas forecasting future development trend. Authors in this paper believe that calculated results can be helpful in decision making and policy planning for recovery and reconstruction in the earthquake-affected areas. © 2014 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
AUTHOR KEYWORDS: Earthquake; Geographic hazards; Remote sensing; TM/OLI; Vegetation index; Wenchuan
INDEX KEYWORDS: Decision making; Geophysics; Hazards; Image analysis; Image reconstruction; Landslides; Recovery; Remote sensing; Spatial distribution; Vegetation; Calculation results; Catastrophic earthquake; Multi-temporal remote sensing; Remote sensing technology; Spatial differences; Vegetation index; Wenchuan; Wenchuan Earthquake; Earthquakes; decision making; hazard assessment; image analysis; policy making; remote sensing; Sichuan earthquake 2008; vegetation cover; vegetation index; China; Sichuan
REFERENCES: Adler-Golden, Steven M., Atmospheric correction for short-wave spectral imagery based on MODTRAN4, Proceedings of SPIE - The International Society for Optical Engineering, 3753, pp. 61-69, (1999); 
Modtran4 Version 2 User S Manual, (1999); 
Chander, Gyanesh, Summary of current radiometric calibration coefficients for Landsat MSS, TM, ETM+, and EO-1 ALI sensors, Remote Sensing of Environment, 113, 5, pp. 893-903, (2009); 
Historic Earthquakes within 200 km of Wenchuan Since 1933, (2008); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Chuang, Chinwei, Application of Markov-chain model for vegetation restoration assessment at landslide areas caused by a catastrophic earthquake in Central Taiwan, Ecological Modelling, 222, 3, pp. 835-845, (2011); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Coppin, P. R., Digital change detection methods in ecosystem monitoring: A review, International Journal of Remote Sensing, 25, 9, pp. 1565-1596, (2004); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011)
PUBLISHER: CAFET INNOVA Technical Society cafetinnova@gmail.com 1-2-18/103, Mohini Mansion, Gagan Mahal Road, Domalguda, Hyderabad 500029
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, H., Zeng, S., Xu, J.
AUTHOR FULL NAMES: Liu, Hanhu (9240308700); Zeng, Sen (56517518800); Xu, Jianming (56517170700)
9240308700; 56517518800; 56517170700
The vegetation coverage dynamics due to geohazards after the 2008 earthquake in Wenchuan
(2014) Proceedings of SPIE - The International Society for Optical Engineering, 9299, art. no. 92990E, Cited 2 times.
DOI: 10.1117/12.2070644
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922874623&doi=10.1117%2F12.2070644&partnerID=40&md5=39c40f4a8f8e81a2df0d59c9481aaaf7

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A catastrophic earthquake with a Richter magnitude of 8.0 occurred at Wenchuan area of Sichuan province on May 12, 2008. The earthquake destroyed forests and natural vegetation. As a result, it is necessary to assess the vegetation recovery rate for decision making and policy planning in earthquake region. In this paper, we calculated the vegetation index in 2001, 2009, 2010, 2013 employing RS methods. According to the analysis of mean change trend of vegetation index, the vegetation index in 2009 was clear lower than that in 2001, the main reason is that the vegetation loss caused by the 2008 Wenchuan earthquake; the vegetation index mean in 2010 was lower than that in 2009, and image imaging at different times, vegetation index mean reduction is caused by seasonal changes; the vegetation index mean in 2013 is slightly higher than that in 2010, it showed that vegetation coverage began to be slowly recovering after the earthquake. According to the standard deviation of vegetation index, vegetation index has the smallest standard deviation in 2001, this showed it has a good homogeneous distribution before the earthquake; vegetation index has the largest standard deviation in 2009, indicates poor homogeneity after the earthquake; from 2009 to 2010 and to 2013, the standard deviation of vegetation index becomes smaller year by year, means that the homogeneity becomes better and vegetation cover also slowly get better. We anticipate that these results will be helpful in decision making and policy planning for recovery and reconstruction in the earthquake-affected area. © 2014 SPIE.
AUTHOR KEYWORDS: Earthquake; Geohazards; Remote sensing; TM/OLI; Vegetation index; Wenchuan
INDEX KEYWORDS: Decision making; Hazards; Recovery; Remote sensing; Statistics; Vegetation; 2008 wenchuan earthquakes; Catastrophic earthquake; Geo-hazards; Homogeneous distribution; Vegetation coverage; Vegetation index; Vegetation recovery; Wenchuan; Earthquakes
REFERENCES: Geohazard Assessment of the Wenchuan Earthquake, (2009); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Lin, Wentzu, Assessment of vegetation recovery and soil erosion at landslides caused by a catastrophic earthquake: A case study in Central Taiwan, Ecological Engineering, 28, 1, pp. 79-89, (2006); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Chuang, Chinwei, Application of Markov-chain model for vegetation restoration assessment at landslide areas caused by a catastrophic earthquake in Central Taiwan, Ecological Modelling, 222, 3, pp. 835-845, (2011); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Zhang, Jindong, Natural recovery and restoration in giant panda habitat after the Wenchuan earthquake, Forest Ecology and Management, 319, pp. 1-9, (2014); 
Justice, Christopher Owen, Analysis of the phenology of global vegetation using meteorological satellite data, International Journal of Remote Sensing, 6, 8, pp. 1271-1318, (1985)
PUBLISHER: SPIE spie@spie.org
SPONSORS: China High-Tech Industrialization Association, Chinese Society of Astronautics (CSA)
CONFERENCE NAME: International Symposium on Optoelectronic Technology and Application 2014: Optical Remote Sensing Technology and Applications, IPTA 2014
CONFERENCE DATE: 2014-05-13 through 2014-05-15
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 110830
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, Q., Chen, Y., Bi, J., Lin, Q.
AUTHOR FULL NAMES: Wang, Qinjun (16205534800); Chen, Yu (56200332700); Bi, Jiantao (7103093390); Lin, Qinzhong (7401703690)
16205534800; 56200332700; 7103093390; 7401703690
A method for quickly extracting seismogeological hazards in Yingxiu, Sichuan Province, China
(2014) Proceedings of SPIE - The International Society for Optical Engineering, 9260, art. no. 92602C, Cited 0 times.
DOI: 10.1117/12.2066117
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922753377&doi=10.1117%2F12.2066117&partnerID=40&md5=47e01b0bff13c1a479809b0e3cdde7de

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: A method for seismogeological hazards extraction using high resolution remote sensing was proposed in the research taken the epicenter of Wenchuan earthquake-Yingxiu town as the study area. In which, making imagery was built according to the Digital Elevation Model (DEM) to remove interfering factors. Then, the masked imagery was diced into several small parts to reduce the large imageries' inconsistency and they were used as the sources to be classified. After that, the vector conversion was performed on the classified images to mapping geological hazards. Finally, other interfering factors such as bare lands, lands covered by few vegetation and buildings on the top altitude were removed manually. For it can extract geological hazards in a short time, it is of great importance for the decision-makers and rescuers to know the damaged degree in the disaster area, especially within 72 hours after the earthquake. Therefore, it will play an important role in decision making, site rescue and hazards response planning. © 2014 SPIE.
AUTHOR KEYWORDS: Remote sensing; Seismogeological hazards; Wenchuan; Yingxiu
INDEX KEYWORDS: Decision making; Disasters; Earthquakes; Geology; Hazards; Surface measurement; Surveying; Decision makers; Digital elevation model; Geological hazards; High resolution remote sensing; Sichuan province; Wenchuan; Wenchuan Earthquake; Yingxiu; Remote sensing
REFERENCES: Journal of Remote Sensing, (2009); 
Application Research of Computers, (2013); 
J of Institute of Disaster Prevention, (2010); 
Advances in Earth Science, (2011); 
Remote Sensing Information, (2010); 
Remote Sensing Information, (2011); 
Wang, Qinjun, Application of remote sensing for investigating mining geological hazards, International Journal of Digital Earth, 6, 5, pp. 449-468, (2013); 
Chinese Journal of Geological Hazard and Control J, (2002); 
Remote Sensing for Land Resources, (1998); 
Qi, Xin, Hazard assessment of geohazards triggered by the Wenchuan earthquake using GIS technology - Taking Beichuan County of Sichuan Province for example, Journal of Chengdu University of Technology (Science and Technology Edition), 37, 2, pp. 160-167, (2010)
PUBLISHER: SPIE spie@spie.org
SPONSORS: Ministry of Earth Sciences, National Aeronautics and Space Administration (NASA), State Key Laboratory of Remote Sensing Science, The Society of Photo-Optical Instrumentation Engineers (SPIE)
CONFERENCE NAME: Land Surface Remote Sensing II
CONFERENCE DATE: 2010-10-13 through 2010-10-16
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 110660
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jiang, H., Su, Y., Jiao, Q., Zhang, J., Lixia, G., Luo, Y.
AUTHOR FULL NAMES: Jiang, Hongbo (55574483000); Su, Yuanyuan (56512806900); Jiao, Qisong (56233051900); Zhang, Jingfa (14032411600); Lixia, Gong (56514042100); Luo, Yi (55712628700)
55574483000; 56512806900; 56233051900; 14032411600; 56514042100; 55712628700
Typical geologic disaster surveying in Wenchuan 8.0 earthquake zone using high resolution ground LiDAR and UAV remote sensing
(2014) Proceedings of SPIE - The International Society for Optical Engineering, 9262, art. no. 926219, Cited 6 times.
DOI: 10.1117/12.2073976
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922614652&doi=10.1117%2F12.2073976&partnerID=40&md5=8f852d46c64e694d7fc4b65b37ad9420

AFFILIATIONS: Key Laboratory of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: There are nearly all kinds of typical earthquake types in Wenchuan earthquake relics. For the protection and efficient use of seismic data of relics, ground Lidar and UAV are used collected data about the ruined buildings, seismic scarps and other typical seismic information in Wenchuan, Beichuan, Bailu Middle School, Dujiangyan and Xiaoyudong earthquake relics. These data are processed and a high-precision surveying flow of typical earthquake relics is preliminarily formed. © 2014 SPIE.
AUTHOR KEYWORDS: Geologic disaster; Lidar; UAV; Wenchuan earthquake
INDEX KEYWORDS: Disasters; Environmental engineering; Optical radar; Remote sensing; Seismology; Surveying; Surveys; Unmanned aerial vehicles (UAV); Earthquake zones; Geologic disasters; High resolution; High-precision; Middle school; Seismic information; UAV remote sensing; Wenchuan Earthquake; Earthquakes
REFERENCES: Journal of Catastrophology, (2008); 
Journal of Catastrophology, (2011); 
Chinese Journal of Nature, (2009); 
Earthquake Engineering and Engineering Dynamics, (2012); 
Xiwei, Xu, Coseismic reverse- and oblique-slip surface faulting generated by the 2008 Mw 7.9 Wenchuan earthquake, China, Geology, 37, 6, pp. 515-518, (2009)
PUBLISHER: SPIE spie@spie.org
SPONSORS: Ministry of Earth Sciences, National Aeronautics and Space Administration (NASA), State Key Laboratory of Remote Sensing Science, The Society of Photo-Optical Instrumentation Engineers (SPIE)
CONFERENCE NAME: Lidar Remote Sensing for Environmental Monitoring XIV
CONFERENCE DATE: 2014-10-14 through 2014-10-15
CONFERENCE LOCATION: Beijing
CONFERENCE CODE: 110682
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Bai, S.B., Wang, J., Thiebes, B., Cheng, C., Chang, Z.Y.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Wang, Jian (55491249300); Thiebes, Benni (55668276300); Cheng, Chen (55662217700); Chang, Z. Y. (59786545200)
15830966700; 55491249300; 55668276300; 55662217700; 59786545200
Susceptibility assessments of the Wenchuan earthquake-triggered landslides in Longnan using logistic regression
(2014) Environmental Earth Sciences, 71 (2), pp. 731 - 743, Cited 41 times.
DOI: 10.1007/s12665-013-2475-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920777600&doi=10.1007%2Fs12665-013-2475-z&partnerID=40&md5=4f44468c0f759074d2a687d1441368e9

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China
ABSTRACT: In this study a Wenchuan earthquake-induced landslide susceptibility assessment was carried out in the Longnan area in northwestern China using a GIS-based logistic regression model. This region has frequently been affected by landslides in the past, and was intensively affected by the 5.12 Wenchuan earthquake which received considerable international attention. The data used for this study consist of the landslides triggered by the Wenchuan earthquake and a landslide pre-disposing factor database. Information regarding the landslide causative factors came from additional data sources, such as a digital elevation model (DEM) with a 30 × 30 m2 resolution, orthophotos, geological and land-use maps, precipitation records, and information on peak ground acceleration data from the 2008 earthquake. The statistical analysis of the relationship between the Wenchuan earthquake-triggered landslides and pre-disposing factors showed the great influence of lithological and topographical conditions on slope failures. The quality of susceptibility mapping was validated by splitting the study area into training and validation sections. The prediction capability analysis demonstrated that the landslide susceptibility map could be used for land planning as well as emergency planning by local authorities. © 2013, Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: China; Landslide susceptibility; Logistic regression; Longnan; Wenchuan earthquake
INDEX KEYWORDS: Forestry; Land use; Landslides; Lithology; Regression analysis; Surveying; China; Landslide susceptibility; Logistic regressions; Longnan; Wenchuan Earthquake; Earthquakes
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Ayalew, Lulseged, Landslides in Sado Island of Japan: Part II. GIS-based susceptibility mapping with comparisons of results from two methods and verifications, Engineering Geology, 81, 4, pp. 432-445, (2005); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Environ Earth Sci, (2011); 
Beguería, Santiago, Validation and evaluation of predictive models in hazard assessment and risk management, Natural Hazards, 37, 3, pp. 315-329, (2006); 
Bell, Rainer, Quantitative risk analysis for landslides - Examples from Bíldudalur, NW-Iceland, Natural Hazards and Earth System Sciences, 4, 1, pp. 117-131, (2004); 
Proceedings of 4th International Symposium on Landslides, (1984); 
Çan, Tolga, Susceptibility assessments of shallow earthflows triggered by heavy rainfall at three catchments by logistic regression analyses, Geomorphology, 72, 1-4, pp. 250-271, (2005); 
Chacón, José, Engineering geology maps: Landslides and geographical information systems, Bulletin of Engineering Geology and the Environment, 65, 4, pp. 341-411, (2006)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Y., Wang, R., Zschau, J., Chen, Y.-T., Parolai, S., Dahm, T.
AUTHOR FULL NAMES: Zhang, Yong (55620815500); Wang, Rongjiang (55621275200); Zschau, Jochen (6701491733); Chen, Yuntai (9336029200); Parolai, Stefano (6701717729); Dahm, Torsten (55232297500)
55620815500; 55621275200; 6701491733; 9336029200; 6701717729; 55232297500
Automatic imaging of earthquake rupture processes by iterative deconvolution and stacking of high-rate GPS and strong motion seismograms
(2014) Journal of Geophysical Research: Solid Earth, 119 (7), pp. 5633 - 5650, Cited 60 times.
DOI: 10.1002/2013JB010469
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906080085&doi=10.1002%2F2013JB010469&partnerID=40&md5=59e4a3723388ade065ee8a83909f5a45

AFFILIATIONS: School of Earth and Space Sciences, Peking University, Beijing, China; GFZ Helmholtz Centre for Geosciences, Potsdam, Germany; China Earthquake Administration, Beijing, China
ABSTRACT: By combining the complementary advantages of conventional network inversion and backprojection methods, we have developed an iterative deconvolution and stacking (IDS) approach for imaging earthquake rupture processes with near-field complete waveform data. This new approach does not need any manual adjustment of the physical (empirical) constraints, such as restricting the rupture time and duration, and smoothing the spatiotemporal slip distribution. Therefore, it has the ability to image complex multiple ruptures automatically. The advantages of the IDS method over traditional linear or nonlinear optimization algorithms are demonstrated by the case studies of the 2008 Wenchuan and 2011 Tohoku earthquakes. For such large earthquakes, the IDS method is considerably more stable and efficient than previous inversion methods. Additionally, the robustness of this method is demonstrated by comprehensive synthetic tests, indicating its potential contribution to tsunami and earthquake early warning and rapid response systems. It is also shown that the IDS method can be used for teleseismic waveform inversions. For the two major earthquakes discussed here, the IDS method can provide, without tuning any physical or empirical constraints, teleseismic rupture models consistent with those derived from the near-field GPS and strong motion data. Key Points Robust method for automatic imaging of earthquake source Near-real-time source inversion using near-field GPS and strong motion networks Tsunami early warning and earthquake rapid response ©2014. American Geophysical Union. All Rights Reserved.
AUTHOR KEYWORDS: backprojection; early warning; the 2008 Mw7.9 Wenchuan earthquake; the 2011 Mw9.0 Tohoku earthquake; waveform inversion
INDEX KEYWORDS: deconvolution; early warning system; earthquake rupture; GPS; seismic source; seismogram; Sichuan earthquake 2008; strong motion; teleseismic wave; Tohoku earthquake 2011; tsunami; waveform analysis
REFERENCES: Akaike, Hirotsugu, Likelihood and the Bayes procedure, Trabajos de Estadistica Y de Investigacion Operativa, 31, 1, pp. 143-166, (1980); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
Goertz-Allmann, Bettina P., A high-frequency secondary event during the 2004 Parkfield earthquake, Science, 318, 5854, pp. 1279-1283, (2007); 
EOS Trans Am Geophys Un, (2000); 
Chen, Yuntai, A time-domain inversion technique for the tempo-spatial distribution of slip on a finite fault plane with applications to recent large earthquakes in the Tibetan Plateau, Geophysical Journal International, 143, 2, pp. 407-416, (2000); 
Dreger, Douglas S., Empirical Green's function study of the January 17, 1994 Northridge, California earthquake, Geophysical Research Letters, 21, 24, pp. 2633-2636, (1994); 
Ekström, Göran, The global CMT project 2004-2010: Centroid-moment tensors for 13,017 earthquakes, Physics of the Earth and Planetary Interiors, 200-201, pp. 1-9, (2012); 
Fujiwara, Toshiya, The 2011 Tohoku-Oki earthquake: Displacement reaching the trench axis, Science, 334, 6060, (2011); 
Fukuda, Junichi, A fully Bayesian inversion for spatial distribution of fault slip with objective smoothing, Bulletin of the Seismological Society of America, 98, 3, pp. 1128-1146, (2008); 
Graves, Robert W., Broadband ground-motion simulation using a hybrid approach, Bulletin of the Seismological Society of America, 100, 5 A, pp. 2095-2123, (2010)
PUBLISHER: Blackwell Publishing Ltd customerservices@oxonblackwellpublishing.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Yang, B., Cao, C., Tian, R., Liu, C., Tian, H., Liu, D., Xiang, H.
AUTHOR FULL NAMES: Yang, Bin (57223778714); Cao, Chunxiang (14031191400); Tian, Rong (58589304500); Liu, Cheng (57191676703); Tian, Haijing (56041400500); Liu, Di (55505124400); Xiang, Haibing (55576445600)
57223778714; 14031191400; 58589304500; 57191676703; 56041400500; 55505124400; 55576445600
Recovery of evaluation the eco-environmental quality after the Wenchuan Earthquake
(2014) National Remote Sensing Bulletin, 18 (4), pp. 946 - 957, Cited 6 times.
DOI: 10.11834/jrs.20143248
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905125499&doi=10.11834%2Fjrs.20143248&partnerID=40&md5=ba07b6accee2475b6df1db4dfd3473d7

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: This study aims to evaluate the ecological restoration of Wenchuan County after the Wenchuan Earthquake in 2008, and to provide support for further ecological restoration and reconstruction. Simultaneously, this study also focuses on applying remote sensing and Geographic Information System (GIS) technologies to evaluate the ecological environment. Wenchuan County, which was the epicenter of the May 12, 2008 earthquake, was selected for this research, which involved multi-source remote sensing data and other supporting statistical data. An eco-environmental quality evaluation index system was established based on the pressure-state-response framework. The analytic hierarchy process method was used to calculate index weight. The eco-environmental qualities of Wenchuan County in 2007, 2008, and 2013 were evaluated by using the comprehensive index method. The results for the eco-environmental quality evaluation of Wenchuan County in 2007, 2008, and 2013 were obtained. Data gathered on the eco-environmental quality of Wenchuan in 2008 were compared with those obtained in 2007, i. e., before the earthquake. Data on the eco-environmental quality recovery gathered in 2013 were also compared with the data in 2007 (i. e., before the earthquake) and 2008 (i. e., after the earthquake). The result of the analysis showed that 79.4% of Wenchuan County exhibited good eco-environmental quality in 2007. However, the eco-environmental quality of the county was severely damaged by the 2008 earthquake. In particular, the areas near the epicenter suffered from serious destruction. Five years after the earthquake (2013), the eco-environmental quality of Wenchuan County has been successfully restored. In particular, 55.84% of the regional eco-environmental quality of the county has significantly improved compared with that in 2008. The eco-environmental quality of poor regions in the county has also exhibited an obvious improvement. However, the eco-environmental quality in some regions in the county has not fully recovered. Evaluating and analyzing the eco-environmental quality of Wenchuan County in 2007, 2008, and 2013 are feasible by using remote sensing and GIS technologies. Such approaches help determine the space distribution of the eco-environ-mental quality of Wenchuan Earthquake and evaluate its recovery. This study offers several useful recommendations on protecting and restoring the ecological environment that can be applied in the future.
AUTHOR KEYWORDS: Analytic hierarchy process; Ecological recovery; Evaluation; Pressure-state-response framework; Wenchuan Earthquake
REFERENCES: Adriaenssens, Veronique, Fuzzy rule-based models for decision support in ecosystem management, Science of the Total Environment, 319, 1-3, pp. 1-12, (2004); 
Boccardo, Piero, Haiti earthquake damage assessment: Review of the remote sensing role, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 39, pp. 529-532, (2012); 
Cabello, Javier, The ecosystem functioning dimension in conservation: Insights from remote sensing, Biodiversity and Conservation, 21, 13, pp. 3287-3305, (2012); 
Chunxiang, Cao, Epidemic risk analysis after the Wenchuan Earthquake using remote sensing, International Journal of Remote Sensing, 31, 13, pp. 3631-3642, (2010); 
Gonca Coskun, H., Remote sensing and gis techniques for temporal evaluation of environmental impacts on major drinking water dam and basin of metropolis Istanbul, Fresenius Environmental Bulletin, 18, 3, pp. 261-269, (2009); 
Urban Environ Urban Ecol, (2011); 
Du, Peijun, Evaluation of the spatio-temporal pattern of urban ecological security using remote sensing and GIS, International Journal of Remote Sensing, 34, 3, pp. 848-863, (2013); 
Guo, Huadong, Dynamic analysis of the Wenchuan Earthquake disaster and reconstruction with 3-year remote sensing data, International Journal of Digital Earth, 3, 4, pp. 355-364, (2010); 
Halim, Md Abdul, Evaluation of land-use pattern change in West Bhanugach Reserved Forest, Bangladesh, using remote sensing and GIS techniques, Journal of Forestry Research, 19, 3, pp. 193-198, (2008); 
Hammond, A., Environmental indicators: a systematic approach to measuring and reporting on environmental policy performance in the context of sustainable development, (1995)
PUBLISHER: Science Press bcanji@mail.sioc.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Zhao, D., Zhang, M., Yu, M., Zeng, Y., Wu, B.
AUTHOR FULL NAMES: Zhao, Dan (55413878900); Zhang, Miao (55704484200); Yu, Mingzhao (55777350900); Zeng, Yuan (56949561600); Wu, Bingfang (8318166100)
55413878900; 55704484200; 55777350900; 56949561600; 8318166100
Monitoring agriculture and forestry recovery after the Wenchuan Earthquake
(2014) National Remote Sensing Bulletin, 18 (4), pp. 958 - 970, Cited 12 times.
DOI: 10.11834/jrs.20143345
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905098631&doi=10.11834%2Fjrs.20143345&partnerID=40&md5=ace4897f91a073d3d3e80bba7db75124

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The 8.0 M<inf>s</inf> Wenchuan Earthquake in 2008 significantly damaged the local ecosystem of Sichuan Province. In this study, high spatial resolution airborne remote sensing images, spaceborne remote sensing data, and field investigations were used to monitor and analyze agriculture and forestry recovery in Sichuan Province in the five years after the earthquake. The remote sensing images were acquired from the "Wenchuan 5th Anniversary" flight campaign organized by the Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences. For the agricultural aspect, visual interpretation by using high-resolution airborne images acquired from 2008 to 2013 and expert experience were used to determine the status of damaged cultivated areas and to evaluate their recovery. Crop type proportions were collected through ground surveys by using a GVG (GPS, Video, and GIS) instrument over a sampled area, and then, interpolated for regions that were not surveyed. Results revealed that only 17.5% of the 1592 ha damaged arable land could be cultivated five years after the Wenchuan Earthquake. Nearly all usable arable land was cultivated and the cropping structure did not evidently fluctuate after the earthquake. The enthusiasm of local farmers toward their craft was not affected by the unprecedented disaster. This study recommends that the cropping structure must be kept essentially constant to ensure the supply of food in the disaster area. For the forestry aspect, the recovery of three key areas (which are distributed in the dry valley of the Minjiang River area and the montane around the Sichuan Basin area) was monitored via visual interpretation of airborne images. The damage and the recovery status of the entire disaster area were assessed by conducting a time-series change analysis of the normalized difference vegetation index with data from the Moderate-Resolution Imaging Spectroradiometer (MODIS). The results showed that the recovery status of forests in the key areas is relatively good, given that shrubs and young deciduous trees are germinating in most parts of the forests that were destroyed by landslides and mud-rock flows. However, some severely destroyed areas with large slopes and areas that were frequently struck by secondary disasters are still encountering difficulties. In summary, the 46400 ha seriously damaged and the 177000 ha moderately damaged forest areas have fully recovered by 13.52% and 25.84%, respectively, and both have partly recovered by approximately 50%. Some severely destroyed areas, which mainly include the forest areas around Chaping Mountain, require physical intervention to accelerate recovery. A change analysis can directly indicate the damage and recovery status of croplands and forests by using high-resolution airborne images. The airborne remote sensing sensor will continue to play an important role in monitoring ecosystems and in assessing important natural disasters. Meanwhile, a time series analysis can monitor damage and recovery of forests at a large scale by using MODIS data.
AUTHOR KEYWORDS: Agriculture and forestry recovery; Airborne high-resolution remote sensing images; Change detection; Visual interpretation; Wenchuan Earthquake
REFERENCES: undefined, (2008); 
undefined, (2013); 
Journal of Remote Sensing, (2009); 
undefined, (2012); 
Science of Surveying and Mapping, (2006); 
Liu, Bin, Key issues in restoration on earthquake-damaged ecosystem at the ecotone between dry valley and montane forest of the Minjiang River, Shengtai Xuebao, 28, 12, pp. 5892-5898, (2008); 
Ouyang, Zhiyun, Impact assessment of Wenchuan Earthquake on ecosystems, Shengtai Xuebao, 28, 12, pp. 5801-5809, (2008); 
Tsai, Fuan, Derivative analysis of hyperspectral data, Remote Sensing of Environment, 66, 1, pp. 41-51, (1998); 
Chinese Journal of Applied and Environmental Biology, (2003); 
Research of Environmental Sciences, (2008)
PUBLISHER: Science Press bcanji@mail.sioc.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Chen, M.-H., Deng, Z.-H., Liang, Q.-Z., Ding, L.-W., Tao, J.-L.
AUTHOR FULL NAMES: Chen, Meihua (55836853500); Deng, Zhihui (55229738400); Liang, Qizhen (56290270400); Ding, Liuwei (56290014000); Tao, Jingling (7202301185)
55836853500; 55229738400; 56290270400; 56290014000; 7202301185
Study on the association between the surface latent heat flux(SLHF)in Tengchong region with the earthquakes in Sichuan-Yunnan region
(2014) Dizhen Dizhi, 36 (2), pp. 422 - 433, Cited 2 times.
DOI: 10.3969/j.issn.0253-4967.2014.02.012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904767465&doi=10.3969%2Fj.issn.0253-4967.2014.02.012&partnerID=40&md5=199502b4e682e0d878379206e12acae3

AFFILIATIONS: Zhejiang Normal University, Jinhua, Zhejiang, China; Seismological Bureau of Guangdong Province, Guangzhou, Guangdong, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Domestic and foreign scholars found that SLHF anomaly occurred before some strong earthquakes in coastal area or in inland region with abundant water. The author noted that SLHF anomaly in some special tectonic position is not only associated with the strong earthquakes nearby but also with the strong earthquakes far away in the same tectonic belt. The dynamic variation rule of SLHF anomaly in the special tectonic position prior to earthquakes might reveal some trend of regional seismic activity and contribute to the research of mechanism of SLHF anomaly prior to earthquakes. Tengchong area in Yunnan Province is such a special tectonic position located in the south of the eastern Himalayan syntaxis and is one of the youngest volcanic regions on the Chinese mainland with frequent magmatic activity and strong hydrothermal activity. The earthquakes (M<inf>S</inf>≥6.4) since 2000 in Sichuan-Yunnan region(including the Yao'an M<inf>S</inf>6.5 earthquake in 2000, the Ning'er M<inf>S</inf>6.4 earthquake in 2007, the Wenchuan M<inf>S</inf> 8.0 earthquake in 2008, the M<inf>S</inf>7.0 Myanmar earthquake in 2011 and the Lushan M<inf>S</inf>7.0 earthquake in 2013)are selected as cases to study the variation characteristics of the SLHF in Tengchong region before and after the above earthquakes. It is found that significant SLHF anomalies occurred in Tengchong area not only before earthquakes happening in the vicinity but also earthquakes far away in the surroundings. The SLHF anomalies occurred mostly within one and half months before the earthquakes, except Wenchuan M<inf>S</inf> 8.0 earthquake. The SLHF anomalies occurred two months before Wenchuan earthquake, the earlier occurrence of the anomalies might be due to the relatively long distance between Wenchuan earthquake and Tengchong area. It is also found that the amplitude of anomaly is related to earthquake magnitude, the larger the magnitude of earthquake, the larger the amplitude of the anomalies. For example, the SLHF anomalies in Tengchong region prior to Burma M<inf>S</inf> 7 earthquake and Wenchuan M<inf>S</inf> 8.0 earthquake are very strong, far more than the reference maximum values, but the SLHF anomalies prior to Yao'an M<inf>S</inf> 6.5 earthquake and Ning'er M<inf>S</inf> 6.4 earthquake are relatively small. The sensitive response of SLHF in Tengchong region to the surrounding earthquakes on the one hand is related to the development of active faults and the present-day intensive crustal deformation; on the other hand, there are strong volcanic activities in Tengchong area, with springs widely developed and water heat exchanging quickly. So as a result, the SLHF of this region is sensitive to surrounding tectonic movement.
AUTHOR KEYWORDS: Association between SLHF anomaly and earthquakes; Earthquake thermal anomaly; Remote sensing; Surface latent heat flux; Tengchong volcano
INDEX KEYWORDS: Remote sensing; Tectonics; Volcanoes; Crustal deformations; Earthquake magnitudes; Hydrothermal activity; Sichuan-Yunnan region; Surface latent heat fluxes; Thermal anomalies; Variation characteristics; Volcanic activities; Earthquakes
REFERENCES: Acta Seismologica Sinica, (2000); 
Chen, Meihua, Probable surface latent heat flux anomalies before the 2010 Chile M s8.8 earthquake and its relationship to the variations of surface temperature, Acta Geophysica Sinica, 54, 7, pp. 1738-1744, (2011); 
Chen, Meihua, Primary study on the variation of surface thermal flux before and after the M s 5.7 earthquake of 2005 in Jiujiang, Jiangxi, Dizhen Dizhi, 29, 3, pp. 617-626, (2007); 
Chen, Meihua, Surface latent heat flux anomalies prior to the indonesia Mw9.0 earthquake of 2004, Chinese Science Bulletin, 51, 8, pp. 1010-1013, (2006); 
Science Technology Review, (2008); 
Acta Seismologica Sinica, (1995); 
South China Journal of Seismology, (2011); 
Qin, Kai, Surface latent heat flux anomalies before the MS 7.1 New Zealand earthquake 2010, Chinese Science Bulletin, 56, 31, pp. 3273-3280, (2011); 
Shangguan, Zhiguan, Geochemical evidence of the activity of the NW-trending fault at Rehai area, Tengchong, Yunnan Province, China, Dizhen Dizhi, 26, 1, pp. 46-51, (2004); 
Yan, Yan, Retrieving the latent heat flux of Wenchuan area of Sichuan province using a dualtemperature-difference method, Dizhen Dizhi, 30, 4, pp. 1085-1094, (2008)
PUBLISHER: State Seismology Administration
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chang, M., Tang, C., Zhang, D.-D., Ma, G.-C.
AUTHOR FULL NAMES: Chang, Ming (36727157900); Tang, Chuan (35932953300); Zhang, Dandan (55836838800); Ma, Guochao (56266812000)
36727157900; 35932953300; 55836838800; 56266812000
Debris flow susceptibility assessment using a probabilistic approach: A case study in the Longchi area, Sichuan province, China
(2014) Journal of Mountain Science, 11 (4), pp. 1001 - 1014, Cited 41 times.
DOI: 10.1007/s11629-013-2747-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904211218&doi=10.1007%2Fs11629-013-2747-9&partnerID=40&md5=d6bc93f34a73e818d8ea785866766688

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Longchi area with the city of Dujiangyan, in the Sichuan province of China, is composed of Permian stone and diorites and Triassic sandstones and mudstones intercalated with slates. An abundance of loose co-seismic materials were present on the slopes after the May 12, 2008 Wenchuan earthquake, which in later years served as source material for rainfall-induced debris flows or shallow landslides. A total of 48 debris flows, all triggered by heavy rainfall on 13th August 2010, are described in this paper. Field investigation, supported by remote sensing image interpretation, was conducted to interpret the co-seismic landslides in the debris flow gullies. Specific characteristics of the study area such as slope, aspect, elevation, channel gradient, lithology, and gully density were selected for the evaluation of debris flow susceptibility. A score was given to all the debris flow gullies based on the probability of debris flow occurrence for the selected factors. In order to get the contribution of the different factors, principal component analyses were applied. A comprehensive score was obtained for the 48 debris flow gullies which enabled us to make a susceptibility map for debris flows with three classes. Twenty-two gullies have a high susceptibility, twenty gullies show a moderate susceptibility and six gullies have a low susceptibility for debris flows. © 2014 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Debris flow; Grey correlation; Landslide; Probability; Susceptibility assessment
REFERENCES: Alexander, David E., Urban landslides, Progress in Physical Geography, 13, 2, pp. 157-189, (1989); 
Gansu Geology, (2008); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Chang, Fi John, Investigating the impact of the Chi-Chi earthquake on the occurrence of debris flows using artificial neural networks, Hydrological Processes, 23, 19, pp. 2728-2736, (2009); 
Chen, Hongey, Recent rainfall-induced landslides and debris flow in northern Taiwan, Geomorphology, 77, 1-2, pp. 112-125, (2006); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009); 
Guzzetti, Fausto, The rainfall intensity-duration control of shallow landslides and debris flows: An update, Landslides, 5, 1, pp. 3-17, (2008); 
Hürlimann, Marcel, Detailed debris flow hazard assessment in Andorra: A multidisciplinary approach, Geomorphology, 78, 3-4, pp. 359-372, (2006); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009)
PUBLISHER: Science Press shengtaixuebao@mail.rcees.ac.cn
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fang, R., Shi, C., Wang, G.X., Liu, J.N.
AUTHOR FULL NAMES: Fang, Rongxin (57193923274); Shi, Chuang (55577210500); Wang, Guangxing (55609386500); Liu, Jingnan (35226528800)
57193923274; 55577210500; 55609386500; 35226528800
Epicenter and magnitude of large earthquake determined from high-rate GPS observations: A case study of the 2008 M8.0 Wenchuan earthquake
(2014) Science China Earth Sciences, 57 (7), pp. 1645 - 1652, Cited 15 times.
DOI: 10.1007/s11430-013-4803-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903146396&doi=10.1007%2Fs11430-013-4803-2&partnerID=40&md5=21f0a67ca4ee30b17c1147131316df47

AFFILIATIONS: GNSS Research Center, Wuhan University, Wuhan, Hubei, China
ABSTRACT: For earthquake and tsunami early warning and emergency response, the earthquake epicenter and magnitude should be determined rapidly and correctly. Using high-rate GPS observations, we can readily obtain precise and high resolution displacement time series and the seismic waveforms during the earthquake. In this paper, a new algorithm is proposed for estimating the earthquake epicenter and magnitude with the seismic waveforms derived from high-rate GPS data during the earthquake. A case study of the 2008 Wenchuan earthquake is conducted from 1 Hz GPS data and the epicenter and magnitude are determined. Compared with the results issued by the China Seismological Bureau, the estimation error of the epicenter and the magnitude is about 12 km and 0.1 magnitude unit, respectively. It has shown that high-rate GPS could be a new tool feasible for estimating the earthquake epicenter and magnitude, independent of or combined with seismometers. © 2014 Science China Press and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: epicenter; high-rate GPS; magnitude; Wenchuan earthquake
INDEX KEYWORDS: Estimation; Global positioning system; Seismic waves; Seismographs; Waveform analysis; 2008 wenchuan earthquakes; Displacement time series; Earthquake and tsunamis; Earthquake epicenter; epicenter; High rate; magnitude; Wenchuan Earthquake; Earthquakes; algorithm; earthquake epicenter; earthquake magnitude; GPS; seismic method; seismograph; Sichuan earthquake 2008; waveform analysis; China; Sichuan; Wenchuan
REFERENCES: Allen, Richard M., Application of real-time GPS to earthquake early warning, Geophysical Research Letters, 38, 16, (2011); 
Avallone, Antonio, Very high rate (10 Hz) GPS seismology for moderate-magnitude earthquakes: The case of the Mw 6.3 L'Aquila (central Italy) event, Journal of Geophysical Research: Solid Earth, 116, 2, (2011); 
Bilich, Andria L., GPS seismology: Application to the 2002 Mw 7.9 Denali fault earthquake, Bulletin of the Seismological Society of America, 98, 2, pp. 593-606, (2008); 
Blewitt, Geoffrey, Rapid determination of earthquake magnitude using GPS for tsunami warning systems, Geophysical Research Letters, 33, 11, (2006); 
Bock, Yehuda, Real-time strong-motion broadband displacements from collocated GPS and accelerometers, Bulletin of the Seismological Society of America, 101, 6, pp. 2904-2925, (2011); 
Elosegui, Pedro, Accuracy of high-rate GPS for seismology, Geophysical Research Letters, 33, 11, (2006); 
Fang, Rongxin, Real-time GNSS seismometer and its accuracy, Acta Geophysica Sinica, 56, 2, pp. 450-458, (2013); 
Bull Seism Soc Am, (1945); 
Bull Seismol Soc Am, (1945); 
Hanks, Thomas C., A moment magnitude scale, Journal of Geophysical Research: Solid Earth, 84, B5, pp. 2348-2350, (1979)
PUBLISHER: Science in China Press csb@scichina.com
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, J., Chen, P., Liu, Y., Wang, J.
AUTHOR FULL NAMES: Wu, Jian (56913488000); Chen, Peng (59040335100); Liu, Yaolin Lin (55971551900); Wang, Jing (59066095000)
56913488000; 59040335100; 55971551900; 59066095000
The method of earthquake landslide information extraction with high-resolution remote sensing
(2014) Proceedings of SPIE - The International Society for Optical Engineering, 9158, art. no. 915805, Cited 0 times.
DOI: 10.1117/12.2063691
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902255561&doi=10.1117%2F12.2063691&partnerID=40&md5=3be6859519f7bf8d985bd7481806795b

AFFILIATIONS: Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, China; School of Resource and Environmental Sciences, Wuhan University, Wuhan, Hubei, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China
ABSTRACT: As a kind of secondary geological disaster caused by strong earthquake, the earthquake-induced landslide has drawn much attention in the world due to the severe hazard. The high-resolution remote sensing, as a new technology for investigation and monitoring, has been widely applied in landslide susceptibility and hazard mapping. The Ms 8.0 Wenchuan earthquake, occurred on 12 May 2008, caused many buildings collapse and half million people be injured. Meanwhile, damage caused by earthquake-induced landslides, collapse and debris flow became the major part of total losses. By analyzing the property of the Zipingpu landslide occurred in the Wenchuan earthquake, the present study advanced a quick-and-effective way for landslide extraction based on NDVI and slope information, and the results were validated with pixel-oriented and object-oriented methods. The main advantage of the idea lies in the fact that it doesn't need much professional knowledge and data such as crustal movement, geological structure, fractured zone, etc. and the researchers can provide the landslide monitoring information for earthquake relief as soon as possible. In pixel-oriented way, the NDVI-differential image as well as slope image was analyzed and segmented to extract the landslide information. When it comes to object-oriented method, the multi-scale segmentation algorithm was applied in order to build up three-layer hierarchy. The spectral, textural, shape, location and contextual information of individual object classes, and GLCM (Grey Level Concurrence Matrix homogeneity, shape index etc. were extracted and used to establish the fuzzy decision rule system of each layer for earthquake landslide extraction. Comparison of the results generated from the two methods, showed that the object-oriented method could successfully avoid the phenomenon of NDVI-differential bright noise caused by the spectral diversity of high-resolution remote sensing data and achieved better result with an overall accuracy of 92.16%, while of the pixel-oriented one could only get 71.32%. As the high-resolution remote sensing has been widely utilized in many fields, the object-oriented image analytical technique will have an extensive application. © 2014 Copyright SPIE.
AUTHOR KEYWORDS: Earthquake landslide; Fuzzy classification; Multi-resolution segmentation; Object-oriented; Pixel-oriented
INDEX KEYWORDS: Earthquakes; Hazards; Image segmentation; Pixels; Remote sensing; Contextual information; Earthquake-induced landslides; Fuzzy classification; High resolution remote sensing; Landslide susceptibility; Multiscale segmentation; Object oriented; Pixel-oriented; Landslides
REFERENCES: Great Wenchuan Earthquake Seismology and Landslide Hazards, (2009); 
Nichol, Janet Elizabeth, Application of high-resolution stereo satellite images to detailed landslide hazard assessment, Geomorphology, 76, 1-2, pp. 68-75, (2006); 
Metternicht, Graciela I., Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, 98, 2-3, pp. 284-303, (2005); 
Kilburn, Christopher R.J., Major risk from rapid, large-volume landslides in Europe (EU Project RUNOUT), Geomorphology, 54, 1-2, pp. 3-9, (2003); 
Perotto-Baldivieso, Humberto L., GIS-based spatial analysis and modeling for landslide hazard assessment in steeplands, southern Honduras, Agriculture, Ecosystems and Environment, 103, 1, pp. 165-176, (2004); 
Pradhan, Biswajeet K., Estimation of stress and its use in evaluation of landslide prone regions using remote sensing data, Advances in Space Research, 37, 4, pp. 698-709, (2006); 
Zhou, Guanhua, RS/GIS-based regional evaluation of landslide hazard risk: A case study of Guangchang County, Jiangxi Province, Journal of Natural Disasters, 17, 6, pp. 68-72, (2008); 
Xu, Chong, GIS-based landslide susceptibility assessment using analytical hierarchy process in wenchuan earthquake region, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, SUPPL. 2, pp. 3978-3985, (2009); 
Proceedings of the 2nd International Symposium on Operationalization of Remote Sensing, (1999); 
Application on Investigation and Evaluation of Geohazard by High Precision Satellite Remote Sensing Technique, (2007)
PUBLISHER: SPIE spie@spie.org
SPONSORS: Asian Association on Remote Sensing (AARS), et al., International Society for Digital Earth (ISDE), National Geomatics Center of China, National Remote Sensing Center of China, The Society of Photo-Optical Instrumentation Engineers (SPIE)
CONFERENCE NAME: 18th National Symposium on Remote Sensing of China: Remote Sensing of the Environment
CONFERENCE DATE: 2012-10-20 through 2012-10-23
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, P., Wu, J., Liu, Y., Wang, J.
AUTHOR FULL NAMES: Chen, Peng (59040335100); Wu, Jian (56913488000); Liu, Yaolin Lin (55971551900); Wang, Jing (59066095000)
59040335100; 56913488000; 55971551900; 59066095000
Extraction method for earthquake-collapsed building information based on high-resolution remote sensing
(2014) IOP Conference Series: Earth and Environmental Science, 17 (1), art. no. 012096, Cited 3 times.
DOI: 10.1088/1755-1315/17/1/012096
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902207942&doi=10.1088%2F1755-1315%2F17%2F1%2F012096&partnerID=40&md5=cd28cc0fd643b9bd5e65d759475a3bc6

AFFILIATIONS: Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, China; School of Resource and Environmental Sciences, Wuhan University, Wuhan, Hubei, China; Key Laboratory of Land Use, China Land Surveying and Planning Institute, Beijing, China
ABSTRACT: At present, the extraction of earthquake disaster information from remote sensing data relies on visual interpretation. However, this technique cannot effectively and quickly obtain precise and efficient information for earthquake relief and emergency management. Collapsed buildings in the town of Zipingpu after the Wenchuan earthquake were used as a case study to validate two kinds of rapid extraction methods for earthquake-collapsed building information based on pixel-oriented and object-oriented theories. The pixel-oriented method is based on multi-layer regional segments that embody the core layers and segments of the object-oriented method. The key idea is to mask layer by layer all image information, including that on the collapsed buildings. Compared with traditional techniques, the pixel-oriented method is innovative because it allows considerably rapid computer processing. As for the object-oriented method, a multi-scale segment algorithm was applied to build a three-layer hierarchy. By analyzing the spectrum, texture, shape, location, and context of individual object classes in different layers, the fuzzy determined rule system was established for the extraction of earthquake-collapsed building information. We compared the two sets of results using three variables: precision assessment, visual effect, and principle. Both methods can extract earthquake-collapsed building information quickly and accurately. The object-oriented method successfully overcomes the pepper salt noise caused by the spectral diversity of high-resolution remote sensing data and solves the problem of same object, different spectrums and that of same spectrum, different objects. With an overall accuracy of 90.38%, the method achieves more scientific and accurate results compared with the pixel-oriented method (76.84%). The object-oriented image analysis method can be extensively applied in the extraction of earthquake disaster information based on high-resolution remote sensing.
INDEX KEYWORDS: Buildings; Disasters; Extraction; Pixels; Remote sensing; Risk management; Earthquake disaster informations; Emergency management; High resolution remote sensing; Object oriented method; Object-oriented image analysis; Precision assessment; Traditional techniques; Visual interpretation; Earthquakes; collapse; computer simulation; data set; disaster management; image analysis; remote sensing; resolution; Sichuan earthquake 2008; China; Sichuan; Zipingpu Reservoir
REFERENCES: Proceedings of the 20th Asian Conference on Remote Sensing, (1999); 
Turker, Mustafa, Detection of collapsed buildings caused by the 1999 Izmit, Turkey earthquake through digital analysis of post-event aerial photographs, International Journal of Remote Sensing, 25, 21, pp. 4701-4714, (2004); 
Proceedings of the 8th International Conference on Structural Safety and Reliability, (2001); 
Proceedings of the 7th National US Conference on Earthquake Engineering, (2002); 
Earth Science Frontiers, (2003); 
Wang, Xiaoqing, Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 174-181, (2009); 
Geography Geo Information Sci, (2012); 
Proceedings of the 2nd International Symposium on Operationalization of Remote Sensing, (1999); 
Proceedings of the Ismm2002, (2002); 
Ecognition 8 Developer User S Guide, (2010)
PUBLISHER: Institute of Physics Publishing custserv@iop.org
SPONSORS: LDE, LIESMARS, NRSCC, REIS
CONFERENCE NAME: 35th International Symposium on Remote Sensing of Environment, ISRSE 2013
CONFERENCE DATE: 2013-04-22 through 2013-04-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Chen, Y., Wang, Q.
AUTHOR FULL NAMES: Chen, Yu (56200332700); Wang, Qinjun (16205534800)
56200332700; 16205534800
A GIS-based statistical model for rapid landslide susceptibility mapping in the Beichuan-Pingwu area, Sichuan, China
(2014) IOP Conference Series: Earth and Environmental Science, 17 (1), art. no. 012085, Cited 0 times.
DOI: 10.1088/1755-1315/17/1/012085
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902169974&doi=10.1088%2F1755-1315%2F17%2F1%2F012085&partnerID=40&md5=87f272a4bdcb088cca9a080a8ba58dbe

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The 2008 Wenchuan earthquake, with a magnitude of Mw 8.0, induced numerous landslides. Remote sensing planes were sent out to take high resolution aerial photographs, from which the geologic hazards could be instantly interpreted. However, aerial images covering all of the study area could not be obtained in a short time because of the limitations of the planes and the influence of weather conditions. This studyestablishes a statistical model based on the landslide interpretation results of one photographic strip inside the Beichuan-Pingwu area. It has strong applicability and can be applied to other places without such data. Finally, we produced a landslide susceptibility map, which providesscientific support for the instant evaluation of disaster information and post-disaster reconstruction.
INDEX KEYWORDS: Disasters; Geographic information systems; Remote sensing; 2008 wenchuan earthquakes; Aerial Photographs; Disaster Information; Geologic hazards; Landslide susceptibility; Landslide susceptibility mapping; Post-disaster reconstruction; Statistical modeling; Landslides; aerial survey; GIS; landslide; mapping; numerical model; statistical analysis; China; Sichuan
REFERENCES: Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Ablay, Giray J., Evolution of the north flank of Tenerife by recurrent giant landslides, Journal of Volcanology and Geothermal Research, 103, 1-4, pp. 135-159, (2000); 
Wan, Yongshang Shan, Shear strength of soils containing amorphous clay-size materials in a slow-moving landslide, Engineering Geology, 65, 4, pp. 293-303, (2002); 
HONG, Yang, Use of satellite remote sensing data in the mapping of global landslide susceptibility, Natural Hazards, 43, 2, pp. 245-256, (2007); 
Saro, Lee M., Statistical analysis of landslide susceptibility at Yongin, Korea, Environmental Geology, 40, 9, pp. 1095-1113, (2001); 
Wang, Jian, GIS-based landslide hazard zonation model and its application, Procedia Earth and Planetary Science, 1, 1, pp. 1198-1204, (2009); 
Davis, John C., Two models for evaluating landslide hazards, Computers and Geosciences, 32, 8, pp. 1120-1127, (2006); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005)
PUBLISHER: Institute of Physics Publishing custserv@iop.org
SPONSORS: LDE, LIESMARS, NRSCC, REIS
CONFERENCE NAME: 35th International Symposium on Remote Sensing of Environment, ISRSE 2013
CONFERENCE DATE: 2013-04-22 through 2013-04-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Wang, Q., Li, M.X., Chen, Y., Bi, J., Lin, Q.
AUTHOR FULL NAMES: Wang, Qinjun (16205534800); Li, Mingxiao (57199160041); Chen, Yu (56200332700); Bi, Jiantao (7103093390); Lin, Qinzhong (7401703690)
16205534800; 57199160041; 56200332700; 7103093390; 7401703690
A method for geological hazard extraction using high-resolution remote sensing
(2014) IOP Conference Series: Earth and Environmental Science, 17 (1), art. no. 012172, Cited 0 times.
DOI: 10.1088/1755-1315/17/1/012172
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902151418&doi=10.1088%2F1755-1315%2F17%2F1%2F012172&partnerID=40&md5=46b6142a9ace87e28be3027530b75d2f

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China; China Earthquake Networks Center, Beijing, China
ABSTRACT: Taking Yingxiu, the epicentre of the Wenchuan earthquake, as the study area, a method for geological disaster extraction using high-resolution remote sensing imagery was proposed in this study. A high-resolution Digital Elevation Model (DEM) was used to create mask imagery to remove interfering factors such as buildings and water at low altitudes. Then, the mask imagery was diced into several small parts to reduce the large images' inconsistency, and they were used as the sources to be classified. After that, vector conversion was done on the classified imagery in ArcGIS. Finally, to ensure accuracy, other interfering factors such as buildings at high altitudes, bare land, and land covered by little vegetation were removed manually. Because the method can extract geological hazards in a short time, it is of great importance for decision-makers and rescuers who need to know the degree of damage in the disaster area, especially within 72 hours after an earthquake. Therefore, the method will play an important role in decision making, rescue, and disaster response planning.
INDEX KEYWORDS: Decision making; Earthquakes; Extraction; Hazards; Remote sensing; Decision makers; Degree of damages; Digital elevation model; Disaster response; Geological disaster; Geological hazards; High resolution remote sensing; Wenchuan Earthquake; Disasters; decision making; digital elevation model; GIS; hazard assessment; remote sensing; resolution; Sichuan earthquake 2008; vegetation cover
REFERENCES: Journal of Remote Sensing, (2008); 
Journal of Remote Sensing, (2009); 
Xibei Seismology Journal, (2008); 
Earth Science Frontiers, (2003); 
Wang, Xiaoqing, Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 174-181, (2009); 
Cai, Ziying, Ground-based measurements of aerosol optical properties in Zhengzhou, China, Zhongguo Huanjing Kexue/China Environmental Science, 29, 1, pp. 31-35, (2009); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Wang, Xiuying, Characteristics of landslides induced by Wenchuan MS 8.0 Earthquake and preliminary analysis of their relations with ground motion parameters, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 31, 9, pp. 1378-1383, (2009); 
Journal of Natural Disasters, (1998); 
Zhao, Xiang, Extraction of landslide/debris flow information based on multi-source remote sensing data, Journal of Natural Disasters, 18, 6, pp. 29-32, (2009)
PUBLISHER: Institute of Physics Publishing custserv@iop.org
SPONSORS: LDE, LIESMARS, NRSCC, REIS
CONFERENCE NAME: 35th International Symposium on Remote Sensing of Environment, ISRSE 2013
CONFERENCE DATE: 2013-04-22 through 2013-04-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Zhang, H., Chi, T., Fan, J., Liu, T., Wang, W., Yang, L., Zhao, Y., Shao, J., Yao, X.
AUTHOR FULL NAMES: Zhang, Huaizhen (56201160600); Chi, Titanhe (7005693588); Fan, Jianrong (8727506000); Liu, Tianyue (56199930600); Wang, Wei (57233345600); Yang, Lina (55732979200); Zhao, Yuan (57206609040); Shao, Jing (56506166500); Yao, Xiaojing (56510788700)
56201160600; 7005693588; 8727506000; 56199930600; 57233345600; 55732979200; 57206609040; 56506166500; 56510788700
Debris-flows scale predictions based on basin spatial parameters calculated from Remote Sensing images in Wenchuan earthquake area
(2014) IOP Conference Series: Earth and Environmental Science, 17 (1), art. no. 012091, Cited 2 times.
DOI: 10.1088/1755-1315/17/1/012091
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902135937&doi=10.1088%2F1755-1315%2F17%2F1%2F012091&partnerID=40&md5=c74548fef0cd8370bfc11283ccdb91be

AFFILIATIONS: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Debris flow is a common hazard in the Wenchuan earthquake area. Collapse and Landslide Regions (CLR), caused by earthquakes, could be located from Remote Sensing images. CLR are the direct material source regions for debris flow. The Spatial Distribution of Collapse and Landslide Regions (SDCLR) strongly impact debris-flow formation. In order to depict SDCLR, we referred to Strahler's Hypsometric analysis method and developed 3 functional models to depict SDCLR quantitatively. These models mainly depict SDCLR relative to altitude, basin mouth and main gullies of debris flow. We used the integral of functions as the spatial parameters of SDCLR and these parameters were employed during the process of debris-flows scale predictions. Grouping-occurring debris-flows triggered by the rainstorm, which occurred on September 24th 2008 in Beichuan County, Sichuan province China, were selected to build the empirical equations for debris-flows scale predictions. Given the existing data, only debris-flows runout zone parameters (Max. runout distance L and Lateral width B) were estimated in this paper. The results indicate that the predicted results were more accurate when the spatial parameters were used. Accordingly, we suggest spatial parameters of SDCLR should be considered in the process of debris-flows scale prediction and proposed several strategies to prevent debris flow in the future.
INDEX KEYWORDS: Earthquakes; Forecasting; Image reconstruction; Landslides; Remote sensing; Storms; Empirical equations; Functional model; Material sources; Remote sensing images; Scale prediction; Sichuan province; Spatial parameters; Wenchuan Earthquake; Debris; debris flow; landslide; numerical model; parameterization; prediction; remote sensing; Sichuan earthquake 2008; spatial analysis; China; Sichuan
REFERENCES: Iverson, Richard M., The physics of debris flows, Reviews of Geophysics, 35, 3, pp. 245-296, (1997); 
Rickenman, Dieter, Empirical relationships for debris flows, Natural Hazards, 19, 1, pp. 47-77, (1999); 
Journal of Mountain Science, (2009); 
Cui, Peng, Characteristics and countermeasures of debris flow in Wenchuan area after the earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 10-19, (2010); 
Journal of Engineering Geology, (2010); 
J Mountain Science, (2012); 
Journal of Engineering Geology, (2008); 
Tang, Chuan, An empirical-statistical model for predicting debris-flow runout zones in the Wenchuan earthquake area, Quaternary International, 250, pp. 63-73, (2012); 
Strahler, Arthur N., Hypsometric (area-altitude) analysis of erosional topography, Bulletin of the Geological Society of America, 63, 11, pp. 1117-1142, (1952); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008)
PUBLISHER: Institute of Physics Publishing custserv@iop.org
SPONSORS: LDE, LIESMARS, NRSCC, REIS
CONFERENCE NAME: 35th International Symposium on Remote Sensing of Environment, ISRSE 2013
CONFERENCE DATE: 2013-04-22 through 2013-04-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Xu, C., Xiwei, X., Yao, X., Dai, F.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Yao, Xin (55723721600); Dai, Fuchu (7102055666)
35184309900; 8246843900; 55723721600; 7102055666
Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis
(2014) Landslides, 11 (3), pp. 441 - 461, Cited 596 times.
DOI: 10.1007/s10346-013-0404-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901986027&doi=10.1007%2Fs10346-013-0404-6&partnerID=40&md5=0aa45f985388f6ccb02671d9c242d808

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, China Earthquake Administration, Beijing, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The May 12, 2008 Wenchuan earthquake of China (Mw 7.9 or Ms 8.0) triggered hundreds of thousands of landslides. Mapping such a large number of landslides is a major task, considering the large size of the affected area and the availability of pre- and post-earthquake remote sensing images. This paper compares three (nearly) complete landslide inventories that were compiled from visual image interpretation. The three inventories differ in the manner in which the landslides are represented, either as polygons, centroid points, or top points. Landslides in the three inventories use one-to-one correspondence. Each of the three inventories includes a large proportion of the 197,481 landslides triggered by the earthquake. These landslides were delineated as individual solid polygons and points using visual interpretation of high-resolution aerial photographs and satellite images acquired following the earthquake and verified by selected field checking throughout a broad area of approximately 110,000 km2. These landslides cover a total area of approximately 1,160 km2. Based on the inventories of landslide polygons and landslide centroid points, two types of density maps were constructed. Correlations of landslide occurrence with seismic, geologic, and topographic parameters were analyzed using the three landslide inventories. Statistical analysis of their spatial distribution was performed using both the landslide area percentage (LAP), defined as the percentage of the area affected by the landslides and the landslide number density (LND), defined as the number of landslides per square kilometer. There are two types of LNDs: the LND-centroid (based on the centroid point of the landslide) and the LND-top (based on the top point of the landslide). We used the three indexes to determine how the occurrence of the landslides correlates with elevation, slope angle, slope aspect, slope position, slope curvature, lithology, distance from the epicenter, seismic intensity, distance from the Yingxiu-Beichuan surface fault rupture, peak ground acceleration (PGA), and coseismic surface displacements (including horizontal, vertical, and total displacements). Both the LAP and the two types of LND values were observed to have continuous positive or negative correlations with the slope angle, slope curvature, distance from the epicenter and from the Yingxiu-Beichuan surface fault rupture, seismic intensity, and coseismic surface displacement. In addition, the highest values of the LAP and LND values appear at ranges from 1,200 to 3,000 m in elevation. Moreover, the landslides have preferred orientations, dominated by the eastern, southeastern, and southern directions. In addition, the sandstone, siltstone (Z), and granitic rocks experienced more concentrated landslides. No obvious correlations were observed between the LAP and LND values and slope position. Finally, we studied the orders of eight earthquake-triggered landslide impact factor effect on landslide occurrence. Highlights: The 197,481 landslides triggered by the 2008 Wenchuan earthquake were delineated. Three landslide inventories were constructed: polygon, centroid, and top point inventories. The landslides were spatially analyzed with topographic, lithology, and seismic parameters. © 2013 The Author(s).
AUTHOR KEYWORDS: Inventory; Landslide area percentage; Landslide number density; Landslides; Spatial distribution; Statistical analysis; The 2008 Wenchuan earthquake
INDEX KEYWORDS: Earthquakes; Faulting; Geometry; Image reconstruction; Lithology; Spatial distribution; Statistical methods; Surface measurement; 2008 wenchuan earthquakes; Earthquake-triggered landslides; Inventory; Landslide areas; Number density; Peak ground acceleration; Preferred orientations; Visual interpretation; Landslides; correlation; geotechnical mapping; image analysis; landslide; parameterization; satellite imagery; spatial distribution; statistical analysis; China; Sichuan; Wenchuan
REFERENCES: Alfaro, Pedro, Widespread landslides induced by the Mw 5.1 earthquake of 11 May 2011 in Lorca, SE Spain, Engineering Geology, 137-138, pp. 40-52, (2012); 
Acta Geologica Sinica, (2009); 
Chigira, Masahiro, Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan, Engineering Geology, 82, 4, pp. 202-221, (2006); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Collins, Brian D., Spatial distribution of landslides triggered from the 2007 Niigata Chuetsu-Oki Japan Earthquake, Engineering Geology, 127, pp. 14-26, (2012); 
Dadson, Simon J., Links between erosion, runoff variability and seismicity in the Taiwan orogen, Nature, 426, 6967, pp. 648-651, (2003); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dadson, Simon J., Hyperpycnal river flows from an active mountain belt, Journal of Geophysical Research: Earth Surface, 110, 4, (2005); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Das, Josodhir D., Satellite data in a rapid analysis of Kashmir earthquake (October 2005) triggered landslide pattern and river water turbidity in and around the epicentral region, International Journal of Remote Sensing, 28, 8, pp. 1835-1842, (2007)
PUBLISHER: Springer Verlag service@springer.de
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; HYBRID GOLD OPEN ACCESS

Li, N., Wang, R., Liu, Y., Du, K., Chen, J., Deng, Y.
AUTHOR FULL NAMES: Li, Ning (56602012300); Wang, Robert Yu (7405336715); Liu, Yabo (35248613900); Du, Kangning (56177876200); Chen, Jiaqi (59973544700); Deng, Yunkai (8984596000)
56602012300; 7405336715; 35248613900; 56177876200; 59973544700; 8984596000
Robust river boundaries extraction of dammed lakes in mountain areas after Wenchuan Earthquake from high resolution SAR images combining local connectivity and ACM
(2014) ISPRS Journal of Photogrammetry and Remote Sensing, 94, pp. 91 - 101, Cited 38 times.
DOI: 10.1016/j.isprsjprs.2014.04.020
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901375892&doi=10.1016%2Fj.isprsjprs.2014.04.020&partnerID=40&md5=b1dc6cd04f51500d2ed984662eb39478

AFFILIATIONS: Department of Space Microwave Remote Sensing System, Institute of Electronics Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; College of Computer and Information, Hohai University, Nanjing, Jiangsu, China
ABSTRACT: River boundaries extraction from SAR imagery is valuable for flood monitoring and damage assessment. Several rivers, parts of which include dammed lakes caused by landslides and rock avalanches triggered by the 2008 Wenchuan Earthquake, were taken as a case study for robust extraction. In this paper, a novel state-of-the-art approach for automated river boundaries extraction using high resolution synthetic aperture radar (SAR) intensity imagery is presented. The key of our approach lies in the combined usage of local connectivity feature of the river and a region-based active contours model (ACM) in a variational level set framework to differentiate between river and the background. First, sub-patched intensity thresholding segmentation is applied to SAR imagery. Pixels with intensities below the threshold are selected as potential river pixels while the others are potential background pixels. Second, potential river pixels are divided into several connected regions, considering that the river is a big connected region, only relatively bigger regions with similar contrast value are retained as the regions of interest (ROI) while others are noise due to pixel-level decision approach in the first step or shadows due to mountains terrain. Third, the ROI and their contours are regarded as local region and the initial contours to refine the river boundaries, which are used to reduce the scene complexity of ACM and its sensitivity to initial situation, respectively. A novel ACM driven by local image fitting (LIF) energy is presented and used for river boundaries extraction for the first time, which is not only robust against inhomogeneity widely spread in SAR imagery but also can work with efficiency without the need of re-initialization during iteration compared to traditional ACM. The proposed approach was tested on numerous high resolution airborne SAR images containing connected rivers or dammed lakes obtained by Chinese domestic radar system after Wenchuan Earthquake. For the overall dataset, the average commission error, omission error and root mean squared error were 6.5%, 3.3%, and 0.51, respectively. The average computational time for 4000 by 4000 image size was 21. min using a PC-based MATLAB platform. Our experimental results demonstrate that the proposed approach is robust and effective. © 2014 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS).
AUTHOR KEYWORDS: ACM; Airborne SAR imagery; Dammed lakes; Local connectivity; River boundaries extraction
INDEX KEYWORDS: Damage detection; Earthquakes; Extraction; Face recognition; Image segmentation; Lakes; Landforms; Pixels; Radar systems; Rivers; 2008 wenchuan earthquakes; ACM; Airborne SAR; High resolution synthetic aperture radar; Local connectivity; Region based active contours; State-of-the-art approach; Thresholding segmentation; Synthetic aperture radar; connectivity; error analysis; image resolution; lake; mountain region; pixel; radar imagery; river system; Sichuan earthquake 2008; synthetic aperture radar; China; Sichuan; Wenchuan
REFERENCES: Brink, A. D., Minimum cross-entropy threshold selection, Pattern Recognition, 29, 1, pp. 179-188, (1996); 
Cao, Fang, Extraction of water surfaces in simulated Ka-band SAR images of KaRIn on SWOT, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3562-3565, (2011); 
Caselles, Vicente, Geodesic Active Contours, International Journal of Computer Vision, 22, 1, pp. 61-79, (1997); 
Chan, Tony Fan Cheong, Active contours without edges, IEEE Transactions on Image Processing, 10, 2, pp. 266-277, (2001); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Grosdidier, Samuel, River network detection on simulated swot images based on curvilinear denoising and morphological detection, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 5454-5457, (2012); 
Haralick, Robert Martin, Image segmentation techniques., Computer Vision, Graphics, and Image Processing, 29, 1, pp. 100-132, (1985); 
Horritt, Matthew S., Waterline mapping in flooded vegetation from airborne SAR imagery, Remote Sensing of Environment, 85, 3, pp. 271-281, (2003); 
Karantzalos, Konstantinos G., Automatic detection and tracking of oil spills in SAR imagery with level set segmentation, International Journal of Remote Sensing, 29, 21, pp. 6281-6296, (2008); 
Kittler, Josef V., Minimum error thresholding, Pattern Recognition, 19, 1, pp. 41-47, (1986)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

2014 2nd International Forum on Mechanical and Material Engineering, IFMME 2014
(2014) Advanced Materials Research, 915-916, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901265733&partnerID=40&md5=99084966c9e34a705950e41b51c5ab1c

ABSTRACT: The proceedings contain 301 papers. The special focus in this conference is on Mechanical and Material Engineering. The topics include: analysis and experiment study of continuous beam arch composite bridge; analysis and simulation of UAV aircraft flight dynamics; dynamic analysis and experimental research of laser cutting machines; dynamic research of a kind of Morse CVT input mechanism and parameters optimization; dynamics analysis of vertical transferring frame of garbage container; edge resonances of circular cylinders; experimental analysis of dynamic characteristic for automatic tensioner; impact of the wenchuan earthquake on construction index using an EMD-based event analysis method; modal analysis of crankshaft under multi-speed; research on automobile coupled vibration between transmission shaft and drive axle gears; study on combination method of stochastic load processes; transfer function development of uniaxial horizontal centrifugal shaking table; two methods for edge reflection problems in circular cylinders; vibration and noise analysis for a motor of pure electric vehicle; dynamic response analysis of composite soil nailed wall under earthquake; study on the ground response analysis for stiff soil; CFD simulation study of gas-liquid flow regimes in inclined wellbore; construction of Fo Zhao Gui Dan intercity bridge project in guang zhou; crack analysis of bridge piers of a rail transit line in Guangzhou City; finite element analysis and research of engine connecting rod; finite element simulation analysis on space KX-joint; initial buckling of compressed rectangular panels with variable stiffener sizes; study on the relationship between the diameter and the stress concentration; numerical research on internal flow induced noise of rotor oil pump; research on micro-pool drill and its drag reduction effect; study of friction lubrication characteristics research for CVT fluids in field test; the fault analysis and research of turbine generator sliding bearing oil film instability; a new method to quickly optimize the thickness of multi-holes plate; an assembly prediction model based on GA-BP neural network; design and optimization of the flywheel compressor based on solid works and fluent; design of electrically controlled movable vane regulation system of axial flow fan; optimal design of conductor clamps based on abaqus; research on the arc-teeth synchronous belt's tooth load distribution caused by the machining error; the design and kinematics analysis of an underactuated cable-truss mechanism; the design method of major parameters for built-up columns; the HST load feedback automatic speed regulating device design for combine harvester; the study of arc teethed automotive synchronous belt's transmission stability; truss optimization based on the evolutionary structural optimization; wind turbine tower climbing system design; flexible manufacturing system CNC and the integration of SmarTeam; research on CISSCAx system of suitable for flexible manufacturing mechanical products; the performance calculation method of fouled axial flow compressor based on the stage stacking method; finite element analysis of the chassis for sugarcane leaf cutting off returning to field machinery; a pulsed diaphragm piezoelectric pump using centrifugal force; error modeling analysis of face-gear NC grinding machine; estimation of failure probability for bearing and its applications in the case of zero-failure data; process study for forming a precise spline; development of ndfeb permanent magnet generator; the design of vertical seat frame; experimental research of the nozzles; the structure design of product equipment for the rigid PVC crusting-foam plate; line beam shaper for intra-oral scanning device; beam shaping technology for high power diode laser source; functional availability modelling of CNC machine tools; modeling and simulation of convenience food sorting system; position sensorless control of brushless DC motor; strategy analysis of override-control for drum height of shearers; the research of ASR strategy for the spindle inverter control in CNC machine tool; ABS sliding mode variable structure control based on index reaching law; impact on automotive body styling dust pollution; research and improvement of the keep-right-except-to-pass rule; research on the vehicles queuing based on traffic accidents; kinematics analysis of palletizing robot; research on design of industrial robot; broadband microwave transmission achieved by using engineered sandwich materials; cyclic pulse and chaos in an erbium doped fiber laser; study of chemical control synthesis on aluminum salt flame retardants powders; the application of CFZ-Si monocrystal material in photovoltaic field; generation review on the production line development of foam glass at home and abroad; effect of packaging materials on the reliability of LED modules under high temperature aging test; fiber materials AC impedance spectroscopy and its application; making non-dendritic structure via modified cooling slope technique; study of identifying the banded structure of 8620 steel bars; the control of carbon content in sintering process of tungsten steel; numerical and experimental investigations on SGMF of GH3044 superalloy tube; experimental study on the mechanical properties of rubber concrete; investigation on microwave property of Fe/Co mixed powders; performance of emulsified asphalt full thickness cold recycling subgrade materials; ring-opening polymerization of lactide using aluminum salen-type initiators; static analysis of composite laminate wind turbine with different lamination methods; structure design and manufacturing of the composite blade for the icing wind tunnel; study on fiber reinforced composite materials with wushu cultural heritage; the mechanical properties and thermodynamic study on polypropylene/talc composites; theory analysis on chloride permeation of unsaturated concrete in subsea tunnel; application of reactive compatibilizer in high performance polymer alloy; effect of carbon nanotubes on mechanical properties of cement composites; experiment investigation on mechanical property of glass fiber reinforced concrete; inhomogeneous chemical composition of semi-continuously casted ZK60A billet; a parametric investigation on the neo-hookean material constant; alkali pre-treatment dyeing technology for hemp/cotton/polyester knitted fabric; study on processing technology of oil-tea-cake on acid dye neutral red wastewater; synthesis and properties of novel cashew-based sulfonate Gemini surfactant; TEOS hydrolysis method synthesize nano silica and biocompatibility research; analyses of flow field and heat exchange about limestone grain in the preheater; influence of sieve structural parameters on sieving of shelled buckwheat; a BP-ANN based surrogate modeling for predicting engineering analysis of forging press; effects of feed angle on Mannesmann piercing in drill steel production; five-axis machining method of complicated curved surface; fracture of the leads of integrated circuits with TO package; high-speed cutting machining simulation of aero engine casing hole; optimization time for bending extruded aluminum profile; thermal stress analysis of the die during high pressure casting; research of the finishing needle automatic processing based on the labview; organic intercalation of kaolinite in coal bearing strata; the effects of different depressants on oxidised copper ores flotation; design printable pressure sensor based on 3dp fabrication; pattern recognition controller based on fuzzy neural network; PSPICE simulation of IGCT and its inverter circuit; research on a novel balance transformer with asymmetrical windings; the one-step ADI-FDTD for periodic structures and its stability; the top loading antenna with fractal photonic crystal used in TD-LTE system; design of a functional signal generator based on MAX038 and microcontroller; GPS positioning system design based on micro control unit; multi-CPU parallel computing system with mixed modes; the optimal control method of impulse response in prosthetic leg; a cooperative positioning scheme based on extended kalman filter for curve warning systems; a hybrid approach for stripe noise removal in frequency domain; heat flow calculation based on seismic data; hysteresis modeling of soft magnetic materials using LabVIEW; lyapunov-index application and time-frequency analysis in medical EEG; Multifractal-based texture analysis for SAR images; rolling element bearing diagnosis based on signal reconstruction from edited cepstrum; structure analysis of volcanic rock based on the texture feature in imaging logging; data visualization measurement in location-based service; books rank with modified pagerank algorithm; fault diagnosis method based on KPCA and selective neural network ensemble; the primitive exponent of a class of special nonnegative matrix pairs; the triangle network based precise correction method and its algorithm; a new intrusion detection method based on rough sets for network security; boost keywords conversion of search engine; constructing elliptic curves over Ramanujan's class invariants; intelligent path analysis system about based on the sharing information of highway; modeling and reasoning about states in late launch based on horn clauses; quality assessment of the retrieval system based on web-related degree; research and design of SaaS-based conference service platform; scenic management system based on number of visitors; task scheduling and resource allocation of cloud computing based on QoS; the research of oil fields heterogeneous data management technology; the user interface design of lifting equipment based on MATLAB; development of computerize value stream system; designed on information security systems for mobile databases; the research of the car following behavior model in VANET.
PUBLISHER: Trans Tech Publications
SPONSORS: Hong Kong Industrial Technology Research Centre, Inha University, Korea Maritime University
CONFERENCE NAME: 2014 2nd International Forum on Mechanical and Material Engineering, IFMME 2014
CONFERENCE DATE: 2014-03-08 through 2014-03-09
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Li, G., West, A.J., Densmore, A.L., Jin, Z., Parker, R.N., Hilton, R.G.
AUTHOR FULL NAMES: Li, Gen (56127683700); West, Alison Joshua (26538380300); Densmore, Alexander Logan (7004510678); Jin, Zhangdong (7403625767); Parker, Robert N. (44361526100); Hilton, Robert G. (24385259400)
56127683700; 26538380300; 7004510678; 7403625767; 44361526100; 24385259400
Seismic mountain building: Landslides associated with the 2008 Wenchuan earthquake in the context of a generalized model for earthquake volume balance
(2014) Geochemistry, Geophysics, Geosystems, 15 (4), pp. 833 - 844, Cited 173 times.
DOI: 10.1002/2013GC005067
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899141446&doi=10.1002%2F2013GC005067&partnerID=40&md5=5b8b41ab7a6a558105d71d8aa9e33bc1

AFFILIATIONS: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Geography, Durham University, Durham, County Durham, United Kingdom; Institute of Earth Environment, Xi'an, Shaanxi, China; School of Earth and Ocean Sciences, Cardiff University, Cardiff, South Glamorgan, Wales, United Kingdom
ABSTRACT: Here we assess earthquake volume balance and the growth of mountains in the context of a new landslide inventory for the M<inf>w</inf> 7.9 Wenchuan earthquake in central China. Coseismic landslides were mapped from high-resolution remote imagery using an automated algorithm and manual delineation, which allow us to distinguish clustered landslides that can bias landslide volume calculations. Employing a power-law landslide area-volume relation, we find that the volume of landslide-associated mass wasting (∼2.8+0.9/-0.7 km3) is lower than previously estimated (∼5.7-15.2 km3) and comparable to the volume of rock uplift (∼2.6±1.2 km3) during the Wenchuan earthquake. If fluvial evacuation removes landslide debris within the earthquake cycle, then the volume addition from coseismic uplift will be effectively offset by landslide erosion. If all earthquakes in the region followed this volume budget pattern, the efficient counteraction of coseismic rock uplift raises a fundamental question about how earthquakes build mountainous topography. To provide a framework for addressing this question, we explore a group of scaling relations to assess earthquake volume balance. We predict coseismic uplift volumes for thrust-fault earthquakes based on geophysical models for coseismic surface deformation and relations between fault rupture parameters and moment magnitude, M<inf>w</inf>. By coupling this scaling relation with landslide volume-M<inf>w</inf> scaling, we obtain an earthquake volume balance relation in terms of moment magnitude M<inf>w</inf>, which is consistent with the revised Wenchuan landslide volumes and observations from the 1999 Chi-Chi earthquake in Taiwan. Incorporating the Gutenburg-Richter frequency-M<inf>w</inf> relation, we use this volume balance to derive an analytical expression for crustal thickening from coseismic deformation based on an index of seismic intensity over a defined area. This model yields reasonable rates of crustal thickening from coseismic deformation (e.g., ∼0.1-0.5 km Ma-1 in tectonically active convergent settings), and implies that moderate magnitude earthquakes (M<inf>w</inf> ≈ 6-7) are likely responsible for most of the coseismic contribution to rock uplift because of their smaller landslide-associated volume reduction. Our first-order model does not consider a range of factors (e.g., lithology, climate conditions, epicentral depth, and tectonic setting), nor does it account for viscoelastic effects or isostatic responses to erosion, and there are important large uncertainties on the scaling relationships used to quantify coseismic deformation. Nevertheless, our study provides a conceptual framework and invites more rigorous modeling of seismic mountain building. Key Points Report a new data set of landslides triggered by the 2008 Wenchuan earthquake Develop a quantitative model to estimate earthquake volume balance Evaluate how earthquakes of varying magnitude contribute to coseismic mountain building © 2014. American Geophysical Union. All Rights Reserved.
INDEX KEYWORDS: Budget control; Deformation; Erosion; Faulting; Landslides; Lithology; 2008 wenchuan earthquakes; Analytical expressions; Conceptual frameworks; Coseismic deformation; Fault-rupture parameters; Landslide inventories; Quantitative modeling; Scaling relationships; Earthquakes; algorithm; Chi-Chi earthquake 1999; coseismic process; deformation mechanism; earthquake magnitude; earthquake mechanism; earthquake rupture; landslide; mass wasting; mountain region; parameterization; power law; remote sensing; Sichuan earthquake 2008; tectonic setting; uplift
REFERENCES: Abers, Geoffrey A., Slip on shallow-dipping normal faults, Geology, 37, 8, pp. 767-768, (2009); 
Avouac, Jean Philippe, Dynamic Processes in Extensional and Compressional Settings - Mountain Building: From Earthquakes to Geological Deformation, 6, pp. 377-439, (2007); 
Borghuis, A. M., Comparison between automated and manual mapping of typhoon-triggered landslides from SPOT-5 imagery, International Journal of Remote Sensing, 28, 8, pp. 1843-1856, (2007); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Cohen, Steven C., Convenient formulas for determining dip-slip fault parameters from geophysical observables, Bulletin of the Seismological Society of America, 86, 5, pp. 1642-1644, (1996); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
de Michele, Marcello D., Three-dimensional surface displacement of the 2008 May 12 Sichuan earthquake (China) derived from Synthetic Aperture Radar: Evidence for rupture on a blind thrust, Geophysical Journal International, 183, 3, pp. 1097-1103, (2010); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Densmore, Alexander Logan, Reply to 'Isostasy can't be ignored, Nature Geoscience, 5, 2, pp. 83-84, (2012)
PUBLISHER: American Geophysical Union
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Huang, Y., Yu, M., Bhattacharya, S.
AUTHOR FULL NAMES: Huang, Yu (57204857931); Yu, Miao (59662930600); Bhattacharya, Suby (23989947100)
57204857931; 59662930600; 23989947100
Characteristics of Flow Failures Triggered by Recent Earthquakes in China
(2014) Indian Geotechnical Journal, 44 (2), pp. 218 - 224, Cited 4 times.
DOI: 10.1007/s40098-014-0101-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899031487&doi=10.1007%2Fs40098-014-0101-y&partnerID=40&md5=78f648494705990d8a05d17e4e2e20e1

AFFILIATIONS: Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education, Shanghai, China; Department of Geotechnical Engineering, Tongji University, Shanghai, China; Department of Civil & Environmental Engineering, University of Surrey, Guildford, Surrey, United Kingdom
ABSTRACT: In recent years, several strong earthquakes occurred in China, like the 2008 Wenchuan Earthquake, 2003 Bachu Earthquake, etc. These earthquakes triggered numerous flow failures, causing severe damage to buildings and infrastructure. In this paper, some general characteristics of flow failures triggered by these recent earthquakes are reviewed. Based on seismic data analysis and field investigation, a brief overview of typical liquefaction phenomena and their characteristics during recent large earthquakes in China is presented. It is manifested that liquefaction occurs mainly in the alluvial plain sediments with low groundwater levels. Some new phenomena, like liquefaction of gravelly soil and deep-level sandy soils, and re-liquefaction, should be paid enough attention in further study. Then, the paper outlines the spatial distribution characteristics of flowslides induced by earthquakes to provide a reference for seismic design and risk mitigation. The flowslide-prone areas are dip slopes opposing the propagation direction of seismic wave, which are mostly located along the surface rupture and near the epicenter, especially on the hanging wall of the fault. Lastly, the state of the post-earthquake investigation and evaluation method for flow failures in China is presented briefly. Field investigation and remote-sensing image interpretation play important roles in the data collection and evaluation of seismic geohazards after earthquakes. © 2014 Indian Geotechnical Society.
AUTHOR KEYWORDS: China; Earthquake; Flow failure; Flowslide; Liquefaction
INDEX KEYWORDS: Groundwater; Liquefaction; Remote sensing; Seismic design; Seismic waves; Soil liquefaction; 2008 wenchuan earthquakes; China; Distribution characteristics; Flow failure; Flow slides; Propagation direction; Remote sensing images; Seismic data analysis; Earthquakes; alluvial plain; earthquake mechanism; earthquake rupture; failure analysis; flow field; liquefaction; risk assessment; seismic design; seismic hazard; Sichuan earthquake 2008; spatial distribution; strong motion; trigger mechanism
REFERENCES: Cubrinovski, Misko, Soil liquefaction effects in the central business district during the February 2011 Christchurch earthquake, Seismological Research Letters, 82, 6, pp. 893-904, (2011); 
Wang, Wenneng, Geological and geomorphological precursors of the Chiu-fen-erh-shan landslide triggered by the Chi-chi earthquake in Central Taiwan, Engineering Geology, 69, 1-2, pp. 1-13, (2003); 
Chinese Journal of Geophysics, (2005); 
Shen, Jun, The seismogenic tectonics of the MS6.8 Bachu-Jiashi, Xinjiang earthquake in Feb. 24, 2003, Dizhen Dizhi, 28, 2, pp. 205-212, (2006); 
Inland Earthq, (2006); 
Lin, Aiming, Co-seismic strike-slip surface rupture and displacement produced by the 2010 MW 6.9 Yushu earthquake, China, and implications for Tibetan tectonics, Journal of Geodynamics, 52, 3-4, pp. 249-259, (2011); 
Journal of Engineering Geology, (2010); 
J Eng Geol, (2011); 
Xiwei, Xu, Lushan MS7.0 earthquake: A blind reserve-fault event, Chinese Science Bulletin, 58, 28-29, pp. 3437-3443, (2013); 
Pei, Xiangjun, Analysis of characteristics of geological hazards by "4.20" Lushan earthquake in Sichuan, China, Journal of Chengdu University of Technology (Science and Technology Edition), 40, 3, pp. 257-263, (2013)
PUBLISHER: Springer India sanjiv.goswami@springer.co.in
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, B., Ma, G., Yu, J., Wang, S.
AUTHOR FULL NAMES: Zhang, Bin (58736532200); Ma, Guorui (7202152188); Yu, Jian (56058641100); Wang, Shaojun (56058242200)
58736532200; 7202152188; 56058641100; 56058242200
Change detection for low buildings after earthquake using very-high resolution pre-event optical and post-event SAR images
(2014) Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 39 (2), pp. 239 - 243, Cited 4 times.
DOI: 10.13203/j.whugis20120355
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895562661&doi=10.13203%2Fj.whugis20120355&partnerID=40&md5=0233adcf2300e4ec3f54534b3e41cb8f

AFFILIATIONS: School of Public Administration, China University of Geosciences, Wuhan, Hubei, China; Wuhan University, Wuhan, Hubei, China; Wuhan Urban Planning Information Center, Wuhan, Hubei, China
ABSTRACT: A damage assessment method is proposed by using pre-event very-high resolution (VHR) optical and post-event synthetic aperture radar (SAR) images to detect buildings damaged in an earthquake. First, the length, width, height and other 3-D parameters of a rectangular building are extracted using a pre-event VHR optical image. Second, an image-based GPU ray-tracing approach is used to simulate SAR images. Third, the similarity between the simulated SAR images and post-event actual SAR images is analyzed to determine thief the building is damaged. We demonstrate the feasibility and effectiveness of the method by using remote sensing images of the Sichuan Wenchuan Earthquake of May 12, 2008.
AUTHOR KEYWORDS: Damage assessment; Synthetic aperture radar (SAR); Very high resolution (VHR)
INDEX KEYWORDS: Damage detection; Earthquakes; Geometrical optics; Image reconstruction; Change detection; Damage assessments; Optical image; Rectangular Buildings; Remote sensing images; Synthetic aperture radar (SAR) images; Very high resolution; Wenchuan Earthquake; Synthetic aperture radar; building; computer simulation; earthquake damage; image resolution; ray tracing; remote sensing; seismic response; Sichuan earthquake 2008; synthetic aperture radar
REFERENCES: Saito, Keiko, Using High-Resolution Satellite Images for Post-Earthquake Building Damage Assessment: A Study Following the 26 January 2001 Gujarat Earthquake, Earthquake Spectra, 20, 1, pp. 145-169, (2004); 
IEEE IGARSS 2004, (2004); 
Bruzzone, Lorenzo, An adaptive parcel-based technique for unsupervised change detection, International Journal of Remote Sensing, 21, 4, pp. 817-822, (2000); 
Singh, Ashbindu, Review Articlel: Digital change detection techniques using remotely-sensed data, International Journal of Remote Sensing, 10, 6, pp. 989-1003, (1989); 
Coppin, Pol R., Processing of Multitemporal Landsat TM Imagery to Optimize Extraction of Forest Cover Change Features, IEEE Transactions on Geoscience and Remote Sensing, 32, 4, pp. 918-927, (1994); 
Lu, Dengsheng, Change detection techniques, International Journal of Remote Sensing, 25, 12, pp. 2365-2401, (2004); 
Radke, Richard J., Image change detection algorithms: A systematic survey, IEEE Transactions on Image Processing, 14, 3, pp. 294-307, (2005); 
Dekker, Rob J., High-Resolution Radar Damage Assessment After the Earthquake in Haiti on 12 January 2010, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 4, 4, pp. 960-970, (2011); 
Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
Jin, Yaqiu, Automatic detection of terrain surface changes after Wenchuan earthquake, May 2008, From ALOS SAR images using 2EM-MRF method, IEEE Geoscience and Remote Sensing Letters, 6, 2, pp. 344-348, (2009)
PUBLISHER: Wuhan University
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

2013 International Conference of Information Science and Management Engineering, ISME 2013, Volume 2
(2014) WIT Transactions on Information and Communication Technologies, 46 VOLUME 2, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888123352&partnerID=40&md5=0a2d92c5bf816567516c019e500d9bdf

ABSTRACT: The proceedings contain 398 papers. The special focus in this conference is on Production and Operation Management, Logistics and Supply Chain Management, Advanced Manufacturing System, Management Information System, Computer Engineering and Technology, Computer Networks, Financial Engineering and Risk Management, Safety Management and Human Factors Engineering, Technological Management, Innovation and Evaluation, Optimisation Technology and Algorithm, Knowledge Management and Data Mining and Digital Manufacturing. The topics include: Research of power demand side management under smart grid environment; research of cost management mode of power transmission project and its evaluation; influence of investment fund on stock dividend policy; IPO accounting fraud, audit supervision, and media monitoring; heavy commercial vehicles sound quality database system design; a method by using Gaussian estimation for the semi-parametrical panel data models; agricultural monitoring system based on wireless sensor network; design of smart grid system based on cloud computing; detection of water quantity in leaves based on image processing technology; the research and applications of agricultural automation based on internet of things; application discussion of salary management during the human resource management; algorithm optimization of sentence similarity based on sematic disambiguation; research on onshore oil and gas pipeline management system based on the dynamic risk assessment; the risk assessment of supply chain financing based on core enterprise; the highway bridge head jumps off cause and prevention research; the new utility current power generation device design; medical risks and management countermeasures; teaching reform of welding robot based on integration of teaching, learning, and practice; an empirical study of consumer acceptance of e-commerce web site; the securities market month K line forecast based on SVC; evaluation and empirical analysis of innovation capability of electronic information industry; the performance evaluation of fund family based on the super-efficiency DEA model; exploring the impacts of customer orientation on college students' satisfaction; the application of research of storage method for civil aviation emergency domain ontology; study on the fitness model for regional technological innovation ecosystem based on niche theory; social network analysis on Chinese urban community; self-maintenance for service cooperation driven by contract-performing circumstance; the optimization of mining areas and ore dressing plants match in Yunnan tin regional mine; determine the degree of annihilators by using run-length property of pseudorandom sequences; distributed lag structure of knowledge production; an investigation of digital management for paper periodicals in university library; the integration of follow-up audit resources in the post-disaster reconstruction projects; a new method of XML-based information exchanging between databases; the adaptation of governance for venture capital firm in China; the model of advertising on social networking platform; economic value estimation-based pricing for software as a service; design of the intelligent internet of things for examination service; fast PSO algorithm for community detection in graph; a knowledge discovery method based on web information retrieval; a point symmetry clustering algorithm based on PSO; a robust image hiding approach for secure multimodal biometrics; wireless sensor networks data recovery based on zero-norm minimization; design of state feedback controller for discrete linear systems with time delay; computer forensics based on particle swarm optimization in cloud computing; a hierarchical federated integration framework for trust e-commerce cloud; research of outliers in time series of stock prices based on improved K-MEANS clustering algorithm; group finance company and expropriation of controlling shareholder; Mongolian word segmentation system based on unsupervised statistical mode; the role agent design based on the rules engine; computer application of finance analysis on the accounting management; design and application of iris recognition system based on neural network; study on developing data warehouse for guidance ammunition support; an empirical study on the structural of corporate social responsibility performance; feature points matching method of UAV images based on local RANSAC; research on the paths and trends of Chinese social management system; formalization and semantics computing of Chinese sentence type; a high embedding efficiency speech information hiding approach; response RS interpretation for disaster situation and secondary geologic hazards of Wenchuan earthquake; a new algorithm for weakening phase distortion in GPS receiver; research on the knowledge-based e-learning teaching application platform; Tate pairing algorithm resistant to fault attack over binary field; a study on the impact of supply chain management practice on enterprise performance; uniform access control platform of web service based on semantic message; the models of quality assurance in assembly process of complex mechanical products; study on the risk assessment of iron ore shipping channel in China; a new lifetime distribution with decreasing failure rate; decision support system for inventory policies of complex distribution systems; a new approach to building ontologies from heterogeneous databases; emotion monitoring and abnormal warning based on online comments; an improved multiple sparse representation classification approach; design and implementation of commodity information query system based on android and mobile internet; the method of network-based weighted voronoi diagram; research on acquisition algorithm based on prior information for weak signal; discussion of agile development used in large enterprise application system; research on influence maximization problem in dynamic networks; segmentation for brain MRI image based on the fuzzy c-means clustering algorithm; dynamic fault-tolerant routing based on link state in fat tree; analysis and realization on the image filter; research on network public expenditure; green economic development and management and the research on financing model of traffic safety facilities.
SPONSORS: WIT Transactions on Information and Communication Technologies
CONFERENCE NAME: WIT Transactions on Information and Communication Technologies
CONFERENCE DATE: 2013-05-07 through 2013-05-08
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

2013 International Conference of Information Science and Management Engineering, ISME 2013, Volume 3
(2014) WIT Transactions on Information and Communication Technologies, 46 VOLUME 3, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888106429&partnerID=40&md5=0e198142036790a01e390972a5726ea1

ABSTRACT: The proceedings contain 398 papers. The special focus in this conference is on Production and Operation Management, Logistics and Supply Chain Management, Advanced Manufacturing System, Management Information System, Computer Engineering and Technology, Computer Networks, Financial Engineering and Risk Management, Safety Management and Human Factors Engineering, Technological Management, Innovation and Evaluation, Optimisation Technology and Algorithm, Knowledge Management and Data Mining and Digital Manufacturing. The topics include: Research of power demand side management under smart grid environment; research of cost management mode of power transmission project and its evaluation; influence of investment fund on stock dividend policy; IPO accounting fraud, audit supervision, and media monitoring; heavy commercial vehicles sound quality database system design; a method by using Gaussian estimation for the semi-parametrical panel data models; agricultural monitoring system based on wireless sensor network; design of smart grid system based on cloud computing; detection of water quantity in leaves based on image processing technology; the research and applications of agricultural automation based on internet of things; application discussion of salary management during the human resource management; algorithm optimization of sentence similarity based on sematic disambiguation; research on onshore oil and gas pipeline management system based on the dynamic risk assessment; the risk assessment of supply chain financing based on core enterprise; the highway bridge head jumps off cause and prevention research; the new utility current power generation device design; medical risks and management countermeasures; teaching reform of welding robot based on integration of teaching, learning, and practice; an empirical study of consumer acceptance of e-commerce web site; the securities market month K line forecast based on SVC; evaluation and empirical analysis of innovation capability of electronic information industry; the performance evaluation of fund family based on the super-efficiency DEA model; exploring the impacts of customer orientation on college students' satisfaction; the application of research of storage method for civil aviation emergency domain ontology; study on the fitness model for regional technological innovation ecosystem based on niche theory; social network analysis on Chinese urban community; self-maintenance for service cooperation driven by contract-performing circumstance; the optimization of mining areas and ore dressing plants match in Yunnan tin regional mine; determine the degree of annihilators by using run-length property of pseudorandom sequences; distributed lag structure of knowledge production; an investigation of digital management for paper periodicals in university library; the integration of follow-up audit resources in the post-disaster reconstruction projects; a new method of XML-based information exchanging between databases; the adaptation of governance for venture capital firm in China; the model of advertising on social networking platform; economic value estimation-based pricing for software as a service; design of the intelligent internet of things for examination service; fast PSO algorithm for community detection in graph; a knowledge discovery method based on web information retrieval; a point symmetry clustering algorithm based on PSO; a robust image hiding approach for secure multimodal biometrics; wireless sensor networks data recovery based on zero-norm minimization; design of state feedback controller for discrete linear systems with time delay; computer forensics based on particle swarm optimization in cloud computing; a hierarchical federated integration framework for trust e-commerce cloud; research of outliers in time series of stock prices based on improved K-MEANS clustering algorithm; group finance company and expropriation of controlling shareholder; Mongolian word segmentation system based on unsupervised statistical mode; the role agent design based on the rules engine; computer application of finance analysis on the accounting management; design and application of iris recognition system based on neural network; study on developing data warehouse for guidance ammunition support; an empirical study on the structural of corporate social responsibility performance; feature points matching method of UAV images based on local RANSAC; research on the paths and trends of Chinese social management system; formalization and semantics computing of Chinese sentence type; a high embedding efficiency speech information hiding approach; response RS interpretation for disaster situation and secondary geologic hazards of Wenchuan earthquake; a new algorithm for weakening phase distortion in GPS receiver; research on the knowledge-based e-learning teaching application platform; Tate pairing algorithm resistant to fault attack over binary field; a study on the impact of supply chain management practice on enterprise performance; uniform access control platform of web service based on semantic message; the models of quality assurance in assembly process of complex mechanical products; study on the risk assessment of iron ore shipping channel in China; a new lifetime distribution with decreasing failure rate; decision support system for inventory policies of complex distribution systems; a new approach to building ontologies from heterogeneous databases; emotion monitoring and abnormal warning based on online comments; an improved multiple sparse representation classification approach; design and implementation of commodity information query system based on android and mobile internet; the method of network-based weighted voronoi diagram; research on acquisition algorithm based on prior information for weak signal; discussion of agile development used in large enterprise application system; research on influence maximization problem in dynamic networks; segmentation for brain MRI image based on the fuzzy c-means clustering algorithm; dynamic fault-tolerant routing based on link state in fat tree; analysis and realization on the image filter; research on network robot real-time communication strategy; method analysis and design on self-organizing network; identity-based proxy signcryption schemes; study on innovation integration based on technological growth; an algorithm for energy efficient placement of base station in wireless sensor networks; stabilized voltage design and magnetic circuit analysis on hybrid excitation generator for vehicle application; research on the colleges and universities accounting and enterprise accounting system; the research of data exchange platform based on web services; value-driven and bilateral resource integration oriented service information systems; design of wireless sensor networks nodes for hydraulic system pressure monitoring; method for test results analysis of e-learning based on rough set theory; a modified hexagon diamond search algorithm for fast motion estimation; RFID security authentication protocol based on key update mechanism; MFCC extraction in AAC domain for audio content analysis; a research on the training mode of applied financial talents based on the market demand; design and implementation of a component based on multi-bidirectional queue; discovery of direct and indirect temporal association patterns in large transaction databases; a lightweight timestamp-based method for data and China's development of low carbon economy; foreign trade development in Shandong province of Bohai economic circle; Color study and design of biological garments; sustainable development of holiday economy in China; research on the relationship between urbanization and urban public expenditure; green economic development and management and the research on financing model of traffic safety facilities.
SPONSORS: WIT Transactions on Information and Communication Technologies
CONFERENCE NAME: WIT Transactions on Information and Communication Technologies
CONFERENCE DATE: 2013-05-07 through 2013-05-08
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Ouyang, C.-L., He, Y.-X., Shen, S.-P.
AUTHOR FULL NAMES: Ouyang, Chunlie (36480219800); He, Yunxiao (55365873500); Shen, Songping (26028706900)
36480219800; 55365873500; 26028706900
Response RS interpretation for disaster situation and secondary geologic hazards of wenchuan earthquake
(2014) WIT Transactions on Information and Communication Technologies, 46 VOLUME 1, pp. 855 - 861, Cited 0 times.
DOI: 10.2495/ISME20131101
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887924258&doi=10.2495%2FISME20131101&partnerID=40&md5=00ab9b7dd1d9ba70401f622c481443a0

AFFILIATIONS: Mianyang Normal University, Mianyang, Sichuan, China; Remote Sensing Centre of Sichuan Province, Chengdu, China
ABSTRACT: Remote Sensing Center of Sichuan province (RSCSP) received an urgent task soon after the world-shocking earthquake occurred on May 12, 2008 (so-called "5.12" earthquake), meanwhile the emergency working group of RS interpretation was founded by RSCSP and CDUT (Chengdu University of Technology). The main objective of this response RS interpretation group is to quickly provide the information of the earthquake disaster and the secondary geologic hazard situation. The first-hand information is immediately and accurately worked out and submitted to the site rescue teams, which is also very important and significant for making the further decisions of rescue actions and disaster reliefs. The data also have scientific value for particular ground surveying of geologic hazards, and for regional security assessment to postquake rebuilding. © 2014 WIT Press.
AUTHOR KEYWORDS: Multisource RS data; Response RS interpretation; Wenchuan earthquake
INDEX KEYWORDS: Disaster situations; Earthquake disaster; Geologic hazards; Multisources; Regional security; Response RS interpretation; Scientific values; Wenchuan Earthquake; Disaster prevention; Disasters; Earthquakes; Hazards; Information technology; Emergency services
REFERENCES: undefined, (2005); 
Environment Remote Sensing, (2006); 
Remote Sensing Technical Tribune, (2003); 
County City Geo Disaster Survey and Zoning Basic Requirement, (1999); 
Implement Rule, (2003); 
undefined, (1999); 
Remote Sensing Technology Application in Geological Hazard Survey, (2006)
SPONSORS: WIT Transactions on Information and Communication Technologies
CONFERENCE NAME: WIT Transactions on Information and Communication Technologies
CONFERENCE DATE: 2013-05-07 through 2013-05-08
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ma, H., Lu, N., Ge, L., Li, Q., You, X., Li, X.
AUTHOR FULL NAMES: Ma, Haijian (35262530900); Lu, Nan (57216383337); Ge, Linlin (23392861200); Li, Qiang (57191696093); You, Xinzhao (8429520900); Li, Xiaoxuan (55932111200)
35262530900; 57216383337; 23392861200; 57191696093; 8429520900; 55932111200
Automatic road damage detection using high-resolution satellite images and road maps
(2013) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6723638, pp. 3718 - 3721, Cited 26 times.
DOI: 10.1109/IGARSS.2013.6723638
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894237395&doi=10.1109%2FIGARSS.2013.6723638&partnerID=40&md5=15e3b98f4a61587c257bf8790388be68

AFFILIATIONS: National Earthquake Infrastructure Service, Beijing, China; Institute of Remote Sensing and GIS, Peking University, Beijing, China; School of Civil and Environmental Engineering, UNSW Sydney, Sydney, NSW, Australia
ABSTRACT: Roads are traffic lifelines for emergency rescue and disaster relief. After major earthquakes, it is very significant to extract road damage rapidly and accurately in disaster areas by remote sensing for emergency rescue. Because road damage caused by earthquake is ever-changing,there is no common spectral characteristic of it in remote sensing images. Meanwhile, there are many phenomena of 'synonyms spectrums' and 'different spectrum characteristics with the same object' in remote sensing images. Thus, traditional methods by spectrum characteristics are usually with low accuracy and not universal. This paper proposes an automatic approach to extract road damage rapidly based on sidelines using high resolution satellites images and road maps. Road sideline is one of stable geometric features in both pre-earthquake and post-earthquake images, and the change of road sideline is a remarkable evidence of road damage exists. The approach firstly extracts sidelines of undamaged road from images acquired after earthquakes, and then these road sidelines are compared with the road lines before earthquakes supplied by road maps. The damaged segments can be extracted through comparison. The performance of the method is evaluated by an experiment with QuickBird images in the WenChuan earthquake disaster area. © 2013 IEEE.
AUTHOR KEYWORDS: High resolution; Road damage detection; Satellite images
REFERENCES: Research on Road Damage Detection from High Resolution Remotely Sensed Images for Disaster Evaluation, (2009); 
Li, Peijun, A novel method for urban road damage detection using very high resolution satellite imagery and road map, Photogrammetric Engineering and Remote Sensing, 77, 10, pp. 1057-1066, (2011); 
Chini, Marco, Exploiting SAR and VHR optical images to quantify damage caused by the 2003 bam earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 145-152, (2009); 
Rowe, Neil C., Change detection for linear features in aerial photographs using edge-finding, IEEE Transactions on Geoscience and Remote Sensing, 39, 7, pp. 1608-1612, (2001); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
Meer, Peter P., Edge detection with embedded confidence, IEEE Transactions on Pattern Analysis and Machine Intelligence, 23, 12, pp. 1351-1365, (2001)
SPONSORS: The Institute of Electrical and Electronics Engineers,, Geoscience and Remote Sensing Society (IEEE GRSS)
CONFERENCE NAME: 2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013
CONFERENCE DATE: 2013-07-21 through 2013-07-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, J., Fan, X., Chen, L., Chen, L.
AUTHOR FULL NAMES: Liu, Jian (57196289956); Fan, Xiangtao (7403394160); Chen, Lin (57192611883); Chen, Lajiao (59446948700)
57196289956; 7403394160; 57192611883; 59446948700
Design and implementation of disaster background database and visualization system
(2013) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6721227, pp. 597 - 599, Cited 1 times.
DOI: 10.1109/IGARSS.2013.6721227
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894230387&doi=10.1109%2FIGARSS.2013.6721227&partnerID=40&md5=2281b602c870e0f7783da79bbe5a1c78

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: In this paper, management of multi-source heterogeneous disaster background data and fast reconstruction methods of 3D scene are proposed. 2D disasters background database system and 3D disaster visualization system are designed and implemented. By the shared metadata dimensions, integrated organization of disaster background data is realized. Based on multi-threaded pre-caching technology, fast scheduling and display of remote sensing images are achieved. Through interactive mechanism, synchronized data display and operation between 2D and 3D system are realized. Finally, 3D visualization of Wenchuan earthquake area and sea level flooded simulation in the New Coastal Region of Tianjin are took to verify the feasibility of the system. The system has characters of running fast, easy to operate, simple to deploy, and suitable for practical application in disaster rescue. © 2013 IEEE.
AUTHOR KEYWORDS: database; Disaster; visualization
REFERENCES: Dong, Chen E., GIS-based study and application of meteorological disaster assessment system, Journal of Natural Disasters, 19, 6, pp. 107-111, (2010); 
Chen, Huimin, GIS-based integration of spatial-data and business-data in disaster emergency management system, Journal of Natural Disasters, 20, 1, pp. 163-167, (2011); 
Feng, Biao, An earthquake disaster scenario simulation system based on 3 - Dimensional GIS, World Earthquake Engineering, 26, 1, pp. 114-120, (2010); 
Surveying and Mapping of Sichuan China
SPONSORS: The Institute of Electrical and Electronics Engineers,, Geoscience and Remote Sensing Society (IEEE GRSS)
CONFERENCE NAME: 2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013
CONFERENCE DATE: 2013-07-21 through 2013-07-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Fan, Y., Chen, G., Kasama, K., Li, Y.
AUTHOR FULL NAMES: Fan, Yanan (55867277000); Chen, Guangqi (55577206900); Kasama, Kiyonobu (7005670209); Li, Yange (55339639500)
55867277000; 55577206900; 7005670209; 55339639500
Susceptibility analysis of earthquake induced landslide-dam based on GIS
(2013), 4, pp. 2646 - 2653, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892853015&partnerID=40&md5=61bca023e4051b61df3bb5ce2f55eff7

AFFILIATIONS: Civil and Structural Engineering Department, Kyushu University, Fukuoka, Fukuoka, Japan
ABSTRACT: Some significant hazards may occur due to large landslide-dams formed by earthquake induced landslides. It presents serious threats to both life and property from possible upstream flooding as the impounded lake water level rises, possible dam failure and downstream flooding as rapid release of impounded water. In order to prevent those secondary disasters, we made an assumption that the landslide dam is only formed when a large amount of landslide deposits directly rush into a river with moderate or high-velocities, and then presented a practical prediction method to extract the dangerous slopes as sources of earthquake induced landslide-dam formation. The prediction procedure consists of the following steps: (1) Identification of all the slopes using spatial statistics; (2) The extraction of potential slopes according to our assumption using three spatial relation filters; (3) Stability analysis to determine landslide prone slopes and volume estimation of potential landslide deposits using Limit Equilibrium Analysis. (4) Production of susceptibility map by ranking the exact slopes. This method has been used to extract slopes those have potential to collapse and form landslide-dams in the catchment of Tongkou river based on the data from 2008 Wenchuan earthquake. The results show that the proposed method is effective and efficient. Copyright 2013 ARMA, American Rock Mechanics Association.
INDEX KEYWORDS: 2008 wenchuan earthquakes; Earthquake-induced landslides; Landslide deposits; Limit equilibrium analysis; Secondary disasters; Spatial statistics; Susceptibility analysis; Volume estimations; Catchments; Dams; Deposits; Disaster prevention; Disasters; Earthquakes; Floods; Geomechanics; Rivers; Rock mechanics; Water levels; Landslides
REFERENCES: Special Conference Material, (2008); 
Foundation Engineering Equipment, (2005); 
Annual Report of the Research Institute for Hazards in Snowy Area, (2005); 
Jsece, (2009); 
Large Scale Landslides Induced by the Wenchuan Earthquake, (2009); 
Floods Geomorphology, (1998); 
Journal of the Japan Society of Erosion Control Engineering; 
Arc Hydro GIS for Water Resources, (2002); 
Journal of the Japan Society of Engineering Geology, (2005); 
Landslide Susceptibility Zonation in Slopeland of Urban Area, (2007)
SPONSORS: American Rock Mechanics Association
CONFERENCE NAME: 47th US Rock Mechanics / Geomechanics Symposium 2013
CONFERENCE DATE: 2013-06-23 through 2013-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Feng, T., Hong, Z., Wu, H., Fu, Q., Wang, C., Jiang, C., Tong, X.
AUTHOR FULL NAMES: Feng, Tienan (57200335585); Hong, Zhonghua (57918901800); Wu, Hengjing (57218181081); Fu, Qiushi (55272196700); Wang, Chaoxin (55774735800); Jiang, Chenghua (55774576200); Tong, Xiaohua (55500134600)
57200335585; 57918901800; 57218181081; 55272196700; 55774735800; 55774576200; 55500134600
Estimation of earthquake casualties using high-resolution remote sensing: A case study of Dujiangyan city in the May 2008 Wenchuan earthquake
(2013) Natural Hazards, 69 (3), pp. 1577 - 1595, Cited 30 times.
DOI: 10.1007/s11069-013-0764-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888636841&doi=10.1007%2Fs11069-013-0764-1&partnerID=40&md5=65c0acdb3b1699fa7c0f9b0280333b96

AFFILIATIONS: Tongji University School of Medicine, Shanghai, China; College of Surveying and Geo-Informatics, Tongji University, Shanghai, China; College of Civil Engineering, Tongji University, Shanghai, China
ABSTRACT: From a disaster relief perspective, an immediate and efficient rescue operation after an earthquake can greatly increase the number of survivors. An effective rescue operation depends on two key elements: localisation of the affected areas and estimation of the number of casualties in these areas. Many more studies have been conducted on the localisation of affected areas than on casualty estimation. Consequently, this study develops a model for rapidly estimating the number of casualties using satellite remote sensing (SRS). The model is based on the attributes of damaged buildings, as these buildings cause the greatest harm to inhabitants and they can be detected by SRS. The model uses the damage index (DI) of buildings computed by a numerical damage model derived from SRS images to assess the extent of damage. The DI is then combined with the building's materials and structure index, which is calculated using information from the local geographic information system, to compute the joint casualty index (JCI). Finally, the number of casualties is estimated by the product of the JCI multiplied by the number of people inside the damaged buildings at the time of the earthquake. The model is then applied to three towns in Dujiangyan City, as these were the areas that most severely affected by the Wenchuan earthquake. Preliminary results showed that there was little difference between the actual and estimated number of casualties. It is recommended that more casualty data should be included in the model to improve the accuracy of estimation. © 2013 Springer Science+Business Media Dordrecht.
AUTHOR KEYWORDS: Casualty estimation; Earthquake rescue; Geographic information system; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: accuracy assessment; disaster management; earthquake damage; estimation method; GIS; numerical model; remote sensing; Sichuan earthquake 2008; China; Dujiangyan; Sichuan
REFERENCES: Alobeid, Abdalla, Comparison of matching algorithms for DSM generation in urban areas from Ikonos imagery, Photogrammetric Engineering and Remote Sensing, 76, 9, pp. 1041-1050, (2010); 
Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
Beck, Louisa R., Remote sensing and human health: New sensors and new opportunities, Emerging Infectious Diseases, 6, 3, pp. 217-227, (2000); 
Birchfield, Stan T., Depth discontinuities by pixel-to-pixel stereo, International Journal of Computer Vision, 35, 3, pp. 269-293, (1999); 
Blong, Russell J., A new damage index, Natural Hazards, 30, 1, pp. 1-23, (2003); 
Brunner, Dominik, Change detection for earthquake damage assessment in built-up areas using very high resolution optical and SAR imagery, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3210-3213, (2010); 
J Earthquake Eng Eng Vibr, (2012); 
Proceedings of the 10th World Conference on Earthquake Engineering, (1992); 
Almeida, Cláudia Maria De, GIS and remote sensing as tools for the simulation of urban land-use change, International Journal of Remote Sensing, 26, 4, pp. 759-774, (2005); 
Delgado, Laura, Geospatial tools for the identification of a malaria corridor in Estado Sucre, a Venezuelan north-eastern state, Geospatial Health, 5, 2, pp. 169-176, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Zhou, B., Yu, G.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Zhou, Benjang Gang (8289961000); Yu, Guihua (7403528699)
35184309900; 8246843900; 8289961000; 7403528699
Revisions of the M 8.0 Wenchuan earthquake seismic intensity map based on co-seismic landslide abundance
(2013) Natural Hazards, 69 (3), pp. 1459 - 1476, Cited 53 times.
DOI: 10.1007/s11069-013-0757-0
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888636379&doi=10.1007%2Fs11069-013-0757-0&partnerID=40&md5=3c6e8db610ba5715abe73b06676de0be

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Hundreds of thousands of landslides were triggered by the May 12, 2008, Mw 7.9 Wenchuan earthquake in China. A detailed inventory of landslides triggered by the earthquake was prepared based on geographic information systems and remote sensing technology. Visual interpretation of high-resolution satellite images and aerial photos taken pre- and post-earthquake and selected field investigation showed that at least 197,481 co-seismic landslides related to the earthquake were triggered throughout an area of approximately 110,000 km2. These co-seismic landslides are delineated as individual solid polygons. The landslides cover a total area of approximately 1,160 km2. Most of the landslides are distributed in an approximate ellipse area with a total area of approximately 44,031 km2. In this paper, quantitative co-seismic landslide criteria for seismic intensity zonation were constructed based on the original "M 8.0 Wenchuan Earthquake Seismic Intensity Map" (MWESIM) and co-seismic landslide abundance analyses. These quantitative criteria, which correspond to landslide area percentages (LAP), indicate the percentage of the area affected by landslides in certain calculation windows and are listed as follows: Areas of LAP ≥70 % correspond to the XII intensity district; areas of 20 % ≤ LAP < 70 % correspond to the XI intensity district; areas of 1 % ≤ LAP < 5 % correspond to the IX intensity district; and areas of LAP <1 % correspond to the VIII and less-than-VIII intensity districts. The VII and greater-than-VII intensity districts of the original MWESIM, which constituted an area of approximately 123,832 km2, were corrected based on the above quantitative criteria. The degrees of fit of the original and revised MWESIMs with the co-seismic landslides were 93.8 and 95.8 %, respectively, indicating a 2.0 % improvement. The quantitative criteria of the constructed earthquake-triggered landslides for seismic intensity zonation can provide a scientific reference, standard, and basis for seismic intensity zonation in other earthquake events, especially those occurring in mountainous areas. © 2013 Springer Science+Business Media Dordrecht.
AUTHOR KEYWORDS: GIS; Revision; Spatial distribution; The M 8.0 Wenchuan earthquake seismic intensity map; Wenchuan earthquake-triggered landslides
INDEX KEYWORDS: coseismic process; data interpretation; earthquake intensity; earthquake magnitude; earthquake trigger; GIS; landslide; remote sensing; satellite imagery; seismicity; Sichuan earthquake 2008; spatial distribution
REFERENCES: Chaytor, Jason D., Size distribution of submarine landslides along the U.S. Atlantic margin, Marine Geology, 264, 1-2, pp. 16-27, (2009); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Seismic Intensity Map of the M8, (2008); 
Cruden, David M., Landslide types and processes, Special Report - National Research Council, Transportation Research Board, 247, pp. 36-75, (1996); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
National Standard of the People S Republic of China, (2008); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Görüm, Tolga, Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake, Geomorphology, 184, pp. 127-138, (2013); 
Guzzetti, Fausto, Landslide volumes and landslide mobilization rates in Umbria, central Italy, Earth and Planetary Science Letters, 279, 3-4, pp. 222-229, (2009); 
Guzzetti, Fausto, Landslide inventory maps: New tools for an old problem, Earth-Science Reviews, 112, 1-2, pp. 42-66, (2012)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ma, C., Hu, K., Zou, Q., Tian, M.
AUTHOR FULL NAMES: Ma, Chao (55580268600); Hu, Kaiheng (55648903800); Zou, Qiang (57203216238); Tian, Mi (57206275854)
55580268600; 55648903800; 57203216238; 57206275854
Characteristics of clustering debris flows in Wenchuan earthquake zone
(2013) Journal of Mountain Science, 10 (6), pp. 953 - 961, Cited 19 times.
DOI: 10.1007/s11629-013-2410-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888236023&doi=10.1007%2Fs11629-013-2410-5&partnerID=40&md5=8ae02a1b7a373378acb8567e16e7d8ec

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Graduate School of Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Clustering debris-flow events, namely many debris flows simultaneously triggered by a regional rainstorm in a large-scale mountainous area, occurred in four regions of Wenchuan earthquake stricken areas in 2008 and 2010. The characteristics of the clustering debris flows are examined with regard to triggering rainfall, formation process, and relationship with the earthquake by field survey and remote sensing interpretation. It is found that the clustering events occurred nearly at the same time with the local peak rainstorms, and the rainfall intensity-duration bottom limit line for clustering debris flows is higher than the worldwide line. It means that more rainfall is needed for the occurrence of the clustering debris flows. Four kinds of major formation processes for these debris flows are summarized: tributary-dominated, mainstream-dominated, transformation from slope failures, and mobilization or liquefaction of landslide. The four regions has a spatial correlation with the strong-quake-influenced zone with the peak ground acceleration = 0.2 g and the seismic intensity > X. © 2013 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Clustering debris flows; Formation process; Rainfall threshold; Wenchuan earthquake
REFERENCES: Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
California Geology, (1985); 
Chen, Chienyuan, Analysis of time-varying rainfall infiltration induced landslide, Environmental Geology, 48, 4-5, pp. 466-479, (2005); 
Chen, Suchin Chien, Non-structural mitigation programs for sediment-related disasters after the Chichi Earthquake in Taiwan, Journal of Mountain Science, 7, 3, pp. 291-300, (2010); 
Chen, Ningsheng, Impact of earthquake on debris flows - A case study on the wenchuan earthquake, Journal of Earthquake and Tsunami, 5, 5, pp. 493-508, (2011); 
Egashira, Shinji, Experimental study on the entrainment of bed material into debris flow, Physics and Chemistry of the Earth, Part C: Solar, Terrestrial and Planetary Science, 26, 9, pp. 645-650, (2001); 
Gabet, Emmanuel J., The mobilization of debris flows from shallow landslides, Geomorphology, 74, 1-4, pp. 207-218, (2006); 
J Nepal Geol Soc, (2000); 
Debris Flow Hazards and Related Phenomena, (2005); 
Godt, Jonathan W., Alpine debris flows triggered by a 28 July 1999 thunderstorm in the central Front Range, Colorado, Geomorphology, 84, 1-2, pp. 80-97, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Y., Chen, G., Zheng, L., Li, Y., Wu, J.
AUTHOR FULL NAMES: Zhang, Yingbin Bin (57214256630); Chen, Guangqi (55577206900); Zheng, Lu (55273034500); Li, Yange (55339639500); Wu, Jian (56358748000)
57214256630; 55577206900; 55273034500; 55339639500; 56358748000
Effects of near-fault seismic loadings on run-out of large-scale landslide: A case study
(2013) Engineering Geology, 166, pp. 216 - 236, Cited 186 times.
DOI: 10.1016/j.enggeo.2013.08.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887118111&doi=10.1016%2Fj.enggeo.2013.08.002&partnerID=40&md5=1c2122b8701ee7e6876cc235afb2a96b

AFFILIATIONS: Department of Civil and Structure Engineering, Kyushu University, Fukuoka, Fukuoka, Japan
ABSTRACT: This study presents the run-out analysis of the Daguangbao landslides subjected to near-fault multi-direction earthquake forces using discontinuous deformation analysis (DDA). The Daguangbao landslide is the largest landslide induced by the 2008 Wenchuan earthquake. In order to investigate the effects of near-fault seismic force on landslide run-out, kinematic behavior of sliding mass is simulated by a dynamic discrete numerical analysis method called DDA. In this simulation, based on the shape of failure surface and the feature of slope geology, the whole slope is divided into three parts: base block, upper sliding mass, and lower sliding mass. Then two sliding masses are divided into the smaller discrete deformable blocks based on pre-existing discontinuities. Size effect of the huge landslide is also considered. Baseline corrected real horizontal and vertical ground motions are taken as volume force acting to the base block. The results show that seismic force has a significant influence on the landslide progression, sliding distance, and shape of post-failure. Results of the horizontal-and-vertical situation are in good agreement with those obtained from post-earthquake field investigation, remote sensing image and description from the survivors. © 2013 Elsevier B.V.
AUTHOR KEYWORDS: Daguangbao landslide; Earthquake-induced landslide; Run-out analysis; Seismic force; Size effect
INDEX KEYWORDS: Daguangbao landslides; Earthquake-induced landslides; Run outs; Seismic forces; Size effects; Deformation; Faulting; Image reconstruction; Landslides; Earthquakes; deformation; discontinuity; ground motion; landslide; remote sensing; seismicity; Sichuan earthquake 2008; size effect
REFERENCES: Bakun-Mazor, Dagan, Dynamic sliding of tetrahedral wedge: The role of interface friction, International Journal for Numerical and Analytical Methods in Geomechanics, 36, 3, pp. 327-343, (2012); 
Boore, David M., Effect of baseline corrections on displacements and response spectra for several recordings of the 1999 Chi-Chi, Taiwan, earthquake, Bulletin of the Seismological Society of America, 91, 5, pp. 1199-1211, (2001); 
Chang, Kuo Jen, Analysis of landsliding by earthquake shaking using a block-on-slope thermo-mechanical model: Example of Jiufengershan landslide, central Taiwan, Engineering Geology, 80, 1-2, pp. 151-163, (2005); 
Chen, H., Numerical simulation of debris flows, Canadian Geotechnical Journal, 37, 1, pp. 146-160, (2000); 
Chen, H. Joanna, Erosional effects on runout of fast landslides, debris flows and avalanches: A numerical investigation, Geotechnique, 56, 5, pp. 305-322, (2006); 
Intech, (2011); 
undefined; 
Crosta, Giovanni Battista, Numerical modelling of large landslides stability and runout, Natural Hazards and Earth System Sciences, 3, 6, pp. 523-538, (2003); 
Geophys Res Abstr, (2003); 
Crosta, Giovanni Battista, Replay of the 1987 Val Pola Landslide, Italian Alps, Geomorphology, 60, 1-2, pp. 127-146, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Bai, S.B., Xu, Q., Wang, J., Zhou, P.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Xu, Qiang (56506033600); Wang, Jian (55491249300); Zhou, Pinggen (25931277700)
15830966700; 56506033600; 55491249300; 25931277700
Pre-conditioning factors and susceptibility assessments of Wenchuan earthquake landslide at the Zhouqu segment of Bailongjiang basin, China
(2013) Journal of the Geological Society of India, 82 (5), pp. 575 - 582, Cited 13 times.
DOI: 10.1007/s12594-013-0190-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890376624&doi=10.1007%2Fs12594-013-0190-8&partnerID=40&md5=e1c1ca356ec9e40f4cfc851959a009f1

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China; Chengdu University of Technology, Chengdu, China; China Institute of Geo-Environment Monitoring, Beijing, Beijing, China
ABSTRACT: In this study, we present a landslide susceptibility assessment carried out after the devastating 2008 Wenchuan earthquake. For the Zhouqu segment in the Bailongjiang basin in north-western China landslide susceptibility was computed by a logistic regression method. This region has been experiencing landslides for a long time, and numerous additional slope failures were triggered by the 2008 Wenchuan earthquake. The data used for this study consists of slope failures attributed to the 2008 earthquake, the 878 post Wenchuan earthquake landslides and collapses inventory build up by combination the field investigation, monoscopic manual interpretation, image classification and texture analysis using SPOT 5 and ALOS remote-sensing image data. All data derived from remote sensing images are validated during field investigations. The landslide pre-disposing factor database was constructed. A digital elevation model (DEM) with a 30 × 30 m resolution, orthophotos, geological and land-use maps and information on peak ground acceleration data from the 2008 earthquake is used. The statistical analysis of the relation between Wencuan earthquake-triggered landslides and pre-disposing factors show the great influence of lithological and topographical conditions for earthquake-triggered slope failures. The quality of susceptibility mapping was validated by splitting the study area into a training and validation set. The prediction capability analysis showed that the landslide susceptibility map could be used for land planning as well as emergency planning by local authorities in this region. © 2013 Geological Society of India.
AUTHOR KEYWORDS: China; Landslide susceptibility; Wenchuan earthquake; Zhouqu segment
INDEX KEYWORDS: ALOS; collapse; digital elevation model; earthquake trigger; geological mapping; landslide; lithology; orthophoto; remote sensing; Sichuan earthquake 2008; slope failure; SPOT; topography; China; Gansu; Zhouqu
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Ayalew, Lulseged, Landslides in Sado Island of Japan: Part II. GIS-based susceptibility mapping with comparisons of results from two methods and verifications, Engineering Geology, 81, 4, pp. 432-445, (2005); 
Proceedings of the International Conference Mountain Risks, (2010); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Bai, Shibiao, GIS-based rare events logistic regression for landslide-susceptibility mapping of Lianyungang, China, Environmental Earth Sciences, 62, 1, pp. 139-149, (2011); 
Beguería, Santiago, Validation and evaluation of predictive models in hazard assessment and risk management, Natural Hazards, 37, 3, pp. 315-329, (2006); 
Çan, Tolga, Susceptibility assessments of shallow earthflows triggered by heavy rainfall at three catchments by logistic regression analyses, Geomorphology, 72, 1-4, pp. 250-271, (2005); 
Engineering Geological Problems Study of Gansu Section of Lanzhou Haikou Highway, (2006); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, Y., Chen, G., Kasama, K., Li, Y.
AUTHOR FULL NAMES: Fan, Yanan (55867277000); Chen, Guangqi (55577206900); Kasama, Kiyonobu (7005670209); Li, Yange (55339639500)
55867277000; 55577206900; 7005670209; 55339639500
Susceptibility Zonation of earthquake induced landslide-dams at the catchment of Tongkou river, China
(2013) Memoirs of the Faculty of Engineering, Kyushu University, 73 (2), pp. 57 - 70, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884766120&partnerID=40&md5=9524e89befea332c9ff72f5b2816fad5

ABSTRACT: Significant hazards may occur due to large landslide-dams formed by earthquake induced landslides. Those landslide-dams present serious threats to both life and property from possible upstream flooding when the impounded lake water level rises, and possible dam failure and downstream flooding with rapid release of impounded water. In order to prevent those secondary disasters, we made an assumption that the landslide-dams are only formed when a large amount of landslide deposits directly rush into a river with moderate or high-velocities. Then a practical prediction method is presented to extract the dangerous slopes which are thought as the sources of earthquake induced landslide-dams. The prediction procedure consists of the following steps: (1) identification of all the slopes using spatial statistics; (2) the extraction of potential slopes according to our assumption using three spatial relation filters; (3) stability analysis to determine landslide prone slopes and volume estimation of potential landslide deposits using Limit Equilibrium Analysis. (4) susceptibility mapping by ranking the exact slopes. This method has been used to extract slopes those are potential to collapse and form landslide-dams in the catchment of Tongkou river after the 2008 Wenchuan earthquake, China. Results show that the proposed method is effective and efficient.
AUTHOR KEYWORDS: GIS; Landslide-dam; Limit equilibrium analysis; Spatial filters; Stability analysis; Susceptibility analysis; Wenchuan earthquake
INDEX KEYWORDS: Landslide-dam; Limit equilibrium analysis; Spatial filters; Stability analysis; Susceptibility analysis; Wenchuan Earthquake; Catchments; Dams; Deposits; Disaster prevention; Disasters; Earthquakes; Floods; Geographic information systems; Landslides; Runoff; Water levels; Rivers; catchment; collapse; dam; flooding; geological mapping; landslide; prediction; Sichuan earthquake 2008; spatial analysis; water level; zonation; China; Sichuan; Tongkou Basin
REFERENCES: Special Conference Material, (2008); 
Foundation Engineering Equipment, (2005); 
Annual Report of the Research Institute for Hazards in Snowy Area, (2005); 
Jsece, (2009); 
Large Scale Landslides Induced by the Wenchuan Earthquake, (2009); 
Floods Geomorphology, (1998); 
Journal of the Japan Society of Erosion Control Engineering; 
Arc Hydro GIS for Water Resources, (2002); 
Journal of the Japan Society of Engineering Geology, (2005); 
Ministry of Economic Affairs, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qiao, G., Lu, P., Scaioni, M., Xu, S., Tong, X., Feng, T., Wu, H., Chen, W., Tian, Y., Wang, W., Li, R.
AUTHOR FULL NAMES: Qiao, Gang (57204185597); Lu, Ping (41861974200); Scaioni, M. (8261815100); Xu, Shuying (55532944600); Tong, Xiaohua (55500134600); Feng, Tiantian (12782146100); Wu, Hangbin (15129097800); Chen, Wen (59740862100); Tian, Yixiang (55866018700); Wang, Weian (15841008300); Li, Rongxing (7404724327)
57204185597; 41861974200; 8261815100; 55532944600; 55500134600; 12782146100; 15129097800; 59740862100; 55866018700; 15841008300; 7404724327
Landslide investigation with remote sensing and sensor network: From susceptibility mapping and scaled-down simulation towards in situ sensor network design
(2013) Remote Sensing, 5 (9), pp. 4319 - 4346, Cited 56 times.
DOI: 10.3390/rs5094319
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884681970&doi=10.3390%2Frs5094319&partnerID=40&md5=de86fa6064e74fb8b5fce75fa5c58cfe

AFFILIATIONS: Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China; Mapping and GIS Laboratory, The Ohio State University, Columbus, OH, United States
ABSTRACT: This paper presents an integrated approach to landslide research based on remote sensing and sensor networks. This approach is composed of three important parts: (i) landslide susceptibility mapping using remote-sensing techniques for susceptible determination of landslide spots; (ii) scaled-down landslide simulation experiments for validation of sensor network for landslide monitoring, and (iii) in situ sensor network deployment for intensified landslide monitoring. The study site is the Taziping landslide located in Hongkou Town (Sichuan, China). The landslide features generated by landslides triggered by the 2008 Wenchuan Earthquake were first extracted by means of object-oriented methods from the remote-sensing images before and after the landslides events. On the basis of correlations derived between spatial distribution of landslides and control factors, the landslide susceptibility mapping was carried out using the Artificial Neural Network (ANN) technique. Then the Taziping landslide, located in the above mentioned study area, was taken as an example to design and implement a scaled-down landslide simulation platform in Tongji University (Shanghai, China). The landslide monitoring sensors were carefully investigated and deployed for rainfall induced landslide simulation experiments. Finally, outcomes from the simulation experiments were adopted and employed to design the future in situ sensor network in Taziping landslide site where the sensor deployment is being implemented. © 2013 by the authors; licensee MDPI, Basel, Switzerland.
AUTHOR KEYWORDS: Landslide; Remote sensing; Sensor network; Susceptibility mapping
INDEX KEYWORDS: 2008 wenchuan earthquakes; Design and implements; Landslide monitoring; Landslide susceptibility mapping; Object oriented method; Rainfall induced landslides; Remote sensing images; Susceptibility mapping; Design; Experiments; Mapping; Neural networks; Remote sensing; Sensor networks; Landslides
REFERENCES: Schuster, Robert L., Socioeconomic significance of landslides, Special Report - National Research Council, Transportation Research Board, 247, pp. 12-35, (1996); 
Sassa, Kyoji, Landslides: A review of achievements in the first 5 years (2004-2009), Landslides, 6, 4, pp. 275-286, (2009); 
Delacourt, Christophe, Remote-sensing techniques for analysing landslide kinematics: A review, BSGF - Earth Sciences Bulletin, 178, 2, pp. 89-100, (2007); 
Metternicht, Graciela I., Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, 98, 2-3, pp. 284-303, (2005); 
Guzzetti, Fausto, Landslide inventory maps: New tools for an old problem, Earth-Science Reviews, 112, 1-2, pp. 42-66, (2012); 
Tung, Shihheng, Identification of the landslide using the satellite images and the digital image correlation method, Disaster Advances, 6, 4, pp. 4-9, (2013); 
Van Westen, Cees J., Spatial data for landslide susceptibility, hazard, and vulnerability assessment: An overview, Engineering Geology, 102, 3-4, pp. 112-131, (2008); 
Felícisimo, Á. M., Mapping landslide susceptibility with logistic regression, multiple adaptive regression splines, classification and regression trees, and maximum entropy methods: A comparative study, Landslides, 10, 2, pp. 175-189, (2013); 
Strozzi, Tazio, Interpretation of aerial photographs and satellite SAR interferometry for the inventory of landslides, Remote Sensing, 5, 5, pp. 2554-2570, (2013); 
Chauhan, Shivani, Landslide susceptibility zonation of the Chamoli region, Garhwal Himalayas, using logistic regression model, Landslides, 7, 4, pp. 411-423, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Li, J., Jin, X., Wei, Y., Zhang, H.
AUTHOR FULL NAMES: Li, Jun (37055859000); Jin, Xing (36681350800); Wei, Yongxiang (23978816600); Zhang, Hongcai (55438249600)
37055859000; 36681350800; 23978816600; 55438249600
Continuous estimates on the earthquake early warning magnitude by use of the near-field acceleration records
(2013) Earthquake Science, 26 (5), pp. 351 - 356, Cited 4 times.
DOI: 10.1007/s11589-013-0040-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889261785&doi=10.1007%2Fs11589-013-0040-1&partnerID=40&md5=6cd003dfdb8cb2f9103a1368f447fe1c

AFFILIATIONS: Earthquake Administration of Fujian Province, Fuzhou, Fujian, China; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Fuzhou University, Fuzhou, Fujian, China
ABSTRACT: In this article, the seismic records of Japan’s Kik-net are selected to measure the acceleration, displacement, and effective peak acceleration of each seismic record within a certain time after P wave, then a continuous estimation is given on earthquake early warning magnitude through statistical analysis method, and Wenchuan earthquake record is utilized to check the method. The results show that the reliability of earthquake early warning magnitude continuously increases with the increase of the seismic information, the biggest residual happens if the acceleration is adopted to fit earthquake magnitude, which may be caused by rich high-frequency components and large dispersion of peak value in acceleration record, the influence caused by the high-frequency components can be effectively reduced if the effective peak acceleration and peak displacement is adopted, it is estimated that the dispersion of earthquake magnitude obviously reduces, but it is easy for peak displacement to be affected by long-period drifting. In various components, the residual enlargement phenomenon at vertical direction is almost unobvious, thus it is recommended in this article that the effective peak acceleration at vertical direction is preferred to estimate earthquake early warning magnitude. Through adopting Wenchuan strong earthquake record to check the method mentioned in this article, it is found that this method can be used to quickly, stably, and accurately estimate the early warning magnitude of this earthquake, which shows that this method is completely applicable for earthquake early warning. © The Seismological Society of China, Institute of Geophysics, China Earthquake Administration and Springer-Verlag Berlin Heidelberg 2013.
AUTHOR KEYWORDS: Earthquake early warning; Effective peak value; Near-field acceleration record
REFERENCES: Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Journal of Japan Association for Earthquake Engineering, (2004); 
Grecksch, Gunnar, Statistical analysis of strong-motion accelerograms and its application to earthquake early-warning systems, Geophysical Journal International, 129, 1, pp. 113-123, (1997); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Nakamura, Yutaka, Earthquake alarm system for Japan Railways, Japanese Railway Engineering, 109, pp. 1-7, (1989); 
Wu, Yih-Min Min, Determination of earthquake early warning parameters, τc and Pd, for southern California, Geophysical Journal International, 170, 2, pp. 711-717, (2007); 
Wu, Yih-Min Min, Quick and reliable determination of magnitude for seismic early warning, Bulletin of the Seismological Society of America, 88, 5, pp. 1254-1259, (1998); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Jin, Xing, Real-time simulation of ground displacement by digital accelerograph record, Acta Seismologica Sinica, 27, 1, pp. 79-85, (2005); 
Workshop on Seismic Early Warning for European Cities Abstracts, (2004)
PUBLISHER: Seismological Society of China
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Bai, S.B., Cheng, C., Wang, J., Thiebes, B., Zhang, Z.-G.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Cheng, Chen (55662217700); Wang, Jian (55491249300); Thiebes, Benni (55668276300); Zhang, Zhigang (59643629200)
15830966700; 55662217700; 55491249300; 55668276300; 59643629200
Regional scale rainfall- and earthquake-triggered landslide susceptibility assessment in Wudu County, China
(2013) Journal of Mountain Science, 10 (5), pp. 743 - 753, Cited 18 times.
DOI: 10.1007/s11629-013-2432-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884787469&doi=10.1007%2Fs11629-013-2432-z&partnerID=40&md5=cf4c76bf762a6e817d83e14b24dc7952

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China
ABSTRACT: Wudu County in northwestern China frequently experiences large-scale landslide events. High-magnitude earthquakes and heavy rainfall events are the major triggering factors in the region. The aim of this research is to compare and combine landslide susceptibility assessments of rainfall-triggered and earthquake-triggered landslide events in the study area using Geographical Information System (GIS) and a logistic regression model. Two separate susceptibility maps were produced using inventories reflecting single landslide-triggering events, i.e., earthquakes and heavy rain storms. Two groups of landslides were utilized: one group containing all landslides triggered by extreme rainfall events between 1995 and 2003 and the other group containing slope failures caused by the 2008 Wenchuan earthquake. Subsequently, the individual maps were combined to illustrate the locations of maximum landslide probability. The use of the resulting three landslide susceptibility maps for landslide forecasting, spatial planning and for developing emergency response actions are discussed. The combined susceptibility map illustrates the total landslide susceptibility in the study area. © 2013 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: China; Earthquake; Landslides; Susceptibility assessment; Wudu County
REFERENCES: Akgun, Aykut, An easy-to-use MATLAB program (MamLand) for the assessment of landslide susceptibility using a Mamdani fuzzy algorithm, Computers and Geosciences, 38, 1, pp. 23-34, (2012); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Althuwaynee, Omar F., Application of an evidential belief function model in landslide susceptibility mapping, Computers and Geosciences, 44, pp. 120-135, (2012); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Ayalew, Lulseged, Landslides in Sado Island of Japan: Part II. GIS-based susceptibility mapping with comparisons of results from two methods and verifications, Engineering Geology, 81, 4, pp. 432-445, (2005); 
Bai, Shibiao, Pre-conditioning factors for rainfall and earthquake-triggered landslides, pp. 501-505, (2012); 
Proceedings of the International Conference Mountain Risks, (2010); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Bai, Shibiao, Combined landslide susceptibility mapping after Wenchuan earthquake at the Zhouqu segment in the Bailongjiang Basin, China, Catena, 99, pp. 18-25, (2012); 
Beguería, Santiago, Validation and evaluation of predictive models in hazard assessment and risk management, Natural Hazards, 37, 3, pp. 315-329, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900)
35184309900; 8246843900
Controlling parameter analyses and hazard mapping for earthquake-triggered landslides: An example from a square region in Beichuan County, Sichuan Province, China
(2013) Arabian Journal of Geosciences, 6 (10), pp. 3827 - 3839, Cited 34 times.
DOI: 10.1007/s12517-012-0646-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884203626&doi=10.1007%2Fs12517-012-0646-y&partnerID=40&md5=d6852a514db5a25c72b61623381532a6

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: On May 12, 2008, at 1428 hours (Beijing time), a catastrophic earthquake, with a magnitude of Ms 8.0, struck the Sichuan Province, China. About 200,000 landslides, as a secondary geological hazard associated with the earthquake, were triggered over a broad area. These landslides were of almost all types such as shallow, disrupted landslides, rock falls, deep-seated landslides, and rock avalanches. Some of these landslides damaged and destroyed large part of some towns, blocked roads, dammed rivers, and caused other serious damages. The purpose of this study is to detect correlations between landslide occurrence and the surface rupture plane, ground shaking conditions (measured by peak ground acceleration, PGA), lithology, slope gradient, slope aspect, topographic position, and distance from drainages by using two indices, landslide area percentage (LAP) and the landslide number density (LND), based on geographic information system (GIS) technology and statistical analysis method in a square region (study area) of Beichuan County, Sichuan Province, China. There were 5,096 landslides related with the earthquake which were delineated by visual interpretation and selected field checking throughout the study area. The total area (horizontal projection) of the 5,096 landslides is about 41.103 km2. The LAP, which is defined as the percentage of the plane area affected by landslides, was 10.276 %, and the LND, means the number of landslides per square kilometers, was 12.74 landslides/km2. Statistical analysis results show that both LAP and LND have a positive correlation with slope gradient and a negative correlation with distance from the surface rupture. However, the correlation between the occurrence of landslides with PGA, topographic position, and distance from drainages are uncertain, or has just a little positive correlation. The correlation between landslide and slope aspect also shows the effect of the directivity of the seismic wave. The Zbq formation had the most concentrated landslide activity with the LND value of 21.78 landslides/km2<inf>,</inf> and the ∈<inf>1</inf> q Gr. geological units had the highest LAP value. Furthermore, weight index (W <inf>i</inf>) model is performed with a GIS platform to derive landslide hazard index map. The success rate of the model was 71.615 % and, thus, it was valid. In addition, comparison of five landslide controlling parameters' influence on landslide occurrences was also carried out. © 2012 Saudi Society for Geosciences.
AUTHOR KEYWORDS: Geographic Information Systems (GIS); Landslide area percentage; Landslide hazard mapping; Landslide number density; Landslides; Statistical analysis; The 2008 Wenchuan earthquake
INDEX KEYWORDS: damage; earthquake magnitude; earthquake rupture; GIS; hazard assessment; landslide; S-wave; Sichuan earthquake 2008; slope dynamics; Beichuan; China; Sichuan
REFERENCES: Tien Bui, D., Spatial prediction of landslide hazards in Hoa Binh province (Vietnam): A comparative assessment of the efficacy of evidential belief functions and fuzzy logic models, Catena, 96, pp. 28-40, (2012); 
Tien Bui, D., Landslide susceptibility assessment in the Hoa Binh province of Vietnam: A comparison of the Levenberg-Marquardt and Bayesian regularized neural networks, Geomorphology, 171-172, pp. 12-29, (2012); 
Acta Geologica Sinica, (2009); 
Chigira, Masahiro, Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan, Engineering Geology, 82, 4, pp. 202-221, (2006); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Das, Josodhir D., Satellite data in a rapid analysis of Kashmir earthquake (October 2005) triggered landslide pattern and river water turbidity in and around the epicentral region, International Journal of Remote Sensing, 28, 8, pp. 1835-1842, (2007); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Fukuoka, Hiroshi, Distribution of landslides triggered by the 1995 Hyogo-ken Nanbu earthquake and long runout mechanism of the Takarazuka golf course landslide, Journal of Physics of the Earth, 45, 2, pp. 83-90, (1997); 
Gallus, Dominik, Classification of landslide susceptibility in the development of early warning systems, Lecture Notes in Geoinformation and Cartography, pp. 55-75, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Yao, Q., Wang, Y.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Yao, Qi (57207434310); Wang, Yanying (57188982729)
35184309900; 8246843900; 57207434310; 57188982729
GIS-based bivariate statistical modelling for earthquake-triggered landslides susceptibility mapping related to the 2008 Wenchuan earthquake, China
(2013) Quarterly Journal of Engineering Geology and Hydrogeology, 46 (2), pp. 221 - 236, Cited 78 times.
DOI: 10.1144/qjegh2012-006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881042629&doi=10.1144%2Fqjegh2012-006&partnerID=40&md5=7fa1a1da2fc4f686e73ac1ba13323796

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; China Earthquake Networks Center, Beijing, China; College of Urban and Environmental Sciences, Northeast Normal University, Changchun, Jilin, China
ABSTRACT: The main purpose of this research is to evaluate the modelling capability and predictive power of a bivariate statistical method for earthquake-triggered landslide susceptibility mapping. A weight index (Wi) model was developed for the 2008 Wenchuan earthquake region in Sichuan Province, China, using a wide range of optical remote sensing data, and carried out on the basis of a geographic information system (GIS) platform. The 2008 Wenchuan earthquake triggered 196007 landslides, with a total area of 1150.43 km2, in an approximately oblong area around the Yingxiu-Beichuan coseismic surface fault-rupture (the Yingxiu-Beichuan fault). The landslides of the study area were mapped using visual interpretation of high-resolution satellite images and aerial photographs, both pre- and post-earth-quake, and checked in the field at various locations. As a consequence, a nearly complete inventory of landslides triggered by the Wenchuan earthquake was constructed. Topographic and geological data and earthquake-related information were collected, processed and constructed into a spatial database using GIS and image processing technologies. A total of 10 controlling parameters associated with the earthquake-triggered landslides were selected, including elevation, slope angle, slope aspect, slope curvature, slope position, lithology, seismic intensity, peak ground acceleration (PGA), distance from the Yingxiu-Beichuan fault, and distance along this fault. To assist with the development of the model, the complete dataset of 196007 landslides was randomly partitioned into two subsets; a training data-set, which contains 70% of the data (137204 landslides, with a total area of 809.96 km2), and a testing dataset accounting for 30% of the data (58803 landslides, with a total area of 340.47 km2). A landslide susceptibility index map was generated using the training dataset, the 10 impact factors, and the Wi model. In addition, for a conditionally dependent factor analysis, seven other factor-combination cases were also used to construct landslide susceptibility index maps. Finally, these eight landslide suscep-tibility maps were compared with the training data and testing data to obtain model capability (success rate) and predictive power (predictive rate) information. The validation results show that the success and predictive rates of the Wi modelling exceeded 90% for the approaches that include the use of seismic factors. The final landslide susceptibility map can be used to identify and delineate unstable suscepti-bility-prone areas, and help planners to choose favourable locations for development schemes, such as infrastructure, construction and environmental protection schemes. The generic component of this research would allow application in other regions affected by high-intensity earthquakes and unstable terrain covering very large areas. © 2013 The Geological Society of London.
INDEX KEYWORDS: 2008 wenchuan earthquakes; Earthquake-triggered landslides; High resolution satellite images; Image processing technology; Landslide susceptibility; Optical remote sensing data; Peak ground acceleration; Susceptibility mapping; Faulting; Geographic information systems; Image processing; Landslides; Lithology; Maps; Optical data processing; Statistical tests; Earthquakes; aerial photography; GIS; hazard assessment; landslide; mapping; numerical model; remote sensing; satellite imagery; Sichuan earthquake 2008; statistical analysis; China; Sichuan
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Arora, Manoj Kumar, An artificial neural network approach for landslide hazard zonation in the bhagirathi (ganga) valley, himalayas, International Journal of Remote Sensing, 25, 3, pp. 559-572, (2004); 
Baeza, Cristina, Assessment of shallow landslide susceptibility by means of multivariate statistical techniques, Earth Surface Processes and Landforms, 26, 12, pp. 1251-1263, (2001); 
Bai, Shibiao, GIS-Based and Data-Driven Bivariate Landslide-Susceptibility Mapping in the Three Gorges Area, China Project supported by the National Natural Science Foundation of China (Nos. 40801212 and 49971064), the Foundation for China Geological Survey (No. 200316000035), the Natural Science Foundation of Jiangsu Higher Education Institutions of China (No. 06KJB170063), Pedosphere, 19, 1, pp. 14-20, (2009); 
Bednarik, Martin, Landslide susceptibility assessment of the Kraľovany-Liptovský Mikuláš railway case study, Physics and Chemistry of the Earth, 35, 3-5, pp. 162-171, (2010); 
Binaghi, Elisabetta, Slope instability zonation: a comparison between certainty factor and fuzzy Dempster-Shafer approaches, Natural Hazards, 17, 1, pp. 77-97, (1998); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Carrara, Alberto, Use of GIS technology in the prediction and monitoring of landslide hazard, Natural Hazards, 20, 2-3, pp. 117-135, (1999); 
Chung, Chungjo F., Probabilistic prediction models for landslide hazard mapping, Photogrammetric Engineering and Remote Sensing, 65, 12, pp. 1389-1399, (1999); 
Dahal, Ranjan Kumar, Predictive modelling of rainfall-induced landslide hazard in the Lesser Himalaya of Nepal based on weights-of-evidence, Geomorphology, 102, 3-4, pp. 496-510, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

2013 International Conference on Civil, Architecture and Building Materials, 3rd CEABM 2013
(2013) Applied Mechanics and Materials, 357-360, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883239582&partnerID=40&md5=0a53d8a149ee047c45900ba937a1ab20

ABSTRACT: The proceedings contain 580 papers. The special focus in this conference is on Architectural Design and Its Theory, Architectural Environment and Equipment Engineering, Ecological Architecture, Traditional Construction Materials, Advanced Construction Materials, Control of Quality Engineering, Urban Planning and Design, Landscape Planning and Design, Project Management in Building, Engineering Management and Engineering Education. The topics include: Construction and utilization of post-earthquake waste building materials; analysis of different building materials used in heritage protected areas in north China; the research of folk house development in Lhasa area; expression of form on the steel building design; new trend in facilities for the elders in Japan - small multi-care facilities; renewal patterns of the administrative office buildings; a study on window design optimization for residences in severe cold zones; analysis of the development of Chinese commercial buildings; art of light and shadow reflected in architecture; research on the method of architecture design idea; the innovative design of the new countryside residential building; researches on the new characteristic residences in the eastern Henan; the influence of early sound direction on apparent source width (ASW); symbolic representation of indigenous architectures in Meishan region; developing a system for evaluating roof shape design; based on parametric design to analysis the skin design of the cultural complex; study on the rationality of Zaha Hadid's creavity in architecture; the research on south dwellings building - Fujian dwellings for example; building national form of Chinese contemporary residential design; study on regional expression of space design in city commercial pedestrian street; culture and arts experience in HOPSCA; technique transmission of Flemish church buildings in China: works of Scheut fathers; the influence of architectural culture on architectural design; study on humanistic factors in design of kindergarten; topology theory application in exhibition design; analysis of regional characteristics for Chinese traditional dwelling; on the architectural design of university libraries; planning and design of contemporary villa district; attention to rural green-building design in China; chasing the essence of architecture; exploration of modular build of architectural space; the analysis of design thinking of harmonious bus station; the complex network of architectural design; study on description method of architectural plan; analysis of architectural discourse in 1990s; a trip for the works of epidermis artists; on the application of traditional elements in modern environmental art design; research on green building and occupant satisfaction; the factors analysis of increasing community emotion; research on eco-architecture-oriented architectural education; photosynthesis of plant and photovoltaic integrated application of buildings; the green concept used in the field of architecture design; on-site inspection and analysis on earth architecture's enclosure construction; research on the ecosystem of architecture design; localized ecology design of the architectural interface; discussions on the ecological designing of the preschool constructions; green industrial building design for hot summer and cold winter zone; influence of sinter temperature on the hardness of fly ash based glass ceramics; experimental study on cement clinker particles under impact force; optimization of high concrete retaining wall structure; assessment model of concrete durability in complicated environment; develop high-strength concrete of C60 with local raw material; steel rod stability and inelastic buckling study; study on high amount mineral admixtures concrete performance; the impact molding and test results of high fly ash block; self-healing ability of smart coating for anticorrosion of reinforcing steel; estimating on creep strain for ready-mixed concrete during shrinkage; preliminary experimental study on self-leveling ground mortar; experimental study of alkali-activated red mud cement material; on the application of decoration materials in architecture; researches on concrete carbonation; triaxial research of waste tire granules, cement and soil mixtures; mechanical strength and microstructure analysis of cementitious wheat straw composite; research of producing aerated concrete with quartz tail-sands; study on recycling method of waste concrete economic; study on fracture criterion for concrete and other brittle materials; study on the compressive strength and mixing of ultra-high performance concrete; significance of blast furnace slag as coarse aggregate in self-compacting concrete; mechanical property of coal ash mixed with clay; the anti-shear capacity of abnormal joint of steel reinforced concrete; prediction of long-term strength of concrete based on artificial neural network; high performance of stone chippings concrete with high fine content; properties of waste-based geopolymer building blocks; study on the influence of freeze-thaw on the carbonation property of fly ash concrete; study on production of autoclaved aerated concrete by coal gangue fly ash; effect of fly ash and nano-caco3 on the viscosity of cement paste; dispersion of mutiwall carbon nanotubes; mechanical property of brucite fiber reinforced composite material; prediction of the elastic modulus of self-compacting concrete based on SVM; refractory performance study on foamed concrete and concrete; experimental research on bamboo fiber reinforced concrete; study on green building materials development in Hunan; the development of green building materials trend in China; application on the sprayed FRPC in engineering; general introduction of the performance of sprayed FRPC; development trend of world expo new building materials; summary of application of intelligent materials in building; the influence of clay to water-reducing effect of polycarboxylic; experimental research on coal gangue grouting material for gob filling; techno-economic analysis of fiber reinforced polymer substation; research of performance of low amount of cement manufactured-sand concrete; relations between concrete structural parameters and abrasion resistance; microstructure of thin wall formed by multi-layer laser cladding; experimental study on strength of recycled concrete; preparation of refractory fiber cardboard for building insulation; regulation of fine grained concrete efflorescence process; influences of limestone powder on the performance of self-compacting concrete; innovative applications of membrane materials in exhibition design; study on slag powder concrete preparation in Baotou area; preparation and research of high-temperature foam ceramic; metal coat of modern architecture; microstructure and finite element analysis of recycled aggregate concrete; the effect of viscous materials making on self-compacting concrete; experimental study of hygroscopicity of lunar soil simulant; research on strain transfer of embedded BOTDA sensors analyzed by FEM; study on the quality control of the concealed works of construction project; research on construction quality control measures of key construction works; parameters identification for nonlinear duffing system based on wavelet transformation; bridge bored pile construction management and accident treatment; analysis of fire intelligent inspection system; the analysis on influential factors of building project; analysis of living character of Ranzhuang historical and cultural village; Hubei new town planning system research; analysis on characteristics of road planning of university campus; the urban old building reconstruction design based on sustainable development context; study on positive significance of humanity factor in the city planning; the research on the site selection of tourist resort based on GIS; spatial layout of linear cities in eastern region of northwest China; planning control and guidance research on residential differentiation; the study of arrangement model and potential maximization of rural land; relocation pattern for minority villages stricken by Wenchuan earthquake; methods of reusing the old industrial sites; application of GIS in urban disaster prevention park planning; study on the space design of urban commercial district in cold areas; study on authenticity protection and restoration of residential historic district; historical performance evaluation of city fire fighting and rescue force; influencing factors study of the contemporary spatial expansion of Wuhan; exploration on the eco-village planning from the perspective of low-carbon; strategies for protection and development of traditional village; the cause analysis and countermeasures of waterlogging in Wuhan; a brief analysis of the urban street design based on TOD mode; the cultural heritage protection in the process of urbanization; research on the urbanization path in China; a study on citizen's preference for waterscape design in urban open spaces; landscape regeneration strategy of waste quarries in urban area; application of waste in landscape environment restoration; analysis of the function of urban sculpture in landscape environment; research on the facility factors in the hospital healing environmental design; the effect of grain size on landscape indices analysis of Shijiazhuang; the application of natural building stones material in the modern landscape; environment design of community suitable for elderly living; economics analysis of landscape based on SCM; analysis of China's highway ecological landscape design example; analysis on plant design in landscape design; status analysis of Linpan protection in land consolidation of Chengdu plain; analysis on color configuration of plants in landscape design; application of AHP in highway landscape assessment system; a discussion on content and methodology of city landscape.
CONFERENCE NAME: 3rd International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2013
CONFERENCE DATE: 2013-05-24 through 2013-05-26
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Zheng, W.-J., Wei, Z.-Y., Tan, X.-B., Han, Z.-J., Li, C.-Y., Liang, M.-J., Li, Z.-Q., Wang, H., Wang, M.-M., Ren, J.-J., Zhang, S.-M., He, Z.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Zheng, Wenjun (7403566257); Wei, Zhanyu (36112505700); Tan, Xinbin (35184143700); Han, Zhujun (7402853597); Li, Chuanyou (55695997400); Liang, Mingjian (27170183900); Li, Zhiqiang (55707073300); Wang, Hu (35575025100); Wang, Mingming (35756975200); Ren, Junjie (8728895600); Zhang, Shimin (8728895300); He, Zhongtai (36854425000)
35184309900; 8246843900; 7403566257; 36112505700; 35184143700; 7402853597; 55695997400; 27170183900; 55707073300; 35575025100; 35756975200; 8728895600; 8728895300; 36854425000
Landslides triggered by the April 20, 2013 Lushan, Sichuan Province MS 7.0 strong earthquake of China
(2013) Dizhen Dizhi, 35 (3), pp. 641 - 660, Cited 40 times.
DOI: 10.3969/j.issn.0253-4967.2013.03.018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887510329&doi=10.3969%2Fj.issn.0253-4967.2013.03.018&partnerID=40&md5=11dc4324cf73e8284816f047ba0a81c4

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Earthquake Administration of Sichuan Province, Chengdu, Sichuan, China; Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: On April 20, 2013, a strong earthquake of M<inf>S</inf> 7.0 struck the Lushan County, Sichuan Province of China. In this paper, basic information of the April 20, 2013 Lushan earthquake, historical earthquakes in the Lushan earthquake struck area and associated historical earthquake-triggered landslides were introduced firstly. We delineated the probable spatial distribution boundary of landslides triggered by the Lushan earthquake based on correlations between the 2008 Wenchuan earthquake-triggered landslides and associated peak ground acceleration (PGA). According to earthquake-triggered landslides classification principles, landslides triggered by the earthquake are divided into three main categories: disrupted landslides, coherent landslides, and flow landslides. The first main category includes five types: rock falls, disrupted rock slides, rock avalanches, soil falls, and disrupted soil slides. The second main category includes two types of soil slumps and slow earth flows. The type of flow landslides is mainly rapid flow slides. Three disrupted landslides, including rock falls, disrupted rock slides, and soil falls are the most common types of landslides triggered by the earthquake. We preliminary mapped 3883 landslides based on available high-resolution aerial photographs taken soon after the earthquake. In addition, the effect of aftershocks on the landslides, comparisons of landslides triggered by the Lushan earthquake with landslides triggered by other earthquake events, and guidance for subsequent landslides detailed interpretation based on high-resolution remote sensing images were discussed respectively. In conclusion, based on quick field investigations to the Lushan earthquake, the classifications, morphology of source area, motion and accumulation area of many earthquake-triggered landslides were recorded before the landslide might be reconstructed by human factors, aftershocks, and rainfall etc. It has important significance to earthquake-triggered landslide hazard mitigation in earthquake struck area and the scientific research of subsequent landslides related to the Lushan earthquake.
AUTHOR KEYWORDS: Earthquake triggered landslides; Emergency field investigation; The MS 7.0 Lushan earthquake
INDEX KEYWORDS: Aerial Photographs; Distribution boundary; Earthquake-triggered landslides; Field investigation; High-resolution remote sensing images; Historical earthquakes; Peak ground acceleration; Scientific researches; Human computer interaction; Image reconstruction; Landslides; Rock bursts; Soils; Earthquakes; aerial photograph; earthquake magnitude; hazard assessment; image analysis; landslide; Lushan earthquake 2013; peak acceleration; remote sensing; slumping; China; Lushan; Sichuan; Taiwan
REFERENCES: Chen, Lichun, The Lushan MS7.0 earthquake and activity of the southern segment of the Longmenshan fault zone, Chinese Science Bulletin, 58, 28-29, pp. 3475-3482, (2013); 
Earth Science Frontiers, (2010); 
Catalogue of Chinese Historical Strong Earthquakes, (1995); 
undefined, (2013); 
undefined, (2013); 
Han, Zhujun, The surface rupture signs of the Lushan "4. 20" MS 7.0 earthquake at Longmen Township, Lushan County and its discussion, Dizhen Dizhi, 35, 2, pp. 388-397, (2013); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
undefined, (2013); 
Preliminary Result for Rupture Process of Apr 20 2013 Mw6 7 Earthquake Lushan Ya an China, (2013); 
Science Technology Review, (2012)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Dai, F., Wu, Z., He, H., Shi, F., Wu, X., Xu, S.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Dai, Fuchu (7102055666); Wu, Zhide (35184326800); He, Honglin (36123065500); Shi, Feng (57202464002); Wu, Xiyan (55567917900); Xu, Suning (25931301000)
35184309900; 8246843900; 7102055666; 35184326800; 36123065500; 57202464002; 55567917900; 25931301000
Application of an incomplete landslide inventory, logistic regression model and its validation for landslide susceptibility mapping related to the May 12, 2008 Wenchuan earthquake of China
(2013) Natural Hazards, 68 (2), pp. 883 - 900, Cited 149 times.
DOI: 10.1007/s11069-013-0661-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881061020&doi=10.1007%2Fs11069-013-0661-7&partnerID=40&md5=d4acb3ae5b173856a74a5da03415be0c

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China; Langfang Branch of PetroChina, Research Institute of Petroleum Exploration and Development, Beijing, China; China Institute of Geo-Environmental Monitoring, Beijing, Beijing, China
ABSTRACT: The main purpose of this paper is to present the use of multi-resource remote sensing data, an incomplete landslide inventory, GIS technique and logistic regression model for landslide susceptibility mapping related to the May 12, 2008 Wenchuan earthquake of China. Landslide location polygons were delineated from visual interpretation of aerial photographs, satellite images in high resolutions, and verified by selecting field investigations. Eight factors, including slope angle, slope aspect, elevation, distance from drainages, distance from roads, distance from main faults, seismic intensity and lithology were selected as controlling factors for earthquake-triggered landslide susceptibility mapping. Qualitative susceptibility analyses were carried out using the map overlaying techniques in GIS platform. The validation result showed a success rate of 82.751 % between the susceptibility probability index map and the location of the initial landslide inventory. The predictive rate of 86.930 % was obtained by comparing the additional landslide polygons and the landslide susceptibility probability index map. Both the success rate and the predictive rate show sufficient agreement between the landslide susceptibility map and the existing landslide data, and good predictive power for spatial prediction of the earthquake-triggered landslides. © 2013 Springer Science+Business Media Dordrecht.
AUTHOR KEYWORDS: Landslide susceptibility mapping; Landslides; Logistic regression; Predictive rate; Success rate; The 2008 Wenchuan earthquake
INDEX KEYWORDS: aerial photograph; earthquake intensity; fault zone; GIS; hazard assessment; inventory; landslide; lithology; logistics; mapping; model test; model validation; regression analysis; remote sensing; satellite imagery; Sichuan earthquake 2008; trigger mechanism; China
REFERENCES: Althuwaynee, Omar F., Application of an evidential belief function model in landslide susceptibility mapping, Computers and Geosciences, 44, pp. 120-135, (2012); 
Arora, Manoj Kumar, An artificial neural network approach for landslide hazard zonation in the bhagirathi (ganga) valley, himalayas, International Journal of Remote Sensing, 25, 3, pp. 559-572, (2004); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Bednarik, Martin, Landslide susceptibility assessment of the Kraľovany-Liptovský Mikuláš railway case study, Physics and Chemistry of the Earth, 35, 3-5, pp. 162-171, (2010); 
Binaghi, Elisabetta, Slope instability zonation: a comparison between certainty factor and fuzzy Dempster-Shafer approaches, Natural Hazards, 17, 1, pp. 77-97, (1998); 
Binaghi, Elisabetta, Prediction of displacements in unstable areas using a neural model, Natural Hazards, 32, 1, pp. 135-154, (2004); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Tien Bui, D., Landslide susceptibility assessment in the Hoa Binh province of Vietnam: A comparison of the Levenberg-Marquardt and Bayesian regularized neural networks, Geomorphology, 171-172, pp. 12-29, (2012); 
Tien Bui, D., Regional prediction of landslide hazard using probability analysis of intense rainfall in the Hoa Binh province, Vietnam, Natural Hazards, 66, 2, pp. 707-730, (2013); 
Caniani, Donatella, Neural networks and landslide susceptibility: A case study of the urban area of Potenza, Natural Hazards, 45, 1, pp. 55-72, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, N., Liu, L.-H., Deng, M.-F., Yang, C.-L., He, J.
AUTHOR FULL NAMES: Chen, Ningsheng (8726157200); Liu, Lihong (55885301200); Deng, Mingfeng (36668370200); Yang, Chen Lin (59878902600); He, Jie (55233337200)
8726157200; 55885301200; 36668370200; 59878902600; 55233337200
Tendency prediction and prevention strategy of geohazards triggered by Lushan Ms 7 earthquake, Sichuan Province, China
(2013) Journal of Chengdu University of Technology (Science and Technology Edition), 40 (4), pp. 371 - 378, Cited 4 times.
DOI: 10.3969/j.issn.1671-9727.2013.04.03
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885674622&doi=10.3969%2Fj.issn.1671-9727.2013.04.03&partnerID=40&md5=892a3b57fabf1caab385da940a68fc68

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, China
ABSTRACT: A large number of secondary geological disasters were induced by the 4 • 20 Lushan earthquake in Sichuan province. In order to assess the secondary geological hazards, this paper analyzes the effects of topography, geological conditions, earthquakes and drought on debris flow development, and then sets up the assessment indexes. A speedy quantitative assessment of hazards sensibility is carried out using GIS spatial analysis technology. The results indicate that the areas of the high probable, mid-probable, low probable geological disasters in Sichuan province in 2013 are 99 700 km2, 66 700 km2, 14 100 km2, respectively. The high probable geological disasters will be distributed over the affected areas by the Lushan earthquake and the Wenchuan earthquake, and the drought areas in the south and southeast of Sichuan province. Based on the above, the suggestions of prevention and control are put forward.
AUTHOR KEYWORDS: Drought; Geological hazard; Lushan earthquake; Tendency prediction
INDEX KEYWORDS: earthquake event; earthquake mechanism; GIS; hazard assessment; prediction; seismic hazard; Sichuan earthquake 2008; spatial analysis; structural geology; China; Sichuan
REFERENCES: Geology and Prospecting, (2006); 
Journal of Mountain Science, (2003); 
Bulletin of Soil and Water Conservation, (1989); 
Journal of Mountain Science, (2006); 
Ni, Huayong, Formation and characteristics of post-earthquake debris flow: A case study from Wenjia gully in Mianzhu, Sichuan, SW China, Natural Hazards, 61, 2, pp. 317-335, (2012); 
Tang, Chuan, Catastrophic debris flows on 13 August 2010 in the Qingping area, southwestern China: The combined effects of a strong earthquake and subsequent rainstorms, Geomorphology, 139-140, pp. 559-576, (2012); 
Yu, Bin, Case study of a giant debris flow in the Wenjia Gully, Sichuan Province, China, Natural Hazards, 65, 1, pp. 835-849, (2013); 
Journal of Engineering Geology, (2011); 
Tang, Chuan, Field investigation and research on giant debris flow on August 14, 2010 in Yingxiu town, epicenter of Wenchuan earthquake, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36, 1, pp. 172-180, (2011); 
Journal of Engineering Geology, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, Y., Yao, L., Guo, C.
AUTHOR FULL NAMES: Huang, Yidan (36618861800); Yao, Lingkan (7201688064); Guo, Chenwen (55755754300)
36618861800; 7201688064; 55755754300
Distribution law of landslides triggered by earthquake based on cellular automata
(2013) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 48 (4), pp. 609 - 615, Cited 9 times.
DOI: 10.3969/j.issn.0258-2724.2013.04.004
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84882789065&doi=10.3969%2Fj.issn.0258-2724.2013.04.004&partnerID=40&md5=e7e0ac7248cd6f999c3bc5e4217bbdb4

AFFILIATIONS: School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; MOE Key Laboratory of High-Speed Railway Engineering, Chengdu, Sichuan, China; Sichuan Key Laboratory of Seismic Engineering and Technology, Chengdu, Sichuan, China
ABSTRACT: In order to interpret the mechanism of distribution of landslides triggered by earthquake from a physical point of view, typical sections in earthquake zones in the Wenchuan earthquake were investigated, and related remote sensing data was interpreted. The result shows that there exists a negative power-law relationship between the volume and number of landslides in IX seismic intensity zone of the Wenchuan earthquake, and the same is true between the area and frequency of landslides in X intensity seismic zone. However, the relationship changes into a lognormal distribution in XI seismic intensity zone. In addition, cellular automata was used to simulate landslides. The cellular automaton simulation reveals that with the change of disturbance intensity, the dynamical mechanism of sand-pile model is from a strong power-law to a weak power law, then to a lognormal distribution. Under the conceptual framework of self-organized criticality, it is proved that the distribution model of landslides in different seismic intensity zones has a universal law. The research results may not only be used to guide inventory of landslides triggered by the Wenchuan earthquake, but also provide a scientific basis for mountain disaster assessment in high seismic intensity zones.
AUTHOR KEYWORDS: Cellular automata; Distribution law; Landslide; Self-organized criticality (SOC); Wenchuan earthquake
INDEX KEYWORDS: Conceptual frameworks; Distribution law; Dynamical mechanisms; High seismic intensities; Log-normal distribution; Power-law relationship; Self-organized criticality; Wenchuan Earthquake; Cellular automata; Computer simulation; Criticality (nuclear fission); Earthquakes; Piles; Landslides
REFERENCES: Journal of Geological Hazards and Environment Preservation, (2009); 
Science Technology Review, (2012); 
Hu, Yuanxin, Three-parameter inverse-gamma probability distribution model of incomplete landslide inventory, Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology), 42, 10, pp. 3176-3181, (2011); 
Xu, Chong, GIS-based support vector machine modeling of earthquake-triggered landslide susceptibility in the Jianjiang River watershed, China, Geomorphology, 145-146, pp. 70-80, (2012); 
Xu, Chong, Comparison of different models for susceptibility mapping of earthquake triggered landslides related with the 2008 Wenchuan earthquake in China, Computers and Geosciences, 46, pp. 317-329, (2012); 
Xu, Chong, Landslide hazard mapping using GIS and weight of evidence model in Qingshui River watershed of 2008 Wenchuan earthquake struck region, Journal of Earth Science, 23, 1, pp. 97-120, (2012); 
Malamud, Bruce D., Landslide inventories and their statistical properties, Earth Surface Processes and Landforms, 29, 6, pp. 687-711, (2004); 
Bak, Per, Self-organized criticality: An explanation of the 1/f noise, Physical Review Letters, 59, 4, pp. 381-384, (1987); 
Held, Glenn A., Experimental study of critical-mass fluctuations in an evolving sandpile, Physical Review Letters, 65, 9, pp. 1120-1123, (1990); 
Science in China Series E, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900)
35184309900; 8246843900
Response rate of seismic slope mass movements related to 2008 Wenchuan Earthquake and its spatial distribution analysis
(2013) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 32 (SUPPL.2), pp. 3888 - 3908, Cited 20 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888229754&partnerID=40&md5=4131cc3cadf313d351cd2384c61062b1

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: As the main phenomenon of slope mass movement response on earthquake, research of earthquake triggered landslides has important practical applications and theoretical scientific significances, especially related to the 2008 Ms 8.0 Wenchuan Earthquake. Landslides caused by the earthquake are widespread concerned due to they caused strong landscape changed, enormous loss of life and property damages. In present research, the concept of response rate of seismic slope mass movement(RRSSMM) was proposed. In the first stage, a landslide inventory map was prepared using the landslides triggered by the Wenchuan Earthquake, and was delineated from interpretation of aerial photographs, and field surveys. In the second stage, distribution raster and isoline map of RRSSMM are constructed based on "area-volume" correlation of landslides per 1 km2 grid cells. Next, Area distribution map of RRSSMM was constructed, and it showed that relationship of frequency-RRSSMM or area-RRSSMM in coincidence with power law in range of RRSSMM less than or equal to 10 m. It is showed that the maximum RRSSMM value appears at the position of Daguangbao landslide (the largest landslide triggered by the Wenchuan Earthquake), up to 47.9235 m. Areas of RRSSMM value exceeding 1 m almost appear in the northwest facing areas, on the hanging wall, of a section of Yingxiu-Beichuan fault (from Yingxiu Town to Beichuan County). Those areas of high RRSSMM values correspond to hanging wall of thrust fault. It is indicated that strong controlling of earthquake on landslide occurrences on hanging wall of thrust fault. Spatial distribution analysis of RRSSMM controlled by different landslide conditioning factors were carried out base on GIS technology and statistical theory. These landslide conditioning factors include topographic factors, geologic factors and seismic factors, such as, elevation, slope angle, slope aspect, slope curvature, slope position, distance from drainages, lithology, distance from the epicenter, distance from the Yingxiu-Beichuan fault, distance along the Yingxiu-Beichuan fault, peak ground acceleration(PGA), and seismic intensity. The statistical results show that RRSSMM has positive correlation with slope angle, PGA, and seismic intensity, and negative correlation with distance from drainages, distance from the epicenter, and distance from the Yingxiu-Beichuan surface fault-rupture. It also represents the maximum value of RRSSMM appears between 1600-1800 m ranges in elevation. The highest RRSSMM value has preferred orientation, dominated by the eastern facing. There were small RRSSMM close to zero for plan curvature. For slope position, middle slope, lower slope and valley occupy the highest RRSSMM values. The two lithology groups of sandstone, siltstone (Z) and sandstone, siltstone, chert, slate (∈) had the highest RRSSMM values. The statistical results of RRSSMM along the Yingxiu-Beichuan fault show that the RRSSMM strongly affected by fault in thrusting movement feature. The final RRSSMM distribution data is of great significance on rivers and geomorphic evolution, and debris flow researches, and it can be timely shared to researchers in related fields, such as, tectonic geomorphology, engineering geology, environmental geology, and geological hazards etc. Research methods in this research can be applied to other regional seismic landslide events.
AUTHOR KEYWORDS: Engineering geology; Inventory; Response rate of seismic slope mass movement(RRSSMM); Spatial distribution; Statistical analysis; Wenchuan Earthquake triggered landslides
INDEX KEYWORDS: 2008 wenchuan earthquakes; Earthquake-triggered landslides; Inventory; Peak ground acceleration; Preferred orientations; Seismic slope; Spatial distribution analysis; Wenchuan Earthquake; Earthquakes; Engineering geology; Facings; Landslides; Lithology; Research; Sandstone; Spatial distribution; Statistical methods; Surveys; Faulting
REFERENCES: Journal of Remote Sensing, (2009); 
Science Technology Review, (2009); 
Journal of Engineering Geology, (2008); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Geological Hazards and Environment Preservation, (2009); 
Journal of Mountain Science, (2009); 
Science of Soil and Water Conservation, (2009); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Parker, Robert N., Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth, Nature Geoscience, 4, 7, pp. 449-452, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ying, D.-L., Li, Z.-Q., Zeng, Q., Li, Z.-J., Wan, S.-S., Hang, W.-Y., Li, H.-K., Ying, W.-F.
AUTHOR FULL NAMES: Ying, Danling (15623950400); Li, Zhongquan (8132866000); Zeng, Qing (57199962070); Li, Zhijun (58741929200); Wan, Shuangshuang (59072259700); Hang, Wenyan (55834260800); Li, Hongkui (15623754000); Ying, Wenfeng (55834952200)
15623950400; 8132866000; 57199962070; 58741929200; 59072259700; 55834260800; 15623754000; 55834952200
Preliminary analysis of causative faults of Lushan earthquake and Wenchuan earthquake in Sichuan, China
(2013) Journal of Chengdu University of Technology (Science and Technology Edition), 40 (3), pp. 250 - 256, Cited 2 times.
DOI: 10.3969/j.issn.1671-9727.2013.03.04
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883013074&doi=10.3969%2Fj.issn.1671-9727.2013.03.04&partnerID=40&md5=9bbc4e086da4e9209c41be71e6c5f334

AFFILIATIONS: School of Earth and Space Sciences, Peking University, Beijing, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China; Research Institute of Exploration and Development, China National Petroleum Corporation, Beijing, China; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, China
ABSTRACT: The 7.0 magnitude earthquake occurred in Lushan County (epicenter: 30.3 degrees north latitude and 103.0 degrees east longitude) of Ya'an City in Sichuan at 8:02 a. m. on April 20, 2013. It is another destructive earthquake after the "5 ·12" Wenchuan earthquake. On the basis of data on remote sensing, DEM, surface geology and the seismic profiles of the Lushan quake-struck zone, the paper analyzes the epicenter data, earthquake mechanism, the aftershocks distribution data and surface rupture published online. This paper concludes preliminary that the earthquake-triggering fracture of the Lushan earthquake should be the ventral buried fault or the new fracture in the southwest within the basin. And the comprehensive comparison between the Lushan earthquake and the Wenchuan earthquake shows that both of them are tectonic earthquakes. As viewed from tectonic dynamics, the authors consider that the two earthquakes are relevant to the northward extrusion and collision of the Indian Ocean Plate. However, there are differences between them about their earthquake-triggering fractures and the characteristics of the earthquake-triggering tectonic unit. Above all, the authors conclude that they should be two independent earthquakes.
AUTHOR KEYWORDS: Causative fault; Lushan earthquake; Tectonic unit; Wenchuan earthquake
INDEX KEYWORDS: aftershock; earthquake epicenter; earthquake event; earthquake mechanism; earthquake trigger; Sichuan earthquake 2008; China; Sichuan
REFERENCES: General Geology M, (2007); 
Academician Said that Lushan Earthquake Was the Aftershock of Wenchuan Earthquake; 
Lushan Earthquake Was Not the Aftershock of Wenchuan Earthquake; 
Aftershock or Independent Earthquake; 
Risk Evaluation Reports about Lushan Earthquake; 
It is Impossible that Lushan Earthquake Was the Aftershock of Wenchuan Earthquake; 
Hidden Fault the Real Killer of Lushan Earthquake; 
Fault Zones of Longmen Mountain and Big Earthquake; 
Ya an Earthquake is A Thrust Earthquake but is Not A Wenchuan Aftershock; 
Dispute on Whether the Ya N Earthquake is A Wenchuan Aftershock or Not
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, W., Huang, R., Tang, C., Xu, Q., Van Westen, C.
AUTHOR FULL NAMES: Li, Weile (25936551300); Huang, Runqiu (55835407700); Tang, Chuan (35932953300); Xu, Qiang (56506033600); Van Westen, Cees J. (6701664942)
25936551300; 55835407700; 35932953300; 56506033600; 6701664942
Co-seismic landslide inventory and susceptibility mapping in the 2008 Wenchuan earthquake disaster area, China
(2013) Journal of Mountain Science, 10 (3), pp. 339 - 354, Cited 48 times.
DOI: 10.1007/s11629-013-2471-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878326069&doi=10.1007%2Fs11629-013-2471-5&partnerID=40&md5=e7f14f3867f8f13ec3dc7d0d38e33b6c

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Faculty of Geoinformation Science and Earth Observation, Universiteit Twente, Enschede, Overijssel, Netherlands
ABSTRACT: The Ms 8.0 May 12, 2008 Wenchuan earthquake triggered tens of thousands of landslides. The widespread landslides have caused serious casualties and property losses, and posed a great threat to post-earthquake reconstruction. A spatial database, inventoried 43,842 landslides with a total area of 632 km2, was developed by interpretation of multi-resolution remote sensing images. The landslides can be classified into three categories: swallow, disrupted slides and falls; deep-seated slides and falls, and rock avalanches. The correlation between landslides distribution and the influencing parameters including distance from co-seismic fault, lithology, slope gradient, elevation, peak ground acceleration (PGA) and distance from drainage were analyzed. The distance from co-seismic fault was the most significant parameter followed by slope gradient and PGA was the least significant one. A logistic regression model combined with bivariate statistical analysis (BSA) was adopted for landslide susceptibility mapping. The study area was classified into five categories of landslide susceptibility: very low, low, medium, high and very high. 92.0% of the study area belongs to low and very low categories with corresponding 9.0% of the total inventoried landslides. Medium susceptible zones make up 4.2% of the area with 17.7% of the total landslides. The rest of the area was classified into high and very high categories, which makes up 3.9% of the area with corresponding 73.3% of the total landslides. Although the susceptibility map can reveal the likelihood of future landslides and debris flows, and it is helpful for the rebuilding process and future zoning issues. © 2013 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Inventory; Landslide; Logistic regression; Susceptibility mapping; Wenchuan Earthquake
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Akgun, Aykut, A comparison of landslide susceptibility maps produced by logistic regression, multi-criteria decision, and likelihood ratio methods: A case study at İzmir, Turkey, Landslides, 9, 1, pp. 93-106, (2012); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Chen, Zhaohua, Landslide hazard mapping using logistic regression model in Mackenzie Valley, Canada, Natural Hazards, 42, 1, pp. 75-89, (2007); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Das, Iswar Chandra, Landslide susceptibility assessment using logistic regression and its comparison with a rock mass classification system, along a road section in the northern Himalayas (India), Geomorphology, 114, 4, pp. 627-637, (2010); 
Das, Iswar Chandra, Landslide susceptibility mapping along road corridors in the Indian Himalayas using Bayesian logistic regression models, Geomorphology, 179, pp. 116-125, (2012); 
Dong, J. J., Logistic regression model for predicting the failure probability of a landslide dam, Engineering Geology, 117, 1-2, pp. 52-61, (2011); 
Douglas, John, Earthquake ground motion estimation using strong-motion records: A review of equations for the estimation of peak ground acceleration and response spectral ordinates, Earth-Science Reviews, 61, 1-2, pp. 43-104, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, X., Ma, H.
AUTHOR FULL NAMES: Li, Xiaoxuan (55932111200); Ma, Haijian (35262530900)
55932111200; 35262530900
Risk assessment of earthquake-induced collapses and slides based on logistic model for the case of Wenchuan county
(2013) Earthquake, 33 (2), pp. 63 - 70, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887848515&partnerID=40&md5=08fad2bbff6a1a46de1e3cad9a2a6d6e

AFFILIATIONS: National Earthquake Infrastructure Service, Beijing, China
ABSTRACT: Earthquake-induced collapses and slides are one of the geological disasters that can seriously endanger human life after earthquakes. In this article we select as study area the heavily devastated area Wenchuan county in the 2008 Wenchuan earthquake. Risk assessment of earthquake-induced collapses and slides is based on remote sensing data and GIS method, combined with the geological environment background of the study area. Logistic regression model was selected and the study area is ultimately categorized into five classes, namely, not dangerous, slightly dangerous, dangerous, more dangerous, extremely dangerous.
AUTHOR KEYWORDS: Earthquake-induced collapse and slide; Logistical model; Risk assessment; The 2008 Wenchuan earthquake
INDEX KEYWORDS: earthquake damage; earthquake mechanism; GIS; landslide; remote sensing; risk assessment; satellite data; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: undefined, (2008); 
undefined, (2008); 
undefined, (2004); 
undefined, (2004); 
undefined, (2007); 
undefined, (2009); 
undefined, (2009); 
HONG, Yang, Predicting global landslide spatiotemporal distribution: Integrating landslide susceptibility zoning techniques and real-time satellite rainfall estimates, International Journal of Sediment Research, 23, 3, pp. 249-257, (2008); 
undefined, (2003); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, W., Wang, X., Sun, G.-Q., Ding, X., Yuan, X., Guo, J.-X.
AUTHOR FULL NAMES: Zhang, Wei (56402138400); Wang, Xiaoqing (35148757500); Sun, Guoqing (7402760338); Ding, Xiang (16635732900); Yuan, Xiaoxiang (53165258800); Guo, Jianxing (55932019900)
56402138400; 35148757500; 7402760338; 16635732900; 53165258800; 55932019900
An improved change detection algorithm for building damage extraction based on high resolution RS images
(2013) Earthquake, 33 (2), pp. 87 - 95, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887837891&partnerID=40&md5=90bddb41891217ce01762c5eee79b1ab

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Department of Geography, University of Maryland, College Park, College Park, MD, United States
ABSTRACT: In this paper, an improved method based on digital change detection of multi-temporal high resolution R8 images is proposed to extract the building damage caused by catastrophic earthquakes, which aims to improve the accuracy of classification and to reduce the impact of the deformation of corresponding image point caused by low registration precision! different photographic mode, and the differences of surface elevation and height of buildings by searching the maximum image correlation coefficient of a point on post-event image from a certain spatial domain around the registration point on the pre-event image instead of the conventional correlation coefficient exactly on the registration point. The improved method is applied to detect the changes of buildings in a test area of the city of Dujiangyan after the 2008 Wenchuan earthquake by using pre-earthquake QuickBird remote sensing data acquired on July 22, 2005 and post-earthquake aerial images acquired on May 18, 2008. The results of the experiments are compared with the results using traditional method and indicate that the improved method is more precise and stable to extract the seismic damage information than traditional method.
AUTHOR KEYWORDS: Change detection; Correlation coefficient; Regional searching optimization method; Seismic damage extraction of buildings
INDEX KEYWORDS: building; correlation; earthquake damage; image resolution; optimization; QuickBird; remote sensing; seismic design; Sichuan earthquake 2008; China; Dujiangyan; Sichuan
REFERENCES: Singh, Ashbindu, Review Articlel: Digital change detection techniques using remotely-sensed data, International Journal of Remote Sensing, 10, 6, pp. 989-1003, (1989); 
undefined, (2005); 
undefined, (2003); 
undefined, (2005); 
Chen, Zhiqiang, Structural damage detection using bi-temporal optical satellite images, International Journal of Remote Sensing, 32, 17, pp. 4973-4997, (2011); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
undefined, (2011); 
Jensen, John Robert, Introductory digital image processing: a remote sensing perspective. Second edition, (1996); 
undefined, (2011); 
Lee, Craig A., Recent Developments in High Performance Computing for Remote Sensing: A Review, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 4, 3, pp. 508-527, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ma, H., Lu, N., Li, X.
AUTHOR FULL NAMES: Ma, Haijian (35262530900); Lu, Nan (57216383337); Li, Xiaoxuan (55932111200)
35262530900; 57216383337; 55932111200
Sidelines from remote sensing images
(2013) Earthquake, 33 (2), pp. 71 - 78, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887836686&partnerID=40&md5=d9c7c08b89604ec72528c710af39ca97

AFFILIATIONS: National Earthquake Infrastructure Service, Beijing, China; Institute of Remote Sensing and GIS, Peking University, Beijing, China
ABSTRACT: Roads are the traffic lifeline for emergency rescue and disaster relief. After huge earthquakes, it is very important to rapidly extract road damages from remote sensing images for disaster emergency rescue. However, because damages caused by earthquakes is different at different places, it is very complicated to extract in a common way. Usually, spectral features are used to discriminate damaged and undamaged pixels or objects in images. Because thresholds have to be chosen by manual operation dependent on different situations, methods based on spectral features are low in accuracy and efficiency. This paper proposes an approach to rapidly extract road damages by earthquake based on sidelines. The approach extracts double sidelines of undamaged road from images acquired after earthquakes, and then compare them with vector road lines before earthquakes. The damaged segments of roads can be extracted through comparison. The performance of the method is evaluated by an experiment with QuickBird images in the disaster area of the 2008 Wenchuan earthquake.
AUTHOR KEYWORDS: Eoad Damage; Extraction; Remote Sensing; Sidelines
INDEX KEYWORDS: accuracy assessment; disaster relief; efficiency measurement; QuickBird; remote sensing; satellite imagery; seismic hazard; Sichuan earthquake 2008; China; Sichuan; Wenchuan
REFERENCES: undefined, (2008); 
undefined, (2009); 
Chini, Marco, Exploiting SAR and VHR optical images to quantify damage caused by the 2003 bam earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 145-152, (2009); 
undefined, (2002); 
Gong, Jianya, Object-level change detection based on full-scale image segmentation and its application to Wenchuan Earthquake, Science in China, Series E: Technological Sciences, 51, SUPPL. 2, pp. 110-122, (2008); 
Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
undefined, (2004); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
undefined, (2007); 
undefined, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, L., Tian, B., Masoud, A., Koike, K.
AUTHOR FULL NAMES: Wang, Ling (36816548400); Tian, Bingwei (24376970400); Masoud, Alaa Ahmed (7005151081); Koike, Katsuaki (57219664247)
36816548400; 24376970400; 7005151081; 57219664247
Relationship between remotely sensed vegetation change and fracture zones induced by the 2008 Wenchuan earthquake, China
(2013) Journal of Earth Science, 24 (2), pp. 282 - 296, Cited 14 times.
DOI: 10.1007/s12583-013-0329-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876168236&doi=10.1007%2Fs12583-013-0329-y&partnerID=40&md5=eca4eaedf3123f242262b07ae39bf674

AFFILIATIONS: Graduate School of Science and Technology, Kumamoto University, Kumamoto, Kumamoto, Japan; Chengdu Institute of Biology Chinese Academy of Sciences, Chengdu, Sichuan, China; Department of Urban Management, Kyoto University, Kyoto, Kyoto, Japan; Department of Geology, Faculty of Science, Tanta, Gharbia, Egypt
ABSTRACT: The Wenchuan (Chines Source) earthquake triggered cascading disasters of landslides and debris flows that caused severe vegetation damage. Fracture zones can affect geodynamics and spatial pattern of vegetation damage. A segment tracing algorithm method was applied for identifying the regional fracture system through lineament extractions from a shaded digital elevation model with 25 m mesh for southern Wenchuan. Remote sensing and geographic information system techniques were used to analyze the spatiotemporal vegetation pattern. The relationship between vegetation type identified from satellite images and lineament density was used to characterize the distribution patterns of each vegetation type according to fracture zones. Broad-leaved forest, mixed forest, and farmland persist in areas with moderate lineament density. Deciduous broad-leaved and coniferous forest persists in less fractured areas. Shrub and meadow seem to be relatively evenly distributed across all lineament densities. Meadow, farmland, and shrub persist in the fractured areas. Changes of spatial structure and correlation between vegetation patterns before and after the earthquake were examined using semivariogram analysis of normalized difference vegetation indices derived from Landsat enhanced thematic mapper images. The sill values of the semivariograms show that the spatial heterogeneity of vegetation covers increased after the earthquake. Moreover, the anisotropic behaviors of the semivariograms coincide with the vegetation changes due to the strikes of fracture zones. © 2013 China University of Geosciences and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: fracture zone; geostatistics; lineament; remote sensing; vegetation pattern
INDEX KEYWORDS: algorithm; digital elevation model; fracture zone; geodynamics; geostatistics; GIS; Landsat thematic mapper; lineament; NDVI; remote sensing; satellite imagery; Sichuan earthquake 2008; spatiotemporal analysis; vegetation cover; vegetation dynamics; vegetation type; China; Sichuan; Wenchuan
REFERENCES: Brown, Daniel G., Predicting vegetation types at treeline using topography and biophysical disturbance variables, Journal of Vegetation Science, 5, 5, pp. 641-656, (1994); 
Spatial Database of 1 500 000 Digital Geological Map of the People S Republic of China, (1996); 
Clark, Christopher D., Spatial analysis of lineaments, Computers and Geosciences, 20, 7-8, pp. 1237-1258, (1994); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Structural Geology of Rocks and Regions, (1984); 
Fan, Jianrong, Rapid assessment of secondary disasters induced by the wenchuan earthquake, Computing in Science and Engineering, 12, 1, pp. 10-19, (2010); 
Gabr, Safwat S., Detecting areas of high-potential gold mineralization using ASTER data, Ore Geology Reviews, 38, 1-2, pp. 59-69, (2010); 
Garrigues, Sébastien, Quantifying spatial heterogeneity at the landscape scale using variogram models, Remote Sensing of Environment, 103, 1, pp. 81-96, (2006); 
Climatic and Environmental Research, (2000); 
Hara, Masatoshi, Vegetation structure in relation to micro-landform in an evergreen broad-leaved forest on Amami Ohshima Island, south-west Japan, Ecological Research, 11, 3, pp. 325-337, (1996)
PUBLISHER: China University of Geosciences
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, Y., Shan, X.-J., Qu, C., Song, X.-G., Zhang, G.-F.
AUTHOR FULL NAMES: Liu, Yunhua (26322999900); Shan, Xianjian (7101712284); Qu, Chunyan (8204955900); Song, Xiaogang (23006898300); Zhang, Guifang (55819500900)
26322999900; 7101712284; 8204955900; 23006898300; 55819500900
Application of sub-pixel image correlation to near field ground deformation measurements of Wenchuan earthquake
(2013) Dizhen Dizhi, 35 (1), pp. 138 - 150, Cited 3 times.
DOI: 10.3969/j.issn.0253-4967.2013.01.012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877842754&doi=10.3969%2Fj.issn.0253-4967.2013.01.012&partnerID=40&md5=5e9cb35b32fafd0a3791be7b86ab10ba

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The distribution and characteristic of ground deformation is a key issue in geodesy, which brings insight into the geometry of the ruptured fault and seismic hazard assessment in the future in the surrounding areas. It also provides better constraint conditions for geophysical inversion. Compared with field research, satellite imagery regularly provides detailed and spatially comprehensive images and is a most valuable alternative especially for the study in remote areas. So, observing seismic rupture is urgent after earthquake. InSAR is useful for measuring ground displacement, but the technique has severe limitations that are mainly due to data decorrelation and signal saturation, and it does not generally provide measurements in the near-fault area where large displacements occur. In this paper, the sub-pixel correlation method and SPOT image are used to map the Wenchuan earthquake rupture and to identify the faults activated by the earthquake. A computation is introduced of the inverse projection matrices for which a rigorous resampling is proposed. Image registration and correlation is achieved with an iterative unbiased processor that estimates the phase plane in the Fourier domain for subpixel shift detection, then the earthquake deformation field is derived. The results indicate that the Wenchuan earthquake produced at least surface ruptures on two faults along the Longmenshan Fault, the main rupture named Beichuan-Yinxiu rupture zone (Longmenshan town-Gaochuan in this map) and the secondary rupture named Hanwang rupture zone. The former is characterized by dextral-slip thrusting with a horizontal displacement of 4~6 m in average and a dextral-slip displacement of 1~3 m near Gaochuan town. The latter is characterized by pure thrusting, with horizontal displacement 1~2 m in average. There is no obvious ground rupture along Wenchuan-Maoxian Fault. The research indicates that sub-pixel correlation using optical image can be a powerful complement to differential radar interferometry, which can measure ground displacement near the fault zone. The study also shows that earthquake displacement fields can be calculated by remote sensing technology. The surface rupture can be traced and the meizoseismal area can be located by this method. Compared with field research, satellite imagery regularly provides detailed and spatially comprehensive images and is a most valuable alternative especially for the study in remote areas.
AUTHOR KEYWORDS: Ground displacements; Optical image; Phase correlation; Sub-pixel; Wenchuan earthquake
INDEX KEYWORDS: Ground displacement; Optical image; Phase correlation; Sub pixels; Wenchuan Earthquake; Deformation; Faulting; Geodetic satellites; Geometrical optics; Image registration; Interferometry; Iterative methods; Research; Satellite imagery; Earthquakes; correlation; deformation; earthquake rupture; fault; field; geodesy; hazard assessment; radar interferometry; remote sensing; satellite imagery; seismic hazard; Sichuan earthquake 2008; SPOT; China; Longmen Mountains; Sichuan; Wenchuan
REFERENCES: Earthquake Crustal Deformation Observation Technology, (1995); 
Chinese Landscape Architecture, (2008); 
Li, Haibing, Co-seisimic surface rupture and dextral-slip oblique thrusting of the Ms 8. 0 wenchuan earthquake, Acta Geologica Sinica (English Edition), 82, 12, pp. 1623-1643, (2008); 
Li, Haibing, The surface rupture zone distribution of the Wenchuan earthquake (Ms8.0) happened on May 12th, 2008, Geology in China, 35, 5, pp. 803-813, (2008); 
Qu, Chunyan, Spatial analysis of coseismic displacement field of the wenchuan M s 8.0 earthquake derived using D-insar, Dizhen Dizhi, 32, 2, pp. 175-190, (2010); 
Journal of Geodesy and Geodynamics, (2008); 
Shan, Xianjian, Coseismic surface deformation caused by the Wenchuan Ms8. 0 earthquake from InSAR data analysis, Acta Geophysica Sinica, 52, 2, pp. 496-504, (2009); 
Sun, Jianbao, InSAR deformation observation and preliminary analysis of the MS8 Wenchuan earthquake, Dizhen Dizhi, 30, 3, pp. 789-795, (2008); 
Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
Remote Sensing Image Information System, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, X., Wei, Y., Li, J., Zhang, H., Ma, Q., Kang, L.
AUTHOR FULL NAMES: Jin, Xing (36681350800); Wei, Yongxiang (23978816600); Li, Jun (37055859000); Zhang, Hongcai (55438249600); Ma, Qiang (57193777284); Kang, Lanchi (16068641300)
36681350800; 23978816600; 37055859000; 55438249600; 57193777284; 16068641300
Progress of the earthquake early warning system in Fujian, China
(2013) Earthquake Science, 26 (1), pp. 3 - 14, Cited 6 times.
DOI: 10.1007/s11589-013-0030-3
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895906978&doi=10.1007%2Fs11589-013-0030-3&partnerID=40&md5=ac7e5f50701525e8e10fcf12fbaedf73

AFFILIATIONS: Earthquake Administration of Fujian Province, Fuzhou, Fujian, China; Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China
ABSTRACT: In this article, we systematically introduce the latest progress of the earthquake early warning (EEW) system in Fujian, China. We focus on the following key technologies and methods: continuous earthquake location and its error evaluation; magnitude estimation; reliability judgment of EEW system information; use of double-parameter principle in EEW system information release threshold; real-time estimation of seismic intensity and available time for target areas; seismic-monitoring network and data sharing platform; EEW system information release and receiving platform; software test platform; and test results statistical analysis. Based on strong ground motion data received in the mainshock of the Wenchuan earthquake, the EEW system developed by the above algorithm is simulated online, and the results show that the system can reduce earthquake hazards effectively. In addition, we analyzed four earthquake cases with magnitude greater than 5.5 processed by our EEW system since the online-testing that was started one year ago, and results indicate that our system can effectively reduce earthquake hazards and have high practical significance. © 2013 The Seismological Society of China, Institute of Geophysics, China Earthquake Administration and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Continuously earthquake location; Double-parameter principle; Earthquake early warning; Magnitude estimation
REFERENCES: Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
J Geophys Res, (2007); 
Allen, Richard M., Real-time earthquake detection and hazard assessment by ElarmS across California, Geophysical Research Letters, 36, 5, (2009); 
Allen, Richard M., The status of earthquake early warning around the World: An introductory overview, Seismological Research Letters, 80, 5, pp. 682-693, (2009); 
International Symposium on Strong Vrancea Earthquakes and Risk Mitigation, (2007); 
San Francisco Daily Evening Bulletin, (1868); 
Erdik, Mustafa O., Istanbul earthquake rapid response and the early warning system, Bulletin of Earthquake Engineering, 1, 1, pp. 157-163, (2003); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Espinosa-Aranda, J. Manuel, Evolution of the mexican seismic alert system (SASMEX), Seismological Research Letters, 80, 5, pp. 694-706, (2009); 
Wurman, Gilead, Toward earthquake early warning in northern California, Journal of Geophysical Research: Solid Earth, 112, 8, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Jin, X., Zhang, H., Li, J., Wei, Y., Ma, Q.
AUTHOR FULL NAMES: Jin, Xing (36681350800); Zhang, Hongcai (55438249600); Li, Jun (37055859000); Wei, Yongxiang (23978816600); Ma, Qiang (57193777284)
36681350800; 55438249600; 37055859000; 23978816600; 57193777284
Earthquake magnitude estimation using the τc and P d method for earthquake early warning systems
(2013) Earthquake Science, 26 (1), pp. 23 - 31, Cited 12 times.
DOI: 10.1007/s11589-013-0005-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895905136&doi=10.1007%2Fs11589-013-0005-4&partnerID=40&md5=09af0b458da3d2bd9918fd7b4a328200

AFFILIATIONS: Fujian Earthquake Agency, Fuzhou, Fujian, China; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: Earthquake early warning (EEW) systems are one of the most effective ways to reduce earthquake disaster. Earthquake magnitude estimation is one of the most important and also the most difficult parts of the entire EEW system. In this paper, based on 142 earthquake events and 253 seismic records that were recorded by the KiK-net in Japan, and aftershocks of the large Wenchuan earthquake in Sichuan, we obtained earthquake magnitude estimation relationships using the τ<inf>c</inf> and P<inf>d</inf> methods. The standard variances of magnitude calculation of these two formulas are ±0.65 and ±0.56, respectively. The P<inf>d</inf> value can also be used to estimate the peak ground motion of velocity, then warning information can be released to the public rapidly, according to the estimation results. In order to insure the stability and reliability of magnitude estimation results, we propose a compatibility test according to the natures of these two parameters. The reliability of the early warning information is significantly improved though this test. © 2013 The Seismological Society of China and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: τc method; Earthquake early warning; Earthquake magnitude; Pd method
REFERENCES: Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
J Geophys Res, (2007); 
Erdik, Mustafa O., Istanbul earthquake rapid response and the early warning system, Bulletin of Earthquake Engineering, 1, 1, pp. 157-163, (2003); 
Hsiao, Naichi, Development of earthquake early warning system in Taiwan, Geophysical Research Letters, 36, 5, (2009); 
Iglesias, A., The seismic alert system for Mexico City: An evaluation of its performance and a strategy for its improvement, Bulletin of the Seismological Society of America, 97, 5, pp. 1718-1729, (2007); 
Comparison of four numerical methods for calculating seismic response of SDOF system, 23, 1, pp. 18-30; 
Kamigaichi, Osamu, Earthquake early warning in Japan: Warning the general public and future prospects, Seismological Research Letters, 80, 5, pp. 717-726, (2009); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Kanamori, Hiroo M., Real-time seismology and earthquake hazard mitigation, Nature, 390, 6659, pp. 461-464, (1997); 
Lancieri, María, A Bayesian approach to the real-time estimation of magnitude from the early P and S wave displacement peaks, Journal of Geophysical Research: Solid Earth, 113, 12, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Zhou, Y.-M., Xu, J.-L., Yang, H.-Z.
AUTHOR FULL NAMES: Zhou, Yuming (42962803700); Xu, Jinliang (36244977400); Yang, Hongzhi (8971398100)
42962803700; 36244977400; 8971398100
Study on the relationship between earthquake-induced geologic hazards and basic factors of environment in road corridor
(2013) Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology, 35 (2), pp. 113 - 117, Cited 0 times.
DOI: 10.3963/j.issn.1671-4431.2013.02.022
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875478764&doi=10.3963%2Fj.issn.1671-4431.2013.02.022&partnerID=40&md5=1b9ea927327f4b8038660ecfcf342c90

AFFILIATIONS: Chang'an University, Xi'an, Shaanxi, China
ABSTRACT: The relationship between the route corridor earthquake-induced hazards and basic environmental factors was studied.The connection of seven basic environmental including factors fault zone distance, geological strata, surface slope, aspect, surface roughness, vegetation type and road engineering influence with geological hazards were analyzed based on the ArcGIS platform, through the way of combining data collection from sections of national roads G 213 and G 317 in the hardest-hit regions of 5·12 Wenchuan Earthquake, field investigation and theory analysis. The results show that with the distance being farer, disasters are getting less.The older the geological strata is, the more likely disasters are, and disasters happened less in rocky surface than soil surface. With the index of 1.2~2, more disasters occurred; the surfaces of 30°to 60° slope have the majorities geological hazard; shady slopes have a high distribution density of disasters than sunny slope. Broad-leaved forest is the kind of vegetation type which holds the largest density of disasters.In the range of 0.5 km away from road route, the region has the vast majority of geological disaster.
AUTHOR KEYWORDS: Earthquake; Environmental factor; Geological hazard; GIS; Road engineering; Route corridor
REFERENCES: undefined, (2010); 
Gupta, Pankaj V., Slope stability of Tehri Dam reservoir area, India, using landslide hazard zonation (LHZ) mapping, Quarterly Journal of Engineering Geology, 30, 1, pp. 27-36, (1997); 
Pachauri, Ashok K., Landslide zoning in a part of the Garhwal Himalayas, Environmental Geology, 36, 3-4, pp. 325-334, (1998); 
GIS Approach to Seismic Slope Stability, (2004); 
undefined, (2008); 
undefined, (2009); 
undefined, (2012); 
undefined, (2009); 
undefined, (2009); 
undefined, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jing, F., Shen, X., Kang, C.L., Xiong, P.
AUTHOR FULL NAMES: Jing, Feng (59027907000); Shen, Xuhui (7402721678); Kang, Chunli (35234219900); Xiong, Pan (55550548000)
59027907000; 7402721678; 35234219900; 55550548000
Variations of multi-parameter observations in atmosphere related to earthquake
(2013) Natural Hazards and Earth System Sciences, 13 (1), pp. 27 - 33, Cited 83 times.
DOI: 10.5194/nhess-13-27-2013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872101883&doi=10.5194%2Fnhess-13-27-2013&partnerID=40&md5=3b0989eef861d41bd319a505258e3d07

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; China Earthquake Networks Center, Beijing, China
ABSTRACT: Anomalies of multi-parameters (outgoing longwave radiation, surface latent heat flux, air temperature, relative humidity, and air pressure) before the 12 May 2008 Wenchuan M<inf>s</inf>=8.0 earthquake were discussed in order to obtain the seismic precursors. Multi-parameter data were computed based on multi-year background data. The results indicated that these parameters had significant variations prior to this event. The anomaly of outgoing longwave radiation was observed firstly, which gives an early warning. Next were air temperature, relative humidity, and air pressure, which had quasi-simultaneous variations in the basin and the mountain region close to the epicenter. The last was surface latent heat flux, which happened the day before this event. The characteristics of the parameter variations for this event are similar to other earthquakes, which is demonstrated in some other publications. The variations can be attributed to solid earth degassing and chemical reactions in the atmosphere. Additionally, the emission of gases from solid earth into the atmosphere could be ascribed to the tectonic stress of the Wenchuan earthquake. © Author(s) 2013. CC Attribution 3.0 License.
INDEX KEYWORDS: air temperature; atmospheric pressure; early warning system; earthquake precursor; latent heat flux; longwave radiation; relative humidity; Sichuan earthquake 2008
REFERENCES: Cervone, Guido, Wavelet maxima curves of surface latent heat flux anomalies associated with Indian earthquakes, Natural Hazards and Earth System Sciences, 5, 1, pp. 87-99, (2005); 
Cervone, Guido, An early warning system for coastal earthquakes, Advances in Space Research, 37, 4, pp. 636-642, (2006); 
Cervone, Guido, Surface latent heat flux and nighttime LF anomalies prior to the Mw=8.3 Tokachi-Oki earthquake, Natural Hazards and Earth System Sciences, 6, 1, pp. 109-114, (2006); 
Sichuan Earthquake, (1997); 
Dey, Sagnik, Surface latent heat flux as an earthquake precursor, Natural Hazards and Earth System Sciences, 3, 6, pp. 749-755, (2003); 
Geochemistry Research Advances, (2008); 
Dunajecka, M. A., Atmospheric and thermal anomalies observed around the time of strong earthquakes in México, Atmosfera, 18, 4, pp. 235-247, (2005); 
Study on Seismic Anomalous Features in Outgoing Longwave Radiation Based on Background Fields Analysis, (2010); 
Jing, Feng, Anomalies of outgoing longwave radiation before some medium to large earthquakes, Earthquake, 29, 4, pp. 117-122, (2009); 
Jing, Feng, Extracting seismic anomalies based on STD threshold method using Outgoing Longwave Radiation data, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1561-1564, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Qi, W., Su, G.
AUTHOR FULL NAMES: Qi, Wenhua (54791464400); Su, Guiwu (8727145100)
54791464400; 8727145100
High-resolution remote sensing-based method for determining the changes of loss risk from Earthquake-induced Geohazard-chain
(2013), pp. 183 - 186, Cited 1 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907385859&partnerID=40&md5=b4b9330b97d8f5d69500a9e0e39a3e0e

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Taking the year 1979, 2008 and 2010 as the representative reference periods, the vulnerabilities and loss risks of hazard-affected bodies from Wenchuan Earthquake-induced geohazard-chain and its temporal-spatial changes in Qingping country have been analyzed mainly through GIS, high-resolution remote sensing-based method and scenario analytical method. The main achievements are concluded as follows: From 1979 to 2010, the building area increased 2.4 times, the road mileage grew more than 2 times but the farmland area reduced by 40.7%. Under the scenario of Wenchuan Earthquake-induced geohazard-chain, in the last thirty years, the damaged building area increased 2.7 times, the mileage of destroyed road grew 1.9 times but the ruined farmland decreased by 62.6%. The economic losses of the three kinds of hazard-affected bodies in 2010 were 4.41 times more than that in 1979. Urbanization, population growth and economic development are the main driving forces of the temporal-spatial changes of the risk from earthquake-induced geohazard-chain in Qingping country. © 2013. The authors.
AUTHOR KEYWORDS: Earthquake-induced geohazard-chain; High-resolution remote sensing; Risk; The Qingping Country
INDEX KEYWORDS: Chains; Farms; Hazards; Losses; Population statistics; Remote sensing; Risk perception; Risks; Roads and streets; Analytical method; Building areas; Earthquake-induced geohazard-chain; Economic development; High resolution; High resolution remote sensing; Population growth; The Qingping Country; Earthquakes
REFERENCES: Sun, Ping, Analysis on the dynamical process of Donghekou rockslide-debris flow triggered by 5.12 Wenchuan earthquake, Journal of Mountain Science, 8, 2, pp. 140-148, (2011); 
Journal of Mountain Science, (2009); 
Hydrogeology Engineering Geology, (2011); 
Earthquake Research in China, (2012); 
Qi, Wenhua, Study on the changes of vulnerability and loss risk of buildings from seismic disaster in the process of urbanization - A case study of Tangshan area, Dizhen Dizhi, 34, 4, pp. 820-834, (2012)
PUBLISHER: Atlantis Press contact@atlantis-press.com
SPONSORS: Atlantis Press, Fuzhou University, College of Environment and Resources, Hebei United University, Henan Normal University, College of Environment, Jiangsu Computer Society
CONFERENCE NAME: 2013 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2013
CONFERENCE DATE: 2013-07-26 through 2013-07-28
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, J., Chen, Q., Deng, S.
AUTHOR FULL NAMES: Wang, Jingbo (56181504200); Chen, Qi (56900142500); Deng, Shuaishuai (56181394300)
56181504200; 56900142500; 56181394300
Analysis of transmission line's scattering characteristics in high resolution radar satelite image
(2013) Communications in Computer and Information Science, 398 PART I, pp. 403 - 417, Cited 3 times.
DOI: 10.1007/978-3-642-45025-9_40
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901508322&doi=10.1007%2F978-3-642-45025-9_40&partnerID=40&md5=6dc46e6127f5e41491a871c2e33833e1

AFFILIATIONS: International School of Software, Wuhan University, Wuhan, Hubei, China
ABSTRACT: Since the reform and opening up policy,the development of China's economy has been accelerating. People's demand as well as the size of the national grid is growing and expanding.Our nation makes vigorous effort in building UHV, EHV transmission lines to meet the demand. 1000kV southeastern Shanxi - Nanyang - Jingmen UHV AC pilot demonstration project was put into operation in 2009, which brings significance to the adjustment of the layout construction and optimal allocation of China's recourses. However, in recent years, the occurrence of extreme weather and geological disasters leads to great damage to people, which is increasing and becoming more and more fierce. At the beginning of 2008, snow disaster occurred in large scale of central and southern part of China, as well as Wenchuan earthquake in May 2008, the 2010 earthquake in Yushu in Qinghai Province, Ya'an, Sichuan earthquake in 2013, during which time the overturning of the transmission line tower caused abnormal run of the grid of those affected areas for a long time, which caused huge losses of national economy and people's lives. Synthetic Aperture Radar (SAR) can handle remote sensing observations through microwave, with features of all-day, round-the-clock work, high resolution, strong penetration and rich characteristic signal, etc. The region has its unique advantages in a wide range of natural disasters. Real-time and on-time feature drawings provided can be reduce the losses caused by disasters when used in emergency command and rescue work. In this paper, research on 3m resolution TerraSAR images UHV transmission line scattering characteristics focuses on the discipline of bright spots offset by scattered wires. The study shows that the high-resolution SAR images, transmission towers and power lines can be used as a basis for target recognition for it's high scattering intensity. In 3m image resolution, when the angle between the direction of flight is greater than 0°, the overall transmission line bright spot shift tower to the south; when less than 0°, the overall to the north. By processing the data, we found that the change of the angle formed by bright spots---caused by scattered power lines is facing an offset, while the overall offset is affected by other factors, which needs further research and analysis. © Springer-Verlag Berlin Heidelberg 2013.
AUTHOR KEYWORDS: High-resolution; Lline; Offset; Scattering characteristics; TerraSAR; Transmission; Transmission tower; UHV
INDEX KEYWORDS: Data handling; Disasters; Earthquakes; Ecosystems; Electric lines; Image resolution; Natural resources management; Resource allocation; Scattering; Transmission line theory; Transmissions; High resolution; Lline; Offset; Scattering char-acteristics; TerraSAR; Transmission tower; UHV; Synthetic aperture radar
REFERENCES: Binaghi, Elisabetta, Neural classification of high resolution remote sensing imagery for power transmission lines surveillance, International Geoscience and Remote Sensing Symposium (IGARSS), 1, pp. 500-502, (2002); 
Earp, Graham K., Condition based risk assessment of electricity towers using high resolution images from a helicopter, IEE Conference Publication, 3, 2005-11034, pp. 91-95, (2005); 
Frost, Phillip E., Providing satellite-based early warnings of fires to reduce fire flashovers on South Africa's transmission lines, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2443-2446, (2007); 
Jardini, Maurício George Miguel, Use of geo-referenced images for the surveillance of transmission lines right-of-way, pp. 711-716, (2004); 
Liao, Jingjuan, Monitoring for 2003 Huai River flood in China using multisource SAR data, International Geoscience and Remote Sensing Symposium (IGARSS), 4, pp. 2260-2263, (2004); 
Liu, Yan, Power transmission tower monitoring technology based on TerraSAR-X products, Proceedings of SPIE - The International Society for Optical Engineering, 8286, (2011); 
Eineder, Michael, Imaging geodesy - Toward centimeter-level ranging accuracy with TerraSAR-X, IEEE Transactions on Geoscience and Remote Sensing, 49, 2, pp. 661-671, (2011); 
Lincoln Laboratory Journal, (1993); 
Sarabandi, Kamal, Extraction of power line maps from millimeter-wave polarimetric SAR images, IEEE Transactions on Antennas and Propagation, 48, 12, pp. 1802-1809, (2000); 
Sarabandi, Kamal, Power Lines: Radar Measurements and Detection Algorithm for Polarimetric SAR Images, IEEE Transactions on Aerospace and Electronic Systems, 30, 2, pp. 632-643, (1994)
PUBLISHER: Springer Verlag service@springer.de
SPONSORS: Chinese Academy of Sciences, Eastern Michigan University, The Hong Kong Polytechnic University, Wuhan University
CONFERENCE NAME: 2013 International Conference on Geo-Informatics in Resource Management and Sustainable Ecosystem, GRMSE 2013
CONFERENCE DATE: 2013-11-08 through 2013-11-10
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhang, Y., Dong, S., Hou, C., Shi, J.S., Wu, Z., Li, H., Sun, P., Liu, G., Li, J.
AUTHOR FULL NAMES: Zhang, Yueqiao (56507570200); Dong, Shuwen (7402017108); Hou, Chuntang (56114689700); Shi, Jusong (7404495701); Wu, Zhonghai (55500643100); Li, Hailong (56115318700); Sun, Ping (26428429500); Liu, Gang (55706600300); Li, Jian (56115520800)
56507570200; 7402017108; 56114689700; 7404495701; 55500643100; 56115318700; 26428429500; 55706600300; 56115520800
Seismogenic structure of the April 20,2013, Lushan Ms7 earthquake in Sichuan
(2013) Acta Geologica Sinica (English Edition), 87 (3), pp. 633 - 645, Cited 33 times.
DOI: 10.1111/1755-6724.12075
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898608301&doi=10.1111%2F1755-6724.12075&partnerID=40&md5=2d3d9a8ceaa25b2b5ba2ad4c6520c345

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: At 08:02 on April 20, 2013, a Ms7.0 earthquake occurred in Lushan, Ya'an, in the Longmenshan fault zone, Sichuan. The epicenter was located between Taiping Town and Shuangshi Town, Lushan County and the maximum earthquake intensity at the epicenter reached class IX. Field investigations in the epicenter area found that, although buildings were seriously damaged, no obvious surface rupture structure was produced, only some ground fissures and sand blows and water ejection phenomena being seen. An integrated analysis of high-resolution remote sensing image interpretation, mainshock and aftershock distribution, and focal mechanism solutions indicated that this earthquake was an independent rupturing event in the southwestern segment of the Longmenshan fault zone, belonging to the thrust-type earthquake. Ruptures occurred along the south-central segment of the Shuangshi-Dachuan fault and the principal rupture plane dipped SW at 33-43°. It is inferred that the Lushan earthquake might be related to the ramp activity of the basal detachment zone (13-19 km) of the Longmenshan fault zone. Historically, there occurred at least two Ms6-6.5 earthquakes along the Shuangshi-Dachuan fault zone; thus it is thought that the Lushan earthquake, different from the Wenchuan earthquake, was a characteristic one in the southwestern segment of the Longmenshan fault zone. In-situ stress measurements indicated the Lushan earthquake was the result of stress release of the southwestern segment of the Longmenshan fault zone after the Wenchuan earthquake. This paper analyzes the tectonic setting of the seismogenic structure of this earthquake.
AUTHOR KEYWORDS: Ground fissure; Longmenshan fault zone; Lushan; Shuangshi-Dachuan fault; Sichuan; Thrust ramp
INDEX KEYWORDS: building; earthquake damage; earthquake epicenter; earthquake intensity; earthquake magnitude; earthquake rupture; fault plane; fault zone; fissure; Lushan earthquake 2013; seismic source; Sichuan earthquake 2008; tectonic setting; thrust fault; China; Longmenshan Fault Zone; Sichuan; Wenchuan
REFERENCES: Arne, Dennis C., Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan Plateau, Tectonophysics, 280, 3-4, pp. 239-256, (1997); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
She Fa Chen, Active faulting and block movement associated with large earthquakes in the Min Shan and Longmen Mountains, northeastern Tibetan Plateau, Journal of Geophysical Research, 99, B12, pp. 24-38, (1994); 
Seismology and Geology, (1994); 
Earth Science Frontiers, (2010); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Dong, Shaopeng, A preliminary research on the latest tectonic deformation style and the activity age of the Dayi fault in the piedmont of the longmen mountains, Dizhen Dizhi, 30, 4, pp. 996-1003, (2008); 
Acta Geologica Sinica, (2008); 
Chinese Journal of Engineering Geophysics, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Bai, S.B., Wang, J., Glade, T., Bell, R., Thiebes, B.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Wang, Jian (55491249300); Glade, Thomas W. (57192782350); Bell, Rainer (56307438000); Thiebes, Benni (55668276300)
15830966700; 55491249300; 57192782350; 56307438000; 55668276300
Rainfall threshold analysis and landslide susceptibility mapping in Wudu County
(2013), 2, pp. 659 - 664, Cited 1 times.
DOI: 10.1007/978-3-642-31445-2_86
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898067807&doi=10.1007%2F978-3-642-31445-2_86&partnerID=40&md5=908196e12eb638deb93c24927cbafb5d

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China; Department of Geography and Regional Research, Universität Wien, Vienna, Vienna, Austria
ABSTRACT: The main purpose of this study is the analysis of rainfall thresholds and landslide susceptibility mapping in order to assist the prediction, mitigation and management of slope instability in the Wudu county in China. Firstly, the rainfall thresholds were assessed using the Antecedent soil water status (ASWS) model based on landslides induced by multi-temporal rainfall events in the Wudu county. Secondly, three separate susceptibility maps were produced using historic landslide inventories, and inventories reflecting single landslide triggering events, i.e. the 2008 Wenchuan earthquake and heavy rain storms. The separate maps were combined to illustrate the maximum landslide probability of all three landslide susceptibility maps. The results show that rainfall thresholds could be applied to forecast rainfall-induced landslides, and the integrated landslide susceptibility map could be used for planning of spatial development as well as emergency response actions. © Springer-Verlag Berlin Heidelberg 2013.
AUTHOR KEYWORDS: China; GIS; Landslides; Rainfall thresholds; Susceptibility mapping
INDEX KEYWORDS: Earthquakes; Geographic information systems; Mapping; Rain; Soil moisture; 2008 wenchuan earthquakes; China; Landslide inventories; Landslide susceptibility; Landslide susceptibility mapping; Rainfall induced landslides; Rainfall thresholds; Susceptibility mapping; Landslides
REFERENCES: Aleotti, Pietro, A warning system for rainfall-induced shallow failures, Engineering Geology, 73, 3-4, pp. 247-265, (2004); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Ayalew, Lulseged, The effect of seasonal rainfall on landslides in the highlands of Ethiopia, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 9-19, (1999); 
Proceedings of the International Conference Mountain Risks, (2010); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Bai, Shibiao, GIS-Based and Data-Driven Bivariate Landslide-Susceptibility Mapping in the Three Gorges Area, China Project supported by the National Natural Science Foundation of China (Nos. 40801212 and 49971064), the Foundation for China Geological Survey (No. 200316000035), the Natural Science Foundation of Jiangsu Higher Education Institutions of China (No. 06KJB170063), Pedosphere, 19, 1, pp. 14-20, (2009); 
Bai, Shibiao, GIS-based rare events logistic regression for landslide-susceptibility mapping of Lianyungang, China, Environmental Earth Sciences, 62, 1, pp. 139-149, (2011); 
Eighth International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences, (2008); 
Bell, Rainer, Quantitative risk analysis for landslides - Examples from Bíldudalur, NW-Iceland, Natural Hazards and Earth System Sciences, 4, 1, pp. 117-131, (2004)
PUBLISHER: Springer Science and Business Media Deutschland GmbH
SPONSORS: International Flood Initiative (IFI), International Geographical Union (IGU), International Union of Geodesy and Geophysics (IUGG), International Union of Geological Sciences (IUGS)
CONFERENCE NAME: 2nd World Landslide Forum, WLF 2011
CONFERENCE DATE: 2011-10-03 through 2011-10-09
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Luo, Y., Wang, Y., He, Y., Wang, H.
AUTHOR FULL NAMES: Luo, Yonghong (55832604800); Wang, Yunsheng (7601489707); He, Yuan (55836560800); Wang, Hong (55961774700)
55832604800; 7601489707; 55836560800; 55961774700
Study on mountain slopes topographic effect induced by Wenchuan earthquake
(2013), pp. 73 - 79, Cited 4 times.
DOI: 10.1201/b15794-13
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890104530&doi=10.1201%2Fb15794-13&partnerID=40&md5=4bebdbc4f54e1cb37bd3d1d80e0dbdba

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; China Railway Eryuan Engineering Group Co. Ltd., Chengdu, Sichuan, China
ABSTRACT: Seismic ground motion topographic amplification effect in mountain areas has been observed and studied in many earthquakes. And the Wenchuan earthquake it occurred in Longmen mountain areas, which the topographic amplification lead to many rockfalls, landslides and so on. This paper presents the topographic amplification effect in different geomorphic units in Longmen mountain areas, and reports an unique seismic topographic directional effect of aftershocks monitoring in Weigan hill, Qingchuan county. Based on field investigation and interpretation of remote sensing, it could be concluded that the comparative study showed that the macro-geomorphic units played an important role in the types of seismic geo-hazards, such as in the middle and high mountain areas, the large and mediumsized rockfalls and landslides were development, but in the low mountain and hilly areas were main seismic crack and small rockfalls. The shapes of deep canyon topography had an obvious influence in density development of seismic geo-hazards, which the "V" shape canyon geo-hazards density were more than "U" shape canyon. More important is that the micro-topographical effect in the thin ridge, turning parts of the slope, convex parts of the slope were more serious damage than the other parts of the slope. Aftershocks monitoring at the top of Weigan hill showed that the horizontal components amplitude in northsouth direction was obvious amplification, and this direction is the short axis of the ridge. © 2013 Taylor & Francis Group, London.
INDEX KEYWORDS: Earthquake effects; Engineering geology; Landslides; Remote sensing; Rock bursts; Topography; Canyon topographies; Comparative studies; Directional effects; Seismic ground motions; Topographic amplification; Topographic effects; Topographical effects; Wenchuan Earthquake; Landforms
REFERENCES: Ashford, Scott A., Analysis of topographic amplification of inclined shear waves in a steep coastal bluff, Bulletin of the Seismological Society of America, 87, 3, pp. 692-700, (1997); 
Bulletin of the Seismological Society of America, (1987); 
Bulletin of the Seismological Society of America, (1979); 
Sánchez-Sesma, Francisco José, Diffraction of P, SV and Rayleigh waves by topographic features: a boundary integral formulation, Bulletin of the Seismological Society of America, 81, 6, pp. 2234-2253, (1991); 
Specifications for Seismic Design of Structrues, (2001); 
Research on the Development Regular and Triggering Mechanism of Geological Hazards in Longchi, (2010); 
Chinese Journal of Geotechnical Engineering, (1998); 
Geohazard Assessment of the Wenchuan Earthquake, (2009); 
Journal of Engineering Geology, (2008); 
Geological Bulletin of China, (2005)
PUBLISHER: Taylor and Francis - Balkema pub.nl@tandf.co.uk
SPONSORS: Geology and the Environment (IAEG), International Association for Engineering
CONFERENCE NAME: International Symposium and 9th Asian Regional Conference of IAEG "Global View of Engineering Geology and the Environment"
CONFERENCE DATE: 2013-09-24 through 2013-09-25
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Peng, C.Y., Yang, J.S., Xue, B., Chen, Y., Zhu, X.
AUTHOR FULL NAMES: Peng, Chaoyong (22958100200); Yang, Jiansi (14009005600); Xue, Bing (7102889443); Chen, Yang (55721087800); Zhu, Xiaoyi (55695559900)
22958100200; 14009005600; 7102889443; 55721087800; 55695559900
Research on correlation between early-warning parameters and magnitude for the Wenchuan Earthquake and its aftershocks
(2013) Acta Geophysica Sinica, 56 (10), pp. 3404 - 3415, Cited 28 times.
DOI: 10.6038/cjg20131016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887296496&doi=10.6038%2Fcjg20131016&partnerID=40&md5=359f0d613810594b22deae7044a1b4f7

AFFILIATIONS: Institute of Geophysics, China Earthquake Administration, Beijing, China; Institute of Earthquake Science, China Earthquake Administration, Beijing, China
ABSTRACT: As one of the effective ways to mitigate earthquake hazards, earthquake early warning (EEW) has been studied by many countries and regions in the world. They have achieved significant mitigation practical effectiveness during operations. We studied the correlation between the final event magnitude and four early-warning parameters obtained from the early portion of P and S phases for the Wenchuan mainshock and its aftershocks. The investigated parameters are the peak displacement (P<inf>d</inf>), the integral of the velocity squared (IV2), and the predominant and characteristic periods (τ<inf>p</inf> and τ<inf>c</inf>). The used dataset spans from 12 May 2008 to 4 October 2008 and includes 218 events with magnitude greater than or equal to 4, including the main event (M8.0), the largest aftershock of M6.5, and 7 events with magnitude greater than 6. P<inf>d</inf>, IV2 and τ<inf>c</inf> are well correlated with the final magnitude and no saturation effect is observed when magnitudes are less than or equal to 6.5, confirming previous results. However, when estimating the mainshock, these parameters have different degrees of underestimated phenomenon, especially IV2 parameter. In addition, there are slope changes in the P<inf>d</inf> and IV2 regression curves around M6, and P<inf>d</inf> result is quite different from the previous results. τ<inf>p</inf> result shows that this parameter is not suitable for the EEW system in the Wenchuan area.
AUTHOR KEYWORDS: Earthquake early warning; Earthquake magnitude; Integral of the velocity squared
INDEX KEYWORDS: Jurassic; Miocene; Early warning; Earthquake early warning; Earthquake hazard; Earthquake magnitudes; Integral of the velocity squared; Main event; Main shock; Peak displacement; S-phase; Wenchuan Earthquake; Earthquakes; correlation; displacement; earthquake magnitude; parameterization; research work; Sichuan earthquake 2008
REFERENCES: Chinese Journal of Geophysics, (2012); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Jin, Xing, Research on earthquake early warning magnitude estimate, Acta Seismologica Sinica, 34, 5, pp. 593-610, (2012); 
Progress in Geophysics, (2012); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Wu, Yih-Min Min, Rapid assessment of damage potential of earthquakes in Taiwan from the Beginning of P waves, Bulletin of the Seismological Society of America, 95, 3, pp. 1181-1185, (2005); 
Simons, Frederik J., Automatic detection and rapid determination of earthquake magnitude by wavelet multiscale analysis of the primary arrival, Earth and Planetary Science Letters, 250, 1-2, pp. 214-223, (2006); 
Wu, Yih-Min Min, Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning, Geophysical Research Letters, 33, 16, (2006); 
Zollo, Aldo, Earthquake magnitude estimation from peak amplitudes of very early seismic signals on strong motion records, Geophysical Research Letters, 33, 23, (2006); 
Zollo, Aldo, Reply to comment by P. Rydelek et al. on "Earthquake magnitude estimation from peak amplitudes of very early seismic signals on strong motion records, Geophysical Research Letters, 34, 20, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, J., Tang, B., Lu, T.
AUTHOR FULL NAMES: Xu, Jiceng (55823365700); Tang, Bin (55823768200); Lu, Tao (56406648100)
55823365700; 55823768200; 56406648100
Monitoring the riparian vegetation cover after the Wenchuan earthquake along the Minjiang River valley based on multi-temporal Landsat TM images: A case study of the Yingxiu-Wenchuan section
(2013) Shengtai Xuebao, 33 (16), pp. 4966 - 4974, Cited 12 times.
DOI: 10.5846/stxb201206300918
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881659409&doi=10.5846%2Fstxb201206300918&partnerID=40&md5=b936757a7af61b3be0e566e8388bc6a0

AFFILIATIONS: Chengdu Institute of Biology Chinese Academy of Sciences, Chengdu, Sichuan, China; College of Geosciences, Chengdu University of Technology, Chengdu, China
ABSTRACT: Disturbances, especially large and infrequent disturbances are usually understood as events that disrupt the equilibrium state of an ecosystem by producing abrupt changes in its structural and functional characteristics that may persist for decades to centuries. Earthquake, as a typical catastrophic disturbance event, plays an important role in several ecological processes by partially or completely removing the vegetation layer. The Wenchuan Earthquake (Richter scale 8) on May 12, 2008 in southwestern China caused widespread ecosystem damages in Longmenshan area. It is important to evaluate the natural vegetation recovery process and provide basic information on ecological aspects of the recovering environment after the earthquake. To circumvent weather limits of remote sensing in the Wenchuan earthquake-hit areas and to meet the need for regional observation analyses, three Landsat TM images pre-and post-earthquake in the Minjiang arid valley were used for analysis. The post-earthquake vegetation cover values were compared to the pre-earthquake value to determine the extent to which the vegetation was damaged in relation to the pre-earthquake pattern, and the rate of recovery was evaluated. Spatial characteristics of vegetation loss and natural recovery pattern were analyzed in relation to elevation, slope and aspect. Our study focused on the following four aspects: (1) to detect the changes in riparian vegetation cover at different stages of the Wenchuan earthquake sequence, (2) to analyze the difference/similarity in the spatial distribution and recovery trajectories of the damaged vegetation under different geomorphological conditions, (3) to understand to what extent does the vegetation cover reestablish after the earthquake and (4) to track the rate of post-earthquake vegetation recovery. Results of this study indicated that the severely damaged sites occurred mainly within the range of 1100-1700m elevation and on slopes of 25-55°. After three year of natural regeneration, 56. 20% of the destroyed areas were recovered. Moreover, there is a good correlation between recovery rate and both slope and elevation, and the recovery patterns are complicated in the damaged area. Our study showed that there was a high congruency between recovery rate and both slope and elevation, and the recovery patterns were complicated. Our analyses provided very useful information for decision-making and policy-planning in the arid valley of Minjiang River after the Wenchuan earthquake. Although the natural recovery for the vegetation is a slow process, most of the earthquake-induced damages can be restored to their original condition through natural succession. Thus, human assistance or disturbance may not be a good way to treat most of the damaged areas of natural vegetation regrowth capability. To assist the natural succession or original vegetation recovery, human interference and ecotechnology measures should only be introduced to areas where vegetation regrowth is difficult, such as the areas with unstable surfaces.
AUTHOR KEYWORDS: Riparian zone; Spectral unmixing; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: disturbance; earthquake magnitude; elevation; Landsat thematic mapper; monitoring; regeneration; riparian vegetation; Sichuan earthquake 2008; slope; vegetation cover; China; Longmen Mountains; Min River [Sichuan]; Sichuan; Wenchuan; Yingxiu
REFERENCES: Turner, Monica Goigel, Disturbance and landscape dynamics in a changing world, Ecology, 91, 10, pp. 2833-2849, (2010); 
Cochard, Roland, The 2004 tsunami in Aceh and Southern Thailand: A review on coastal ecosystems, wave hazards and vulnerability, Perspectives in Plant Ecology, Evolution and Systematics, 10, 1, pp. 3-40, (2008); 
Ouyang, Zhiyun, Impact assessment of Wenchuan Earthquake on ecosystems, Shengtai Xuebao, 28, 12, pp. 5801-5809, (2008); 
Bull Chin Acad Sci, (2008); 
Wu, Ning, A review of the impacts of earthquake on mountain ecosystems: Taking 5.12 Wenchuan Earthquake as an example, Shengtai Xuebao, 28, 12, pp. 5810-5819, (2008); 
Lu, Tao, Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: A case study in Mao County, Ecological Research, 27, 5, pp. 955-966, (2012); 
McClain, Michael E., Biogeochemical Hot Spots and Hot Moments at the Interface of Terrestrial and Aquatic Ecosystems, Ecosystems, 6, 4, pp. 301-312, (2003); 
Ranalli, Anthony J., The importance of the riparian zone and in-stream processes in nitrate attenuation in undisturbed and agricultural watersheds - A review of the scientific literature, Journal of Hydrology, 389, 3-4, pp. 406-415, (2010); 
Elderd, Bret D., The impact of changing flow regimes on riparian vegetation and the riparian species Mimulus guttatus, Ecological Applications, 13, 6, pp. 1610-1625, (2003); 
Helfield, James Mark, Effects of river restoration on riparian biodiversity in secondary channels of the Pite River, Sweden, Environmental Management, 49, 1, pp. 130-141, (2012)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Chen, Z., Lei, T., Yan, Q., Hu, H., Xiong, M.
AUTHOR FULL NAMES: Chen, Zhanpeng (55541285100); Lei, Tingwu (55823880800); Yan, Qinghong (35294236200); Hu, Heng (55541306100); Xiong, Mingbiao (55571200300)
55541285100; 55823880800; 35294236200; 55541306100; 55571200300
Study on the model for volume estimation of landslides by using 3-D laser scanner in Wenchuan earthquake area
(2013), 4, pp. 2655 - 2662, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881632274&partnerID=40&md5=803671f8e24cb615368ece7fa09fae5b

AFFILIATIONS: College of Water Resources and Civil Engineering, China Agricultural University, Beijing, China; Ecological Environment Monitoring of Sichuan Province Soil and Water Conservation, Chengdu, Sichuan, China
ABSTRACT: Wenchuan earthquake produced massive loosen landslides, which have become the main source of earthquake added soil erosion, to threaten the ecological system recovery and the production and livelihood security of the localities. The landslides in Wenchuan Town, Sichuan Province were measured by using 3-D laser scanner. The model of relationship between their horizontal projected areas and volumes were suggested in this study. The accuracy of the scanning was 20.0x20.0 cm at the place 200 m from the scanner. The geometry shape of landslide segmented was approximated as tetrahedron. The measurements of five typical landslides were used to calibrate a model to link landslide horizontal projected area to the volume. The model was verified by using Cyclone 6.0 software. This estimation model supplies an important basis for earthquake-added soil erosion forecast and volume estimation of earthquake area landslide by using remote-sensing image.
AUTHOR KEYWORDS: 3D laser scanner; Earthquake-triggered landslides; Volume estimation model; Wenchuan earthquake
INDEX KEYWORDS: Agriculture; Earthquakes; Erosion; Landslides; Laser applications; Scanning; Storms; 3D laser scanners; Earthquake-triggered landslides; Ecological systems; Estimation models; Remote sensing images; Typical landslide; Volume estimations; Wenchuan Earthquake; Three dimensional
REFERENCES: Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Cui, Peng, Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas, Ecological Engineering, 44, pp. 61-69, (2012); 
Malamud, Bruce D., Landslide inventories and their statistical properties, Earth Surface Processes and Landforms, 29, 6, pp. 687-711, (2004); 
Galli, Mirco, Comparing landslide inventory maps, Geomorphology, 94, 3-4, pp. 268-289, (2008); 
Imaizumi, Fumitoshi, Linkage of sediment supply and transport processes in Miyagawa Dam catchment, Japan, Journal of Geophysical Research: Earth Surface, 112, 3, (2007); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Qi, Shengwen, Spatial distribution analysis of landslides triggered by 2008.5.12 Wenchuan Earthquake, China, Engineering Geology, 116, 1-2, pp. 95-108, (2010); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
Imaizumi, Fumitoshi, Effects of forest harvesting on the occurrence of landslides and debris flows in steep terrain of central Japan, Earth Surface Processes and Landforms, 33, 6, pp. 827-840, (2008)
PUBLISHER: American Society of Agricultural and Biological Engineers hull@asabe.org 2950 Niles Road St. Joseph MI 49085-9659
CONFERENCE NAME: American Society of Agricultural and Biological Engineers Annual International Meeting 2013
CONFERENCE DATE: 2013-07-21 through 2013-07-24
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Lin, J.-W.
AUTHOR FULL NAMES: Lin, Jyh Woei (35435351700)
35435351700
Ionospheric anomaly at the occurring time of China's May 12, 2008, M = 7.9 Wenchuan Earthquake using nonlinear principal component analyses and image decoding
(2013) Egyptian Journal of Remote Sensing and Space Science, 16 (1), pp. 53 - 61, Cited 5 times.
DOI: 10.1016/j.ejrs.2012.11.005
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880923333&doi=10.1016%2Fj.ejrs.2012.11.005&partnerID=40&md5=7dcbfeec9595e095d162702d2fd92519

AFFILIATIONS: Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
ABSTRACT: Nonlinear principal component analysis (NLPCA) and image decoding are used to determine the spatial pattern of a total electron content (TEC) map anomaly in the ionosphere above China's Wenchuan earthquake of 12 May, 2008 (UT) (M <inf>w</inf> = 7.9). The earthquake occurred at 06:28:01UT and the time period examined using NLPCA is 06:00 to 08:00UT. The TEC map of previous time period is transformed to an input matrix of NLPCA using image decoding, and then the TEC anomaly found is widespread and less intense at an altitude of 200 km using NLPCA; however, it becomes more intense and localized with height up to an altitude of 300 km. This paper discusses potential causes of the anomaly with emphasis on very rising acoustic shockwaves and snow-plow effects on ionospheric electron plasma resulting from the mainshock of the earthquake. © 2012 National Authority for Remote Sensing and Space Sciences. Production and hosting by Elsevier B.V. All rights reserved. 36.
AUTHOR KEYWORDS: Nonlinear principal component analysis (NLPCA); Principal component analysis (PCA); Rising acoustic shockwaves; Snow-plow effects
INDEX KEYWORDS: Decoding; Earthquakes; Image analysis; Ionosphere; Nonlinear analysis; Snow; Snow plows; Input matrices; Ionospheric anomalies; Ionospheric electron; Nonlinear principal component analysis; Snow plow effect; Spatial patterns; Total electron content; Wenchuan Earthquake; Principal component analysis; anomaly; earthquake precursor; electron density; ionosphere; principal component analysis; shock wave; Sichuan earthquake 2008; China
REFERENCES: Artru, Juliette, Normal modes modelling of post-seismic ionospheric oscillations, Geophysical Research Letters, 28, 4, pp. 697-700, (2001); 
Elsner, James Brian, Hurricane intensity changes associated with geomagnetic variation, Atmospheric Science Letters, 2, 1-4, pp. 86-93, (2001); 
Freund, Friedemann T., Time-resolved study of charge generation and propagation in igneous rocks, Journal of Geophysical Research: Solid Earth, 105, B5, pp. 11001-11019, (2000); 
Fruchtman, Amnon, The snowplow in plasmas of nonuniform density, Physics of Fluids B, 4, 4, pp. 855-858, (1992); 
Garcia, Raphaël F., Three-dimensional ionospheric tomography of post-seismic perturbations produced by the Denali earthquake from GPS data, Geophysical Journal International, 163, 3, pp. 1049-1064, (2005); 
J Geophys Res, (1988); 
J Earthquake Predict Res, (1997); 
Hegai, Valery V., The ionospheric effect of atmospheric gravity waves excited prior to strong earthquake, Advances in Space Research, 37, 4, pp. 653-659, (2006); 
Jin, Shuanggen, Co-seismic ionospheric and deformation signals on the 2008 magnitude 8.0 Wenchuan Earthquake from GPS observations, International Journal of Remote Sensing, 31, 13, pp. 3535-3543, (2010); 
Kramer, Mark A., Nonlinear principal component analysis using autoassociative neural networks, AIChE Journal, 37, 2, pp. 233-243, (1991)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Tong, X., Lin, X., Feng, T., Xie, H., Liu, S., Hong, Z., Chen, P.
AUTHOR FULL NAMES: Tong, Xiaohua (55500134600); Lin, Xiaofei (55321044500); Feng, Tiantian (12782146100); Xie, Huan (36117406500); Liu, Shijie (55724717800); Hong, Zhonghua (57918901800); Chen, Peng (56881783400)
55500134600; 55321044500; 12782146100; 36117406500; 55724717800; 57918901800; 56881783400
Use of shadows for detection of earthquake-induced collapsed buildings in high-resolution satellite imagery
(2013) ISPRS Journal of Photogrammetry and Remote Sensing, 79, pp. 53 - 67, Cited 76 times.
DOI: 10.1016/j.isprsjprs.2013.01.012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875271340&doi=10.1016%2Fj.isprsjprs.2013.01.012&partnerID=40&md5=106b727dc5957071fc9375c451b7a1d2

AFFILIATIONS: College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
ABSTRACT: In this paper, we present a hybrid shadow-analysis approach that integrates the model- and property-based methods for detecting collapsed buildings after an earthquake using high-resolution satellite imagery. The framework of the proposed approach has four main steps. (1) The three-dimensional (3D) building model is established according to its footprint and height data stored in a geographical information system. (2) The theoretical shadow area of the building at the time that the post-seismic image was acquired is calculated. And the polygon of the ground shadow area of the building, which is called the theoretical ground shadow polygon, is extracted. (3) The theoretical ground shadow polygon is overlaid with the casting shadow area of the building, which is called the actual shadow area in the post-seismic satellite image, and the mean value of the digital number values of the post-seismic image pixels within the polygon of the theoretical shadow area is calculated. (4) The calculated mean value is compared with predefined thresholds, which are determined by the training pixels collected from the different types of shadows. On this basis, the shadows of totally collapsed, partially collapsed and uncollapsed buildings can be distinguished. A comprehensive experiment for Dujiangyan city, one of the urban areas most severely damaged in the May 2008 Wenchuan Earthquake, was conducted, and the experimental results showed the superiority of the proposed approach to the other existing ones. © 2013 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS).
AUTHOR KEYWORDS: Accuracy; Building collapse detection; Earthquake-induced damage assessment; High-resolution satellite image; Hybrid approach; Shadow analysis
INDEX KEYWORDS: Buildings; Damage detection; Earthquakes; Geographic information systems; Geometry; Pixels; Seismic waves; Three dimensional; Accuracy; Building collapse detections; Earthquake-induced damage; High resolution satellite images; Hybrid approach; Shadow analysis; Satellite imagery; accuracy assessment; detection method; GIS; hazard assessment; polygon; Sichuan earthquake 2008; three-dimensional modeling; urban area; China; Dujiangyan; Sichuan; Wenchuan
REFERENCES: Al-Khudhairy, Delilah H.A., Structural damage assessments from Ikonos data using change detection, object-oriented segmentation, and classification techniques, Photogrammetric Engineering and Remote Sensing, 71, 7, pp. 825-837, (2005); 
Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
Brunner, Dominik, Earthquake damage assessment of buildings using VHR optical and SAR imagery, IEEE Transactions on Geoscience and Remote Sensing, 48, 5, pp. 2403-2420, (2010); 
Cheng, D., Delimiting the building heights in a city from the shadow in a panchromatic SPOT-image-part 1. Test of forty-two buildings, International Journal of Remote Sensing, 16, 3, pp. 409-415, (1995); 
Chini, Marco, Exploiting SAR and VHR optical images to quantify damage caused by the 2003 bam earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 145-152, (2009); 
Corbane, Christina, A comprehensive analysis of building damage in the 12 January 2010 MW7 Haiti earthquake using high-resolution satelliteand aerial imagery, Photogrammetric Engineering and Remote Sensing, 77, 10, pp. 997-1009, (2011); 
Dare, Paul Maxwell, Shadow analysis in high-resolution satellite imagery of urban areas, Photogrammetric Engineering and Remote Sensing, 71, 2, pp. 169-177, (2005); 
Guo, Huadong, An improved automatic detection method for earthquake-collapsed buildings from ADS40 image, Chinese Science Bulletin, 54, 18, pp. 3303-3307, (2009); 
Hussain, Ejaz, Building extraction and rubble mapping for city Port-au-Prince post-2010 earthquake with GeoEye-1 imagery and lidar data, Photogrammetric Engineering and Remote Sensing, 77, 10, pp. 1011-1023, (2011); 
Irvin, R. Bruce, Methods for Exploiting the Relationship Between Buildings and Their Shadows in Aerial Imagery, IEEE Transactions on Systems, Man and Cybernetics, 19, 6, pp. 1564-1575, (1989)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Peng, Y., Wang, Y., Fu, B., Ma, F.
AUTHOR FULL NAMES: Peng, Yi (59608364800); Wang, Yukuan (57217193361); Fu, Bin (57207275508); Ma, Fei (55614909500)
59608364800; 57217193361; 57207275508; 55614909500
Spatial distribution of carbon storage function and seismic damage in wenchuan earthquake stricken areas
(2013) Shengtai Xuebao, 33 (3), pp. 798 - 808, Cited 9 times.
DOI: 10.5846/stxb201203260414
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874625752&doi=10.5846%2Fstxb201203260414&partnerID=40&md5=5b7cbbb9704bdddfa87db70bc616eb83

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Chengdu University of Technology, Chengdu, China
ABSTRACT: The value of terrestrial ecosystem carbon sequestration services has been widely recognized. Forests, grasslands and other ecosystems can store large amounts of carbon, which is the key to mitigating global climate change. The eco- environment of the western region of Sichuan Province was greatly destroyed by the earthquake which had occurred in Wenchuan on May 12, 2008. One of the direct impacts is that the landscape was seriously damaged and the disturbed eco- system released a significant amount of carbon dioxide because of sudden changes inland utilization and vegetation cover. Our goal was to use the maps of land use and land cover types and data of carbon reserves stocks in four carbon pools to estimate the amount of carbon stored in a landscape currently and the pre-seismic amount of carbon in the earthquake-hit areas, and then we have got a series of maps which can help us to conduct carbon management. Based on the geographical information system software of ArcGIS, this paper presented the evaluation index system to assess the carbon storage function of the earthquake-hit area, by calculating the density of carbon storage for four carbon pools (aboveground biomass, underground biomass, soil carbon and dead organic matter) in each grid. In addition, this paper also analyzed the spatial pattern of carbon storage function in this area. The results showed that the total carbon storage volume of the earthquake-hit area is 3. 97×108 t based on the spatial analysis module of ArcGIS and the average carbon density is 52. 2 t/ hm2. The ecosystem with the highest carbon storage and carbon density is represented by subalpine evergreen coniferous forest. The carbon storage volume increased with the increasing slope gradient and altitude. The carbon storage volume in the area where the slope is greater than 35°is 1. 3×108 t, accounts for 33. 9% of the total carbon storage volume in the earthquake- hit area. Because of the forests was destroyed by the powerful earthquake, the function of carbon storage presents a suddenly drop sat altitude of 750-1750m. In addition, the impact of earthquakes on the carbon storage is that the carbon stocks lowered primarily owing to vegetation damage, with the overall reduction reaching 9. 98×106 t. The most severely degraded areas are located in the northern mountains of Pengzhou County and Shifang County, along the southwestward extension of the Longmen Mountain. The recommendations of post-disaster reconstruction, vegetation and carbon management are listed as follows. 1) Expanding the area of forest coverage and improving forest quality is a key point to play an important role in forest carbon storage. 2) The vegetation restoration in the earthquake-hit area is given priority to the natural restoration approach of forest reservation, complementary with artificial approaches, such as artificial reforestation and landslide engineering control measures. The risk of secondary disasters can be decreased while ecosystem carbon storage function of the destroyed area is reconstructed. 3) To enhance the carbon contributions of farmland and grazing land area by pushing no-tillage agriculture, developing ecological agriculture, establishing a series of measures to improve comprehensive utilization (e. g., taking the action of returning straw to the field instead of burning them), and strengthening the carrying capacity control of prairie areas. Our results will help guide the vegetation recovery, carbon management and carbon trading. But most importantly, they can support a series of decisions made by government sat various levels in the earthquake-hit areas.
AUTHOR KEYWORDS: Carbon storage; Ecosystem function; GIS; Wenchuan earthquake
INDEX KEYWORDS: biomass; carbon dioxide; carbon sequestration; carrying capacity; coniferous forest; ecosystem function; GIS; global climate; landscape; landslide; prairie; reforestation; restoration ecology; risk factor; seismic hazard; Sichuan earthquake 2008; soil carbon; soil organic matter; spatial distribution; terrestrial ecosystem; trade-environment relations; vegetation cover; volume; zero tillage; China; Longmen Mountains; Sichuan
REFERENCES: Economics of Climate Change the Stern Review, (2007); 
Canadell, Josep G., Managing forests for climate change mitigation, Science, 320, 5882, pp. 1456-1457, (2008); 
State and Trends of the Carbon Market 2009, (2008); 
Forging A Frontier State of the Voluntary Carbon Markets 2008, (2008); 
Pagiola, Stefano, Payments for environmental services in Costa Rica, Ecological Economics, 65, 4, pp. 712-724, (2008); 
Prepared by the National Greenhouse Gas Inventories Programme, (2006); 
Lal, Rattan A., Soil carbon sequestration impacts on global climate change and food security, Science, 304, 5677, pp. 1623-1627, (2004); 
Wu, Dan, Carbon fixation estimation for the main plantation forest species in the red soil hilly region of southern-central Jiangxi Province, China, Shengtai Xuebao, 32, 1, pp. 142-151, (2012); 
Peng, Shouzhang, Spatial distribution characteristics of the biomass and carbon storage of Qinghai spruce (Picea crassifolia) forests in Qilian Mountains, Chinese Journal of Applied Ecology, 22, 7, pp. 1689-1694, (2011); 
Ecological Studies, (1980)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Huang, R., Huang, J., Ju, N., He, C., Li, W.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Huang, Jian (56063226300); Ju, Nengpan (8377755300); He, Chaoyang (36918503300); Li, Weile (25936551300)
55835407700; 56063226300; 8377755300; 36918503300; 25936551300
WebGIS-based information management system for landslides triggered by Wenchuan earthquake
(2013) Natural Hazards, 65 (3), pp. 1507 - 1517, Cited 22 times.
DOI: 10.1007/s11069-012-0424-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871936882&doi=10.1007%2Fs11069-012-0424-x&partnerID=40&md5=3cea46c9fa94b181b729a2be95553814

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A digital landslide database has been created for Sichuan province, where a magnitude 8. 0 earthquake at 2:28 p. m. on May 12, 2008, to provide the authorities and scientific communities with a tool for landslide risk assessment, emergency management, land-use planning, development of early warning system and enhancement of public awareness of natural hazards. Landslide data have been obtained from a variety of sources including technical reports and landslide inventory maps, and most of which were based on fieldwork and interpretation of aerial photographs. This paper presents the sources of landslide information, database design and the webGIS-based information management system. The database currently contains spatial information for about 9,000 landslides that were mostly triggered by the earthquake. Slide is the most common type of landslide in the database, but other types including rockfall and debris flow have also been identified. The website is an online GIS, providing access to comprehensive landslide information via the Internet. The development of the website allowed us to define the state of knowledge on landslide processes in Sichuan and to provide a preliminary identification of areas affected by landslides. © 2012 Springer Science+Business Media Dordrecht.
AUTHOR KEYWORDS: Information management system; Landslide database; WebGIS; Wenchuan earthquake
INDEX KEYWORDS: database; early warning system; GIS; hazard management; identification method; information management; land use planning; landslide; risk assessment; Sichuan earthquake 2008; trigger mechanism; World Wide Web
REFERENCES: Devoli, Graziella, A landslide database for Nicaragua: A tool for landslide-hazard management, Landslides, 4, 2, pp. 163-176, (2007); 
Dunbar, Paula K., Increasing public awareness of natural hazards via the Internet, Natural Hazards, 42, 3, pp. 529-536, (2007); 
Glade, Thomas W., Towards a national landslide information base for New Zealand, New Zealand Geographer, 52, 1, pp. 29-40, (1996); 
Chin J Geol Hazard Control, (2005); 
Geoscience and Remote Sensing IEEE International Symposium, (2004); 
Mathiyalagan, V., A WebGIS and geodatabase for Florida's wetlands, Computers and Electronics in Agriculture, 47, 1, pp. 69-75, (2005); 
Rathore, Devendra Singh, A Web GIS Application for Dams and Drought in India, Journal of the Indian Society of Remote Sensing, 38, 4, pp. 670-673, (2010); 
Rasdorf, William J., Information management at state highway departments: Issues and needs, Journal of Transportation Engineering, 126, 2, pp. 134-142, (2000); 
Dikau, Richard, Databases and GIS for landslide research in Europe, Geomorphology, 15, 3-4 SPEC. ISS., pp. 227-239, (1996); 
Romang, Hans E., IFKIS-Hydro: An early warning and information system for floods and debris flows, Natural Hazards, 56, 2, pp. 509-527, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Wang, M., Shi, P.
AUTHOR FULL NAMES: Yang, Wentao (55499294400); Wang, Ming (55732001400); Shi, Peijun (7202160985)
55499294400; 55732001400; 7202160985
Using MODIS NDVI time series to identify geographic patterns of landslides in vegetated regions
(2013) IEEE Geoscience and Remote Sensing Letters, 10 (4), art. no. 6341795, pp. 707 - 710, Cited 77 times.
DOI: 10.1109/LGRS.2012.2219576
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870885289&doi=10.1109%2FLGRS.2012.2219576&partnerID=40&md5=040ff0c2570ad513d196cf2d88df02ef

AFFILIATIONS: Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China
ABSTRACT: The 2008 Wenchuan Earthquake that occurred in a mountainous region of China induced massive landslides and caused numerous casualties and property losses. Analyzing the disturbances on vegetation detected from the abnormal sudden drops of the normalized difference vegetation index (NDVI) within a short period can be used for the purpose of rapid landslide identification. Although much research has confirmed the necessity of high-resolution satellite images in landslides identification, Moderate Resolution Imaging Spectroradiometry (MODIS) products still have their usefulness for high temporal resolution, as investigated by the authors. Using MODIS MOD09Q1 NDVI products at a temporal interval of 8 days during 2008, this letter presents a method that has been developed to identify landslide distribution and evolution patterns. First, to find the optimal threshold, the MODIS NDVI time series are analyzed in a training area by an iteration searching procedure. Second, the chosen threshold is used in a larger validation area. To examine the effectiveness of the proposed method, the results are compared to interpreted landslides using SPOT5 images with a spatial resolution of 2.5 m acquired before and after the main shock. An overall 75% accuracy is achieved, and better consistency is observed for landslides extending over one MODIS pixel. The proposed method has also been applied to the Wenchuan earthquake affected areas with seismic intensity IX and greater, and the similar spatial pattern of landslides distribution is obtained when compared with results by using high-resolution images and field investigation. This technique can be applied practically for rapid landslide assessment at a relatively large region after a major earthquake or other severe disturbance events. © 2012 IEEE.
AUTHOR KEYWORDS: Earthquake; landslide identification; normalized difference vegetation index (NDVI) time series; remote sensing
INDEX KEYWORDS: Affected area; Field investigation; Geographic pattern; High resolution image; High resolution satellite images; High temporal resolution; Landslide identification; Large regions; Main shock; Moderate resolution; Mountainous regions; NDVI time series; Normalized difference vegetation index; Normalized difference vegetation index time series; Optimal threshold; Property loss; Seismic intensity; Short periods; Spatial patterns; Spatial resolution; Spectroradiometry; Temporal intervals; Wenchuan Earthquake; Earthquakes; Iterative methods; Radiometers; Remote sensing; Time series; Landslides
REFERENCES: Mantovani, Franco, Remote sensing techniques for landslide studies and hazard zonation in Europe, Geomorphology, 15, 3-4 SPEC. ISS., pp. 213-225, (1996); 
Proceedings of the 5th International Symposium on Landslides, (1988); 
Geologia Tecnica, (1991); 
Metternicht, Graciela I., Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, 98, 2-3, pp. 284-303, (2005); 
Rossi, Mauro, Optimal landslide susceptibility zonation based on multiple forecasts, Geomorphology, 114, 3, pp. 129-142, (2010); 
Mondini, Alessandro C., Semi-automatic recognition and mapping of rainfall induced shallow landslides using optical satellite images, Remote Sensing of Environment, 115, 7, pp. 1743-1757, (2011); 
Stumpf, André, Object-oriented mapping of landslides using Random Forests, Remote Sensing of Environment, 115, 10, pp. 2564-2577, (2011); 
Lu, Ping, Object-oriented change detection for landslide rapid mapping, IEEE Geoscience and Remote Sensing Letters, 8, 4, pp. 701-705, (2011); 
Martha, Tapas Ranjan, Characterising spectral, spatial and morphometric properties of landslides for semi-automatic detection using object-oriented methods, Geomorphology, 116, 1-2, pp. 24-36, (2010); 
Martha, Tapas Ranjan, Segment optimization and data-driven thresholding for knowledge-based landslide detection by object-based image analysis, IEEE Transactions on Geoscience and Remote Sensing, 49, 12 PART 1, pp. 4928-4943, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Duan, X., Tian, Z., Ding, M., Zhao, W.
AUTHOR FULL NAMES: Duan, Xifa (36604262900); Tian, Zheng (7202984846); Ding, Mingtao (24314842800); Zhao, Wei (55574199499)
36604262900; 7202984846; 24314842800; 55574199499
Registration of remote-sensing images using robust weighted kernel principal component analysis
(2013) AEU - International Journal of Electronics and Communications, 67 (1), pp. 20 - 28, Cited 13 times.
DOI: 10.1016/j.aeue.2012.05.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870061096&doi=10.1016%2Fj.aeue.2012.05.011&partnerID=40&md5=2aa0248bfaddcff7aca029c2686b64a2

AFFILIATIONS: Department of Applied Mathematics, Northwestern Polytechnical University, Xi'an, Shaanxi, China; Department of Applied Mathematics, Taiyuan University of Science and Technology, Taiyuan, China; Pratt School of Engineering, Durham, NC, United States
ABSTRACT: For pre- and post-earthquake remote-sensing images, registration is a challenging task due to the possible deformations of the objects to be registered. To overcome this problem, a registration method based on robust weighted kernel principal component analysis is proposed to precisely register the variform objects. Firstly, a robust weighted kernel principal component analysis (RWKPCA) method is developed to capture the common robust kernel principal components (RKPCs) of the variform objects. Secondly, a registration approach is derived from the projection on RKPCs. Finally, two experiments are conducted on the SAR image registration in Wenchuan earthquake on May 12, 2008, and the results showed that the method is very effective in capturing structure patterns and generalized well for registration. © 2012 Elsevier GmbH.
AUTHOR KEYWORDS: Graph spectral method; Kernel principal component analysis (KPCA); Outliers; Remote-sensing image; Robust weighted KPCA; Variform object
INDEX KEYWORDS: Graph spectral methods; Kernel principal component analyses (KPCA); Outliers; Remote sensing images; Robust weighted KPCA; Variform object; Earthquakes; Image registration; Remote sensing; Synthetic aperture radar; Principal component analysis
REFERENCES: Brown, Lisa Gottesfeld, A survey of image registration techniques, ACM Computing Surveys, 24, 4, pp. 325-376, (1992); 
Zitová, Barbara, Image registration methods: A survey, Image and Vision Computing, 21, 11, pp. 977-1000, (2003); 
Ye, Famao, Automatic multi-resolution image registration based on genetic algorithm and Hausdorff distance, Chinese Optics Letters, 4, 7, pp. 386-388, (2006); 
Aguilar, Wendy, A robust Graph Transformation Matching for non-rigid registration, Image and Vision Computing, 27, 7, pp. 897-910, (2009); 
Bentoutou, Youcef, An automatic image registration for applications in remote sensing, IEEE Transactions on Geoscience and Remote Sensing, 43, 9, pp. 2127-2137, (2005); 
Xiong, Zhen, A novel interest-point-matching algorithm for high-resolution satellite images, IEEE Transactions on Geoscience and Remote Sensing, 47, 12, pp. 4189-4200, (2009); 
Liu, Xiangzeng, A novel adaptive weights proximity matrix for image registration based on R-SIFT, AEU - International Journal of Electronics and Communications, 65, 12, pp. 1040-1049, (2011); 
Goshtasby, Ardeshir A., 2-D and 3-D Image Registration: For Medical, Remote Sensing, and Industrial Applications, pp. 1-258, (2005); 
Dawn, Suma, Remote sensing image registration techniques: A survey, Lecture Notes in Computer Science, 6134 LNCS, pp. 103-112, (2010); 
Scott, G. L., An algorithm for associating the features of two images, Proceedings of the Royal Society B: Biological Sciences, 244, 1309, pp. 21-26, (1991)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Dang, C., Chu, N., Ding, Y.
AUTHOR FULL NAMES: Dang, Chao (18433637500); Chu, Nana (57390737300); Ding, Yu (35796958300)
18433637500; 57390737300; 35796958300
Natural dam break forecasting by use of dambrk model
(2012) Advanced Materials Research, 594-597, pp. 2262 - 2266, Cited 1 times.
DOI: 10.4028/www.scientific.net/AMR.594-597.2262
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871068949&doi=10.4028%2Fwww.scientific.net%2FAMR.594-597.2262&partnerID=40&md5=511ef38d5d6f51f2a08dc2f892498b3e

AFFILIATIONS: China Three Gorges University, Yichang, Hubei, China
ABSTRACT: The Dam Break model (DamBrk) developed by Fread was the most famous parametric dam break forecasting model with flexible inputs, and typically widely used for embankments or other man-made dams failure. The paper aims to discuss the parameter selection and calculation for natural dams, which are used as necessary input in The DamBrk model. And then the Tangjiashan landslide dams formed in 2008 Wenchuan earthquake is utilized to test the reasonability of DamBrk model. Outcomes shows that computed outflow volume through breach coincides with the observed values in magnitude when appropriate breach times be assumed. The methods put forth herein can also be helpful for the early warning and human evacuation of other natural dams. © (2012) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: Case study; Dam break model; Natural dam; Parameter
INDEX KEYWORDS: Dam-breaks; Early warning; Forecasting models; Human evacuation; Landslide dam; Natural dam; Parameter; Parameter selection; Reasonability; Wenchuan Earthquake; Civil engineering; Earthquakes; Dams
REFERENCES: Proceedings27th IAHR Congress, (1997); 
National Weather Service, (1988); 
Singh, Vijay P., Breach erosion of earthfill dams (BEED) model, Natural Hazards, 1, 2, pp. 161-180, (1988); 
Delft University of Technology, (2006); 
Ponce, Víctor Miguel, MODELING GRADUAL DAM BREACHES, American Society of Civil Engineers, Journal of the Hydraulics Division, 107, 7, pp. 829-838, (1981); 
Hanson, Gregory J., Prediction of headcut migration using a deterministic approach, Transactions - American Society of Agricultural Engineers: General Edition, 44, 3, pp. 525-531, (2001); 
Fread, Danny L., The development and testing of a dam-break flood forecasting model., pp. 164-197, (1977); 
Dam Safety 93, (1993); 
Costa, John E., FORMATION AND FAILURE OF NATURAL DAMS., Bulletin of the Geological Society of America, 100, 7, pp. 1054-1068, (1988); 
Walder, Joseph S., Methods for predicting peak discharge of floods caused by failure of natural and constructed earthen dams, Water Resources Research, 33, 10, pp. 2337-2348, (1997)
CONFERENCE NAME: 2012 Global Conference on Civil, Structural and Environmental Engineering, GCCSEE 2012 and the 3rd International Symposium on Multi-field Coupling Theory of Rock and Soil Media and Its Applications, MCTRSM 2012
CONFERENCE DATE: 2012-10-20 through 2012-10-21
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Meng, H., Qiao, J.
AUTHOR FULL NAMES: Meng, Huajun (57203635353); Qiao, Jianping (24485090400)
57203635353; 24485090400
The spatial distribution characteristics of seismic induced geo-hazards and ground damage classification in baisha river
(2012) Advanced Materials Research, 594-597, pp. 1727 - 1733, Cited 0 times.
DOI: 10.4028/www.scientific.net/AMR.594-597.1727
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871045126&doi=10.4028%2Fwww.scientific.net%2FAMR.594-597.1727&partnerID=40&md5=29802dfba1d18ffc77f399fc3c4790ea

AFFILIATIONS: Institute of Mountain Disaster and Environment, Chinese Academy of Sciences, Beijing, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Baisha river basin was extremely destroyed by the Wenchuan earthquake. This paper extracted the seismic-induced geological disasters data about 26km2 within an area of 368.25km2 by remote sensing interpretation and field investigation. This paper used arcgis to analysis these data, and divided the basin into several belts or zones base on slope, aspect, elevation and stratum lithology. The geo-hazard distribution analysis model was built to find some correlation between disaster distribution and geological factors such as terrain, stratum lithology and geomorphology by comparing among the parameters P<inf>s</inf>, P<inf>h</inf>, and P<inf>c</inf>. The results show that most hazards occur where the slope between 30° and 50°, or aspect range is112.5° to 202.5°, and or the elevation between1140m and 3140m, the stratum lithology are the Huangshuihe group and The Middle Proterozoic common granite. At last the research zone is classified into four levels base on ground destroyed grade, and results show that the belts of most hazards located are not always the one destroyed most heavily. © (2012) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: Baisha basin; Destruction classification; Distribution characteristic; Seismic induced geo-hazard
INDEX KEYWORDS: Baisha basin; Damage classification; Distribution analysis; Distribution characteristics; Field investigation; Geological disaster; Geological factors; Proterozoic; Remote sensing interpretation; River basins; Seismic induced geo-hazard; Wenchuan Earthquake; Civil engineering; Earthquakes; Factor analysis; Lithology; Remote sensing; Hazards
REFERENCES: Chinese Journal of Rock Mechanics and Engineering, (2009); 
Journal of Geomechanics, (2010); 
Hydrogeology Engineering Geology, (2009); 
Earth Science Journal of China University of Geosciences, (2011); 
Journal of Engineering Geology, (2009); 
Journal of Cata Strophology, (2009); 
Journal of Natural Disasters, (2009); 
Journal of Engineering Geology, (2009); 
Geological Bulletin of China, (2009); 
Journal of Remote Sensing, (2008)
CONFERENCE NAME: 2012 Global Conference on Civil, Structural and Environmental Engineering, GCCSEE 2012 and the 3rd International Symposium on Multi-field Coupling Theory of Rock and Soil Media and Its Applications, MCTRSM 2012
CONFERENCE DATE: 2012-10-20 through 2012-10-21
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Guo, G., Leihua, Y., Pinggen, Z., Han, H.
AUTHOR FULL NAMES: Guo, Yufei (55754692600); Leihua, Yao (57217189078); Pinggen, Zhou (55654400100); Han, Bing (55248971800)
55754692600; 57217189078; 55654400100; 55248971800
Deformation mechanism and trend research on a creep landslide in Sichuan province of China
(2012) Electronic Journal of Geotechnical Engineering, 17 X, pp. 3415 - 3428, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876375788&partnerID=40&md5=731e9549d43c7a292bd921e1c25354fc

AFFILIATIONS: School of Engineering and Technology, Beijing, China; China Institute of Geo-Environment Monitoring, Beijing, China
ABSTRACT: The Xiakou landslide is located north of Ya'an City in the Sichuan province of China, at the transitional belt of the Sichuan Basin and the Tibetan Plateau, and 120 km from Yingxiu Town (the epicenter of the Wenchuan earthquake measuring 8.0 on the Richter scale). The Xiakou landslide is one of the most common and destructive landslides in the Ya'an area. This landslide was formed in a layer of colluvium and can be classified as a creep landslide. Monitoring data from 2006 to 2010 were used to analyze the deformation characteristics of the different parts of the landslide. The limit equilibrium method was employed to identify the influence of the water table to slope stability during different seasons. The deformation trend of the landslide was predicted by analyzing incline displacements before and after the Wenchuan earthquake. Based on these analyses, suggestions for the monitoring and early warning of the Xiakou landslide are proposed. © 2012 ejge.
AUTHOR KEYWORDS: Creep landslide; Deformation mechanism and trend; Landslide monitoring; Wenchuan earthquake
INDEX KEYWORDS: Deformation Characteristics; Deformation mechanism; Deformation trend; Landslide monitoring; Limit equilibrium methods; Sichuan province; Tibetan Plateau; Wenchuan Earthquake; Earthquakes; Landslides; Slope protection; Creep; creep; deformation mechanism; landslide; Sichuan earthquake 2008; slope stability; China; Sichuan
REFERENCES: Lansford, J., Conquering the mountain, Civil Engineering, 69, 10, pp. 32-37, (1999); 
International Conference on Geotechnical and Geological Engineering, (2000); 
Landslide Displacement Dynamics Theory and Its Applications Several Typical Colluvium Landslide in Three Gorges Reservoir Area, (2007); 
Journal of Engineering Geology, (2001); 
Railway Engineering, (2007); 
He, Pengpeng, Reliability analysis of Xiakou slope under multiple-stochastic-factor conditions, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 32, 6, pp. 930-937, (2010); 
Assessment Report on the Area Range of Wenchuan Earthquake Disaster in Chinese, (2008); 
Wenchuan Earthquake Geohazards, (2009); 
Ya an City Records in Chinese, (2002); 
Sichuan Hydraulic, (1998)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, S.
AUTHOR FULL NAMES: Jin, Shuanggen (7401822381)
7401822381
GNSS atmopheric seismology: A case study of the 2008 Mw7.9 Wenchuan earthquake
(2012) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6351896, pp. 7504 - 7507, Cited 1 times.
DOI: 10.1109/IGARSS.2012.6351896
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873189807&doi=10.1109%2FIGARSS.2012.6351896&partnerID=40&md5=5473bc17a5eb1f20bf9334595effd487

AFFILIATIONS: Shanghai Astronomical Observatory Chinese Academy of Sciences, Shanghai, Shanghai, China
ABSTRACT: Robust seismic signals around the globe could estimate the gross nature of earthquakes, but the details are usually unclear due to the lack of near-field observations. Although ground measurements, e.g., GNSS/InSAR and strong motion measurements, provide unique insights on the kinematic rupture and nature of the earthquake, but the temporal-spatial resolutions are still limited. In this paper, GNSS atmospheric seismology is proposed and a case study of the 2008 Wenchuan earthquake is performed using ground GNSS measurements. Significant ionospheric disturbances are found at continuous GNSS sites near the epicenter with an intensive N-shape shock-acoustic wave propagating south-eastward, almost consisting with seismometer, indicating that the co-seismic ionospheric TEC disturbances were mainly derived from the main shock. Furthermore, the co-seismic tropospheric anomalies during the mainshock are also found, mainly in the zenith hydrostatic delay component (ZHD), which is supported by the same pattern of surface observed atmospheric pressure changes at co-located GNSS site that are driven by the ground-coupled air waves from ground vertical motion of seismic waves propagating. Therefore, the co-seismic atmospheric disturbances indicate again the acoustic coupling effect of the atmosphere and solid-Earth with air wave propagation from the ground to the top atmosphere. © 2012 IEEE.
AUTHOR KEYWORDS: Coseismic atmospheric disturbance; GNSS; GNSS Atmospheric Seismology; Wenchuan Earthquake
INDEX KEYWORDS: Acoustic coupling; Air waves; Atmospheric disturbance; Co-located; Delay component; GNSS; Ground measurements; Ionospheric disturbance; Mainshock; Near-field; Seismic signals; Strong motion; Vertical motions; Wenchuan Earthquake; Atmospheric pressure; Earth atmosphere; Geology; Remote sensing; Seismic waves; Earthquakes
REFERENCES: Afraimovich, Edward L., TEC response to the 2008 Wenchuan Earthquake in comparison with other strong earthquakes, International Journal of Remote Sensing, 31, 13, pp. 3601-3613, (2010); 
Bernese GPS Software Version 5 0, (2007); 
Jin, Shuanggen, Lower atmospheric anomalies following the 2008 Wenchuan Earthquake observed by GPS measurements, Journal of Atmospheric and Solar-Terrestrial Physics, 73, 7-8, pp. 810-814, (2011); 
Jin, Shuanggen, Co-seismic ionospheric and deformation signals on the 2008 magnitude 8.0 Wenchuan Earthquake from GPS observations, International Journal of Remote Sensing, 31, 13, pp. 3535-3543, (2010); 
Jin, Shuanggen, GPS observations of the ionospheric F2-layer behavior during the 20th November 2003 geomagnetic storm over South Korea, Journal of Geodesy, 82, 12, pp. 883-892, (2008); 
Documentation for the Gamit GPS Analysis Software, (1999); 
Kiryushkin, Vladislav V., Determining the parameters of ionospheric perturbation caused by earthquakes using the quasi-optimum algorithm of spatiotemporal processing of TEC measurements, Earth, Planets and Space, 59, 4, pp. 267-278, (2007); 
Saastamoinen, Jouko, Contributions to the theory of atmospheric refraction - Part II. Refraction corrections in satellite geodesy, Bulletin Geodesique, 47, 1, pp. 13-34, (1973); 
J Geophys Res, (1968); 
Watada, Shingo, Atmospheric pressure change associated with the 2003 Tokachi-Oki earthquake, Geophysical Research Letters, 33, 24, (2006)
SPONSORS: Geoscience and Remote Sensing Society (GRS)
CONFERENCE NAME: 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
CONFERENCE DATE: 2012-07-22 through 2012-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Gong, L., An, L., Liu, M., Zhang, J.
AUTHOR FULL NAMES: Gong, Lixia (8281807900); An, Liqiang (44060947200); Liu, Mingzhong (55575990800); Zhang, Jingfa (14032411600)
8281807900; 44060947200; 55575990800; 14032411600
Road damage detection from high-resolution RS image
(2012) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6351235, pp. 990 - 993, Cited 17 times.
DOI: 10.1109/IGARSS.2012.6351235
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873136645&doi=10.1109%2FIGARSS.2012.6351235&partnerID=40&md5=4d9dfb31acf8554df0bbd485ae655a2e

AFFILIATIONS: Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; Institute of Remote Sensing and GIS, Peking University, Beijing, China; Earthquake Administration of Tianjin Municipality, Tianjin, China
ABSTRACT: This paper presents a road damage extraction method based on object-oriented change detection method using road vector data overlaid on post-earthquake image. It is complex to identify all kinds of road damages in earthquakes. For the purpose of traffic capacity analysis, focusing on roads in good condition will simplify the problem, no matter how the roads are destroyed. The whole road line is provided by road network vector of appropriate scale. Subtract the good road and the damaged parts are clearly shown. This method can realize quantitative analysis on road seismic damage when lack of pre-earthquake images. In this paper it is applied to road damage extraction in Wenchuan earthquake, using high resolution remote sensing images shot just several days after the event. © 2012 IEEE.
AUTHOR KEYWORDS: high resolution; Road extraction; Wenchuan earthquake
INDEX KEYWORDS: Change detection; Extraction method; High resolution; High resolution remote sensing images; High-resolution RS images; Object oriented; Road damage; Road extraction; Road network; Seismic damage; Traffic capacity analysis; Vector data; Wenchuan Earthquake; Damage detection; Geology; Remote sensing; Roads and streets; Earthquakes
REFERENCES: Remote Sensing Technology and Application, (2009); 
Remote Sensing Technology and Application, (2009); 
Suetens, Paul L., Computational Strategies for Object Recognition, ACM Computing Surveys, 24, 1, pp. 5-62, (1992); 
Wang, Fangju, A Knowledge-Based System for Highway Network Extraction, IEEE Transactions on Geoscience and Remote Sensing, 26, 5, pp. 525-531, (1988); 
Kass, Michael, Snakes: Active contour models, International Journal of Computer Vision, 1, 4, pp. 321-331, (1988); 
Gruen, Armin W., Road extraction from aerial and satellite images by dynamic programming, ISPRS Journal of Photogrammetry and Remote Sensing, 50, 4, pp. 11-20, (1995); 
Hu, Jianying, Interactive road finding for aerial images, Proceedings of IEEE Workshop on Applications of Computer Vision, 1992-November, pp. 56-63, (1992); 
Wang, Jinfei, Linda — a system for automated linear feature detection and analysis, Canadian Journal of Remote Sensing, 19, 1, pp. 9-21, (1993); 
Quackenbush, Lindi J., A review of techniques for extracting linear features from imagery, Photogrammetric Engineering and Remote Sensing, 70, 12, pp. 1383-1392, (2004); 
Karnieli, Arnon M., Automatic extraction and evaluation of geological linear features from digital remote sensing data using a hough transform, Photogrammetric Engineering and Remote Sensing, 62, 5, pp. 525-531, (1996)
SPONSORS: Geoscience and Remote Sensing Society (GRS)
CONFERENCE NAME: 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
CONFERENCE DATE: 2012-07-22 through 2012-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wu, M.-C., Liu, J., Yan, H., Mason, P.J.
AUTHOR FULL NAMES: Wu, Mengche (57318518000); Liu, Jianguo (36077207500); Yan, Hongshi (25029236700); Mason, Philippa Jane (7401794545)
57318518000; 36077207500; 25029236700; 7401794545
Three-dimensional surface displacement map of the 2008 Wenchuan earthquake derived from Phase Correlation (PC) sub-pixel offset method and Adaptive Local Kriging (alk) DInSAR data
(2012) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6350560, pp. 3899 - 3902, Cited 2 times.
DOI: 10.1109/IGARSS.2012.6350560
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873120581&doi=10.1109%2FIGARSS.2012.6350560&partnerID=40&md5=5c61960fa3a43b0c3e909d663782d5c2

AFFILIATIONS: Department of Earth Science and Engineering, Imperial College London, London, United Kingdom
ABSTRACT: Differential Interferometric Synthetic Aperture Radar (DInSAR) is an effective technique to measures the surface displacement caused by strong earthquakes, such as the 2008 Wenchuan earthquake in China. However, in the area subject to the most significant deformation along the Longmenshan fault zone, the coherence between pre- and after- earthquake SAR images is completely lost because of the earthquake induced violent and chaotic destruction on the land surface and consequently, no surface displacement data can be measured. The missing data were recovered using Adaptive Local Kriging (ALK) method to produce a complete Line Of Sight (LOS) displacement map. As a further step to characterize the 3D (three-dimensional) co-seismic deformation, horizontal displacement maps were generated using the Phase Correlation based Image Analysis System (PCIAS), and in combination with the ALK DInSAR data, the vertical displacement map can then be decomposed. Thus, a 3D displacement dataset is accomplished. This dataset shows the thrust and right-lateral strike slip motions along the Longmenshan fault system with two major uplift in Yingxiu and Beichuan areas respectively. © 2012 IEEE.
AUTHOR KEYWORDS: Adaptive Local Kriging; Coseismic deformation; DInSAR; PCIAS
INDEX KEYWORDS: 3-D (three-dimensional); 3-D displacement; Coseismic deformation; D-inSAR; Data sets; Differential interferometric synthetic aperture radars; Displacement maps; Fault system; Horizontal displacements; Image analysis systems; Kriging; Land surface; Line of Sight; Longmenshan fault zone; Missing data; Offset method; PCIAS; Phase correlation; SAR Images; Strike-slip motion; Sub pixels; Surface displacement; Three-dimensional surface; Vertical displacements; Wenchuan Earthquake; Deformation; Earthquakes; Faulting; Geodetic satellites; Geology; Interpolation; Remote sensing; Surface measurement; Synthetic aperture radar; Three dimensional computer graphics; Three dimensional
REFERENCES: Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Hubbard, Judith A., Uplift of the Longmen Shan and Tibetan plateau, and the 2008 Wenchuan (M = 7.9) earthquake, Nature, 458, 7235, pp. 194-197, (2009); 
Massonnet, Didier, Radar interferometry and its application to changes in the earth's surface, Reviews of Geophysics, 36, 4, pp. 441-500, (1998); 
Zebker, Howard A., On the derivation of coseismic displacement fields using differential radar interferometry: the Landers earthquake, Journal of Geophysical Research, 99, B10, pp. 19-634, (1994); 
Avouac, Jean Philippe, The 2005, Mw 7.6 Kashmir earthquake: Sub-pixel correlation of ASTER images and seismic waveforms analysis, Earth and Planetary Science Letters, 249, 3-4, pp. 514-528, (2006); 
Hu, Jun, Two-dimensional co-seismic surface displacements field of the Chi-Chi earthquake inferred from SAR image matching, Sensors, 8, 10, pp. 6484-6495, (2008); 
Wu, Mengche, Adaptive Local Kriging (ALK) to retrieve the slant range surface motion maps of Wenchuan earthquake, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1183-1186, (2011); 
Liu, Jianguo, Phase correlation pixel-to-pixel image co-registration based on optical flow and median shift propagation, International Journal of Remote Sensing, 29, 20, pp. 5943-5956, (2008); 
Proc 1st Annual Conference of Systems Engineering, (2006); 
Furuya, Masato, Fault source modeling of the 2008 Wenchuan earthquake based on ALOS/PALSAR data, Bulletin of the Seismological Society of America, 100, 5 B, pp. 2750-2766, (2010)
SPONSORS: Geoscience and Remote Sensing Society (GRS)
CONFERENCE NAME: 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
CONFERENCE DATE: 2012-07-22 through 2012-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ma, J., Qin, S.
AUTHOR FULL NAMES: Ma, Jianwen (7406200149); Qin, Sixian (55510564500)
7406200149; 55510564500
Automatic depicting algorithm of earthquake collapsed buildings with airborne high resolution image
(2012) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6351400, pp. 939 - 942, Cited 20 times.
DOI: 10.1109/IGARSS.2012.6351400
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873115827&doi=10.1109%2FIGARSS.2012.6351400&partnerID=40&md5=0beb2179a1ff56e8a32562852048caca

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Obtaining first-hand data and immediate information of collapsed buildings in the disaster region is exceedingly important for disaster rescue decision-making, especially when the weather is quite bad. In this work, a novel automatic depicting algorithm of earthquake collapsed buildings is proposed. This algorithm is developed based on the full understanding of the mechanisms between building's morphology in high-resolution images and the electromagnetic response of pixels in the image. Compared to the traditional depicting algorithm, this novel algorithm can depict collapsed buildings using only image after earthquake rather than images both before and after the earthquake. This algorithm has been successfully used in the Wenchuan Earthquake in 2008 and Yushu Earthquake in 2010 in China. © 2012 IEEE.
AUTHOR KEYWORDS: automatic depicting algorithm; earthquake collapsed buildings; high-resolution remote sensing image; morphological information
INDEX KEYWORDS: Collapsed buildings; Disaster rescue; Electromagnetic response; High resolution image; High resolution remote sensing; Morphological information; Novel algorithm; Wenchuan Earthquake; Algorithms; Buildings; Geology; Image reconstruction; Remote sensing; Earthquakes
REFERENCES: Guo, Huadong, An improved automatic detection method for earthquake-collapsed buildings from ADS40 image, Chinese Science Bulletin, 54, 18, pp. 3303-3307, (2009); 
Li, Zuchuan, An improved classification method for hyperspectral data based on spectral and morphological information, International Journal of Remote Sensing, 32, 10, pp. 2919-2929, (2011); 
Pesaresi, Martino, A new approach for the morphological segmentation of high-resolution satellite imagery, IEEE Transactions on Geoscience and Remote Sensing, 39, 2, pp. 309-320, (2001); 
Soille, Pierre J., Advances in mathematical morphology applied to geoscience and remote sensing, IEEE Transactions on Geoscience and Remote Sensing, 40, 9, pp. 2042-2055, (2002); 
Benediktsson, Jón Atli, Classification and feature extraction for remote sensing images from urban areas based on morphological transformations, IEEE Transactions on Geoscience and Remote Sensing, 41, 9 PART I, pp. 1940-1949, (2003)
SPONSORS: Geoscience and Remote Sensing Society (GRS)
CONFERENCE NAME: 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
CONFERENCE DATE: 2012-07-22 through 2012-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zheng, S., Cao, C., Li, G., Lu, S., Xu, M., Jia, H., Li, L.
AUTHOR FULL NAMES: Zheng, Sheng (55271598400); Cao, Chunxiang (14031191400); Li, Guanghe (55278306300); Lu, Shilei (55576433200); Xu, Min (57734835000); Jia, Huicong (23469549900); Li, Lin (57189531507)
55271598400; 14031191400; 55278306300; 55576433200; 57734835000; 23469549900; 57189531507
Incidence prediction of communicable diseases after the Wenchuan earthquake using remote sensing
(2012) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6351404, pp. 927 - 930, Cited 2 times.
DOI: 10.1109/IGARSS.2012.6351404
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873109288&doi=10.1109%2FIGARSS.2012.6351404&partnerID=40&md5=16b2109505528fbb556aa36dbb0ec007

AFFILIATIONS: Beijing Normal University, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Department of Industrial Design, Beijing University of Technology, Beijing, China; Department of Development Planning and Assets Management, State Forestry Administration, Beijing, China; College of Information and Electrical Engineering, China Agricultural University, Beijing, China
ABSTRACT: Wenchuan in Sichuan Province, China, was hit by an 8.0 magnitude earthquake on 12 May 2008. Thousands of buildings were destroyed and thousands of people were hurt. History tells us that after earthquakes, floods and other natural disaster, infectious diseases often outbreaks. In this study, with the help of spatial information technologies including remote sensing and geography information system, we acquired environmental factors including population, earthquake intensity, route distance, direct distance, Normalized Difference Vegetation Index, Normalized Difference Water Index, and Digital Elevation Model for each township in Anxian after earthquake. Then we constructed a Back Propagation Neural Network to train environmental factors and incidence of communicable diseases, and predicted the incidence of communicable diseases. The results showed that incidence of communicable diseases after earthquake could be predicted using remote sensing to some extent. © 2012 IEEE.
AUTHOR KEYWORDS: Back Propagation Neural Network; communicable diseases; remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Back propagation neural networks; Communicable disease; Digital elevation model; Earthquake intensity; Environmental factors; Geography information systems; Infectious disease; Natural disasters; Normalized difference vegetation index; Normalized difference water index; Sichuan province; Wenchuan Earthquake; Diseases; Geology; Information technology; Neural networks; Remote sensing; Vegetation; Earthquakes
REFERENCES: Karmakar, Somenath, Post-earthquake outbreak of rotavirus gastroenteritis in Kashmir (India): An epidemiological analysis, Public Health, 122, 10, pp. 981-989, (2008); 
Chinese Journal of Epidemiology, (2001); 
Chunxiang, Cao, Epidemic risk analysis after the Wenchuan Earthquake using remote sensing, International Journal of Remote Sensing, 31, 13, pp. 3631-3642, (2010); 
Cao, Chunxiang, Risk analysis for the highly pathogenic avian influenza in Mainland China using meta-modeling, Chinese Science Bulletin, 55, 36, pp. 4168-4178, (2010); 
Chang, Chaoyi, The novel H1N1 Influenza A global airline transmission and early warning without travel containments, Chinese Science Bulletin, 55, 26, pp. 3030-3036, (2010); 
Zheng, Sheng, Application of CCD data of HJ-1 satellite in PM10 evaluation in Shenzhen, China, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3312-3315, (2011); 
Chinese Journal of Vector Biology and Control, (2010); 
Haijiang, Liu, Monitoring sandy desertification of Otindag Sandy Land based on multi-date remote sensing images, Acta Ecologica Sinica, 28, 2, pp. 627-635, (2008); 
Journal of Sun Yat Sen University Medical Sciences, (2008); 
Rocha, J. L., Disaster mitigation and preparedness on the Nicaraguan post-Mitch agenda, Disasters, 25, 3, pp. 240-250, (2001)
SPONSORS: Geoscience and Remote Sensing Society (GRS)
CONFERENCE NAME: 2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
CONFERENCE DATE: 2012-07-22 through 2012-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Bai, S.B., Wang, J., Zhang, Z.-G., Cheng, C.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Wang, Jian (55491249300); Zhang, Zhigang (59643629200); Cheng, Chen (55662217700)
15830966700; 55491249300; 59643629200; 55662217700
Combined landslide susceptibility mapping after Wenchuan earthquake at the Zhouqu segment in the Bailongjiang Basin, China
(2012) Catena, 99, pp. 18 - 25, Cited 98 times.
DOI: 10.1016/j.catena.2012.06.012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864419498&doi=10.1016%2Fj.catena.2012.06.012&partnerID=40&md5=2a3f0ca08f9e4b6c5927ea942a0c7086

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China
ABSTRACT: In this study, two separate landslide susceptibility maps using multi-temporal landslide and Wenchuan earthquake triggered landslide datasets were carried out based on GIS and logistic regression model at Zhouqu segment in the Bailongjiang Basin in North-western China. This region has already been strongly affected by landslides for a long time, and numerous additional slope failures were triggered by the 2008 Wenchuan earthquake. The data used for this study consists of two landslide inventories, of which the first lists historical landslides and the latter contains only slope failures attributed to the 2008 earthquake. Additional data sources include landslide causative factor such as a digital elevation model (DEM) with a 30×30m 2 resolution, orthophotos, geological and land-use maps, precipitation records and information on peak ground acceleration data from the 2008 earthquake. The comparison of the two computed maps shows that susceptibility classes are consistent for over 58% of study area. Changes of one or more classes were observed for approximately 36% and 6%, respectively. Finally, both susceptibility maps were combined to describe the maximum likelihood of landslide occurrences. The overall high prediction rates of the calculated susceptibility maps make them an ideal basis for the use within regional spatial planning as well as for the organization of emergency actions by local authorities. © 2012 Elsevier B.V.
AUTHOR KEYWORDS: China; Landslide susceptibility; Multi-temporal landslides; Wenchuan earthquake; Zhouqu to Wudu segment
INDEX KEYWORDS: comparative study; digital elevation model; earthquake trigger; GIS; landslide; peak acceleration; regression analysis; Sichuan earthquake 2008; slope failure; Bailong Basin; China; Gansu; Zhouqu
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Ayalew, Lulseged, Landslides in Sado Island of Japan: Part II. GIS-based susceptibility mapping with comparisons of results from two methods and verifications, Engineering Geology, 81, 4, pp. 432-445, (2005); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Environ Earth Sci, (2011); 
Beguería, Santiago, Validation and evaluation of predictive models in hazard assessment and risk management, Natural Hazards, 37, 3, pp. 315-329, (2006); 
Proceedings of 4th International Symposium on Landslides, (1984); 
Çan, Tolga, Susceptibility assessments of shallow earthflows triggered by heavy rainfall at three catchments by logistic regression analyses, Geomorphology, 72, 1-4, pp. 250-271, (2005); 
Edited by General Monitoring Station of Geological Environment of Gansu Province, (2003); 
Engineering Geological Problems Study of Gansu Section of Lanzhou Haikou Highway, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chai, F.-X., Sun, T., Li, X.-T., Huang, S.-F.
AUTHOR FULL NAMES: Chai, Fuxin (17342072600); Sun, Tao (59440231100); Li, Xiaotao (57221402784); Huang, Shifeng (57741250100)
17342072600; 59440231100; 57221402784; 57741250100
Development and application of spatial analysis and management system of dammed lake based on 3D GIS
(2012) Applied Mechanics and Materials, 204-208, pp. 2932 - 2936, Cited 0 times.
DOI: 10.4028/www.scientific.net/AMM.204-208.2932
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84869788538&doi=10.4028%2Fwww.scientific.net%2FAMM.204-208.2932&partnerID=40&md5=0ccf78fb6632d75b9b04f6e13f6e02b3

AFFILIATIONS: Remote Sensing Technology Application Research Center of IWHR, Beijing, China
ABSTRACT: Using Skyline and GIS technology, true three-dimensional scene of the Wenchuan earthquake is built in the area affected by the "5.12" earthquake in Sichuan is. And then the system development and model structures are done by the application development software of Visual Studio 2005. The decision analysis platform is built including the functions of the dynamic monitoring based on remote sensing for dammed lake, the lake recognition and feature extraction for dammed lake (rapid identification, the calculation of barrier dam, storage capacity calculation), submergence analysis (upstream submerged analysis, downstream image evaluation), and the function of disaster assessment and risk assessment. It can provide support for the Monitoring, and Early-Warning and aid decision-making for dammed lake. © (2012) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: Dammed lake /quake lake; GIS; Tang jiashan; Three-dimension
INDEX KEYWORDS: Application development; Barrier dam; Dynamic monitoring; Early warning; GIS technology; Image evaluation; Management systems; Rapid identification; Sichuan; Spatial analysis; Storage capacity; System development; Tang jiashan; Three-dimension; Three-dimensional scenes; Visual studios; Wenchuan Earthquake; Civil engineering; Decision making; Earthquakes; Feature extraction; Fluid mechanics; Geographic information systems; Model structures; Remote sensing; Risk assessment; Shore protection; Lakes
REFERENCES: Cui, Peng, Distribution and risk analysis of dammed lakes reduced by Wenchuan earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 35-42, (2009); 
McCarthy, James D., A GIS-based borehole data management and 3D visualization system, Computers and Geosciences, 32, 10, pp. 1699-1708, (2006); 
China Institute of Water Resources and Hydropower Research, (2011)
CONFERENCE NAME: 2012 International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2012
CONFERENCE DATE: 2012-08-10 through 2012-08-12
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ding, M., Jin, Z., Tian, Z., Duan, X., Zhao, W., Yang, L.J.
AUTHOR FULL NAMES: Ding, Mingtao (24314842800); Jin, Zi (8976193500); Tian, Zheng (7202984846); Duan, Xifa (36604262900); Zhao, Wei (55574199499); Yang, Lijuan (55732989700)
24314842800; 8976193500; 7202984846; 36604262900; 55574199499; 55732989700
Object registration for remote sensing images using robust kernel pattern vectors
(2012) Science China Information Sciences, 55 (11), pp. 2611 - 2623, Cited 7 times.
DOI: 10.1007/s11432-011-4478-2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867889442&doi=10.1007%2Fs11432-011-4478-2&partnerID=40&md5=89bee6b96c849f309ad12463c49a9da6

AFFILIATIONS: Department of Applied Mathematics, Northwestern Polytechnical University, Xi'an, Shaanxi, China; Department of Statistics, The University of British Columbia, Vancouver, BC, Canada; Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The registration of multitemperal remote sensing images before and after a disaster is a challenging problem. The main reason is that there is a dearth of homologous features that can be used as tie points for registration of variform objects. This paper proposes a new registration method based on robust kernel pattern vector (KPV) for water objects in the remote sensing images, which have complex deformation before and after a disaster. We show how the variform objects can be precisely registered using their robust kernel pattern vectors (RKPVs). The contribution can be divided into three parts. First, a novel shape descriptor, named as kernel pattern vector (KPV), is defined. Second, a robust kernel principal component analysis (RKPCA) method is proposed, which can not only capture the common pattern of the variform objects but can also act as the Criterion for outlier detection. Finally, a registration approach is derived based on the implicit RKPVs. We demonstrate the power of the proposed approach by comparing it with other existing methods using two real cases: one for lake monitoring in the Jiayu region, and the other for damage mapping of earthquake-induced barrier lake at Tangjiashan (2008 Wenchuan Earthquake). The results show that the method is effective in capturing the common structural pattern of the variform objects before and after a disaster. © 2012 Science China Press and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: effective; object registration; outlier data; remote sensing image; robust kernel pattern vectors (RKPVs); variform object
REFERENCES: Abadpour, Arash, Fast registration of remotely sensed images for earthquake damage estimation, Eurasip Journal on Applied Signal Processing, 2006, (2006); 
Foody, Giles M., Status of land cover classification accuracy assessment, Remote Sensing of Environment, 80, 1, pp. 185-201, (2002); 
Image Analysis Classification and Change Detection in Remote Sensing, (2006); 
Principles of Visual Information Retrieval, (2001); 
Li, Hui, A Contour-Based Approach to Multisensor Image Registration, IEEE Transactions on Image Processing, 4, 3, pp. 320-334, (1995); 
Dai, Xiaolong, A feature-based image registration algorithm using improved chain-code representation combined with invariant moments, IEEE Transactions on Geoscience and Remote Sensing, 37, 5 II, pp. 2351-2362, (1999); 
Habib, Ayman Fawzy, Semi-automatic registration of multi-source satellite imagery with varying geometric resolutions, Photogrammetric Engineering and Remote Sensing, 71, 3, pp. 325-332, (2005); 
Proceeding of Urban Remote Sensing Event 2009 Joint, (2009); 
Cui, Ming, A new image registration scheme based on curvature scale space curve matching, Visual Computer, 23, 8, pp. 607-618, (2007); 
Huang, Lei, Feature-based image registration using the shape context, International Journal of Remote Sensing, 31, 8, pp. 2169-2177, (2010)
PUBLISHER: Science in China Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, W., Zheng, Z., Zhao, W.
AUTHOR FULL NAMES: Yang, Wei (55376739500); Zheng, Zhong (56041902200); Zhao, Wenji (12787367300)
55376739500; 56041902200; 12787367300
A hazard assessment of secondary disasters after earthquake in Wenchuan
(2012), art. no. 6270342, Cited 2 times.
DOI: 10.1109/Geoinformatics.2012.6270342
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867134059&doi=10.1109%2FGeoinformatics.2012.6270342&partnerID=40&md5=11df237e5439528765887b222eeefa47

AFFILIATIONS: State Key Laboratory Incubation Base of Urban Environmental Processes and Digital Simulation, Capital Normal University, Beijing, Beijing, China; Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences, Lanzhou, Gansu, China
ABSTRACT: Wenchuan Earthquake triggered a lot of secondary disasters including landslide, collapse and mud-rock flow which have brought enormous difficulties on traffic, communications, and hydropower projects. As aftershocks will be last for a long time, the risk assessment of secondary disasters plays an important role for disaster prevention and mitigation. The remote sensing images of China-Brazil Earth Resource Satellite (CBERS) with geological map, soil map and chart of vegetation coverage were used to distinguish the potential dangerous regions in Wenchuan County and assess the risk degree of secondary disasters. The results show that high possibility risk areas are located in the tall mountains and river valley from northeast to southeast around Yingxiu, Weizhou, Miansi, Yinxing, Gengda and Xuankou Town. © 2012 IEEE.
AUTHOR KEYWORDS: analytical hierarchy process; expert scoring method; secondary disasters; Wenchuan earthquake
INDEX KEYWORDS: Analytical Hierarchy Process; Geological map; Hazard Assessment; Hydropower projects; Mud-rock flow; Remote sensing images; Resource satellite; Risk areas; Risk degree; River valley; Scoring methods; Soil maps; Vegetation coverage; Wenchuan Earthquake; Disaster prevention; Earthquakes; Image reconstruction; Risk assessment; Disasters
REFERENCES: South China Journal of Seismology, (2003); 
Ohlmacher, Gregory C., Using multiple logistic regression and GIS technology to predict landslide hazard in northeast Kansas, USA, Engineering Geology, 69, 3-4, pp. 331-343, (2003); 
Xu, Chong, GIS-based landslide susceptibility assessment using analytical hierarchy process in wenchuan earthquake region, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, SUPPL. 2, pp. 3978-3985, (2009); 
Journal of Catastrophology, (2004); 
Journal of Catastrophology, (2000); 
Journal of Catastrophology, (2009); 
Wang, Wei, Application of 3-D GIS to monitoring and forecast system of landslide hazard, Yantu Lixue/Rock and Soil Mechanics, 30, 11, pp. 3379-3385, (2009); 
Shanxi Architecture, (2009); 
Yao, Xin, Contribution of strata lithology and slope gradient to landslides triggered by Wenchuan Ms 8 earthquake, Sichuan, Geological Bulletin of China, 28, 8, pp. 1156-1162, (2009); 
Journal of Jiangxi University of Science and Technology, (2009)
SPONSORS: IEEE Geoscience and Remote Sensing Society (GRSS), Chin. Acad. Sci., State Key Lab. Resour. Environ. Inf. Syst., Wuhan Univ., State Key Lab. Inf. Eng. Surv. Mapp. Remote Sens., Chin. Acad. Sci., Cent. Earth Obs. Digit. Earth, Beijing Normal Univ., Coll. Global Change Earth Syst. Sci.
CONFERENCE NAME: 2012 20th International Conference on Geoinformatics, Geoinformatics 2012
CONFERENCE DATE: 2012-06-15 through 2012-06-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhu, J., Zhou, Y., Wang, S., Wu, F., Wang, F., Yan, F., Wang, L.
AUTHOR FULL NAMES: Zhu, Jinfeng (56599221000); Zhou, Yi (25654258200); Wang, Shixin (8937210400); Wu, Fayun (59871611500); Wang, Futao (56415234000); Yan, Fuli (7202884463); Wang, Litao (57875737000)
56599221000; 25654258200; 8937210400; 59871611500; 56415234000; 7202884463; 57875737000
Monitoring the vegetation deterioration and recovery of serious disaster area in Wenchuan Earthquake based on remote sensing
(2012) Disaster Advances, 5 (4), pp. 1172 - 1178, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873113188&partnerID=40&md5=fbe6c660effe11b81f29cace689fe454

AFFILIATIONS: State Key Laboratory of Remote Sensing Sciences, Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Academy of Forest Inventory and Planning, State Forestry Administration, Beijing, China
ABSTRACT: The devastating Wenchuan Earthquake with a magnitude of 8.0 occurred in Sichuan Province, Southwest China, on May 12, 2008, which had seriously interfered with the ecosystem in the disaster regions, resulting in large areas of vegetation deterioration and soil erosion. This study monitored the vegetation deterioration and recovery in three serious disaster regions, which were Wenchuan Count, Yingxiu Town and Zipingpu Reservoir separately, by using NDVI-based quantitative indexes coupled with multi-temporal Landsat/TM and EO-1/ALI images and digital elevation model (DEM). The results indicated that vegetation destruction in these regions after earthquake was very serious, and the areas of destroyed vegetation in Yingxiu Town, which as the earthquake center, had accounted for 51%. The average vegetation recovery ratio in the three regions reached 75.8%, 55.4% and 41.5% on August 28, 2011, 3 years after the earthquake under natural vegetation succession, and the vegetation recovery was still ongoing from the trend of vegetation activities. Vegetation deterioration and recovery had a close relationship with the slope that vegetation was most likely to recover in the slope between 35° to 45°. The study results provide very useful information for ecological reconstruction and recovery in the disaster areas.
AUTHOR KEYWORDS: Remote sensing; TM; Vegetation deterioration; Vegetation recovery; Wenchuan Earthquake
INDEX KEYWORDS: digital elevation model; disaster management; Landsat thematic mapper; NDVI; recovery; remote sensing; Sichuan earthquake 2008; soil erosion; vegetation; China; Sichuan; Wenchuan; Yingxiu; Zipingpu Reservoir
REFERENCES: Attiwill, Peter M., The disturbance of forest ecosystems: the ecological basis for conservative management, Forest Ecology and Management, 63, 2-3, pp. 247-300, (1994); 
Peters-Lidard, Christa D., A soil-vegetation-atmosphere transfer scheme for modeling spatially variable water and energy balance processes, Journal of Geophysical Research, 102, 4, pp. 4303-4324, (1997); 
Aspinall, Richard J., Integrated geographical assessment of environmental condition in water catchments: Linking landscape ecology, environmental modelling and GIS, Journal of Environmental Management, 59, 4, pp. 299-319, (2000); 
Zheng, Guang, Combining remote sensing imagery and forest age inventory for biomass mapping, Journal of Environmental Management, 85, 3, pp. 616-623, (2007); 
Lin, Wentzu, Eco-environmental changes assessment at the Chiufenershan landslide area caused by catastrophic earthquake in Central Taiwan, Ecological Engineering, 33, 3-4, pp. 220-232, (2008); 
Journal of Remote Sensing, (2008); 
Wang, Futao, Application and prospect of multi-spectral remote sensing in major natural disaster assessment, Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis, 31, 3, pp. 577-582, (2011); 
Lin, Wentzu, Earthquake-induced landslide hazard and vegetation recovery assessment using remotely sensed data and a neural network-based classifier: A case study in central Taiwan, Natural Hazards, 47, 3, pp. 331-347, (2008); 
Lin, Chao Yuan, Vegetation recovery and landscape change assessment at Chiufenershan landslide area caused by Chichi earthquake in central Taiwan, Natural Hazards, 53, 1, pp. 175-194, (2010); 
Wang, Futao, Investigation and assessment of seismic geologic hazard triggered by the Yushu earthquake using geo-spatial information technology, Disaster Advances, 3, 4, pp. 72-76, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Jiang, G., Wang, J., Wen, Y.
AUTHOR FULL NAMES: Xu, Caijun (57202093443); Jiang, Guoyan (37107971800); Wang, Jianjun (56031104900); Wen, Yangmao (13003619600)
57202093443; 37107971800; 56031104900; 13003619600
A seismic hazard evaluating system for active faults based on GNSS/InSAR/GIS
(2012) Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 41 (5), pp. 661 - 669, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870267070&partnerID=40&md5=d28f93dc2a4bdb9be66f2762ff4bdd61

AFFILIATIONS: School of Geodesy and Geomatics, Wuhan University, Wuhan, Hubei, China
ABSTRACT: The method to evaluate seismic hazards of active faults according to the Coulomb failure criteria using the GNSS, InSAR, gravity, leveling and other kinds of geodetic observations is illustrated in this paper. The design for the corresponding evaluating system was presented. The system uses these geodetic data to determine the crustal deformation near active faults and implement the inversion for the strain, stress and motion parameters of active faults. Then the threshold values of stress of active faults are fixed from geological and seismic data and analyze the sites, maximum magnitudes, recurrence time and probability of potential earthquakes using the evaluating models. The system exhibits, interprets, and manages the evaluating results using GIS. As a demonstration, the coseismic Coulomb stress triggered by 2008 Wenchuan earthquake, the lasting time of stress disturbing and the earthquake rate of Longmenshan area after shock are discussed.
AUTHOR KEYWORDS: A seismic hazard evaluating system; Active fault; GIS; GNSS; InSAR
INDEX KEYWORDS: Active fault; After shocks; Coulomb failure criteria; Coulomb stress; Crustal deformations; Evaluating models; Geodetic data; Geodetic observation; GNSS; InSAR; Lasting time; Motion parameters; Recurrence time; Seismic datas; Seismic hazards; System use; Wenchuan Earthquake; Faulting; Geodetic satellites; Geographic information systems; Earthquakes
REFERENCES: Acta Geodaetica Et Cartographica Sinica, (1992); 
Acta Geodaetica Et Cartographica Sinica, (1993); 
Acta Geodaetica Et Cartographica Sinica, (1994); 
Acta Geodaetica Et Cartographica Sinica, (1999); 
Acta Geodaetica Et Cartographica Sinica, (2002); 
Acta Geodaetica Et Cartographica Sinica, (1997); 
Acta Geodaetica Et Cartographica Sinica, (1996); 
Zhi-Cai, L. I., Wenchuan earthquake deformation fault inversion and analysis based on GPS observations, Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 38, 2, pp. 108-119, (2009); 
Xu, Caijun, Mw 7.9 Wenchuan earthquake slip distribution inversion from GPS measurements, Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 38, 3, pp. 195-201, (2009); 
Stipulation on Technical System for China Earthquake Active Fault Surveying, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liang, J., Tang, C., Wang, J.
AUTHOR FULL NAMES: Liang, Jingtao (35205586800); Tang, Chuan (35932953300); Wang, Jun (55486566900)
35205586800; 35932953300; 55486566900
Exploration- and analysis-remote sensing of geological hazards induced by earthquakes in typical areas of Qingchuan, Sichuan, China
(2012) Journal of Chengdu University of Technology (Science and Technology Edition), 39 (5), pp. 530 - 534, Cited 4 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84869179320&partnerID=40&md5=b3b229304084fe43f065cc318fdb915f

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Sichuan Geological Survey, Chengdu, Sichuan, China
ABSTRACT: This paper makes an approach to the distribution characteristics of the geo-hazards induced by the Wenchuan earthquake and uses the aerial photos to interpret the geo-hazards in the Hongshi river basin of Qingchuan County, Sichuan. It is found that there are 712 geo-hazards in the area of 193 km 2, including 209 landslides, 486 rock falls, and 17 debris flows. The density of the geo-hazards amount to 3.7 km-2. Compared with the geo-hazards before the earthquake, the distribution of the earthquake-induced geo-hazards has obvious hanging wall footwall effects, topography effects, disaster-chain effects, and high density characteristics.
AUTHOR KEYWORDS: Aerial remote-sensing; Geo-hazard; Qingchuan; Wenchuan earthquake
INDEX KEYWORDS: aerial survey; debris flow; exploration; landslide; remote sensing; seismic hazard; Sichuan earthquake 2008; China; Qingchuan; Sichuan
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhai, Y., Zhao, Q., Wang, S.
AUTHOR FULL NAMES: Zhai, Yongmei (42361750700); Zhao, Qi (55743336100); Wang, Sen (36740549300)
42361750700; 55743336100; 36740549300
Study on the application of high resolution remote sensing image in fast earthquake damage assessment: A method based on the segmentation of the differences in regions
(2012), art. no. 6260752, Cited 1 times.
DOI: 10.1109/RSETE.2012.6260752
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866676214&doi=10.1109%2FRSETE.2012.6260752&partnerID=40&md5=b748d72656ce71176e664c2344f7ecab

AFFILIATIONS: Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai, China; Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai, China; Shum Yip Southern Land (Holdings) Co., Ltd., Qingshuihe, Shenzhen, China
ABSTRACT: The extraction method based on difference of collapsed buildings is improved with the characteristics of region in high resolution remote sensing images; multi-threshold segmentation, category filtration and mathematical morphology are introduced into the post-process and a method based on the segmentation of the differences of regions is proposed, which is successfully applied in the extraction of intact buildings. This new improved method is used to assess the calculation accuracy of an example of a block destroyed in Wenchuan earthquake, and is compared with the object-oriented method and visual interpretation method; the result shows this improved method is simpler, faster, more accurate and adaptable. © 2012 IEEE.
AUTHOR KEYWORDS: Change detection; Earthquake damage assessment; Mathematical morphology; Segmentation of the differences
INDEX KEYWORDS: Calculation accuracy; Change detection; Collapsed buildings; Earthquake damages; Extraction method; High resolution remote sensing images; Multi-threshold segmentation; Object oriented method; Post process; Visual interpretation; Wenchuan Earthquake; Civil engineering; Earthquakes; Image reconstruction; Mathematical morphology; Remote sensing; Damage detection
REFERENCES: Study on the Change Detection Technology Besed on Earthquake Damage Remote Sensing Images, (2003); 
Earthquake Research, (2010); 
Process of Remote Sensing Images with Envi, (2007); 
Journal of Remote Sensing, (2003); 
Journal of Remote Sensing, (2008); 
Journal of Natural Disasters, (2002); 
Study on the Application of Rs Images in the Fast Earthquake Damage Assessment, (2003); 
Remote Sensing for Land Resources, (2019); 
Digital Images Process, (1998); 
Digital Change Detection in Remotely Sensed Imagery Using Fuzzy Set Theory, (1998)
SPONSORS: Computer Society of Jiangsu Province, IEEE, City University of Hong Kong, Nanjing University of Science and Technology, Peking University
CONFERENCE NAME: 2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2012
CONFERENCE DATE: 2012-06-01 through 2012-06-03
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, Y., Chen, G., Tang, C., Zhou, G., Zheng, L.
AUTHOR FULL NAMES: Li, Yange (55339639500); Chen, Guangqi (55577206900); Tang, Chuan (35932953300); Zhou, G. (57199877714); Zheng, Lu (55273034500)
55339639500; 55577206900; 35932953300; 57199877714; 55273034500
Rainfall and earthquake-induced landslide susceptibility assessment using GIS and Artificial Neural Network
(2012) Natural Hazards and Earth System Sciences, 12 (8), pp. 2719 - 2729, Cited 57 times.
DOI: 10.5194/nhess-12-2719-2012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866312529&doi=10.5194%2Fnhess-12-2719-2012&partnerID=40&md5=cb2946019c3ecdce54f237ede7de7953

AFFILIATIONS: Department of Civil and Structural Engineering, Kyushu University, Fukuoka, Fukuoka, Japan; State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China; Nippon Institute of Technology, Minami-saitama District, Saitama, Japan
ABSTRACT: A GIS-based method for the assessment of landslide susceptibility in a selected area of Qingchuan County in China is proposed by using the back-propagation Artificial Neural Network model (ANN). Landslide inventory was derived from field investigation and aerial photo interpretation. 473 landslides occurred before the Wenchuan earthquake (which were thought as rainfall-induced landslides (RIL) in this study), and 885 earthquake-induced landslides (EIL) were recorded into the landslide inventory map. To understand the different impacts of rainfall and earthquake on landslide occurrence, we first compared the variations between landslide spatial distribution and conditioning factors. Then, we compared the weight variation of each conditioning factor derived by adjusting ANN structure and factors combination respectively. Last, the weight of each factor derived from the best prediction model was applied to the entire study area to produce landslide susceptibility maps. Results show that slope gradient has the highest weight for landslide susceptibility mapping for both RIL and EIL. The RIL model built with four different factors (slope gradient, elevation, slope height and distance to the stream) shows the best success rate of 93 %; the EIL model built with five different factors (slope gradient, elevation, slope height, distance to the stream and distance to the fault) has the best success rate of 98 %. Furthermore, the EIL data was used to verify the RIL model and the success rate is 92 %; the RIL data was used to verify the EIL model and the success rate is 53 %. © 2012 Author(s). CC Attribution 3.0 License.
INDEX KEYWORDS: aerial photograph; artificial neural network; back propagation; data interpretation; earthquake mechanism; geological mapping; GIS; landslide; rainfall; slope dynamics; slope stability; spatial distribution; China; Qingchuan; Sichuan
REFERENCES: Ayalew, Lulseged, The spatial correlation between earthquakes and landslides in Hokkaido (Japan), a GIS-based analysis of the past and the future, Landslides, 8, 4, pp. 433-448, (2011); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Çan, Tolga, Susceptibility assessments of shallow earthflows triggered by heavy rainfall at three catchments by logistic regression analyses, Geomorphology, 72, 1-4, pp. 250-271, (2005); 
Geographical Information Systems in Assessing Natural Hazards, (1995); 
Chang, Kangtsung, Modeling typhoon- and earthquake-induced landslides in a mountainous watershed using logistic regression, Geomorphology, 89, 3-4, pp. 335-347, (2007); 
Chung, Chungjo F., Probabilistic prediction models for landslide hazard mapping, Photogrammetric Engineering and Remote Sensing, 65, 12, pp. 1389-1399, (1999); 
Conoscenti, Christian, GIS analysis to assess landslide susceptibility in a fluvial basin of NW Sicily (Italy), Geomorphology, 94, 3-4, pp. 325-339, (2008); 
Michael J. Crozier, Michael J., Multiple-occurrence regional landslide events in New Zealand: Hazard management issues, Landslides, 2, 4, pp. 247-256, (2005); 
Dahal, Ranjan Kumar, Representative rainfall thresholds for landslides in the Nepal Himalaya, Geomorphology, 100, 3-4, pp. 429-443, (2008); 
Dai, Fuchu, Landslide characteristics and slope instability modeling using GIS, Lantau Island, Hong Kong, Geomorphology, 42, 3-4, pp. 213-228, (2002)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Huang, X.-M.
AUTHOR FULL NAMES: Huang, Xiuming (7410245161)
7410245161
The method of latent development level of earthquake-pregnant structures and the analysis of relevant seismogeological information
(2012) Dizhen Dizhi, 34 (3), pp. 500 - 515, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2012.03.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868645536&doi=10.3969%2Fj.issn.0253-4967.2012.03.011&partnerID=40&md5=dcf5cfc4ef543364e98ad3d0ca945b06

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The approach of latent development level of earthquake-pregnant structures in the crustal movement(LDLEPS) is a seismogeologic dynamic indicator for evaluating seismic risk quantitatively, developed based on the net deformation ratio using GIS techniques. The following concerns are addressed in this paper, including the working principle and applying conditions for LDLEPS, the drawing of LDLEPS maps, the relationship between the distribution characteristic of LDLEPS and earthquake in the North China region, and the seismogeologic analysis of the LDLEPS anomaly areas in North China. An example is presented of the use in forecasting earthquakes with LDLEPS method, and more discussions are made on the origin of formation of LDLEPS. Contrasting the spatial distribution of LDLEPS with earthquakes of 1966-1998 in the North China region in Fig 1, we found that they match and correspond completely to each other in terms of lineament, location, and size. This demonstrates that the LDLEPS method can be used in quantitative evaluation of seismic risk. To verify this conclusion, we drawn the LDLEPS maps of Sichuan and Qinghai regions and used them to forecast experimentally the earthquake trend in these regions in 2006, and the afterward outcomes have proved that the forecast is basically correct, as shown in Fig. 2 and 3. As a consequence, the 2008 M8 Wenchuan earthquake in Sichuan Province and the 2010 M7.1 Yushu earthquake in Qinghai Province just happened in the expected abnormal LDLEPS regions and times, respectively. Formation mechanism of earthquake-pregnant structures is discussed in detail in the paper. According to the geophysical exploration and seismogeologic survey data, a bilayer-structured earthquake-generation model is proposed, derived from the crustal thermal processes and tectonic reworking resulting from the late-stage evolution of sub-mantle plumes and mantle-branch structures in North China, i.e. the semi-plastic rheologic layer or lower layer in the middle crust and the rigid layer or upper layer in the upper crust, and that the dynamic of the lower layer induces the formation and development of the seismogenic structures in the upper layer, causing tectonic deformation and generating earthquakes. Based on LDLEPS maps, we divide the North China region into 6 seismogenic structure anomaly zones, as shown in Fig. 1. Of them, the anomalous seismogenic structure zone B, located in the northwestern Beijing, is rich in geothermal resources, where hot fluids upwell into the fault planes of the upper layer from the lower rheologic layer, reactivating the faults and generating the moderate and lower-magnitude earthquakes, with a causative mechanism similar to that of reservoir-induced earthquake. In the anomaly zone A of seismogenic structures(Bohai Sea area and its margins), the powerful driving force from the lower rheologic layer controls directly the generation and development of the upper seismogenic structures, producing moderate and lower-size earthquakes. Researches on palaeoseismic traces from trench profiles and seismites in marine sediments reveal that there are many strong seismic events with magnitude ≥6 and palaeotsunami events in this region in the prehistoric times. The nowadays high level of LDLEPS and strong earthquake events are the continuation and repetition of their past activities. It is also noted that there are obvious differences in structural landforms and earthquake trends between the South and North China blocks owing to difference of their tectonic background. Having the advantage of novelty, uniqueness, visibility, operability, effectiveness and computerization, the LDLEPS method can be widely applied to areas of earth science research, earthquake prediction and engineering.
AUTHOR KEYWORDS: Crustal movement; GIS; Latent development level of earthquake-pregnant structure(LDLEPS); Paleoseismology; Seismic risk
INDEX KEYWORDS: crustal movement; earthquake engineering; earthquake prediction; formation mechanism; GIS; map; paleoseismicity; prehistoric; risk assessment; seismology; spatial distribution; China
REFERENCES: Chen, Shiyue, Discovery and significance of earthquake event deposits of early tertiary in the Jiyang Depression, Scientia Geologica Sinica, 38, 3, pp. 377-384, (2003); 
Translated Works on Seismogeology, (1979); 
Seismology and Geology, (1988); 
Researches and Applications of Modern Earth S Dynamics, (1994); 
Huang Xiuming, The indicator system of net deformation ratio (NDR) of crustal movement and seismic event, Dizhen Dizhi, 18, 4, pp. 427-435, (1996); 
Bulletin of Mineralogy Petrology and Geochemistry, (1998); 
Mantle Plume Structure, (2017); 
Digital Geography Information System Construction and Advanced Application of Mapinfo, (2003); 
Multiple Evolution of Mantle Plume and Its Mineralization, (2001); 
Information of Geology and Mineral Resources in Hebei Province, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, X., Zhang, H., Li, J., Wei, Y., Ma, Q.
AUTHOR FULL NAMES: Jin, Xing (36681350800); Zhang, Hongcai (55438249600); Li, Jun (37055859000); Wei, Yongxiang (23978816600); Ma, Qiang (57193777284)
36681350800; 55438249600; 37055859000; 23978816600; 57193777284
Research on earthquake early warning magnitude estimate
(2012) Acta Seismologica Sinica, 34 (5), pp. 593 - 610, Cited 28 times.
DOI: 10.3969/j.issn.0253-3782.2012.05.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867940241&doi=10.3969%2Fj.issn.0253-3782.2012.05.002&partnerID=40&md5=fa109d2f0cde4fc505a9e13da7af1b3a

AFFILIATIONS: Earthquake Administration of Fujian Province, Fuzhou, Fujian, China; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: Earthquake early warning (EEW) is one of the effective ways to reduce earthquake damage. Earthquake magnitude estimation is the most important and also most difficult part in the whole EEW system. Based on 142 earthquake records from KiK-net in Japan and aftershock records of the great Wenchuan earthquake in Sichuan, China, we worked out the magnitude estimation relationships by using τ <inf>c</inf> and P <inf>d</inf> methods, with corresponding variances of 0.62 and 0.56, respectively. In order to remove the effect of magnitude saturation, we expanded the P <inf>d</inf> method and proposed a new method of continuously calculating the peak displacement. When the time window is 10 s, the variance of magnitude estimation is reduced to 0.37, fully meeting the need of EEW systems. Meanwhile, our method realized the continuous transition of different information, and improved the utilization of seismic records. We also discussed the relation between P <inf>d</inf> and PGV, and the compatibility between different characteristic parameters.
AUTHOR KEYWORDS: τ c method; Earthquake early warning; Earthquake magnitude; P d method
INDEX KEYWORDS: aftershock; early warning system; earthquake; earthquake magnitude; seismology
REFERENCES: undefined, (2003); 
undefined, (2003); 
undefined, (2008); 
undefined, (2012); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
J Geophys Res, (2007); 
Ellsworth, William L., Seismic evidence for an earthquake nucleation phase, Science, 268, 5212, pp. 851-855, (1995); 
Sensors, (1994); 
Erdik, Mustafa O., Istanbul earthquake rapid response and the early warning system, Bulletin of Earthquake Engineering, 1, 1, pp. 157-163, (2003); 
Hsiao, Naichi, Development of earthquake early warning system in Taiwan, Geophysical Research Letters, 36, 5, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lu, T., Zeng, H., Luo, Y., Wang, Q., Shi, F., Sun, G., Wu, Y., Wu, N.
AUTHOR FULL NAMES: Lu, Tao (56406648100); Zeng, Hongcheng (59777259500); Luo, Yan (57199124360); Wang, Qian (58444309000); Shi, Fusun (15124549800); Sun, Geng (35327986200); Wu, Yan (56165395200); Wu, Ning (36956501500)
56406648100; 59777259500; 57199124360; 58444309000; 15124549800; 35327986200; 56165395200; 36956501500
Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: A case study in Mao County
(2012) Ecological Research, 27 (5), pp. 955 - 966, Cited 39 times.
DOI: 10.1007/s11284-012-0976-y
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866542084&doi=10.1007%2Fs11284-012-0976-y&partnerID=40&md5=c7f31d3942b0a5ec609fb70147d84c23

AFFILIATIONS: Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology Chinese Academy of Sciences, Chengdu, Sichuan, China; Faculty of Forestry, University of Toronto, Toronto, ON, Canada; International Centre for Integrated Mountain Development Nepal, Kathmandu, Nepal
ABSTRACT: The Wenchuan earthquake (Richter scale 8) on 12 May 2008 in southwestern China caused widespread ecosystem damage in the Longmenshan area. It is important to evaluate natural vegetation recovery processes and provide basic information on ecological aspects of the recovering environment after the earthquake. To circumvent the weather limits of remote sensing in the Wenchuan earthquake-hit areas, and to meet the need for regional observation analyses, three Landsat TM images pre- and post-earthquake in Mao County were used for analysis. Post-earthquake normalized difference vegetation index (NDVI) values were compared to pre-earthquake values with an NDVI-based index differencing method to determine the extent to which the vegetation was damaged in relation to the pre-earthquake pattern, and the rate of recovery was evaluated. The spatial characteristics of vegetation loss and natural recovery patterns were analyzed in relation to elevation, slope and aspect. The results indicated that severely damaged sites occurred mainly in river valleys, within a range of 1,500-2,500 m elevation and on slopes of 25-55°. The distance from rivers, rather than the distance from active faults, controls the damage patterns. After 1 year of natural regeneration, 36 % of the destroyed areas showed a decrease in NDVI value, 28. 8 % showed very little change, 19. 1 % showed an increase, and 16. 1 % also increased with a recovery rate greater than 100 %. Moreover, there is a good correlation between recovery rate and both slope and elevation, but recovery patterns in the damaged area are complicated. Our results indicate that natural recovery in this arid valley is a slow process. © 2012 The Ecological Society of Japan.
AUTHOR KEYWORDS: Landsat image; Vegetation damage; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: active fault; arid environment; disturbance; earthquake damage; ecological impact; Landsat; monitoring; NDVI; regeneration; remote sensing; Sichuan earthquake 2008; time series; China; Mao; Sichuan
REFERENCES: Allen, Robert B., Immediate damage by an earthquake to a temperate montane forest, Ecology, 80, 2, pp. 708-714, (1999); 
Attiwill, Peter M., The disturbance of forest ecosystems: the ecological basis for conservative management, Forest Ecology and Management, 63, 2-3, pp. 247-300, (1994); 
Carlson, Toby Nahum, On the relation between NDVI, fractional vegetation cover, and leaf area index, Remote Sensing of Environment, 62, 3, pp. 241-252, (1997); 
Chang, Kangtsung, Modeling typhoon- and earthquake-induced landslides in a mountainous watershed using logistic regression, Geomorphology, 89, 3-4, pp. 335-347, (2007); 
Cochard, Roland, The 2004 tsunami in Aceh and Southern Thailand: A review on coastal ecosystems, wave hazards and vulnerability, Perspectives in Plant Ecology, Evolution and Systematics, 10, 1, pp. 3-40, (2008); 
Cohen, Warren B., Landsat's role in ecological applications of remote sensing, BioScience, 54, 6, pp. 535-545, (2004); 
Dai, Fuchu, Landslide characteristics and slope instability modeling using GIS, Lantau Island, Hong Kong, Geomorphology, 42, 3-4, pp. 213-228, (2002); 
de Jong, Rogier, Analysis of monotonic greening and browning trends from global NDVI time-series, Remote Sensing of Environment, 115, 2, pp. 692-702, (2011); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Díaz-Delgado, Ricardo, Influence of fire severity on plant regeneration by means of remote sensing imagery, International Journal of Remote Sensing, 24, 8, pp. 1751-1763, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Dai, F., Saraf, A.K.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Dai, Fuchu (7102055666); Saraf, Arun Kumar (7006460159)
35184309900; 8246843900; 7102055666; 7006460159
Comparison of different models for susceptibility mapping of earthquake triggered landslides related with the 2008 Wenchuan earthquake in China
(2012) Computers and Geosciences, 46, pp. 317 - 329, Cited 236 times.
DOI: 10.1016/j.cageo.2012.01.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862858195&doi=10.1016%2Fj.cageo.2012.01.002&partnerID=40&md5=2c359c9167b176a61c720c13da383355

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China; Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, UK, India
ABSTRACT: The main purpose of this study is to compare the following six GIS-based models for susceptibility mapping of earthquake triggered landslides: bivariate statistics (BS), logistic regression (LR), artificial neural networks (ANN), and three types of support vector machine (SVM) models that use the three different kernel functions linear, polynomial, and radial basis. The models are applied in a tributary watershed of the Fu River, a tributary of the Jialing River, which is part of the area of China affected by the May 12, 2008 Wenchuan earthquake. For this purpose, eleven thematic data layers are used: landslide inventory, slope angle, aspect, elevation, curvature, distance from drainages, topographic wetness index (TWI), distance from main roads, distance from surface rupture, peak ground acceleration (PGA), and lithology. The data layers were specifically constructed for analysis in this study. In the subsequent stage of the study, susceptibility maps were produced using the six models and the same input for each one. The validations of the resulting susceptibility maps were performed and compared by means of two values of area under curve (AUC) that represent the respective success rates and prediction rates. The AUC values obtained from all six results showed that the LR model provides the highest success rate (AUC=80.34) and the highest prediction rate (AUC=80.27). The SVM (radial basis function) model generates the second-highest success rate (AUC=80.302) and the second-highest prediction rate (AUC=80.151), which are close to the value from the LR model. The results using the SVM (linear) model show the lowest AUC values. The AUC values from the SVM (linear) model are only 72.52 (success rates) and 72.533 (prediction rates). Furthermore, the results also show that the radial basis function is the most appropriate kernel function of the three kernel functions applied using the SVM model for susceptibility mapping of earthquake triggered landslides in the study area. The paper also provides a counter-example for the widely held notion that validation performances of the results from application of the models obtained from soft computing techniques (such as ANN and SVM) are higher than those from applications of LR and BA models. © 2012 Elsevier Ltd.
AUTHOR KEYWORDS: Artificial neural networks; Bivariate statistics; Earthquake triggered landslides; Landslide susceptibility mapping; Logistic regression; Support vector machine
INDEX KEYWORDS: BA model; Bivariate; Data layer; Kernel function; Landslide susceptibility mapping; Logistic regressions; Main roads; Peak ground acceleration; Prediction rate; Radial basis; Radial basis functions; Slope angles; Softcomputing techniques; Study areas; Surface ruptures; Susceptibility mapping; Susceptibility maps; SVM model; Thematic data; Topographic wetness index; Tributary watersheds; Wenchuan Earthquake; Earthquakes; Forecasting; Landslides; Lithology; Logistics; Mapping; Neural networks; Radial basis function networks; Regression analysis; Soft computing; Support vector machines; artificial neural network; comparative study; earthquake trigger; GIS; landslide; mapping method; modeling; regression analysis; Sichuan earthquake 2008; tributary; watershed; China; Fu River; Hubei
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Anbalagan, Rathinam, Landslide hazard evaluation and zonation mapping in mountainous terrain, Engineering Geology, 32, 4, pp. 269-277, (1992); 
Arora, Manoj Kumar, An artificial neural network approach for landslide hazard zonation in the bhagirathi (ganga) valley, himalayas, International Journal of Remote Sensing, 25, 3, pp. 559-572, (2004); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Bednarik, Martin, Landslide susceptibility assessment of the Kraľovany-Liptovský Mikuláš railway case study, Physics and Chemistry of the Earth, 35, 3-5, pp. 162-171, (2010); 
Beven, Keith J., A physically based, variable contributing area model of basin hydrology, Hydrological Sciences Bulletin, 24, 1, pp. 43-69, (1979); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Chauhan, Shivani, Landslide susceptibility zonation through ratings derived from artificial neural network, International Journal of Applied Earth Observation and Geoinformation, 12, 5, pp. 340-350, (2010); 
Chung, Chungjo F., Probabilistic prediction models for landslide hazard mapping, Photogrammetric Engineering and Remote Sensing, 65, 12, pp. 1389-1399, (1999); 
Dahal, Ranjan Kumar, GIS-based weights-of-evidence modelling of rainfall-induced landslides in small catchments for landslide susceptibility mapping, Environmental Geology, 54, 2, pp. 311-324, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Chen, G., Tang, C., Zheng, L., Zhang, Y.
AUTHOR FULL NAMES: Li, Yange (55339639500); Chen, Guangqi (55577206900); Tang, Chuan (35932953300); Zheng, Lu (55273034500); Zhang, Yingbin Bin (57214256630)
55339639500; 55577206900; 35932953300; 55273034500; 57214256630
An approach from earthquake-induced landslides identification to numerical simulation of debris flow
(2012) Memoirs of the Faculty of Engineering, Kyushu University, 72 (2), pp. 69 - 83, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865152454&partnerID=40&md5=a0c9135ae2d136ec7b523481ad38232a

AFFILIATIONS: Department of Civil and Structural Engineering, Chengdu University of Technology, Chengdu, China; Department of Civil Engineering, Graduate School of Engineering, China; State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China
ABSTRACT: On August 14, 2010, an intense and prolonged rainfall triggered debris flow in Hongchun Gully, Yingxiu Town, the epicenter of Wenchuan earthquake. The event transported huge sediment material to the watercourse of the Minjiang River and formed a natural dam, resulting in flash flood in the new reconstruction Yingxiu Town. In order to predict the run out distance and extent of the hazard area of such kind of debris flows, we develop an approach from earthquake-induced landslides investigation to numerical simulation of debris flow in this study. At first, we determined the loose deposits by aerial photography identification and field investigation. Six large scale landslides were found in Hongchun Gully by using the object-oriented analysis remote sensing technique. And then, a two-dimensional numerical model was used to simulate the transport process of debris flow. Raster grid network of digital elevation model generated from GIS was used for the finite difference mesh. Results from the numerical simulation showed a good agreement with actual movement and deposition distribution of Hongchun Gully debris flow.
AUTHOR KEYWORDS: Aerial photography identification; Debris flow; GIS; Object-oriented analysis; Two-dimensional numerical model
INDEX KEYWORDS: Debris flows; Deposition distribution; Digital elevation model; Field investigation; Finite difference; Flash flood; Grid network; Hazard areas; Large-scale landslides; Loose deposits; Minjiang River; Natural dam; Object-oriented analysis; Remote sensing techniques; Runout distances; Transport process; Two dimensional numerical models; Wenchuan Earthquake; Aerial photography; Earthquakes; Geographic information systems; Landslides; Numerical models; Photographic equipment; Remote sensing; Two dimensional; Debris; aerial photography; debris flow; depositional sequence; digital elevation model; earthquake epicenter; earthquake trigger; flash flood; GIS; landslide; numerical model; rainfall; remote sensing; sediment transport; Sichuan earthquake 2008; China; Hongchun Gully; Min River [Sichuan]; Sichuan; Yingxiu
REFERENCES: Xu, Qiang, Spatial distribution of large-scale landslides induced by the 5.12 Wenchuan Earthquake, Journal of Mountain Science, 8, 2, pp. 246-260, (2011); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Tang, Chuan, Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China, Engineering Geology, 122, 1-2, pp. 22-33, (2011); 
Journal of Natural Disaster Science, (1981); 
Nichol, Janet Elizabeth, Satellite remote sensing for detailed landslide inventories using change detection and image fusion, International Journal of Remote Sensing, 26, 9, pp. 1913-1926, (2005); 
Cheng, Ke Sheng, Locating landslides using multi-temporal satellite images, Advances in Space Research, 33, 3, pp. 296-301, (2004); 
Mondini, Alessandro C., Combining multiple change detection indices for mapping landslides triggered by typhoons, Geomorphology, 134, 3-4, pp. 440-451, (2011); 
Borghuis, A. M., Comparison between automated and manual mapping of typhoon-triggered landslides from SPOT-5 imagery, International Journal of Remote Sensing, 28, 8, pp. 1843-1856, (2007); 
Nichol, Janet Elizabeth, Detection and interpretation of landslides using satellite images, Land Degradation and Development, 16, 3, pp. 243-255, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Guo, B., Tao, H., Liu, B., Jiang, L.
AUTHOR FULL NAMES: Guo, Bing (55343659000); Tao, Heping (18434979000); Liu, Bintao (35211116300); Jiang, Lin (57220699367)
55343659000; 18434979000; 35211116300; 57220699367
Characteristics and analysis of soil erosion in Li country after Wenchuan earthquake based on GIS and USLE
(2012) Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 28 (14), pp. 118 - 126, Cited 18 times.
DOI: 10.3969/j.issn.1002-6819.2012.14.019
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865381957&doi=10.3969%2Fj.issn.1002-6819.2012.14.019&partnerID=40&md5=1463f837650e7950e8db73a6a17284d1

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; College of Environmental and Resource Science, Chengdu University of Information Technology, Chengdu, Sichuan, China
ABSTRACT: In order to more accurately evaluate soil erosion of Li country, Wenchuan earthquake-stricken area, Sichuan province, potential and actual soil erosion was qualitatively analyzed using the combination method of GIS, RS and USLE, and a brief comparison of soil erosion before and after earthquake was conducted. Moreover, changes of soil erosion area about different erosion intensity and the soil erosion amount were studied from four aspects, including slope, slope aspect, land use patterns and elevation. The results showed that soil erosion in Li country amounted to 844.46 million tons in the whole year and the average soil erosion was 1957.79 t/(km 2·a), belonging to the moderate erosion. Compared with before earthquake, the areas of soil erosion were enlarged in mild, intensive and extreme regions especially at the region with slope more than 30-50 degree, altitude more than 2000-3000 m, as well as aspect of south and west slope. Further, the results provide a better basis for the reconstruction and the conservation of the soil erosion in Li country.
AUTHOR KEYWORDS: Earthquake-stricken area; Erosion; Geographic information systems; Li country; Remote sensing; Soils; Universal soil loss equation
INDEX KEYWORDS: Combination method; Earthquake-stricken area; Erosion intensity; Land use pattern; Sichuan province; Slope aspect; Soil erosion; Universal soil loss equation; Wenchuan Earthquake; Earthquakes; Geographic information systems; Remote sensing; Sediment transport; Soil conservation; Soils; Erosion
REFERENCES: Journal of Lanzhou University Natural Sciences, (2009); 
Journal of Subtropical Resources and Environment, (2007); 
Cochrane, Thomas A., Assessing water erosion in small watersheds using WEPP with GIS and digital elevation models, Journal of Soil and Water Conservation, 54, 4, pp. 678-685, (1999); 
Flanagan, Dennis C., Sediment particle sorting on hillslope profiles in the WEPP model, Transactions - American Society of Agricultural Engineers: General Edition, 43, 3, pp. 573-583, (2000); 
Liu, Baoyuan, The WEPP watershed model: III. Comparisons to measured data from small watersheds, Transactions - American Society of Agricultural Engineers: General Edition, 40, 4, pp. 945-952, (1997); 
Xu, Jiongxin, Threshold phenomenon of sediment reduction beneficials from soil-water conservation measures in the Wudinghe river, Shuikexue Jinzhan/Advances in Water Science, 17, 5, pp. 610-615, (2006); 
Lu, Jianzhong, Soil erosion changes based on GIS/RS and USLE in Poyang Lake basin, Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 27, 2, pp. 337-344, (2011); 
Zhang, Yan, Surveying soil erosion condition in Loess Plateau using soil erosion model, Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 28, 10, pp. 165-171, (2012); 
Wang, Yao, Fractal characteristics of vertical landscape of soil erosion in the Yimeng mountainous area, Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 26, 11, pp. 304-309, (2010); 
Gao, Peiling, Dynamic process simulation model for soil erosion of small-scale watershed system, Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 26, 10, pp. 45-50, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Zhang, Y., Li, Z.
AUTHOR FULL NAMES: Li, Yigang (55718906700); Zhang, Yuan (57211357969); Li, Zhiwei (56075629700)
55718906700; 57211357969; 56075629700
Optimized allocation model of rescue power in earthquake-stricken area
(2012) Journal of Natural Disasters, 21 (3), pp. 150 - 154, Cited 9 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867053240&partnerID=40&md5=8dde6e5d34a9f87e785f76991968c029

AFFILIATIONS: National Earthquake Response Support Service Center, Beijing, China
ABSTRACT: This paper systemically described how to allocate rescue forces in an earthquake disaster stricken area, including selecting the emergency rescue targets, analyzing the needs of rescue teams of certain unit and allocation of rescue teams, among which estimate the needs of rescue force is the precondition of the allocation analysis. Two methods were given in this paper to assess the need of rescue forces. One is to select the rescue target by its important level and the other is to calculate the needs based on empirical relationship developed from investigation of the Wenchuan earthquake. Allocating the rescue teams is the solution of the classical transportation problem. Herein, based on an open source model package and ArcGIS software, an analysis tool was developed to solve the team allocation problem. An example using the data obtained from Wenchuan earthquake was given to illustrate the optimal allocation of the rescue forces in the end.
AUTHOR KEYWORDS: Earthquake-stricken area; Optimized allocation model; Rescue power
INDEX KEYWORDS: disaster management; empirical analysis; GIS; numerical model; optimization; Sichuan earthquake 2008; software; China; Sichuan; Wenchuan
REFERENCES: Fiedrich, Frank, Optimized resource allocation for emergency response after earthquake disasters, Safety Science, 35, 1-3, pp. 41-57, (2000); 
Fire Mapping with Arcgis R, (2007); 
Journal of Seismological Research, (2008); 
Allocation Model of Emergency Rescue Force for Urban Disaster Incident M, (2012); 
Methodologies for the assessment of earthquake casualties, 20, 4, pp. 140-147; 
Study on Allocation Strategy of Emergency Logistics for Natural Disaster, (2012); 
Journal of Chinese People S Armed Police Force Academy, (2008); 
Resources Science, (2001)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiang, L., Cui, P., Zhong, D., Ge, Y., Zhu, X., Yang, W.
AUTHOR FULL NAMES: Xiang, Lingzhi (36195988600); Cui, Peng (56706923500); Zhong, Dunlun (18435663500); Ge, Yonggang (26039083000); Zhu, Xinghua (55696606100); Yang, Wei (57198594507)
36195988600; 56706923500; 18435663500; 26039083000; 55696606100; 57198594507
Quantitative hazard assessment of road debris flow in Wenchuan earthquake area: A case study of Xiaojia ravine in Wenchuan county
(2012) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 47 (3), pp. 387 - 393, Cited 7 times.
DOI: 10.3969/j.issn.0258-2724.2012.03.006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864551871&doi=10.3969%2Fj.issn.0258-2724.2012.03.006&partnerID=40&md5=c0b6c295215dcb7e7dc91dc11d4dc523

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: A quantitative assessment method of debris flow hazard to roads in Wenchuan earthquake areas was established based on the case study of Xiaojia ravine to assess serious debris flow disasters happening frequently in 3 years after the Wenchuan earthquake. The environmental and geology background and the basic parameters such as the area and gradient of Xiaojia ravine were anglicized through a field investigation and using the RS and GIS technologies. The total amount of once debris flow process calculated by the rain-storm and flood method and the method of completing the square was taken as the pile quantities. Pile scope parameters, including average pile thickness, length and width, were estimated by a regression expression derived from field investigation data. Then the damage degree of debris flow to the roads beside Yuzi river was calculated quantitatively by the geometric generalization method. The research shows that the total amount of once debris flow process is 41×10 4 m 3 under rainfall that occurs once every 50 years, the roads will be completely buried and the river blocked by the debris flow. The above results are basically coincident with the actual hazard situation.
AUTHOR KEYWORDS: Blocking river; Debris flow; Hazard; Road; Xiaojia ravine
INDEX KEYWORDS: Basic parameters; Damage degrees; Debris flow hazards; Debris flows; Field investigation; Hazard Assessment; Quantitative assessments; Regression expressions; Road; RS and GIS; Wenchuan Earthquake; Xiaojia ravine; Debris; Earthquakes; Environmental technology; Hazards; Rain; Research; Rivers; Roads and streets; Piles
REFERENCES: Journal of Mountain Science, (2008); 
Journal of Railway Engineering Society, (2001); 
Highway, (2003); 
Journal of Chongqing Jiaotong University, (2004); 
Mountain Journal, (2004); 
Journal of Engineering Geology, (2003); 
He, Yiping, Debris flows along the China-Nepal Highway, Dili Xuebao/Acta Geographica Sinica, 57, 3, pp. 275-283, (2002); 
Michael-Leiba, Marion O., Regional landslide risk to the Cairns community, Natural Hazards, 30, 2, pp. 233-249, (2003); 
Cruz, Ana María, Methodology for preliminary assessment of Natech risk in urban areas, Natural Hazards, 46, 2, pp. 199-220, (2008); 
Arksey, Ron, Example of a debris-flow risk analysis from Vancouver Island, British Columbia, Canada, Landslides, 5, 1, pp. 121-126, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Gong, J.H., Zhu, J., Ye, L., Song, Y.Q., Yue, Y.J.
AUTHOR FULL NAMES: Li, Yi (55983807900); Gong, Jianhuaa Hua (59157665500); Zhu, J. (59891207900); Ye, L. (59279093500); Song, Yiquan (55428354300); Yue, Yujuan (36135093400)
55983807900; 59157665500; 59891207900; 59279093500; 55428354300; 36135093400
Efficient dam break flood simulation methods for developing a preliminary evacuation plan after the Wenchuan Earthquake
(2012) Natural Hazards and Earth System Sciences, 12 (1), pp. 97 - 106, Cited 24 times.
DOI: 10.5194/nhess-12-97-2012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861555648&doi=10.5194%2Fnhess-12-97-2012&partnerID=40&md5=483059d90b6dc3b7895021a0bb64cf4b

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Zhejiang-CAS Application Center for Geoinformatics, Hangzhou, Zhejiang, China; Southwest Jiaotong University, Chengdu, Sichuan, China; College of Urban and Environmental Science, Tianjin Normal University, Tianjin, China; Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The Xiaojiaqiao barrier lake, which was the second largest barrier lake formed by the Wenchuan Earthquake had seriously threatened the lives and property of the population downstream. The lake was finally dredged successfully on 7 June 2008. Because of the limited time available to conduct an inundation potential analysis and make an evacuation plan, barrier lake information extraction and real-time dam break flood simulation should be carried out quickly, integrating remote sensing and geographic information system (GIS) techniques with hydrologic/hydraulic analysis. In this paper, a technical framework and several key techniques for this real-time preliminary evacuation planning are introduced. An object-oriented method was used to extract hydrological information on the barrier lake from unmanned aerial vehicle (UAV) remote sensing images. The real-time flood routine was calculated by using shallow-water equations, which were solved by means of a finite volume scheme on multiblock structured grids. The results of the hydraulic computations are visualized and analyzed in a 3-D geographic information system for inundation potential analysis, and an emergency response plan is made. The results show that if either a full-break or a half-break situation had occurred for the Chapinghe barrier lake on 19 May 2008, then the Xiaoba Town region and the Sangzao Town region would have been affected, but the downstream towns would have been less influenced. Preliminary evacuation plans under different dam break situations can be effectively made using these methods. © 2012 Author(s). CC Attribution 3.0 License.
INDEX KEYWORDS: computer simulation; dam failure; disaster management; finite volume method; flood; GIS; lake; planning method; remote sensing; shallow-water equation; Sichuan earthquake 2008
REFERENCES: Amini, Jalal, A method for generating floodplain maps using ikonos images and dems, International Journal of Remote Sensing, 31, 10, pp. 2441-2456, (2010); 
Bitelli, Gabriele, Image change detection on urban area: The earthquake case, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 35, pp. 692-697, (2004); 
Cheng, Genwei, Outburst risk of barrier lakes in Sichuan, China, Journal of Mountain Science, 5, 3, pp. 189-193, (2008); 
Dong, J. J., Logistic regression model for predicting the failure probability of a landslide dam, Engineering Geology, 117, 1-2, pp. 52-61, (2011); 
Ehrlich, Daniele, Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data, International Journal of Digital Earth, 2, 4, pp. 309-326, (2009); 
Engman, Edwin T., Roughness coefficients for routing surface runoff, Journal of Irrigation and Drainage Engineering - ASCE, 112, 1, pp. 39-53, (1986); 
Use of GIS in Flood Risk Mapping, (2007); 
HONG, Yang, Use of 21st century satellite remote sensing technology in natural hazard analysis, Natural Hazards, 43, 2, pp. 165-166, (2007); 
Li, Yi, An UAV remote sensing image-supporting technique for scenes' multi-quadtree organization and inter-source dispatch, Gaojishu Tongxin/Chinese High Technology Letters, 19, 9, pp. 971-976, (2009); 
Liu, Liangyun, Monitoring and assessment of barrier lakes formed after the Wenchuan earthquake based on multitemporal remote sensing data, Journal of Applied Remote Sensing, 3, 1, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Brown, D., Saito, K., Liu, M., Spence, R., So, E., Ramage, M.
AUTHOR FULL NAMES: Brown, Daniel (59852276000); Saito, Keiko (55125368100); Liu, Meng (55743545600); Spence, Robin J.S. (57203081980); So, Emily K.M. (24377128400); Ramage, Michael H. (26035421100)
59852276000; 55125368100; 55743545600; 57203081980; 24377128400; 26035421100
The use of remotely sensed data and ground survey tools to assess damage and monitor early recovery following the 12.5.2008 Wenchuan earthquake in China
(2012) Bulletin of Earthquake Engineering, 10 (3), pp. 741 - 764, Cited 25 times.
DOI: 10.1007/s10518-011-9318-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860991882&doi=10.1007%2Fs10518-011-9318-7&partnerID=40&md5=1df75be0adeaddd8081931fc91d61335

AFFILIATIONS: Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, China; Department of Architecture, University of Cambridge, Cambridge, Cambridgeshire, United Kingdom; Cambridge Architectural Research Ltd, Cambridge, Cambridgeshire, United Kingdom
ABSTRACT: The M7.9 Wenchuan earthquake on May 12th, 2008 was the most destructive in China since 1976. The event caused huge damage and loss of life and exposed weaknesses both in the formulation and implementation of the regulations governing building in the affected provinces. Following the earthquake a massive relief and recovery operation was mounted by the Chinese government. The authors took part in field studies in the affected area which took place 5 and 11 months after the event, at which time recovery operations were well-advanced. The aims of the study were to assess the effects caused by the earthquake to the built environment and society, to collect information on the ongoing recovery efforts and future plans, and to demonstrate the use of tools that allow the collection of spatially referenced damage and recovery data. Based on available satellite imagery supplemented by ground observation, geodatabases were constructed containing information on damage and recovery in several parts of the affected area. The paper gives an overview of the recovery process, describes the methods used to construct these geodatabases, and offers some analysis of the data obtained. It is argued that such databases have great potential for the management of post-disaster recovery and for creating a permanent record of the recovery process. © Springer Science+Business Media B.V. 2011.
AUTHOR KEYWORDS: Damage; Earthquake; Recovery; Wenchuan
INDEX KEYWORDS: Affected area; Built environment; Chinese Government; Damage; Ground observations; Ground surveys; In-field; Loss of life; Recovery process; Remotely sensed data; Time recovery; Wenchuan; Wenchuan Earthquake; Earthquakes; Remote sensing; Satellite imagery; Recovery; damage; database; disaster management; disaster relief; earthquake damage; earthquake intensity; earthquake magnitude; field survey; ground-based measurement; remote sensing; satellite imagery; Sichuan earthquake 2008; China; Sichuan
REFERENCES: Introduction to Damage Assessment Methodologies, (2008); 
Mceer Research and Accomplishments 2003 2004, (2004); 
Earthquake Spectra to Be Published in, (2011); 
Proceedings 6th International Workshop on Remote Sensing for Disaster Applications, (2008); 
Monitoring and Evaluating Post Disaster Recovery Using High Resolution Satellite Imagery Towards Standardised Indicators for Post Disaster Recovery, (2017); 
Seismic Intensity Map of the M8 0 Wenchuan Earthquake, (2008); 
Wenchuan Dizhen Zaihai Dituji Wenchuan Earthquake Disaster Map Atlas, (2009); 
Coburn, Andrew W., Earthquake protection, (1992); 
Dell’Acqua, Fabio, Earthquake damages rapid mapping by satellite remote sensing data: L'Aquila april 6th, 2009 event, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 4, 4, pp. 935-943, (2011); 
A Preliminary Field Report by Eefit, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yang, C.J., Ren, X., Huang, H.
AUTHOR FULL NAMES: Yang, Cunjian (23494316400); Ren, Xiaolan (54407473200); Huang, He (55738264700)
23494316400; 54407473200; 55738264700
The vegetation damage assessment of the Wenchuan earthquake of May 2008 using remote sensing and GIS
(2012) Natural Hazards, 62 (1), pp. 45 - 55, Cited 16 times.
DOI: 10.1007/s11069-011-0036-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859507089&doi=10.1007%2Fs11069-011-0036-x&partnerID=40&md5=8d9f639cd61b6ec7d9ac423ffa10c37d

AFFILIATIONS: Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Sichuan Normal University, Chengdu, Sichuan, China
ABSTRACT: The methodology for assessing the vegetation damaged by the Wenchuan earthquake by using the technologies of remote sensing and GIS was discussed in Dujiangyan city of Sichuan Province, China. The model of extracting vegetation from CBERS images was formulated using the differentiation knowledge of vegetation and non-vegetation discovered by image analysis and geographic analysis. The damage degree index (DDI) of the vegetation was defined here, which was the difference of the normalized difference vegetation index before the earthquake and that after earthquake. The China-Brazil Earth Resource Satellite (CBERS)-02's images acquired, respectively, on 6 May and 27 June 2008, the model of extracting vegetation, and DDI were used to obtain the information about the area and degree of the damage vegetation in the study. There was 87. 94 square kilometers vegetation damaged by Wenchuan earthquake, which accounted for 7. 9% of the total area in Dujiangyan city. The area percentage of the damage vegetation in each grade related strongly and positively to the elevation grade and slope grade and weakly related to the aspect type. The distribution characteristics of the damage vegetation were useful for making plan of restoring vegetation here. © Springer Science+Business Media B.V. 2011.
AUTHOR KEYWORDS: Damage vegetation; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: damage mechanics; earthquake damage; earthquake mechanism; ERS-2; GIS; NDVI; remote sensing; Sichuan earthquake 2008; technology adoption; vegetation cover; China; Dujiangyan; Sichuan
REFERENCES: Remote Sensing Technology and Application, (2008); 
Journal of Remote Sensing, (2008); 
Ecology and Environment, (2006); 
Soil Water Conserv China, (2009); 
Li, Yijing, Vegetation change in Shenzhen city based on NDVI change classification, Chinese Journal of Applied Ecology, 19, 5, pp. 1064-1070, (2008); 
Geomatics and Spatial Information Technology, (2010); 
J Soil Water Conserv, (2009); 
Soil Water Conserv China, (2010); 
Sichuan Environ, (2009); 
Xu, Xinliang, Assessment about the impact of Wenchuan Earthquake on ecological environment, Shengtai Xuebao, 28, 12, pp. 5899-5908, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Han, J., Zhang, P., Song, Y.
AUTHOR FULL NAMES: Han, Jinhua (56170957900); Zhang, Peng (56137759500); Song, Yinghua (55494064600)
56170957900; 56137759500; 55494064600
The construction of emergency management whole process model based on the emergency life-cycle: Wenchuan case study
(2012) Advances in Intelligent and Soft Computing, 136, pp. 235 - 242, Cited 3 times.
DOI: 10.1007/978-3-642-27711-5_32
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860209154&doi=10.1007%2F978-3-642-27711-5_32&partnerID=40&md5=940f0c6f797ad8b529abcd0c33308bbb

AFFILIATIONS: School of Management, Wuhan University of Technology, Wuhan, Hubei, China; RMIT University, School of Property, Construction and Project Management, Melbourne, VIC, Australia
ABSTRACT: The theory of emergency management life-cycle has assisted both researchers and managers. It not only is used to systematize and codify research results but also drawn upon to organize emergency activities. This paper reviews the development of the theory of emergency management life-cycle and analyzes the deficiencies. Based on the discussion and analysis on the previous studies, a new emergency life-cycle whole process model is generated. There are three phases (forecast and early warning, rescue and disposal, recovery and reconstruction) and three foundations (mitigation, preparedness, and communication) included in this model. In addition, Wenchuan earthquake is studied in this paper. © 2012 Springer-Verlag GmbH Berlin Heidelberg.
AUTHOR KEYWORDS: Emergency Life-cycle; Emergency Management; Whole Process Model
INDEX KEYWORDS: Early warning; Emergency Life-cycle; Emergency management; Research results; Three phasis; Wenchuan Earthquake; Whole process; Civil defense; Disasters; Earthquakes; Research; Risk management; Life cycle
REFERENCES: International Journal of Mass Emergencies and Disasters, (1997); 
Technology Supporting Emergency Response, (2005); 
Emergency Management Prevention Dispose Recovery and Reconstruction, (2009); 
Comprehensive Emergency Management A Governor S Guide, (1979); 
Crisis Management, (2025); 
Journal of Safety Science and Technology, (2010); 
Commissioned Research Report of the Executive Yuan Disaster Prevention Committee, (2003); 
Theory and Practice of Emergency Management, (2010); 
Early Warning Systems for Natural Disaster Reduction, (2003); 
Disaster Preparedness Concepts, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Dai, F., Xiwei, X., Lee, Y.H.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Dai, Fuchu (7102055666); Xiwei, Xu (8246843900); Lee, Yuanhsi (36165478000)
35184309900; 7102055666; 8246843900; 36165478000
GIS-based support vector machine modeling of earthquake-triggered landslide susceptibility in the Jianjiang River watershed, China
(2012) Geomorphology, 145-146, pp. 70 - 80, Cited 415 times.
DOI: 10.1016/j.geomorph.2011.12.040
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862817248&doi=10.1016%2Fj.geomorph.2011.12.040&partnerID=40&md5=b12c98906d0e5f6b544fdccc542f96d9

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China; Department of Earth and Environmental Sciences, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan
ABSTRACT: Support vector machine (SVM) modeling is based on statistical learning theory. It involves a training phase with associated input and target output values. In recent years, the method has become increasingly popular. The main purpose of this study is to evaluate the mapping power of SVM modeling in earthquake triggered landslide-susceptibility mapping for a section of the Jianjiang River watershed using a Geographic Information System (GIS) software. The river was affected by the Wenchuan earthquake of May 12, 2008. Visual interpretation of colored aerial photographs of 1-m resolution and extensive field surveys provided a detailed landslide inventory map containing 3147 landslides related to the 2008 Wenchuan earthquake. Elevation, slope angle, slope aspect, distance from seismogenic faults, distance from drainages, and lithology were used as the controlling parameters. For modeling, three groups of positive and negative training samples were used in concert with four different kernel functions. Positive training samples include the centroids of 500 large landslides, those of all 3147 landslides, and 5000 randomly selected points in landslide polygons. Negative training samples include 500, 3147, and 5000 randomly selected points on slopes that remained stable during the Wenchuan earthquake. The four kernel functions are linear, polynomial, radial basis, and sigmoid. In total, 12 cases of landslide susceptibility were mapped. Comparative analyses of landslide-susceptibility probability and area relation curves show that both the polynomial and radial basis functions suitably classified the input data as either landslide positive or negative though the radial basis function was more successful. The 12 generated landslide-susceptibility maps were compared with known landslide centroid locations and landslide polygons to verify the success rate and predictive accuracy of each model. The 12 results were further validated using area-under-curve analysis. Group 3 with 5000 randomly selected points on the landslide polygons, and 5000 randomly selected points along stable slopes gave the best results with a success rate of 79.20% and predictive accuracy of 79.13% under the radial basis function. Of all the results, the sigmoid kernel function was the least skillful when used in concert with the centroid data of all 3147 landslides as positive training samples, and the negative training samples of 3147 randomly selected points in regions of stable slope (success rate = 54.95%; predictive accuracy = 61.85%). This paper also provides suggestions and reference data for selecting appropriate training samples and kernel function types for earthquake triggered landslide-susceptibility mapping using SVM modeling. Predictive landslide-susceptibility maps could be useful in hazard mitigation by helping planners understand the probability of landslides in different regions. © 2011 Elsevier B.V.
AUTHOR KEYWORDS: GIS; Landslide susceptibility mapping; Landslides; SVM; Wenchuan earthquake
INDEX KEYWORDS: aerial photograph; comparative study; elevation; GIS; landslide; mapping method; natural disaster; numerical model; Sichuan earthquake 2008; slope angle; statistical analysis
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Alexander, David E., A brief survey of GIS in mass-movement studies, with reflections on theory and methods, Geomorphology, 94, 3-4, pp. 261-267, (2008); 
Anbalagan, Rathinam, Landslide hazard evaluation and zonation mapping in mountainous terrain, Engineering Geology, 32, 4, pp. 269-277, (1992); 
Geophysical Research Abstracts, (2008); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Geographical Information Systems in Assessing Natural Hazards, (1995); 
Carrara, Alberto, Use of GIS technology in the prediction and monitoring of landslide hazard, Natural Hazards, 20, 2-3, pp. 117-135, (1999); 
Chacón, José, Engineering geology maps: Landslides and geographical information systems, Bulletin of Engineering Geology and the Environment, 65, 4, pp. 341-411, (2006); 
Corominas, Jordi, A review of assessing landslide frequency for hazard zoning purposes, Engineering Geology, 102, 3-4, pp. 193-213, (2008); 
Dai, Fuchu, Assessment of landslide susceptibility on the natural terrain of Lantau Island, Hong Kong, Environmental Geology, 40, 3, pp. 381-391, (2001)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, Y., Wang, J., Li, X., Ren, D., Driskell, L., Zhu, J.
AUTHOR FULL NAMES: Hu, Yi (56163090200); Wang, Jinfeng (55868825200); Li, Xiaohong (36627308700); Ren, Dan (43161366800); Driskell, Luke (36657045500); Zhu, Jun (56215097100)
56163090200; 55868825200; 36627308700; 43161366800; 36657045500; 56215097100
Exploring geological and socio-demographic factors associated with under-five mortality in the Wenchuan earthquake using neural network model
(2012) International Journal of Environmental Health Research, 22 (2), pp. 184 - 196, Cited 6 times.
DOI: 10.1080/09603123.2011.613113
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859193842&doi=10.1080%2F09603123.2011.613113&partnerID=40&md5=4b638f33d0ccd8281d1356570dbf1be1

AFFILIATIONS: School of Earth Science and Mineral Resources, School of the Earth Sciences and Resources, Beijing, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Sichuan University, Chengdu, Sichuan, China; Department of Geography & Anthropology, Louisiana State University, Baton Rouge, LA, United States
ABSTRACT: On 12 May 2008, a devastating earthquake occurred in Sichuan Province, China, taking tens of thousands of lives and destroying the homes of millions of people. Among the large number of dead or missing were children, particularly children aged less than five years old, a fact which drew significant media attention. To obtain relevant information specifically to aid further studies and future preventative measures, a neural network model was proposed to explore some geological and socio-demographic factors associated with earthquake-related child mortality. Sensitivity analysis showed that topographic slope (mean 35.76%), geomorphology (mean 24.18%), earthquake intensity (mean 13.68%), and average income (mean 11%) had great contributions to child mortality. These findings could provide some clues to researchers for further studies and to policy makers in deciding how and where preventive measures and corresponding policies should be implemented in the reconstruction of communities. © 2012 Taylor & Francis.
AUTHOR KEYWORDS: earthquake; Geographic Information System (GIS); neural network model; risk factors; under-five mortality
INDEX KEYWORDS: artificial neural network; child health; demographic trend; geomorphology; GIS; mortality; reconstruction; sensitivity analysis; Sichuan earthquake 2008; slope; topography; article; child; childhood mortality; China; demography; earthquake; human; preschool child; school child; Child Mortality; Child, Preschool; Demography; Earthquakes; Geological Phenomena; Humans; Infant; Infant Mortality; Infant, Newborn; Neural Networks (Computer); Sichuan
REFERENCES: Understanding Regression Analysis, (1997); 
Andreassen, Helle, Analysis of the secondary structure of the human immunodeficiency virus (Hiv) proteins pl7, gpl20, and gp41 by computer modeling based on neural network methods, Journal of Acquired Immune Deficiency Syndromes (1999), 3, 6, pp. 615-622, (1990); 
Armenian, Haroutune K., Deaths and injuries due to the earthquake in Armenia: A cohort approach, International Journal of Epidemiology, 26, 4, pp. 806-813, (1997); 
Regression Diagnostics, (1980); 
Neural Networks for Pattern Recognition, (1995); 
Bourquin, Jacques, Advantages of Artificial Neural Networks (ANNs) as alternative modelling technique for data sets showing non-linear relationships using data from a galenical study on a solid dosage form, European Journal of Pharmaceutical Sciences, 7, 1, pp. 5-16, (1998); 
Burrough, Peter A.B., Principles of geographical information systems for land resources assessment., (1986); 
Environment as Hazard, (1993); 
Cathcart, Stuart, Headache interference as a function of affect and coping: An artificial neural network analysis, Headache, 39, 4, pp. 270-274, (1999); 
Geophysical Research Abstracts, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, F., Li, D., Liu, D., Li, J., Tang, H.
AUTHOR FULL NAMES: Liu, Fangxiao (56133360400); Li, Dewei (55704084500); Liu, Demin (55908817500); Li, Jiong (57216662214); Tang, Huiming (58132262400)
56133360400; 55704084500; 55908817500; 57216662214; 58132262400
Tectonic analysis of Wenchuan earthquake collapse and landslide development characteristics and spatial distribution law
(2012) Lecture Notes in Electrical Engineering, 155 LNEE, pp. 757 - 765, Cited 1 times.
DOI: 10.1007/978-3-642-28744-2_98
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863351874&doi=10.1007%2F978-3-642-28744-2_98&partnerID=40&md5=a737125e0c0b594f61a22786d8f4e487

AFFILIATIONS: Department of Earth Sciences, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: Collapses and landslides induced by Wenchuan earthquake concentrated in the hanging wall of causative fault, and high-density areas mainly located in the 30km radius buffer zone of the causative fault (Yingxiu - Beichuan fault). And its' mechanism and characteristics showed collapses bodies launched, landslides bodies long-distance and throwing slided which were different from normal gravity slumps. This paper analysises the development characteristics and spatial distribution of earthquake collapses and landslides from the deep structure and its shallow surface response by geological survey and interpretation of the geophysical data and remote sensing data. The research suggests that many phenomena and problems related to the Wenchuan earthquake collapses and landslides are far beyond people's previous cognition, and its development and distribution characteristics are closely related to lower crust flow of the Qinghai-Tibet plateau and the conversion between its horizontal and vertical movement, hence the mechanism of the earthquake is the key issue of earthquake collapse and landslide development. © 2012 Springer-Verlag GmbH.
AUTHOR KEYWORDS: collapses and landslides; lower crustal flow; mechanism of the earthquake; tectonic analysis; Wenchuan earthquake
INDEX KEYWORDS: Buffer zones; Crustal flow; Deep structure; Distribution characteristics; Geophysical data; High-density; Lower crust; Normal gravities; Qinghai Tibet plateau; Remote sensing data; Surface response; Tectonic analysis; Vertical movement; Wenchuan Earthquake; Earthquakes; Gravitation; Landslides; Remote sensing; Spatial distribution; Faulting
REFERENCES: Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
He, Honglin, Rupture of the MS8.0 Wenchuan earthquake along Baishahe River, Dizhen Dizhi, 30, 3, pp. 658-673, (2008); 
Journal of Engineering Geology, (2008); 
Journal of China University of Geosiences, (2010); 
Geological Review, (2008); 
Xu, Zhiqin Qin, Uplift of the Longmen-Jinping orogenic belt along the eastern margin of the Qinghai-Tibet Plateau: Large-scale detachment faulting and extrusion mechanism, Geological Bulletin of China, 26, 10, pp. 1262-1276, (2007); 
Liuf Jan-Hua, Three dimensional velocity images of the crust and upper mantle beneath North-South zone in China, Acta Geophysica Sinica, 32, 2, pp. 143-152, (1989); 
Wang, Chunyong Young, A Study on 3-D velocity structure of crust and upper mantle in Sichuan-Yunnan region, China, Acta Seismologica Sinica English Edition, 15, 1, (2002); 
Science in China Series D, (2003); 
Earthquake Research in Sichuan, (2006)
CONFERENCE NAME: 2012 2nd International Conference on Electric and Electronics, EEIC 2012
CONFERENCE DATE: 2012-04-21 through 2012-04-22
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tong, X., Hong, Z., Liu, S., Zhang, X., Xie, H., Li, Z., Yang, S., Wang, W., Bao, F.
AUTHOR FULL NAMES: Tong, Xiaohua (55500134600); Hong, Zhonghua (57918901800); Liu, Shijie (55724717800); Zhang, Xue (55261449200); Xie, Huan (36117406500); Li, Zhengyuan (57196398468); Yang, Sonlin (55261877800); Wang, Weian (15841008300); Bao, Feng (7006946352)
55500134600; 57918901800; 55724717800; 55261449200; 36117406500; 57196398468; 55261877800; 15841008300; 7006946352
Building-damage detection using pre- and post-seismic high-resolution satellite stereo imagery: A case study of the May 2008 Wenchuan earthquake
(2012) ISPRS Journal of Photogrammetry and Remote Sensing, 68 (1), pp. 13 - 27, Cited 146 times.
DOI: 10.1016/j.isprsjprs.2011.12.004
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862798431&doi=10.1016%2Fj.isprsjprs.2011.12.004&partnerID=40&md5=b326fdc275c534e6465b6bc351a75047

AFFILIATIONS: Department of Surveying and Geo-Informatics, Tongji University, Shanghai, China; China Earthquake Networks Center, Beijing, China; School of Civil Engineering, Beijing Jiaotong University, Beijing, China
ABSTRACT: To address the disadvantage of traditional methods providing only two-dimensional (2D) damage change of the collapsed buildings, this paper presents an approach for the detection of the buildings that have collapsed in an earthquake based on 3D geometric changes, particularly height change of the buildings, using pre- and post-seismic IKONOS stereo image pairs. One of the critical issues - the accuracy of the 3D ground point determination from high-resolution satellite imagery (HRSI) - is first addressed employing a bias-compensation model based on the rational function polynomial coefficient bundle adjustment. With the refined 3D ground coordinates, two ways of detecting the collapsed buildings are proposed: (1) detection of an individual collapsed building by comparing the height differences at the corner points of the building calculated from the pre- and post-seismic IKONOS stereo pairs and (2) determination of the region of collapsed buildings by calculating the difference between the pre- and post-seismic digital elevation models (DEMs) generated again from the pre- and post-seismic stereo images. At the same time, a pre-seismic DEM based on a topographical map is generated for detection comparison in the study.The experiment results for Dujiangyan using two IKONOS stereo pairs before and after the Wenchuan earthquake demonstrated the following. (1) Accuracy of better than 1.1. m in planimetry and 1.5. m in height can be achieved from the pre- and post-seismic IKONOS stereo image pairs using the affine bias compensation model. This accuracy guarantees the feasibility of detecting the 3D geometric changes of the earthquake-induced building collapses from pre- and post-seismic HRSI stereo images. (2) Using the refined 3D coordinates of the ground points computed from the pre- and post-seismic IKONOS stereo pairs, the status (i.e., totally collapsed, partially collapsed or not collapsed) and the number of collapsed storeys can be estimated for an individual building being assessed. (3) The region of collapsed buildings can be determined by differencing the pre- and post-seismic DEMs created from the pre- and post-seismic IKONOS stereo pairs. An overall accuracy of better than 90% is achieved for the detection of the collapsed buildings based on the difference DEM using the pixel- and object-based assessment methods. © 2011 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS).
AUTHOR KEYWORDS: Building collapse detection; Digital elevation model; Earthquake; Geopositioning accuracy; IKONOS stereo images; Rational polynomial coefficient
INDEX KEYWORDS: 3D coordinates; Affine bias; Assessment methods; Building collapse; Bundle adjustments; Collapsed buildings; Corner point; Critical issues; Digital elevation model; Geo-positioning; Geometric changes; Ground point; High resolution; High resolution satellite imagery; Model-based OPC; Object based; Polynomial coefficients; Rational polynomial coefficients; Stereo image pairs; Stereo imagery; Stereo pair; Stereo-image; Wenchuan Earthquake; Buildings; Damage detection; Digital instruments; Earthquakes; Face recognition; Forestry; Geomorphology; Refining; Satellite imagery; Surveying; Three dimensional; accuracy assessment; building; collapse; detection method; digital elevation model; earthquake damage; error correction; IKONOS; pixel; Sichuan earthquake 2008; stereo image; structural response; three-dimensional modeling; topography; China; Dujiangyan; Sichuan
REFERENCES: Adams, Beverley J., Streamlining post-earthquake data collection and damage assessment for the 2003 Bam, Iran, earthquake using VIEWS™ (visualizing impacts of earthquakes with satellites), Earthquake Spectra, 21, SUPPL. 1, pp. S213-S218, (2005); 
Alobeid, Abdalla, Comparison of matching algorithms for DSM generation in urban areas from Ikonos imagery, Photogrammetric Engineering and Remote Sensing, 76, 9, pp. 1041-1050, (2010); 
Ayache, Nicholas, Efficient registration of stereo images by matching graph descriptions of edge segments, International Journal of Computer Vision, 1, 2, pp. 107-131, (1987); 
undefined, (2001); 
Birchfield, Stan T., Depth discontinuities by pixel-to-pixel stereo, International Journal of Computer Vision, 35, 3, pp. 269-293, (1999); 
Brunner, Dominik, Earthquake damage assessment of buildings using VHR optical and SAR imagery, IEEE Transactions on Geoscience and Remote Sensing, 48, 5, pp. 2403-2420, (2010); 
Byrne, G. F., Monitoring land-cover change by principal component analysis of multitemporal landsat data, Remote Sensing of Environment, 10, 3, pp. 175-184, (1980); 
Cheng, D., Delimiting the building heights in a city from the shadow in a panchromatic SPOT-image-part 1. Test of forty-two buildings, International Journal of Remote Sensing, 16, 3, pp. 409-415, (1995); 
Chini, Marco, Uplift and subsidence due to the 26 December 2004 Indonesian earthquake detected by SAR data, International Journal of Remote Sensing, 29, 13, pp. 3891-3910, (2008); 
Chini, Marco, Co-seismic surface effects from very high resolution panchromatic images: The case of the 2005 Kashmir (Pakistan) earthquake, Natural Hazards and Earth System Sciences, 11, 3, pp. 931-943, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Du, P., Chen, J., Chen, C., Liu, Y., Liu, J., Wang, H., Zhang, X.
AUTHOR FULL NAMES: Du, Pengfei (26643625200); Chen, Jining (55860425800); Chen, Chao (56304454800); Liu, Yi (57192561333); Liu, Jianguo (56036041300); Wang, Hongtao (55963059800); Zhang, Xiaojian (45861618700)
26643625200; 55860425800; 56304454800; 57192561333; 56036041300; 55963059800; 45861618700
Environmental risk evaluation to minimize impacts within the area affected by the Wenchuan earthquake
(2012) Science of the Total Environment, 419, pp. 16 - 24, Cited 25 times.
DOI: 10.1016/j.scitotenv.2011.12.017
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862791519&doi=10.1016%2Fj.scitotenv.2011.12.017&partnerID=40&md5=e96ef1bb433cf742153c3bc437f46487

AFFILIATIONS: School of Environment, Tsinghua University, Beijing, China
ABSTRACT: Earthquakes can be devastating to built infrastructure and the natural environment, as evidenced by the March 2011, M = 9.0 earthquake, and subsequent tsunami, in Japan. As seen in the Japanese event, environmental damage caused by secondary disasters (tsunami, leakage from a nuclear reactor) can equal or exceed the impacts of the primary event. In order to develop an environmental assessment system to examine secondary disasters, a comprehensive environmental impact evaluation was conducted after the Wenchuan earthquake that occurred on 12 May 2008 in the Sichuan Province, China. This evaluation focused on several key environmental elements such as wastewater, drinking water, soil, solid waste, radiation, and ecosystem-level effects. As part of this assessment, an analysis of root causes and potential solutions was conducted for key issues such as population relocation and resettlement in temporary dwellings, recovery of environmental protection functions, industrial development strategies and production recovery. Methods for post-quake environmental assessment were developed, utilizing GIS-based techniques for spatial evaluation of primary and secondary disaster patterns. The goal of this exercise was the development of effective assessment methods that can be rapidly applied in a post-disaster situation to reduce and mitigate damage caused by secondary disasters, and facilitate the recovery of impaired environmental management structure and function. © 2011 Elsevier B.V.
AUTHOR KEYWORDS: Drinking water safety; Environmental risk evaluation; Secondary disasters; Solid waste risk; Wenchuan earthquake
INDEX KEYWORDS: Assessment methods; Environmental assessment; Environmental damage; Environmental impact evaluation; Environmental risks; Industrial development; Natural environments; Potential solutions; Root cause; Sichuan province; Wenchuan Earthquake; Damage detection; Disasters; Earthquakes; Environmental impact; Environmental management; Function evaluation; Nuclear reactors; Potable water; Radiation effects; Recovery; Solid wastes; Tsunamis; Secondary recovery; drinking water; polycyclic aromatic hydrocarbon; disaster management; earthquake damage; environmental impact assessment; environmental protection; environmental risk; GIS; Sichuan earthquake 2008; solid waste; article; biodiversity; China; earthquake; ecosystem; environmental impact; environmental management; environmental monitoring; geographic information system; incineration; priority journal; risk assessment; safety; soil analysis; soil pollution; solid waste management; waste water; water analysis; water quality; weathering; Conservation of Natural Resources; Ecosystem; Environment; Environmental Pollution; Geographic Information Systems; Risk Assessment; Sichuan
REFERENCES: China Popul Resour Environ, (2011); 
Integrated Assessment of Natural Disaster Risks in China, (2008); 
Natural Disaster Hotspots Case Studies, (2006); 
Proceedings of the 1998 Asian Conference on Remote Sensing, (1998); 
2nd Workshop on Application of Remote Sensing Technologies for Disaster Response, (2004); 
Environ Prot Sci, (2006); 
Proceedings of the 21st Asian Conference on Remote Sensing, (2000); 
Turker, Mustafa, Detection of collapsed buildings caused by the 1999 Izmit, Turkey earthquake through digital analysis of post-event aerial photographs, International Journal of Remote Sensing, 25, 21, pp. 4701-4714, (2004); 
undefined, (2008); 
undefined, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

An, H.
AUTHOR FULL NAMES: An, Hongchang (35145269600)
35145269600
Outcome-based earthquake early warning
(2012) Advanced Materials Research, 461, pp. 302 - 305, Cited 0 times.
DOI: 10.4028/www.scientific.net/AMR.461.302
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857484510&doi=10.4028%2Fwww.scientific.net%2FAMR.461.302&partnerID=40&md5=5349d6dff3a17ba4bbbfc44e7ff32d82

AFFILIATIONS: Department of Safety Engineering, China University of Labor Relations, Beijing, Beijing, China; School of Software, University of Technology Sydney, Sydney, NSW, Australia
ABSTRACT: Earthquake early warning (EEW) has been popular since 2007, but Wenchuan Earthquake occurred in China in 2008, Haiti Earthquake, Chile Earthquake and Yushu Earthquake occurred respectively in Haiti, Chile and China in 2010, and East Japan Earthquake occurred in Japan in 2011. This paper first illustrates Wenchuan Earthquake, and then introduces successful EEW cases such as Chile Earthquake and East Japan Earthquake and other unsuccessful EEW cases such as Haiti Earthquake and Yushu Earthquake. Furthermore, on the basis of principles of EEW, both outcome-based EEW and comprehensive outcome-based EEW are put forward and some EEW suggestions are given to China according to earthquake and its management in China. © (2012) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: China; Earthquake early warning; Knowing rate; Outcome-based approach; Right action rate
INDEX KEYWORDS: China; Earthquake early warning; Knowing rate; Outcome-based approach; Right action rate; Building materials; Structural design; Earthquakes
REFERENCES: undefined, (2012); 
undefined, (2012); 
undefined, (2012); 
undefined, (2012); 
undefined, (2012); 
undefined, (2012); 
Satriano, Claudio, Earthquake early warning: Concepts, methods and physical grounds, Soil Dynamics and Earthquake Engineering, 31, 2, pp. 106-118, (2011); 
Mudrack, Peter E., An outcomes-based approach to just world beliefs, Personality and Individual Differences, 38, 4, pp. 817-830, (2005); 
2011 International Symposium on Geospatial Information Technology Disaster Prevention and Reduction, (2011); 
2011 International Symposium on Geospatial Information Technology Disaster Prevention and Reduction, (2011)
SPONSORS: Wuhan Institute of Technology, Beijing Material Research Center, International Material Research Society
CONFERENCE NAME: 2012 International Conference on Building Materials and Structural Engineering, BMSE2012
CONFERENCE DATE: 2012-03-19 through 2012-03-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

An, H.
AUTHOR FULL NAMES: An, Hongchang (35145269600)
35145269600
Comparison of earthquake cases and China Public Safety Early Warning Information
(2012) Advanced Materials Research, 461, pp. 311 - 315, Cited 0 times.
DOI: 10.4028/www.scientific.net/AMR.461.311
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857460086&doi=10.4028%2Fwww.scientific.net%2FAMR.461.311&partnerID=40&md5=c3ec2396e183230bed9419f3c10617b5

AFFILIATIONS: Department of Safety Engineering, China University of Labor Relations, Beijing, Beijing, China; School of Software, University of Technology Sydney, Sydney, NSW, Australia
ABSTRACT: This paper illustrates China Public Safety Early Warning Information on the basis of comparing some successful and unsuccessful earthquake cases. Structure and functions of China Public Safety Early Warning Information are shown. Weaknesses of China Public Safety Early Warning Information are also pointed out. Some improvement of China Public Safety Early Warning Information is looked into. © (2012) Trans Tech Publications, Switzerland.
AUTHOR KEYWORDS: Early Warning; Earthquake; Haiti earthquake; Public Safety; Wenchuan earthquake
INDEX KEYWORDS: Early warning; Public safety; Wenchuan Earthquake; Building materials; Earthquakes; Structural design; Security of data
REFERENCES: undefined, (2012); 
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SPONSORS: Wuhan Institute of Technology, Beijing Material Research Center, International Material Research Society
CONFERENCE NAME: 2012 International Conference on Building Materials and Structural Engineering, BMSE2012
CONFERENCE DATE: 2012-03-19 through 2012-03-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Bayer, B., Kind, R., Hoffmann, M., Yuan, X., Meier, T.
AUTHOR FULL NAMES: Bayer, Bettina (58456219800); Kind, Rainer (7102843517); Hoffmann, M. (57199660521); Yuan, Xiaohui (55303904700); Meier, Thomas (35503432600)
58456219800; 7102843517; 57199660521; 55303904700; 35503432600
Tracking unilateral earthquake rupture by P-wave polarization analysis
(2012) Geophysical Journal International, 188 (3), pp. 1141 - 1153, Cited 17 times.
DOI: 10.1111/j.1365-246X.2011.05304.x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857048885&doi=10.1111%2Fj.1365-246X.2011.05304.x&partnerID=40&md5=fdf28304c1797870944e2d0286f1ee98

AFFILIATIONS: GFZ Helmholtz Centre for Geosciences, Potsdam, Germany; Freie Universität Berlin, Berlin, Berlin, Germany; Christian-Albrechts-Universität zu Kiel, Kiel, Schleswig-Holstein, Germany; RWE AG, Essen, Nordrhein-Westfalen, Germany
ABSTRACT: Rapid estimation of earthquake rupture propagation is essential to declare an early warning for tsunami-generating earthquakes. An increasing number of seismological methods have been developed to determine rupture parameters, such as length, velocity and propagation direction, especially since the occurrence of the Sumatra-Andaman earthquake that resulted in a devastating tsunami in the Indian Ocean region. Here, we present a new method to follow the rupture process in near real time by a polarization analysis of local and regional P phases that permits a faster determination of rupture properties than using teleseismic records. The new technique has the capability to provide detailed information in less than 10 min. Originally, the method stems from a single-station earthquake location method and is expanded here to monitor P-phase polarization variations through time. As the earthquake source moves away from the hypocentre, the backazimuth of an incoming P phase is expected to change accordingly. With polarization analysis we may be able to monitor the temporal change in P-wave backazimuth to follow the rupture process in near real time. Three component P phases are scanned to determine the azimuthal variation as a function of time. The backazimuth of a moving rupture front is determined by the first eigenvector of the covariance matrix. The linearity of the particle motion is used as a measure of the quality of the data. Seismic stations at local and regional distances () are used. We tested the new method with a theoretical simulation and observed seismograms of the Sumatra-Andaman earthquake (2004 December 26, M <inf>w</inf>= 9.3), and we were able to follow the rupture for the first 200 s. For larger ruptures, stations at more than 30° epicentral distances would be required. The method is also successfully applied to the Wenchuan earthquake (2008 May 12, M <inf>w</inf>= 8.0). © 2012 The Authors Geophysical Journal International © 2012 RAS.
AUTHOR KEYWORDS: Early warning; Earthquake source observations; Time-series analysis
INDEX KEYWORDS: Azimuthal variations; Early warning; Earthquake location; Earthquake rupture; Earthquake source; Earthquake source observations; Epicentral distances; Function of time; Hypocentre; Indian ocean regions; Near-real time; Particle motions; Polarization analysis; Propagation direction; Rapid estimation; Rupture parameters; Rupture process; Rupture properties; Seismic station; Sumatra-Andaman earthquake; Teleseismic; Temporal change; Theoretical simulation; Three component; Tsunami-generating earthquakes; Wenchuan Earthquake; Covariance matrix; Harmonic analysis; Polarization; Seismic waves; Earthquakes; computer simulation; data quality; early warning system; earthquake hypocenter; earthquake rupture; eigenvalue; estimation method; matrix; observational method; P-wave; seismic data; seismic source; seismology; Sumatra earthquake 2004; teleseismic wave; time series analysis; tsunami; Indian Ocean
REFERENCES: Ammon, Charles J., Rupture process of the 2004 Sumatra-Andaman earthquake, Science, 308, 5725, pp. 1133-1139, (2005); 
Frohlich, Cliff, Single-station location of seismic events: A review and a plea for more research, Physics of the Earth and Planetary Interiors, 113, 1-4, pp. 277-291, (1999); 
Guatteri, Mariagiovanna, On the variation of slip direction during earthquake rupture: Supporting and conflicting evidence from the 1989 Loma Prieta earthquake, Bulletin of the Seismological Society of America, 86, 6, pp. 1935-1951, (1996); 
Bull Seismol Soc Am, (1986); 
Ishii, Miaki, Extent, duration and speed of the 2004 Sumatra-Andaman earthquake imaged by the Hi-Net array, Nature, 435, 7044, pp. 933-936, (2005); 
Jurkevics, Andrejs, Polarization analysis of three-component array data, Bulletin of the Seismological Society of America, 78, 5, pp. 1725-1743, (1988); 
Fojtíková, Lucia, Tracking the rupture of the Mw = 9.3 Sumatra earthquake over 1,150 km at teleseismic distance, Nature, 435, 7044, pp. 937-939, (2005); 
Time Sequence Analysis in Geophysics, (1981); 
Kennett, Brian L.N., Traveltimes for global earthquake location and phase identification, Geophysical Journal International, 105, 2, pp. 429-465, (1991); 
Lomax, Anthony J., The use of spherical coordinates in the interpretation of seismograms, 93, 3, pp. 405-412, (1988)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Ni, H., Zheng, W.M., Tie, Y., Su, P.C., Tang, Y.Q., Xu, R.G., Wang, D.W., Chen, X.Y.
AUTHOR FULL NAMES: Ni, Huayong (36548802400); Zheng, Wanmo (36009664800); Tie, Yongbo (26656325300); Su, Pengcheng (55234493100); Tang, Y. Q. (48161911600); Xu, Ruge (48161947100); Wang, Dewei (56997706600); Chen, X. Y. (48160941800)
36548802400; 36009664800; 26656325300; 55234493100; 48161911600; 48161947100; 56997706600; 48160941800
Formation and characteristics of post-earthquake debris flow: A case study from Wenjia gully in Mianzhu, Sichuan, SW China
(2012) Natural Hazards, 61 (2), pp. 317 - 335, Cited 45 times.
DOI: 10.1007/s11069-011-9914-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856390335&doi=10.1007%2Fs11069-011-9914-5&partnerID=40&md5=ebffdd0f00620396b67211925d72d767

AFFILIATIONS: Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: During the three flood seasons following the Wenchuan earthquake in 2008, two catastrophic groups of debris flow events occurred in the earthquake-affected area: the 2008-9-24 debris flow events, which had a serious impact on rebuilding; and the 2010-8-13/14 debris flow events, which destroyed much of the progress made in rebuilding. The Wenjia gully is a typical post-earthquake debris flow gully and at least five debris flows have occurred there. As far as the 2010-8-13 debris flow is concerned, the deposits of the Wenjia gully debris flow reached a volume of 3. 1 × 10 6 m 3 in volume and hundreds of newly built houses were buried. This study took the Wenjia gully debris flow as an example and discussed the formation and characteristics of post-earthquake debris flow on the basis of field investigations and a remote sensing interpretation. The conclusions drawn from the investigation and analysis were as follows: (1) Post-earthquake debris flows were a joint result of both the earthquake and heavy rainfall. (2) Gully incision and loose material provision are key processes in the initiation and occurrence of debris flows and a cycle can be presented as the following process: runoff-erosion-collapse-engulfment-debris flow-further erosion-further collapse-further engulfment-debris flow enlargement. (3) The amount of rainfall that triggered debris flows from the Wenjia gully was significantly less than the average daily rainfall, while the intraday rainfall threshold decreased by at least 23. 3%. (4) The occurrence mechanism of Wenjia gully debris flow was an erosion type and there was a positive relationship between debris flow magnitude and rainfall, which fitted an exponential model. (5) There were five representative characteristics of Wenjia gully debris flow: the long duration of the occurring process; the long distance of deposition chain conversion during the process of damage; magnification in the scale of debris flow; and the high frequency of debris flow events. © 2011 Springer Science+Business Media B.V.
AUTHOR KEYWORDS: Characteristic; Debris flow; Formation mechanism; Wenchuan earthquake; Wenjia gully
INDEX KEYWORDS: catastrophic event; debris flow; environmental impact; field method; formation mechanism; gully; gully erosion; incised valley; rainfall; remote sensing; runoff; Sichuan earthquake 2008; trigger mechanism; China; Mianzhu; Sichuan
REFERENCES: Berti, Matteo, Experimental evidences and numerical modelling of debris flow initiated by channel runoff, Landslides, 2, 3, pp. 171-182, (2005); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Cannon, Susan H., Storm rainfall conditions for floods and debris flows from recently burned areas in southwestern Colorado and southern California, Geomorphology, 96, 3-4, pp. 250-269, (2008); 
Chen, Hongey, Recent rainfall-induced landslides and debris flow in northern Taiwan, Geomorphology, 77, 1-2, pp. 112-125, (2006); 
Chen, Ningsheng, The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area, Journal of Mountain Science, 6, 4, pp. 362-372, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Curry, Robert R., Observation of alpine mudflows in the Tenmile range, central Colorado, Bulletin of the Geological Society of America, 77, 7, pp. 771-776, (1966); 
Fiorillo, Francesco, Rainfall induced debris flows in pyroclastic deposits, Campania (southern Italy), Engineering Geology, 75, 3-4, pp. 263-289, (2004); 
Godt, Jonathan W., Alpine debris flows triggered by a 28 July 1999 thunderstorm in the central Front Range, Colorado, Geomorphology, 84, 1-2, pp. 80-97, (2007); 
Guzzetti, Fausto, The rainfall intensity-duration control of shallow landslides and debris flows: An update, Landslides, 5, 1, pp. 3-17, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Xiwei, X., Dai, F., Xiao, J., Tan, X.-B., Yuan, R.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Xiwei, Xu (8246843900); Dai, Fuchu (7102055666); Xiao, Jianzhang (7402564381); Tan, Xinbin (35184143700); Yuan, Renmao (7202708506)
35184309900; 8246843900; 7102055666; 7402564381; 35184143700; 7202708506
Landslide hazard mapping using GIS and weight of evidence model in Qingshui River watershed of 2008 Wenchuan earthquake struck region
(2012) Journal of Earth Science, 23 (1), pp. 97 - 120, Cited 149 times.
DOI: 10.1007/s12583-012-0236-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862907888&doi=10.1007%2Fs12583-012-0236-7&partnerID=40&md5=1b8e03e50c333a02a9484f42127b9978

AFFILIATIONS: Key Laboratory of Active Tectonics and Volcano, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Tens of thousands of landslides were triggered by May 12, 2008 earthquake over a broad area. The main purpose of this article is to apply and verify earthquake-triggered landslide hazard analysis techniques by using weight of evidence modeling in Qingshui (Chinese source) River watershed, Deyang (Chinese source) City, Sichuan (Chinese source) Province, China. Two thousand three hundred and twenty-one landslides were interpreted in the study area from aerial photographs and multi-source remote sensing imageries post-earthquake, verified by field surveys. The landslide inventory in the study area was established. A spatial database, including landslides and associated controlling parameters that may have influence on the occurrence of landslides, was constructed from topographic maps, geological maps, and enhanced thematic mapper (ETM+) remote sensing imageries. The factors that influence landslide occurrence, such as slope angle, aspect, curvature, elevation, flow accumulation, distance from drainages, and distance from roads were calculated from the topographic maps. Lithology, distance from seismogenic fault, distance from all faults, and distance from stratigraphic boundaries were derived from the geological maps. Normalized difference vegetation index (NDVI) was extracted from ETM+ images. Seismic intensity zoning was collected from Wenchuan (Chinese source) Ms8.0 Earthquake Intensity Distribution Map published by the China Earthquake Administration. Landslide hazard indices were calculated using the weight of evidence model, and landslide hazard maps were calculated from using different controlling parameters cases. The hazard map was compared with known landslide locations and verified. The success accuracy percentage of using all 13 controlling parameters was 71.82%. The resulting landslide hazard map showed five classes of landslide hazard, i. e., very high, high, moderate, low, and very low. The validation results showed satisfactory agreement between the hazard map and the existing landslides distribution data. The landslide hazard map can be used to identify and delineate unstable hazard-prone areas. It can also help planners to choose favorable locations for development schemes, such as infrastructural, buildings, road constructions, and environmental protection. © 2012 China University of Geosciences and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Geographic Information Systems (GIS); landslide hazard mapping; landslides; weight of evidence; Wenchuan earthquake
INDEX KEYWORDS: accuracy assessment; database; GIS; landslide; mapping method; NDVI; numerical model; remote sensing; Sichuan earthquake 2008; spatial analysis; spatial data; watershed
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Alexander, David E., A brief survey of GIS in mass-movement studies, with reflections on theory and methods, Geomorphology, 94, 3-4, pp. 261-267, (2008); 
Anbalagan, Rathinam, Landslide hazard evaluation and zonation mapping in mountainous terrain, Engineering Geology, 32, 4, pp. 269-277, (1992); 
Arora, Manoj Kumar, An artificial neural network approach for landslide hazard zonation in the bhagirathi (ganga) valley, himalayas, International Journal of Remote Sensing, 25, 3, pp. 559-572, (2004); 
Geophysical Research Abstracts, (2008); 
Bai, Shibiao, GIS-Based and Data-Driven Bivariate Landslide-Susceptibility Mapping in the Three Gorges Area, China Project supported by the National Natural Science Foundation of China (Nos. 40801212 and 49971064), the Foundation for China Geological Survey (No. 200316000035), the Natural Science Foundation of Jiangsu Higher Education Institutions of China (No. 06KJB170063), Pedosphere, 19, 1, pp. 14-20, (2009); 
Landslide Hazard Mapping by Multivariate Statistics Comparison of Methods and Case Study in the Spanish Pyrenees, (2002); 
Computer Methods in the Geosciences, (1994); 
Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Caniani, Donatella, Neural networks and landslide susceptibility: A case study of the urban area of Potenza, Natural Hazards, 45, 1, pp. 55-72, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, S.R., Shi, J.S., Wang, H.B.
AUTHOR FULL NAMES: Wu, Shuren (15744734100); Shi, Jusong (7404495701); Wang, Huabin (57191848944)
15744734100; 7404495701; 57191848944
Analysis of activity intensity for landslides triggered by the Wenchuan earthquake, Sichuan Province, China
(2012) Environmental Earth Sciences, 65 (4), pp. 1021 - 1028, Cited 7 times.
DOI: 10.1007/s12665-011-0952-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856315014&doi=10.1007%2Fs12665-011-0952-9&partnerID=40&md5=b1e65871b48ccc6260f35a440de9737d

AFFILIATIONS: Ministry of Natural Resources of the People's Republic of China, Beijing, China; Geomechanics Institute of China Geological Sciences, Beijing, China; School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan, Hubei, China; Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan, Hubei, China
ABSTRACT: Activity intensity for swarms of landslides is a key issue in geohazard predictions and assessment at a regional scale. From reviewed literatures, little work has been carried out on the description of activity intensity and its evaluation indicator system. On May, 12, 2008, the great Wenchuan earthquake triggered numerous landslides and debris flows. To evaluate the activity intensity of coseismic landslides, a variety of regional slides, debris flows and rock falls was investigated concerning the geological characteristics, damage to property, and life loss. After the interpretation using high-resolution imagery to map landslide inventories, they were statistically analyzed within the scope of Geographical Information Systems, noting areal density. The maximum areal density was thus obtained for seismically triggered landslides. Combined analyses in these areas show that the maximum value of areal density can be described as the activity intensity of regional landslides. The activity intensity can be categorized into eight levels from zero to seven in terms of areal density of landslides. It was noted that the activity intensity for landslides in the area hit by Wenchuan earthquake was classified into Level 7, illustrating that this area was extremely damaged by these coseismic geohazards. Following this classification, the center of the highest intensity was located on the banks of the Minjiang River near the epicenter of the earthquake, and in the vicinity of a seismic fault at Hanwang Town of Mianzhu City. Meanwhile, the banks of the Jian River and the northeast river at Nanba Town in Pingwu County were classified into Level 6. It was significantly shown that the activity intensity obviously weakens from the boundary of a coseismic fault zone to its interior. Finally, causes of triggering large numbers of landslides were interpreted, and their regional distribution was analyzed for the earthquake event. © 2011 Springer-Verlag.
AUTHOR KEYWORDS: Activity intensity; Earthquake-triggered landslide; Indicator of geohazard; Maximum areal density; Wenchuan earthquake
INDEX KEYWORDS: Areal densities; Combined analysis; Debris flows; Earthquake events; Fault zone; Geographical Information System; Geohazards; Geological characteristics; High resolution imagery; ITS evaluation; Maximum values; Minjiang River; Regional distribution; Regional scale; Rockfalls; Seismic faults; Sichuan province; Wenchuan Earthquake; Debris; Geographic information systems; Landslides; Rivers; Rock bursts; Earthquakes; coseismic process; debris flow; earthquake damage; earthquake epicenter; fault zone; GIS; hazard assessment; landslide; literature review; prediction; rockfall; Sichuan earthquake 2008; socioeconomic impact; China; Sichuan
REFERENCES: Landslide News, (1991); 
Cardinali, Mauro, A geomorphological approach to the estimation of landslide hazards and risks in Umbria, Central Italy, Natural Hazards and Earth System Sciences, 2, 1-2, pp. 57-72, (2002); 
Deschamps, Anne E., The Campania-Lucania (southern Italy) earthquake of 23 November 1980, Earth and Planetary Science Letters, 62, 2, pp. 296-304, (1983); 
Investigation of Sediment Erosion Induced by the May 12 Wenchuan Earthquake, (2008); 
Earthquake Spectra, (1995); 
Harp, Edwin L., Landslides triggered by the 1994 Northridge, California, earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S319-S332, (1996); 
Analysis on the Distribution of Secondary Geological Hazards Induced by the Wenchuan Earthquake and Its Impacts on Reconstruction, (2008); 
International Workshop on Annual Commemoration of Chi Chi Earthquake, (2000); 
Landslide Risk Assessment, (1997); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cheng, C., Bai, S.B., Zhou, P.
AUTHOR FULL NAMES: Cheng, Chen (55662217700); Bai, Shibiao (15830966700); Zhou, Pinggen (25931277700)
55662217700; 15830966700; 25931277700
Recognition of earthquake-triggered landslides using support vector machines
(2012), pp. 525 - 528, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071026917&partnerID=40&md5=69f96c0de3d84841e1d576aa8fe2f6e3

AFFILIATIONS: School of Geography Science, Nanjing Normal University, Nanjing, Jiangsu, China; China Institute of Geo-Environment Monitoring, Beijing, Beijing, China
ABSTRACT: Earthquake triggered landslides are very common throughout the world. The May 12 2008, M 7.9 Wenchuan earthquake in eastern Sichuan Province of China triggered tens of thousands of rock falls, rock slides, rock avalanches, and deep, complex landslides. The earthquake-triggered landslide inventory for this event is an important basis for the preparation of landslide susceptibility and risk maps. In general, landslide deposits were clearly identified at the foot of the slope covering roads, other infrastructure, or extending into rivers or streams. Also landslide run-out and debris movement paths could clearly be observed from the remote-sensing data. However, it is still difficult to directly determine earthquake-triggered landslide automatically and accurately. Support Vector Machines (SVM) are a very attractive approach to robustly analyse high dimensional data. An important task of the methodology consists of developing input-output spaces for supervised learning of the model. The input space includes morphometric indices, such as elevation, slope data, plan curvature, profile curvatures and texture data in association with the spectral information from the multispectral remote-sensing images. The entire procedure can be formulated as a supervised classification and automated learning methodology. Then use the Change Detection Statistics method to recognize the earthquake triggered landslides. The study area is in the part of Qingchuan county at the northern edge of the Sichuan basin, an area severely hit by the Wenchuan earthquake. The remote-sensing images include ALOS images before and after the Wenchuan earthquake. The landslide recognition results were validated by field investigation. © 2012 Taylor & Francis Group, London.
INDEX KEYWORDS: Clustering algorithms; Earthquakes; Learning systems; Maps; Remote sensing; Rock bursts; Space optics; Support vector machines; Textures; Earthquake-triggered landslides; Field investigation; High dimensional data; Landslide susceptibility; Multispectral remote sensing image; Remote sensing images; Spectral information; Supervised classification; Landslides
REFERENCES: Brenning, Alexander, Spatial prediction models for landslide hazards: Review, comparison and evaluation, Natural Hazards and Earth System Sciences, 5, 6, pp. 853-862, (2005); 
Learning from Data Concepts Theory and Methods, (1998); 
Earth Science Frontiers, (2007); 
Scientia Geographica Sinica, (2008); 
He, Yuanrong, Application of fuzzy support vector machine to landslide risk assessment, Journal of Natural Disasters, 18, 5, pp. 107-112, (2009); 
Yǐlmaz, Iśik Şı, Comparison of landslide susceptibility mapping methodologies for Koyulhisar, Turkey: Conditional probability, logistic regression, artificial neural networks, and support vector machine, Environmental Earth Sciences, 61, 4, pp. 821-836, (2010); 
Science of Surveying and Mapping, (2008); 
Kanevski, Mikhail, Machine learning for spatial environmental data: Theory, applications and software, pp. 1-371, (2009); 
Using Decision Tree and Svm to Study the Method of Rs Image Classification D, (2009); 
Journal of Zhejiang University Science Edition, (2003)
PUBLISHER: CRC Press/Balkema
CONFERENCE NAME: 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
CONFERENCE DATE: 2012-06-02 through 2012-06-08
CONFERENCE LOCATION: Banff
CONFERENCE CODE: 228189
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ma, X., Wu, Z., Peng, H., Ma, T.
AUTHOR FULL NAMES: Ma, Xiaojing (38862246100); Wu, Zhongliang (9536539700); Peng, Hanshu (36448530000); Ma, Tengfei (7402783771)
38862246100; 9536539700; 36448530000; 7402783771
Challenging the limit of eew: A scenario of eews application based on the lessons of the 2008 wenchuan earthquake
(2012), pp. 11 - 22, Cited 2 times.
DOI: 10.1142/9789814405775_0002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974574935&doi=10.1142%2F9789814405775_0002&partnerID=40&md5=7e15a0b403d6b387a707fb3962d6d78d

AFFILIATIONS: China Earthquake Administration, Beijing, China; Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Based on the lessons and experiences of the 2008 Wenchuan earthquake, we discussed a scenario of a special type of earthquake early warning system (EEWS), in which the rupture extent is larger than the “blind zone” of EEWS. We used the strong motion recordings and seismic recordings of the Wenchuan earthquake for determining the first-3-seconds EEW magnitude/s and for the analysis of the “EEW schedule”. It is shown that near-source recordings are able to provide the first-3-seconds τc magnitude, while the τc magnitude tends to be smaller for stations near to the epicenter; Pd magnitude tends to underestimate the earthquake. Significantly useful warning time would be available, if an EEWS were deployed on site. © 2012 by World Scientific Publishing Co. Pte. Ltd. All rights reserved.
REFERENCES: Alçik, Hakan A., A study on warning algorithms for Istanbul earthquake early warning system, Geophysical Research Letters, 36, 5, (2009); 
Allen, Richard M., The potential for earthquake early warning in Southern California, Science, 300, 5620, pp. 786-789, (2003); 
Allen, Richard M., Probabilistic Warning Times for Earthquake Ground Shaking in the San Francisco Bay Area, Seismological Research Letters, 77, 3, pp. 371-376, (2006); 
Wenchuan Earthquake of 2008 Anatomy of A Disaster, (2011); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Hsiao, Naichi, Development of earthquake early warning system in Taiwan, Geophysical Research Letters, 36, 5, (2009); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
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Li, Xiaojun, Preliminary analysis of strong-motion recordings from the magnitude 8.0 Wenchuan, China, Earthquake of 12 May 2008, Seismological Research Letters, 79, 6, pp. 844-854, (2008); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988)
PUBLISHER: World Scientific Publishing Co.
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Yin, Y., Sun, P., Zhang, M., Xing, A., Wang, M.
AUTHOR FULL NAMES: Yin, Y. (59438084800); Sun, Ping (26428429500); Zhang, Ming (57184521900); Xing, Aiguo (7004119237); Wang, Meng (56005261600)
59438084800; 26428429500; 57184521900; 7004119237; 56005261600
Characteristics of landslides triggered by the 2008 Wenchuan Earthquake, Sichuan, China
(2012), pp. 23 - 30, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908375960&partnerID=40&md5=5292a1356753cb6e2b347ca13751297b

AFFILIATIONS: CGS, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; China University of Geosciences, Wuhan, Hubei, China; Shanghai Jiao Tong University, Shanghai, China; Sichuan Geological Survey, Chengdu, Sichuan, China
ABSTRACT: More than 10 thousand landslides were triggered by the Wenchuan Earthquake Ms8.0 on May 12, 2008. Most occurred within 10 km of the main central fault of the Longmengshan. The largest, the Daguangbao rockslide, is investigated through multi-phase high resolution remote sensing images before and after the earthquake. The slide has a length of 4.5 km, a width of 1,700–2,200 m, a thickness of up to 580 m and an estimated volume of 1.2 billion m3.The effects of the earthquake trigger was simulated using FLAC3D, which inferred a complex failure process where the lower part of the slide mass first slid along a rock mass bedding layer, followed by the failure of the upper part of the slide mass. Within the Wenchuan earthquake meizoseismal area (area of maximum damage), the phenomenon is common to landslides where the vertical component of seismic force is predominant. The model results show that the vertical peak acceleration led to distinct reductions in the slope stability factor, and played a significant role in the failure. In addition, large-scale tensile failure at the back of the rock avalanche was generated by the large vertical peak acceleration, and demonstrated to be a key reason for the triggering of a large number of rock avalanches and rockfalls. The large vertical acceleration is also the apparent reason for soil and rock masses becoming airborne. Large-scale wind tunnel testing was also conducted to examine an air-cushion effect for long run-out rapid rock avalanches triggered by the Wenchuan earthquake. The results show that the reach achieved under the added aerodynamics is increased by nearly 50% compared to a normal state (i.e., no air cushion effect). Thus, the total run-out under an air cushion effect is increased by one third compared to the conventional estimation under the normal state. © 2012 Taylor & Francis Group, London.
INDEX KEYWORDS: Air cushioning; Landslides; Remote sensing; Rock bursts; Rock mechanics; Rocks; Wind tunnels; 2008 wenchuan earthquakes; High resolution remote sensing images; Meizoseismal areas; Vertical accelerations; Vertical component; Vertical peak acceleration; Wenchuan Earthquake; Wind-tunnel testing; Earthquakes
REFERENCES: Collier, C. J., A procedure for combining vertical and horizontal seismic action effects, Journal of Earthquake Engineering, 5, 4, pp. 521-539, (2001); 
Elnashai, Amr S., Procedure and spectra for analysis of rc structures subjected to strong vertical earthquake loads, Journal of Earthquake Engineering, 1, 1, pp. 121-155, (1997); 
Hsü, Kenneth Jinghwa, Catastrophic debris streams (sturzstroms) generated by rockfalls, Bulletin of the Geological Society of America, 86, 1, pp. 129-140, (1975); 
Journal of Engineering Geology, (2008); 
Huang, Runqiu, The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake, May 12, 2008, China, Landslides, 9, 1, pp. 131-142, (2012); 
Landslides in Progress, (2004); 
Landslide and Avalanches Natural Phenomena, (1978); 
Earthquake Engineering and Engineering Vibration, (1983); 
Shreve, Ronald L., Leakage and fluidization in air-layer lubricated avalanches, Bulletin of the Geological Society of America, 79, 5, pp. 653-658, (1968); 
Sun, Ping, Does vertical seismic force play an important role for the failure mechanism of rock avalanches? A case study of rock avalanches triggered by the Wenchuan earthquake of May 12, 2008, Sichuan, China, Environmental Earth Sciences, 66, 5, pp. 1285-1293, (2012)
PUBLISHER: CRC Press/Balkema
CONFERENCE NAME: 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
CONFERENCE DATE: 2012-06-02 through 2012-06-08
CONFERENCE LOCATION: Banff
CONFERENCE CODE: 228189
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Bai, S.B., Thiebes, B., Wang, J., Zhou, P.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Thiebes, Benni (55668276300); Wang, Jian (55491249300); Zhou, Pinggen (25931277700)
15830966700; 55668276300; 55491249300; 25931277700
Pre-conditioning factors for rainfall and earthquake-triggered landslides
(2012), pp. 501 - 505, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884798807&partnerID=40&md5=f1057228ee60ce8e7d9401fd580036eb

AFFILIATIONS: School of Geography Science, Nanjing Normal University, Nanjing, Jiangsu, China; China Institute of Geo-Environment Monitoring, Beijing, Beijing, China
ABSTRACT: Wudu county in north-western China frequently experiences large-scale landslide occurrences. High-magnitude earthquakes and heavy rainfall events are the dominant landslide triggering mechanisms in the region. The aim of this research is to analyze the influence of landslide pre-conditioning factors on landslide distribution. For this, the number of density of landslides for several potentially pre-conditioning factors were analyzed within a GIS. Two point-based landslide inventories were utilized, i.e., one containing rainfall-triggered landslides between 1995 and 2003, and the other slope failures triggered by the 2008 Wenchuan earthquake. The preliminary results demonstrate the great influence of lithology for both rainfall and earthquake-triggered slope failures. In particular conglomerated, siltstones and mud-stone were examined to have a very high landslide density. Other important pre-conditioning factors for landslides are the distance to rivers and roads. Interestingly, earthquakes-triggered landslides have been observed to be occurring significantly more frequently on relatively flat areas and very steep locations than rainfall-triggered landslides. Further research will concentrate on the validation of the preliminary results in the field and the integration of landslide affected areas and landslide volumes in the analysis. Ultimately, the findings will facilitate regional landslide hazard management and spatial planning. © 2012 Taylor & Francis Group, London.
INDEX KEYWORDS: Earthquakes; Lithology; Rain; 2008 wenchuan earthquakes; Earthquake-triggered landslides; Landslide distributions; Landslide hazard management; Landslide inventories; Large-scale landslides; Pre-conditioning; Triggering mechanism; Landslides
REFERENCES: Proceedings of the International Conference Mountain Risks Bringing Science to Society, (2010); 
Engineering Geological Problems Study of Gansu Section of Lanzhou Haikou Highway, (2006); 
2010 International Conference on Remote Sensing Icrs, (2010); 
Cruden, David M., Landslide types and processes, Special Report - National Research Council, Transportation Research Board, 247, pp. 36-75, (1996); 
Michael J. Crozier, Michael J., A Review of Scale Dependency in Landslide Hazard and Risk Analysis, pp. 75-138, (2012); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011); 
J of Institute of Disaster Prevention, (2010); 
Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Journal of Mountain Science, (2007); 
Chinese Journal of Geological Hazard and Control, (2004)
PUBLISHER: CRC Press/Balkema
CONFERENCE NAME: 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
CONFERENCE DATE: 2012-06-02 through 2012-06-08
CONFERENCE LOCATION: Banff
CONFERENCE CODE: 228189
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, W., Huang, R., Xu, Q.
AUTHOR FULL NAMES: Li, Weile (25936551300); Huang, Runqiu (55835407700); Xu, Qiang (56506033600)
25936551300; 55835407700; 56506033600
Gis-based logistic regression for landslide susceptibility mapping of the 2008 Wenchuan earthquake region, China
(2012), 2, pp. 1839 - 1844, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84882932656&partnerID=40&md5=9c04d7bcd31fa32197490394af4e43b0

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Ms 8.0 May 12, 2008 Wenchuan earthquake triggered tens of thousands landslides over a broad region in the Longmen mountain area, west of the Sichuan basin. The widespread landslides have caused serious casualties and property losses, and will poses a great threat to post-earthquake reconstruction. One of main solutions to the landslide hazards is avoidance of higher danger areas. For the purpose, it is directed to prepare a landslide susceptibility map. A spatial database, which inventoried 16,277 landslides, was developed by interpretation of multi-temporal and multi-resolution remote sensing images (Aerial imagery, Cartosat1, ALOS and ASTER satellite imagery, etc.). While the landslides scattered in the region, covering an area of about 100,000 km2, they were highly concentrated in certain areas with special geomorphic and geologic settings. The correlation between landslides distribution and the influencing parameters including distance from co-seismic fault, lithology, slope gradient, elevation, PGA, distance from drainage, were analyzed by statistical tool and the weight of each parameter was determined using a binomial logistic regression model. The result indicated that slope gradient and distance from co-seismic faults have the most significant impact on co-seismic landslide. Distance from drainage and elevation have a more significant contribution than lithology and PGA. Landslide susceptibility was mapped based on spatial overlay analysis using ARCGIS software. The study area was classified into five categories of landslide susceptibility: Very low, low, medium, high and very high. The high and very high susceptibility zones make up 15.6% of the total study area mainly along the co-seismic fault. The susceptibility map is expected to be a major guidance at the planning stage in the rebuilding process. © 2012 Taylor & Francis Group, London.
INDEX KEYWORDS: Aerial photography; Antennas; Earthquakes; Faulting; Geographic information systems; Lithology; Logistic regression; Remote sensing; Satellite imagery; Statistical mechanics; 2008 wenchuan earthquakes; Binomial logistic regressions; Influencing parameters; Landslide susceptibility; Landslide susceptibility mapping; Multi-resolution remote sensing; Post-earthquake reconstruction; Seismic landslides; Landslides
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Chen, Zhaohua, Landslide hazard mapping using logistic regression model in Mackenzie Valley, Canada, Natural Hazards, 42, 1, pp. 75-89, (2007); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
Journal of Engineering Geology, (2008); 
Kamp, Ulrich, GIS-based landslide susceptibility mapping for the 2005 Kashmir earthquake region, Geomorphology, 101, 4, pp. 631-642, (2008); 
Lee, Chyityi Tyi, Statistical approach to earthquake-induced landslide susceptibility, Engineering Geology, 100, 1-2, pp. 43-58, (2008); 
Soeters, Robert, Slope instability recognition, analysis, and zonation, Special Report - National Research Council, Transportation Research Board, 247, pp. 129-177, (1996); 
Su, Fenghuan, Susceptibility assessment of landslides caused by the Wenchuan earthquake using a logistic regression model, Journal of Mountain Science, 7, 3, pp. 234-245, (2010); 
Görüm, Tolga, Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake, Geomorphology, 133, 3-4, pp. 152-167, (2011)
PUBLISHER: CRC Press/Balkema
CONFERENCE NAME: 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
CONFERENCE DATE: 2012-06-02 through 2012-06-08
CONFERENCE LOCATION: Banff
CONFERENCE CODE: 228189
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wu, L., Qin, K., Liu, S.-J.
AUTHOR FULL NAMES: Wu, Lixin (55714061400); Qin, Kai (35220430700); Liu, Shanjun (54409091600)
55714061400; 35220430700; 54409091600
GEOSS-based thermal parameters analysis for earthquake anomaly recognition
(2012) Proceedings of the IEEE, 100 (10), art. no. 6166844, pp. 2891 - 2907, Cited 107 times.
DOI: 10.1109/JPROC.2012.2184789
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866558459&doi=10.1109%2FJPROC.2012.2184789&partnerID=40&md5=b62acf0e5410f6e4049411f675366d20

AFFILIATIONS: Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing, China; College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing, Beijing, China; Institute for Geo-informatics and Digital Mine Research, Northeastern University, Shenyang, Liaoning, China
ABSTRACT: Although earthquakes are difficult to be predicted because of the complexity of the Earth system and the uncertainty of seismogenic processes, GEOSS provides multiple sources of observation data and brings a possibility to extract a thermal anomaly that would have a significant effect on earthquake prediction. Referring to the analysis on the lithosphere-coversphere-atmosphere (LCA) coupling due to stress enhancement in seismogenic zone, six thermal parameters, including surface latent heat flux (SLHF), thermal infrared radiation (TIR), outgoing longwave radiation (OLR), diurnal temperature range (DTR), atmospheric temperature, and skin temperature, are selected for GEOSS-based earthquake anomaly recognition (EAR). The inherent relations between the six thermal parameters are preliminarily introduced in consideration of possible LCA coupling. With overquantity, quasi-synchronism, and geo-consistency being defined as three rules for data mining, a deviation-time-space-thermal (DTS-T) EAR method as well as its procedures are developed in this paper. With 2008 M7.3 Yutian earthquake, China, 2008 M8.0 Wenchuan earthquake, China, and 2010 M7.1 Christchurch earthquake, New Zealand, being examples of tectonic earthquakes, the technical procedures of DTS-T method are demonstrated, which show that the obtained compositive thermal anomaly has a significant effect on earthquake prediction. © 2012 IEEE.
AUTHOR KEYWORDS: Earthquake; remote sensing; temperature
INDEX KEYWORDS: Atmospheric temperature; Data mining; Earthquakes; Heat flux; Infrared radiation; Life cycle; Remote sensing; Temperature; Diurnal temperature ranges; Earthquake anomalies; Earthquake prediction; Outgoing longwave radiation; Seismogenic process; Surface latent heat fluxes; Tectonic earthquakes; Thermal infrared radiations; Forecasting
REFERENCES: Earthquakes and Other Earth Movements, (1886); 
Sugisaki, Ryuichi, Geochemical features of gases and rocks along active faults, Geochemical Journal, 14, 3, pp. 101-112, (1980); 
Journal of Seismological Research, (1984); 
Shimamura, Hideki, Groundwater microtemperature in earthquake regions, Pure and Applied Geophysics, 122, 6, pp. 933-946, (1984); 
Izvestiya Earth Physics, (1986); 
Mogi, Kiyoo, Temperature changes in an artesian spring at Usami in the Izu Peninsula (Japan) and their relation to earthquakes, Tectonophysics, 159, 1-2, pp. 95-108, (1989); 
Asteriadis, G., Pre-seismic responses of underground water level and temperature concerning a 4.8 magnitude earthquake in Greece on October 20, 1988, Tectonophysics, 170, 1-2, pp. 165-169, (1989); 
Proc Acad Sci USSR, (1988); 
Chinese Science Bulletin, (1990); 
Chinese Science Bulletin, (1991)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Gong, J.H., Yue, Y.J., Zhu, J., Wen, Y., Li, Y., Zhou, J., Wang, D., Yu, C.
AUTHOR FULL NAMES: Gong, Jianhuaa Hua (59157665500); Yue, Yujuan (36135093400); Zhu, Jun (56518432000); Wen, Yuming (36615935800); Li, Yi (55983807900); Zhou, Jieping (14324017900); Wang, Dongchuan (34873779300); Yu, Caihong (55268269900)
59157665500; 36135093400; 56518432000; 36615935800; 55983807900; 14324017900; 34873779300; 55268269900
Impacts of the Wenchuan Earthquake on the Chaping River upstream channel change
(2012) International Journal of Remote Sensing, 33 (12), pp. 3907 - 3929, Cited 17 times.
DOI: 10.1080/01431161.2011.636767
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863057261&doi=10.1080%2F01431161.2011.636767&partnerID=40&md5=2f3b147b6e1d23d6d5003ca708cb4ca3

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; Water and Environmental Research Institute, Unibetsedȧt Guåhan, Mangilao, Guam; Tianjin Institute of Urban Construction, Tianjin, Tianjin, China
ABSTRACT: The Wenchuan Earthquake, measuring magnitude 8.0 on the Richter scale, occurred on 12 May 2008 in Sichuan, southwest China and caused over 87 000 casualties. Geological disasters such as debris flows and landslides caused by the Wenchuan Earthquake were severe. Several high-risk dammed lakes formed in the Chaping River basin of An'xian County, Sichuan, China, which is located in the earthquake zone, caused great changes in river morphology and brought great danger to the people and properties in the river downstream. Channel change information from different periods was important to risk relief of dammed lakes and assessment of losses. A Satellite Pour l'Observation de la Terre 5 (SPOT 5) fused image of 10 November 2006 with 2.50 m spatial resolution, and unmanned aerial vehicle (UAV) images of 19 May 2008 and 23 December 2008 with 0.32 and 0.33 m spatial resolution, respectively, were applied to derive channel information in the Chaping River upstream from three periods (pre-disaster, during the disaster and post-disaster) using an object-oriented classification method with an edge-based segmentation algorithm and a support vector machine (SVM) classifier. Geological landslides and dammed lakes from different periods were analysed. Based on the channel information from different periods, channel changes were determined, and impacts of the earthquake on channel area, channel width, river morphology, and so on were discussed. © 2012 Copyright Taylor and Francis Group, LLC.
INDEX KEYWORDS: Antennas; Classification (of information); Codes (symbols); Disasters; Earthquakes; Edge detection; Geology; Image resolution; Image segmentation; Lakes; Landslides; Risk assessment; Support vector machines; Unmanned aerial vehicles (UAV); Channel information; Geological disaster; Object oriented classification; Satellite Pour l'Observation de la Terre; Segmentation algorithms; Spatial resolution; Upstream channel; Wenchuan Earthquake; Rivers; algorithm; channel change; channel morphology; debris flow; landslide; river channel; Sichuan earthquake 2008; spatial resolution; SPOT; unmanned vehicle; China; Sichuan
REFERENCES: Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
Costa, John E., FORMATION AND FAILURE OF NATURAL DAMS., Bulletin of the Geological Society of America, 100, 7, pp. 1054-1068, (1988); 
Documented Historical Landslide Dams from Around the World, (1991); 
Foody, Giles M., A relative evaluation of multiclass image classification by support vector machines, IEEE Transactions on Geoscience and Remote Sensing, 42, 6, pp. 1335-1343, (2004); 
Guo, Huadong, Damage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data, International Journal of Remote Sensing, 31, 13, pp. 3427-3433, (2010); 
Earthquake Induced Landsliding in New Zealand and Implications for mm Intensity and Seismic Hazard Assessment, (1997); 
Herwitz, Stanley R., Imaging from an unmanned aerial vehicle: Agricultural surveillance and decision support, Computers and Electronics in Agriculture, 44, 1, pp. 49-61, (2004); 
Hsu, Yingsung, Impact of earthquake-induced dammed lakes on channel evolution and bed mobility: Case study of the Tsaoling landslide dammed lake, Journal of Hydrology, 374, 1-2, pp. 43-55, (2009); 
Jin, Shuanggen, Co-seismic ionospheric and deformation signals on the 2008 magnitude 8.0 Wenchuan Earthquake from GPS observations, International Journal of Remote Sensing, 31, 13, pp. 3535-3543, (2010); 
Korup, Oliver, Recent research on landslide dams - A literature review with special attention to New Zealand, Progress in Physical Geography, 26, 2, pp. 206-235, (2002)
PUBLISHER: Taylor and Francis Ltd. michael.wagreich@univie.ac.at
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, S., Zhang, L.M., Peng, M., Zhang, L.L., Zhao, H.F., Chen, H.X.
AUTHOR FULL NAMES: Zhang, Shuai (55092670700); Zhang, Limin Min (58883008100); Peng, Ming (37108434300); Zhang, Lulu (58433875100); Zhao, H. F. (59805100000); Chen, Hongxin (55089538300)
55092670700; 58883008100; 37108434300; 58433875100; 59805100000; 55089538300
Assessment of risks of loose landslide deposits formed by the 2008 Wenchuan earthquake
(2012) Natural Hazards and Earth System Sciences, 12 (5), pp. 1381 - 1392, Cited 78 times.
DOI: 10.5194/nhess-12-1381-2012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860797540&doi=10.5194%2Fnhess-12-1381-2012&partnerID=40&md5=67a5de235243b26834655b83d723721c

AFFILIATIONS: Department of Civil & Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong; Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
ABSTRACT: A Geographic Information System (GIS)-based quantitative risk assessment methodology was adopted to evaluate the risks of loose deposits formed by the 2008 Wenchuan earthquake along a highway near the epicenter. A total of 305 loose deposits with a total volume of 4.0 107 m3 has been identified. A physical model was used to determine the failure probability of these loose deposits under six rainfall scenarios, assuming the loose deposits as infinite slopes. The calculated probability of rain-induced slope failures is verified by the recorded landslides at the same site during a storm in 2010. Seventy-nine out of the 112 rain-induced loose deposit failures are predicted by the reliability analysis, with an accuracy of 71%. The results of reliability analysis and information on the consequence of these rain-induced landslides enable the estimation of the annual societal and individual risks of the loose deposits. Under the rainfall scenarios of 30 mm/12 h and 70 mm/12 h, the estimated annual societal risks reach 8.8 and 7.5, respectively, and the individual risks reach 0.05 and 0.04, respectively, which are very high compared with present risk acceptance criteria. The preliminary assessment provides a benchmark for studying the long-term risks of these loose deposits and engineering decision. © Author(s) 2012. CC Attribution 3.0 License.
INDEX KEYWORDS: accuracy assessment; benchmarking; GIS; landform evolution; landslide; probability; reliability analysis; risk assessment; Sichuan earthquake 2008; slope failure
REFERENCES: Probability Concepts in Engineering, (2007); 
Landslide risk management concepts and guidelines, Australian Geomechanics Journal, 35, 1, pp. 49-92, (2000); 
Cascini, Leonardo, Applicability of landslide susceptibility and hazard zoning at different scales, Engineering Geology, 102, 3-4, pp. 164-177, (2008); 
Chang, Dongsheng, Field testing of erodibility of two landslide dams triggered by the 12 May Wenchuan earthquake, Landslides, 8, 3, pp. 321-332, (2011); 
Corominas, Jordi, The angle of reach as a mobility index for small and large landslides, Canadian Geotechnical Journal, 33, 2, pp. 260-271, (1996); 
Landslide Risk Assessment, (1997); 
Fell, Robin, Landslide risk assessment and acceptable risk, Canadian Geotechnical Journal, 31, 2, pp. 261-272, (1994); 
Fell, Robin, Guidelines for landslide susceptibility, hazard and risk zoning for land use planning, Engineering Geology, 102, 3-4, pp. 85-98, (2008); 
Finlay, P. J., Landslide risk assessment: Prediction of travel distance, Canadian Geotechnical Journal, 36, 3, pp. 556-562, (1999); 
Fredlund, Delwyin G., Equations for the soil-water characteristic curve, Canadian Geotechnical Journal, 31, 4, pp. 521-532, (1994)
PUBLISHER: Copernicus GmbH info@copernicus.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Liu, B., Tao, H., Liu, S.-Q., Yu, H., Kong, B.
AUTHOR FULL NAMES: Liu, Bintao (35211116300); Tao, Heping (18434979000); Liu, Shaoquan (7409466331); Yu, Hui (55515499400); Kong, Bo (57204692689)
35211116300; 18434979000; 7409466331; 55515499400; 57204692689
Dynamics of regional ecological frangibility under natural hazard stress: A case study in Qingping Town of Sichuan Province, Southwest China
(2012) Chinese Journal of Applied Ecology, 23 (1), pp. 193 - 198, Cited 9 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860194740&partnerID=40&md5=097841fe9015acbf162e0f3c90d6a6e2

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: By using the aerial remote sensing images after May 12, 2008(the date of catastrophic Wenchuan Earthquake) and the unmanned aircraft vehicle remote sensing images after August 13, 2010(the date of extraordinary debris flow), and in combining with the land use map (1:10000), topographic map(1:50000), and collected field investigation data of Qingping Town, Mianzhu City of Sichuan Province in 2006, this paper analyzed and evaluated the ecological frangibility of the Town. In the Town, the slightly, lightly, moderately, heavily, and extremely fragile ecological zones after the extraordinary debris flow occupied 1.9%, 7.9%, 18.7%, 23.0%, and 48.5%, respectively, with the area of heavily and extremely fragile ecological zones accounting for 71.5% of the total, being 238.45 km2, i. e., the ecological environment was overall very fragile. Under the impact of the two natural hazards, the ecological frangibility degree of the Town increased obviously. As compared with that before the Earthquake, the area of heavily and extremely fragile ecological zones after the Earthquake increased by 12.4%, and the area of extremely fragile ecological zone was 1.67 times larger. The dynamic evolution of the ecological frangibility of the Town was mainly manifested in the conversion of heavily fragile ecological zone into extremely fragile ecological zone. Complex terrain was the key factor of the ecological frangibility of the Town.
AUTHOR KEYWORDS: Dynamic change; Ecological frangibility; Natural hazard; Qingping
INDEX KEYWORDS: aerial photograph; airborne survey; catastrophic event; complex terrain; debris flow; ecological zonation; forest dynamics; geological mapping; natural hazard; remote sensing; Sichuan earthquake 2008; article; China; disaster; earthquake; ecosystem; environmental monitoring; population dynamics; risk assessment; theoretical model; Disasters; Earthquakes; Ecosystem; Environmental Monitoring; Models, Theoretical; Population Dynamics; Remote Sensing Technology; Risk Assessment; Mianzhu; Sichuan; Wenchuan
REFERENCES: Guang-Cai, X. U., Advances in research on ecological vulnerability, Shengtai Xuebao, 29, 5, pp. 2578-2588, (2009); 
Journal of Lanzhou University Natural Sciences, (2003); 
Cui, Shenghui, Progress of the ecological security research, Shengtai Xuebao, 25, 4, pp. 861-868, (2005); 
Yunnan Geographic Environment Research, (2008); 
Acta Ecologica Sinica, (1989); 
Journal of Desert Research, (1991); 
Journal of Soil and Water Conservation, (2004); 
Chen, Liding, The evaluation of eco-environmental susceptibility to human activity in Yulin region, Chinese Geographical Science, 6, 1, pp. 57-65, (1995); 
Journal of Mountain Science, (2003); 
Journal of Natural Resources, (1997)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, H., Lin, Q., Liu, Q.
AUTHOR FULL NAMES: Li, Hui (59640293300); Lin, Qinzhong (7401703690); Liu, Qingjie (55534263100)
59640293300; 7401703690; 55534263100
An interactive interpretation method based on grab cut segment for geological hazard information extraction from remote sensing image
(2011) Proceedings of SPIE - The International Society for Optical Engineering, 8006, art. no. 80061I, Cited 0 times.
DOI: 10.1117/12.902798
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84255170557&doi=10.1117%2F12.902798&partnerID=40&md5=31fb8028e7b040b978fda23d5ee62f4a

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The situation of geological disaster prevention and control in our country is very serious. The application of remote sensing technique in geological disaster monitoring has been more than 30 years, and which has got many successful experiences. Remote sensing technology applications has shown enormous potential in investigation, evaluation, forecast and warning, and relief aspects of geological hazard research, and has been more and more attention to, for remote sensing technology is an high technology means with the ability of big range, all-weather, and dynamic monitoring the spatio-temporal changes of disasters. In the 2008 Wenchuan earthquake disaster, remote sensing technology played a huge role in the emergency response of the earthquake damage. But it has also exposed some problems that urgent needs to solve, the most critical problem of which is lacking of fast and efficient methods for disaster information extraction from remote sensing image data. This problem is also the key technical problems needs to solve and improve in the work of remote sensing application for geological hazard emergency investigation and evaluation. An interactive interpretation method platform based on Grab Cut segmentation was proposed in this paper, and used in interaction extraction of geological hazard information from remote sensing image. Based on ArcGIS Engine second development environment and in the. net framework, the interactive interpretation method utilize Grab Cut segmentation algorithm was developed. Because of Grab Cut image segmentation algorithm exploiting the texture and edge features, using this method can obtain ideal interpretation results and better improve interpreting efficiency, with less interactive steps. © 2011 SPIE.
AUTHOR KEYWORDS: ArcGIS; Grab cut segmentation; Remote sensing image interactive interpretation; Secondary geological disaster information
INDEX KEYWORDS: ArcGIS; ArcGIS engine; Critical problems; Disaster Information; Dynamic monitoring; Earthquake damages; Edge features; Emergency response; Geological disaster; Geological hazards; High technology; Image segmentation algorithm; Information Extraction; Interaction extraction; Interpretation methods; NET framework; Remote sensing applications; Remote sensing image interactive interpretation; Remote sensing images; Remote sensing techniques; Remote sensing technology; Second development; Segmentation algorithms; Spatio-temporal changes; Technical problem; Wenchuan Earthquake; Algorithms; Disaster prevention; Earthquakes; Edge detection; Geographic information systems; Hazards; Image reconstruction; Information analysis; Information systems; Problem solving; Remote sensing; Technology; Image segmentation
REFERENCES: Remote Sensing for Land Resources, (2007); 
Hervás, Javier, Monitoring landslides from optical remotely sensed imagery: The case history of Tessina landslide, Italy, Geomorphology, 54, 1-2, pp. 63-75, (2003); 
Cheng, Ke Sheng, Locating landslides using multi-temporal satellite images, Advances in Space Research, 33, 3, pp. 296-301, (2004); 
Saro, Lee M., Detecting landslide location using KOMPSAT 1 and its application to landslide-susceptibility mapping at the Gangneung area, Korea, Advances in Space Research, 38, 10, pp. 2261-2271, (2006); 
Zhao, Xiang, Extraction of landslide/debris flow information based on multi-source remote sensing data, Journal of Natural Disasters, 18, 6, pp. 29-32, (2009); 
Journal of Remote Sensing, (2008); 
Research of Soil and Water Conservation, (2006); 
Chinese J Eng Geophysics, (2007); 
Surveying and Mapping of Geology and Mineral Resource, (2009); 
Barlow, John, Detecting translational landslide scars using segmentation of Landsat ETM+ and DEM data in the northern Cascade Mountains, British Columbia, Canadian Journal of Remote Sensing, 29, 4, pp. 510-517, (2003)
SPONSORS: Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process., Huazhong University of Science and Technology, Guilin University of Electronic Technology
CONFERENCE NAME: MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications
CONFERENCE DATE: 2011-11-04 through 2011-11-06
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jiao, Q., Zhang, B., Liu, L., Hu, Y.
AUTHOR FULL NAMES: Jiao, Quanjun (23492392400); Zhang, Bing (8835983800); Liu, Liangyun (8600097300); Hu, Yong (57209789813)
23492392400; 8835983800; 8600097300; 57209789813
Estimating fractional vegetation cover in the Wenchuan earthquake disaster area using high-resolution airborne image and Landsat TM image
(2011) Proceedings of SPIE - The International Society for Optical Engineering, 8006, art. no. 80062G, Cited 1 times.
DOI: 10.1117/12.902065
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84255170524&doi=10.1117%2F12.902065&partnerID=40&md5=3786b80a6e1b49aa2fd5da373f69029d

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The fractional vegetation cover (Fvc) can be characterized by strong temporal dynamics that need to be considered for environmental recovery assessment in the Wenchuan earthquake disaster area. This study is to test the capacity of satellite remote sensing images in estimating fractional vegetation cover in the Sichuan disaster area. Two different spectral mixture analysis methods including N* and N*2 transformed from NDVI are applied for fractional vegetation cover estimation using Landsat TM image. High-resolution fractional vegetation cover production from airborne images is used for validation. The result shows that N* has the non linear relationship with airborne fractional vegetation cover values in this study area and N*2 takes a better performance (R2=0.993). In total, retrieved Fvc values from Landsat TM image have a strong relationship to those from airborne image, and can be used in environmental dynamics assessment in the Wenchuan Earthquake disaster area. © 2011 SPIE.
AUTHOR KEYWORDS: Airborne remote sensing; Fractional vegetation cover; Landsat TM; The wenchuan earthquake area
INDEX KEYWORDS: Airborne images; Airborne remote sensing; Disaster areas; Environmental dynamics; Fractional vegetation cover; High resolution; LANDSAT TM; Landsat TM images; Non-linear relationships; Satellite remote sensing; Sichuan; Spectral mixture analysis; Study areas; Temporal dynamics; Wenchuan Earthquake; Dynamics; Estimation; Geographic information systems; Image reconstruction; Information systems; Remote sensing; Vegetation; Earthquakes
REFERENCES: Lin, Wentzu, Eco-environmental changes assessment at the Chiufenershan landslide area caused by catastrophic earthquake in Central Taiwan, Ecological Engineering, 33, 3-4, pp. 220-232, (2008); 
Cochard, Roland, The 2004 tsunami in Aceh and Southern Thailand: A review on coastal ecosystems, wave hazards and vulnerability, Perspectives in Plant Ecology, Evolution and Systematics, 10, 1, pp. 3-40, (2008); 
Liu, Yang, Evaluating the vegetation destruction and recovery of Wenchuan earthquake using MODIS data, Natural Hazards, 54, 3, pp. 851-862, (2010); 
Choudhúry, Bhaskar J., Relations between evaporation coefficients and vegetation indices studied by model simulations, Remote Sensing of Environment, 50, 1, pp. 1-17, (1994); 
Boyd, Doreen S., Evaluation of approaches for forest cover estimation in the Pacific Northwest, USA, using remote sensing, Applied Geography, 22, 4, pp. 375-392, (2002); 
Pech, Roger P., Reflectance modelling and the derivation of vegetation indices for an Australian semi-arid shrubland, International Journal of Remote Sensing, 7, 3, pp. 389-403, (1986); 
Qi, Jiaguo Guo, Spatial and temporal dynamics of vegetation in the San Pedro River basin area, Agricultural and Forest Meteorology, 105, 1-3, pp. 55-68, (2000); 
Rundquist, Bradley C., The influence of canopy green vegetation fraction on spectral measurements over native tallgrass prairie, Remote Sensing of Environment, 81, 1, pp. 129-135, (2002); 
Carlson, Toby Nahum, On the relation between NDVI, fractional vegetation cover, and leaf area index, Remote Sensing of Environment, 62, 3, pp. 241-252, (1997); 
Patel, Naranbhai K., Study of fractional vegetation cover using high spectral resolution data, Journal of the Indian Society of Remote Sensing, 35, 1, pp. 73-79, (2007)
SPONSORS: Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process., Huazhong University of Science and Technology, Guilin University of Electronic Technology
CONFERENCE NAME: MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications
CONFERENCE DATE: 2011-11-04 through 2011-11-06
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhang, L.M., Zhang, S., Zhao, H.F., Peng, M.
AUTHOR FULL NAMES: Zhang, Limin Min (58883008100); Zhang, Shuai (55092670700); Zhao, H. F. (59805100000); Peng, Ming (37108434300)
58883008100; 55092670700; 59805100000; 37108434300
Assessment of risks of soil deposits formed during Wenchuan earthquake
(2011), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867183653&partnerID=40&md5=e87dc27ee76bbb493c890a0a8dd794c9

AFFILIATIONS: Department of Civil & Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong
ABSTRACT: This paper presents the assessment of risks of the loose soil deposits along Provincial Road 303 near the epicenter of the 2008 Wechuan Earthquake. The loose deposits formed during the earthquake on the steep terrains in the Xiaojiagou ravine are identified with the aid of a GIS platform. The stability of these deposits during rainfall infiltration is analyzed. For simplicity, the failure mode of these loose deposits is assumed to be shallow-seated so that these deposits can be treated as infinite slopes. Subsequently, the run-out distances of these deposits are estimated and the risks to passengers traveling on the road are assessed.
INDEX KEYWORDS: Infinite slope; Loose deposits; Loose soils; Rainfall infiltration; Runout distances; Soil deposits; Wenchuan Earthquake; Earthquakes; Geotechnical engineering; Risk assessment; Risk perception; Roads and streets; Soil mechanics; Deposits
REFERENCES: Corominas, Jordi, The angle of reach as a mobility index for small and large landslides, Canadian Geotechnical Journal, 33, 2, pp. 260-271, (1996); 
Landslide Risk Management, (2005); 
Hunter, Gavan J., Travel distance angle for "rapid" landslides in constructed and natural soil slopes, Canadian Geotechnical Journal, 40, 6, pp. 1123-1141, (2003); 
Proceedings of the Symposium on Hong Kong Soils, (1962); 
Rahardjo, Harianto, Shear-strength characteristics of a residual soil, Canadian Geotechnical Journal, 32, 1, pp. 60-77, (1995); 
Slope Engineering in Hong Kong, (1998); 
Xu, Chong, GIS based certainty factor analysis of landslide triggering factors in Wenchuan earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 29, SUPPL. 1, pp. 2972-2981, (2010)
CONFERENCE NAME: 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
CONFERENCE DATE: 2011-05-23 through 2011-05-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Towhata, I., Qiao, J.
AUTHOR FULL NAMES: Towhata, Ikuo (7004309093); Qiao, Jianping (24485090400)
7004309093; 24485090400
Debris flows in Sichuan province in China two years after the 2008 Wenchuan earthquake
(2011), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867153775&partnerID=40&md5=f919ae19c2f35fa140f96cff3820a363

AFFILIATIONS: Department of Civil Engineering, The University of Tokyo, Tokyo, Japan; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: One of the important points of discussion in the recent disaster mitigation studies is the compound effect of two different types of disaster mechanisms. The present study concerns the compound effect of earthquake and heavy rainfall on slope disasters and a field visit was made of several sites of recent rainfall-induced debris flow in Sichuan Province in China where a past earthquake caused significant slope failures (Fig. 1). It was found that the recent debris flows came from the huge amount of valley deposits that were produced by slope failures during the 2008 Wenchuan earthquake (Fig. 2). Because there still remain debris deposits in the valleys, future risk of debris flow is still high. The risk is made higher when human habitation is located at the exit of a valley and debris flow can directly hit houses and buildings. When the slope surface does not have a stable soil layer, erosion upon rainfalls prevents growth of vegetation and delays the re-stabilization of the slope (Fig. 3). With these situations and the limited availability of financial resources for mitigation of natural disasters, the authors propose the use of inexpensive slope monitoring and early warning for safety of local people (Fig. 4).
INDEX KEYWORDS: Compound effect; Debris flows; Disaster mitigation; Early warning; Financial resources; Heavy rainfall; Human habitation; Local people; Natural disasters; Sichuan province; Slope disaster; Slope failure; Slope monitoring; Slope surfaces; Soil layer; Wenchuan Earthquake; Deposits; Earthquakes; Landforms; Rain; Slope protection; Slope stability; Soil mechanics; Stabilization; Debris
REFERENCES: Features and the Distribution of Landslides Induced by the 2008 Wenchuan Earthquake Sichuan China, (2009); 
Journal of Mountain Science, (2010); 
Towhata, Ikuo, Lessons from Earthquakes in Recent Times and their Effects on the Development of Geotechnology, Soils and Foundations, 50, 6, pp. 925-935, (2010); 
5th International Conference on Earthquake Geotechnical Engineering, (2011); 
Uchimura, Taro, Simple monitoring method for precaution of landslides watching tilting and water contents on slopes surface, Landslides, 7, 3, pp. 351-357, (2010)
CONFERENCE NAME: 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
CONFERENCE DATE: 2011-05-23 through 2011-05-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, R., Li, W.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Li, Weile (25936551300)
55835407700; 25936551300
Characteristics of earthquakes in mountain areas and post-earthquake management
(2011), pp. 121 - 142, Cited 1 times.
DOI: 10.1007/978-1-4419-6436-6_7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866705690&doi=10.1007%2F978-1-4419-6436-6_7&partnerID=40&md5=9eba126cc309b81058f6d81d11b23db8

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Using the Geographic Information Systems (GIS) technique and remote-sensing images and aerial photographs collected from the Wenchuan earthquake region, this chapter analyzes the occurrence of geo-hazards and their correlations with the distance from the co-seismic fault, slope steepness, elevation, and rock type. Our findings show that the geo-hazards triggered by earthquakes are distributed along co-seismic fault and rivers. Specifically, geo-hazards tend to concentrate in areas near the hanging wall of co-seismic fault more than in those near the footwall. The slope's steepness is also a key factor deciding the development of quake-induced geo-hazards, since most of the latter are distributed at the mountain areas within the range of 20-50°. In addition, geo-hazards are found to have a close relationship to the elevation and micro-landform and that thin ridge, isolated or full-face space mountains are most sensitive to seismic waves, and thus have a striking amplification effect on geo-hazards. Lastly, we suggest that the above findings may serve as an important basis for the reconstruction of earthquake-hit mountain regions. © 2011 Springer Science+Business Media, LLC.
REFERENCES: Abrahamson, Norman A.Bolt, Empirical response spectral attenuation relations for shallow crustal earthquakes, Seismological Research Letters, 68, 1, pp. 94-109, (1997); 
Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996); 
Bao, Yejing, Probabilistic analysis of earthquake-induced landslides, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 24, 1, pp. 66-70, (2005); 
Boore, David M., Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: A summary of recent work, Seismological Research Letters, 68, 1, pp. 128-153, (1997); 
Campbell, Kenneth W., Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra, Seismological Research Letters, 68, 1, pp. 154-179, (1997); 
Science and Technology Review, (2008); 
Why the Wenchuan Earthquake is so Disastrous in Chinese, (2008); 
East China University of Technology Journal Social Sciences Edition, (2005); 
Comerio, Mary C., Public policy for reducing earthquake risks: A US perspective, Building Research and Information, 32, 5, pp. 403-413, (2004); 
Seismology and Geology, (2008)
PUBLISHER: Springer New York
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Su, P.C., Wei, F., Cheng, Z., Liu, J.
AUTHOR FULL NAMES: Su, Pengcheng (55234493100); Wei, Fangqiang (14033564100); Cheng, Zunlan (18433736100); Liu, Jingjing (55963771200)
55234493100; 14033564100; 18433736100; 55963771200
Debris flows in Mozi gully, China following the 2008 Wenchuan earthquake
(2011) International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, pp. 769 - 777, Cited 3 times.
DOI: 10.4408/IJEGE.2011-03.B-084
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861632311&doi=10.4408%2FIJEGE.2011-03.B-084&partnerID=40&md5=62e04784b4bf3d104a5d929e20159c9d

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Graduate School of Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Numerous landslide that provided abundant material for the mobilization of debris flows were triggered in the Mozi gully on the right bank of Mingjiang River in response to the M8.0 Wenchuan earthquake of May 12, 2008. Following the earthquake, debris flows occurred during July through September of 2008 and again in September of 2009. Five of these events blocked the Mingjiang River. This paper estimates the volume of landslide material contributed to the valley by comparing remote sensing images before and after the quake, and analyzes the resultant landslide dams to estimate the volume ume of material necessary to block the channel. Return periods of debris flows with varying peak discharges are estimated based on empirical formulas and field surveys of the valley. © 2011 Casa Editrice Università La Sapienza.
AUTHOR KEYWORDS: Debris flow; Landslide; Landslide dam; Mozi gully; Wenchuan earthquake
INDEX KEYWORDS: Abundant materials; Debris flows; Empirical formulas; Field surveys; Landslide dam; Mozi gully; Peak discharge; Remote sensing images; Return periods; Wenchuan Earthquake; Earthquakes; Hazards; Hydraulic structures; Image reconstruction; Landslides; Debris
REFERENCES: Prevention of Debris Flow, (1983); 
Dissertation of Doctoral Degree, (2000); 
Aba Zang and Qiang Nationality Autonmous District Sichuan Province Chorography of Wenchuan County M, (1992); 
Journal of Mountain Science, (2008); 
A Bulletin of Water Resources and Quality in Sichuan Province in Chinese, (2008); 
Journal of Engineering Geology, (2008); 
Storm Flood Calculation Manual of Middle and Small Basins in Sichuan Province M, (1984); 
Journal of Mountain Science, (2009); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Guide to Prevention of Debris Flow, (1991)
CONFERENCE NAME: 5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
CONFERENCE DATE: 2011-06-14 through 2011-06-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2011
(2011), 11 (PART A), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857423042&partnerID=40&md5=4bfb7589ba2748a2cbf0757d237e709e

ABSTRACT: The proceedings contain 237 papers. The topics discussed include: study on family carbon emissions assessment and optimization; the design and construction of decision-making command system for digital oilfield emergency drill; a new wireless sensor platform with camera; a crop monitoring system based on wireless sensor network; testing and analysis of thermal performance of ground source heat pump system; research for ventilation properties of solar chimney with vertical collector; study on emissions of a DI diesel engine fuelled with pistacia chinensis bunge seed biodiesel-diesel blends; study of earthquake disaster population risk based on GIS a case study of wenchuan earthquake region; the resource utilization of anaerobic fermentation residue; sensing of diesel vehicle exhaust gases under vibration condition; and research on the influence of ocean environment on sea clutter.
INDEX KEYWORDS: Pistacia; Pistacia chinensis
CONFERENCE NAME: 2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2011
CONFERENCE DATE: 2011-12-14 through 2011-12-15
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2011
(2011), 11 (PART B), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857408209&partnerID=40&md5=d6cf747bb2eac9ad96de915160e06e7e

ABSTRACT: The proceedings contain 237 papers. The topics discussed include: study on family carbon emissions assessment and optimization; the design and construction of decision-making command system for digital oilfield emergency drill; a new wireless sensor platform with camera; a crop monitoring system based on wireless sensor network; testing and analysis of thermal performance of ground source heat pump system; research for ventilation properties of solar chimney with vertical collector; study on emissions of a DI diesel engine fuelled with pistacia chinensis bunge seed biodiesel-diesel blends; study of earthquake disaster population risk based on GIS a case study of wenchuan earthquake region; the resource utilization of anaerobic fermentation residue; sensing of diesel vehicle exhaust gases under vibration condition; and research on the influence of ocean environment on sea clutter.
INDEX KEYWORDS: Pistacia; Pistacia chinensis
CONFERENCE NAME: 2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2011
CONFERENCE DATE: 2011-12-14 through 2011-12-15
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Bai, S.B., Wang, J., Bell, R., Glade, T.
AUTHOR FULL NAMES: Bai, Shibiao (15830966700); Wang, Jian (55491249300); Bell, Rainer (56307438000); Glade, Thomas W. (57192782350)
15830966700; 55491249300; 56307438000; 57192782350
Distribution and susceptibility assessments of landslide triggered by Wencuan earthquake at Longnan
(2011) Advances in Intelligent and Soft Computing, 111, pp. 547 - 554, Cited 1 times.
DOI: 10.1007/978-3-642-25188-7_68
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84555177756&doi=10.1007%2F978-3-642-25188-7_68&partnerID=40&md5=db0274e47ecdf93d8a5240d9a88d5bc6

AFFILIATIONS: College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu, China; Institute for Geography and Regional Research, Universität Wien, Vienna, Vienna, Austria
ABSTRACT: It is important to calculate these areas prone for future landsiding through landslide susceptibility maps. A landslide causative factor database both before and after datasets was constructed. Data are stored in a resolution of 30×30m and include digital orthophoto maps (DOM), digital elevation model (DEM) and derived topographical parameters (e.g. altitude, slope, aspect, profile curvature, plan curvature), geology, land use, average annual rainfall, peak ground acceleration and further different environmental layers including road network and rivers. The 1334 post WenChuan earthquake landslide inventory is build up by field investigation and by interpretation of remote-sensing imagery (SPOT 5 and ALOS) and by monoscopic manual interpretation. The quality of susceptibility mapping was validated by splitting the study area into a training and validation set. The prediction capability analysis showed that the landslide susceptibility map has the potential to be used for land planning in this region as well as for precautionary emergency planning by local authorities. © 2011 Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: China; Landslide susceptibility; logistic regression; Longnan; Wenchuan earthquake
INDEX KEYWORDS: China; Landslide susceptibility; logistic regression; Longnan; Wenchuan Earthquake; Earthquakes; Forestry; Motor transportation; Network layers; Remote sensing; Surveying; Landslides
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Logistic Regression Using the Sas System Theory and Application, (1999); 
Atkinson, Peter M., Generalised linear modelling of susceptibility to landsliding in the central Apennines, Italy, Computers and Geosciences, 24, 4, pp. 373-385, (1998); 
Environ Earth Sci, (2011); 
Eighth International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences, (2008); 
Pedosphere, (2009); 
Bai, Shibiao, GIS-based logistic regression for landslide susceptibility mapping of the Zhongxian segment in the Three Gorges area, China, Geomorphology, 115, 1-2, pp. 23-31, (2010); 
Bell, Rainer, Quantitative risk analysis for landslides - Examples from Bíldudalur, NW-Iceland, Natural Hazards and Earth System Sciences, 4, 1, pp. 117-131, (2004); 
Çan, Tolga, Susceptibility assessments of shallow earthflows triggered by heavy rainfall at three catchments by logistic regression analyses, Geomorphology, 72, 1-4, pp. 250-271, (2005); 
Chang, Kangtsung, Modeling typhoon- and earthquake-induced landslides in a mountainous watershed using logistic regression, Geomorphology, 89, 3-4, pp. 335-347, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tang, C., Zhu, J., Ding, J., Cui, X., Chen, L., Zhang, J.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Zhu, Jing (55704611000); Ding, Jun (55463437900); Cui, Xiaofei (54786299000); Chen, Lei (57206673624); Zhang, Jianshi (59652341800)
35932953300; 55704611000; 55463437900; 54786299000; 57206673624; 59652341800
Catastrophic debris flows triggered by a 14 August 2010 rainfall at the epicenter of the Wenchuan earthquake
(2011) Landslides, 8 (4), pp. 485 - 497, Cited 215 times.
DOI: 10.1007/s10346-011-0269-5
https://www.scopus.com/inward/record.uri?eid=2-s2.0-82255163076&doi=10.1007%2Fs10346-011-0269-5&partnerID=40&md5=ee156e5db07e788a1b53daffbeba1c11

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan earthquake of May 12, 2008 produced large amounts of loose material (landslide debris) that are still present on the steep slopes and in the gullies. This loose material creates an important hazard as strong rainfall can cause the development of devastating debris flows that will endanger the resettled population and destroy the result of reconstruction efforts. On 14 August 2010, a total of 21 debris flows were triggered by heavy rainfall around the town of Yingxue, located near the epicenter of the Wenchuan earthquake. One of these debris flows produced a debris dam, which then changed the course of the river and resulted in the flooding of the newly reconstructed Yinxue town. Prior to this catastrophic event, debris flow hazard had been recognized in the region, but its potential for such widespread and devastating impacts was not fully appreciated. Our primary objective for this study was to analyze the characteristics of the triggering rainfall and the sediment supply conditions leading to this event. Our field observations show that even small debris flow catchment areas have caused widespread sediment deposition on the existing fans. It is concluded that the whole of the area shaken by the Wenchuan earthquake is more susceptible to debris flows, initiated by localized heavy rainfall, than had been assumed earlier. The results of this study contribute to a better understanding of the conditions leading to catastrophic debris flow events in the earthquake-hit area. This is essential for the implementation of proper early warning, prevention, and mitigation measures as well as a better land use planning in this area. © 2011 Springer-Verlag.
AUTHOR KEYWORDS: Basin topography; Debris dam; Debris flows; Intense rainfall; Seismic landslides; Wenchuan earthquake China
INDEX KEYWORDS: Catastrophic event; Catchment area; Debris flow hazards; Debris flows; Early warning; Field observations; Heavy rainfall; Land Use Planning; Loose materials; Mitigation measures; Primary objective; Sediment deposition; Sediment supply; Steep slope; Wenchuan Earthquake; Anoxic sediments; Catchments; Debris; Earthquakes; Hazards; Hydraulic structures; Land use; Landslides; Sedimentology; Rain; basin analysis; catastrophic event; debris flow; early warning system; earthquake epicenter; flooding; gully; hazard management; land use planning; landslide; sediment transport; Sichuan earthquake 2008; topographic effect; China; Sichuan; Yingxiu
REFERENCES: Alexander, David E., Urban landslides, Progress in Physical Geography, 13, 2, pp. 157-189, (1989); 
Bovis, Michael J., The role of debris supply conditions in predicting debris flow activity, Earth Surface Processes and Landforms, 24, 11, pp. 1039-1054, (1999); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
Soil Slips Debris Flows and Rainstorms in the Santa Monica Mountains and Vicinity Southern California, (1975); 
Landslides in A Semiarid Environment, (1989); 
Cannon, Susan H., Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado, Geomorphology, 39, 3-4, pp. 171-188, (2001); 
Cepeda, José Mauricio, Landslide-triggering rainfall thresholds: A conceptual framework, Quarterly Journal of Engineering Geology and Hydrogeology, 43, 1, pp. 69-84, (2010); 
Chen, Chienyuan, Sedimentary impacts from landslides in the Tachia River Basin, Taiwan, Geomorphology, 105, 3-4, pp. 355-365, (2009); 
Chen, Hongey, The impact of landslide and debris flows triggered by Typhoon Mindulle in Taiwan, Quarterly Journal of Engineering Geology and Hydrogeology, 38, 3, pp. 301-304, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, M.-C., Liu, J.
AUTHOR FULL NAMES: Wu, Mengche (57318518000); Liu, Jianguo (36077207500)
57318518000; 36077207500
Adaptive Local Kriging (ALK) to retrieve the slant range surface motion maps of Wenchuan earthquake
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049409, pp. 1183 - 1186, Cited 1 times.
DOI: 10.1109/IGARSS.2011.6049409
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955149303&doi=10.1109%2FIGARSS.2011.6049409&partnerID=40&md5=f8c471ae2cc0f555dc563756924dcea0

AFFILIATIONS: Department of Earth Science and Engineering, Imperial College London, London, United Kingdom
ABSTRACT: Kriging technique is widely used for raster data interpolation, such as digital elevation models and precipitation maps. It depends on the spatial distribution of sampled values and the variogram model which fit an empirical global semivariogram of entire image. However, such a variogram model may not suitable for datasets with strong trends of the spatial d istribution, such as differential interferometric synthetic aperture radar (DInSAR) data. Here we propose a modified kriging method, adaptive local kriging (ALK), for retrieve of the missing data in the decoherence zone of the ALOS PALSAR DInSAR data of 2008 Wenchuan earthquake. In the ALK, dynamic linear variogram models fitting the local empirical semivariograms are used instead of a global variogram model for the whole image. The localized adaptive approach avoids drastic errors in the large decoherence gaps and the value prediction is thus significant improved as confirmed in comparison with the original DInSAR data. © 2011 IEEE.
AUTHOR KEYWORDS: Adaptive Local Kriging; Co-seismic deformation; DInSAR
INDEX KEYWORDS: Adaptive approach; Coseismic deformation; D-inSAR; Data sets; Decoherence; Differential interferometric synthetic aperture radars; Digital elevation model; Kriging; Kriging methods; Kriging technique; Missing data; Precipitation map; Raster data; Sampled values; Semivariograms; Surface motions; Value prediction; Variogram models; Wenchuan Earthquake; Earthquakes; Geodetic satellites; Geology; Imaging systems; Quantum theory; Remote sensing; Synthetic aperture radar; Interpolation
REFERENCES: Goldstein, Richard M., Interferometric radar measurement of ocean surface currents, Nature, 328, 6132, pp. 707-709, (1988); 
Goldstein, Richard M., Remote sensing of ocean currents, Science, 246, 4935, pp. 1282-1285, (1989); 
Zebker, Howard A., On the derivation of coseismic displacement fields using differential radar interferometry: the Landers earthquake, Journal of Geophysical Research, 99, B10, pp. 19-634, (1994); 
Zebker, Howard A., Accuracy of Topographic Maps Derived from ERS-1 Interferometric Radar, IEEE Transactions on Geoscience and Remote Sensing, 32, 4, pp. 823-836, (1994); 
Massonnet, Didier, Radar interferometry and its application to changes in the earth's surface, Reviews of Geophysics, 36, 4, pp. 441-500, (1998); 
Rosen, Paul A., Synthetic aperture radar interferometry, Proceedings of the IEEE, 88, 3, pp. 333-380, (2000); 
Principles of Photogrammetry with Remote Sensing, (1990); 
Arcgis 9 Using Arcgis Geostatistical Analyst, (2003); 
Gudmundsson, Sverrir I., Three-dimensional surface motion maps estimated from combined interferometric synthetic aperture radar and GPS data, Journal of Geophysical Research: Solid Earth, 107, 10, (2002); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, S.-J., Ma, Y., Wu, L.
AUTHOR FULL NAMES: Liu, Shanjun (54409091600); Ma, Yuntao (55575789600); Wu, Lixin (55714061400)
54409091600; 55575789600; 55714061400
Microwave radiation anomaly of Wenchuan earthquake and its mechanism
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049719, pp. 2500 - 2503, Cited 7 times.
DOI: 10.1109/IGARSS.2011.6049719
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955139673&doi=10.1109%2FIGARSS.2011.6049719&partnerID=40&md5=e47eb4c4cad1db0719b5834e1cc99def

AFFILIATIONS: Institute for Geo-informatics and Digital Mine Research, Northeastern University, Shenyang, Liaoning, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: Some authors reported that there were anomalies appearing in the satellite remote sensing information before earthquake, including thermal infrared anomaly, water vapor anomaly and microwave anomaly etc. But how to obtain the actual anomaly from the complicated remote sensing information is very difficult due to the influencing of many factors, such as terrain, physiognomy, geological condition, and weather etc. Meanwhile the explaining of anomaly mechanism is another difficultly. © 2011 IEEE.
AUTHOR KEYWORDS: AMER-E; earthquake; microwave radiation anomaly; remote sensing
INDEX KEYWORDS: AMER-E; Geological conditions; Microwave radiations; Remote sensing information; Satellite remote sensing; Thermal infrared; Wenchuan Earthquake; Geology; Remote sensing; Water vapor; Earthquakes
REFERENCES: Proc Acad Sci USSR, (1988); 
Tronin, A. A., Satellite thermal survey—A new tool for the study of seismoactive regions, International Journal of Remote Sensing, 17, 8, pp. 1439-1455, (1996); 
Chinese Science Bulletin, (1991); 
J Ind Geophys Union, (2005); 
Tramutoli, Valerio, Assessing the potential of thermal infrared satellite surveys for monitoring seismically active areas: The case of Kocaeli (İzmit) earthquake, August 17, 1999, Remote Sensing of Environment, 96, 3-4, pp. 409-426, (2005); 
Dey, Sagnik, Anomalous changes in column water vapor after Gujarat earthquake, Advances in Space Research, 33, 3, pp. 274-278, (2004); 
Liu, Shanjun, Analysis on the water vapor anomaly before Wenchuan earthquake based on MODIS data, International Geoscience and Remote Sensing Symposium (IGARSS), 2, pp. II412-II415, (2009); 
Maeda, Takashi, Detection of microwave signals associated with rock failures in an earthquake from satellite-borne microwave radiometer data, International Geoscience and Remote Sensing Symposium (IGARSS), 3, pp. III61-III64, (2009)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ma, Y., Liu, S.-J., Wu, L., Ma, B.
AUTHOR FULL NAMES: Ma, Yuntao (55575789600); Liu, Shanjun (54409091600); Wu, Lixin (55714061400); Ma, Baodong (23492975400)
55575789600; 54409091600; 55714061400; 23492975400
A new method to extract and analyze abnormal phenomenon of earthquake from remote sensing information
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049606, pp. 2208 - 2211, Cited 1 times.
DOI: 10.1109/IGARSS.2011.6049606
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955136912&doi=10.1109%2FIGARSS.2011.6049606&partnerID=40&md5=fd72c1d252eb0637996f1efa41c9f3c6

AFFILIATIONS: College of Resources and Civil Engineering, Shenyang, Liaoning, China; School of Civil Engineering, Shenyang Jianzhu University, Shenyang, Liaoning, China; Academy of Disaster Reduction and Emergency Management, Ministry of Education of the People's Republic of China, Beijing, Beijing, China
ABSTRACT: The satellite remote sensing has become a promising technique for detecting earthquake and fault activities. But the radiation and the reflection of the earth surface detected by remote sensing are influenced not only by earthquake or fault activities but also by many factors such as terrain, vegetation, weather and so on. In order to effectively extract the earthquake anomaly and get rid of the impacts of non-earthquake factors, this paper presented a new method to extract and analyze anomaly caused by earthquakes or fault activities. We applied the method to the data of AMSR-E and MODIS for the earthquake that struck Sichuan, China, on May 12, 2008. As a result, we detected that the thermal infrared (TIR) anomaly information retrieved from MODIS data emerged before the earthquake and the microwave radiation anomaly retrieved from AMSR-E data emerged both before and after the earthquake. © 2011 IEEE.
AUTHOR KEYWORDS: AMSR-E; microwave radiation; MODIS; thermal infrared; Wenchuan earthquake
INDEX KEYWORDS: AMSR-E; Microwave radiations; MODIS; Thermal infrared; Wenchuan Earthquake; Geology; Infrared radiation; Radiometers; Remote sensing; Earthquakes
REFERENCES: Sci Technol Rev, (2008); 
Science Technology Review, (2008); 
Zhang, Yuansheng, Wenchuan earthquake: Brightness temperature changes from satellite infrared information, Chinese Science Bulletin, 55, 18, pp. 1917-1924, (2010); 
Processings International Geoscience and Remote Sensing Symposium, (2009); 
Xu, Zhongyin, Experimental study on the microwave monitoring of rock stress and fracture, Progress in Electromagnetics Research Symposium, 1, pp. 130-134, (2010)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Qu, C., Liu, Y., Shan, X.-J., Zhang, G., Zhang, G.-F., Song, X.-G.
AUTHOR FULL NAMES: Qu, Chunyan (8204955900); Liu, Yunhua (26322999900); Shan, Xianjian (7101712284); Zhang, Guohong (14010226900); Zhang, Guifang (55819500900); Song, Xiaogang (23006898300)
8204955900; 26322999900; 7101712284; 14010226900; 55819500900; 23006898300
Co-seismic displacement observation in decorelate belt along seismic fault of 2008 Wenchuan earthquake
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049408, pp. 1179 - 1182, Cited 0 times.
DOI: 10.1109/IGARSS.2011.6049408
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955131971&doi=10.1109%2FIGARSS.2011.6049408&partnerID=40&md5=c120d0276ec91938ee28c1320432abf4

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: In this work we employ the pixel offset tracking technique to capture large displacements in incoherent zone nearby the Yingxiu-Beichuan fault caused by 2008 Wenchuan Ms8.0 earthquake. The used data of 6 tracks is from ALOS/PASAR dataset of Japan. The result shows that the entire surface rupture belt is 238km long, extending almost linearly in a direction NE42°. It is offset left laterally by a NW-striking fault at Xiaoyudong and turns at Gaochuan, where the rupture belt shifts toward south by 5km largely keeping the original trend. In terms of features of rupture traces, the rupture belt can be divided into 5 sections and 3 types. North to rupture belt, surface displacements are 2.95m on average, mostly in 2.0∼3.5m with the maximum 7.0∼9.0m at individual places nearby Beichuan. South to the rupture belt, the average displacement is 1.75m, dominated by 1.0∼2.0m, with 3.0∼4.0m at a few sites. Along the Guanxian-Jiangyou fault, there is a uplift zone in the radar line of sight, which is 66km long, 1.5∼6.0km wide, with vertical displacements about 2m but no observable rupture traces. © 2011 IEEE.
AUTHOR KEYWORDS: ALOS; incoherent zone; Interferometry; pixel offset; Wenchuan earthquake
INDEX KEYWORDS: ALOS; Co-seismic displacement; Data sets; incoherent zone; Large displacements; Line of Sight; Offset tracking; Seismic faults; Surface displacement; Surface ruptures; Uplift zones; Vertical displacements; Wenchuan Earthquake; Geology; Pixels; Remote sensing; Earthquakes
REFERENCES: Zhang, Peizlien Zhen, Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China, Acta Geophysica Sinica, 51, 4, pp. 1066-1073, (2008); 
Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
Science in China Series D, (2008); 
Shan, Xianjian, Coseismic surface deformation caused by the Wenchuan Ms8. 0 earthquake from InSAR data analysis, Acta Geophysica Sinica, 52, 2, pp. 496-504, (2009); 
Hao, Ken Xiansheng, Coseismic surface-ruptures and crustal deformations of the 2008 Wenchuan earthquake MW 7.9, China, Geophysical Research Letters, 36, 11, (2009); 
Ge, Linlin, Preliminary results of satellite radar differential interferometry for the co-seismic deformation of the 12 may 2008 ms8.0 wenchuan earthquake, Geographic Information Sciences, 14, 1, pp. 12-19, (2008); 
Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009); 
Massonnet, Didier, Radar interferometric mapping of deformation in the year after the Landers earthquake, Nature, 369, 6477, pp. 227-230, (1994); 
Zebker, Howard A., On the derivation of coseismic displacement fields using differential radar interferometry: the Landers earthquake, Journal of Geophysical Research, 99, B10, pp. 19-634, (1994)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Miyawaki, M., Yamaguchi, S., Kimura, T.
AUTHOR FULL NAMES: Miyawaki, Masanori (35510315800); Yamaguchi, Shino (54387823600); Kimura, Tsunekazu (36721325100)
35510315800; 54387823600; 36721325100
Extraction of wide-ranging crustal movement using ALOS/PALSAR ScanSAR interferometry
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049410, pp. 1187 - 1190, Cited 1 times.
DOI: 10.1109/IGARSS.2011.6049410
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955128678&doi=10.1109%2FIGARSS.2011.6049410&partnerID=40&md5=3ac6a80a1c4e01f45c8bc8bf81d12c27

AFFILIATIONS: NEC Corporation, Tokyo, Japan; NEC Corporation, Tokyo, Japan
ABSTRACT: In recent years, huge earthquakes have occurred in many places and those have induced the crustal movements over hundreds of kilometers. In such cases, the entire movement area cannot be observed with differential interferometric SAR processing using Stripmap mode data, because Stripmap mode of ALOS/PALSAR covers only 70km swath. On the other hand, ScanSAR is suitable for extraction of wide-ranging crustal movement caused by huge earthquake due to its wide coverage about 350km swath. Authors tried ScanSAR-ScanSAR differential interferometric processing using a lot of pairs of PALSAR ScanSAR mode data. We processed in two actual huge earthquake cases. One is the 2008 China Wenchuan earthquake (May 12 2008, Mw 7.9) case, and the other is the 2010 Chile earthquake (Feb. 27 2010, Mw 8.8) case. In this paper, the results of these two ScanSAR-ScanSAR differential interferometric SAR processing using PALSAR data are introduced. As a result, it is demonstrated that ScanSAR-ScanSAR differential interferomtry is a very powerful tool to detect the wide-ranging crustal movement caused by a huge earthquake. © 2011 IEEE.
AUTHOR KEYWORDS: ALOS; differential interferometry; PALSAR; ScanSAR
INDEX KEYWORDS: ALOS; ALOS/PALSAR; Differential interferometry; Interferometric processing; Interferometric SAR; Movement areas; PALSAR; Scansar; ScanSAR interferometry; Strip-map mode; Wenchuan Earthquake; Data handling; Earthquakes; Geology; Remote sensing; Interferometry
REFERENCES: Bamler, Richard, RADARSAT ScanSAR interferometry, International Geoscience and Remote Sensing Symposium (IGARSS), 3, pp. 1517-1521, (1999); 
Shimada, Masanobu, Palsar scansar scansar interferometry, International Geoscience and Remote Sensing Symposium (IGARSS), 4, 1, pp. 93-96, (2008); 
Bamler, Richard, Adapting precision standard SAR processors to scanSAR, International Geoscience and Remote Sensing Symposium (IGARSS), 3, pp. 2051-2053, (1995)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, L., Zhang, B., Lei, L., Gao, L., Peng, D., Wu, Y., Ma, J.
AUTHOR FULL NAMES: Li, Liwei (55730921800); Zhang, Bing (8835983800); Lei, Liping (57203377707); Gao, Lianru (14031580000); Peng, D. (59805219800); Wu, Yuangfeng (55558008700); Ma, Jianwen (7406200149)
55730921800; 8835983800; 57203377707; 14031580000; 59805219800; 55558008700; 7406200149
Rapid detection of collapsed built-up structures using postevent VHR in earthquake-affected areas
(2011) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 6049488, pp. 1870 - 1873, Cited 1 times.
DOI: 10.1109/IGARSS.2011.6049488
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80955122663&doi=10.1109%2FIGARSS.2011.6049488&partnerID=40&md5=d55cf0c98b2d6e7943c799fe856dc114

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: Rapid detection of collapsed built-up structures is crucial for disaster mitigation in earthquake-affected areas. This paper proposes a method on detecting collapsed built-up structures using only post-event images. Its essence is to track and detect debris of collapsed built-up structures using features obtained through the derivative morphological profile. Experiments are carried out on images of the 2008 Wenchuan earthquake. Results show that the method can extract the debris of collapsed built-up structures in an effective and efficient way and is useful for rapid damage assessment. © 2011 IEEE.
AUTHOR KEYWORDS: Airborne Images; Collapsed Buildings; DMP; GLCM; SVM
INDEX KEYWORDS: Airborne images; Collapsed Buildings; DMP; GLCM; SVM; Damage detection; Debris; Earthquakes; Geology; Remote sensing; Structures (built objects)
REFERENCES: Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
Earthquake, (1993); 
Journal of Natural Disasters, (2002); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
Pesaresi, Martino, Post-conflict reconstruction assessment using image morphological profile and fuzzy multicriteria approach on 1-m-resolution satellite data Application test on the Koidu village in Sierra Leone, Africa, (2007); 
Gamba, Paolo Ettore, Rapid damage detection in the bam area using multitemporal SAR and exploiting ancillary data, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1582-1589, (2007); 
Turker, Mustafa, Building-based damage detection due to earthquake using the watershed segmentation of the post-event aerial images, International Journal of Remote Sensing, 29, 11, pp. 3073-3089, (2008); 
Chini, Marco, Exploiting SAR and VHR optical images to quantify damage caused by the 2003 bam earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 145-152, (2009); 
Pesaresi, Martino, A new approach for the morphological segmentation of high-resolution satellite imagery, IEEE Transactions on Geoscience and Remote Sensing, 39, 2, pp. 309-320, (2001); 
Benediktsson, Jón Atli, Classification and feature extraction for remote sensing images from urban areas based on morphological transformations, IEEE Transactions on Geoscience and Remote Sensing, 41, 9 PART I, pp. 1940-1949, (2003)
SPONSORS: Inst. Electr. Electron. Eng. Geosci., Remote Sens. Soc. (IEEE GRSS)
CONFERENCE NAME: 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CONFERENCE DATE: 2011-07-24 through 2011-07-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, H., Tuo, X., Zhang, G., Zhang, Z.
AUTHOR FULL NAMES: Wang, Honghui (16644207700); Tuo, Xianguo (6701499783); Zhang, Guiyu (57226216980); Zhang, Zhaoyi (56068835000)
16644207700; 6701499783; 57226216980; 56068835000
One dynamic hierarchical data acquisition model for pre-geohazards information acquisition
(2011) Communications in Computer and Information Science, 164 CCIS, pp. 15 - 22, Cited 0 times.
DOI: 10.1007/978-3-642-24999-0_3
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80655125507&doi=10.1007%2F978-3-642-24999-0_3&partnerID=40&md5=55b88cd314c55e3cbee90fcab9b672dd

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: In recent years, the geohazards are very serious all over the world, especially in China such as the Wenchuan earthquake-trriggered geohazards and Zhouqu debris flows. As one of the effective and inexpensive approaches, pre-geohazards information monitoring technology is being more and more valued and has attached lots of researchers' interests. Some modern information technologies are adopted to develop the geohazards equipments such as GPRS/GSM/GPS, WSN, and MEMS and the effects are obvious. However, almost most monitoring equipments use fixed-period sampling model which has caused some conflicts among the data redundancy, data integrity, communication costs and the system power consumptions. Thus, one dynamic hierarchical data acquisition (DHDA) model according to the geohazard development characteristics is proposed and the implementation technology is described. Finally, one case study about the model application is developed in the Panzhihua Airport Landslide, China. The results have evinced the DHDA model is effective for pre-geohazards information acquisition. © 2011 Springer-Verlag.
AUTHOR KEYWORDS: Early warning; Geohazards; Information acquisition; Landslide displacement; Monitoring
INDEX KEYWORDS: Acquisition models; Communication cost; Data integrity; Data redundancy; Debris flows; Early warning; Geohazards; Hierarchical data; Information acquisitions; Information monitoring; Model application; Monitoring equipment; Sampling model; Computer science; Data communication equipment; Debris; Information technology; Landslides; Hazards
REFERENCES: Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Airport Construction, (2008); 
Sassa, Kyoji, Preface for the thematic issue "Early Warning of Landslides, Landslides, 7, 3, pp. 217-217, (2010); 
Uchimura, Taro, Simple monitoring method for precaution of landslides watching tilting and water contents on slopes surface, Landslides, 7, 3, pp. 351-357, (2010); 
Yin, Yueping, Real-time monitoring and early warning of landslides at relocated Wushan Town, the Three Gorges Reservoir, China, Landslides, 7, 3, pp. 339-349, (2010); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Landslides, (2005)
CONFERENCE NAME: 2011 2nd International Conference on Theoretical and Mathematical Foundations of Computer Science, ICTMF 2011
CONFERENCE DATE: 2011-05-05 through 2011-05-06
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, X., Yang, W., Ao, T., Li, H., Chen, W.
AUTHOR FULL NAMES: Li, Xiaodong (36598707900); Yang, Wunian (7407756597); Ao, Tianqi (8100679900); Li, Hongxia (57194831467); Chen, Wenqing (55575918400)
36598707900; 7407756597; 8100679900; 57194831467; 55575918400
An improved approach of information extraction for earthquake-damaged buildings using high-resolution imagery
(2011) Journal of Earthquake and Tsunami, 5 (4), pp. 389 - 399, Cited 27 times.
DOI: 10.1142/S1793431111001157
https://www.scopus.com/inward/record.uri?eid=2-s2.0-82555194630&doi=10.1142%2FS1793431111001157&partnerID=40&md5=5afb7889eb255d7e1d727ce1e84984d6

AFFILIATIONS: College of Water Resources and Hydropower, Sichuan University, Chengdu, Sichuan, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China; College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: The development of remote sensing technology, especially the availability of high-resolution satellite imagery, has been applied to building recognition, hazard investigation and rapid pre-evaluation in post-earthquake management. Existing pixel-oriented approaches which are commonly used for satellite high-resolution imagery have limitations in information extraction, ground object classification, and processing speed. This paper presents an object-oriented method to extract earthquake-damaged building information using high-resolution remote sensing imagery of the 5.12 Wenchuan Earthquake. This method segmented the whole image into non-intersecting pieces of image objects, and then classified these pieces to extract damaged/undamaged buildings using image features such as spectral characters, textures, shapes, and their contexts. The results show a higher-precision classification than conventional methods. © 2011 World Scientific Publishing Company. © World Scientific Publishing Company.
AUTHOR KEYWORDS: Building seismic damage; high-resolution imagery; image segmentation; information extraction; object-oriented
REFERENCES: Angewandte Geographische Informationsverarbeitung Xii, (2000); 
Benz, Ursula Caroline, Multi-resolution, object-oriented fuzzy analysis of remote sensing data for GIS-ready information, ISPRS Journal of Photogrammetry and Remote Sensing, 58, 3-4, pp. 239-258, (2004); 
Ecognition User Guide, (2004); 
Gamba, Paolo Ettore, Rapid damage detection in the bam area using multitemporal SAR and exploiting ancillary data, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1582-1589, (2007); 
Haralick, Robert Martin, Image segmentation techniques., Computer Vision, Graphics, and Image Processing, 29, 1, pp. 100-132, (1985); 
Kaya, Sinasi, Post-earthquake building collapse: A comparison of government statistics and estimates derived from SPOT HRVIR data, International Journal of Remote Sensing, 26, 13, pp. 2731-2740, (2005); 
Saito, Keiko, Using High-Resolution Satellite Images for Post-Earthquake Building Damage Assessment: A Study Following the 26 January 2001 Gujarat Earthquake, Earthquake Spectra, 20, 1, pp. 145-169, (2004); 
Liu, Jiahang, Automatic recognition of damaged town buildings caused by earthquake using remote sensing information: Taking the 2001 Bhuj, India, earthquake and the 1976 Tangshan, China, earthquake as examples, Acta Seismologica Sinica English Edition, 17, 6, pp. 686-696, (2004); 
Matsuoka, Masashi, Use of satellite SAR intensity imagery for detecting building areas damaged due to earthquakes, Earthquake Spectra, 20, 3, pp. 975-994, (2004); 
Matsuoka, Masashi, Building damage mapping of the 2003 Bam, Iran, earthquake using Envisat/ASAR intensity imagery, Earthquake Spectra, 21, SUPPL. 1, pp. S285-S294, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Dai, F., Xiwei, X.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Dai, Fuchu (7102055666); Xiwei, Xu (8246843900)
35184309900; 7102055666; 8246843900
Earthquake triggered landslide susceptibility evaluation based on GIS platform and weight-of-evidence modeling
(2011) Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36 (6), pp. 1155 - 1164, Cited 23 times.
DOI: 10.3799/dqkx.2011.122
https://www.scopus.com/inward/record.uri?eid=2-s2.0-82555177364&doi=10.3799%2Fdqkx.2011.122&partnerID=40&md5=b562a183c580bd7270c69f971a063548

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Wenchuan earthquake triggered tens of thousands of landslides. Eight factors that influence landslide occurrence, including seismic intensity, lithology, slope angle, faults, elevation, slope aspect, drainages, and roads were created in raster data format base on geographical information system (GIS) and remote sensing (RS) technologies. The landslide hazard map was derived by using weight-of-evidence modeling. Earthquake-induced landslide susceptibility zonings of other eight impact factor combination categories were analyzed and mapped one after another, using GIS raster analysis methods. The eight different impact factor combinations analysis suggests that seismic intensity play an important role in determining the landslide susceptibility index value, while geological, geomorphological, and human-related factors only play minor roles. The resulting susceptibility map was divided into five categories, i.e. extremely high, high, moderate, low, and extremely low by using Natural Breaks law. The validation results show satisfactory agreement between the susceptibility map and the existing data on landslide distributions in the form of area under curve (AUC) up to 81.855%. The area with extremely high and high susceptibility accounts for about 11 255.93km2, 23.12% of the study area, including landslide areas of 521.98 km2, 73.36% of all landslide occurrence areas.
AUTHOR KEYWORDS: Geographic information systems (GIS); Landslide; Remote sensing (RS); Susceptibility evaluation; Weight-of-evidence; Wenchuan earthquake
INDEX KEYWORDS: Analysis method; Geographical information systems; Impact factor; Index values; Landslide hazard; Landslide susceptibility; Raster data; Seismic intensity; Slope angles; Slope aspect; Study areas; Validation results; Weight-of-evidence; Wenchuan Earthquake; Earthquakes; Geographic information systems; Information systems; Lithology; Remote sensing; Landslides
REFERENCES: Agterberg, Frederik P., Combining indicator patterns in weights of evidence modeling for resource evaluation, Nonrenewable Resources, 1, 1, pp. 39-50, (1992); 
Statistical Applications in the Earth Sciences, (1989); 
Journal of Engineering Geology, (2009); 
Cheng, Qiuming, Application of weights of evidence method for assessment of flowing wells in the greater Toronto area, Canada, Natural Resources Research, 13, 2, pp. 77-86, (2004); 
Conoscenti, Christian, GIS analysis to assess landslide susceptibility in a fluvial basin of NW Sicily (Italy), Geomorphology, 94, 3-4, pp. 325-339, (2008); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Dahal, Ranjan Kumar, GIS-based weights-of-evidence modelling of rainfall-induced landslides in small catchments for landslide susceptibility mapping, Environmental Geology, 54, 2, pp. 311-324, (2008); 
Dahal, Ranjan Kumar, Predictive modelling of rainfall-induced landslide hazard in the Lesser Himalaya of Nepal based on weights-of-evidence, Geomorphology, 102, 3-4, pp. 496-510, (2008); 
Daneshfar, Bahram, Spatial relationships between natural seismicity and faults, southeastern Ontario and north-central New York state, Tectonophysics, 353, 1-4, pp. 31-44, (2002); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, P., Tao, X.-X., Wang, X.-Z.
AUTHOR FULL NAMES: Li, Ping (57199006004); Tao, Xiaxin (7202692300); Wang, Xinzheng (49362308000)
57199006004; 7202692300; 49362308000
Internet information aided disaster assessment of great earthquake
(2011), 1, art. no. 6030229, pp. 388 - 391, Cited 0 times.
DOI: 10.1109/ITAIC.2011.6030229
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80054741221&doi=10.1109%2FITAIC.2011.6030229&partnerID=40&md5=7b20d9a2d52f024f11f187d903bef789

AFFILIATIONS: Bridge Technology Research Center, Ministry of Transport of the People's Republic of China, Beijing, Beijing, China; School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China; Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
ABSTRACT: The information on Internet is distributing in a large space scope and can be almost updated in real time at a short time period; especially, as information highway, Internet is a cheap information source, it costs less workload and time to collect information from Internet, and it can play a helpful role in disaster mitigation. The 5.12 Wenchuan earthquake is taken as a case study in this paper to develop a set of methods to aid the disaster assessment of the great earthquake from internet information. Firstly, the information of the damaged area was collected successively after the shock that were released on Internet website of the authoritative organization with data mining technology. The information was then analyzed, arranged and classified into three types, the information on damage distribution, the statistic data on death and injures, and those on building collapse rate in residential areas assessed by the remote sensing data. This information was further translated into information based intensity, and the locations of those residential areas with information based intensity were searched out from the fundamental geographic information database, and were stored into database together. The isoseismals were constructed by GIS spatial modeling tools from the experiential intensity attenuation relationships. A Human-computer interactive method was developed to improve the isoseismals successively by the data of information based intensity. The results at several time periods were compared with the ground survey which published a couple of months later, and showed that the isoseismals were improved step by step closely to the survey with the information amount increasing. On the 12th day after the earthquake, the improved isoseismals was already quite similar with the survey. The result can roughly show the actual damage situation, and provide quickly a support to the disaster relief. © 2011 IEEE.
AUTHOR KEYWORDS: disaster assessment; information based intensity; isoseismals; web information extraction
INDEX KEYWORDS: Building collapse; Damage distribution; Damaged area; Data mining technology; Disaster mitigation; Disaster relief; Geographic information; Great earthquake; Ground surveys; Human-computer; Information amount; information based intensity; Information sources; Interactive methods; Internet information; isoseismals; Large spaces; Real time; Remote sensing data; Residential areas; Spatial modeling tools; Statistic data; Step-by-step; Time-periods; Web information extraction; Wenchuan Earthquake; Artificial intelligence; Damage detection; Disaster prevention; Earthquakes; Geographic information systems; Information technology; Internet; Population statistics; Rating; Remote sensing; Surveys; Telecommunication networks; User interfaces; Data mining
REFERENCES: Seismic Intensity Survey Scale GB T 17742 1999, (2011); 
Earthquake Research in China, (1991); 
Sichuan Earthquake, (1993); 
Technology for Earthquake Disaster Prevention, (2008); 
undefined, (2011); 
China Reports Student Toll for Quake, (2011); 
Casualties of the Wenchuan Earthquake, (2012); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011)
SPONSORS: IEEE Beijing Section, Chongqing Computer Federation, Chongqing University, Southwest University, Chongqing Three Gorges University
CONFERENCE NAME: 2011 6th IEEE Joint International Information Technology and Artificial Intelligence Conference, ITAIC 2011
CONFERENCE DATE: 2011-08-20 through 2011-08-22
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Xue, D.-J., He, Z., Zhang, X.-F., Zhang, D.-H.
AUTHOR FULL NAMES: Xue, Dongjian (36816510500); He, Zhengwei (7403885268); Zhang, Xuefeng (37007238900); Zhang, Donghui (59781917100)
36816510500; 7403885268; 37007238900; 59781917100
Analysis of secondary geohazard after "5.12" earthquake; a case study of Qingchuan and Pingwu counties
(2011) Journal of Natural Disasters, 20 (5), pp. 162 - 168, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863159135&partnerID=40&md5=730303f8f23e856603b2b5df7e0ac504

AFFILIATIONS: College of Information Engineering, Chengdu University of Technology, Chengdu, China; College of Earth Sciences, Chengdu University, Chengdu, Sichuan, China
ABSTRACT: The "5.12" Wenchuan earthquake induces a large number of secondary geohazards, causing large - scale mountain landslide, collapse, debris flow, barrier lakes and other secondary disasters. The earthquake has caused people's life and property to loss heavily. Through the ground investigation of basic geological, hydrological and meteorological conditions, etc., in Pingwu and Qingchuan regarded multi -source remote sensing data as the information sources and combined with 3S, the paper interprets the secondary geohazard and potential geohazard body, and furthermore talks about occurrence and distribution of secondly geohazard after-earthquake. The findings should be good reference for the reconstruction and prevention for disaster-prone area and the mechanism on disaster remote sensing research frequent earthquakes.
AUTHOR KEYWORDS: Earthquake; Geohazard; Remote sensing image
INDEX KEYWORDS: data set; debris flow; earthquake mechanism; geological hazard; landslide; remote sensing; research work; satellite data; satellite imagery; seismic hazard; Sichuan earthquake 2008; China; Pingwu; Qingchuan; Sichuan
REFERENCES: Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, X.-R., Hu, Y.-X., Ge, H., Qi, D.-H.
AUTHOR FULL NAMES: Liu, Xinrong (14619293300); Hu, Yuanxin (56162991000); Ge, Hua (59831527900); Qi, Dahe (55777886400)
14619293300; 56162991000; 59831527900; 55777886400
Analyses of earthquake-induced landslide inventory in Yingxiu meizoseismal area of 5.12 Wenchuan earthquake
(2011) Chongqing Daxue Xuebao/Journal of Chongqing University, 34 (10), pp. 86 - 96, Cited 1 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-81355135072&partnerID=40&md5=e9e218524559325cb6817b2139ff3fa5

AFFILIATIONS: College of Civil Engineering, Chongqing University, Chongqing, China; Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing, China; China Geological Survey, Beijing, Beijing, China
ABSTRACT: A number of landslides were triggered by the Wenchuan earthquake on May 12 2008. The damage caused by these landslides was even more than that by earthquake. Systematic landslides inventory, as a basic technique for landslide study, can provide applicable data to quantify the study of landslides. A lot of earthquake-induced landslides were concentrated in Yingxiu meizoseismal area of 5.12 Wenchuan Earthquake. By means of post-earthquake aerial photo and satellite imagery interpretation and field investigation, this paper gets the information including locations, types and morphometry about 1948 earthquake-induced landslides within the Yingxiu Meizoseismal area (about 109.3 km2) and inventoried them with GIS software. Then, overlay analyses are used between these landslides inventory data and environmental factors such as slope aspect, slope angle, distance from ridge, geologic units and lithology, distance from epicentre and seismogenic fault. The results show that: Landslides are triggered by earthquake scatter predominantly in the range of 30°~50°, and the landslide density is positively correlated with slope angle. Areas nearby ridge are of high landslide density indicating that amplification effect of ridge on seismic wave is an important reason of slope failure. Earthquake-induced landslide development level in Pengguan complex is higher than that in sedimentary petrologic province. Landslide density is the single exponential negative correlation with distance from epicentre and seismogenic fault indicating that earthquake-induced landslide development level in hanging wall of seismogenic fault is higher than that in footwall, and the results predicted by regression correlation agree with the existing research findings.
AUTHOR KEYWORDS: 5.12 Wenchuan earthquake; Earthquake-induced landslide inventory; Statistical analysis; Yingxiu merzoseismal area
INDEX KEYWORDS: Aerial photos; Earthquake-induced landslide inventory; Environmental factors; Epicentre; Field investigation; Geologic units; GIS software; Imagery interpretation; Inventory data; Meizoseismal areas; Morphometry; Negative correlation; Overlay analysis; Seismogenic faults; Slope angles; Slope aspect; Slope failure; Wenchuan Earthquake; Yingxiu merzoseismal area; Landslides; Lithology; Satellite imagery; Statistical methods; Earthquakes
REFERENCES: Malamud, Bruce D., Landslide inventories and their statistical properties, Earth Surface Processes and Landforms, 29, 6, pp. 687-711, (2004); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Jibson, Randall W., Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002, Engineering Geology, 83, 1-3, pp. 144-160, (2006); 
Jibson, Randall W., Landslides triggered by the 2002 Denali fault, Alaska, earthquake and the inferred nature of the strong shaking, Earthquake Spectra, 20, 3, pp. 669-691, (2004); 
Inventory of Landslides Triggered by the 1994 Northridge California Earthquake, (1995); 
Harp, Edwin L., Landslides triggered by the 1994 Northridge, California, earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S319-S332, (1996); 
Proc Landslides, (1996); 
Kieffer, Daniel Scott, Landslides triggered by the 2004 Niigata Ken Chuetsu, Japan, earthquake, Earthquake Spectra, 22, SUPPL. 1, pp. S47-S73, (2006); 
Jibson, Randall W., Some observations of landslides triggered by the 29 April 1991 Racha earthquake, Republic of Georgia, Bulletin of the Seismological Society of America, 84, 4, pp. 963-973, (1994); 
Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fan, J., Li, X., Guo, F., Guo, X.
AUTHOR FULL NAMES: Fan, Jianrong (8727506000); Li, Xiuzhen (56237865700); Guo, Fenfen (55417286500); Guo, Xiang (57198726323)
8727506000; 56237865700; 55417286500; 57198726323
Empirical-statistical models based on remote sensing for estimating the volume of landslides induced by the Wenchuan earthquake
(2011) Journal of Mountain Science, 8 (5), pp. 711 - 717, Cited 9 times.
DOI: 10.1007/s11629-011-2133-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052888554&doi=10.1007%2Fs11629-011-2133-4&partnerID=40&md5=a11f165853a1e7eb08017cee936be71c

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan Ms 8. 0 earthquake on May 12, 2008 induced a huge number of landslides. The distribution and volume of the landslides are very important for assessing risks and understanding the landslide - debris flow - barrier lake - bursts flood disaster chain. The number and the area of landslides in a wide region can be easily obtained by remote sensing technique, while the volume is relatively difficult to obtain because it requires some detailed geometric information of slope failure surface and sub-surface. Different empirical models for estimating landslide volume were discussed based on the data of 107 landslides in the earthquake-stricken area. The volume data of these landslides were collected by field survey. Their areas were obtained by interpreting remote sensing images while their apparent friction coefficients and height were extracted from the images unifying DEM (digital elevation model). By analyzing the relationships between the volume and the area, apparent friction coefficients, and the height, two models were established, one for the adaptation of a magnitude scale landslide events in a wide range of region, another for the adaptation in a small scope. The correlation coefficients (R2) are 0. 7977 and 0. 8913, respectively. The results estimated by the two models agree well with the measurement data. © 2011 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: 5.12 Wenchuan earthquake; Estimation model; Landslides; Remote sensing; Volume
REFERENCES: Journal of Mountain Science, (2008); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Journal of Mountain Science, (2008); 
Galli, Mirco, Comparing landslide inventory maps, Geomorphology, 94, 3-4, pp. 268-289, (2008); 
Guzzetti, Fausto, Power-law correlations of landslide areas in central Italy, Earth and Planetary Science Letters, 195, 3-4, pp. 169-183, (2002); 
Guzzetti, Fausto, Landslide volumes and landslide mobilization rates in Umbria, central Italy, Earth and Planetary Science Letters, 279, 3-4, pp. 222-229, (2009); 
Huang, Runqiu, Mechanism and geomechanical modes of landslide hazards triggered by Wenchuan 8.0 earthquake, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, 6, pp. 1239-1249, (2009); 
Liu, Jinfeng, Identification of potential sites of debris flows in the upper Min River drainage, following environmental changes caused by the Wenchuan earthquake, Journal of Mountain Science, 7, 3, pp. 255-263, (2010); 
Northwestern Seismological Journal, (1996)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Hu, Y., Wang, J., Zhu, J., Ren, D.
AUTHOR FULL NAMES: Hu, Yi (56163090200); Wang, Jinfeng (55868825200); Zhu, Jun (56215097100); Ren, Dan (43161366800)
56163090200; 55868825200; 56215097100; 43161366800
Mapping under-five mortality in the Wenchuan earthquake using hierarchical Bayesian modeling
(2011) International Journal of Environmental Health Research, 21 (5), pp. 364 - 371, Cited 5 times.
DOI: 10.1080/09603123.2011.560250
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959598061&doi=10.1080%2F09603123.2011.560250&partnerID=40&md5=8eafe891d794427a17a192ca947633a0

AFFILIATIONS: School of Earth Science and Mineral Resources, School of the Earth Sciences and Resources, Beijing, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; National Office for Maternal and Child Health Surveillance, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: More than two years after the 2008 earthquake in Wenchuan, China, the total number of lives lost remains unclear, particularly for children under five years old. Mortality for this age group can be estimated using a variety of techniques, but sample proportion estimates may be unreliable in areas with low populations of children under five. To address this problem, we propose a hierarchical Bayesian model to map the distribution of under-five mortality in Wenchuan at the township scale. This model is based on conditional distributions for data conditioned on a spatial process and parameters to capture uncertainties usually identified as either spatially-correlated effects or heterogeneity effects. The method was adapted to obtain reliable estimates of the under-five mortality rate in townships with low under-five populations. The approach was compared to other models and, despite some limitations, was found to outperform other methods in its smoothing effect as well as in exploration of other aspects of spatial patterns. © 2011 Taylor & Francis.
AUTHOR KEYWORDS: earthquake; Geographic Information System (GIS); Hierarchical Bayesian (HB); model; smoothing; under-five mortality rate
INDEX KEYWORDS: age class; Bayesian analysis; child mortality; correlation; earthquake magnitude; GIS; heterogeneity; hierarchical system; mapping method; Sichuan earthquake 2008; smoothing; spatial analysis; article; Bayes theorem; China; earthquake; groups by age; human; mortality; Bayes Theorem; Child, Preschool; Disasters; Earthquakes; Geographic Information Systems; Humans; Models, Statistical; Sichuan; Wenchuan
REFERENCES: Categorical Data Analysis, (2002); 
Bernardinelli, Luisa, Empirical bayes versus fully bayesian analysis of geographical variation in disease risk, Statistics in Medicine, 11, 8, pp. 983-1007, (1992); 
Journal of the Royal Statistical Society Series B, (1974); 
Journal of the Royal Statistical Society Series A, (1991); 
Models for Ecological Data an Introduction, (2007); 
Clayton, David F., Empirical Bayes estimates of age-standardized relative risks for use in disease mapping, Biometrics, 43, 3, pp. 671-681, (1987); 
Gelman, Andrew E., All maps of parameter estimates are misleading, Statistics in Medicine, 18, 23, pp. 3221-3234, (1999); 
Spatial Data Analysis Theory and Practice, (2003); 
Johnson, Glen D., Small area mapping of prostate cancer incidence in New York State (USA) using fully Bayesian hierarchical modelling, International Journal of Health Geographics, 3, (2004); 
Rushton, Gerard, Exploratory spatial analysis of birth defect rates in an urban population, Statistics in Medicine, 15, 7-9, pp. 717-726, (1996)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tang, C., Zhu, J., Qi, X., Ding, J.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Zhu, Jing (55704611000); Qi, Xin (35932814100); Ding, Jun (55463437900)
35932953300; 55704611000; 35932814100; 55463437900
Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event: A case study in the Beichuan area of China
(2011) Engineering Geology, 122 (1-2), pp. 22 - 33, Cited 233 times.
DOI: 10.1016/j.enggeo.2011.03.013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052386953&doi=10.1016%2Fj.enggeo.2011.03.013&partnerID=40&md5=cf742e02e2bfd92041d148305b46f0d9

AFFILIATIONS: State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan earthquake on May 12, 2008 triggered massive landslides and a subsequent, strong rainfall prompted the development of new landslides as well as the reactivation of some pre-existing landslides. The highest seismic intensity zone of the Wenchuan earthquake in Beichuan, China was selected as a case study to analyze the influence of the earthquake and the subsequent, heavy rains on landslide evolution. We selected this study area (414km2) since it was close to the coseismic surface rupture and because it suffered strong ground motion. Based on the interpretation of high-resolution aerial photographs and remote sensing imagery combined with field investigation, 40 pre-earthquake landslides and 2221 coseismic landslides were identified with total landslide areas of 2.68km2 and 30.81km2, respectively. There were 134 large (over 50,000m2), co-seismic landslides that covered a surface area of 15.54km2 and represented approximately 50.4% of the total area of the co-seismic landslides. The coseismic landslides were mainly located on the hanging wall of the causative fault and on the steep, valley sides of the Jian River and its tributaries. A strong rainfall event occurred four months after the Wenchuan earthquake and induced 969 new landslides (which covered a 6.90km2 area) and enlarged 169 existing landslides (2.48km2). The landslides were identified in SPOT5 images. Ultimately, we found that earthquake tremors and the subsequent rainstorm severely disturbed the surface strata, resulting in a large number of landslides. © 2011 Elsevier B.V.
AUTHOR KEYWORDS: Evolution; Landslide; Rainstorm; Remote sensing imagery; Wenchuan earthquake
INDEX KEYWORDS: Aerial Photographs; Coseismic surface rupture; Evolution; Field investigation; Heavy rains; High resolution; Rainfall event; Rainstorm; Remote sensing imagery; Seismic intensity; Strong ground motion; Study areas; Surface area; Wenchuan Earthquake; Earthquakes; Photography; Rain; Remote sensing; Storms; Landslides; aerial photography; coseismic process; fault; ground motion; hanging wall; imagery; landform evolution; landslide; rainfall; rainstorm; seismic zone; Sichuan earthquake 2008; SPOT; trigger mechanism; Beichuan; China; Sichuan
REFERENCES: Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010); 
Ioseismal Map of the Wenchuan Earthquake, (2010); 
Regional Geological Map of Sichuan Province 1 200 000, (2001); 
Cruden, David M., Landslide types and processes, Special Report - National Research Council, Transportation Research Board, 247, pp. 36-75, (1996); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Dai, Fuchu, Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China, Journal of Asian Earth Sciences, 40, 4, pp. 883-895, (2011); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Harp, Edwin L., Landslides triggered by the 1994 Northridge, California, earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S319-S332, (1996); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Jibson, Randall W., A method for producing digital probabilistic seismic landslide hazard maps, Engineering Geology, 58, 3-4, pp. 271-289, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Du, J., Wang, C., Peng, S., Chen, P.
AUTHOR FULL NAMES: Du, Jun (57217331021); Wang, Chao (57219234605); Peng, Shanling (55462102800); Chen, Panpan (55490253700)
57217331021; 57219234605; 55462102800; 55490253700
Assessment of post-earthquake secondary geological hazard risk based on GIS
(2011), art. no. 5981134, Cited 1 times.
DOI: 10.1109/GeoInformatics.2011.5981134
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052378016&doi=10.1109%2FGeoInformatics.2011.5981134&partnerID=40&md5=550fc94e23314d0cd90d2a35dd74a3e0

AFFILIATIONS: Henan Key Laboratory of Remote Sensing and GIS, Henan Academy of Sciences, Zhengzhou, Henan, China; Henan Key Laboratory of Remote Sensing, Henan Academy of Sciences, Zhengzhou, Henan, China
ABSTRACT: The strong effect of ground damage and the serious earthquake-induced geological disasters are the notable features of Wenchuan earthquake. The distribution of earthquake-induced geological disasters in the earthquake is closely related to the distribution of earthquake fault, at the same time, it's also influenced and controlled by the physical geography, lithology, geological structure and human activities. The paper systematically generalizes the development characteristics, formation conditions and inducing factors of geological disasters combining with analysis of site conditions in Beichuan County. Analysis of correlative character between secondary geological disasters and the factor, and use information value method to evaluate the hazard of secondary geological disasters. The hazard map was obtained by summing up all geographical corresponding pixel values from each spatial layers according to information value. So geographical information systems combined with information value model can be quickly and effectively evaluate the spatial distribution and hazard of secondary geological disasters. © 2011 IEEE.
AUTHOR KEYWORDS: Geological information system (GIS); Hazard evaluation; Information value method; Secondary geological disasters; Wenchuan
INDEX KEYWORDS: Geological disaster; Geological information system (GIS); Hazard evaluation; Information value; Wenchuan; Damage detection; Disasters; Geographic information systems; Hazards; Information systems; Lithology; Rating; Earthquakes
REFERENCES: Journal of Geomechanics, (2006); 
Wang, Tao, Fault activity of the Wenchuan earthquake in Sichuan, China and seismic secondary geohazards, Geological Bulletin of China, 27, 11, pp. 1913-1922, (2008); 
Earth Science Frontiers, (2009); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Geographical Information Systems in Assessing Natural Hazards, (1995); 
Luzi, L., Slope vulnerability to earthquakes at subregional scale, using probabilistic techniques and geographic information systems, Engineering Geology, 58, 3-4, pp. 313-336, (2000); 
Miles, Scott B., Evaluation of seismic slope-performance models using a regional case study, Environmental and Engineering Geoscience, 6, 1, pp. 25-39, (2000); 
Miller, Daniel J., Deciphering large landslides: linking hydrological, groundwater and slope stability models through GIS, Hydrological Processes, 12, 6, pp. 923-941, (1998); 
Risk and Reliability in Ground Engineering, (1993); 
Carrara, Alberto, Use of GIS technology in the prediction and monitoring of landslide hazard, Natural Hazards, 20, 2-3, pp. 117-135, (1999)
SPONSORS: IEEE Geoscience and Remote Sensing Society (IEEE GRSS), East China Norm. Univ., Sch. Resour. Environ. Sci., Shanghai Urban Dev. Inf. Res. Cent., The Geographical Society of Shanghai, East China Univ. Sci. Technol., Bus. Sch.
CONFERENCE NAME: 2011 19th International Conference on Geoinformatics, Geoinformatics 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhou, G., Li, X.
AUTHOR FULL NAMES: Zhou, Guoliang (35957750400); Li, Xiaojun (55818809900)
35957750400; 55818809900
Characteristics of ground motion records in Zigong mountain array during "5.12" Wenchuan Earthquake
(2011), art. no. 5965671, pp. 5795 - 5798, Cited 0 times.
DOI: 10.1109/RSETE.2011.5965671
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052257789&doi=10.1109%2FRSETE.2011.5965671&partnerID=40&md5=fd18697f8925e26ec024494db79a65b6

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: Based on the strong ground motion data recorded at Zigong array during Wenchuan Earthquake on May 12, 2008, the characteristics of peak ground acceleration (PGA) and response spectrum are analyzed. The results indicate that the mountain topography greatly influences the seismic wave propagations. The horizontal PGA increases more greatly than the vertical PGA with increasing elevation of the mountain; however this increase is not monotonous and related to the features of local mountain topography. The influences of topography on acceleration response spectra mainly depend on the source frequency content. The high frequency content beyond 1 Hz of seismic waves has been amplified more greatly. And the results also indicate that the displace response spectra are almost uninfluenced by the mountain topography. © 2011 IEEE.
AUTHOR KEYWORDS: Earthquake effect; High frequency amplification; Mountain topography; Peak ground acceleration; Response spectrum
INDEX KEYWORDS: Acceleration response; Ground motions; High frequency; Mountain topography; Peak ground acceleration; Response spectra; Source frequency; Strong ground motion; Wenchuan Earthquake; Civil engineering; Differential amplifiers; Earthquake effects; Remote sensing; Seismic waves; Seismology; Topography; Landforms
REFERENCES: Earthquake Engineering Engineering Vibration, (1982); 
Earthquake Engineering and Engineering Vibration, (1980); 
Proceedings of Chinese Conference on Anniversary of Wenchuan Earthquake, (2009); 
Doctral Thesis of Institute of Mechanics Engineering, (2010); 
Earthquake Research in China, (1993); 
Lee, Shiannjong, Effects of topography on seismic-wave propagation: An example from Northern Taiwan, Bulletin of the Seismological Society of America, 99, 1, pp. 314-325, (2009); 
Journal of Engineering Geology, (2010); 
Northwestern Seismological Journal, (2009)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, Y., Zhang, Y., Ren, Y., Liu, Z., Liu, X., Wei, C.
AUTHOR FULL NAMES: Liu, Yalan (8937210700); Zhang, Yong (57196211469); Ren, Yuhuan (59157824300); Liu, Zhumei (49361845400); Liu, Xianglong (57192261548); Wei, Chengjie (7401658054)
8937210700; 57196211469; 59157824300; 49361845400; 57192261548; 7401658054
Study on highway debris flow hazard assessment in Wenchuan County
(2011), art. no. 5964611, pp. 1667 - 1670, Cited 0 times.
DOI: 10.1109/RSETE.2011.5964611
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052251209&doi=10.1109%2FRSETE.2011.5964611&partnerID=40&md5=af09e8b8366ebf51399ba68ee4411fae

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; China Academy of Transportation Sciences, Beijing, Beijing, China
ABSTRACT: Based on remote sensing and geographic information system technology, and hazard assessment methodologies, this paper focus on the study of debris flow hazard assessment in Wenchuan Count, and Yingxiu-Wenchuan highway, which is the part of National Highway No. 213 and No.317, and the lifeline for 5.12 Wenchuan Earthquake. Considering topography, geology, vegetation and land use patterns and etc, the synthetic evaluation factors for debris flow hazard assessment were operated by different layers and overlay analysis in GIS. Through comprehensive analysis of multifactor, the debris flow hazard areas in Wenchuan County were identified, and then the hazard regions along Yingxiu-Wenchuan highway were divided as well. The results show that debris flow hazard areas in Wenchuan County mainly distribute along National Highway No.213, and No.317. Furthermore, debris flow hazard areas distribute along Yingxiu-Wenchuan highway, and mainly locate in five towns: covers 4.5 km in Yingxiu Town, 10.5 km in Yinxing Town, 11 km in Caopo Town, 14 km in Mianchi Town, and 8 km in Weizhou Town. This paper provides technical support to the prevention of debris flow hazard for road construction and operation, to mitigation its harm on the highway in the study area. And it will lay the foundation for further study, the practical application and dissemination of assessment techniques. © 2011 IEEE.
AUTHOR KEYWORDS: Debris flow; GIS; Hazard assessment; Highway; Remote sensing; Wenchuan
INDEX KEYWORDS: Assessment technique; Comprehensive analysis; Debris flow hazards; Debris flows; Hazard Assessment; Hazard assessment methodologies; Highway; Land use pattern; Multi-factor; Overlay analysis; Study areas; Synthetic evaluation; Technical support; Wenchuan; Wenchuan Earthquake; Debris; Geographic information systems; Land use; Rating; Remote sensing; Hazards
REFERENCES: Journal of Natural Disasters, (2002); 
Chen, Yeying, Research on the law of highway debris flow moving in control structures, Chongqing Jianzhu Daxue Xuebao/Journal of Chongqing Jianzhu University, 28, 5, pp. 35-46, (2006); 
Research of Soil and Water Conservation, (2001); 
Journal of Chongqing Jiaotong University, (2004); 
Highway, (2007); 
Geology Disaster and Enviornment Protection, (2010); 
Provincial Department of Transportation Remote Sensing Surveying Report about Yingxiu Wenchuan Road, (2008); 
Journal of Mountain Science, (2009); 
Landslides Occurred in Yingxiu Town of Wenchuan County Highway are Blocked, (2010); 
Chinese Journal of Geological Hazard and Control, (2008)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Su, P.C., Liu, B., Cheng, Z., Zhao, Y.
AUTHOR FULL NAMES: Su, Pengcheng (55234493100); Liu, Bintao (35211116300); Cheng, Zunlan (18433736100); Zhao, Yan (56948210100)
55234493100; 35211116300; 18433736100; 56948210100
Remote sensing interpretation of debris flow material sources and its distribution characteristics in Miancu Gully after Wenchuan earthquake
(2011), art. no. 5965489, pp. 5214 - 5217, Cited 1 times.
DOI: 10.1109/RSETE.2011.5965489
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052221548&doi=10.1109%2FRSETE.2011.5965489&partnerID=40&md5=67e035ef990003a86fd1ced92ef9e456

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan earthquake has caused numerous landslides and avalanches as the sources for debris flows. A typical example is the Miancu Gully in Maoxian, where accumulates tremendous volume of loose solid materials that have formed 12 dammed lakes. Combining field surveys, Quickbird images (with spatial resolution of 0.61m) after the earthquake are used to identify the avalanches and landslides. Results show that there are 65 landslides and avalanches in the gully, amounting to area of 3.8×106m2· Among them there are 7 having area over 106m2. The 12 dammed lakes have a total area of 9.27 ×103 m2· The materials come mainly from the granite in the middle and the lower reaches, in volume of 1.56×107m3, and those from the upper reaches are shallow landslides, in volume of 1.87×106m 3· Combining with metrological and loose materials sources conditions, tendency of debris flow activity is analyzed and some advices are proposed for Miancu gully debris flow countermeasure. © 2011 IEEE.
AUTHOR KEYWORDS: Dammed lake; Debris flow; Material sources; Miancu Gully; Remote sensing interpretation; Wenchuan earthquake
INDEX KEYWORDS: Dammed lake; Debris flow; Miancu Gully; Remote sensing interpretation; Wenchuan Earthquake; Civil engineering; Earthquakes; Lakes; Landslides; Materials; Materials handling; Remote sensing; Debris
REFERENCES: Journal of Mountain Science, (2008); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009); 
Journal of Mountain Science, (2009); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Compilers of the Committee of Local Chronicles of Ma Wen Qiang Nationality Autonomous County in Aba Tibetan and Qiang Nationality Autonomous Prefecture in Sichuan Province, (1997)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, W., Wei, T., Luan, S.
AUTHOR FULL NAMES: Li, Wenlong (49361625600); Wei, Titi (50462524300); Luan, Shengji (15725722900)
49361625600; 50462524300; 15725722900
Study on environmental risk identification in post earthquake reconstruction and recovery at poor villages
(2011), art. no. 5964836, pp. 2558 - 2561, Cited 0 times.
DOI: 10.1109/RSETE.2011.5964836
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052218612&doi=10.1109%2FRSETE.2011.5964836&partnerID=40&md5=23d8cadd67f2bf2eef316e2b781a74de

AFFILIATIONS: College of Environmental Sciences and Engineering, Peking University, Beijing, China; School of Environment and Energy, Peking University, Beijing, China; Key Laboratory for Environmental and Urban Sciences, Peking University, Beijing, China
ABSTRACT: Through the field survey at the 20 selected poor villages in Wenchuan earthquake-stricken area, the researcher analyses the characteristics of poor villages and process of recovery and reconstruction, and comprehensively analyses the environmental risk that poor villages are faced with during post-quake reconstruction. This paper introduces the concept of environmental sensitive sites, develops the connotation of village environmental risk, and proposes the whole-process risk tree analysis (RTA) method for village-level. As an empirical analysis, the researcher employs the RTA method at one certain poor village in Gansu Province, and then puts forward pertinent environmental risk reduction strategy according to the identification results. © 2011 IEEE.
AUTHOR KEYWORDS: Environmental risk identification; Environmental sensitive sites; Poor village; Risk tree analysis
INDEX KEYWORDS: Empirical analysis; Environmental risks; Environmental sensitive sites; Field surveys; Gansu province; Poor village; Civil engineering; Earthquakes; Plant extracts; Remote sensing; Risk assessment; Risk analysis
REFERENCES: Research Report Released by Development Research Center of the State Council Unpublished, (2011); 
Issues in Agricultural Economy, (2004); 
China Emergency Rescue, (2009); 
Environmental Assessment Tutorial, (2002); 
Environmental Science Technology, (2008); 
Journal of Safety Science and Technology, (2006); 
Environmental Risk Assessment of Practical Techniques and Methods, (2000); 
Risk Management Theory and Tools, (2010)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, Y., Wang, J.
AUTHOR FULL NAMES: Huang, Yong (36679991800); Wang, Junjie (57215552777)
36679991800; 57215552777
Earthquake response of an arch bridge under near-fault ground motions
(2011), art. no. 5964478, pp. 1126 - 1129, Cited 0 times.
DOI: 10.1109/RSETE.2011.5964478
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052202806&doi=10.1109%2FRSETE.2011.5964478&partnerID=40&md5=5c63cb54d66a65a20097d045ebb947da

AFFILIATIONS: College of Civil Engineering, Tongji University, Shanghai, China; Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: During the Wenchuan earthquake in 2008, some of the arch bridges in the seismic zone were damaged. To assess the performance of arch bridge under near-fault ground motions, both experimental and numerical studies are conducted in this paper. Firstly, an ambient vibration test of a real typical arch bridge is made to measure the dynamic characteristics of the structure and calibrate the finite-element model. Then the earthquake response of the bridge is made using FE software MIDAS based on recorded ground motion in the Wenchuan earthquake. The study shows that the joint between deck and tie at 1/4 span and 3/4 span, the joint between beam and arch and middle of the beam are weak links under near-fault ground motions. © 2011 IEEE.
AUTHOR KEYWORDS: Ambient vibration test; Arch bridges; Seismic analysis; Typical earthquake damage; Wenchuan earthquake
INDEX KEYWORDS: Ambient vibration test; Dynamic characteristics; Earthquake response; FE software; Finite-element models; Ground motions; Made-to-measure; Near fault ground motion; Numerical studies; Seismic analysis; Seismic zones; Typical earthquake damage; Weak links; Wenchuan Earthquake; Arches; Civil engineering; Earthquakes; Finite element method; Religious buildings; Remote sensing; Vibration analysis; Arch bridges
REFERENCES: Guidelines for Seismic Design of Highway Bridges, (2008); 
Proceedings of Conference on Earthquake Engineering and Earthquake Disaster Reduction the 1 Anniversary of Wenchuan Earthquake, (2009); 
Journal of Earthquake Engineering and Engineering Vibration, (2008); 
Wenchuan Earthquake Acceleration Records Without Correction, (2008); 
Analysis of Seismic Damage of Engineering Structures in Wenchuan Earthquake, (2008); 
Kawashima, Kazuhiko, Damage of bridges in 2008 Wenchuan, China earthquake, Doboku Gakkai Ronbunshuu A, 65, 3, pp. 825-843, (2009)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Hu, J., Xie, L., Yang, Y.
AUTHOR FULL NAMES: Hu, Jinjun (8855436900); Xie, Lili (7402590289); Yang, Yongqiang (36941538300)
8855436900; 7402590289; 36941538300
Rupture diectivity effect in the 2008 ms 8.0 Wenchuan earthquake - An insight into strong ground motion and engineering damage
(2011), art. no. 5965506, pp. 5291 - 5294, Cited 1 times.
DOI: 10.1109/RSETE.2011.5965506
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052193129&doi=10.1109%2FRSETE.2011.5965506&partnerID=40&md5=d7524c6713c8b3e4ed13d91dd2cac6c2

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China
ABSTRACT: We study the near field earthquake ground motion records and engineering damage caused by the great 2008 Mw7.9 Sichuan Wenchuan earthquake. Statistical analysis indicates: Although the earthquake has a thrust faulting mechanism, the dominating unilateral rupture propagation caused a distinct rupture directivity effect both on ground motion recordings and on the engineering damage. In detail, (1) The peak ground acceleration (PGA) in the rupture forward direction is bigger than that of the backward direction, and the difference between the forward and backward depends on the closest rupture distance; (2) The mean response spectra in the forward direction is higher than that of the backward direction, especially for periods higher than 2 sec, and the maxim ratio of forward and backward average spectra may reache 4; (3) For strong ground motion duration, the difference between the forward and backward direction sometimes reaches 2-4 times on average; (4) The distribution of building collapse ratio and human mortality ratio in direction along and perpendicular to the fault strike are an additionally prove to the directivity effect. © 2011 IEEE.
AUTHOR KEYWORDS: Ground motion record; Rupture directivity; Wenchuan earthquake
INDEX KEYWORDS: Building collapse; Directivity effect; Fault strike; Ground motion recording; Ground motions; Human mortality; Near-field earthquakes; Peak ground acceleration; Response spectra; Rupture directivity; Rupture propagation; Sichuan; Strong ground motion; Thrust faulting; Wenchuan earthquake; Civil engineering; Earthquake effects; Remote sensing; Engineering
REFERENCES: Proceedings of the 14th World Conference on Earthquake Engineering, (2008); 
Directivity of Near Fault Ground Motion and Super Shear Rupture, (2009); 
Li, Xiaojun, Strong motion observations and recordings from the great Wenchuan Earthquake, Earthquake Engineering and Engineering Vibration, 7, 3, pp. 235-246, (2008); 
Wang, Zifa, A preliminary report on the Great Wenchuan Earthquake, Earthquake Engineering and Engineering Vibration, 7, 2, pp. 225-234, (2008); 
Li, Xiaojun, Preliminary analysis of strong-motion recordings from the magnitude 8.0 Wenchuan, China, Earthquake of 12 May 2008, Seismological Research Letters, 79, 6, pp. 844-854, (2008); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Sichuan Earthquake, (1994); 
Recent Developments in World Seismology, (2008); 
Seismology and Geology, (2008); 
Economic Loss Evaluation of the 2008 5 12 Wenchuan Earthquake, (2008)
SPONSORS: Nanjing University of Information Science and Technology, Peking University, Fudan University, Tsinghua University, Jilin University
CONFERENCE NAME: 2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011
CONFERENCE DATE: 2011-06-24 through 2011-06-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wu, L.-S., Yang, W., Li, L.
AUTHOR FULL NAMES: Wu, Li Sha (56127474100); Yang, Wunian (7407756597); Li, Li (55730912500)
56127474100; 7407756597; 55730912500
The application of 3S technologies in urban planning - Wenchuan earthquake reconstruction in Yingxiu
(2011) Wutan Huatan Jisuan Jishu, 33 (5), pp. 559 - 562, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84255170461&partnerID=40&md5=40e5175ce67d6ccf675d3b07cf00445f

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: 3S (RS, GIS and GPS) integration technology for urban planning provides a powerful tool. It has not only high precision and fast and real-time acquisition of various geological information but also can use GIS spatial data comprehensive analysis of powerful functions with all kinds of information united, contrast and comprehensive and compound, thus it can provide more abundant information such as the maps for urban planning. Taking the Wenchuan earthquake reconstruction of Yingxiu as an example, the application of aviation remote sensing image diagram in 2008, 2009 and 2010 to town planning land uses the status information extraction and establish relevant database, and utilizes the GIS software in the study area ecological environment comprehensive evaluation analysis, and then the this paper discusses 3S technique in urban planning and the construction of application.
AUTHOR KEYWORDS: Gis Technology; Gps Technology; Rs Technology; Urban Planning; Wenchuan Earthquake
INDEX KEYWORDS: data acquisition; GIS; GPS; imaging method; land use planning; reconstruction; remote sensing; Sichuan earthquake 2008; software; spatial data; urban planning; China; Sichuan; Yingxiu
REFERENCES: Environmental Modeling with GIS, (1993); 
Matějíček, Luboš, A GIS-based approach to spatio-temporal analysis of environmental pollution in urban areas: A case study of Prague's environment extended by LIDAR data, Ecological Modelling, 199, 3 SPEC. ISS., pp. 261-277, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Su, X., Zhang, X., Liu, S., Yang, S., Yang, J., Chen, Y., Xu, J.
AUTHOR FULL NAMES: Su, Xiaohui (57207731131); Zhang, Xiaodong (57202810216); Liu, Sanchao (34872973000); Yang, Siquan (54791765600); Yang, Jianyu (57056765100); Chen, Yanqing (37010926100); Xu, Jingyu (39262765200)
57207731131; 57202810216; 34872973000; 54791765600; 57056765100; 37010926100; 39262765200
Allocation and scheduling of relief materials based on GIS
(2011), art. no. 5969088, pp. 463 - 466, Cited 1 times.
DOI: 10.1109/ICSDM.2011.5969088
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052125131&doi=10.1109%2FICSDM.2011.5969088&partnerID=40&md5=2851fcd862af2501534940bc821ed20a

AFFILIATIONS: College of Information and Electrical Engineering, China Agricultural University, Beijing, China; National Committee Disaster Reduction, Ministry of Civil Affairs of the People's Republic of China, Beijing, China
ABSTRACT: The losses caused by natural disasters are increasing, especially in 21st century, the security and the losses increased. Responding natural disasters and reducing losses become an urgent task which facing all of humanity. The paper will propose an allocation method of relief materials for pre-disasters and a shortest-time and potential-considered scheduling model for post-disasters. The allocation method for relief materials considers service areas of the storehouse along roads and risk level of natural disasters. The scheduling model combines the basics of operation research and shortest path based on GIS. The methods based on GIS can directly show the distribution and the routes for scheduling. Then the paper will make an example against the backup of Wenchuan earthquake according to the current problems in order to relief the losses. © 2011 IEEE.
AUTHOR KEYWORDS: allocation of relief materials; GIS; natural disasters; scheduling model; service area of storehouse
INDEX KEYWORDS: Allocation methods; allocation of relief materials; Natural disasters; Operation research; Risk levels; scheduling model; Scheduling models; Service area; Shortest path; Wenchuan Earthquake; Data mining; Disasters; Scheduling; Geographic information systems
REFERENCES: Natural Disaster Risk Map in Our County Will Be Finished in the Next Year, (2010); 
Fiedrich, Frank, Optimized resource allocation for emergency response after earthquake disasters, Safety Science, 35, 1-3, pp. 41-57, (2000); 
Han, Yunjun, Optimal supply location selection and routing for emergency material delivery, pp. 1039-1044, (2007); 
Sheu, Juih-Biing, An emergency logistics distribution approach for quick response to urgent relief demand in disasters, Transportation Research Part E: Logistics and Transportation Review, 43, 6, pp. 687-709, (2007); 
Yi, Wei, A dynamic logistics coordination model for evacuation and support in disaster response activities, European Journal of Operational Research, 179, 3, pp. 1177-1193, (2007); 
Özdamar, Linet, Emergency logistics planning in natural disasters, Annals of Operations Research, 129, 1-4, pp. 217-245, (2004); 
Konstantinos G. Zografos, Konstantinos G., A decision support system for integrated hazardous materials routing and emergency response decisions, Transportation Research Part C: Emerging Technologies, 16, 6, pp. 684-703, (2008); 
Journal of Systems Engineering, (1999); 
Operations Research and Management Science, (2007); 
Journal of Harbin University of Commerce, (2007)
SPONSORS: The Chinese Academy of Science (CAS), National Natural Science Foundation of China (NSFC), Inst. Geogr. Sci. Nat. Resour. Res. Chin. Acad. Sci. (CAS), Fuzhou University, University of Calabria
CONFERENCE NAME: 2011 IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services, ICSDM 2011 - In Conjunction with 8th Beijing International Workshop on Geographical Information Science, BJ-IWGIS 2011
CONFERENCE DATE: 2011-06-29 through 2011-07-01
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Yu, H., Luo, Y., Zheng, Z.-J., Sun, Y.-L., Ma, Y.-W.
AUTHOR FULL NAMES: Yu, Hui (55515499400); Luo, Yong (57208197554); Zheng, Zhijun (46961578200); Sun, Yulian (38863137300); Ma, Yuewei (59044023500)
55515499400; 57208197554; 46961578200; 38863137300; 59044023500
Research on the distribution characteristics of secondary geological disasters induced by 5.12 earthquake in Wenchuan county based on RS and GIS
(2011) Proceedings of SPIE - The International Society for Optical Engineering, 8009, art. no. 80091C, Cited 3 times.
DOI: 10.1117/12.896302
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960888421&doi=10.1117%2F12.896302&partnerID=40&md5=ac042e479d60fb0e3e8a5c411cf0f3bc

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; The Geological Environment Monitoring Station, Chengdu, China
ABSTRACT: Field observation, remote sensing combined with GIS technique were adopted to analysis the spatial distribution characteristics of secondary geological disasters induced by Wenchuan earthquake. The study results show that: (1) The earthquake-damaged slash mostly distributed in the two sides of main fault zones, earthquake-affected areas and disaster density decreased with the increase of distance from the main fault. (2) The earthquake-damaged slash mostly distributed in seismic intensity of IX and above. The region with greater seismic intensity had larger disaster density. Collapse and landslide distributed in high seismic intensity zone. (3) Hard rocks were easily caused secondary geological disasters by seismic waves. (4) The earthquake damaged slash mostly distributed within 0.5 km away from the river and decreased with the increase of distance from river. Collapse and landslide often appear at valley and the steep slope which more than 40 degree. The biggest hazard density appeared at altitude between 2000 m and 2500 m. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
AUTHOR KEYWORDS: Disaster Density; Distribution Characteristics; Earthquake-damaged Slash; GIS; RS; Secondary Geological Disasters; Wenchuan Earthquake
INDEX KEYWORDS: Distribution characteristics; Earthquake-damaged Slash; Geological disaster; RS; Wenchuan Earthquake; Disasters; Image processing; Imaging systems; Landslides; Remote sensing; Seismic waves; Earthquakes
REFERENCES: Earth Science Frontiers, (2008); 
He, Honglin, Rupture of the MS8.0 Wenchuan earthquake along Baishahe River, Dizhen Dizhi, 30, 3, pp. 658-673, (2008); 
Tian, Shujun, Research on responsive mechanism between earthquake-induced mountain hazards and environmental background in typical region of Wenchuan Earthquake: A case study of Mianzhu County, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 209-215, (2009); 
Journal of Mountain Science, (2008); 
Journal of Engineering Geology, (2008); 
Seismology and Geology, (2008); 
Hosokawa, Masafiimi, Earthquake damage detection using remote sensing data, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2989-2991, (2007); 
Journal of Catastrophology, (2003); 
Acta Ecologica Sinica, (2001); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005)
SPONSORS: Int. Assoc. Comput. Sci. Inf. Technol. (IACSIT), Singapore Institute of Electronics
CONFERENCE NAME: 3rd International Conference on Digital Image Processing, ICDIP 2011
CONFERENCE DATE: 2011-04-15 through 2011-04-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Xu, C., Dai, F., Xiao, J.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Dai, Fuchu (7102055666); Xiao, Jianzhang (7402564381)
35184309900; 7102055666; 7402564381
Statistical analysis of characteristic parameters of landslides triggered by May 12, 2008 Wenchuan earthquake
(2011) Journal of Natural Disasters, 20 (4), pp. 147 - 153, Cited 19 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84455175865&partnerID=40&md5=060e5955b5d146bede3043cefbc78551

AFFILIATIONS: Chinese Earthquake Adinistration, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: On May 12, 2008, a catastrophic earthquake with moment magnitude of 8.0 struck the Sichuan Province of China. As of October 8, 2008, this earthquake claimed 69229 lives and injured 374643 people, with further 17923 listed as missing. By ues of aerial photographs and multi -source remote sensing imageries and field investigations, slope failures and catastrophic landslides induced by ground motion were extensively mapped. The Wenchuan earthquake triggered more than 48000 landslides over a broad area of about 48 700 km 2 in a pattern that is roughly located in the northeast direction of the epicentre, or roughly concentric about the macro -epicentre. The purpose of this paper is to make a statistical analysis of the characteristic parameters of Wenchuan earthquake - triggered landslides using two indices based on geographic information system (GIS) ; the landslide area (LA) and the landslide population (LP). We analyzed seven characteristic parameters of seismic landslides such as the formation lithology, slope angle, slip direction, elevation, seismic intonsity, hanging wall or footwall, and distances to earthquake causative fault. This study supports the view that (1) the lithology of sandstone, siltstone, phyllite, and limestone;(2) slope angle between 30° to 50°, especially between 35° to 45°; (3) perpendicular to earthquake causative fault, that is SEE direction; (4) elevation between 800m to 2000m, especially between 1000m to 1600m; (5) seismic intensity zones between VIII and XI; (6) hanging wall of earthquake causative fault; (7) distances to earthquake causative fault of 40km, especially 10km are high - incidence zones of Wenchuan earthquake - triggered landsliding.
AUTHOR KEYWORDS: Characteristic parameters; Geographic information systems (GIS); Landslide; Statistical analysis; Wenchuan earthquake
INDEX KEYWORDS: aerial photograph; earthquake magnitude; earthquake trigger; fault; GIS; ground motion; landslide; remote sensing; Sichuan earthquake 2008; slope failure; statistical analysis; China; Sichuan
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhong, X.M., Chen, W.-K., Hou, J.-R., Yuan, Z.-X.
AUTHOR FULL NAMES: Zhong, Xiumei (35732902300); Chen, Wenkai (55715972500); Hou, Jingrui (54583494400); Yuan, Zhongxia (14069331200)
35732902300; 55715972500; 54583494400; 14069331200
Distribution rules of geo-hazards induced by Wenchuan Earthquake
(2011) Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 33 (SUPPL. 1), pp. 349 - 353, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-82055184969&partnerID=40&md5=36dfa2d20b69f0261223e5a6e02cac5b

AFFILIATIONS: Lanzhou Institute of Seismology, China Earthquake Administration, Beijing, China; Key Laboratory of Loess Earthquake Engineering, China Earthquake Administration, Beijing, China; Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou, Gansu, China
ABSTRACT: Wenchuan Earthquake causes a large number of geo-hazards in Wudu District and Wenxian County of Gansu Province. After a field investigation and the interpretation of remote-sensing images taken after the earthquake, 993 earthquake-induced geo-hazards are obtained. Then, the distribution of these geo-hazards is investigated statistically using GIS techniques to determine how the occurrence of geo-hazards correlates with distance from the rivers, slopes, elevations and aspects. The main results of this research can be summarized as follows: (1) the geo-hazards triggered by earthquake show the feature of zonal distribution along the rivers; (2) the geo-hazards density increases with the increase of earth intensity; (3) the earthquake-induced geo-hazards have corresponding relationship with the elevation, and for most hazards occur below the elevation of 1000 to 2000 m; (4) the slope steepness is a main factor which controls the development of earthquake-induced geo-hazards and a vast majority of geo-hazards are distributed within the range of 10°to 40°; (5) aspect influences on the geo-hazards triggered by the Earthquake, and more hazards occur in aspect of due south and southeast.
AUTHOR KEYWORDS: Distribution rule; Earthquake-induced geo-hazard; GIS analysis; Wenchuan Earthquake
INDEX KEYWORDS: Distribution rule; Earthquake-induced geo-hazard; Field investigation; Gansu province; GIS analysis; Remote sensing images; Slope steepness; Wenchuan Earthquake; Earthquakes; Remote sensing; Hazards
REFERENCES: Journal of Geomechanics, (2006); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Engineering Geology, (2009); 
Northwestern Seismological Journal, (2010); 
Gansu Geology, (2009); 
Taylor Francis Group, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y.
AUTHOR FULL NAMES: Li, Yigang (55718906700)
55718906700
A preliminary study on searching key rescue target after mainshock based on high-resolution remote sensing image
(2011) Acta Seismologica Sinica, 33 (4), pp. 532 - 538, Cited 1 times.
DOI: 10.3969/j.issn.0253-3782.2011.04.012
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80054100252&doi=10.3969%2Fj.issn.0253-3782.2011.04.012&partnerID=40&md5=a7e72414dde9940848c2da5bcad76f34

AFFILIATIONS: National Earthquake Response Support Service, Beijing, Beijing, China
ABSTRACT: With the development of high-resolution satellite technology, lots of remote sensing data were applied to disaster assessment and relief. Based on the study on prioritizing search and rescue target using remote sensing image recognition, this paper described a way of how to select collapsed buildings from an earthquake affected area for search and rescue based on high-resolution remote sensing data analysis, including the rules and analysis flow. An example was given with the data acquried during the 2008 Wenchuan earthquake to discuss the analysis models detailedly.
AUTHOR KEYWORDS: High-resolution; Prioritizing model; Remote sensing image; Search and rescue target
INDEX KEYWORDS: disaster management; image analysis; numerical model; remote sensing; satellite data; search and rescue; Sichuan earthquake 2008
REFERENCES: IEEE Urban Remote Sensing Joinl Event 2007, (2007); 
Decision Making Based on Damage Evaluation for Search and Rescue Operations Ol, (2003); 
Structural Triage the Five Step Approach Ol, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Kun, D., Tianyu, L., Chao, C., Ming, T.
AUTHOR FULL NAMES: Kun, Du (57224803560); Tianyu, Long (47962662200); Chao, Cheng (50160996800); Ming, Tai (50161934900)
57224803560; 47962662200; 50160996800; 50161934900
Optimal layout of warning monitoring station in water distribution system in earthquake-prone area
(2011) Research Journal of Chemistry and Environment, 15 (2), pp. 768 - 771, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051891507&partnerID=40&md5=4eef2516c44d159702391cb824b16554

AFFILIATIONS: College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, China; Engineering Research Center for the Ecological Environment of the Three Gorges Reservoir Area, Ministry of Education of the People's Republic of China, Beijing, Beijing, China
ABSTRACT: As a result of the damages of the water distribution system in Wenchuan Earthquake occurring on May 12 th, 2008, the frequency of drinking water pollution incidents in earthquake-affected areas, such as Chengdu and Mianyang are much higher than that in usual areas. In order to get the contamination information of drinking water effectively and timely in earthquake-prone area, the paper introduces an optimum method to select the placement of early warning monitoring station in water distribution system. Monitored by monitoring stations, an objective function about the time of the potential pollution was established by a multi objective programming model. Furthermore, an evaluation function is set up by using linear weighted sum method, in which the weight coefficient R <inf>p</inf> is the probability of the contamination source in pipe after earthquake. Therefore, under the restriction condition of monitoring time limit, the optimal location of monitoring station could be fixed according to the solution of the evaluation function. In this paper, the method is applied to optimize the layout of warning monitoring station in water distribution system of Mianyang Sci-Tech Park.
AUTHOR KEYWORDS: Earthquake-prone area; Multi objective programming model; Optimal layout of warning monitoring station; Water contamination; Water distribution system
INDEX KEYWORDS: drinking water; early warning system; earthquake damage; earthquake event; monitoring system; multiobjective programming; pollution monitoring; Sichuan earthquake 2008; water pollution; water supply; Chengdu; China; Mianyang; Sichuan
REFERENCES: Mehta, Bipin H., Heavy metal contamination of water in coastal and inland areas of vasai region, India, Research Journal of Chemistry and Environment, 12, 2, pp. 30-35, (2008); 
Ayachit, Bhavana, Heavy metals contamination and its potential health risk with special reference to Narmada river at Nimar Region of Madhya Pradesh, Research Journal of Chemistry and Environment, 13, 4, pp. 23-27, (2009); 
Tandon, Praveen Kumar, But not a drop to drink, Factors responsible for water pollution, Research Journal of Chemistry and Environment, 14, 2, pp. 3-5, (2010); 
Ministry of Environmental Protection of China, (2008); 
J Construction Science and Technology, (2005); 
Lifeline Aseismatic Engineering, (2005); 
China Water and Waste Water, (2007); 
Berry, Jonathan W., Sensor placement in municipal water networks, Journal of Water Resources Planning and Management - ASCE, 131, 3, pp. 237-243, (2005); 
Isovitsch, Shannon L., Sensor placement and optimization criteria dependencies in a water distribution system, Journal of Water Resources Planning and Management - ASCE, 134, 2, pp. 186-196, (2008); 
Liu, Shuming, Flaw of demand coverage based method for optimal locations of monitoring stations and modification, Huanjing Kexue/Environmental Science, 31, 1, pp. 88-92, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yu, H., Zhao, Y., Ma, Y.-W., Sun, Y.-L., Zhang, H., Yang, S., Luo, Y.
AUTHOR FULL NAMES: Yu, Hui (55515499400); Zhao, Yongtao (38863732600); Ma, Yuewei (59044023500); Sun, Yulian (38863137300); Zhang, Hu (38863696800); Yang, Shihong (38863193700); Luo, Yong (57208197554)
55515499400; 38863732600; 59044023500; 38863137300; 38863696800; 38863193700; 57208197554
A remote sensing-based analysis on the impact of Wenchuan Earthquake on the core value of World Nature Heritage Sichuan Giant Panda Sanctuary
(2011) Journal of Mountain Science, 8 (3), pp. 458 - 465, Cited 11 times.
DOI: 10.1007/s11629-011-1006-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957839046&doi=10.1007%2Fs11629-011-1006-1&partnerID=40&md5=0658be37d4ec03b763d48e31f65ac09c

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Sichuan World Heritage Administrative Office, Chengdu, China
ABSTRACT: In this study, we used remotely sensed data, GIS modeling, and statistical methods to evaluate the damage caused by the Wenchuan Earthquake (May 12, 2008) to the giant panda (Ailuropoda melanoleuca) habitat in the World Nature Heritage Sichuan Giant Panda Sanctuary (WHSGPS) in China. A landscape ecological analysis found increases of landscape heterogeneity, complexity, and fragmentation in the giant panda habitat after the earthquake. A terrain analysis found that slope and elevation are directly associated with the distribution of the damaged areas. As slope and elevation increase, the size of the damaged area keeps increase until to a peak, and then starts to drop. The total area of the damaged vegetation in our study area is 114.26 km2, accounting for 3.78% of the study area; 30.46% of that 114.26 km2 is located in the Core Zone of WHSGPS. There are 18.57km2 of the damaged vegetation located in the identified suitable giant panda habitat, accounting for 1.75% of the total area of suitable giant panda habitats in the study area. Based on these findings, we conclude that the Wenchuan Earthquake does not have significant impact on the WHSGPS as a whole. © 2011 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Giant Panda Sanctuaries; GIS; Landscape pattern; Model; RS; Suitable giant panda habitat; Wenchuan Earthquake; World Nature Heritage
REFERENCES: An, Li, Long-term effects of family planning and other determinants of fertility on population and environment: Agent-based modeling evidence from Wolong Nature Reserve, China, Population and Environment, 31, 6, pp. 427-459, (2010); 
Journal of Natural Resources, (2000); 
Cifaldi, Rebecca L., Spatial patterns in land cover of exurbanizing watersheds in southeastern Michigan, Landscape and Urban Planning, 66, 2, pp. 107-123, (2004); 
Cushman, Samuel Alan, Effects of habitat loss and fragmentation on amphibians: A review and prospectus, Biological Conservation, 128, 2, pp. 231-240, (2006); 
Journal of Mountain Science, (2008); 
Earth Science Frontiers, (2008); 
Chin Biodiv, (2000); 
Deng, Xiangzheng, Impacts of the Wenchuan Earthquake on the giant panda nature reserves in China, Journal of Mountain Science, 7, 2, pp. 197-206, (2010); 
Hepcan, Şerif, Ecological networks as a new approach for nature conservation in Turkey: A case study of İzmir Province, Landscape and Urban Planning, 90, 3-4, pp. 143-154, (2009); 
Hudak, Andrew T., Trends in fire patterns in a southern African savanna under alternative land use practices, Agriculture, Ecosystems and Environment, 101, 2-3, pp. 307-325, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, J.-F., Chen, J.-P., Sun, Y.
AUTHOR FULL NAMES: Li, Jianfeng (36623002900); Chen, Jianping (57196112658); Sun, Yan (57221122518)
36623002900; 57196112658; 57221122518
Earthquake disaster analysis based on GIS abnormal information extraction
(2011) Geological Bulletin of China, 30 (5), pp. 756 - 765, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883572973&partnerID=40&md5=9e31e335a2ff93b2623265e6808dda8b

AFFILIATIONS: Land Resources and High Technique Research Center, Beijing, China
ABSTRACT: The Wenchuan earthquake caused tremendous losses of life and property. The relationship between earthquake intensity and fault structure is analyzed in view of geologic abnormal theory. Based on 1:500000 digital geologic map and Wenchuan earthquake geologic research, this article engaged in geologic abnormal quantitative analysis with GIS technique. It pointed out that earthquake disaster area mainly controlled by regional deep faults. Then earthquake activity which is closely related to destructive power of earthquakes is discussed. The authors obtain hard-hit areas according to the results. Finally we explained why the damage in the northern region is lighter than that in south. Through this approach, the seriousness of the earthquake disaster areas can be determined quickly for future earthquake to guide the disaster relief work.
AUTHOR KEYWORDS: Geological abnormal information analysis; GIS; Wenchuan earthquake
INDEX KEYWORDS: earthquake intensity; geological mapping; GIS; quantitative analysis; Sichuan earthquake 2008
REFERENCES: undefined, (2008); 
undefined, (2000); 
undefined, (2008); 
Burchfiel, B. Clark, Geology of the Haiyuan Fault Zone, Ningxia‐Hui Autonomous Region, China, and its relation to the evolution of the Northeastern Margin of the Tibetan Plateau, Tectonics, 10, 6, pp. 1091-1110, (1991); 
undefined, (2007); 
undefined, (1994); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
She Fa Chen, Active faulting and block movement associated with large earthquakes in the Min Shan and Longmen Mountains, northeastern Tibetan Plateau, Journal of Geophysical Research, 99, B12, pp. 24-38, (1994); 
Xu, Zhiqin Qin, Uplift of the Longmen Shan range and the Wenchuan earthquake, Episodes, 31, 3, pp. 291-301, (2008); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, J., Hull, V., Xu, W., Liu, J., Ouyang, Z., Huang, J., Wang, X., Li, R.
AUTHOR FULL NAMES: Zhang, Jindong (12041725600); Hull, Vanessa (24472727900); Xu, Weihua (55487629900); Liu, Jianguo Gou (35491043300); Ouyang, Zhiyun (7006468812); Huang, Jinyan (55881736700); Wang, Xuezhi (56512501900); Li, Rengui (8930935700)
12041725600; 24472727900; 55487629900; 35491043300; 7006468812; 55881736700; 56512501900; 8930935700
Impact of the 2008 Wenchuan earthquake on biodiversity and giant panda habitat in Wolong Nature Reserve, China
(2011) Ecological Research, 26 (3), pp. 523 - 531, Cited 58 times.
DOI: 10.1007/s11284-011-0809-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955918091&doi=10.1007%2Fs11284-011-0809-4&partnerID=40&md5=3a4d061bc1b83214b0ac85be838ad410

AFFILIATIONS: Department of Systems Ecology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Mianyang Normal University, Mianyang, Sichuan, China; Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, United States; China Conservation and Research Center for the Giant Panda, Sichuan, Sichuan, China; Computer Network Information Center, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Natural disasters such as earthquakes have profound effects on the earth's biodiversity. However, studies on immediate earthquake impacts are rarely conducted at fine scales due to logistical constraints. We conducted the first post-earthquake field survey in Wolong Nature Reserve, Wenchuan, China, less than 1 year after it was hit by a magnitude 8.0 earthquake in 2008. Since Wolong harbors approximately 10% of the endangered wild giant panda (Ailuropoda melanoleuca) population, the impact of the earthquake on the giant panda and its habitat is of particular concern. We established 15 transects in three focus areas within the Reserve where we classified occurrences of earthquake damage according to vegetation and geophysical characteristics. In the 11.2 km2 area sampled, we recorded 156 occurrences of earthquake damage consisting of landslides and mudflows, which comprised a total area of 0.88 km2. Of all earthquake damage occurrences sampled, only 36% of occurences (73% of surface area) corresponded to damaged areas previously detected through broad-scale remote sensing. The remaining damaged areas mainly consisted of occurrences too small to be detected without field observation. Although there were significant losses to tree and shrub species diversity and richness in earthquake-damaged areas, remnant vegetation was found in the majority (80%) of damaged areas, suggesting the potential for forest recovery. Most earthquake-damaged areas were too steep to be classified as suitable giant panda habitat (79%). In addition, a sizable number of signs of giant panda (67) and other wildlife (148) were observed near the earthquake-damaged areas, and there appeared to be avoidance of earthquake damage only at short-range distances. This study has implications for understanding the impact of natural disasters on biodiversity and highlights the importance of fine scale on-the-ground assessments of disaster impacts on wildlife and their habitats. © 2011 The Ecological Society of Japan.
AUTHOR KEYWORDS: Biodiversity; Earthquake; Giant panda; Natural disasters; Wildlife habitat
INDEX KEYWORDS: bear; biodiversity; earthquake damage; field survey; habitat conservation; hazard management; logistics; natural disaster; recovery plan; remote sensing; Sichuan earthquake 2008; species richness; wildlife management; China; Sichuan; Wolong Nature Reserve; Ailuropoda; Ailuropoda melanoleuca
REFERENCES: Allen, Robert B., Immediate damage by an earthquake to a temperate montane forest, Ecology, 80, 2, pp. 708-714, (1999); 
Ashenafi, Zelealem Tefera, Behaviour and ecology of the Ethiopian wolf (Canis simensis) in a human-dominated landscape outside protected areas, Animal Conservation, 8, 2, pp. 113-121, (2005); 
Hawth S Analysis Tools for Arcgis, (2004); 
Cheng, Song, Wenchuan 512 earthquake and giant panda habitat in Wolong, China: A review of strong earthquake effects, Frontiers of Forestry in China, 4, 4, pp. 388-393, (2009); 
News Report, (2008); 
Historic Earthquakes within 200 km of Wenchuan Since 1933, (2008); 
Dong, Rencai, Technique of multi-source-data integration and fusion for urgent assessment of ecology and environment effect from Wenchuan Earthquake, Shengtai Xuebao, 28, 12, pp. 5795-5800, (2008); 
undefined, (1999); 
Ferguson, Bruce G., Post-agricultural succession in El Petén, Guatemala, Conservation Biology, 17, 3, pp. 818-828, (2003); 
Ecology, (1922)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

An, L., Zhang, J., Zhao, F.-J.
AUTHOR FULL NAMES: An, Liqiang (44060947200); Zhang, Jingfa (14032411600); Zhao, Fujun (55353392600)
44060947200; 14032411600; 55353392600
Extracting secondary disaster of Wenchuan earthquake: Application of object-oriented image-classifying technology
(2011) Journal of Natural Disasters, 20 (2), pp. 160 - 168, Cited 9 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960665633&partnerID=40&md5=bbfe3e2325cb3708d42f6b5e697f08ac

AFFILIATIONS: Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; Heilongjiang University of Science and Technology, Harbin, Heilongjiang, China
ABSTRACT: Remote sensing technology provides valuable data for earthquake hazard management, by which information of seismic secondary disaster such as landslide, avalanche, debris flow, barrier lake can be extracted rapidly and accurately. Applying multi-scale segmentation and context information, the object-oriented fuzzy classification has advantages over traditional methods in accuracy and flexibility. In this paper, we apply this technique to detect changes of Beichuan County ,based on pre-and post-event images of Wenchuan earthquake. Four-temporal data was combined with digital elevation model (DEM) to study increment of water body of barrier lake. Also, we explain basic theory of object-oriented classification, summarize the key technique and discuss workflow of seismic secondary disaster extraction. The results show that it is feasible and effective to extract hazard information from image objects.
AUTHOR KEYWORDS: Object-oriented classification; Remote sensing image; Seismic secondary disaster
INDEX KEYWORDS: detection method; digital elevation model; disaster management; fuzzy mathematics; hazard assessment; image classification; remote sensing; seismic hazard; Sichuan earthquake 2008; technological development; Beichuan; China; Sichuan
REFERENCES: Barlow, John, Detecting translational landslide scars using segmentation of Landsat ETM+ and DEM data in the northern Cascade Mountains, British Columbia, Canadian Journal of Remote Sensing, 29, 4, pp. 510-517, (2003); 
Ishibuchi, Hisao, Three-objective genetics-based machine learning for linguistic rule extraction, Information Sciences, 136, 1-4, pp. 109-133, (2001); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Jiang, G., Wang, H., Wen, Y.
AUTHOR FULL NAMES: Xu, Caijun (57202093443); Jiang, Guoyan (37107971800); Wang, Hao (59651893300); Wen, Yangmao (13003619600)
57202093443; 37107971800; 59651893300; 13003619600
Analyzing InSAR results using GIS and its application on the coseismic interpretation of Mw7.9 Wenchuan earthquake
(2011) Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 36 (4), pp. 379 - 383, Cited 6 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955961539&partnerID=40&md5=c664c43ed7118bf5838a826fcbb25077

AFFILIATIONS: School of Geodesy and Geomatics, Wuhan University, Wuhan, Hubei, China
ABSTRACT: InSAR results' analysis assisted with GIS can give more comprehensive interpretation on surface deformation mechanism. In this paper, we present the methods to clip, split and merge SAR images with the help of GIS. Besides, the profile and contour analysis to SAR images are illustrated. In order to demonstrate the effectiveness on interpreting earthquake deformation mechanism using the InSAR results assisted with GIS, we analyze the Mw7.9 Wenchuan earthquake as follows. First, the seismic fault surface trace is extracted according to the InSAR range offset and coseismic deformation field. Second, through the comparison between the LOS deformation field obtained by geophysical forward using dislocation model and the InSAR coseismic deformation field, the whole and hanging wall corrections of InSAR deformation field are obtained, with which the more actual coseismic deformation are got by correction using GIS. Finally, more comprehensive analysis and interpretation on the characteristics of coseismic deformation are presented by using the 2D/3D coseismic deformation field, interferograms and profile analysis.
AUTHOR KEYWORDS: Coseismic interpretation; Deformation analysis; GIS; InSAR
INDEX KEYWORDS: Comprehensive analysis; Contour analysis; Coseismic deformation; Coseismic interpretation; Deformation analysis; Deformation field; Deformation mechanism; Dislocation models; GIS; InSAR; Interferograms; Profile analysis; Range offset; SAR Images; Seismic faults; Split-and-merge; Surface deformation; Wenchuan Earthquake; Deformation; Earthquakes; Geographic information systems; Geodetic satellites; coseismic process; deformation mechanism; dislocation; fault; Sichuan earthquake 2008; synthetic aperture radar
REFERENCES: Jian, Guoliu, Detection of rapid erosion in SE Spain: A GIS approach based on ERS SAR coherence imagery, Photogrammetric Engineering and Remote Sensing, 70, 10, pp. 1179-1185, (2004); 
Miao, Fang, Application of DInSAR and GIS for underground mine subsidence monitoring, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 37, pp. 251-255, (2008); 
Geophysical to Engineering Roles, (2007); 
Ge, Linlin, GPS and GIS assisted radar interferometry, Photogrammetric Engineering and Remote Sensing, 70, 10, pp. 1173-1177, (2004); 
Ge, Linlin, Mine subsidence monitoring using multi-source satellite SAR images, Photogrammetric Engineering and Remote Sensing, 73, 3, pp. 259-266, (2007); 
Radar Interferometry Data Interpretation and Error Analysis, (2001); 
undefined, (2009); 
Xu, Caijun, Coseismic slip distribution of the 2008 mw 7.9 Wenchuan earthquake from joint inversion of GPS and InSAR data, Bulletin of the Seismological Society of America, 100, 5 B, pp. 2736-2749, (2010); 
undefined, (2008); 
undefined, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhu, J., Ding, J., Liang, J.
AUTHOR FULL NAMES: Zhu, Jing (55704611000); Ding, Jun (55463437900); Liang, Jingtao (35205586800)
55704611000; 55463437900; 35205586800
Influences of the Wenchuan Earthquake on sediment supply of debris flows
(2011) Journal of Mountain Science, 8 (2), pp. 270 - 277, Cited 26 times.
DOI: 10.1007/s11629-011-2114-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953250536&doi=10.1007%2Fs11629-011-2114-7&partnerID=40&md5=3d17c98815fdf0a64a2fbb54d5a25f4b

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The 5. 12 Wenchuan Earthquake and the subsequent rainstorms induced a large number of landslides, which later were transformed into debris flows. To evaluate the effect of the earthquake on the sediment supply of debris flows, eight debris flow basins near Beichuan City, Sichuan Province, China were chosen as the study area. The area variations of the debris flow source after the Wenchuan Earthquake and the subsequent rainstorm are analyzed and discussed in this paper. Interpretations of aerial photographs (after the 5. 12 Wenchuan Earthquake) and SPOT<inf>5</inf> images (after the rainstorm event of September 24, 2008) as well as field investigations were compared to identify the transformation of landslide surface in the study area, indicating that the landslide area in the eight debris flow basins significantly increased. The loose sediment area on the channel bed increased after the rainstorm event. In order to estimate the relationship of the landslide area with the rainfall intensity in different return periods, a model proposed by Uchihugi was adopted. Results show that new landslide area induced by heavy rainfall with 50-year and 100-year return period will be 0. 87 km2 and 1. 67 km2, respectively. The study results show the Wenchuan earthquake had particular influences on subsequent rainfall-induced debris flow occurrence. © 2011 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Debris flow; Rainstorm; Remote sensing imagery; Wenchuan earthquake
REFERENCES: Chen, Hongey, The impact of landslide and debris flows triggered by Typhoon Mindulle in Taiwan, Quarterly Journal of Engineering Geology and Hydrogeology, 38, 3, pp. 301-304, (2005); 
Evaluation of Landslides and Debris Flow Hazards for Reconstruction of Chin Shan Hydropower Plant in Ta Chia Watershed After Chi Chi Earthquake, (2009); 
Coe, Jeffrey A., Volumetric analysis and hydrologic characterization of a modern debris flow near Yucca Mountain, Nevada, Geomorphology, 20, 1-2, pp. 11-28, (1997); 
Dong, J. J., The role of the sediment budget in understanding debris flow susceptibility, Earth Surface Processes and Landforms, 34, 12, pp. 1612-1624, (2009); 
Journal of Geophysical Research, (2004); 
Liu, Chiannan, Impacts of september 21, 1999 Chi-Chi earthquake on the characteristics of gully-type debris flows in central Taiwan, Natural Hazards, 47, 3, pp. 349-368, (2008); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Journal of Mountain Science, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, Q., Zhang, S., Li, W.
AUTHOR FULL NAMES: Xu, Qiang (56506033600); Zhang, Shuai (55092670700); Li, Weile (25936551300)
56506033600; 55092670700; 25936551300
Spatial distribution of large-scale landslides induced by the 5.12 Wenchuan Earthquake
(2011) Journal of Mountain Science, 8 (2), pp. 246 - 260, Cited 102 times.
DOI: 10.1007/s11629-011-2105-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953239279&doi=10.1007%2Fs11629-011-2105-8&partnerID=40&md5=3605a36893abf7100c561c0dd57f6f82

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The 5.12 Wenchuan Earthquake in 2008 induced hundreds of large-scale landslides. This paper systematically analyzes 112 large-scale landslides (surface area > 50000 m2), which were identified by interpretation of remote sensing imagery and field investigations. The analysis suggests that the distribution of large-scale landslides is affected by the following four factors: (a) distance effect: 80% of studied large-scale landslides are located within a distance of 5 km from the seismic faults. The farther the distance to the faults, the lower the number of large-scale landslides; (b) locked segment effect: the large-scale landslides are mainly located in five concentration zones closely related with the crossing, staggering and transfer sections between one seismic fault section and the next one, as well as the end of the NE fault section. The zone with the highest concentration was the Hongbai-Chaping segment, where a great number of large-scale landslides including the two largest landslides were located. The second highest concentration of large-scale landslides was observed in the Nanba-Donghekou segment at the end of NE fault, where the Donghekou landslide and the Woqian landslide occurred; (c) Hanging wall effect: about 70% of the large-scale landslides occurred on the hanging wall of the seismic faults; and (d) direction effect: in valleys perpendicular to the seismic faults, the density of large-scale landslides on the slopes facing the seismic wave is obviously higher than that on the slopes dipping in the same direction as the direction of propagation of the seismic wave. Meanwhile, it is found that the sliding and moving directions of large-scale landslides are related to the staggering direction of the faults in each section. In Qingchuan County where the main fault activity was horizontal twisting and staggering, a considerable number of landslides showed the feature of sliding and moving in NE direction which coincides with the staggering direction of the seismic faults. © 2011 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: 5.12 Wenchuan Earthquake; Direction effect; Distribution pattern; Landslides; Locked segment effect
REFERENCES: Champati Ray, Prashanta Kumar, Analysis of seismicity-induced landslides due to the 8 October 2005 earthquake in Kashmir Himalaya, Current Science, 97, 12, pp. 1742-1751, (2009); 
Cole, W. F., Analysis of earthquake-reactivated landslides in the epicentral region, central Santa Cruz Mountains, California, US Geological Survey Professional Paper, 1551-C, pp. 165-185, (1998); 
Multi Media Academic Report in Chengdu University of Technology, (2008); 
Susceptibility Assessment of Earthquake Triggered Landslides in El Salvador Using Logistic Regression, (2008); 
Japan, (2010); 
Landslides Distribution Nearby Earthquake Seismic Fault of the Chuetsu Offshore Earthquake, (2009); 
Geohazard Assessment of the Wenchuan Earthquake, (2009); 
Journal of Engineering Geology, (2008); 
Catastrophic Landslides in China, (2008); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shu, C., Jiang, L.
AUTHOR FULL NAMES: Shu, Chengqiang (35194728600); Jiang, Liangqun (35194024600)
35194728600; 35194024600
Geological hazards risk regionalization based on GIS in Chongzhou city
(2011) Proceedings of SPIE - The International Society for Optical Engineering, 7752, art. no. 77521I, Cited 0 times.
DOI: 10.1117/12.889226
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952631801&doi=10.1117%2F12.889226&partnerID=40&md5=734259e995ad581fbae8429aea86b2b3

AFFILIATIONS: Land and Resources College, China West Normal University, Nanchong, Sichuan, China
ABSTRACT: After Wenchuan Earthquake on May 12, 2008, various geological hazards happened frequently in Chongzhou city, Sichuan.This paper analyzes factors inducing hazards by weighted comprehensive evaluation (WCE) and analytic hierarchy process (AHP), and builds the geological hazards assessment model.On the basis, the map of geological hazards lability zoning is drew. The study shows that geological hazards in Chongzhou city are mainly landslide, collapse,unstable slope and debris flow. According the risk degree value of geological hazards every field, Chongzhou city is regionalized to high, middle, low and none risk area of geological hazards. The results display that almost all geological hazards distribute in northwest mountain area of this city where is key area of geological hazards prevention in future© 2011 SPIE.
AUTHOR KEYWORDS: Chongzhou city; Geological hazards; GIS; Risk regionalization
INDEX KEYWORDS: Chongzhou city; Comprehensive evaluation; Debris flows; Geological hazards; GIS; Risk areas; Risk degree; Wenchuan Earthquake; Agricultural engineering; Debris; Decision theory; Hierarchical systems; Hazards
REFERENCES: Journal of Catastrophology, (2007); 
Sandong Land Resources, (2007); 
Yunnan Geologic, (2007); 
Chinese Journal of Geological Hazard and Control, (2004); 
Wang, Zhe, AHP-based evaluation of occurrance easiness of geological disasters in mianyang city, Journal of Natural Disasters, 18, 1, pp. 14-23, (2009); 
Hu, Haibo, AHP model-based risk assessment of lightning in Beijing, Journal of Natural Disasters, 19, 1, pp. 104-109, (2010); 
Science of Surveying and Mapping, (2008); 
Research of Soil and Water Conservation, (2010); 
Journal of Southwest University for Nationalities Natural Science Edition, (2008); 
Chinese Journal of Rock Mechanics and Engineering, (2004)
SPONSORS: Wuhan Institute of Technology, Huanggang Normal University, Intelligent Inf. Technol. Appl. Res. Assoc.
CONFERENCE NAME: PIAGENG 2010 - Photonics and Imaging for Agricultural Engineering
CONFERENCE DATE: 2010-12-25 through 2010-12-26
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Fu, B., Shi, P., Guo, H., Okuyama, S., Ninomiya, Y., Wright, S.
AUTHOR FULL NAMES: Fu, Bihong (7103382662); Shi, Pilong (26421447200); Guo, Huadong (56415384100); Okuyama, Satoshi (36139690800); Ninomiya, Yoshiki (35491210500); Wright, Sarah (57199462229)
7103382662; 26421447200; 56415384100; 36139690800; 35491210500; 57199462229
Surface deformation related to the 2008 Wenchuan earthquake, and mountain building of the Longmen Shan, eastern Tibetan Plateau
(2011) Journal of Asian Earth Sciences, 40 (4), pp. 805 - 824, Cited 147 times.
DOI: 10.1016/j.jseaes.2010.11.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551573503&doi=10.1016%2Fj.jseaes.2010.11.011&partnerID=40&md5=7905d20d2ba5bb72102824fb4ef419fc

AFFILIATIONS: State Key Laboratory of Lithospheric Evolution, Chinese Academy of Sciences, Beijing, Beijing, China; Center for Earth Observation and Digital Earth, Haidian, Beijing, China; National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan; School of Earth Sciences, University of Melbourne, Melbourne, VIC, Australia
ABSTRACT: The 12 May 2008 M<inf>s</inf> 8.0 Wenchuan earthquake, China, was one of largest continental thrusting events worldwide. Based on interpretations of post-earthquake high-resolution remote sensing images and field surveys, we investigated the geometry, geomorphology, and kinematics of co-seismic surface ruptures, as well as seismic and geologic hazards along the Longmen Shan fold-and-thrust belt. Our results indicate that the Wenchuan earthquake occurred along the NE-SW-trending Yingxiu-Beichuan and Guanxian-Anxian faults in the Longmen Shan fold-and-thrust belt. The main surface rupture zones along the Yingxiu-Beichuan and Guanxian-Anxian fault zones are approximately 235 and 72km in length, respectively. These sub-parallel ruptures may merge at depth. The Yingxiu-Donghekou surface rupture zone can be divided into four segments separated by discontinuities that appear as step-overs or bends in map view. Surface deformation is characterized by oblique reverse faulting with a maximum vertical displacement of approximately 10m in areas around Beichuan County. Earthquake-related disasters (e.g., landslides) are linearly distributed along the surface rupture zones and associated river valleys.The Wenchuan earthquake provides new insights into the nature of mountain building within the Longmen Shan, eastern Tibetan Plateau. The total crustal shortening accommodated by this great earthquake was as much as 8.5. m, with a maximum vertical uplift of approximately 10. m. The present results suggest that ongoing mountain building of the Longmen Shan is driven mainly by crustal shortening and uplift related to repeated large seismic events such as the 2008 Wenchuan earthquake. Furthermore, rapid erosion within the Longmen Shan fold-and-thrust belt occurs along deep valleys and rupture zones following the occurrence of large-scale landslides triggered by earthquakes. Consequently, we suggest that crustal shortening related to repeated great seismic events, together with isostatic rebound induced by rapid erosion-related unloading, is a key component of the geodynamics that drive ongoing mountain building on the eastern Tibetan Plateau. © 2010 Elsevier Ltd.
AUTHOR KEYWORDS: Co-seismic oblique reverse faulting; Crustal shortening; Eastern Tibetan Plateau; Longmen Shan; Mountain building; Ms 8.0 Wenchuan earthquake
INDEX KEYWORDS: coseismic process; crustal deformation; crustal shortening; displacement; fold and thrust belt; kinematics; reverse fault; seismotectonics; Sichuan earthquake 2008; uplift; China; Longmen Mountains; Qinghai-Xizang Plateau
REFERENCES: Arne, Dennis C., Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan Plateau, Tectonophysics, 280, 3-4, pp. 239-256, (1997); 
Avouac, Jean Philippe, Erosion as a driving mechanism of intracontinental mountain growth, Journal of Geophysical Research: Solid Earth, 101, 8, pp. 17747-17769, (1996); 
Bilham, Roger G., The morphology of strike-slip faults: examples from the San Andreas Fault, California, Journal of Geophysical Research, 94, B8, pp. 10-216, (1989); 
Burbank, Douglas W., Bedrock incision, rock uplift and threshold hillslopes in the northwestern Himalayas, Nature, 379, 6565, pp. 505-510, (1996); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Champagnac, Jean Daniel, Quaternary erosion-induced isostatic rebound in the western Alps, Geology, 35, 3, pp. 195-198, (2007); 
Champagnac, Jean Daniel, Erosion-driven uplift of the modern Central Alps, Tectonophysics, 474, 1-2, pp. 236-249, (2009); 
Chen, Shefa, Emplacement of the Longmen Shan Thrust-Nappe Belt along the eastern margin of the Tibetan Plateau, Journal of Structural Geology, 18, 4, pp. 413-430, (1996); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, Q., Ruan, X., Shi, P.
AUTHOR FULL NAMES: Liu, Qiang (55712162200); Ruan, Xuejing (36504941300); Shi, Pilong (26421447200)
55712162200; 36504941300; 26421447200
Selection of emergency shelter sites for seismic disasters in mountainous regions: Lessons from the 2008 Wenchuan Ms 8.0 Earthquake, China
(2011) Journal of Asian Earth Sciences, 40 (4), pp. 926 - 934, Cited 96 times.
DOI: 10.1016/j.jseaes.2010.07.014
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551570619&doi=10.1016%2Fj.jseaes.2010.07.014&partnerID=40&md5=15a9fe7776d39408579ad91569b42f0e

AFFILIATIONS: Key Laboratory of Engineering Geomechanics, Chinese Academy of Sciences, Beijing, Beijing, China; Ocean University of China, Qingdao, Shandong, China
ABSTRACT: In this paper, we use the 12 May 2008 Wenchuan Earthquake as a background event for analyzing and applying the principles of site selection of emergency shelters for a disastrous earthquake. Based on field investigations and analyses of remote sensing imagery, we identified the distribution of active faults and the locations of co-seismic surface rupture zones-areas in which buildings are at risk of intensive damage. It is important that emergency shelters are located outside of such vulnerable areas. One of the lessons learned from the Wenchuan Earthquake is that high fatality rates occur in areas without life-saving shelters. The principles that underlie the selection of emergency shelter sites are as follows: (1) keep far away from active fault zones, with the distance depending on the characteristics of the fault, including the nature of hangingwall and footwall structures; (2) disaster-mitigation strategies should be developed as a multi-dimensional system for the management of natural hazards, human activities, and urban expansion, involving keeping away from vulnerable slopes and establishing an early-warning system; (3) the accessibility of mountainous regions must be considered, including establishing small emergency shelters that house large numbers of people and covering regions with an uneven distribution of villages; and (4) government and law-making agencies in China must establish new earthquake design codes for buildings, emphasizing the importance of public facilities (including schools, collective welfare institutions, and medical facilities) as emergency shelters during disastrous earthquakes. The site-selection process requires an interdisciplinary approach involving seismologists, engineers, environmental and social scientists, emergency management personnel, and government officials. The parameters upon which the above principles are based can be qualitatively determined, thereby providing a valuable initial database for further quantitative analysis. The preliminary results and knowledge gained in the present paper can be used as a decision-making tool to support the government in earthquake-recovery and reconstruction programs. We also discuss practical examples of site evaluation in regions that suffered heavy damage during the Wenchuan Earthquake. © 2010 Elsevier Ltd.
AUTHOR KEYWORDS: Disaster mitigation; Earthquake hazard; Emergency shelter; Risk management; Site-selection principles
INDEX KEYWORDS: coping strategy; disaster management; disaster relief; early warning system; earthquake damage; earthquake magnitude; natural disaster; risk assessment; Sichuan earthquake 2008; vulnerability; China
REFERENCES: Baker, Earl Jay, Are we any safer? comprehensive plan impacts on hurricane evacuation and shelter demand in florida, Coastal Management, 36, 3, pp. 294-317, (2008); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
undefined, (2008); 
undefined, (2009); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Fu, Bihong, Geometry and kinematics of the 2008 Wenchuan earthquake surface ruptures around the Qushan Town of Beichuan County, Sichuan: Implications for mitigation of seismic and geologic disasters, Acta Geophysica Sinica, 52, 2, pp. 485-495, (2009); 
Atlas of Remote Sensing for Wenchuan Earthquake Disaster, (2008); 
Journal of Engineering Geology, (2009); 
undefined, (2004); 
Journal of Engineering Geology, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Dong, Y., Li, Q., Dou, A., Wang, X.
AUTHOR FULL NAMES: Dong, Yanfang (8213169000); Li, Qian (36062654700); Dou, Aixia (55761756200); Wang, Xiaoqing (35148757500)
8213169000; 36062654700; 55761756200; 35148757500
Extracting damages caused by the 2008 Ms 8.0 Wenchuan earthquake from SAR remote sensing data
(2011) Journal of Asian Earth Sciences, 40 (4), pp. 907 - 914, Cited 70 times.
DOI: 10.1016/j.jseaes.2010.07.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551547711&doi=10.1016%2Fj.jseaes.2010.07.009&partnerID=40&md5=c76eaa1742b3efb2c0325b2805566b5f

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; State Key Laboratory of Geomechanics and Geotechnical Engineering, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Bad weather conditions usually limit the acquisition of optical remote sensing images, while all day and all weather synthetic aperture radar (SAR) shows the ability of providing timely remote sensing data for emergency response and rescue works after earthquake. Because SAR is sensitive to the surface changes caused by earthquake, the modified electromagnetic behaviour by geological disasters and the collapse of buildings can be recorded in SAR images as backscattering intensity changes. Absolute radiometric calibration was performed to SAR products to derive backscattering coefficient sigma nought from image digital number (DN). Based on change detection methods, Advanced Land Observing Satellite (ALOS) Phased Array type L-band Synthetic Aperture Radar (PALSAR) data and TerraSAR-X data acquired for the Ms 8.0 Wenchuan earthquake were used to extract earthquake damage information. This study revealed that landslides showed stronger backscattering and barrier lakes showed lower backscattering in post-earthquake 10. m ALOS PALSAR images comparing to pre-earthquake, and collapsed buildings showed lower backscattering compared to un-collapsed buildings in 1. m TerraSAR-X image. Results showed that SAR data with different spatial resolutions are useful for different earthquake damage information extraction: medium spatial resolution SAR data, e.g. 10 m ALOS PALSAR data, were efficient for secondary geological disaster extraction; high-resolution SAR data, e.g. 1. m TerraSAR-X data, with the help of ancillary GIS data or high-resolution optical data, could be used to extract building collapse information in urban areas. This study indicates that SAR remote sensing data can provide earthquake damage information at early emergency stage and assist the field surveying, further damage assessment and post-earthquake reconstruction. © 2010.
AUTHOR KEYWORDS: Change detection; Earthquake damage extraction; High spatial resolution; SAR; Wenchuan earthquake
INDEX KEYWORDS: disaster management; earthquake damage; landslide; radar imagery; remote sensing; Sichuan earthquake 2008; spatial resolution; synthetic aperture radar; China; Sichuan; Wenchuan
REFERENCES: undefined, (2009); 
Dash, Jadu, Automatic building extraction from laser scanning data: An input tool for disaster management, Advances in Space Research, 33, 3, pp. 317-322, (2004); 
Fielding, Eric Jameson, Shallow fault-zone dilatancy recovery after the 2003 Bam earthquake in Iran, Nature, 458, 7234, pp. 64-68, (2009); 
Fu, Bihong, Mapping active fault associated with the 2003 Mw 6.6 Bam (SE Iran) earthquake with ASTER 3D images, Remote Sensing of Environment, 92, 2, pp. 153-157, (2004); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Fu, Bihong, Geometry and kinematics of the 2008 Wenchuan earthquake surface ruptures around the Qushan Town of Beichuan County, Sichuan: Implications for mitigation of seismic and geologic disasters, Acta Geophysica Sinica, 52, 2, pp. 485-495, (2009); 
Atlas of Seismological and Geological Disasters Associated with the 12 May 2008 Ms 8 0 Wenchuan Great Earthquake Sichuan China, (2009); 
Guo, Huadong, An improved automatic detection method for earthquake-collapsed buildings from ADS40 image, Chinese Science Bulletin, 54, 18, pp. 3303-3307, (2009); 
undefined, (2008); 
undefined, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Dai, F., Xu, C., Yao, X., Xu, L., Tu, X.B., Gong, Q.M.
AUTHOR FULL NAMES: Dai, Fuchu (7102055666); Xu, Chong (35184309900); Yao, Xin (55723721600); Xu, Ling (55732589900); Tu, Xinbin (7102136710); Gong, Qiuming (24080084900)
7102055666; 35184309900; 55723721600; 55732589900; 7102136710; 24080084900
Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China
(2011) Journal of Asian Earth Sciences, 40 (4), pp. 883 - 895, Cited 613 times.
DOI: 10.1016/j.jseaes.2010.04.010
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551538211&doi=10.1016%2Fj.jseaes.2010.04.010&partnerID=40&md5=8a686ead821fb2b69be9184eacd5971c

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake of May 12, 2008 is one of the most disastrous earthquakes in China. The earthquake triggered tens of thousands of landslides over a broad area, including shallow, disrupted landslides, rock falls, deep-seated landslides, and rock avalanches, some of which buried large sections of some towns and dammed the rivers. The purpose of this study is to investigate correlations between the occurrence of landslides with geologic and geomorphologic conditions, and seismic parameters. Over 56,000 earthquake-triggered landslides, with a total area of 811km2, are interpreted using aerial photographs and remote sensing images taken following the earthquake. The spatial distribution of these landslides is analyzed statistically using both landslide-point density (LPD), defined as the number of landslides per square kilometer, and landslide-area density (LAD), the percentage of the area affected by landslides, to determine how the occurrence of landslides correlates with distance from the epicenter, distance from the major surface rupture, seismic intensity and peak ground acceleration (PGA), slope angle, slope aspect, elevation, and lithology. It is found that both LAD and LPD have strong positive correlations with slope steepness, distance from the major surface rupture and seismic intensity, and that Pre-Sinian schist, and Cambrian sandstone and siltstone intercalated with slate have the most concentrated landslide activities, followed by the Permian limestone intercalated with shale, and Devonian limestone. Statistical analyses also indicate that the major surface rupture has influence on the spatial distribution of landslides, because LAD and LPD are relatively higher on the hanging wall than on the footwall. However, the correlation between the occurrence of landslides with distance from the epicenter of the earthquake is complicated, rather than a relatively simple negative correlation as found from other reported cases of earthquakes. This is possibly due to complicated rupture processes of the earthquake. © 2010 Elsevier Ltd.
AUTHOR KEYWORDS: Landslide-area density; Landslide-point density; Landslides; Spatial distribution; Wenchuan earthquake
INDEX KEYWORDS: earthquake epicenter; earthquake intensity; earthquake rupture; earthquake trigger; geomorphology; landslide; limestone; rock avalanche; Sichuan earthquake 2008; spatial distribution; statistical analysis; Sinia
REFERENCES: Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000); 
undefined, (2008); 
Chen, Yong, Wenchuan earthquake: Way of thinking is changed, Episodes, 31, 4, pp. 374-377, (2008); 
Chigira, Masahiro, Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan, Engineering Geology, 82, 4, pp. 202-221, (2006); 
Seismology and Geology, (1994); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Fu, Bihong, Geometry and kinematics of the 2008 Wenchuan earthquake surface ruptures around the Qushan Town of Beichuan County, Sichuan: Implications for mitigation of seismic and geologic disasters, Acta Geophysica Sinica, 52, 2, pp. 485-495, (2009); 
Fu, Bihong, Surface deformation related to the 2008 Wenchuan earthquake, and mountain building of the Longmen Shan, eastern Tibetan Plateau, Journal of Asian Earth Sciences, 40, 4, pp. 805-824, (2011); 
Harp, Edwin L., Landslides triggered by the 1994 Northridge, California, earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S319-S332, (1996)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lei, T., Li, C.-C., He, X.-Y.
AUTHOR FULL NAMES: Lei, Tianjie (55557554100); Li, Changchun (36610302100); He, Xiaoying (42861454300)
55557554100; 36610302100; 42861454300
Application of aerial remote sensing of pilotless aircraft to disaster emergency rescue
(2011) Journal of Natural Disasters, 20 (1), pp. 178 - 183, Cited 41 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959599746&partnerID=40&md5=ce0e6ba882856552f542b15816e9d6dd

AFFILIATIONS: College of Resources Science and Technology, Beijing Normal University, Beijing, China; School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan, China
ABSTRACT: Natural disasters always take place suddenly, quick response is very important for rescue. The real-time information of disasters plays important role for enacting rescue methods, improving rescue efficiency and quality. At present, the airborne remote sensing and satellite remote sensing limit their effect in the course of disasters rescuing by the impact of their temporal and spatial resolution, external environment and using cost. The Pilotless vehicle remote sensing system has such features as rapid, flexible, high resolution and low cost etc, it also can work in dangerous area. In this paper, the composition of aerial remote sensing system was introduced, then its application in the course of disasters rescuing was discussed, and the disaster rescue instance during the 5.12 Wenchuan earthquake in Sichuan Province was introduced. In the end, the advantages of pilotless vehicle remote sensing system in use for disaster rescue were summarized, the disadvantages and the way to improve were also discussed.
AUTHOR KEYWORDS: Aerial remote sensing system; Application; Disaster; Emergency rescue; Pilotless vehicle
INDEX KEYWORDS: aerial survey; airborne survey; disaster management; natural disaster; remote sensing; remotely operated vehicle; search and rescue; Sichuan earthquake 2008; spatial resolution
REFERENCES: undefined, (2011); 
undefined, (2011); 
Giammona, Charles P., Aerial image processing technology for emergency response, Spill Science and Technology Bulletin, 2, 1, pp. 47-54, (1995); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ye, Y., Li, D., Wang, X., Li, W.
AUTHOR FULL NAMES: Ye, Yuntao (37071656800); Li, Danxun (7405322432); Wang, Xingkui (25631201000); Li, Wenjie (56937812300)
37071656800; 7405322432; 25631201000; 56937812300
3-D visualization of flood propagation caused by barrier lake breaching in the Wenchuan earthquake stricken areas
(2011) Shuili Fadian Xuebao/Journal of Hydroelectric Engineering, 30 (1), pp. 62 - 69, Cited 7 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953649908&partnerID=40&md5=85df532ee7a936c2ce0a4240f4e5cb74

AFFILIATIONS: Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing, China; Tsinghua University, Beijing, China
ABSTRACT: A three-dimensional (3-D) visual simulation system of outburst flood propagation is developed for the Tangjiashan barrier lake in the Wenchuan earthquake stricken areas based on VC + + and OpenGVS. Several key techniques, including methods of dynamic modeling, algorithm for searching river borders, and designation of data interactive interface between the hydrodynamic model and visual simulation platform, are used in the system. This system generates a virtual environment for the earthquake areas by using software Terra Vista and Multigen Creator to integrate the digital elevation model, remote sensing images and vector data, and finely models the key water conservancy projects and the barrier lake regions. By integrating the two dimensional shallow water model and the on-line monitoring data, it achieves the real-time 3-D visualization of remote sensing images and the spatial distribution of barrier lakes. It presents a visual dynamic simulation of the water impounding and the outburst flood in the Tangjiashan barrier lake. Conclusions show that the system can visually display the details of water impounding and can realize 3-D visual simulation of the outburst flood dynamic behaviors, and that it can also represent the flow field in its virtual environment. Thus it provides a useful tool for accuracy test of hydrodynamic model, and also a new approach or reliable technical support to flood control and warning for the downstream cities. © Copyright.
AUTHOR KEYWORDS: Barrier lake breaching; Flood propagation; Hydraulics; Virtual reality; Visual simulation; Wenchuan earthquake
INDEX KEYWORDS: 3D Visualization; Accuracy test; Barrier lake breaching; Digital elevation model; Dynamic behaviors; Dynamic modeling; Dynamic simulation; Flood propagation; Hydrodynamic model; Interactive interfaces; Key techniques; Multigen creator; New approaches; Online monitoring; Remote sensing images; Shallow water model; Technical support; Vector data; Virtual environments; Visual simulation; Visual simulation systems; Water conservancy projects; Water impounding; Wenchuan Earthquake; Data visualization; Display devices; Earthquakes; Flood control; Floods; Fluid dynamics; Hydraulics; Hydrodynamics; Image reconstruction; Lakes; Remote sensing; Three dimensional computer graphics; Virtual reality; Visualization; Three dimensional
REFERENCES: Zhang, Shanghong, 3D watershed terrain modeling method based on software Terra Vista, Shuili Fadian Xuebao/Journal of Hydroelectric Engineering, 25, 3, pp. 36-39, (2006); 
Wang, Xingkui, On the construction of research platform of digital valley, Shuili Xuebao/Journal of Hydraulic Engineering, 37, 2, pp. 233-239, (2006); 
Journal of Remote Sensing, (2008); 
3D Data Field Visualization, (1999); 
Acta Geographica Sinica, (2002); 
undefined, (2008); 
Zhou, Zhenhong, Numerical hydraulic modeling visualization system based on software component, Shuikexue Jinzhan/Advances in Water Science, 13, 1, pp. 9-13, (2002); 
undefined, (2003); 
Zhang, Shanghong, Research of 3-D digital simulation platform for TGP and Gezhouba cascade dispatching, Shuikexue Jinzhan/Advances in Water Science, 18, 3, pp. 451-455, (2007); 
Journal of Engineering Graphics, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, H., Cui, X., Yuan, D., Wang, Z., Jin, J., Wang, M.
AUTHOR FULL NAMES: Liu, Huan (58508244500); Cui, Ximin Min (24833089600); Yuan, Debao (26322229200); Wang, Zhihui (58850909700); Jin, Jingjing (57220848451); Wang, Mengru (57198453922)
58508244500; 24833089600; 26322229200; 58850909700; 57220848451; 57198453922
Study of earthquake disaster population risk based on GIS a case study of Wenchuan earthquake region
(2011), 11 (PART C), pp. 1084 - 1091, Cited 8 times.
DOI: 10.1016/j.proenv.2011.12.164
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863149621&doi=10.1016%2Fj.proenv.2011.12.164&partnerID=40&md5=e65bc516dbc8d7cd5c39e45ff8babed4

AFFILIATIONS: Jiafeng Wang College of Geoscience and Surveying Enginneering, CUMT, Beijing, China
ABSTRACT: For the earthquake disaster frequently happened in china, it is necessary to do some research about risk analysis of earthquake. The paper analyzed major factors of earthquake disaster firstly, established earthquake disaster risk assessment model with data of earthquake disaster between 1966 to 2010 and determinated the value of three factors quantitatively. Finally, taking Wenchuan earthquake region as an example, used the spatial analyst function of ArcMap system, analyzed the risk of population in earthquake disaster and created the population risk distribution map with a division of population high risk areas. © 2011 Published by Elsevier Ltd.
AUTHOR KEYWORDS: Earthquake disaster; Geographic information system; Population hazard; Population risk
INDEX KEYWORDS: Disasters; Environmental engineering; Geographic information systems; Geophysics; Risk analysis; Risk assessment; Earthquake disaster; Earthquake disaster risk; High-risk areas; Major factors; Population hazards; Population risks; Spatial analysts; Wenchuan Earthquake; Earthquakes
REFERENCES: Journal of Catastrophology, (2010); 
Journal of Natural Disasters, (2002); 
Acta Seismologica Sinica, (1997); 
Jouranal of Beijing Normal University Natural Science, (2008); 
Journal of Beijing Normal University Natural Science, (2009); 
Earthquake Cases in China 1966 1999, (1996); 
A Comprehensive Compilation of Historic and Recent Earthquakes Status in China, (1996); 
Journal of Geological Hazards and Environment Preservation, (1998); 
Journal of Institute of Disaster Prevention, (2010); 
Leggett, Daniel J., The application of GIS for flood defence in the Anglian Region: Developing for the future, International Journal of Geographical Information Systems, 10, 1, pp. 103-116, (1996)
PUBLISHER: Elsevier B.V.
CONFERENCE NAME: 2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2011
CONFERENCE DATE: 2011-12-14 through 2011-12-15
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GOLD OPEN ACCESS

Tang, W.H., Zhang, L.M.
AUTHOR FULL NAMES: Tang, Wilson Hon Chung (24537888200); Zhang, Limin Min (58883008100)
24537888200; 58883008100
Development of a risk-based landslide warning system
(2011) Geotechnical Special Publication, (224 GSP), pp. 25 - 49, Cited 13 times.
DOI: 10.1061/41183(418)2
https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051893828&doi=10.1061%2F41183%28418%292&partnerID=40&md5=a44c2e126db95667679b10d11bf1986d

AFFILIATIONS: Hong Kong University of Science and Technology, Hong Kong, Hong Kong
ABSTRACT: A risk-based, real-time landslide warning system is being developed for Provincial Road 303 near the epicenter of the 2008 Wenchuan Earthquake. The essence of the warning system is to warn the traffic or construction teams of the risks in different parts of the road caused by an imminent storm or ongoing rainfall event. The terrains along the road are divided into cells based on types of hazards (landslides, rockfalls, or debris flows) and geomorphic considerations. Digital elevation models for the cells have been constructed based on results of remote sensing and local engineering surveys. A rain-gauge network has been established to measure real time rainfall distributions over the cells, considering changes in elevation and wind direction. The occurrence probability of landslides in each cell in response to a recorded rainfall event is evaluated using standard reliability methods. Based on such failure probabilities, it is possible to produce a real-time risk map along the road. The warning levels for different cells are then determined separately by further considering their respective total potential loss of lives and expected mortality rate. © 2011 ASCE.
AUTHOR KEYWORDS: China; Earthquakes; Geohazards; Landslides; Risk management
INDEX KEYWORDS: Cell engineering; Cells; Cytology; Earthquakes; Gages; Geophysics; Highway administration; Landslides; Maps; Precipitation (meteorology); Rain; Rain gages; Remote sensing; Risk management; Risks; Roads and streets; Rock bursts; Transportation; 2008 wenchuan earthquakes; China; Digital elevation model; Failure Probability; Geo-hazards; Occurrence probability; Rainfall distribution; Reliability methods; Risk assessment
REFERENCES: Apip, Apip, A distributed hydrological-geotechnical model using satellite-derived rainfall estimates for shallow landslide prediction system at a catchment scale, Landslides, 7, 3, pp. 237-258, (2010); 
Landslide risk management concepts and guidelines, Australian Geomechanics Journal, 35, 1, pp. 49-92, (2000); 
Baum, Rex L., Early warning of rainfall-induced shallow landslides and debris flows in the USA, Landslides, 7, 3, pp. 259-272, (2010); 
Analisi Dei Debris Flow in Alcuni Bacini Campione Dell Alta Valle Di Susa, (1999); 
U S Geological Survey Professional Paper, (1975); 
Casagli, Nicola, Monitoring, prediction, and early warning using ground-based radar interferometry, Landslides, 7, 3, pp. 291-301, (2010); 
Chang, S. Y., Debris flow detection using image processing techniques, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, pp. 549-560, (2007); 
Chau, Kam Tim, Rockfall Hazard Analysis for Hong Kong Based on Rockfall Inventory, Rock Mechanics and Rock Engineering, 36, 5, pp. 383-408, (2003); 
Cheung, Raymond Wai Man, Reliability of deteriorating slopes, Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 131, 5, pp. 589-597, (2005); 
Cheung, Raymond Wai Man, Realistic assessment of slope reliability for effective landslide hazard management, Geotechnique, 55, 1, pp. 85-94, (2005)
PUBLISHER: American Society of Civil Engineers (ASCE) onlinejls@asce.org
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tang, C., Li, W., Ding, J., Huang, X.-C.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Li, Weile (25936551300); Ding, Jun (55463437900); Huang, Xiangchao (37067538000)
35932953300; 25936551300; 55463437900; 37067538000
Field investigation and research on giant debris flow on August 14, 2010 in Yingxiu town, epicenter of Wenchuan earthquake
(2011) Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 36 (1), pp. 172 - 180, Cited 51 times.
DOI: 10.3799/dqkx.2011.018
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952774414&doi=10.3799%2Fdqkx.2011.018&partnerID=40&md5=cefe76a2ddc69be0d1c553b79086d7f3

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A rainstorm triggered debris flow hazard occurred in Hongchun valley, Yingxiu town, epicenter of the Wenchuan earthquake on August 14, 2010. This event transported huge material sediment to the watercourse of the Minjiang River and produced a natural dam, resulting in flash flood in the new Yingxiu town. The flood claimed 13 lives, with a further 59 listed as missing. About 8000 local residents were rapidly evacuated from their homes. The debris flow resulted from the coaction of the rainfall and earthquake. Therefore, it is significant for better understanding of development characters of debris flows to conduct the research on the initiation and movement process in high seismic intensity area. This paper studies characteristics of the initiation conditions and depositional fans of the debris flow based on field reconnaissance and interpretations of aerial photographs, focusing on loose sediment supply in source areas of debris flows. On the basis of the above analysis, the initiation and deposition process of debris flows are discussed. The catastrophic event indicates that the areas impacted by the Wenchuan earthquake become more prone to debris flow occurrences in the future. So it is important to assess debris flow risk and take measures to enhance hazard monitoring and offer early warnings for debris flows in the earthquake areas. The control work is also necessary for debris flow hazard mitigation.
AUTHOR KEYWORDS: Barrier dam; Debris flow; Inundation; Wenchuan earthquake; Yingxiu town
INDEX KEYWORDS: Barrier dam; Debris flow; Inundation; Wenchuan earthquake; Yingxiu town; Anoxic sediments; Dams; Earthquakes; Floods; Hazards; Photography; Sedimentology; Storms; Debris
REFERENCES: Journal of Glaciology and Geocryology, (2004); 
Science of Soil and Water Conservation, (2003); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Liu, Chiannan, Impacts of september 21, 1999 Chi-Chi earthquake on the characteristics of gully-type debris flows in central Taiwan, Natural Hazards, 47, 3, pp. 349-368, (2008); 
Journal of Catastrophology, (1992); 
Tang, Chuan, Dynamic analysis on rainfall-induced landslide activity in high seismic intensity areas of the Wenchuan earthquake using remote sensing image, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 35, 2, pp. 317-323, (2010); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Acta Sedimentologica Sinica, (2008); 
Advances in Earth Science, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tang, C., Zhu, J., Qi, X.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Zhu, Jing (55704611000); Qi, Xin (35932814100)
35932953300; 55704611000; 35932814100
Landslide hazard assessment of the 2008 wenchuan earthquake: A case study in Beichuan area
(2011) Canadian Geotechnical Journal, 48 (1), pp. 128 - 145, Cited 53 times.
DOI: 10.1139/T10-059
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78951494004&doi=10.1139%2FT10-059&partnerID=40&md5=82ef23163ad31e41c3c3cc483e0e8d22

AFFILIATIONS: State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan earthquake (magnitude Ms = 8.0) of 12 May 2008 triggered widespread and large-scale landslides over an area of about 50 000 km2. A study was undertaken to determine the primary factors associated with seismic landslide occurrence. An index-based approach used to assess earthquake-triggered landslide hazard in the central part of the Wenchuan earthquake area affected is described. Slope gradient, relief amplitude, lithology, bedding-slope relations, fault proximity, stream proximity, and antecedent rainfall are recognized as factors that may have had an important influence on landslide occurrence. The assessment of the influence of each of these factors is presented through use of a series of maps showing areas of low, moderate, high, and very high landslide hazard. Areas identified as having "very high and high landslide hazard" were located along the earthquake-source fault and along both banks of the Jian River. The role of rainfall is very significant for future landslide occurrence in the earthquake area. The results of this study will assist decision makers in the selection of safe sites during the reconstruction process. The maps can also be used for landslide risk management in the study area.
AUTHOR KEYWORDS: Beichuan area; Geographical information system (GIS); Hazard mapping; Index-based method; Landslides; Wenchuan earthquake
INDEX KEYWORDS: Beichuan area; Geographical information systems; Hazard mapping; Index-based method; Wenchuan Earthquake; Earthquakes; Geographic information systems; Hazards; Information systems; Lithology; Rain; Rating; Risk analysis; Risk management; Landslides; amplitude; antecedent conditions; decision making; fault; GIS; hazard assessment; index method; landslide; lithology; mapping method; rainfall; reconstruction; Sichuan earthquake 2008; slope; Beichuan; China; Sichuan
REFERENCES: Akgun, Aykut, GIS-based landslide susceptibility for Arsin-Yomra (Trabzon, North Turkey) region, Environmental Geology, 51, 8, pp. 1377-1387, (2007); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Anbalagan, Rathinam, Landslide hazard and risk assessment mapping of mountainous terrains - A case study from Kumaun Himalaya, India, Engineering Geology, 43, 4, pp. 237-246, (1996); 
Ardizzone, Francesca, Impact of mapping errors on the reliability of landslide hazard maps, Natural Hazards and Earth System Sciences, 2, 1-2, pp. 3-14, (2002); 
Ayalew, Lulseged, Landslide susceptibility mapping using GIS-based weighted linear combination, the case in Tsugawa area of Agano River, Niigata Prefecture, Japan, Landslides, 1, 1, pp. 73-81, (2004); 
Proceedings of 4th International Symposium on Landslides, (1984); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Carrara, Alberto, Multivariate models for landslide hazard evaluation, Journal of the International Association for Mathematical Geology, 15, 3, pp. 403-426, (1983); 
Carrara, Alberto, Use of GIS technology in the prediction and monitoring of landslide hazard, Natural Hazards, 20, 2-3, pp. 117-135, (1999); 
Chigira, Masahiro, Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China, Geomorphology, 118, 3-4, pp. 225-238, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tao, S., Hu, D., Zhao, W.
AUTHOR FULL NAMES: Tao, Shu (36683220000); Hu, Deyong (22233958700); Zhao, Wenji (12787367300)
36683220000; 22233958700; 12787367300
Susceptibility assessment of earthquake-triggered landslide in Wenchuan
(2010) Proceedings of SPIE - The International Society for Optical Engineering, 7841 (1), art. no. 78411J, Cited 4 times.
DOI: 10.1117/12.873273
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650413279&doi=10.1117%2F12.873273&partnerID=40&md5=3d405c6886bc36978a0dfdf8a2fa4b3b

AFFILIATIONS: Key Laboratory of Integrated Disaster Assessment and Risk Governance, Capital Normal University, Beijing, Beijing, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake, occurred on 12 May 2008 in Sichuan Province, collapsed a great many houses and injured hundreds of thousands of people. Undoubtedly, it can be predicted that secondary earthquake landslides will draw much attention during a long time after the earthquake due to the severe geological hazard. In order to remove threat from the secondary disasters effectively, this study used techniques of remote sensing and GIS to generate susceptibility maps, taking the case of Wenchuan County. Seven factors controlling landslide occurrence have been taken account into the susceptibility assessment, including elevation, slop, aspect, lithology, seismic intensity, distance to faults and rivers. According to the probability that predicts the possibility of landslide occurrence calculated applying information value method and logistic regression separately, the study zone was ultimately categorized into five classes, specifically, "extremely low", "low", "moderate", "high" and "very high". These results have been proved to reflect closely the spatial distributions of landslides in the study area.© 2010 SPIE.
AUTHOR KEYWORDS: Earthquake; GIS; Landslide; Remote sensing; Susceptibility assessment
INDEX KEYWORDS: Geological hazards; GIS; Information value; Logistic regressions; Remote sensing and GIS; Seismic intensity; Sichuan province; Spatial distribution; Study areas; Susceptibility assessment; Susceptibility maps; Wenchuan Earthquake; Data handling; Earthquakes; Lithology; Rating; Remote sensing; Landslides
REFERENCES: Wang, Fawu, Preliminary investigation of some large landslides triggered by the 2008 Wenchuan earthquake, Sichuan Province, China, Landslides, 6, 1, pp. 47-54, (2009); 
Wu, Yiping, Spatial prognosis studying of landslide hazard, Dizhi Keji Qingbao/Geological Science and Technology Information, 20, 2, pp. 87-90, (2001); 
Rock and Soil Mechanics, (2003); 
Greco, Roberto, Logistic Regression analysis in the evaluation of mass movements susceptibility: The Aspromonte case study, Calabria, Italy, Engineering Geology, 89, 1-2, pp. 47-66, (2007); 
Journal of Remote Sensing, (2003); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Karsli, Fevzi, Effects of land-use changes on landslides in a landslide-prone area (Ardesen, Rize, NE Turkey), Environmental Monitoring and Assessment, 156, 1-4, pp. 241-255, (2009); 
Chen, Xiaoli, Triggering factors susceptibility of earthquake-induced landslides in 1976 Longling Earthquake, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 45, 1, pp. 104-109, (2009); 
Wu, Caiyan, Landslides and slope aspect in the Three Gorges reservoir area based on GIS and information value model, Wuhan University Journal of Natural Sciences, 11, 4, pp. 773-779, (2006); 
Saro, Lee M., Landslide susceptibility mapping in the Damrei Romel area, Cambodia using frequency ratio and logistic regression models, Environmental Geology, 50, 6, pp. 847-855, (2006)
CONFERENCE NAME: 6th International Symposium on Digital Earth: Data Processing and Applications
CONFERENCE DATE: 2009-09-09 through 2009-09-12
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Han, Y., Liu, H., Zhu, B., Han, J., Yang, Y., Zhang, Y.
AUTHOR FULL NAMES: Han, Yongshun (8045872900); Liu, Hongjiang (36521211700); Zhu, Boqin (59122327600); Han, Jun (55656662100); Yang, Yingchang (35212298700); Zhang, Yu (58406534800)
8045872900; 36521211700; 59122327600; 55656662100; 35212298700; 58406534800
Distribution and prevention of dammed lakes triggered by Wenchuan Earthquake
(2010) Proceedings of SPIE - The International Society for Optical Engineering, 7841 (1), art. no. 78411K, Cited 1 times.
DOI: 10.1117/12.873274
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650316533&doi=10.1117%2F12.873274&partnerID=40&md5=0c07844222e08f71a3b51078b89d15e8

AFFILIATIONS: School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, Hunan, China; School of Urban Management and Resource Environment, Yunnan University of Finance and Economics, Kunming, Yunnan, China; Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: Wenchuan earthquake induced large-scale of collapses and landslides which blocked river channels and brought about quantities of dammed lakes. The number and the scale of dammed lakes are extremely rare in the world. Besides the backwater of the dammed lakes can flood the road traffic, villages and farmland on the upstream, it can severely threaten the safety of the people's lives and properties on the downstream. Once the dammed lakes burst out, they can cause severe flood disaster. Therefore, it is urgent to monitor the dammed lakes, study their distribution and analyze their development by means of remote sensing (RS) and geography information system (GIS) after the earthquake. In this paper, 145 high-resolution images were processed and 31 severely-afflicted counties were studied through RS monitoring and field investigation. By the time of May 28,2008, 257 dammed lakes existing more than 14 days were identified and there were 34 dammed lakes with capacity of more than 100 000m3. Based on these conditions, the distribution and development of dammed lakes were discussed and the findings showed that: (a) The dammed lakes induced by Wenchuan earthquake mainly scatter in Beichuan, Wenchuan, Shifang, Mianzhu and Anxian counties, and there exist 154 dammed lakes in these regions, which is 59.92 percent of the total. (b) 95.3 percent of the dammed lakes are within 10km of three major fault zones of Longmen Mountains and the relationship between the number of dammed lakes and their distance to fault zone accords with the law of logarithmic decrement. (c) Most of dammed lakes are distributed in the upper reaches of Minjiang River, Tuojiang River, Jianjiang River and Fujiang River, etc. in rosary. (d) The distribution of dammed lakes in the study areas is dominated by seismic intensity, lithology, slope and altitude. In the next 5-10 years, collapses, landslides and debris flows in the study area will occur frequently and severely and they are likely to block river channels and form dammed lakes. As rainy season comes, the risk of dammed lakes forming and bursting is increasing. So it is necessary to reinforce the real-time monitoring of dammed lakes, make risk assessment and formulate the emergency countermeasures.© 2010 SPIE.
AUTHOR KEYWORDS: Dammed lake; Distribution; Prevention; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Dammed lake; Debris flows; Distribution; Fault zone; Field investigation; Flood disaster; High resolution image; Logarithmic decrement; Longmen Mountain; Minjiang River; Prevention; Rainy seasons; Real time monitoring; River channels; Road traffic; Seismic intensity; Study areas; Wenchuan Earthquake; Data handling; Debris; Earthquakes; Floods; Lakes; Landslides; Lithology; Remote sensing; Risk assessment; Rivers
REFERENCES: Quaternary Sciences, (2004); 
Remote Sensing for Land Resources, (2008); 
Earth Science Frontiers, (2008); 
Documented Historical Landslide Dams from Around the World, (1991); 
Clague, John Joseph, Formation and failure of natural dams in the Canadian Cordillera, Bulletin of the Geological Survey of Canada, 464, (1994); 
Journal of Geological Hazards and Environment Preservation, (1995); 
Ermini, Leonardo, Prediction of the behaviour of landslide dams using a geomorphological dimensionless index, Earth Surface Processes and Landforms, 28, 1, pp. 31-47, (2003); 
Shang, Yanjun, A super-large landslide in Tibet in 2000: Background, occurrence, disaster, and origin, Geomorphology, 54, 3-4, pp. 225-243, (2003); 
Korup, Oliver, Geomorphometric characteristics of New Zealand landslide dams, Engineering Geology, 73, 1-2, pp. 13-35, (2004); 
Cui, Peng, Distribution and risk analysis of dammed lakes reduced by Wenchuan earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 35-42, (2009)
CONFERENCE NAME: 6th International Symposium on Digital Earth: Data Processing and Applications
CONFERENCE DATE: 2009-09-09 through 2009-09-12
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Hazarika, M.K., Singh, S., Uddin, M.S., Samarakoon, L.
AUTHOR FULL NAMES: Hazarika, Manzul Kumar (23989260900); Singh, Sahdev (56175941600); Uddin, Md Shahab (55348659100); Samarakoon, Lal (6506744858)
23989260900; 56175941600; 55348659100; 6506744858
Present status and trends of natural hazards in the asiapacific region
(2010), 2, pp. 1433 - 1439, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865650880&partnerID=40&md5=a3472c055942c01c91fc0ec0f886c3a1

AFFILIATIONS: Geoinformatics Center, Asian Institute of Technology Thailand, Khlong Luang, Pathum Thani, Thailand; Alternatives International, Pathumtani, Thailand; Asian Institute of Technology Thailand, Khlong Luang, Pathum Thani, Thailand
ABSTRACT: The Asia-Pacific region is prone to a wide variety of disasters caused by natural hazards. According to the EM-DAT database, between 1975-2006, while the region experienced 37% of number of world's disasters and 44% of economic losses, it suffered more than 57% of total number of global mortality and 88% of the affected populations. Unfortunately, this trend has continued in subsequent years and in 2008 alone, out of the 10 worst disasters in terms of total human losses nine occurred in the Asia-Pacific region and consequently 98% of people killed by disasters worldwide were from Asia. The same year witnessed two disasters of historical dimension, Cyclone Nargis in Myanmar and the Wenchuan earthquake in China, both in Asia, causing large-scale death and destruction. Asia-Pacific region is particularly prone to climate-sensitive hydro-meteorological disasters such as floods (35%), windstorms (28%) and water-induced landslides (8%). The global distribution shows that Asia-Pacific region is accounted for more than 45% of the world's water-related disaster fatalities during the period from 1980 to 2009, and 90% of all water-related casualties. A comparison between earthquakes and climate sensitive hydro-meteorological disasters was done for the region for the time period 1980-2009 using EM-DAT and it was found that the increase in the number of climate sensitive disasters is much higher than the increase in the number of earthquakes. In 1980, there were 11 reported earthquake disasters compared to 55 climate sensitive disasters (a difference of 44), whereas in 2009, 15 earthquakes vs. 124 climate sensitive disasters (a difference of 109).
AUTHOR KEYWORDS: Disaster; EM-DAT; Natural hazard
INDEX KEYWORDS: Asia Pacific region; Earthquake disaster; Economic loss; EM-DAT; Global distribution; Myanmars; Natural hazard; Present status; Time-periods; Wenchuan Earthquake; Earthquakes; Hazards; Losses; Remote sensing; Storms; Disasters
REFERENCES: Cred Crunch, (2010); 
Raw Data Source, (2010)
CONFERENCE NAME: 31st Asian Conference on Remote Sensing 2010, ACRS 2010
CONFERENCE DATE: 2010-11-01 through 2010-11-05
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Yu, J.H., Ge, L.
AUTHOR FULL NAMES: Yu, Junghum (36723086500); Ge, Linlin (23392861200)
36723086500; 23392861200
Change detection from ALOS/PALSAR imagery for the 2008 Chinese Wenchuan earthquake
(2010), 2, pp. 1638 - 1643, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865626280&partnerID=40&md5=360168392b01b67b3876e1287e16aa2f

AFFILIATIONS: School of Surveying and Spatial Information Systems, UNSW Sydney, Sydney, NSW, Australia
ABSTRACT: On May 12, 2008, the earthquake had a magnitude 8.0 and the epicentre was in Wenchuan, Sichuan Province, which locates in the southwest of China occurring at 06:28:01.42 UTC. The Wenchuan earthquake damaged over 71,000 dead persons and huge numbers of people have been and continue to be affected earthquake influence. Synthetic Aperture Radar (SAR) images provide useful information for many applications, such as oil slick pollution monitoring, flooding, natural disasters and ground change detection. Especially, in the time series everts SAR technique has powerful capability due to its independence from the all weather and all time conditions. Therefore, using SAR imagery for disaster management and damage assessment in urban and rural areas is an important application of SAR. In this paper, disaster effected area detection and damaged area size calculation is presented based on the difference of the intensity value of each SAR data which have a different ground condition in same area.
AUTHOR KEYWORDS: Change detection; Earth monitoring; Intensity difference detection; Sar
INDEX KEYWORDS: ALOS/PALSAR; Area detection; Change detection; Damage assessments; Damaged area; Disaster management; Epicentre; Ground conditions; Intensity difference; Intensity values; Natural disasters; Oil slick pollution; Sar; SAR data; SAR imagery; SAR techniques; Sichuan province; Synthetic aperture radar (SAR) images; Time condition; Urban and rural areas; Wenchuan Earthquake; Damage detection; Disaster prevention; Disasters; Remote sensing; Rural areas; Signal detection; Synthetic aperture radar; Earthquakes
REFERENCES: Cctv Internationa, (2008); 
School of Surveying and Spatial Information Systems, (2005); 
Gamba, Paolo Ettore, Detection and extraction of buildings from interferometric SAR data, IEEE Transactions on Geoscience and Remote Sensing, 38, 1 II, pp. 611-618, (2000); 
undefined, (2012); 
undefined, (2012); 
undefined, (2012); 
International Federation of Red Cross and Red Crescent Societies; 
Satellite Images of China Earthquake Written by Nancy Atkinson, (2012); 
Tech Rep JPL D 14293, (1997); 
Matsuoka, Masashi, Building damage detection using satellite SAR intensity images for the 2003 Algeria and Iran earthquakes, International Geoscience and Remote Sensing Symposium (IGARSS), 2, pp. 1099-1102, (2004)
CONFERENCE NAME: 31st Asian Conference on Remote Sensing 2010, ACRS 2010
CONFERENCE DATE: 2010-11-01 through 2010-11-05
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Yang, X., Yang, W., Li, Y.-H., Hu, B.-R.
AUTHOR FULL NAMES: Yang, Xin (8659596100); Yang, Wunian (7407756597); Li, Yahui (37037718800); Hu, Baorong (37037461100)
8659596100; 7407756597; 37037718800; 37037461100
Land use land cover change analysis after the earthquake of Wenchuan
(2010), art. no. 5630996, Cited 4 times.
DOI: 10.1109/ICMULT.2010.5630996
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952209096&doi=10.1109%2FICMULT.2010.5630996&partnerID=40&md5=38c8e5f1f55497392fbaf76235efa551

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; Institute of RS and GIS, Chengdu University of Technology, Chengdu, China
ABSTRACT: This paper using remote sensing technology, extract land use and land cover change(LUCC), topography and geomorphology, vegetation coverage information of Wenchuan city. According to 2007-2008 type of land use change on the current situation and the dynamic changes in Wenchuan LUCC analysis. The results showed that after the earthquake, the forest cover of Wenchuan coverage from 67.59% in 2007 fell to 60.73 percent, dropped 6.86%, forest dynamic degree reached 10.18%; grass coverage from 16.29% in 2007 fell to 12.55%, dropped 3.74%, the dynamic degree reached 23%. The earthquake triggered landslides, avalanches, landslides and other geological hazards. Large tracts of woodland, grassland turned into bare land .Covering an area of 10.63%, dynamic degree is up to 291%, about 434.12km2, caused serious damage to the ecological environment to Wenchuan city. ©2010 IEEE.
AUTHOR KEYWORDS: Land use and land cover; Topography and geomorphology; Vegetation coverage; WenChuan earthquake
INDEX KEYWORDS: Bare lands; Current situation; Dynamic changes; Ecological environments; Forest cover; Forest dynamics; Geological hazards; Land use and land cover; Land use and land cover change; Land use land cover change; Land-use change; Remote sensing technology; Vegetation coverage; Wenchuan Earthquake; Earthquakes; Geomorphology; Land use; Landslides; Remote sensing; Topography; Vegetation; Landforms
REFERENCES: Study of Land Use Land Cover Change in China, (2004); 
Geographical Research, (2003); 
Application and Analysis of Remote Sensing Image, (2004); 
Calver, Michael C., Lessons from preventive medicine for the precautionary principle and ecosystem health, Ecosystem Health, 6, 2, pp. 99-107, (2000); 
Application of Remote Environment Model, (2011); 
Fazakas, Z., Volume and forest cover estimation over southern sweden using avhrr data calibrated with tm data, International Journal of Remote Sensing, 17, 9, pp. 1701-1709, (1996); 
Research of Central Tibet Resources and Environment Monitoring and Evaluation by Remote Sensing, (1998); 
Byrne, G. F., Monitoring land-cover change by principal component analysis of multitemporal landsat data, Remote Sensing of Environment, 10, 3, pp. 175-184, (1980); 
Tang, Chuan, Dynamic analysis on rainfall-induced landslide activity in high seismic intensity areas of the Wenchuan earthquake using remote sensing image, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 35, 2, pp. 317-323, (2010); 
Tang, Huiming, Characteristics of landslides induced by the great Wenchuan earthquake, Journal of Earth Science, 21, 1, pp. 104-113, (2010)
SPONSORS: IEEE Nanjing Section GRSS Chapter, Southwest Petroleum University of China, College of Computer and Information of Hohai University
CONFERENCE NAME: 2010 International Conference on Multimedia Technology, ICMT 2010
CONFERENCE DATE: 2010-10-29 through 2010-10-31
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Peng, L., Yang, W., Pan, P.-F., Li, Z.-G., Hu, G.-C.
AUTHOR FULL NAMES: Peng, Li (35206100100); Yang, Wunian (7407756597); Pan, Peifen (36554711200); Li, Zhigang (57190981890); Hu, Guochao (35191894600)
35206100100; 7407756597; 36554711200; 57190981890; 35191894600
Applying remote sensing and spacial analysis technology to locating transitional shelters in earthquake areas
(2010), art. no. 5691926, pp. 6463 - 6466, Cited 2 times.
DOI: 10.1109/ICISE.2010.5691926
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951984778&doi=10.1109%2FICISE.2010.5691926&partnerID=40&md5=d30c3b60e8a2580035ca62b8823cd454

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Violent earthquakes damaged buildings, towns and cities. The earthquakes and the subsequent secondary disasters, such as landslips, landslides and debris flows, brought immediate threats to people there. The rescue tasks need updated and appropriate information for site selection of emergency refuges and transitional shelters, especially when a city has been destroyed and the original earthquake emergency refuge planning can no longer work well. This paper introduced remote sensing and spatial analysis technology to locating medium and long term transitional shelters in Wenchuan earthquake areas. The proposed model assessed geological security, rescue path, service range, water system, land coverage and topographical factors, and acquired a valid result. © 2010 IEEE.
AUTHOR KEYWORDS: Earthquake; Location; Remote sensing; Spacial analysis; Transitional shelter
INDEX KEYWORDS: Debris flows; Long term; Refuge planning; Spacial analysis; Spatial analysis; Transitional shelter; Violent earthquakes; Water system; Wenchuan Earthquake; Debris; Information science; Remote sensing; Site selection; Tracking (position); Earthquakes
REFERENCES: Research of Soil and Water Conservation, (2001); 
Yang, Wenbin, Planning construction of earthquake emergency shelters and urban disaster reduction, Journal of Natural Disasters, 13, 1, pp. 126-131, (2004); 
Li, Gang, Study of urban earthquake emergency shelters planning, Beijing Gongye Daxue Xuebao / Journal of Beijing University of Technology, 32, 10, pp. 901-906, (2006); 
A Textbook of Gb17741 2005 Evaluation of Seismic Safety for Engineering Sites, (2006); 
Journal of Disaster Prevention and Mitigation Engineering, (2008); 
Bulletin of Chinese Academy of Sciences, (2008); 
Journal of Mountain Science, (2008); 
Journal of Mountain Science, (2004); 
Journal of Mountain Science, (2008); 
Journal of Engineering Geology, (2008)
SPONSORS: Hangzhou Dianzi University, United Nations Educational Scientific and Cultural Organization, Nanjing University of Information Science and Technology, Georgia State University, Anhui University of Science and Technology, College of Computer and Information of Hohai University
CONFERENCE NAME: 2nd International Conference on Information Science and Engineering, ICISE2010
CONFERENCE DATE: 2010-12-04 through 2010-12-06
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jin, F., Yan, J., Pan, D.
AUTHOR FULL NAMES: Jin, Fuxin (36975822300); Yan, Jian'gang (16508333100); Pan, Donghua (56265862700)
36975822300; 16508333100; 56265862700
Disaster relief decision support system of army aviation based on the "3S" integrated technology
(2010), art. no. 5689636, pp. 30 - 33, Cited 1 times.
DOI: 10.1109/ICITIS.2010.5689636
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951639620&doi=10.1109%2FICITIS.2010.5689636&partnerID=40&md5=20bc5f6397b699c4480c4667f493fb3e

AFFILIATIONS: Naval Aeronautical Engineering Academy Yantai, Yantai, Shandong, China; Department of Basic Courses, Army Aviation Institute, Beijing, China; Department of Personnel Office, Ministry of Civil Affairs, Beijing, Beijing, China
ABSTRACT: Disaster relief is a systematic project, application of 3S integration technology in disaster relief support is a hot topic and the development trend in current disaster relief. With the constant development of space technology and satellite accuracy, as well as the expansion of GIS supported by computer software and hardware, 3S technology is bound to permeate every link of disaster rescue. Relief decision-making is the basic guarantee of successful disaster relief, "3S" technology in the relief is playing an increasingly prominent role. Based on the practical problems confronted by the army aviation in Wenchuan earthquake relief work, this paper proposes using 3S technique for the aviation relief decision support system, and on the basis of the composition of "3S", this system in relief support several specific applications, including the route choice of the rescue helicopter, airline safety evaluation and analysis, landing site selection and logistics flow distribution, thus ensure the efficient disaster relief work smoothly. © 2010 IEEE.
AUTHOR KEYWORDS: "3S" technology; Army aviation; Relief policymaking
INDEX KEYWORDS: ''3S'' technology; 3S techniques; Airline safety; Army aviation; Development trends; Disaster relief; Disaster rescue; Flow distribution; Integrated technologies; Integration technologies; Practical problems; Relief policymaking; Relief works; Rescue helicopter; Route choice; Space technologies; Wenchuan Earthquake; Aircraft accidents; Artificial intelligence; Aviation; Computer hardware; Decision making; Decision support systems; Decision theory; Disaster prevention; Information theory; Site selection; Technology; Security of data
REFERENCES: Journal of the National Defense University, (2004); 
Chinese Engineering Science, (2002); 
Journal of Surveying and Mapping, (2004); 
Journal of Mapping and Spatial Information, (2008)
SPONSORS: IEEE Beijing Section, Beijing University of Posts and Telecommunications, Chinese Institute of Electronics, Natural Science Foundation of China
CONFERENCE NAME: 2010 IEEE International Conference on Information Theory and Information Security, ICITIS 2010
CONFERENCE DATE: 2010-12-17 through 2010-12-19
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, M., Qiao, J., He, S.
AUTHOR FULL NAMES: Wang, Meng (25927651000); Qiao, Jianping (24485090400); He, Siming (55978326000)
25927651000; 24485090400; 55978326000
GIS-based earthquake-triggered landslide hazard zoning using contributing weight model
(2010) Journal of Mountain Science, 7 (4), pp. 339 - 352, Cited 24 times.
DOI: 10.1007/s11629-010-2054-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79251645907&doi=10.1007%2Fs11629-010-2054-7&partnerID=40&md5=41c52534e25813948265ac67fedbda93

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Earthquake-triggered landslides have aroused widespread attention because of their tremendous ability to harm people's lives and properties. The best way to avoid and mitigate their damage is to develop landslide hazard maps and make them available to the public in advance of an earthquake. Future construction can then be built according to the level of hazard and existing structures can be retrofit as necessary. During recent years various approaches have been made to develop landslide hazard maps using statistical analysis or physical models. However, these methods have limitations. This study introduces a new GIS-based approach, using the contributing weight model, to evaluate the hazard of seismically-induced landslides. In this study, the city and surrounding area of Dujiangyan was selected as the research area because of its moderate-high seismic activity. The parameters incorporated into the model that related to the probability of landslide occurrence were: slope gradient, slope aspect, geomorphology, lithology, base level, surface roughness, earthquake intensity, fault proximity, drainage proximity, and road proximity. The parameters were converted into raster data format with a resolution of 25×25m2 pixels. Analysis of the GIS correlations shows that the highest earthquake-induced landslide hazard areas are mainly in the hills and in some of the moderately steep mountainous areas of central Dujiangyan. The highest hazard zone covers an area of 11.1% of the study area, and the density distribution of seismically-induced landslides was 3.025/km2 from the 2008 Wenchuan earthquake. The moderately hazardous areas are mainly distributed within the moderately steep mountainous regions of the northern and southeastern parts of the study area and the hills of the northeastern part; covering 32.0% of the study area and with a density distribution of 2.123/km2 resulting from the Wenchuan earthquake. The lowest hazard areas are mainly distributed in the topographically flat plain in the northeastern part and some of the relatively gently slopes in the moderately steep mountainous areas of the northern part of Dujiangyan and the surrounding area. The lowest hazard areas cover 56.9% of the study area and exhibited landslide densities of 0.941/km2 and less from the Wenchuan earthquake. The quality of the hazard map was validated using a comparison with the distribution of landslides that were cataloged as occurring from the Wenchuan earthquake. 43.1% of the study area consists of high and moderate hazardous zones, and these regions include 83.5% of landslides caused by the Wenchuan earthquake. The successful analysis shows that the contributing weight model can be effective for earthquake-triggered landslide hazard appraisal. The model's results can provide the basis for risk management and regional planning is. © 2010 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Contributing weight model; Earthquake-triggered landslide; GIS; Hazard zoning
REFERENCES: Ayalew, Lulseged, Landslide susceptibility mapping using GIS-based weighted linear combination, the case in Tsugawa area of Agano River, Niigata Prefecture, Japan, Landslides, 1, 1, pp. 73-81, (2004); 
Capolongo, Domenico, Evaluating earthquake-triggered landslide hazard at the basin scale through GIS in the Upper Sele river Valley, Surveys in Geophysics, 23, 6, pp. 595-625, (2002); 
Carro, Monica, The application of predictive modeling techniques to landslides induced by earthquakes: The case study of the 26 September 1997 Umbria-Mache earthquake (Italy), Engineering Geology, 69, 1-2, pp. 139-159, (2003); 
Chau, Kam Tim, Landslide hazard analysis for Hong Kong using landslide inventory and GIS, Computers and Geosciences, 30, 4, pp. 429-443, (2004); 
Earthquake Intensity Zoning Map of China 1 1000000, (2008); 
Rock Engineering Systems Theory and Practice, (1992); 
Jibson, Randall W., A method for producing digital probabilistic seismic landslide hazard maps, Engineering Geology, 58, 3-4, pp. 271-289, (2000); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Koppula, Sivajogi D., Pseudo-static analysis of clay slopes subjected to earthquakes, Geotechnique, 34, 1, pp. 71-79, (1984); 
Lee, Chyityi Tyi, Statistical approach to earthquake-induced landslide susceptibility, Engineering Geology, 100, 1-2, pp. 43-58, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, J., Ju, N., Liu, H., Li, W., He, C.
AUTHOR FULL NAMES: Huang, Jian (56063226300); Ju, Nengpan (8377755300); Liu, Hanhu (9240308700); Li, Weile (25936551300); He, Chaoyang (36918503300)
56063226300; 8377755300; 9240308700; 25936551300; 36918503300
Information management system of landslides triggered by Wenchuan Earthquake on 12th May, 2008 - Based on WebGIS and database technology
(2010), art. no. 5660411, Cited 0 times.
DOI: 10.1109/ICEEE.2010.5660411
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78651517844&doi=10.1109%2FICEEE.2010.5660411&partnerID=40&md5=f555b9c869b87ca053a1c0df485dd07b

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: Wenchuan Earthquake triggered more than thousands of landslides, which seriously threatened the lives and properties of local people in the disaster areas. Even though emergency investigation and monitoring have been carried on after the earthquake in order to make sure the reconstruction work well, there is still need an effective way to manage the considerable disaster information immediately. This paper presents a preliminary study of a WebGIS-based approach to the representation, organization and access of geohazard information- including map & data query, statistic, spatial analysis and early warning. The system is not only to assist in the decision-making process for administrator to prevention disaster, but also to provide a platform for the more end-users with limited GIS knowledge to understand the geohazard and a cost-saving solution to access up-to-date spatial datasets customized for a specific topic. ©2010 IEEE.
AUTHOR KEYWORDS: Geohazard; Information management system; Wenchuan Earthquake
INDEX KEYWORDS: Cost-saving; Data query; Database technology; Decision making process; Disaster areas; Disaster Information; Early warning; End-users; Geohazard; Information management system; Information management systems; Local people; Spatial analysis; Spatial datasets; Web-GIS; Wenchuan Earthquake; Decision making; Disaster prevention; Earthquakes; Hazards; Landslides; Information management
REFERENCES: Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Engineering Geology, (2008); 
Mathiyalagan, V., A WebGIS and geodatabase for Florida's wetlands, Computers and Electronics in Agriculture, 47, 1, pp. 69-75, (2005); 
Shan-Jun, Mao, Design and development of safety production management information system based on a digital coalmine, Procedia Earth and Planetary Science, 1, 1, pp. 1121-1127, (2009); 
Design and Implementation of Webgis Based Forecasting and Early Warning Information System for Burst Geological Hazards, (2007); 
Pessina, Vera, A WebGis tool for seismic hazard scenarios and risk analysis, Soil Dynamics and Earthquake Engineering, 29, 9, pp. 1274-1281, (2009); 
Helbing, Dirk, Assessing interaction networks with applications to catastrophe dynamics and disaster management, Physica A: Statistical Mechanics and its Applications, 328, 3-4, pp. 584-606, (2003); 
Zhou, Yanxi, An object-relational prototype of GIS-based disaster database, Procedia Earth and Planetary Science, 1, 1, pp. 1060-1066, (2009); 
Walker, Gordon P., The people and the hazard: The spatial context of major accident hazard management in Britain, Applied Geography, 20, 2, pp. 119-135, (2000); 
Earth Science Frontiers, (2007)
SPONSORS: IEEE Consumer Electronics Society, Henan Polytechnic University, Huazhong Normal University
CONFERENCE NAME: 2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010
CONFERENCE DATE: 2010-11-07 through 2010-11-09
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wei, F., Chernomorets, S., Aristov, K., Petrakov, D., Tutubalina, O., Su, P.C., Jiang, Y.H., Xu, A., Petrasov, A.
AUTHOR FULL NAMES: Wei, Fangqiang (14033564100); Chernomorets, Sergey S. (15131000100); Aristov, Konstantin A. (36665747800); Petrakov, Dmitry A. (15081122600); Tutubalina, Olga (6507141826); Su, Pengcheng (55234493100); Jiang, Yuhong (7404832288); Xu, Aisong (36705412500); Petrasov, Alexey (36705020900)
14033564100; 15131000100; 36665747800; 15081122600; 6507141826; 55234493100; 7404832288; 36705412500; 36705020900
A Seismically triggered landslide in the Niujuan valley near the epicenter of the 2008 Wenchuan earthquake
(2010) Journal of Earth Science, 21 (6), pp. 901 - 909, Cited 11 times.
DOI: 10.1007/s12583-010-0143-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649968091&doi=10.1007%2Fs12583-010-0143-8&partnerID=40&md5=c5b3457f1c6a1819b6b7a899ef4606ed

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Faculty of Geography, Lomonosov Moscow State University, Moscow, Moscow Oblast, Russian Federation; Sergeev Institute of Environmental Geoscience RAS, Moscow, Russian Federation
ABSTRACT: The Wenchuan (Chinese Source) earthquake on 12 May 2008 induced a large number of landslides, collapses, and rockfalls along the Longmenshan (Chinese Source) fault. The landslide in Niujuan (Chinese Source) Valley (named Niujuan landslide), close to the epicenter, is one that travelled a long distance with damaging consequences. Using QuickBird satellite images and GIS tools, the seismogenic mass movements are analyzed, and the movement phases, travel path, and post-catastrophic processes of Niujuan landslide are described and discussed. Image interpretation and a GPS survey showed that the mass movements denuded 37% of the research area. The Niujuan landslide moved 1 950 m along the Lianhuaxingou (Chinese Source) stream, transformed to a debris avalanche, and accumulated in the downstream bed of Niujuan Valley, where they formed a dam 30 m in height, blocking the Niujuan stream and creating a barrier lake basin with 0.11 million m3 storage capacity. Subsequent to the Niujuan landslide, debris flows have been more active in Lianhuaxingou and Niujuan valleys because of the accumulated mass of debris. © 2010 China University of Geosciences and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: debris avalanche; debris flow; landslide; Wenchuan earthquake
INDEX KEYWORDS: debris avalanche; denudation; earthquake epicenter; GIS; landslide; QuickBird; rockfall; Sichuan earthquake 2008; China; Longmen Mountains
REFERENCES: Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
EOS Trans Agu, (2010); 
Sato, Hiroshi P., Interpretation of earthquake-induced landslides triggered by the 12 May 2008, M7.9 Wenchuan earthquake in the Beichuan area, Sichuan Province, China using satellite imagery and Google Earth, Landslides, 6, 2, pp. 153-159, (2009); 
Wang, Fawu, Preliminary investigation of some large landslides triggered by the 2008 Wenchuan earthquake, Sichuan Province, China, Landslides, 6, 1, pp. 47-54, (2009); 
Wang, Weimin, Rupture process of the MS 8.0 Wenchuan earthquake of Sichuan, China, Acta Geophysica Sinica, 51, 5, pp. 1403-1410, (2008); 
Xu, Qiang, Landslide dams triggered by the Wenchuan Earthquake, Sichuan Province, south west China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 373-386, (2009); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jiang, T.-C., Wang, X.-P.
AUTHOR FULL NAMES: Jiang, Tingchen (15128993500); Wang, Xiuping (35194835000)
15128993500; 35194835000
Deforamtion anylysis of Wenchuan earthquake based on D-InSAR with image mode
(2010), 1, art. no. 5602963, pp. 189 - 192, Cited 0 times.
DOI: 10.1109/IITA-GRS.2010.5602963
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78349302035&doi=10.1109%2FIITA-GRS.2010.5602963&partnerID=40&md5=341fac34b3eccd9fa273ad9c0d8db955

AFFILIATIONS: School of Geodesy and Geomatics Engineering, Jiangsu Ocean University, Lianyungang, Jiangsu, China
ABSTRACT: It is considerably destructive for Wenchuan earthquake. The derived deformation field is an effective way to retrieve the geophysical parameters and study the seismic mechanism. Numerous geodetic methods can be exploited for the earthquake deformation monitoring. In spite of the high accuracy and consistent temporal scale, the results of GPS measurements are discrete. Continuous deformation field can be derived from Interferometric Synthetic Aperture Radar(InSAR). For image mode(IM) has full resolution, we will use conventional InSAR to get deformation fileld of Wenchuan earthquake. First, the geolocation of Longmen Mountain areas was introduced. The process of IM interferometry was analyzed in detail. At last, the deformation field was derived with the extent of 100km×100km. The results revealed that it was not the largest deformation region at the earthquake focus. The closer you get to the fault zone, the larger deformation gradient of the heading wall it become. At the same time, IM Interferometry can not reveal deformation field because IM is too narrow to obtain the entire deformation field With the application to IM interferometry in Wenchuan earthquake, it is significant for earth science research such as earthquakes and crustal motion. © 2010 IEEE.
AUTHOR KEYWORDS: Deformation; IM; InSAR; Wenchuan earthquake
INDEX KEYWORDS: Crustal motions; D-inSAR; Deformation field; Deformation gradients; Deformation monitoring; Deformation region; Fault zone; Full resolutions; Geolocations; Geophysical parameters; IM; Image modes; InSAR; Interferometric synthetic aperture radars; Longmen Mountain; Science research; Temporal scale; Wenchuan Earthquake; Earthquakes; Geodetic satellites; Geology; Imaging systems; Interferometry; Radar imaging; Remote sensing; Synthetic aperture radar; Deformation
REFERENCES: Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Tectonophysics, (2010); 
Eos 89 Fall Meet Suppl, (2008); 
Wang, Weimin, Rupture process of the MS 8.0 Wenchuan earthquake of Sichuan, China, Acta Geophysica Sinica, 51, 5, pp. 1403-1410, (2008); 
Zhang, Junlong, Surface rupture features and segmentation of the Ms8.0 Wenchuan earthquake, Earthquake, 29, 1, pp. 149-163, (2009); 
Li, Haibing, The surface rupture zone distribution of the Wenchuan earthquake (Ms8.0) happened on May 12th, 2008, Geology in China, 35, 5, pp. 803-813, (2008); 
Zhi-Cai, L. I., Wenchuan earthquake deformation fault inversion and analysis based on GPS observations, Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 38, 2, pp. 108-119, (2009); 
Xu, Caijun, Mw 7.9 Wenchuan earthquake slip distribution inversion from GPS measurements, Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 38, 3, pp. 195-201, (2009); 
Shi, Chuang, Seismic deformation of the M w 8.0 Wenchuan earthquake from high-rate GPS observations, Advances in Space Research, 46, 2, pp. 228-235, (2010)
SPONSORS: Intelligent Inf. Technol. Appl. Res. Assoc., Asia Pacific Environmental Science Research Center, Wuhan University, Huazhong Normal University, Wuhan Institute of Technology
CONFERENCE NAME: 2010 2nd IITA Conference on Geoscience and Remote Sensing, IITA-GRS 2010
CONFERENCE DATE: 2010-08-28 through 2010-08-31
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Guo, X., Zhang, Y., Zhong, M.-J., Shen, W.-R., Wei, C.
AUTHOR FULL NAMES: Guo, Xiao (38861546400); Zhang, Yuansheng (23487593300); Zhong, Meijiao (36480742800); Shen, Wenrong (36480591000); Wei, Congxin (40662167900)
38861546400; 23487593300; 36480742800; 36480591000; 40662167900
Variation characteristics of OLR for the Wenchuan earthquake
(2010) Acta Geophysica Sinica, 53 (11), pp. 2688 - 2695, Cited 28 times.
DOI: 10.3969/j.issn.0001-5733.2010.11.016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957791513&doi=10.3969%2Fj.issn.0001-5733.2010.11.016&partnerID=40&md5=7815ecd2c849caa53a878c2d7f66337c

AFFILIATIONS: Commissariat a l'Energie Atomique et aux Energies Alternatives, Gif-sur-Yvette, France; Commissariat a l'Energie Atomique et aux Energies Alternatives, Gif-sur-Yvette, France
ABSTRACT: Based on the outgoing long-wave radiation data of geostationary satellite and their variation characteristics, this paper proposes a method for extracting earthquake thermal infrared anomaly, namely, the relative variance rate of power spectrum estimation. The proposed method is applied to analytical study of OLR for the Wenchuan earthquake and other five M<inf>s</inf> ≥ 6. 5 earthquakes in Mainland China. The results indicate that the power spectrum amplitude of OLR increased to different degrees before the great earthquakes. Characteristic period and characteristic amplitude are short and small in moist (low altitude) areas respectively, while the period and amplitude are long and big in arid (high altitude) areas respectively. The characteristics of observed thermal infrared anomalies are easy to be recognized. The method is very effective for extracting and analyzing earthquake-related information.
AUTHOR KEYWORDS: OLR; Power spectrum estimation; Relative variance rate; Wenchuan earthquake
INDEX KEYWORDS: altitude; amplitude; geostationary satellite; longwave radiation; remote sensing; satellite data; Sichuan earthquake 2008; variance analysis; China; Sichuan; Wenchuan
REFERENCES: Prog Geophys, (2008); 
Pulinets, Sergey Alexander, The physical nature of thermal anomalies observed before strong earthquakes, Physics and Chemistry of the Earth, 31, 4-9, pp. 143-153, (2006); 
Qiang, Zuji, Satellitic thermal infrared brightness temperature anomaly image-short-term and impending earthquake precursors, Science in China, Series D: Earth Sciences, 42, 3, pp. 313-324, (1999); 
Xu, Xiudeng, Preliminary inquiry into the causes of anomaly increase of air temperature by an impending earthquake, Acta Seismologica Sinica English Edition, 8, 1, pp. 149-154, (1995); 
Chinese Science Bulletin, (1993); 
Gabrielov, Andrei M., Colliding cascades model for earthquake prediction, Geophysical Journal International, 143, 2, pp. 427-437, (2000); 
Earthquake, (1998); 
Qiang, Zuji, An experimental study on temperature increasing mechanism of satellitic thermo-infrared, Acta Seismologica Sinica English Edition, 10, 2, pp. 247-252, (1997); 
Wu, Lixin, Comparison of thermal infrared radiation from discontinuous jointed faults fracturing with its acoustic emission and stress field, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 25, 6, pp. 1111-1117, (2006); 
Deng, Zhihui, Satellite infrared anomaly of several strong earthquakes in China Mainland, Dizhen Dizhi, 25, 2, pp. 327-338, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, C., Wang, T., Liu, X., Zhang, S.
AUTHOR FULL NAMES: Zhang, Chunxiao (55703944700); Wang, Tianbao (56135319300); Liu, Xiang (57192263063); Zhang, Shuo (57196103977)
55703944700; 56135319300; 57192263063; 57196103977
Cognitive model based method for earthquake damage assessment from high-resolution satellite images: A study following the WenChuan earthquake
(2010), 4, art. no. 5584290, pp. 2079 - 2083, Cited 6 times.
DOI: 10.1109/ICNC.2010.5584290
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78149375040&doi=10.1109%2FICNC.2010.5584290&partnerID=40&md5=d156fd48e66126e3f7174e97ecd36b95

AFFILIATIONS: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Beijing Oriental Ruiyun Technology Corporation, Beijing, China
ABSTRACT: Because of the availability of high-resolution satellite imagery, rapid post-earthquake damage assessment might be made over large areas, and such surveys could be of great value to rescue and post-event recovery. Urgent tasks in remote sensing require automated and robust analysis methods for image data from airborne and satellite sensor platforms. In this paper, we proposed a cognitive model based method to assessing the damage mainly from the RS data, aiming to make the understanding process to be near-real-time and the knowledge of image interpreting can be reused. The method is applied to detect the earthquake-related damage in the rural town of Xiang'e in DuJiangyan, using IKONOS and QuickBird images, acquired before and after the earthquake respectively following the WenChuan earthquake. The result of the damage inspection was compared with TTA marks obtained from field survey data, and the accuracy and usefulness of the high-resolution satellite images in damage detection were demonstrated. © 2010 IEEE.
AUTHOR KEYWORDS: Cognitive model; Earthquake damage; Fuzzy theory; Image understanding; VHR
INDEX KEYWORDS: Before and after; Cognitive model; Damage inspection; Earthquake damage; Earthquake damages; Field surveys; Fuzzy theory; High resolution satellite imagery; High resolution satellite images; Image data; Near-real time; QuickBird images; Robust analysis; Satellite sensors; VHR; Wenchuan Earthquake; Earthquakes; Fuzzy logic; Image understanding; Remote sensing; Satellite imagery; Security of data; Surveys; Damage detection
REFERENCES: Gamba, Paolo Ettore, GIS and image understanding for near-real-time earthquake damage assessment, Photogrammetric Engineering and Remote Sensing, 64, 10, pp. 987-994, (1998); 
Yamazaki, Fumio, Visual damage interpretation of buildings in Bam city using QuickBird images following the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S329-S336, (2005); 
Saito, Keiko, Visual damage assessment using high-resolution satellite images following the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S309-S318, (2005); 
Journal of Earthquake and Tsunami, (2007); 
André, Gilles, Building destruction and damage assessment after earthquake using high resolution optical sensors. The case of the Gujarat earthquake of January 26, 2001, International Geoscience and Remote Sensing Symposium (IGARSS), 4, pp. 2398-2400, (2003); 
Proceedings of the 3rd International Workshop on Remote Sensing for Disaster Response, (2005); 
Extraction of Damaged Buildings Using High Resolution Satellite Images in the 2006 Central Java Earthquake, (2006); 
Rathje, Ellen M., Damage patterns from satellite images of the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S295-S307, (2005); 
Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
Saito, Keiko, Using High-Resolution Satellite Images for Post-Earthquake Building Damage Assessment: A Study Following the 26 January 2001 Gujarat Earthquake, Earthquake Spectra, 20, 1, pp. 145-169, (2004)
SPONSORS: Yantai University
CONFERENCE NAME: 2010 6th International Conference on Natural Computation, ICNC'10
CONFERENCE DATE: 2010-08-10 through 2010-08-12
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhang, X.-F., He, Z.-W., Xue, D.
AUTHOR FULL NAMES: Zhang, Xuefeng (37007238900); He, Zhengwei (7403885268); Xue, Dongjian (36816510500)
37007238900; 7403885268; 36816510500
RS-Based geological features investigation and stability analyses in wenjiaba landslide
(2010) Wutan Huatan Jisuan Jishu, 32 (6), pp. 674 - 676, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650005944&partnerID=40&md5=46e06eff4e4998efc51b97d577a854f9

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu, Sichuan, China; College of Geosciences, Chengdu University of Technology, Chengdu, China; Key Lab of Resource Environment, Capital Normal University, Beijing, Beijing, China
ABSTRACT: The Wenjiaba landslide of Pingwu County was triggered by Wenchuan earthquake, and when it occurred it has blocked the river and formed a barrier lake which brought the risky for Nanba town and a manganese factory at downstream. So it is necessary to investigate the geological features and to analysis the stability of the landslide. By interpreting a postearthquake SPOT image of Pingwu County, the geological features , such as the geomorphic factors, the material composition, the vegetation coverage and the hydrological condition were identified. On the base of that, Wenjiaba landslide was considered as a large retrogressive landslide and was still not stable at present, it may be re-slide on a certain condition. Some prevention suggestions for potential risks was proposed in the final.
AUTHOR KEYWORDS: Geological features; Landslide; RS; Stability; Wenjiaba landslide
INDEX KEYWORDS: landslide; remote sensing; satellite imagery; Sichuan earthquake 2008; site investigation; SPOT; stability analysis; China; Pingwu; Sichuan
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qi, S., Xu, Q., Lan, H., Zhang, B., Liu, J.
AUTHOR FULL NAMES: Qi, Shengwen (55411952900); Xu, Qiang (56506033600); Lan, Hengxing (7102710925); Zhang, Bing (8835983800); Liu, Jianyou (23393070000)
55411952900; 56506033600; 7102710925; 8835983800; 23393070000
Spatial distribution analysis of landslides triggered by 2008.5.12 Wenchuan Earthquake, China
(2010) Engineering Geology, 116 (1-2), pp. 95 - 108, Cited 335 times.
DOI: 10.1016/j.enggeo.2010.07.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957800156&doi=10.1016%2Fj.enggeo.2010.07.011&partnerID=40&md5=adaf924af28160d8e16d1345fff076ec

AFFILIATIONS: Key Laboratory of Engineering Geomechanics, Chinese Academy of Sciences, Beijing, Beijing, China; State Key Laboratory of Geohazard Prevention and Geoenviroment Protection, Chengdu University of Technology, Chengdu, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The 2008.5.12 Wenchuan Earthquake (seismic magnitude M<inf>w</inf> 7.9 according to the USGS) triggered a great number of landslides. A spatial database of landslides is built by interpreting the remote sensing (RS) data which covers 11 counties severely damaged by the earthquake with area of about 31,686.12km2. The geological settings of the study area are detailed mapped including geologic structure and lithology. The digital elevation model (DEM) of the study area with resolution of 30m×30m is presented to address the topographic characteristics. Correlations between the occurrence of landslides with geological settings i.e. active faults (the coseismic surface ruptures), geological unit, slope gradient, slope elevation as well as slope aspect are analyzed using spatial modeling in GIS with the aids of field investigations. It can be concluded that the distance to the causative faults and slope gradient are much more important than other factors. Landslides are clustered distributed along the causative faults of F2 and F3, and landslides incidence are dramatically decreasing with the increasing of the distance to the causative faults. The landslides incidence has an obvious increase near the active faults i.e. F1. Landslide concentration (LC, landslides/km2) has an obvious exponent increase with slope gradient. However, LC has no obvious relationship with geological unit and slope elevation; the difference of LC value in each geological unit (each slope elevation category) maybe have been the result affected by slope gradient for each geological unit (each slope elevation category) and distance of each geological unit (each slope elevation category) to causative fault zone. Isoseismal map reflects the incidence of landslides in some degree, and LC increases dramatically with Intensity increasing, almost all landslides occurred in the region above VI degree. Statistics result also indicates that in the near field of causative faults, landslides tend to have the initial sliding direction similar to the movement of the causative faults. And preliminary study shows that landslides incidence varies in different slopes with different structure, and consequent slopes and obsequent slopes have a higher landslides incidence than other layered slopes. © 2010 Elsevier B.V.
AUTHOR KEYWORDS: 2008.5.12 Wenchuan Earthquake; Landslide; Slope; Spatial analysis
INDEX KEYWORDS: Active fault; Coseismic surface rupture; Different slopes; Different structure; Digital elevation model; Fault zone; Field investigation; Geologic structures; Geological setting; Geological units; Layered slope; Near fields; Remote sensing data; Sliding direction; Slope; Slope aspect; Slope gradients; Spatial analysis; Spatial database; Spatial distribution analysis; Spatial modeling; Study areas; Wenchuan Earthquake; Earthquakes; Lithology; Remote sensing; Surveying; Landslides; digital elevation model; earthquake trigger; GIS; isoseismal map; landslide; remote sensing; Sichuan earthquake 2008; slope dynamics; slope failure; spatial analysis; spatial distribution; China
REFERENCES: Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Earth Science Frontiers, (2008); 
Ioseismal Map of the Wenchuan Earthquake, (2010); 
undefined, (2001); 
Copley, Alex C., Models of crustal flow in the India-Asia collision zone, Geophysical Journal International, 169, 2, pp. 683-698, (2007); 
Cruden, David M., A simple definition of a landslide, Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur, 43, 1, pp. 27-29, (1991); 
Atlas of Seismological and Geological Disasters Associated with the 12 May 2008 Ms 8 0 Wenchuan Great Earthquake Sichuan China, (2009); 
Geological Topology of Sichuan Province, (1991); 
Houseman, Gregory A., Crustal thickening versus lateral expulsion in the Indian-Asian continental collision, Journal of Geophysical Research, 98, B7, pp. 12-249, (1993)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, J., Yang, P., Zhou, C., Wei, C., Zhang, L., Zhang, B., Li, G.
AUTHOR FULL NAMES: Zhang, Jun (57221660168); Yang, Panxin (16641530300); Zhou, Chenghu (7403347013); Wei, Chengjie (7401658054); Zhang, Ling (57168861400); Zhang, Ben'gang (15072325800); Li, Guoqiang (57211596439)
57221660168; 16641530300; 7403347013; 7401658054; 57168861400; 15072325800; 57211596439
Impact on the distribution of medicinal plant habitat by Wenchuan earthquake
(2010), art. no. 5567869, Cited 0 times.
DOI: 10.1109/GEOINFORMATICS.2010.5567869
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958074966&doi=10.1109%2FGEOINFORMATICS.2010.5567869&partnerID=40&md5=411f1fb0127df30a219637b3475379da

AFFILIATIONS: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Microbiology Chinese Academy of Sciences, Beijing, China
ABSTRACT: Longmen Shan tectonic belt located in West Sichuan Plateau, which keeps the good forests outlook and provides a unique natural environment for the growth of medicinal plants because of its unique geological features. It is a area that is one of the most abundant biological diversity in China and the whole world range, and also is the one of the most concentrated area of the origin of Chinese herbal medicines in Sichuan Province and China. Wenchuan Earthquake induced thousands of landslides, debris flows, which made a huge impact on the medicinal plant habitat by means of severe fragmentation. In this paper, through evaluating and integrating the multi-period remote sensing image data and basic geographic information data of the Longmen Shan region after earthquake by grid technology, the image group that covers the whole Longmen Shan belt and reflects the different features of ground object is acquired. Characters of Wenchuan earthquake disaster distributing is interpreted and analyzed by geographic information system platform for spatial analysis with the image group. Combine with the life habits of medicinal plants in this area and the main ecological factors impacting the spatial distribution pattern of medicinal plants, the impact on distribution pattern of medicinal plants habits during the disaster discussed, as a result, medicinal plants habitat influenced in the shock in various environmental factors is concluded. It can provide the academic evidence for medicinal plant restoration in earthquake zone.
AUTHOR KEYWORDS: Distribution; Geographic information system; Medicinal plant habitat; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Biological diversity; Chinese herbal medicines; Debris flows; Distribution; Distribution patterns; Earthquake zones; Ecological factors; Environmental factors; Geographic information; Geological features; Grid technologies; Ground objects; Medicinal plants; Multi-period; Natural environments; Remote sensing images; Sichuan province; Spatial analysis; Spatial distribution patterns; Tectonic belts; Wenchuan Earthquake; West Sichuan; Debris; Earthquakes; Ecosystems; Geographic information systems; Image reconstruction; Information systems; Medicine; Remote sensing; Technology transfer; Plants (botany)
REFERENCES: Sediment Geol Tethyan Geol, (2005); 
Zhou, Rongjun, Active tectonics of the eastern margin of the Tibet Plateau, Kuangwu Yanshi, 26, 2, pp. 40-51, (2006); 
Int Geol Rev, (1995); 
Scihuan Vegetation, (1988); 
Vegetation of China, (1980); 
China Chinese Medicine Resources, (1995); 
Regionalization of Medicinal Plant in China, (1995); 
Landscape Ecology Pattern Process Scale and Hierarchy, (2000); 
Davies, Kendi F., Effects of habitat fragmentation on carabid beetles: Experimental evidence, Journal of Animal Ecology, 67, 3, pp. 460-471, (1998); 
Fahrig, Lenore, Effects of Habitat Fragmentation on Biodiversity, Annual Review of Ecology, Evolution, and Systematics, 34, pp. 487-515, (2003)
SPONSORS: IEEE GRSS, The Geographical Society of China
CONFERENCE NAME: 2010 18th International Conference on Geoinformatics, Geoinformatics 2010
CONFERENCE DATE: 2010-06-18 through 2010-06-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Duan, F., Huili, H., Zhao, W.
AUTHOR FULL NAMES: Duan, Fuzhou (14031404800); Huili, Gong (35240287700); Zhao, Wenji (12787367300)
14031404800; 35240287700; 12787367300
Collapsed houses automatic identification based on texture changes of post-earthquake aerial remote sensing image
(2010), art. no. 5567622, Cited 11 times.
DOI: 10.1109/GEOINFORMATICS.2010.5567622
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958049408&doi=10.1109%2FGEOINFORMATICS.2010.5567622&partnerID=40&md5=110c0dafba4afb3b8db41ff6ab24685d

AFFILIATIONS: College of Resource Environment and Tourism, Capital Normal University, Beijing, Beijing, China; Key Lab. of 3D Information Acquisition and Application MOE, Beijing, China
ABSTRACT: Collapsed houses in city are one of the most important destructions after earthquake. The area, amount and rate of collapsed houses are the most essential data sources to decide how to reconstruct in the disaster area after earthquake. It is often difficult to access high-resolution remote sensing satellite images in time only with satellite sensors in the area. For example, after the Wenchuan earthquake on May 12 2008, high-resolution satellite remote sensing images had not been acquired after a few days in which all actions have to be taken for disaster mitigation and relief. With various aviation flight platforms, the aerial remote sensing images are obtained in time at a relatively short period of time with better weather in the earthquake zones. So how to rapidly identify and detect the damage building is the most important problem. In this paper, through the texture changes of aerial remote sensing images, the method of housing collapsed automatically determination is expounded. The approach for detecting the damaged buildings after earthquake is different to visual identification of the post-event aerial images. The approach utilizes the texture difference between the buildings and the collapsed buildings. It is based on an idea that if a building collapsed, it will produce more complex texture. After we calculate the texture complexity parameter, the building may has collapsed if the texture complexity parameter is beyond threshold. After Wenchuan earthquake, the aerial remote sensing images are testified by this way in Beichuan, Wenchuan and Anxian. The rate of houses collapsed and the ratio of the edge of texture are strongly correlated. If the rate is beyond 0.15, the house will collapse over eighty percent, and if the rate is under 0.10, the percentage drops. Therefore, through the ratio of the edge of pixels and the number of regional architecture of the region pixels, to estimate the rate of the houses collapsed is feasible and effective.
AUTHOR KEYWORDS: House collasped; Image classification; Object oriented
INDEX KEYWORDS: Aerial images; Automatic identification; Collapsed buildings; Data source; Disaster areas; Disaster mitigation; Earthquake zones; Flight platforms; High resolution; High resolution remote sensing; Object oriented; Remote sensing images; Satellite remote sensing; Satellite sensors; Short periods; Texture complexity; Visual identification; Wenchuan Earthquake; Automation; Buildings; Earthquakes; Electronic data interchange; Identification (control systems); Image analysis; Image classification; Image reconstruction; Pixels; Remote sensing; Satellites; Textures; Houses
REFERENCES: Turker, Mustafa, Building-based damage detection due to earthquake using the watershed segmentation of the post-event aerial images, International Journal of Remote Sensing, 29, 11, pp. 3073-3089, (2008); 
Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
Turker, Mustafa, SPOT HRV data analysis for detecting earthquake-induced changes in Izmit, Turkey, International Journal of Remote Sensing, 24, 12, pp. 2439-2450, (2003); 
Turker, Mustafa, Detection of collapsed buildings caused by the 1999 Izmit, Turkey earthquake through digital analysis of post-event aerial photographs, International Journal of Remote Sensing, 25, 21, pp. 4701-4714, (2004); 
Gamba, Paolo Ettore, GIS and image understanding for near-real-time earthquake damage assessment, Photogrammetric Engineering and Remote Sensing, 64, 10, pp. 987-994, (1998); 
Ganas, Athanassios, The 7 September 1999 Athens 5.9 Ms earthquake: Remote sensing and digital elevation model inputs towards identifying the seismic fault, International Journal of Remote Sensing, 22, 1, pp. 191-196, (2001); 
Saraf, Arun Kumar, Cover: IRS-1C-PAN depicts Chamoli earthquake induced landslides in Garhwal Himalayas, India, International Journal of Remote Sensing, 21, 12, pp. 2345-2352, (2000); 
Su, Wei, Textural and local spatial statistics for the object-oriented classification of urban areas using high resolution imagery, International Journal of Remote Sensing, 29, 11, pp. 3105-3117, (2008); 
Proceedings of the First International Airborne Remote Sensing Conference and Exhibition, (1994); 
Conners, Richard W., Segmentation of a high-resolution urban scene using texture operators ( Sunnyvale, California)., Computer Vision, Graphics, and Image Processing, 25, 3, pp. 273-310, (1984)
SPONSORS: IEEE GRSS, The Geographical Society of China
CONFERENCE NAME: 2010 18th International Conference on Geoinformatics, Geoinformatics 2010
CONFERENCE DATE: 2010-06-18 through 2010-06-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Proceedings - 3rd International Conference on Information Sciences and Interaction Sciences, ICIS 2010
(2010), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957598012&partnerID=40&md5=072c4d1a2378f460985dfb181c00c658

ABSTRACT: The proceedings contain 139 papers. The topics discussed include: applying dual digital watermarking technology in digital rights management; study on GIS architecture based on SOA and RIA; a new hybrid approach for multiprocessor system scheduling with genetic algorithm and Tabu search (HGTS); a kind of magnetic gear with high speed ratio; a kind of calligraphy robot; Fuzzy PID controller design using synchronous bacterial foraging optimization; information security investment decision by fuzzy economics; evaluation of Wenchuan earthquake management plan and its effects; a fast disasters assessment algorithm with Fuzzy, incomplete and noisy information; FMCDM: a fuzzy multi-criteria decision-making hybrid approach to evaluate the damage level of typhoon; a heterogeneous information integration framework for emergency management; and a survey of mobile database security threats and solutions for it.
SPONSORS: Int. Assoc. Inf., Cult., Hum. Ind. Technol. (AICIT), Inst. Electr. Electron. Eng., Inc., Inst. Electr. Electron. Eng.(IEEE), Chengdu Sect., University of Electronic Science and Technology of China (UESTC), Bus. Intell. Counc., Chin. Soc. Manage. Mod.
CONFERENCE NAME: 3rd International Conference on Information Sciences and Interaction Sciences, ICIS 2010
CONFERENCE DATE: 2010-06-23 through 2010-06-25
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Zeng, T., Yang, W.-N., Li, X.-D., Liu, H.-H., Peng, L., Ji, J.
AUTHOR FULL NAMES: Zeng, Tao (58587229300); Yang, Wunian (7407756597); Li, Xiaodong (36598707900); Liu, Hanhu (9240308700); Peng, Li (35206100100); Ji, Jian (12780581700)
58587229300; 7407756597; 36598707900; 9240308700; 35206100100; 12780581700
Information extraction of object-oriented high resolution remote sensing image: A Case Study on urban damaged buildings in Wenchuan earthquake
(2010) Journal of Natural Disasters, 19 (5), pp. 81 - 87, Cited 6 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952398173&partnerID=40&md5=4245eb20b3c1a8832bdfd00d203e5f60

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: With the rapid development of remote sensing technology, especially more and more launches and applications of high resolution satellite, the technology plays an important role in identification of buildings, investigation and pre-evaluation of earthuake disaster. However, the traditional pixel-oriented approaches show a lot of limitations on classification of high resolution satellite images, and they can not take full advantages of image information. According to the characteristics of high-resolution remote sensing images, this paper presents a new object-oriented scheme of damaged building information extraction from high-resolution remote sensing image. The scheme has two steps. The first step is segmenting the whole imagery into image objects which do not intersect mutually. The second step is extracting damaged buildings and undamaged ones with the features used to classify, like spectrumx texture, shape and context. The experimental results indicate that the new object-oriented information extraction technique has high accuracy compared to the traditional classification methods and has a great application potential.
AUTHOR KEYWORDS: High resolution image; Image segmentation; Information extraction; Object-oriented; Seismic building damage
INDEX KEYWORDS: accuracy assessment; building; disaster management; earthquake damage; image classification; image resolution; remote sensing; satellite imagery; seismic response; Sichuan earthquake 2008; urban area
REFERENCES: undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qin, J., Cao, Y., Geng, J.
AUTHOR FULL NAMES: Qin, Jun (7402896317); Cao, Yungang (18435828100); Geng, Juan (36672793200)
7402896317; 18435828100; 36672793200
Evaluation model for damage extent of roads in Wenchuan earthquake-stricken areas based on remote sensing information
(2010) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 45 (5), pp. 768 - 774, Cited 6 times.
DOI: 10.3969/j.issn.0258-2724.2010.05.019
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649472309&doi=10.3969%2Fj.issn.0258-2724.2010.05.019&partnerID=40&md5=b5602cf5c1c9c0692dd03c458be1da32

AFFILIATIONS: School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
ABSTRACT: A low-altitude remote sensing data-based evaluation model for damage extent of roads was proposed for rapid assessment of transport facilities in Wenchuan earthquake-stricken areas. Spatial information about roads, bridges, tunnel portals and spatial distributional information about landslides, collapses and barrier lakes were extracted from large-scale true-color images of Wenchuan earthquake-stricken areas gained from low-altitude remote sensing platforms, and the corresponding thematic maps were drawn. Spatial coupling of a road and disaster bodies was taken as the criterion to judge whether this road is damaged. The road damage coefficient was get from the damage level of road structures due to individual disaster body, and the damage scale factor was obtained from the length of individual damaged road. Based on the above parameters, an evaluation model was established for the damage extent of roads in Wenchuan earthquake-stricken areas. The damage extent of Baisha-Xiajiaping section of Dujiangyan-Wenchuan highway was obtained using this evaluation model. The obtained result is consistent with the actual situation.
AUTHOR KEYWORDS: Damage of road; Evaluation model; Low-altitude remote sensing; Remote sensing information; Wenchuan earthquake
INDEX KEYWORDS: Damage of road; Evaluation models; Low-altitude; Remote sensing information; Wenchuan Earthquake; Damage detection; Earthquakes; Image processing; Maps; Remote sensing; Roads and streets
REFERENCES: Gao, Bo, Lessons learnt from damage of highway tunnels in Wenchuan earthquake, Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 44, 3, pp. 336-374, (2009); 
Acta Geodaetica Et Cartographica Sinica, (2001); 
Geomatics and Information Science of Wuhan University, (2003); 
Emergency and Rescue Recent Developments in World Seismology, (2005); 
Journal of Remote Sensing, (2008); 
Journal of Natural Disasters, (1998); 
Wang, Xiaoqing, Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 174-181, (2009); 
Han, Yongshun, Remote sensing monitoring and assessment of traffical damage by Wenchuan earthquake - A case study in Du-Wen Highway, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 273-283, (2009); 
Journal of Catastrophology, (1997); 
Journal of Image and Graphics, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Han, Y.-S., Liang, C., Cui, P., Han, J., Xue, J., Zhang, Y.-X.
AUTHOR FULL NAMES: Han, Yongshun (8045872900); Liang, Chuan (9940840700); Cui, Peng (56706923500); Han, Jun (55656662100); Xue, Jiao (36665586900); Zhang, Yongxiang (35212327600)
8045872900; 9940840700; 56706923500; 55656662100; 36665586900; 35212327600
Susceptibility of mountain hazards triggered by Wenchuan Earthquake to topographic factors
(2010) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42 (SUPPL. 1), pp. 15 - 21, Cited 7 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649269974&partnerID=40&md5=af5a08f46a21a7f4f6aacc16627c7fd0

AFFILIATIONS: School of Water Conservancy and Hydroelectric Power, Sichuan University, Chengdu, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, Hunan, China
ABSTRACT: Taking the Minjiang River valley within Wenchuan County as a pilot site, the impact of geographic environment and topographic conditions on mountain hazards was discussed and the types, development and distribution of secondary mountain hazards in pilot site were explained. Based on the contribution of each topographic factor to mountain hazards development, the certainty factor of mountain hazards was introduced so as to quantitatively analyze the susceptibility of secondary mountain hazards to three major topographic factors including altitude, slope and aspect. A case study with the technologies of geographical information system(GIS) and remote sensing(RS) was given and the most favorable topographic factors to secondary mountain hazards were probed. The results demonstrated that secondary mountain hazards induced by Wenchuan Earthquake scatter widely in pilot site with various types, concentrated distribution, large scale and serious damage and are under the control of topographic conditions. The altitude between 1 000 m and 1 600 m is favorable to secondary mountain hazard development and the altitude above 1 600 m is unfavorable to mountain hazard development with the altitude increasing but the hazard development decreasing. The mid and steep slopes above 35° are sensitive to secondary mountain hazards, while the more the slope degree is and the more probable the mountain hazard occurrence is. The susceptive aspects to secondary mountain hazards are southeast, east, south and northeast in turn and their corresponding certainty factors are 0.169, 0.144, 0.133, and 0.023, respectively. The susceptibility of mountain hazards to topographic factors can be quantitatively calculated by means of GIS and statistic analysis methods. The assessment method was essential for managing risks and developing mitigation efforts related to secondary mountain hazards.
AUTHOR KEYWORDS: Certainty factor; Minjiang river valley; Secondary mountain hazards; Topographic factors
INDEX KEYWORDS: Assessment methods; Certainty factors; Geographical information systems; Minjiang River; Minjiang river valley; Mountain hazard; Statistic analysis; Steep slope; Topographic conditions; Topographic factors; Wenchuan Earthquake; Earthquakes; Geographic information systems; Hazards; Remote sensing; Risk management; Rivers; Landforms
REFERENCES: Han, Yongshun, Remote sensing monitoring and assessment of traffical damage by Wenchuan earthquake - A case study in Du-Wen Highway, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 273-283, (2009); 
Journal of Engineering Geology, (2009); 
Liu, Chuanzheng, Disasters induced by the Wenchuan earthquakes, Sichuan, China, and geo-environmental safety, Geological Bulletin of China, 27, 11, pp. 1907-1912, (2008); 
Reasearch on Theory and Key Technologies of Debris Flow Risk Management D, (2008); 
Chinese Journal of Rock Mechanics and Engineering, (2002); 
Shortliffe, Edward H., A model of inexact reasoning in medicine, Mathematical Biosciences, 23, 3-4, pp. 351-379, (1975); 
Heckerman, David E., Probabilistic interpretations for mycin's certainty factors, Machine Intelligence and Pattern Recognition, 4, C, pp. 167-196, (1986)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, Q., Li, W.-L.
AUTHOR FULL NAMES: Xu, Qiang (56506033600); Li, Weile (25936551300)
56506033600; 25936551300
Study on the direction effects of landslides triggered by Wenchuan Earthquake
(2010) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42 (SUPPL. 1), pp. 7 - 14, Cited 35 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649232409&partnerID=40&md5=8b4a60f3fd43b6ce4f6960c2d8d6ddc5

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: According to the field investigation, it was founded that in some special areas, the sliding direction of landslides presented a few unusual features related to the earthquake dynamics. Through the detailed remote-sensing interpretation of the study area, the landslide density in slopes of different direction was calculated and the relationship between the sliding direction of large-scale landslides and seismic fault was analyzed, and two features of Wenchuan Earthquake-triggered landslides were obtained, including back-slope and fault diastrophism direction effects. These two effects indicated that when analyzing the genetic mechanism of landslides triggered by strong earthquake, more attention should be given to the following two factors, one being the initial driving force produced by the abrupt diastrophism of seismic fault to slope instability and the other being the refraction and reflection of seismic wave in the slope body and the change of its internal stress thus incurred.
AUTHOR KEYWORDS: Back slope effects; Directional effects; Fault dislocation effects; Landslides; Wenchuan Earthquake
INDEX KEYWORDS: Back slope effects; Directional effects; Driving forces; Earthquake dynamics; Fault dislocation; Field investigation; Genetic mechanism; Internal stress; Large-scale landslides; Seismic faults; Sliding direction; Slope instability; Study areas; Wenchuan Earthquake; Earthquakes; Remote sensing; Seismic waves; Landslides
REFERENCES: Keefer, David K., Regional distribution and characteristics of landslides generated by the earthquake, US Geological Survey Professional Paper, 1551-C, pp. 7-32, (1998); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000); 
Landslides, (2002); 
Chigira, Masahiro, Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan, Engineering Geology, 82, 4, pp. 202-221, (2006); 
Owen, Lewis A., Landslides triggered by the 8 October 2005 Kashmir earthquake, Geomorphology, 94, 1-2, pp. 1-9, (2008); 
Kamp, Ulrich, GIS-based landslide susceptibility mapping for the 2005 Kashmir earthquake region, Geomorphology, 101, 4, pp. 631-642, (2008); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhuang, J., Cui, P., Ge, Y., Zhu, Y., Liu, Y., Pei, L.
AUTHOR FULL NAMES: Zhuang, Jianqi (26538426500); Cui, Peng (56706923500); Ge, Yonggang (26039083000); Zhu, Yingyan (10143158600); Liu, Yinghui (36647679000); Pei, Laizheng (26656035900)
26538426500; 56706923500; 26039083000; 10143158600; 36647679000; 26656035900
Risk assessment of collapses and landslides caused by 5.12wenchuan earthquake-a case study of Dujiangyan-Wenchuan highway
(2010) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 29 (SUPPL. 2), pp. 3735 - 3742, Cited 21 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78149490079&partnerID=40&md5=d5d48579a9de99fa2eb7866b5ca9e9bc

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu, China
ABSTRACT: Dujiangyan-Wenchuan highway, the serious quake-hit area, was selected as the investigative object to assess the risks of collapses and landslides caused by "5 · 12" Wenchuan earthquake along the highway, and the sensitivities of collapses and landslides to their impact factors were analyzed by the method of information acquisition analysis. Then, based on remote sense image interpretation and field investigation data, the risks of these geo-hazards were assessed by GIS. The results show that collapses and landslides easily occurr under the following natural conditions: (1) slope gradient: > 35°; (2) slope aspect: east, southeast and south; (3) surface roughness: > 1.15; (4) the distance to the main fault: 5-20 km; (5) land use type: forest, woodland and shrub forest; (6) stratum and lithology: proterozoic diorite, plagiogranite, basalt and andesite, carboniferous limestone and marl and Silurian gray green phyllite and limestone, especially the proterozoic basalt and andesite. The hazard assessment results were given in terms of overlaying the information value of each factor, and then the assessment results were divided into five grades: high intense risk zone, higher risk zone, moderate zone, light risk zone and no risk zone. It is found that the moderate, higher and high intense risk zones account for 70.34% of the study area, the high intense risk zone accounts for 19.15%, and no risk zone only accounts for 11.81%. The high intense and higher risk zones mainly distribute in the areas from Yingxiu to Caopo River and the light risk zone and below light risk zones mostly locate in the section of Caopo River-Wenchuan. The presented results provide a scientific basis for the prevention, elusion and mitigation of geo-hazards and support the recovery and reconstruction of Dujiangyan-Wenchuan highway.
AUTHOR KEYWORDS: "5 · 12" Wenchuan earthquake; Collapses and landslides; Dujiangyan-Wenchuan highway; Information acquisition analysis; Risk assessme; Slope engineering
INDEX KEYWORDS: Collapses and landslides; Dujiangyan-Wenchuan highway; Information acquisitions; Slope engineering; Wenchuan Earthquake; Basalt; Earthquakes; Hazards; Igneous rocks; Landslides; Limestone; Lithology; Remote sensing; Risk analysis; Slope protection; Surface roughness; Risk assessment
REFERENCES: Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Ji, Suiwang, Analysis of typical seismic damages of highways in Wenchuan earthquake-induced hazard areas in Sichuan Province, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28, 6, pp. 1250-1260, (2009); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Chen, Xiaoli, Fuzzy comprehensive study on seismic landslide hazard based on GIS, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 44, 3, pp. 434-438, (2008); 
Wang, Y. Q., Study on comprehensive index method for predicting earthquake-induced landslides, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 23, 3, (2001); 
Journal of Seismological Research, (2001); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Dunning, Stuart A., The Hattian Bala rock avalanche and associated landslides triggered by the Kashmir Earthquake of 8 October 2005, Engineering Geology, 93, 3-4, pp. 130-144, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, S.-J., Kong, J.-M., Fayou, F.-Y., Cui, Y.
AUTHOR FULL NAMES: Tian, Shujun (36609420200); Kong, Jiming (55793897000); Fayou, A. (36607707800); Cui, Yun (57188824346)
36609420200; 55793897000; 36607707800; 57188824346
Responsive mechanism between earthquake-induced landslides and environment in Wenchuan earthquake
(2010) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42 (5), pp. 92 - 98, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958481552&partnerID=40&md5=02818d32a3e5568b7319b875057be23e

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: For revealing the relationship between the distribution of landslides and environmental factors, 4722 earthquake-induced landslides were studied with field investigation and the interpretation of remote-sensing images. GIS technique was used to finish the statistical data including distance from middle faults, lithology, altitude, river, slope and aspect of slope. The results about the responsive mechanism between the distribution of landslides and environmental factors were summarized as follows. The zonal distribution of landslides was consistent with the strike of middle faults and the seismic energy was released along the middle faults which caused the attenuation of energy obvious in minor axis and about 64.42% of landslides were distributed within 20 km from middle faults. The density in hanging-wall of middle faults was obviously higher than that in footwall which underwent the variation of reduce-increase-reduce because of the break of middle and front thrusting faults. The release of seismic energy was restricted by landform and river. The high density of landslides was in high altitude, steep slope, intense incision. The concentrated distribution of landslides was in river banks and the origin of landslides was in upside of slope because of the magnified effect for earthquake. About 99.43% of landslides were distributed in area where the seismic intensity was more than VII and the highest density of landslides were in soft rocks because of the earthquake site coefficients. The high density occurred in the intersection direction of the gradient topography and the faults breaking and landslides with large scale appeared in the union direction, which was convenient for seismic energy transmitting.
AUTHOR KEYWORDS: Amplification factor; Earthquake-induced landslide; GIS analysis; Site coefficient; Wenchuan Earthquake
INDEX KEYWORDS: Amplification factors; Earthquake-induced landslide; GIS analysis; Site coefficient; Wenchuan Earthquake; Amplification; Earthquakes; Lithology; Remote sensing; Rivers; Landslides
REFERENCES: Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Romeo, Roberto Walter, Seismically induced landslide displacements: A predictive model, Engineering Geology, 58, 3-4, pp. 337-351, (2000); 
Papadopoulos, Gerassimos A., Magnitude-distance relations for earthquake-induced landslides in Greece, Engineering Geology, 58, 3-4, pp. 377-386, (2000); 
Huang, Runqiu, Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27, 12, pp. 2585-2592, (2008); 
Journal of Engineering Geology, (2010); 
Tian, Shujun, Research on responsive mechanism between earthquake-induced mountain hazards and environmental background in typical region of Wenchuan Earthquake: A case study of Mianzhu County, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 209-215, (2009); 
Science and Technology Review, (2008); 
Yong, Li, Surface rupture, thrusting and strike-slipping in the Wenchuan earthquake of Sichuan, China, Journal of Chengdu University of Technology (Science and Technology Edition), 35, 4, pp. 404-413, (2008); 
Seed, Harry Bolton, Mexico earthquake of September 19, 1985 - relationships between soil conditions and earthquake ground motions, Earthquake Spectra, 4, 4, pp. 687-729, (1988); 
Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xiang, L.-Z., Cui, P., Zhang, J.-Q., Huang, D.-C., Fang, H., Zhou, X.-J.
AUTHOR FULL NAMES: Xiang, Lingzhi (36195988600); Cui, Peng (56706923500); Zhang, Jianqiang (35212366900); Huang, Duocheng (36618912200); Fang, Hua (56391373800); Zhou, Xiaojun (57198476576)
36195988600; 56706923500; 35212366900; 36618912200; 56391373800; 57198476576
Triggering factors susceptibility of earthquake-induced collapses and landslides in Wenchuan County
(2010) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42 (5), pp. 105 - 112, Cited 17 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958457234&partnerID=40&md5=1c65417f3cffa68a3bae776ff82f6aa3

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Anhui Inst. of Geo-Environment Monitoring, Bengbu, China
ABSTRACT: The remote sensing image and survey results after the earthquake showed that, the Wenchuan Ms8.0 Earthquake had induced more than 5 528 collapses and landslides in the Wenchuan County with the area of about 4083 km2. Based on GIS, the statistical relationships between the collapses and landslides distribution and the factors, such as the lithology, distance to faults, slope gradient, elevation and others, were analyzed. Susceptibility of triggering factors of Wenchuan Earthquake was analyzed by the means of slope certainty factors (CF). The most numerical intervals of each factor which are inclined to hazards were determined. The results showed that the hazards mainly distributed in the stratum of Proterozoic, Sinian and Permian with hard rock, in the slope of more than 40 degree, within a 10 km buffer zone to the active faults and 6 km to the no active faults. The collapses and landslides distributed mainly in the area with the elevation 1000~2500 m and relative height between 600~1000 m. The mainstream of the Min River absolutely controlled the hazard distribution. The conclusions indicated that the factors have the effect of seismic wave propagation in media and distance effect. There is significant different numerical interval which inclined to collapses and landslides in lithology and slope between induced by earthquake and by rainfall.
AUTHOR KEYWORDS: Certainty factor (CF); Collapse and landslide; Susceptibility analysis; Wenchuan Earthquake
INDEX KEYWORDS: Active fault; Buffer zones; Certainty factors; Collapse and landslide; Distance effects; Hard rocks; Permian; Proterozoic; Relative heights; Remote sensing images; Slope gradients; Statistical relationship; Susceptibility analysis; Triggering factors; Wenchuan Earthquake; Image reconstruction; Landslides; Lithology; Remote sensing; Seismic waves; Surveys; Wave propagation; Earthquakes
REFERENCES: Prestininzi, Alberto, Earthquake-induced ground failures in Italy, Engineering Geology, 58, 3-4, pp. 387-397, (2000); 
Papadopoulos, Gerassimos A., Magnitude-distance relations for earthquake-induced landslides in Greece, Engineering Geology, 58, 3-4, pp. 377-386, (2000); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Shortliffe, Edward H., A model of inexact reasoning in medicine, Mathematical Biosciences, 23, 3-4, pp. 351-379, (1975); 
Uncertainty in Artificial Intelligence, (1986); 
Chinese Journal of Rock Mechanics and Engineering, (2002); 
Zhou, Cuiying, Spatial probability analysis of landslides based on GIS technology, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 23, 6, pp. 911-914, (2004); 
Chen, Xiaoli, Triggering factors susceptibility of earthquake-induced landslides in 1976 Longling Earthquake, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 45, 1, pp. 104-109, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, X.-Z., You, Y., Liu, J.-F.
AUTHOR FULL NAMES: Chen, Xingzhang (25623240400); You, Yong (35811595800); Liu, Jinfeng (59454532200)
25623240400; 35811595800; 59454532200
Impacts on reconstruction and developing degrees evaluation of debris flows following the Wenchuan earthquake in Beichuan County, Sichuan, China
(2010) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 42 (5), pp. 76 - 82, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958451191&partnerID=40&md5=cf8cebda63b25d764ce26310504f7995

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The debris flow hazards followed the Wenchuan earthquake have been the key restricting factor to the restoration and reconstruction in Beichuan County. The developing degrees evaluation of debris flow is of great significance to the reconstruction. Using ArcGIS technology and multi-factor superposition method, the developing degrees of debris flows in Beichuan County followed the Earthquake was evaluated based on the field survey and remote sensing interpretation. Landslides density, formation lithology, seismic intensity, slope gradient, surface roughness, and average annual precipitation were selected as evaluation factors and each of them was subdivided into five grades. Analytic Hierarchy Process (AHP) was used to determine the weights of factors and quantify each grade. On that basis, multi-factor weighted superposition evaluation model was constructed and used to evaluate the developing degrees of debris flow in the study area. According to the evaluation results, the study area was divided into three areas: high growth area, medium growth area and low growth area. The high growth area concentrated on the hanging wall of Beichuan-Yingxiu Fault and distributed along Leigu-Qushan-Chenjiaba townships, accounting for 6.6% of the study area. The medium growth area located on both sides of the high growth area and mainly on the hanging wall of Beichuan-Yingxiu Fault, accounting for 22.5% of the study area. The rest belonged to low growth area, accounting for 70.9% of the study area. It was suggested that human activities should avoid debris flows in the high growth area and debris flow disaster evaluation should be conducted in the medium growth area to ensure no disaster threat, or must avoid debris flow, too.
AUTHOR KEYWORDS: Beichuan County; Debris flow; Developing degrees evaluation; Multi-factor superposition method; Restoration and reconstruction
INDEX KEYWORDS: Average annual precipitation; Beichuan County; Debris flow hazards; Debris flows; Developing degrees evaluation; Disaster evaluation; Evaluation factor; Evaluation models; Evaluation results; Field surveys; Growth areas; High growth; Human activities; Landslides density; Multi-factor; Remote sensing interpretation; Restricting factors; Seismic intensity; Sichuan , China; Slope gradients; Study areas; Superposition method; Wenchuan Earthquake; Decision theory; Disaster prevention; Earthquakes; Hierarchical systems; Lithology; Remote sensing; Restoration; Surface roughness; Debris
REFERENCES: Zhang, Jianqiang, Sensitivity evaluation to the earthquake-induced landslide and collapse: A case study of Beichuan County, Sichuan Province, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 140-145, (2009); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Cui, Peng, Distribution and risk analysis of dammed lakes reduced by Wenchuan earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 35-42, (2009); 
Earth Science Frontiers, (2008); 
Journal of Mountain Science, (2008); 
Journal of Mountain Science, (2009); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Journal of Engineering Geology, (2008); 
Journal of Mountain Science, (2010); 
Li, Chuanyou, Amounts and styles of coseismic deformation along the northern segment of surface rupture, of the 2008 Wenchuan Mw 7.9 earthquake, China, Tectonophysics, 491, 1-4, pp. 35-58, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, M., Wang, Z., Shi, W., Wang, X.
AUTHOR FULL NAMES: Xu, Mengzhen (34979414300); Wang, Zhaoyin (35486457100); Shi, Wenjing (36195684100); Wang, Xuzhao (36195739700)
34979414300; 35486457100; 36195684100; 36195739700
Mountain disaster chain induced by the Wenchuan earthquake in the Huoshiguo Gorge
(2010) Qinghua Daxue Xuebao/Journal of Tsinghua University, 50 (9), pp. 1338 - 1341, Cited 8 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957820010&partnerID=40&md5=d6edd81f863795d37523d87928e10cc0

AFFILIATIONS: Department of Hydraulic Engineering, Tsinghua University, Beijing, China; Institute of Geology and Geophysics Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Wenchuan earthquake triggered the Huoshigou landslide in the upstream part of the Wenjingjiang River. Following the landslide, debris flows, large fluvial deposits, and ecological changes occurred frequently, resulting in a secondary disaster chain. Field investigations combined spot surveys using a GPS and a laser distance meter, remote sensing, and topographic maps studied the processes and characteristics of the secondary disasters. Landscape changes in the Huoshigou Gorge are described in detail. The landslide volume was measured as around 7.21 million m3 with the debris flows transporting 1.25 million m3 of sediment to be deposited downstream. Intense fluvial process on the debris scoured down 0.06 million m3 of sediment from the 0.4 million m3 deposited debric. The volume of secondary disasters decreased along the disaster chain with an attenuation factor of about 1/6. Changes in the macroinvertebrate community in the area affected by the disasters showed that the river ecosystem was greatly disturbed. The flat land with an area of 0.25 km2 created by the landslide gradually stabilized after the disasters and can be used for new villages after simple strengthening.
AUTHOR KEYWORDS: Attenuation factor of disaster chain; Debris flow; Disasters chain; Huoshigou landslide; Wenchuan earthquake
INDEX KEYWORDS: Attenuation factor of disaster chain; Attenuation factors; Debris flow; Debris flows; Ecological changes; Field investigation; Fluvial deposits; Fluvial process; Huoshigou landslide; Landscape changes; Macroinvertebrate community; River ecosystem; Topographic map; Wenchuan Earthquake; Debris; Disasters; Earthquakes; Ecosystems; Maps; Remote sensing; Rivers; Sedimentology; Landslides
REFERENCES: Journal of Engineering Geology, (2008); 
Journal of Geomechanics, (2008); 
Koi, Takashi, Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan, Geomorphology, 101, 4, pp. 692-702, (2008); 
Bulletin of Chinese Academy of Sciences, (2008); 
Lin, Wentzu, Eco-environmental changes assessment at the Chiufenershan landslide area caused by catastrophic earthquake in Central Taiwan, Ecological Engineering, 33, 3-4, pp. 220-232, (2008); 
Wang, Zhaoyin, Continual erosion of bare rocks after the Wenchuan earthquake and control strategies, Journal of Asian Earth Sciences, 40, 4, pp. 915-925, (2011); 
Xu, Qiang, Landslide dams triggered by the Wenchuan Earthquake, Sichuan Province, south west China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 373-386, (2009); 
Fate of Persistent Organic Pollutants in the Environment, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Su, F., Cui, P., Zhang, J.-Q., Xiang, L.-Z.
AUTHOR FULL NAMES: Su, Fenghuan (14033176000); Cui, Peng (56706923500); Zhang, Jianqiang (35212366900); Xiang, Lingzhi (36195988600)
14033176000; 56706923500; 35212366900; 36195988600
Susceptibility assessment of landslides caused by the Wenchuan earthquake using a logistic regression model
(2010) Journal of Mountain Science, 7 (3), pp. 234 - 245, Cited 38 times.
DOI: 10.1007/s11629-010-2015-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77955168631&doi=10.1007%2Fs11629-010-2015-1&partnerID=40&md5=2ac646f3d8c8feda3d8f2c678b62647b

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Wenchuan earthquake on May 12, 2008 caused numerous collapses, landslides, barrier lakes, and debris flows. Landslide susceptibility mapping is important for evaluation of environmental capacity and also as a guide for post-earthquake reconstruction. In this paper, a logistic regression model was developed within the framework of GIS to map landslide susceptibility. Qingchuan County, a heavily affected area, was selected for the study. Distribution of landslides was prepared by interpretation of multi-temporal and multi-resolution remote sensing images (ADS40 aerial imagery, SPOT5 imagery and TM imagery, etc.) and field surveys. The Certainly Factor method was used to find the influencial factors, indicating that lithologic groups, distance from major faults, slope angle, profile curvature, and altitude are the dominant factors influencing landslides. The weight of each factor was determined using a binomial logistic regression model. Landslide susceptibility mapping was based on spatial overlay analysis and divided into five classes. Major faults have the most significant impact, and landslides will occur most likely in areas near the faults. Onethird of the area has a high or very high susceptibility, located in the northeast, south and southwest, including 65.3% of all landslides coincident with the earthquake. The susceptibility map can reveal the likelihood of future failures, and it will be useful for planners during the rebuilding process and for future zoning issues. © 2010 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Certainty factor; Gis; Landslide susceptibility; Logistic regression; Wenchuan Earthquake
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Binaghi, Elisabetta, Slope instability zonation: a comparison between certainty factor and fuzzy Dempster-Shafer approaches, Natural Hazards, 17, 1, pp. 77-97, (1998); 
Chung, Chungjo F., The representation of geoscience information for data integration, Nonrenewable Resources, 2, 2, pp. 122-139, (1993); 
Chung, Chungjo F., Probabilistic prediction models for landslide hazard mapping, Photogrammetric Engineering and Remote Sensing, 65, 12, pp. 1389-1399, (1999); 
Gokceoglu, C., Discontinuity controlled probabilistic slope failure risk maps of the Altindag (settlement) region in Turkey, Engineering Geology, 55, 4, pp. 277-296, (2000); 
Lineback Gritzner, Mandy, Assessing landslide potential using GIS, soil wetness modeling and topographic attributes, Payette River, Idaho, Geomorphology, 37, 1-2, pp. 149-165, (2001); 
Juang, Charnghsein, Mapping slope failure potential using fuzzy sets, Journal of Geotechcnical Engineering, 118, 3, pp. 475-494, (1992); 
Lan, Hengxing, Landslide hazard spatial analysis and prediction using GIS in the Xiaojiang watershed, Yunnan, China, Engineering Geology, 76, 1-2, pp. 109-128, (2004); 
Saro, Lee M., Statistical analysis of landslide susceptibility at Yongin, Korea, Environmental Geology, 40, 9, pp. 1095-1113, (2001); 
Saha, Ashis Kumar, An approach for GIS-based statistical landslide susceptibility zonation-with a case study in the Himalayas, Landslides, 2, 1, pp. 61-69, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, A.-L., Zhu, B.-Q., Wu, Y.-H., Li, G.-Z.
AUTHOR FULL NAMES: Chen, Ai Liah (55447313000); Zhu, Boqin (59122327600); Wu, Yanhua (56093432400); Li, Guozhu (56163758500)
55447313000; 59122327600; 56093432400; 56163758500
Assessment of road damage in severely affected areas of Wenchuan earthquake using airborne remote sensing
(2010) Journal of Natural Disasters, 19 (4), pp. 152 - 157, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649378086&partnerID=40&md5=2e739ac5a287c19ece3149aa58337034

AFFILIATIONS: College of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian, China; Center for Earth Observation and Digital Earth, Haidian, Beijing, China; Institute of Remote Sensing, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: At 14;28 on May 12, 2008, a catastrophic earthquake with a magnitude of 8 broke out in Wenchuan, Sichuan Province of China, followed by lots of aftershock. The quakes have brought about varieties of disasters, such as buildings collapse, landslides, floods, traffic block, etc. Roads,as a lifeline engineering, are always the most important facilities, for they are the only means to do rescue in almost all disasters, .especially in the earthquake, during which the telecommunication is always cut down and there are so many hurts. Thus,it makes good sense to know about the conditions of the traffic especially the roads and bridges, as well as rails, to decide how to give out help and foods, etc. , so that the total death would finally be minimized. This article firstly checks the conditions of the traffic from ADS40 optical images, and then calculates the damage of the roads with respect to some aspects (such as the hierarchy of the roads/counties, etc. ). The factors that affected the damage of the roads were analyzed in the end. The results show that 7.7% of the national roads and 10.2% of provincial roads are heavily ruined, and the roads in Wenchuan have the highest damage rate ( more than 22% ) , compared to other counties ' / cities '. Meanwhile, roads damage is found to have highly positive correlation with the earthquake intensity : the stronger the intensity is, the heavier the damage would be. Besides, roads damage is found to be affected by the topography as well as the geology.
AUTHOR KEYWORDS: ADS40; Airborne remote sensing; Roads traffic; Wenchuan earthquake
INDEX KEYWORDS: aftershock; airborne sensing; catastrophic event; earthquake damage; earthquake intensity; earthquake magnitude; hazard assessment; road; Sichuan earthquake 2008; topographic effect
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lu, H., Li, Y., Li, H., He, J., Ren, Z.
AUTHOR FULL NAMES: Lu, Heng (58596264900); Li, Yongshu (12752871800); Li, Hechao (57196364670); He, Jing (59827136300); Ren, Zhiming (36467108100)
58596264900; 12752871800; 57196364670; 59827136300; 36467108100
Digital processing of unmanned aerial vehicle image and its application in reconstruction of Wenchuan earthquake-hit areas
(2010) Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University, 45 (4), pp. 533 - 573, Cited 9 times.
DOI: 10.3969/j.issn.0258-2724.2010.04.008
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956009343&doi=10.3969%2Fj.issn.0258-2724.2010.04.008&partnerID=40&md5=bcb709e4db766da3ffd320352a89ed9e

AFFILIATIONS: School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China; Sichuan Research Institute of Territorial Surveying and Planning, Chengdu, Sichuan, China
ABSTRACT: In order to solve the difficulty in real-time acquisition of remote sensing data in multi-cloud regions, acquisition and digital processing methods of UAV (unmanned aerial vehicle) remote sensing images were discussed on the basis of the characteristics of high image resolution and good flexibility of low-altitude UAV remote sensing, and a three-dimensional image visualization process was discussed. For the reconstruction planning and design needs of Wenchuan earthquake-hit areas, the model designed for the reconstruction was introduced into the environment of a three-dimension geographic information system directly. The experimental results show that compared with satellite remote sensing data, UAV remote sensing images can provide rich geometric and semantic information in three-dimensional visualization. Combination of a design model and three-dimensional terrain scene can reproduce the design results in real-time, avoid the limitation and one-sidedness of the thinking brought about by two-dimensional graphics in a complex environment, and improve the true expression of design effects.
AUTHOR KEYWORDS: Image digital processing; Landscape planning and design; Three-dimensional visualization; Unmanned aerial vehicle (UAV)
INDEX KEYWORDS: Complex environments; Design effects; Design models; Digital processing; Landscape planning; Low-altitude; Planning and design; Real time acquisition; Remote sensing data; Remote sensing images; Satellite remote sensing data; Semantic information; Three dimensional images; Three dimensional terrain; Three dimensional visualization; Three-dimension; UAV (unmanned aerial vehicle); Wenchuan Earthquake; Data visualization; Design; Earthquakes; Geographic information systems; Image reconstruction; Image resolution; Processing; Remote sensing; Remotely operated vehicles; Repair; Unmanned aerial vehicles (UAV); Vehicles; Visualization; Three dimensional
REFERENCES: undefined, (2005); 
Journal of Image and Graphics, (2000); 
Journal of Shandong Normal University Natural Science, (2006); 
Journal of Anhui Agricultural Sciences, (2008); 
Heikkila, Janne Y., Four-step camera calibration procedure with implicit image correction, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp. 1106-1112, (1997); 
undefined, (1981); 
undefined, (1995); 
undefined, (2000); 
Zhang, Yongjun, Geometric processing of low altitude remote sensing images captured by unmanned airship, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 34, 3, pp. 284-288, (2009); 
Dang, Anrong, Dynamic variation of land use based on 3S technology, Qinghua Daxue Xuebao/Journal of Tsinghua University, 43, 10, pp. 1408-1411, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Zhao, L., Zhang, G., Xu, F.
AUTHOR FULL NAMES: Wang, Zhi (57192240313); Zhao, Linna (55480431700); Zhang, Guoping (57194018274); Xu, Fengwen (22954519600)
57192240313; 55480431700; 57194018274; 22954519600
Research on the Areal Precipitation Calculation Method for Dammed Lakes in Wenchuan Earthquake Disastrous Areas 汶川地震灾区堰塞湖流域面雨量计算方法研究
(2010) Meteorological Monthly, 36 (6), pp. 7 - 12, Cited 0 times.
DOI: 10.7519/j.issn.1000-0526.2010.6.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85210377926&doi=10.7519%2Fj.issn.1000-0526.2010.6.002&partnerID=40&md5=71a199eda168303f33b6b6ea74dcedea

AFFILIATIONS: National Satellite Meteorological Center Beijing, Beijing, China
ABSTRACT: It is vital to forecast the areal precipitation of the dammed lakes’ upper basines and the upper reaches of the rivers in the situation with the water level rising, which threats to the safety of life and property after the occurrence of the Wenchuan Earthquake. In the paper, it is realized the boundary extractions of the upper basins of Nanba, Tangjiashan, Xiaojiaqiao and Laoyingyan dammed lakes and the upper reaches of Jialing River, Minjiang River, Fujiang River, Tuojiang River and Qingyi River by using the DEM model, river map and the locations of dammed lakes based on the GIS system. The areal precipitation is calculated with the forecasting precipitation data of the weather stations in disastrous areas by the Thiessen polygon method. It is established a method of areal precipitation forecasting technology under the condition of incomplete information of basin characteristics available as well as emergency states, and it provides the technical support for decision making service on hydrometeorology. © 2010 China Meteorological Press. All rights reserved.
AUTHOR KEYWORDS: areal precipitation; boundary extraction; dammed lakes; DEM; Thiessen polygon method
REFERENCES: Dorninger, Manfred, On the interpolation of precipitation data over complex terrain, Meteorology and Atmospheric Physics, 101, 3-4, pp. 175-189, (2008); 
Garbrecht, Jürgen D., The assignment of drainage direction over flat surfaces in raster digital elevation models, Journal of Hydrology, 193, 1-4, pp. 204-213, (1997)
PUBLISHER: China Meteorological Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zang, K., Sun, Y.-H., Li, J., Yan, Z.-Z., Huili, H., Li, X.-J., Zhao, W.
AUTHOR FULL NAMES: Zang, Ke (36623055600); Sun, Yonghua (55737820600); Li, Jing (55872205000); Yan, Zhizhuang (36623063900); Huili, Gong (35240287700); Li, Xiaojuan (55718181400); Zhao, Wenji (12787367300)
36623055600; 55737820600; 55872205000; 36623063900; 35240287700; 55718181400; 12787367300
Application of miniature unmanned aerial vehicle remote sensing system to Wenchuan earthquake
(2010) Journal of Natural Disasters, 19 (3), pp. 162 - 166, Cited 24 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958491262&partnerID=40&md5=ab31ee4454c2e68dc5f0adf1334af417

AFFILIATIONS: Key Laboratory of 3D Information Acquisition and Application, Ministry of Education of the People's Republic of China, Beijing, Beijing, China; Engineering Research Center of Spatial Information Technology, Ministry of Education of the People's Republic of China, Beijing, Beijing, China; National Disaster Reduction Center of China, Ministry of Civil Affairs, Beijing, China; College of Resources Science and Technology, Beijing Normal University, Beijing, China
ABSTRACT: Miniature unmanned aerial vehicle remote sensing system (MUAVRSS) plays an important role in remote sensing data acquisition. It has many advantages, such as low operation cost, good running flexibility, and so on. First, this article introduces the system composition of MUAVRSS. Then it designs a technical process of monitoring serious natural disaster using MUAVRSS. Finally, we utilized MUAVRSS for taking photos of the town of Beichuan County, which is a heavy disaster area of Wenchuan earthquake. Hundred and seven clear aerial photos were acquired. According to image mosaic and geometry correction, we preliminarily evaluated the suffering condition by comparing to the spaceborne images before the strong earthquake. Better efforts were realized.
AUTHOR KEYWORDS: Disaster evaluation; Miniature unmanned aerial vehicle; Remote sensing system; Wenchuan earthquake
INDEX KEYWORDS: data acquisition; disaster management; remote sensing; Sichuan earthquake 2008; strong motion; unmanned vehicle; Beichuan; China; Sichuan
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
New House Internet Services B V V 8 0 2, (2008); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Y.S., Guo, X., Zhong, M.J., Shen, W.R., Li, W., He, B.
AUTHOR FULL NAMES: Zhang, Yuansheng (23487593300); Guo, Xiao (38861546400); Zhong, Meijiao (36480742800); Shen, Wenrong (36480591000); Li, Wen (59892103000); He, Bin (57679102300)
23487593300; 38861546400; 36480742800; 36480591000; 59892103000; 57679102300
Wenchuan earthquake: Brightness temperature changes from satellite infrared information
(2010) Chinese Science Bulletin, 55 (18), pp. 1917 - 1924, Cited 75 times.
DOI: 10.1007/s11434-010-3016-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953893743&doi=10.1007%2Fs11434-010-3016-8&partnerID=40&md5=bb35305a0987209e4025ab6b4e6b6ba8

AFFILIATIONS: Lanzhou Institute of Seismology, China Earthquake Administration, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: By using an alternative processing method for satellite infrared remote sensing data and adopting the China Geostationary Meteorological Satellite (FY-2C) infrared remote sensing brightness temperature data, we studied the great 2008 Wenchuan Ms8. 0 earthquake. Results indicate the obvious characteristic period and amplitude, and distribution of thermal infrared anomalies before the Wenchuan earthquake. And we discussed the mechanism of the observed pre-earthquake thermal anomalies. The characteristics of observed thermal infrared anomalies are easy to be recognized and applied, and could provide a criterion for thermal anomalies of earthquakes. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Brightness temperature change; Geostationary Meteorological Satellite infrared remote sensing; Wenchuan Ms8.0 earthquake
REFERENCES: Science, (2008); 
Stone, Richard, Wenchuan earthquake: Damaged university mourns its dead - and plans fast recovery, Science, 320, 5880, (2008); 
Science, (2008); 
Stone, Richard, Wenchuan earthquake: Scientists race against the clock to gauge landslide risk, Science, 320, 5882, (2008); 
Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Zhang, Zhongjie, Crustal structure across Longmenshan fault belt from passive source seismic profiling, Geophysical Research Letters, 36, 17, (2009); 
Deng, Zhihui, Complicated phenomena of the Beichuan-Yingxiu surface fracture zone during Wenchuan Ms8.0 earthquake in Sichuan Province, China, Chinese Science Bulletin, 53, 24, pp. 3891-3896, (2008); 
Geller, Robert J., Earthquakes cannot be predicted, Science, 275, 5306, pp. 1616-1617, (1997); 
Proc Acad Sci USSR, (1988); 
Chinese Science Bulletin, (1992)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Gong, J., Wang, D., Li, Y., Zhang, L., Yue, Y., Zhou, J., Song, Y.
AUTHOR FULL NAMES: Gong, Jianhuaa Hua (59157665500); Wang, Dongchuan (34873779300); Li, Yi (55983807900); Zhang, Lihui (55709295900); Yue, Yujuan (36135093400); Zhou, Jieping (14324017900); Song, Yiquan (55428354300)
59157665500; 34873779300; 55983807900; 55709295900; 36135093400; 14324017900; 55428354300
Earthquake-induced geological hazards detection under hierarchical stripping classification framework in the Beichuan area
(2010) Landslides, 7 (2), pp. 181 - 189, Cited 31 times.
DOI: 10.1007/s10346-010-0201-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953025668&doi=10.1007%2Fs10346-010-0201-4&partnerID=40&md5=baa228fedf9f92d47ce3b93a57e80088

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Tianjin Institute of Urban Construction, Tianjin, Tianjin, China
ABSTRACT: The Wenchuan earthquake-induced geological hazards, such as rock falls, landslides, and debris flows, caused as much damage as the earthquake itself. In the complicated environment of the disaster area, seldom can a single remotely sensed imagery and a single classification method meet the needs of the interpretation task. In this paper, taking the Beichuan area as an example, the hierarchical stripping classification (HSC) framework, supported by human-computer interactive interpretation, was applied to tackle the problems caused by the earthquake, as well as the local complicated landform and weather environments. Different classification tools were used to detect specific objects under the HSC framework. Multi-source and multi-temporal data from satellite remote sensors (mainly CBERS-02B charge-coupled device and HR images), unmanned aerial vehicles (UAV), digital elevation model, and other auxiliary sources were utilized to detect the distribution of geological hazards. The classification results were compared with that of an overall supervised classification. The results show that the HSC framework and the related methods are effective and work well in the study area. © Springer-Verlag 2010.
AUTHOR KEYWORDS: CBERS-02B; Geological hazards; HSC framework; Image fusion; UAV; Wenchuan earthquake
INDEX KEYWORDS: Auxiliary source; CBERS-02; Classification framework; Classification methods; Classification results; Classification tool; Debris flows; Digital elevation model; Disaster areas; Geological hazards; Human-computer; Multi-temporal data; Multisources; Remote sensors; Remotely sensed imagery; Rockfalls; Study areas; Supervised classification; Wenchuan Earthquake; Debris; Image fusion; Remote sensing; Remotely operated vehicles; Rock bursts; Stripping (dyes); Earthquakes; debris flow; digital elevation model; geological hazard; remote sensing; rockfall; satellite imagery; Sichuan earthquake 2008; Beichuan; China; Sichuan
REFERENCES: Accuracy Assessment of Remote Sensing Derived Change Detection, (1999); 
Cheng, Ke Sheng, Locating landslides using multi-temporal satellite images, Advances in Space Research, 33, 3, pp. 296-301, (2004); 
Assessing the Accuracy of Remotely Sensed Data Principles and Practices, (1999); 
Foody, Giles M., A relative evaluation of multiclass image classification by support vector machines, IEEE Transactions on Geoscience and Remote Sensing, 42, 6, pp. 1335-1343, (2004); 
Gong, Jianya, Object-level change detection based on full-scale image segmentation and its application to Wenchuan Earthquake, Science in China, Series E: Technological Sciences, 51, SUPPL. 2, pp. 110-122, (2008); 
Atlas of Remote Sensing for Wenchuan Earthquake Disaster, (2008); 
Hervás, Javier, Monitoring landslides from optical remotely sensed imagery: The case history of Tessina landslide, Italy, Geomorphology, 54, 1-2, pp. 63-75, (2003); 
Huang, Runqiu, Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 363-371, (2009); 
Kerr, Jeremy Thomas, From space to species: Ecological applications for remote sensing, Trends in Ecology and Evolution, 18, 6, pp. 299-305, (2003); 
Lin, Pingsien, Assessing debris-flow hazard in a watershed in Taiwan, Engineering Geology, 66, 3-4, pp. 295-313, (2002)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Deng, X., Jiang, Q., Ge, Q., Yang, L.
AUTHOR FULL NAMES: Deng, Xiangzheng (7401769047); Jiang, Qun'ou (36106732400); Ge, Quansheng (55681862500); Yang, Linsheng (55660863700)
7401769047; 36106732400; 55681862500; 55660863700
Impacts of the Wenchuan Earthquake on the giant panda nature reserves in China
(2010) Journal of Mountain Science, 7 (2), pp. 197 - 206, Cited 17 times.
DOI: 10.1007/s11629-010-1073-8
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952845836&doi=10.1007%2Fs11629-010-1073-8&partnerID=40&md5=fc12e47cc58dced188cf6cd15f79c377

AFFILIATIONS: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Center for Chinese Agricultural Policy, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Wenchuan Earthquake that occurred in May of 2008 caused damages to large areas of Sichuan, Gansu, and Shaanxi provinces in China. Reports from local governments and related management agencies show that the giant panda nature reserves in the earthquake-hit areas were heavily damaged. Our estimates in this paper of the impacts of the earthquake on the giant panda in the earthquake-hit areas were made based on the interpretation of remote sensing images and information collected by field survey. A rapid assessment method was designed to estimate the damages of the earthquake on giant panda habitats. By using visual interpretation methods, we decoded the remote sensing images of the disaster area in the 49 giant panda nature reserves. Research results showed that the Wenchuan Earthquake and the succeeding secondary geological disasters caused great damages to the giant panda nature reserves and disturbed the normal life of the giant pandas there (e. g., landscape fragmentation increased significantly). Undoubtedly, the life of the giant pandas there was affected. However, although the earthquake caused certain impacts on the giant pandas, it did not really threat their survival. Even so, we still strongly advocate for protection of the giant pandas, and have prioritized a couple of measures to be taken to restore the giant panda nature reserves in the earthquake-hit areas. © 2010 Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.
AUTHOR KEYWORDS: Giant panda; Giant panda nature reserve; Rapid assessment method; Remote sensing; Wenchuan earthquake
REFERENCES: Application of High Resolution Optical Satellite Imagery for Post Earthquake Damage Assessment the 2003 Boumerdes and Bam Earthquakes Mceer Research and Accomplishments 2003 2004, (2004); 
Bystriakova, Nadia, Distribution and conservation status of forest bamboo biodiversity in the Asia-Pacific Region, Biodiversity and Conservation, 12, 9, pp. 1833-1841, (2003); 
Acta Ecologica Sinica, (1999); 
Journal of Geographical Sciences, (2002); 
Korsu Kandeh, Joseph Maada, Using remote sensing data for earthquake damage assessment in Afghanistan: The role of the international charter, pp. 829-840, (2005); 
Keski-Saari, Sarita, Phenolics from the culms of five bamboo species in the Tangjiahe and Wolong Giant Panda Reserves, Sichuan, China, Biochemical Systematics and Ecology, 36, 10, pp. 758-765, (2008); 
Li, Xinpo, Seismically induced slope instabilities and the corresponding treatments: The case of a road in the Wenchuan earthquake hit region, Journal of Mountain Science, 6, 1, pp. 96-100, (2009); 
Liu, Jiyuan, Study on spatial pattern of land-use change in China during 1995-2000, Science in China, Series D: Earth Sciences, 46, 4, pp. 373-384, (2003); 
Journal of Remote Sensing, (1997); 
Loucks, Colby J., Giant pandas in a changing landscape, Science, 294, 5546, (2001)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jiang, Y., Wang, C., Zhao, X.
AUTHOR FULL NAMES: Jiang, Yuijing (7404832361); Wang, Chunxiang (56909068300); Zhao, Xiaodong (57195008593)
7404832361; 56909068300; 57195008593
Damage assessment of tunnels caused by the 2004 Mid Niigata Prefecture Earthquake using Hayashi's quantification theory type II
(2010) Natural Hazards, 53 (3), pp. 425 - 441, Cited 85 times.
DOI: 10.1007/s11069-009-9441-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951967085&doi=10.1007%2Fs11069-009-9441-9&partnerID=40&md5=89e1996247a48aee25f20af235e922a2

AFFILIATIONS: Department of Civil Engineering, Nagasaki University, Nagasaki, Nagasaki, Japan; Shandong University of Science and Technology, Qingdao, Shandong, China; China-Japan Research Center for Geo-environmental Science, Dalian University, Dalian, Liaoning, China
ABSTRACT: Mountain tunnels, being underground structures and situated deep within rock layers, are generally considered to suffer appreciably less damage from earthquakes than surface structures. However, it has been reported that many tunnels were damaged by the 1923 Great Kantou earthquake, the 1995 Great Hanshin Earthquake, the 1999 Taiwan Chi-Chi Earthquake, the 2004 Mid Niigata Prefecture Earthquake and the May 2008 Great Wenchuan Earthquake in China. In this study, the damaged tunnels resulted of the 2004 Mid Niigata Prefecture Earthquake are the study objects. The damage patterns are analyzed, and the information which is considered to be of influence, such as the distance to epicenter, the completion time, the geological conditions, etc., are collected. A database of the damaged tunnels has been created using a Geographic Information System (GIS). The influence ranking for these factors has been analyzed using Hayashi's quantification theory II. The degree of the tunnel damage has also been assessed using GIS and Hayashi's quantification theory II. The field investigation is in close agreement with the assessment results following Hayashi's quantification theory II. © Springer Science+Business Media B.V. 2009.
AUTHOR KEYWORDS: Damage; Earthquake; Geographic information system (GIS); Hayashi's quantification theory type II; Tunnel
INDEX KEYWORDS: assessment method; Chi-Chi earthquake 1999; database; earthquake damage; earthquake engineering; GIS; quantitative analysis; Sichuan earthquake 2008; tunnel; China
REFERENCES: Asakura, Toshihiro, Mountain tunnels damage in the 1995 Hyogoken-Nanbu Earthquake, Quarterly Report of RTRI (Railway Technical Research Institute) (Japan), 39, 1, pp. 9-14, (1998); 
Dowding, Charles H., DAMAGE TO ROCK TUNNELS FROM EARTHQUAKE SHAKING, Journal of the Geotechnical Engineering Division, ASCE, 104, 2, pp. 175-191, (1978); 
Exploring Arcobjects, (2001); 
Hashash, Youssef M.A., Seismic design and analysis of underground structures, Tunnelling and Underground Space Technology, 16, 4, pp. 247-293, (2001); 
Proceedings of the Japan Academy, (1954); 
Method of Quantification, (1976); 
Monthly Report on Earthquakes and Volcanoes in Japan October 2004, (2004); 
Proceedings of the 43th Jncge Hiroshima 08, (2008); 
Journal of Geotechnical Engineering Jsce, (2008); 
Kawakami, Hideji, Evaluation of deformation of tunnel structure due to Izu‐Oshima‐Kinkai earthquake of 1978, Earthquake Engineering and Structural Dynamics, 12, 3, pp. 369-383, (1984)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; GREEN ACCEPTED OPEN ACCESS; GREEN OPEN ACCESS

Xu, C., Dai, F., Yao, X., Chen, J., Tu, X., Cao, Y., Xiao, J.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Dai, Fuchu (7102055666); Yao, Xin (55723721600); Chen, Jian (55717623400); Tu, Xinbin (7102136710); Cao, Yanbo (59863977700); Xiao, Jianzhang (7402564381)
35184309900; 7102055666; 55723721600; 55717623400; 7102136710; 59863977700; 7402564381
GIS based certainty factor analysis of landslide triggering factors in Wenchuan earthquake
(2010) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 29 (SUPPL. 1), pp. 2972 - 2981, Cited 53 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77955021071&partnerID=40&md5=05994d003eb2fd2c88facd719cd17847

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China; China University of Geosciences, Beijing, Beijing, China
ABSTRACT: On May 12, 2008 at 14:28(local time), a catastrophic earthquake with surface wave magnitude of 8.0 struck the Sichuan Province of China. Tens of thousands of landslides were triggered by this earthquake over a broad area. 48007 landslides were interpreted from aerial photographs and multi-source remote sensing imageries, and they are verified by field investigation. Based on the interpretation results, landslide triggering factors with certainty analysis is carried out by means of GIS spatial analysis. The 12 impact factors contributing to the Wenchuan earthquake-induced landslide occurrences include stratigraphic, lithology, main faults, seismic intensity, macroscopic epicenter, surface rupture points, slope gradient, aspect, profile curvature, elevation, drainages, and roads. The certainty factor analysis result shows that five categories of high landslide susceptibility value are as follows: (1) stratigraphic of Cambrian, Ordovician, Permian and Carboniferous, lithology of intrusive rock group and limestone rock group; (2) Wenchuan earthquake-induced landslides are most affected by the main central fault, and also controlled by the Qianshan fault, the little impact for Houshan fault; (3) there are correlations between landslide susceptibility and seismic intensity, distance from the epicenter and surface rupture zone; (4) slope gradient of more than 40°, aspects of east and southeast directions, elevations between 1000m and 2000m, especial between 1000m and 1500m were susceptible for landslide occurrence; and (5) distance to drainages is less than 400m and less than 2000m away from roads. The results show that the numerical intervals of each factor are inclined to landslides. This work is the basement for further study of earthquake- induced landslides hazard evaluation and prediction.
AUTHOR KEYWORDS: Certainty factor; Earthquake-induced landslide; Slope engineering; Spatial analysis; Wenchuan earthquake
INDEX KEYWORDS: Certainty factor; Certainty factors; Slope engineering; Spatial analysis; Wenchuan Earthquake; Drainage; Earthquakes; Geographic information systems; Landslides; Lithology; Photography; Remote sensing; Roads and streets; Stratigraphy; Surface waves; Slope protection
REFERENCES: Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Xia, Yuanyou, Sensibility analysis of slope stability based on artificial neural network, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 23, 16, pp. 2703-2707, (2004); 
Wang, Yang, Grey correlation analysis of sensitive factors of landslide, Yantu Lixue/Rock and Soil Mechanics, 25, 1, pp. 91-93, (2004); 
Chai, Bo, Sensitivity analysis of landslide stability based on distribution models of influencing factors, Yantu Lixue/Rock and Soil Mechanics, 28, 12, pp. 2624-2628, (2007); 
Rock and Soil Mechanics, (2004); 
Ni, Heng, Applications of orthogonal design to sensitivity analysis of landslide, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 21, 7, pp. 989-992, (2002); 
Chinese Journal of Rock Mechanics and Engineering, (2002); 
Journal of Mountain Science, (2002); 
Chen, Xiaoli, Triggering factors susceptibility of earthquake-induced landslides in 1976 Longling Earthquake, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 45, 1, pp. 104-109, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Di, B., Zeng, H., Zhang, M., Ustin, S.L., Tang, Y., Wang, Z., Chen, N., Zhang, B.
AUTHOR FULL NAMES: Di, Baofeng (14057800700); Zeng, Hongjuan (55433864100); Zhang, Minghua (56004320000); Ustin, Susan L. (35570142700); Tang, Ya (7404591111); Wang, Zhaoyin (35486457100); Chen, Ningsheng (8726157200); Zhang, Bin (55605769056)
14057800700; 55433864100; 56004320000; 35570142700; 7404591111; 35486457100; 8726157200; 55605769056
Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area
(2010) Remote Sensing of Environment, 114 (4), pp. 761 - 771, Cited 52 times.
DOI: 10.1016/j.rse.2009.11.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-75149139328&doi=10.1016%2Fj.rse.2009.11.011&partnerID=40&md5=8b5daa09236b667ffad49cab75ea6bdb

AFFILIATIONS: College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China; School of Geography, Beijing Normal University, Beijing, China; Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, United States; Tsinghua University, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Land and Resources College, China West Normal University, Nanchong, Sichuan, China
ABSTRACT: The beautiful Longmenshan area is one of the main tourist attractions in Sichuan Province, China. The epicenter of a catastrophic earthquake measured at 8.0 Ms (China Seismological Bureau), occurred within this area at Wenchuan (31°01′16″N, 103°22′01″E) at 14:28 May 12, 2008 (Beijing time). The earthquake triggered numerous types of landslide transport and hazards, including soil and debris avalanches, rockfalls, slumps, debris flows, creation of barrier lakes and slope flattenings. This paper examines the landslide hazards in the Longmenshan area caused by the earthquake using remotely sensed images, mainly Beijing-1 Microsatellite data before and after the earthquake, compared to digital elevation maps and slope gradient maps, land use and vegetation cover maps. Areas of erosion and loss of vegetation were compared from pre- and post-earthquake data, from which were calculated changes in vegetated areas, bare slopes, and mass movement during the earthquake. These events occurred over altitudes from 1000 to 4000 m and on slope angles between 25 and 55°. The results show that the total area of erosion and land movement due to the earthquake increased by 86.3 km2 (19.2% of the study area). Compared with pre-earthquake, the areas of very low intensity soil erosion and moderate intensity soil erosion were respectively reduced by 3.6 km2, 24.3 km2 and 30.9 km2. On the other hand, the areas of severe and very severe intensity soil erosion were substantially increased by 45.8 km2 and 99.2 km2. In the post-earthquake stage, the bare areas (vegetation cover < 15%) have increased by 65.8 km2. Without vegetation, the denuded earthquake damaged slopes and other high risk sites have become severe erosion problems. Thus, it is essential to continue long-term monitoring of mass wasting in the denuded areas and evaluate potential risk sites for future landslides and debris flows. We anticipate that these results will be helpful in decision making and policy planning for recovery and reconstruction in the earthquake-affected area. © 2009 Elsevier Inc.
AUTHOR KEYWORDS: GIS; Landslides; Longmenshan scenic area (LMSS); Mass wasting of soil; RS; Wenchuan Earthquake
INDEX KEYWORDS: Affected area; Before and after; Beijing-1; Catastrophic earthquake; Debris avalanches; Debris flows; Digital Elevation Map; Earthquake data; Landslide hazard; Long term monitoring; Low-intensity; Mass movement; Mass wasting; Mass wasting of soil; Microsatellite data; Policy planning; Potential risks; Remotely sensed images; Rockfalls; Severe erosion; Sichuan province; Slope angles; Slope gradients; Soil erosion; Soil mass; Spatial distribution; Study areas; Tourist attractions; Vegetation cover; Wenchuan Earthquake; Debris; Geographic information systems; Land use; Landslides; Rapid solidification; Remote sensing; Rock bursts; Size distribution; Soil mechanics; Soils; Vegetation; Earthquakes; catastrophic event; decision making; digital elevation model; earthquake damage; GIS; landslide; remote sensing; satellite data; satellite imagery; soil erosion; spatial distribution; tourist attraction; China; Sichuan; Wenchuan
REFERENCES: Manyatsi, Absalom M., Mapping of soil erosion using remotely sensed data in Zombodze South, Swaziland, Physics and Chemistry of the Earth, 33, 8-13, pp. 800-806, (2008); 
Malamud, Bruce D., Landslides, earthquakes, and erosion, Earth and Planetary Science Letters, 229, 1-2, pp. 45-59, (2004); 
Earth Science Frontiers, (2008); 
Journal of Mountain Science, (2008); 
Chen, Zhengchao, The cross calibration of Beijing-1 microsatellite multispectral sensors, Yuhang Xuebao/Journal of Astronautics, 29, 2, pp. 637-643, (2008); 
Research of Soil and Water Conservation, (2005); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009); 
Journal of Mountain Science, (2008); 
Keefer, David K., The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions, Geomorphology, 10, 1-4, pp. 265-284, (1994); 
Remote Sensing Change Detection Environmental Monitoring Methods and Applications, (1998)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Z., Ma, J., Zhang, R., Li, L.
AUTHOR FULL NAMES: Li, Zuchuan (35213457300); Ma, Jianwen (7406200149); Zhang, Rui (59278353800); Li, Liwei (55730921800)
35213457300; 7406200149; 59278353800; 55730921800
Extracting damaged buildings information automatically based on textural and morphological features
(2010) Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 35 (4), pp. 446 - 450, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952502339&partnerID=40&md5=6aa444886481182d599bf7170b44f51f

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China; Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Graduate School, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Extracting damaged buildings accurately and quickly through remote sensing has an important meaning to damage evaluation and relief after earthquake. A method, which based only on high spatial resolution optical remotely sensed image acquired after earthquake and fused textural features and morphological features, was proposed to extract damaged buildings automatically. Besides, the use and behaving of different scales textural features and morphological features in damaged buildings extraction were investigated. A study case, Wenchuan Earthquake, was studied. Experiment results showed that this method could extract damaged buildings effectively and reach a good result that the product accuracy and the user accuracy of damaged buildings, and Kappa coefficient were 86.65%, 86.35% and 0.7906 respectively.
AUTHOR KEYWORDS: Feature selection; High spatial resolution; Morphological feature; Textural feature
INDEX KEYWORDS: Damage evaluation; Different scale; Feature selection; High spatial resolution; Kappa coefficient; Morphological features; Remotely sensed images; Study case; Textural feature; Wenchuan Earthquake; Buildings; Earthquakes; Image resolution; Remote sensing; Feature extraction; accuracy assessment; building; damage mechanics; information system; remote sensing; satellite imagery; Sichuan earthquake 2008; spatial resolution
REFERENCES: Chini, Marco, Exploiting SAR and VHR optical images to quantify damage caused by the 2003 bam earthquake, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 145-152, (2009); 
Haralick, Robert Martin, Textural Features for Image Classification, IEEE Transactions on Systems, Man and Cybernetics, SMC-3, 6, pp. 610-621, (1973); 
Clausi, David A., An analysis of co-occurrence texture statistics as a function of grey level quantization, Canadian Journal of Remote Sensing, 28, 1, pp. 45-62, (2002); 
Coburn, Craig A., A multiscale texture analysis procedure for improved forest stand classification, International Journal of Remote Sensing, 25, 20, pp. 4287-4308, (2004); 
Pesaresi, Martino, Texture analysis for urban pattern recognition using fine-resolution panchromatic satellite imagery, Geographical and Environmental Modelling, 4, 1, pp. 43-63, (2000); 
Clausi, David A., Grey level co-occurrence integrated algorithm (GLCIA): A superior computational method to rapidly determine co-occurrence probability texture features, Computers and Geosciences, 29, 7, pp. 837-850, (2003); 
Pesaresi, Martino, A new approach for the morphological segmentation of high-resolution satellite imagery, IEEE Transactions on Geoscience and Remote Sensing, 39, 2, pp. 309-320, (2001); 
Guyon, Isabelle M., Gene selection for cancer classification using support vector machines, Machine Learning, 46, 1-3, pp. 389-422, (2002); 
Nature of Statistical Learning Theory, (1995); 
Libsvm A Library for Support Vector Machines, (2001)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Qi, X., Tang, C., Tie, Y.-B., Liang, J.-T.
AUTHOR FULL NAMES: Qi, Xin (35932814100); Tang, Chuan (35932953300); Tie, Yongbo (26656325300); Liang, Jingtao (35205586800)
35932814100; 35932953300; 26656325300; 35205586800
Hazard assessment of geohazards triggered by the Wenchuan earthquake using GIS technology - Taking Beichuan County of Sichuan Province for example
(2010) Journal of Chengdu University of Technology (Science and Technology Edition), 37 (2), pp. 160 - 167, Cited 7 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952045240&partnerID=40&md5=6fe27e52350294a3c3be5e05f7c74963

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: This paper discusses the methodology for hazard assessment of geohazards triggered by the Wenchuan Earthquake on 12 May 2008 based on an emergency survey after the shock. The Beichuan County of Sichuan Province is selected as a case study. Five assessment indicators are extracted and overlaid and analysed to assess the landslide susceptibility using GIS technology. The rainfall indicator is overlaid with the landslide susceptibility map to produce the hazard assessment map. The results show that the high-hazard area accounts for 52. 6% and the number of geohazards in the study area accounts for 95.9%, the moderate-hazard area accounts for 25.1% and the number of geohazards in this area accounts for 3.7%, the low-hazard area accounts for 22.3% and the number of geohazards in this area accounts for 0.4%.
AUTHOR KEYWORDS: Beichuan county; Geohazard; GIS; Hazard assessment; Wenchuan earthquake
INDEX KEYWORDS: aftershock; earthquake mechanism; GIS; hazard assessment; landslide; mapping method; seismic hazard; Sichuan earthquake 2008; technology adoption; Beichuan; China; Sichuan
REFERENCES: Post Earthquake Damage Assessment Using Satellite and Aerial Video Imagery, (2004); 
Cross, Martin, Landslide susceptibility mapping using the Matrix Assessment Approach: A Derbyshire case study, Geological Society Engineering Geology Special Publication, 15, pp. 247-261, (1998); 
undefined, (2010); 
undefined, (2010); 
Conoscenti, Christian, GIS analysis to assess landslide susceptibility in a fluvial basin of NW Sicily (Italy), Geomorphology, 94, 3-4, pp. 325-339, (2008); 
undefined, (2010); 
Carrara, Alberto, GIS techniques and statistical models in evaluating landslide hazard, Earth Surface Processes and Landforms, 16, 5, pp. 427-445, (1991); 
undefined, (2010); 
Van Westen, Cees J., Analyzing the evolution of the Tessina landslide using aerial photographs and digital elevation models, Geomorphology, 54, 1-2, pp. 77-89, (2003); 
Landslides Evaluation and Stabilization, (2004)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cheng, J., Wang, D.-Y., Li, D.-L., Pang, H.-Q., Wang, S.-C., Li, J.
AUTHOR FULL NAMES: Cheng, Jian (55492695100); Wang, Duoyi (56102959500); Li, Deli (37862669400); Pang, Heqing (36020480800); Wang, Shuaicheng (36020868300); Li, Jun (59450744200)
55492695100; 56102959500; 37862669400; 36020480800; 36020868300; 59450744200
Research on the Wenchuan earthquake "endpoint effect": On the geothermal anomaly in Longquanyi, Chengdu, China
(2010) Journal of Chengdu University of Technology (Science and Technology Edition), 37 (2), pp. 155 - 159, Cited 1 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952028603&partnerID=40&md5=115ffea7b545e4bbb1b2edbc92d3376a

AFFILIATIONS: College of Energy, Chengdu University of Technology, Chengdu, China
ABSTRACT: By use of the geologic remote sensing, soil radon measurement, geoelectric survey, ground temperature measurement, in combination with the related geologic information and site survey, this paper studies the mechanism of "spotted geothermal anomaly" in Longquanyi of Chengdu. The Longquanyi fault cut by its secondary faults has trends of N-S and NE-SW. These faults have a clear remote sensing image. The concentration of the soil radon above the faults is very high, moreover, from the exterior to the spotted geothermal anomaly, the concentration of the soil radon heightens gradually. All the evidences indicate that the Longquanyi fault has activities and high permeability and some fluid can rise through this fault. The loose soils locally distributed over the fault work as a "heat pipe". The Wenchuan earthquake was triggered by the Longmenshan overthrust nappy belt. Vigorous movements of the Wenchuan earthquake caused the rocks of the Chengdu foreland basin to dislocate along with the Middle Triassic lower slip horizon and generated a great quantity of structural heat, then the heat transferred along the slip horizon to the Longquanshan Mountain - the uplift foreland of the Longmenshan nappy structural belts. Finally, the heat could rise through the active Longquanyi fault and come into being spotted geothermal anomaly on the surface with the help of the "heat pipe". The main cause of the geothermal anomalies maybe the earthquake "endpoint effect" of structural heat triggered by the Wenchuan earthquake. No destructive earthquake will happen in Longquanshan, and there will be a good exploration prospect of geotherm. Longmenshan is worth further researching.
AUTHOR KEYWORDS: Active fault; Geoelectricity; Geothermal anomaly; Radon measurement; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: active fault; dislocation; fault zone; foreland basin; geoelectric field; geothermal system; heat flow; heat transfer; permeability; radon; remote sensing; research work; Sichuan earthquake 2008; slip rate; surface temperature; Triassic; Chengdu; China; Longquanyi; Sichuan
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yin, J., Chen, J., Xiwei, X., Wang, X., Zheng, Y.
AUTHOR FULL NAMES: Yin, Jinhui (7401693283); Chen, Jie (55717584500); Xiwei, Xu (8246843900); Wang, Xulong (57192633421); Zheng, Yonggang (55713154900)
7401693283; 55717584500; 8246843900; 57192633421; 55713154900
The characteristics of the landslides triggered by the Wenchuan Ms 8.0 earthquake from Anxian to Beichuan
(2010) Journal of Asian Earth Sciences, 37 (5-6), pp. 452 - 459, Cited 62 times.
DOI: 10.1016/j.jseaes.2009.12.002
https://www.scopus.com/inward/record.uri?eid=2-s2.0-74449092604&doi=10.1016%2Fj.jseaes.2009.12.002&partnerID=40&md5=3e73ac8ec66888ff980f6c91a438a388

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Institute of Earth Environment, Xi'an, Shaanxi, China
ABSTRACT: This paper presents a quantitative analysis of the number and area of the landslides triggered by the Wenchuan M<inf>s</inf> 8.0 earthquake from Anxian to Beichuan. In this study the controlling factors of landslides are obtained from geological maps, relief amplitude, slope, and topographic roughness calculated from DEM data in ArcGis 9.2. A total of 4134 landslides are identified from digital aero-image of 1 m resolution, covering 19.7 km2 that accounts for 6.4% of the study area. The number of landslides with areas less than 5000 m2 is up to 85.22%. The smallest landslide is 6 m2 and the largest 1515,000 m2. The number of landslides which have occurred is 1.6 times more prevalent at hanging walls as opposed to foot walls. Also the relationship between the numbers of landslides and the distances to an earthquake rupture at a hanging wall is linear but exponential at a footwall. These results prove that landslide activity is more severe at hanging walls than at foot walls. The outcrop area of geologic unit is proportional to the number of landslides except the Jurassic, Triassic and Quaternary units (R2 = 0.952) in the study area, and landslide density is 19. Meanwhile the area of a landslide is linearly proportional to outcrop area of geologic unit except Jurassic, Lower Cambrian and Quaternary unit (R2 = 0.8279) in the study area and appear to indicate that the lithology does not play an important role in landslides in the study area. Earthquake-triggered landslides tend to be concentrated in specific zones associated with the event-controlling parameters such as reliefs, slopes and topographic roughness. The landslides occurred particularly in the range of 600-1293 m relief amplitudes, and the number in this range amounts to 90% of total slides in the studied region. Moreover, landslides easily occurred in the curvature 1-15 with slope between 5° and 55°. In addition, landslides also usually occurred in the range of 1-1.5 topographic roughness. Therefore these correlations provide a way to assess regional landslide hazards and are of great significance to regional geohazard planning and prediction. © 2009 Elsevier Ltd. All rights reserved.
AUTHOR KEYWORDS: DEM; GIS; Landslide; Wenchuan earthquake
INDEX KEYWORDS: digital elevation model; digital image; earthquake magnitude; earthquake rupture; footwall; geological hazard; geological mapping; GIS; hanging wall; hazard assessment; image resolution; landslide; lithology; quantitative analysis; Sichuan earthquake 2008; topography; trigger mechanism; Beichuan; China; Sichuan
REFERENCES: Arora, Manoj Kumar, An artificial neural network approach for landslide hazard zonation in the bhagirathi (ganga) valley, himalayas, International Journal of Remote Sensing, 25, 3, pp. 559-572, (2004); 
Ayalew, Lulseged, The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda-Yahiko Mountains, Central Japan, Geomorphology, 65, 1-2, pp. 15-31, (2005); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Carrara, Alberto, Multivariate models for landslide hazard evaluation, Journal of the International Association for Mathematical Geology, 15, 3, pp. 403-426, (1983); 
Carro, Monica, The application of predictive modeling techniques to landslides induced by earthquakes: The case study of the 26 September 1997 Umbria-Mache earthquake (Italy), Engineering Geology, 69, 1-2, pp. 139-159, (2003); 
Dai, Fuchu, The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China, Geomorphology, 65, 3-4, pp. 205-221, (2005); 
Del Gaudio, Vincenzo, Time probabilistic evaluation of seismically induced landslide hazard in Irpinia (Southern Italy), Soil Dynamics and Earthquake Engineering, 24, 12, pp. 915-928, (2004); 
Journal of Mountain Science, (2005); 
van den Eeckhaut, Miet, Prediction of landslide susceptibility using rare events logistic regression: A case-study in the Flemish Ardennes (Belgium), Geomorphology, 76, 3-4, pp. 392-410, (2006); 
Ermini, Leonardo, Artificial Neural Networks applied to landslide susceptibility assessment, Geomorphology, 66, 1-4 SPEC. ISS., pp. 327-343, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, H., Li, D., Li, T., Qiao, Q., Yang, J., Zhang, H.
AUTHOR FULL NAMES: Li, Hailong (55707730800); Li, Dihua (8895824200); Li, Ting (57198840596); Qiao, Qing (35293172300); Yang, Jian (57192462887); Zhang, Hemin (7409190854)
55707730800; 8895824200; 57198840596; 35293172300; 57192462887; 7409190854
Application of least-cost path model to identify a giant panda dispersal corridor network after the Wenchuan earthquake-Case study of Wolong Nature Reserve in China
(2010) Ecological Modelling, 221 (6), pp. 944 - 952, Cited 101 times.
DOI: 10.1016/j.ecolmodel.2009.12.006
https://www.scopus.com/inward/record.uri?eid=2-s2.0-75749136971&doi=10.1016%2Fj.ecolmodel.2009.12.006&partnerID=40&md5=9cb52280a44529bae23b33e51acc75d9

AFFILIATIONS: Graduate School of Landscape Architecture, Peking University, Beijing, China; China Conservation and Research Center for the Giant Panda, Sichuan, Sichuan, China
ABSTRACT: With growing levels of human-activity and frequent natural disturbances throughout the world, it is increasingly important that both research and management efforts take into account the widespread landscape fragmentation and its consequences for biodiversity conservation. The magnitude 5.12 Wenchuan earthquake in China caused dramatic impacts on giant panda (Ailuropoda melanoleuca) habitat in the nature reserves within Minshan and Qionglai mountains. With the combined stresses of the natural disaster and the extensive human activities during postquake reconstruction, giant panda habitat in this region may become more fragmented in the future. In order to preserve the giant panda population after the earthquake and protect the species against habitat fragmentation, this article explores a method of identifying giant panda migration corridors involving habitat suitability assessments and a least-cost path model. Focusing on postquake Wolong Nature Reserve, our results demonstrate that it contains 430.3 km2 of suitable habitat (21.1% of total area), 463.8 km2 of marginally suitable habitat (22.8%) and 1141.9 km2 of unsuitable habitat (50.1%). We further show that several giant panda dispersal corridors exist in the reserve, including four corridor groups that cross the provincial highway and five corridors that do not intersect areas of human activity. This study will contribute to management and conservation efforts in Wolong Nature Reserve and beyond after the Wenchuan earthquake. Crown Copyright © 2009.
AUTHOR KEYWORDS: Giant panda; GIS; Least-cost path; Nature reserve; Wildlife corridor
INDEX KEYWORDS: Biodiversity conservation; Combined stress; Dispersal corridors; Giant panda; Habitat fragmentation; Habitat suitability; Human activities; Landscape fragmentation; Least-cost paths; Management efforts; Natural disasters; Natural disturbance; Nature reserves; Suitable habitat; Wenchuan Earthquake; Wolong Nature Reserve; Animals; Biodiversity; Conservation; Costs; Earthquakes; Forestry; Geographic information systems; Ecology; bear; dispersal; environmental disturbance; GIS; habitat corridor; habitat fragmentation; habitat selection; human activity; migration route; natural disaster; nature reserve; path analysis; reconstruction; Sichuan earthquake 2008; species conservation; China; Sichuan; Ailuropoda; Ailuropoda melanoleuca
REFERENCES: Adriaensen, Frank, The application of 'least-cost' modelling as a functional landscape model, Landscape and Urban Planning, 64, 4, pp. 233-247, (2003); 
Fleury, Allison M., A framework for the design of wildlife conservation corridors with specific application to southwestern Ontario, Landscape and Urban Planning, 37, 3-4, pp. 163-186, (1997); 
Bunn, Andrew G., Landscape connectivity: A conservation application of graph theory, Journal of Environmental Management, 59, 4, pp. 265-278, (2000); 
Collinge, Sharon K., Effects of grassland fragmentation on insect species loss, colonization, and movement patterns, Ecology, 81, 8, pp. 2211-2226, (2000); 
Cushman, Samuel Alan, Effects of habitat loss and fragmentation on amphibians: A review and prospectus, Biological Conservation, 128, 2, pp. 231-240, (2006); 
Cushman, Samuel Alan, Use of empirically derived source-destination models to map regional conservation corridors, Conservation Biology, 23, 2, pp. 368-376, (2009); 
Davies, Zoe Georgina, Are hedgerows effective corridors between fragments of woodland habitat? An evidence-based approach, Landscape Ecology, 22, 3, pp. 333-351, (2007); 
Delin, Annika E., Effects of habitat fragmentation on Eurasian red squirrel (Sciurus vulgaris) in a forest landscape, Landscape Ecology, 14, 1, pp. 67-72, (1999); 
Environmental Systems Research Institute, (2014); 
Foltête, Jean Christophe, Cost distance defined by a topological function of landscape, Ecological Modelling, 210, 1-2, pp. 104-114, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, Y., Liu, R., Ge, Q.
AUTHOR FULL NAMES: Liu, Yang (56177421400); Liu, Ronggao (7404552200); Ge, Quansheng (55681862500)
56177421400; 7404552200; 55681862500
Evaluating the vegetation destruction and recovery of Wenchuan earthquake using MODIS data
(2010) Natural Hazards, 54 (3), pp. 851 - 862, Cited 50 times.
DOI: 10.1007/s11069-010-9511-z
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956175850&doi=10.1007%2Fs11069-010-9511-z&partnerID=40&md5=211bc83155e6f35313d8542b0c3fb813

AFFILIATIONS: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake in 2008 has led to huge damage to land surface vegetation in northwest Sichuan, one of the typical ecological fragile regions in China. In this paper, the vegetation degradation by the earthquake and its recovery after the disaster are evaluated from analysis of MODIS Gross Primary Productivity (GPP) time series products and other ancillary GIS data. The results suggest that local vegetation GPP after the earthquake in the heavy afflicted area has decreased by 22%. The local vegetation productivity in the heavy afflicted area had recovered to 84 and 87% after 1 and 2 months later. Since August 2008, the vegetation productivity has increased to a nearly normal level. © 2010 Springer Science+Business Media B.V.
AUTHOR KEYWORDS: MODIS; Vegetation degradation; Vegetation recovery; Wenchuan earthquake
INDEX KEYWORDS: GIS; land degradation; MODIS; primary production; remote sensing; Sichuan earthquake 2008; vegetation; China
REFERENCES: Arnone, John A., Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year, Nature, 455, 7211, pp. 383-386, (2008); 
Attiwill, Peter M., The disturbance of forest ecosystems: the ecological basis for conservative management, Forest Ecology and Management, 63, 2-3, pp. 247-300, (1994); 
Castilla, Juan Carlos, Earthquake-caused coastal uplift and its effects on rocky intertidal kelp communities, Science, 242, 4877, pp. 440-443, (1988); 
Chambers, Jeffrey Quintin, Hurricane Katrina's carbon footprint on U.S. Gulf Coast forests, Science, 318, 5853, (2007); 
Cochard, Roland, The 2004 tsunami in Aceh and Southern Thailand: A review on coastal ecosystems, wave hazards and vulnerability, Perspectives in Plant Ecology, Evolution and Systematics, 10, 1, pp. 3-40, (2008); 
Curran, Timothy J., Wood density predicts plant damage and vegetative recovery rates caused by cyclone disturbance in tropical rainforest tree species of North Queensland, Australia, Austral Ecology, 33, 4, pp. 442-450, (2008); 
Okay, Oya S., İzmit Bay (Turkey) ecosystem after Marmara Earthquake and subsequent refinery fire: The long-term data, Marine Pollution Bulletin, 42, 5, pp. 361-369, (2001); 
Phillips, Oliver L., Drought sensitivity of the amazon rainforest, Science, 323, 5919, pp. 1344-1347, (2009); 
Ren, Diandong, Mudslide-caused ecosystem degradation following Wenchuan earthquake 2008, Geophysical Research Letters, 36, 5, (2009); 
Reynolds, James F., Ecology: Global desertification: Building a science for dryland development, Science, 316, 5826, pp. 847-851, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, Y., Qu, C., Shan, X., Song, X., Zhang, G., Zhang, G.
AUTHOR FULL NAMES: Liu, Yunhua (26322999900); Qu, Chunyan (8204955900); Shan, Xianjian (7101712284); Song, Xiaogang (23006898300); Zhang, Guifang (55819500900); Zhang, Guohong (14010226900)
26322999900; 8204955900; 7101712284; 23006898300; 55819500900; 14010226900
Application of SAR data to damage identification of the Wenchuan earthquake
(2010) Acta Seismologica Sinica, 32 (2), pp. 214 - 223, Cited 14 times.
DOI: 10.3969/j.issn.0253-3782.2010.02.009
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953115292&doi=10.3969%2Fj.issn.0253-3782.2010.02.009&partnerID=40&md5=e5bf8d7589220b8a8ed325d2f9f9764d

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Optical remote sensing imagery in decision-making for disaster relief after the 2008 Wenchuan earthquake was highly restricted due to rainy weather. However, the SAR image with its all-weather characteristics emerged as a very important data source of remote sensing information needed for the relief work in early days. In this paper, we conducted damage identification for Yingxiu town and its adjacent areas with ENVISAT ASAR as data source, using amplitude of multi- temporal radar data and phase information. The ratio change detection using pre- and post-earthquake amplitude images yielded satisfying results in Yingxiu town and Zipingpu reservoir. After decorrelation analysis, the coherence images obtained by interferometric processing with phase information showed that the damage grade of a building is highly related to the variability index of coherence coefficient. In plain areas such as Dujiangyan, decorrelation is not as important as in mountainous areas, and ratio processing can eliminate some of the spatial decorrelation and other interference factors caused by system thermal noise, therefore, ratio change detection can be used as necessary supplement to amplitude imaging. This study shows that the combination of SAR amplitude imaging and interferometric coherence imaging can produce better results in earthquake disaster assessment. As the polarization radar technology becomes more and more sophisticated, the integrated SAR image information of multi- temporal amplitude and phase information will play an important role in decision-making for disaster relief.
AUTHOR KEYWORDS: Change detection; Damage identification; Decorrelation; Ratio image; SAR image; Wenchuan earthquake
INDEX KEYWORDS: disaster relief; earthquake damage; earthquake event; Envisat-1; interferometry; remote sensing; satellite data; satellite imagery; Sichuan earthquake 2008; synthetic aperture radar; China; Sichuan; Yingxiu; Zipingpu Reservoir
REFERENCES: undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
undefined, (2011); 
Proc 19th Asian Conf Remote Sens, (1998)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chen, G.-H.
AUTHOR FULL NAMES: Chen, Guihua (55733464100)
55733464100
Interpretational characteristics of optical remote sensing image for the co-seismic surface deformation of the 2008 Wenchuan earthquake and its relationship with imaging
(2010) Dizhen Dizhi, 32 (1), pp. 107 - 114, Cited 3 times.
DOI: 10.3969/j.issn.0253-4967.2010.01.011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953925052&doi=10.3969%2Fj.issn.0253-4967.2010.01.011&partnerID=40&md5=2f947dd10a737d34ec3ed010fb91fd3c

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Data from remote sensing played important roles in the rescue during the 2008 Wenchuan earthquake and reconstruction after the great disaster. It also has much realistic significance to implement a rapid interpretation and geological study from those data. Analysis was made on the characteristics of optical remote sensing image, such as shadows and texture, and geological and geomorphological features of the surface rupture from field investigation. The interpretation marks of the post-earthquake optical remote sensing image were concluded for the fault scarp of the great Wenchuan earthquake. Based on the optical imaging,the shadow forming and interpretation characteristics of different kinds of fault scarp were analyzed for the Wenchuan earthquake. The imaging time and the occurrence of fault scarps make a constraint on the forming of shadows and its interpretation for fault scarps. Analysis based on characteristics of imaging and rupture styles gives a new insight on the limitation in the application of remote sensing data of co-seismic surface deformation, and also a certain proposal for the emergency aerial remote sensing in the future.
AUTHOR KEYWORDS: Co-seismic surface deformation; Image interpretation; Optical remote sensing; Shadow; Wenchuan earthquake
INDEX KEYWORDS: data set; deformation mechanism; fault scarp; geomorphology; image analysis; remote sensing; Sichuan earthquake 2008
REFERENCES: Chen, Guihua, Application of digital aerophotogrammetry in active tectonics, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 31, 3, pp. 405-410, (2006); 
Chen, Guihua, Co-seismic slip and slip partitioning of multi-faults during the M s8.0 2008 Wenchuan earthquake, Acta Geophysica Sinica, 52, 5, pp. 1384-1394, (2009); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Remote Sensing Technology and Application, (2008); 
Journal of Remote Sensing, (2008); 
Introduction to Remote Sensing, (2001); 
Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
Journal of Remote Sensing, (2008); 
Fu, Bihong, A new fault rupture scenario for the 2003 Mw 6.6 Bam earthquake, SE Iran: Insights from the high-resolution QuickBird imagery and field observations, Journal of Geodynamics, 44, 3-5, pp. 160-172, (2007); 
Puymbroeck, Nadège Van, Measuring earthquakes from optical satellite images, Applied Optics, 39, 20, pp. 3486-3494, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

He, L., Miao, F., Tang, S.-Y.
AUTHOR FULL NAMES: He, Lei (57199954986); Miao, Fang (35768354700); Tang, Shuya (36139786300)
57199954986; 35768354700; 36139786300
Unmanned aerial vehicle remote sensing image and three-dimensional visualization applied in wenchuan earthquake
(2010) Wutan Huatan Jisuan Jishu, 32 (2), pp. 206 - 210, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952984665&partnerID=40&md5=f3acb68c6defcfaab8eb32b3dcf6fab1

AFFILIATIONS: College of Earth Sciences, Chengdu University of Technology, Chengdu, China; Institute of Relief Disaster Reduction, Earthquake Administration of Sichuan Province, Chengdu, Sichuan, China
ABSTRACT: This paper analyzes the geometric distortion principles of unmanned aerial vehicle (UAV) remote sensing image. After making the treatment of image stitching,geometric correction and ejaculation correction, the remote sensing data of UAV is integrated with high-precision DEM, then the three-dimensional virtual dynamic model of research landscape is built. Through analyzing three-dimensional visualization image, and combining with terrain data, it attains the high-precision, low altitude remote sensing disaster information and evaluates the disaster situation about the dammed lakes and associated hazards which caused by changes in topography such as landslides and avalanches in Cha-ping river of An county in Wen-chuan earthquake-hit area. The fact shows that in the disaster emergency and the complicated terrain situation, data collection and information extraction can depict the true environment exactly by using the technology of UAV low-altitude remote sensing and three-dimensional visualization. Then it can provide decision-makers with accurate, detailed, timely and first-hand information, and minimize the losses.
AUTHOR KEYWORDS: Remote sensing; Three-dimensional visualization; Unmanned aerial vehicle; Wenchuan earthquake
INDEX KEYWORDS: digital elevation model; image analysis; remote sensing; Sichuan earthquake 2008; terrain; three-dimensional modeling; topography; unmanned vehicle; visualization
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Du, J., Yang, Q.-H., Yan, J., Xue, C.-S.
AUTHOR FULL NAMES: Du, Jun (57198429346); Yang, Qinghua (57199915660); Yan, Jia (57199790191); Xue, Chongsheng (25631325800)
57198429346; 57199915660; 57199790191; 25631325800
Hazard evaluation of secondary geological disaster based on GIS and information value method
(2010) Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 35 (2), pp. 324 - 330, Cited 12 times.
DOI: 10.3799/dqkx.2010.034
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951484496&doi=10.3799%2Fdqkx.2010.034&partnerID=40&md5=5b79781a1f6e82c97360f99296e772e0

AFFILIATIONS: China University of Geosciences, Wuhan, Hubei, China; Department of Resource and Environmental Science, Guangxi Normal University, Guilin, Guangxi, China
ABSTRACT: 5·12 Wenchuan earthquake triggered a series of secondary landslides, landslides, debris flows, and other geological disasters, which posed a major threat to peoples lives and property and socio-economic development. For risk assessment of secondary geological hazards in the area, the worst-hit Wenchuan County was selected as the study area. Remote sensing and geographic information technology spatial data management and spatial data analysis platform have been applied to gain relevant information, to make a correlative analysis between secondary geological disasters in the study area and the topography, lithology, hydrology, earthquake rupture. In addition, information value method has been used to evaluate the risk of secondary geological disasters. It is found that the area of high risk, moderate risk and low risk is 1130.196 km2, 1739.584 km2, 1213.219 km2 respectively. The distribution of secondary geology disaster triggered by earthquake has the colony type distribution characteristic featured with a concentrated development of geological disasters in the fault zone and the nearby regions and a quick decay and the fragmentary distribution farther away form the fault zone areas. Analysis also shows that risk of secondary geological disaster in north and east areas of Wenchuan is heavy, while that in the west and south areas is light, which is coincident with the reality. The study further demonstrates that the geographical information system combined with information value model can quickly and effectively evaluate the spatial distribution and risk of secondary geological disasters.
AUTHOR KEYWORDS: Geographical information system (GIS); Hazard evaluation; Information value method; Secondary geological disaster; Wenchuan
INDEX KEYWORDS: Correlative analysis; Debris flows; Distribution characteristics; Earthquake rupture; Fault zone; Geographic information technologies; Geographical Information System; Geographical information systems; Geological disaster; Geological hazards; Geology disaster; Hazard evaluation; Information value; Socio-economic development; Spatial data analysis; Spatial data management; Spatial distribution; Study areas; Wenchuan Earthquake; Debris; Disasters; Earthquakes; Economics; Geographic information systems; Hazards; Information systems; Landslides; Lithology; Remote sensing; Risk management; Water; Risk assessment
REFERENCES: Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Carrara, Alberto, Multivariate models for landslide hazard evaluation, Journal of the International Association for Mathematical Geology, 15, 3, pp. 403-426, (1983); 
Carrara, Alberto, GIS techniques and statistical models in evaluating landslide hazard, Earth Surface Processes and Landforms, 16, 5, pp. 427-445, (1991); 
Acta Scientiarum Naturalium Universitatis Pekinensis on Line First, (2008); 
Greco, Roberto, Logistic Regression analysis in the evaluation of mass movements susceptibility: The Aspromonte case study, Calabria, Italy, Engineering Geology, 89, 1-2, pp. 47-66, (2007); 
Earth Science Frontiers, (2009); 
Journal of Catastrophology, (2003); 
Lin, Meei Ling, A GIS-based potential analysis of the landslides induced by the Chi-Chi earthquake, Engineering Geology, 71, 1-2, pp. 63-77, (2004); 
Journal of Geomechanics, (2006); 
Journal of Natural Disasters, (1997)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tang, C., Qi, X., Ding, J., Yang, T.-P., Luo, Z.-F.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Qi, Xin (35932814100); Ding, Jun (55463437900); Yang, Taiping (36023087500); Luo, Zhenfu (55460272200)
35932953300; 35932814100; 55463437900; 36023087500; 55460272200
Dynamic analysis on rainfall-induced landslide activity in high seismic intensity areas of the Wenchuan earthquake using remote sensing image
(2010) Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 35 (2), pp. 317 - 323, Cited 17 times.
DOI: 10.3799/dqkx.2010.033
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951467636&doi=10.3799%2Fdqkx.2010.033&partnerID=40&md5=b902cad03a356888896a4cf9d6b7a191

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: A catastrophic earthquake always intensively disturbs ground strata and affects the slope stability for a long period of time. The Wenchuan earthquake not only triggered serious coseismic landslides, but also extensively accelerated the landslide activity during the subsequent heavy rains. Based on the interpretation of high resolution of aerial photographs, 1214 landslides are identified, most of which are shallow landslides, rock falls, and rock slides triggered in the high seismic intensity region of the Wenchuan earthquake near the Beichuan City and along the valleys of the Jianjiang River. A heavy rainfall on 24 September, 2008 triggered more landslides and debris flows in the central part of the area affected by the Wenchuan earthquake. The accumulated precipitation triggering landslides and debris flows is 272.7 mm in two days, while the rainfall amount and intensity recorded in this area have a return period of about 20 years. 878 new landslides in the study area of 340 km2 are identified by interpretation of SPOT images. To understand the impact of the Wenchuan earthquake on the landslide occurrence due to subsequent heavy rainfall, this study mainly focuses on the variations in the the density of coseismic landslides and following rainfall-induced landslides through aerial photographs and SPOT images. Comparison of aerial photographs taken on 18 May, 2008 (after the "5·12" Wenchuan earthquake) and SPOT images taken on 14 October, 2008 (after "9·24" rainstorm event) indicates that the landslide number in the study area increases by 42%, while landslide area increases by 46.6%, which shows the great impact of the heavy rainfall after the earthquake on the development and activity of landslides in the study area. The above study results also show that the Wenchuan earthquake affected area is particularly susceptible to landslides and debris flow occurrence after extreme rainfall events.
AUTHOR KEYWORDS: Heavy rainfall; Intepretation; Landslide activity; Remote sensing image; Wenchuan earthquake
INDEX KEYWORDS: Aerial Photographs; Affected area; Catastrophic earthquake; Debris flows; Extreme rainfall; Heavy rainfall; Heavy rains; High resolution; Rainfall induced landslides; Remote sensing images; Return periods; Rock slides; Rockfalls; Seismic intensity; Shallow landslide; SPOT image; Study areas; Wenchuan Earthquake; Debris; Dynamic analysis; Earthquakes; Image reconstruction; Landslides; Photographic equipment; Photography; Rain; Remote sensing; Rock bursts; Storms; Slope protection
REFERENCES: Chen, Hongey, Relationship between earthquake disturbance, tropical rainstorms and debris movement: An overview from Taiwan, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 161-186, (2009); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Huang, Runqiu, Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China, Science in China, Series E: Technological Sciences, 52, 4, pp. 810-819, (2009); 
Kamp, Ulrich, GIS-based landslide susceptibility mapping for the 2005 Kashmir earthquake region, Geomorphology, 101, 4, pp. 631-642, (2008); 
Lin, Ching-Wee Weei, Impacts of the Chi-Chi earthquake on subsequent rainfall-induced landslides in central Taiwan, Engineering Geology, 86, 2-3, pp. 87-101, (2006); 
Lin, Ching-Wee Weei, Impact of Chi-Chi earthquake on the occurrence of landslides and debris flows: Example from the Chenyulan River watershed, Nantou, Taiwan, Engineering Geology, 71, 1-2, pp. 49-61, (2004); 
Mahdavifar, Mohammad Reza, Landslides triggered by the Avaj, Iran earthquake of June 22, 2002, Engineering Geology, 86, 2-3, pp. 166-182, (2006); 
Tang, Chuan, Rainfall-triggered debris flows following the Wenchuan earthquake, Bulletin of Engineering Geology and the Environment, 68, 2, pp. 187-194, (2009); 
Yin, Yueping, Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China, Landslides, 6, 2, pp. 139-152, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhao, F.-J., Cai, S., Chen, X.
AUTHOR FULL NAMES: Zhao, Fujun (55353392600); Cai, Shan (36169801900); Chen, Xi (36996415500)
55353392600; 36169801900; 36996415500
Application of rapid seismic damage assessment based on remote sensing to Wenchuan earthquake
(2010) Journal of Natural Disasters, 19 (1), pp. 1 - 7, Cited 11 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953848552&partnerID=40&md5=2c50bbd46216ca48a807ca7850f9da65

AFFILIATIONS: Institute of Engineering Mechanics, China Earthquake Administration, Beijing, China; Heilongjiang University of Science and Technology, Harbin, Heilongjiang, China; Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China
ABSTRACT: Wenchuan M8. 0 earthquake occurred on May 12, 2008 in Sichuan Province. Under the circumstance of destructive land transportation and communication disruption, remote sensing technology became the crucial measure of acquiring seismic disaster information, earthquake emergency response and post-earthquake rapid assessment. This paper presents the procedure of earthquake emergency response and post-earthquake rapid assessment using high-resolution remote sensing images. The rapid assessment process involves with many technologies, including rapid remote sensing image correction, image enhancement, seismic damage information extraction, rapid seismic disaster information assessment and web publication of assessment results. Seismic damage information of Wenchuan earthquake was acquired accurately by utilizing the seismic damage recognition and rapid assessment technology of remote sensing data. Wenchuan earthquake intensity distribution map based on remote sensing data is in accordance with that based on ground investigation which is published by China Earthquake Administration. It is the very first time that accurate overall disaster information distribution and preliminary seismic damage assessment results are provided within the 2-6 hours after seismic damage remote sensing images acquired. Seismic damage recognition and rapid assessment technology based on remote sensing play an important role in Wenchuan earthquake disaster information extraction, emergency response and post-earthquake rapid assessment.
INDEX KEYWORDS: disaster management; earthquake damage; earthquake intensity; information technology; remote sensing; seismicity; Sichuan earthquake 2008; China; Sichuan
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
13th World Conference on Earthquake Engineering, (2004); 
Yamazaki, Fumio, Earthquake damage detection using high-resolution satellite images, International Geoscience and Remote Sensing Symposium (IGARSS), 4, pp. 2280-2283, (2004); 
Proceedings of 3rd International Workshop Remote Sensing for Post Disaster Response C, (2005); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Deng, M., Liu, Z., Miao, Q., Pan, Q., Zhang, M., Chiu, L.S., Di, L., Kempler, S., Milich, L., Rui, H., Tan, J., Tang, Y., Teng, W., Yang, R., Yu, H., Yang, C.
AUTHOR FULL NAMES: Deng, Meixia (7202079408); Liu, Zhong (36801924300); Miao, Qianjun (8277262000); Pan, Qisheng (8540192400); Zhang, Ming (55512996800); Chiu, Longsang (7103129103); Di, Liping (7006684098); Kempler, Steven J. (6603318496); Milich, Lenard (57053725000); Rui, Hualan (7005244633); Tan, Jiqiang (57204096495); Tang, Yanli (57204098956); Teng, William L. (36060454900); Yang, Ruixin (7403924488); Yu, Hongwei (57204091101); Yang, Chaowei Phil (36018685200)
7202079408; 36801924300; 8277262000; 8540192400; 55512996800; 7103129103; 7006684098; 6603318496; 57053725000; 7005244633; 57204096495; 57204098956; 36060454900; 7403924488; 57204091101; 36018685200
Other applications
(2010), pp. 351 - 413, Cited 0 times.
DOI: 10.1201/b10280
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054449774&doi=10.1201%2Fb10280&partnerID=40&md5=237ff5d6383327b8c95012654512992f

AFFILIATIONS: Center for Spatial Information Science and Systems, George Mason University, Fairfax, VA, United States; Center for Earth Observing and Space Research, George Mason University, Fairfax, VA, United States; Heilongjiang Bureau of Surveying and Mapping, Harbin, China; Department of Urban Planning and Environmental Policy, Texas Southern University, Houston, TX, United States; School of Architecture, The University of Texas at Austin, Austin, TX, United States; Department of Geography and Geoinformation Science, George Mason University, Fairfax, VA, United States; Shatin, Chinese University of Hong Kong, Hong Kong, Hong Kong; NASA Goddard Space Flight Center, Greenbelt, MD, United States; The University of Arizona, Tucson, AZ, United States; ADNET Systems, Inc., Bethesda, MD, United States; Wuhan University, Wuhan, Hubei, China; Heilongjiang Bureau of Surveying and Mapping, Harbin, China; Wyle Information Systems, McLean, VA, United States; Center for Intelligent Spatial Computing, George Mason University, Fairfax, VA, United States
ABSTRACT: This chapter follows the previous chapter on the specific usage of geoinformation and geoinformation science and technology beyond environmental and related applications. First, an application example of EOSDIS (refer Chapter 4) for a global agriculture information system with online real-time precipitation data is introduced. Next, Geographic Information Systems for Transportation (GIS-T), which was developed for solving transportation related problems reflecting federal legislations, was discussed, and the GIS-T applications in various projects and applications including location-based services (LBS) were reviewed. After the GIS-T section, GIS as a decision support tool in an urban planning was reviewed with case studies for the advanced storm water treatment plans in Los Angeles. Then, GI Science, in particular, GIS, and remote-sensing applications in emergency response cases were summarized and demonstrated with application to the 2008 8.0 Ms Wenchuan earthquake. Finally, the focus of the chapter is moved to data-intensive Earth Science (ES) education, issues associated with it, and a solution, the GeoBrain system, another NASA sponsored project. © 2010 by Taylor & Francis Group, LLC.
INDEX KEYWORDS: Decision support systems; Earthquakes; Environmental technology; Information systems; Information use; Location based services; NASA; Remote sensing; Telecommunication services; Water treatment; Application examples; Decision support tools; Emergency response; Federal legislations; Geographic information systems for transportations; Remote sensing applications; Science and Technology; Wenchuan Earthquake; Geographic information systems
REFERENCES: Acker, James G., Online analysis enhances use of NASA Earth Science Data, Eos, 88, 2, pp. 14-17, (2007); 
GIS Spatial Analysis Modeling, (2005); 
Blueprint for Change Report from the National Conference on the Revolution in Earth and Space Science Education, (2001); 
Planning Support Systems, (2000); 
Urban Land Use Planning, (2006); 
Berrick, Stephen W., Giovanni: A web service workflow-based data visualization and analysis System, IEEE Transactions on Geoscience and Remote Sensing, 47, 1, pp. 106-113, (2009); 
Earthzine, (2008); 
Bosilovich, Michael G., Evaluation of global precipitation in reanalyses, Journal of Applied Meteorology and Climatology, 47, 9, pp. 2279-2299, (2008); 
Costs of Storm Water Treatment for Los Angeles Npdes Permit Area, (1998); 
Airline Data and Statistics, (2009)
PUBLISHER: CRC Press
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Guo, H., Liu, L., Lei, L., Wu, Y., Li, L., Zhang, B., Zuo, Z., Li, Z.
AUTHOR FULL NAMES: Guo, Huadong (56415384100); Liu, Liangyun (8600097300); Lei, Liping (57203377707); Wu, Yanhong (57221579071); Li, Liwei (55730921800); Zhang, Bing (8835983800); Zuo, Zhengli (15129287700); Li, Zhen (57184557300)
56415384100; 8600097300; 57203377707; 57221579071; 55730921800; 8835983800; 15129287700; 57184557300
Dynamic analysis of the Wenchuan Earthquake disaster and reconstruction with 3-year remote sensing data
(2010) International Journal of Digital Earth, 3 (4), pp. 355 - 364, Cited 19 times.
DOI: 10.1080/17538947.2010.532632
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960918963&doi=10.1080%2F17538947.2010.532632&partnerID=40&md5=4db927a835938521d09ce683ccfb12dd

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: Earth observation is an effective technique that plays an important role in earthquake damage reduction and reconstruction. This paper introduces the results of dynamic analysis on monitoring and assessing heavily impacted areas affected by the Wenchuan Earthquake using remote sensing data acquired in the past 3 years from 2008 to 2010. Immediately after the disaster on 12 May 2008, the Chinese Academy of Sciences launched a project entitled 'Wenchuan Earthquake Disasters Monitoring and Assessment Using Remote Sensing Technology.' More than 400 images from 17 satellites and 20.2TB airborne remote sensing data were acquired to facilitate quick monitoring and evaluation of severely damaged areas in 14 counties. Results of the image analyses were forwarded on a timely basis to assist with consultative service and decisionmaking support. In subsequent years, in order to monitor the process of environmental restoration and reconstruction, airborne optical remote sensing images covering most of the severely damaged areas were again acquired in May 2009 and April 2010. These images were analyzed and compared along with images from 2008. Results were useful in support of further work on environmental protection and reconstruction in earthquake-damaged areas. Three typical areas were selected for illustrative purposes including Tangjiashan Barrier Lake, Beichuan County, and counties of Yingxiu and the new Beichuan. These results well demonstrate the importance and effectiveness of the utility of earth observation for disaster mitigation and reconstruction. © 2010 Taylor & Francis.
AUTHOR KEYWORDS: Disaster mitigation; Earth observation; Reconstruction; Wenchuan Earthquake
INDEX KEYWORDS: Disasters; Earthquakes; Image analysis; Image reconstruction; Observatories; Chinese Academy of Sciences; Disaster mitigation; Earth observations; Environmental restoration; Monitoring and assessment; Monitoring and evaluations; Remote sensing technology; Wenchuan Earthquake; Remote sensing; data set; disaster management; earthquake event; reconstruction; remote sensing; satellite imagery; Beichuan; China; Sichuan; Tangjiashan Lake; Yingxiu
REFERENCES: Ajami, Sima, The role of earthquake information management systems (EIMSs) in reducing destruction: A comparative study of Japan, Turkey and Iran, Disaster Prevention and Management, 18, 2, pp. 150-161, (2009); 
Ehrlich, Daniele, Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data, International Journal of Digital Earth, 2, 4, pp. 309-326, (2009); 
Ge, Yong, Image interpretation and statistical analysis of vegetation damage caused by the Wenchuan earthquake and related secondary disasters, Journal of Applied Remote Sensing, 3, 1, (2009); 
Guo, Huadong, Understanding global natural disasters and the role of earth observation, International Journal of Digital Earth, 3, 3, pp. 221-230, (2010); 
Guo, Huadong, Damage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data, International Journal of Remote Sensing, 31, 13, pp. 3427-3433, (2010); 
Huang, Xiaoxia, Remote sensing analysis of the distribution and genetic mechanisms of transportation network damage caused by the Wenchuan earthquake, Journal of Applied Remote Sensing, 3, 1, (2009); 
Lei, Liping, Assessment of spatial variation of the collapsed houses in Wenchuan earthquake with aerial images, Journal of Applied Remote Sensing, 3, 1, (2009); 
Liou, Yueian, Use of high-resolution formosat-2 satellite images for post-earthquake disaster assessment: A study following the 12 may 2008 Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3355-3368, (2010); 
Liu, Liangyun, Monitoring and assessment of barrier lakes formed after the Wenchuan earthquake based on multitemporal remote sensing data, Journal of Applied Remote Sensing, 3, 1, (2009); 
Ouyang, Zhiyun, Impact assessment of Wenchuan Earthquake on ecosystems, Shengtai Xuebao, 28, 12, pp. 5801-5809, (2008)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, H., Zhai, Y., Chen, C.
AUTHOR FULL NAMES: Wang, Huaifeng (37123159000); Zhai, Yongmei (42361750700); Chen, Xi (57192468503)
37123159000; 42361750700; 57192468503
Technology of change detection for the semi-automatic rapid evaluation of seismic damage of buildings
(2010) Proceedings - 2010 International Conference on Intelligent System Design and Engineering Application, ISDEA 2010, 2, art. no. 5743478, pp. 548 - 552, Cited 1 times.
DOI: 10.1109/ISDEA.2010.398
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955773711&doi=10.1109%2FISDEA.2010.398&partnerID=40&md5=d2f57af49ef166b27e9167b3ebfd90a9

AFFILIATIONS: School of Civil Engineering, Tongji University, Shanghai, China
ABSTRACT: In this paper, we aim at exploring method and process of semi-automatic evaluation of damage of buildings with computer and high resolution remote-sensing images. Change detection of remote-sensing images from IKONOS with a resolution of a meter prior to and after the earthquake was executed and the semi-automatically rapid evaluation of damage of buildings was studied both by case of north area of Dujiang Dam city in Wenchuan Earthquake. The change detection included difference method, ratio method, relevance method and false color composite. This paper proposed the process of semi-automatic evaluation. ENVI was secondarily developed for the suitability of semi-automatic evaluation. At last this concluded the collapse ratio of test area of 15.15%. In comparison with actual result and traditional measures, this method is much more convenient, rapid, credible, and feasible. © 2010 IEEE.
AUTHOR KEYWORDS: Change detection; ENVI; High resolution; Rapid evaluation of seismic damage; Remote-sensing image; Secondary development; Semi-automatic; Wenchuan earthquake
INDEX KEYWORDS: Automation; Damage detection; Earthquakes; Intelligent systems; Remote sensing; Change detection; ENVI; High resolution; Remote sensing images; Secondary development; Seismic damage; Semi-automatics; Wenchuan Earthquake; Structural analysis
REFERENCES: Yin, Dong, A new method of automatic building detection based on multi-characteristic fusion from remote sensing images, Proceedings of SPIE - The International Society for Optical Engineering, 6044, (2005); 
Li, Haiyue, A new solution of automatic building extraction in remote sensing images, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3790-3793, (2006); 
Liu, Zhengjun, Building extraction from high resolution satellite imagery based on multi-scale image segmentation and model matching, (2008); 
Miura, Hiroyuki, Identification of damaged areas due to the 2006 Central Java, Indonesia earthquake using satellite optical images, (2007); 
Liu, Bingbing, Texture retrieval using grey-level co-occurrence matrix for Ikonos panchromatic images of earthquake in Java 2006, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 286-289, (2007); 
Miura, Hiroyuki, Updating GIS building inventory data using high-resolution satellite images for earthquake damage assessment: Application to Metro Manila, Philippines, Earthquake Spectra, 22, 1, pp. 151-168, (2006); 
Chen, Zhiqiang, Urban damage estimation using statistical processing of satellite images, Journal of Computing in Civil Engineering, 21, 3, pp. 187-199, (2007); 
Journal of Remote Sensing, (2008); 
Wang, Xiaoqing, Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 174-181, (2009)
PUBLISHER: IEEE Computer Society help@computer.org
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, X., Dou, A., Ding, X.
AUTHOR FULL NAMES: Wang, Xiaoqing (35148757500); Dou, Aixia (55761756200); Ding, Xiang (16635732900)
35148757500; 55761756200; 16635732900
Study on quantitative earthquake damage of Dujiangyan city, caused by 2008 MS=8.0 Wenchuan, China earthquake based on aerial imagery
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5653233, pp. 2743 - 2746, Cited 5 times.
DOI: 10.1109/IGARSS.2010.5653233
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650923303&doi=10.1109%2FIGARSS.2010.5653233&partnerID=40&md5=902f3ebab7daf72d9ce46fc075eff4c9

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China
ABSTRACT: The paper introduces quantitative earthquake damage estimation method based on remote sensing data. The quantitative remote sensing seismic damage index based on building damage extracted from the aerial image of Dujiangyan city proper, southwest China's Sichuan province, which acquired after 2008 Ms=8.0 Wenchuan earthquake. The actual seismic damage indices were determined by the ground-based investigation in the city proper. Then their quantitative relationship was established. The results indicate that it is possible to build quantitative model of remote sensing seismic damage, which will enhance significantly the practicality applying the remote sensing in emergency acquisition and analysis of seismic disaster. © 2010 IEEE.
AUTHOR KEYWORDS: Building damage; Quantitative study; Remote sensing; Seismic damage index; Wenchuan earthquake
INDEX KEYWORDS: Aerial photography; Antennas; Damage detection; Earthquake effects; Structural analysis; Building damage; Earthquake damages; Quantitative modeling; Quantitative remote sensing; Quantitative study; Remote sensing data; Seismic damage indices; Wenchuan Earthquake; Remote sensing
REFERENCES: Technology for Earthquake Disaster Prevention, (2008); 
Earthquake, (2009); 
Atlas of Remote Sensing Interpretation of Building Damage in Wenchuan Earthquake, (2010)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Dong, Y., Li, Q., Dou, A., Wang, X.
AUTHOR FULL NAMES: Dong, Yanfang (8213169000); Li, Qi (55547832500); Dou, Aixia (55761756200); Wang, Xiaoqing (35148757500)
8213169000; 55547832500; 55761756200; 35148757500
Disaster mapping from medium spatial resolution ALOS PALSAR images
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5652182, pp. 2167 - 2170, Cited 3 times.
DOI: 10.1109/IGARSS.2010.5652182
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650921505&doi=10.1109%2FIGARSS.2010.5652182&partnerID=40&md5=31ab32163e42b0bc784b711646ca99d2

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
ABSTRACT: All-day and all-weather Synthetic Aperture Radar (SAR) can measure both intensity and phase of the reflected signal. The backscattering coefficients measured by SAR reflect the backscatter characteristics of surface targets. Changes happened to a target's surface roughness, geometric and structural characteristics will result in the change of its backscattering intensity recorded in SAR image. The 2008 Wenchuan earthquake, China have caused widely distributed geological disasters, such as landslides, mudfloods and barrier lakes, which resulted in the difference between pre- and post-earthquake SAR images. Comparison between the pre- and post-earthquake SAR intensity images will reveal the damage information. In this study, PALSAR Level 1.0 data acquired for the Wenchuan earthquake were used to analyze the geological disasters. Results show that medium spatial resolution SAR data, such as 10 m resolution ALOS PALSAR data, especially when both pre- and post-earthquake images are available, are useful in revealing the distribution of landslides and barrier lakes. © 2010 IEEE.
AUTHOR KEYWORDS: Change detection; Disaster mapping; Earthquake; PALSAR; SAR
INDEX KEYWORDS: Backscattering; Disasters; Earthquakes; Geology; Image resolution; Lakes; Landslides; Mapping; Remote sensing; Surface roughness; Synthetic aperture radar; 2008 wenchuan earthquakes; Backscattering coefficients; Backscattering intensity; Change detection; Geological disaster; PALSAR; Structural characteristics; Wenchuan Earthquake; Radar imaging
REFERENCES: Massonnet, Didier, The displacement field of the Landers earthquake mapped by radar interferometry, Nature, 364, 6433, pp. 138-142, (1993); 
Ozawa, Shinzaburo, Synthetic aperture radar interferogram of the 1995 Kobe earthquake and its geodetic inversion, Geophysical Research Letters, 24, 18, pp. 2327-2330, (1997); 
Jers 1 Science Program 99 Pi Reports Global Forest Monitoring and SAR Interometry, (1999); 
Peltzer, Gilles, Evidence of nonlinear elasticity of the crust from the Mw7.6 Manyi (Tibet) earthquake, Science, 286, 5438, pp. 272-276, (1999); 
Stramondo, Salvatore, InSAR surface displacement field and fault modelling for the 2003 Bam earthquake (southeastern Iran), Journal of Geodynamics, 40, 2-3, pp. 347-353, (2005); 
Fielding, Eric Jameson, Shallow fault-zone dilatancy recovery after the 2003 Bam earthquake in Iran, Nature, 458, 7234, pp. 64-68, (2009); 
Alos User Handbook, (2007); 
Proceedings of 4th International Workshop on Remote Sensing for Post Disaster Response, (2006); 
International Journal of Navigation and Observation, (2008); 
Alos Palsar Data Processing Using Gamma Software, (2006)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Cui, X., Zeng, Q., Liang, C., Jiao, J.
AUTHOR FULL NAMES: Cui, Xi'Ai (36959335600); Zeng, Qiming (12781852000); Liang, Cunren (36816132500); Jiao, Jian (57205785313)
36959335600; 12781852000; 36816132500; 57205785313
Investigating co-seismic deformation of the 2008 Wenchuan earthquake with ALOS SCANSAR interferometric observations
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5651079, pp. 4612 - 4615, Cited 0 times.
DOI: 10.1109/IGARSS.2010.5651079
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650885836&doi=10.1109%2FIGARSS.2010.5651079&partnerID=40&md5=8e04828cf5abcdec99724079d419dc9f

AFFILIATIONS: Peking University, Beijing, China; Key Lab of Spatial Information Integration and Engineering Application of Beijing, Beijing, China
ABSTRACT: On May 12th, 2008, a destructive earthquake of magnitude 8.0 struck Wenchuan. The seismic region is located at the transition zone between Qinghai-Tibet Plateau and the Sichuan Basin, which has a complex geological tectonic background. In this paper, we intend to investigate the Wenchuan earthquake using the Differential Interferometric SAR(D-InSAR) technique. Due to the large scale of the crustal deformation affected by the disastrous earthquake, SCANSAR images show more advantages than conventional strip-map mode images. And taking account the vegetation conditions, the L band images are suitable than the C band images for our study. Therefore, we choose to use ALOS SCANSAR interferometric observations to obtain a preliminary co-seismic displacement filed of the Wenchuan earthquake. © 2010 IEEE.
AUTHOR KEYWORDS: ALOS; Co-seismic displacement filed; D-InSAR; SCANSAR; Wenchuan earthquake
INDEX KEYWORDS: Deformation; Geology; Interferometry; Motion compensation; Remote sensing; Synthetic aperture radar; ALOS; Co-seismic displacement; D-inSAR; Scansar; Wenchuan Earthquake; Earthquakes
REFERENCES: Qu, Chunyan, Analysis on the characteristics of InSAR coseismic deformation of the Ms 8.0 Wenchuan earthquake, Dizhen Dizhi, 30, 4, pp. 1076-1084, (2008); 
Liu, Guoxiang, Mapping surface deformation related to the 2008 wenchuan earthquake with alos In SAR and GPS observations, Proceedings of SPIE - The International Society for Optical Engineering, 7471, (2009); 
Journal of Geodesy and Geodynamics, (2009); 
Journal of Geodynamics, (2009); 
Jin, Yaqiu, Automatic detection of terrain surface changes after Wenchuan earthquake, May 2008, From ALOS SAR images using 2EM-MRF method, IEEE Geoscience and Remote Sensing Letters, 6, 2, pp. 344-348, (2009); 
Hu, Yunfeng, ALOS PALSAR differential interferometry for mapping co-seismic deformation of the 2008 Wenchuan earthquake, China, Proceedings of SPIE - The International Society for Optical Engineering, 7471, (2009); 
Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, J., Zhang, X., Wan, W., Shen, X., Ouyang, X., Shan, X.
AUTHOR FULL NAMES: Liu, Jing (59157699000); Zhang, Xuemin (55715192900); Wan, Weixing (55489430100); Shen, Xuhui (7402721678); Ouyang, Xinyang Yan (35216316400); Shan, Xianjian (7101712284)
59157699000; 55715192900; 55489430100; 7402721678; 35216316400; 7101712284
Study on the electronic density perturbation detected by DEMETER satellite before Wenchuan Earthquake
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5650344, pp. 3382 - 3385, Cited 4 times.
DOI: 10.1109/IGARSS.2010.5650344
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650878699&doi=10.1109%2FIGARSS.2010.5650344&partnerID=40&md5=1c8c4a8e33d9ea422efba3a8c2ce52a5

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: We used slope analysis and sliding Median method to study the electron density data observed by Langmuir probe of DEMETER satellite since April 25, 2008 to May 11, 2008, and obvious perturbation phenomena of electron density(N<inf>e</inf>) in ionosphere were found before Wenchuan earthquake on May 12, 2008. Considering the geomagnetic disturbances, there were some abnormal information in different degrees on May 3, 4, 7, 9, 10, 11 respectively. Furthermore, on May 3 and May 4, along with the change of electron density, electron temperature was also elevated at the latitude of 10∼30°N. Also on May 7, not only electron density increased, but also ion density did above the epicentral area. © 2010 IEEE.
AUTHOR KEYWORDS: DEMETER Satellite; Electron density perturbation; Seismic anomaly; Wenchuan earthquake
INDEX KEYWORDS: Electron density measurement; Electron temperature; Electrons; Geomagnetism; Ionosphere; Remote sensing; Satellites; DEMETER satellites; Density perturbation; Electronic density; Epicentral area; Geomagnetic disturbance; Seismic anomaly; Slope analysis; Wenchuan Earthquake; Earthquakes
REFERENCES: Sauvaud, Jean André, High-energy electron detection onboard DEMETER: The IDP spectrometer, description and first results on the inner belt, Planetary and Space Science, 54, 5, pp. 502-511, (2006); 
Berthelier, Jean Jacques, ICE, the electric field experiment on DEMETER, Planetary and Space Science, 54, 5, pp. 456-471, (2006); 
Berthelier, Jean Jacques, IAP, the thermal plasma analyzer on DEMETER, Planetary and Space Science, 54, 5, pp. 487-501, (2006); 
Lebreton, Jean Pierre, The ISL Langmuir probe experiment processing onboard DEMETER: Scientific objectives, description and first results, Planetary and Space Science, 54, 5, pp. 472-486, (2006); 
Parrot, Michell J.M., The magnetic field experiment IMSC and its data processing onboard DEMETER: Scientific objectives, description and first results, Planetary and Space Science, 54, 5, pp. 441-455, (2006); 
Parrot, Michell J.M., Examples of unusual ionospheric observations made by the DEMETER satellite over seismic regions, Physics and Chemistry of the Earth, 31, 4-9, pp. 486-495, (2006); 
Parrot, Michell J.M., VLF emissions associated with earthquakes and observed in the ionosphere and the magnetosphere, Physics of the Earth and Planetary Interiors, 57, 1-2, pp. 86-99, (1989); 
Ann Geophys, (1993); 
Pulinets, Sergey Alexander, Spatial-temporal characteristics of large scale disturbances of electron density observed in the ionospheric F-region before strong earthquakes, Cosmic Research, 41, 3, pp. 221-230, (2003); 
Chmyrev, Vitaly M., Observation by space-borne detectors of electric fields and hydromagnetic waves in the ionosphere over an earthquake centre, Physics of the Earth and Planetary Interiors, 57, 1-2, pp. 110-114, (1989)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tian, B., Wang, L., Koike, K., Fan, J.
AUTHOR FULL NAMES: Tian, Bingwei (24376970400); Wang, Ling (36816548400); Koike, Katsuaki (57219664247); Fan, Jianrong (8727506000)
24376970400; 36816548400; 57219664247; 8727506000
Analysis and assessment of earthquake-induced secondary mountain disaster chains based on multi-platform remote sensing
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5648963, pp. 1214 - 1217, Cited 4 times.
DOI: 10.1109/IGARSS.2010.5648963
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650868855&doi=10.1109%2FIGARSS.2010.5648963&partnerID=40&md5=f5f70537a2ae5fe75b1003c84b6bdb42

AFFILIATIONS: Graduate School of Science and Technology, Kumamoto University, Kumamoto, Kumamoto, Japan; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan earthquake was a destructive earthquake that measured at 7.9 Mw occurred at 14:28:01.42 CST on May 12, 2008 in Sichuan province of China, which induced large quantities of secondary mountain disasters such as collapse, landslides, debris flows and barrier lakes. These disasters occurred and more seriously formed disaster chains causing great destruction, and costing many lives after both the earthquake and thousands of aftershocks. To gather a proper understanding of disaster and formed chains, it is necessary to consider disaster chains for the dilapidated areas. In this paper, we focused on dynamically monitoring and analyzing the disaster chains patterns, spatial distribution and trying to choose the best time to cut the chains for preventing the prospective disasters. The multi-sensor remote sensing imageries before and after earthquakes were used to discover the disasters induced by earthquake and aftershocks, then to acquire the distributions of these disasters and rapidly analysis and assess the disaster chains to prevent possible disaster consequences. © 2010 IEEE.
AUTHOR KEYWORDS: China earthquake; Disaster chains; Multi-Platform; Remote Sensing; Secondary mountain disaster
INDEX KEYWORDS: Disasters; Earthquakes; Landforms; Remote sensing; Barrier lakes; Debris flows; Disaster chains; Multi sensor; Multi-platform; Remote sensing imagery; Sichuan province; Wenchuan Earthquake; Disaster prevention
REFERENCES: Magnitude 7 9 Eastern Sichuan, (2008); 
Fan, Jianrong, Rapid assessment of secondary disasters induced by the wenchuan earthquake, Computing in Science and Engineering, 12, 1, pp. 10-19, (2010); 
Di, Baofeng, Quantifying the spatial distribution of soil mass wasting processes after the 2008 earthquake in Wenchuan, China. A case study of the Longmenshan area, Remote Sensing of Environment, 114, 4, pp. 761-771, (2010); 
Xu, Qiang, Landslide dams triggered by the Wenchuan Earthquake, Sichuan Province, south west China, Bulletin of Engineering Geology and the Environment, 68, 3, pp. 373-386, (2009); 
Natural Hazards, (2008); 
Shen, Zheng-Kang, Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake, Nature Geoscience, 2, 10, pp. 718-724, (2009); 
Chen, Xingzhang, Characteristics and risk analysis of Qinglin debris flow induced by "5.12" Wenchuan earthquake in Beichuan County, Sichuan, China, International Geoscience and Remote Sensing Symposium (IGARSS), 2, pp. II408-II411, (2009); 
Journal of Mountain Science, (2008); 
Cui, Peng, The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation, Landslides, 6, 3, pp. 209-223, (2009)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tao, S., Hu, D., Xue, D., Lian, J.
AUTHOR FULL NAMES: Tao, Shu (36683220000); Hu, Deyong (22233958700); Xue, Dongjian (36816510500); Lian, Jian (35119297500)
36683220000; 22233958700; 36816510500; 35119297500
Landslide susceptibility assessment in active seismic zone - with a case study of Wenchuan
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5650140, pp. 1218 - 1221, Cited 0 times.
DOI: 10.1109/IGARSS.2010.5650140
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650858797&doi=10.1109%2FIGARSS.2010.5650140&partnerID=40&md5=bc6b10eff264130b5468effe96ab65b6

AFFILIATIONS: Capital Normal University, Beijing, Beijing, China; State Key Laboratory of Geo-Hazard Prevention and Earth Environment Protection, Chengdu, Sichuan, China
ABSTRACT: The Ms 8.0 Wenchuan earthquake, occurred on 12 May 2008 in Sichuan Province, caused enormous property damages and human casualties. In order to remove threat from the secondary landslides effectively, this study used techniques of remote sensing and GIS to generate susceptibility map, taking the case of Wenchuan County. The factors controlling landslides are obtained from geological maps and DEM, including relief amplitude, lithology, seismic intensity, distance to faults and rivers. Furthermore, this paper presents quantitative analysis of relationship between number and area of the landslides and factors in the study area. Based on this analysis, the probability predicting the possibility of landslide occurrence has been calculated applying information value method and logistic regression separately. The study zone was ultimately categorized into five classes, specifically, "extremely low", "low", "moderate", "high" and "very high". These results have been proved to reflect closely the spatial distributions of landslides in the study area. © 2010 IEEE.
AUTHOR KEYWORDS: Landslide; Remote sensing; Susceptibility assessment
INDEX KEYWORDS: Earthquakes; Landslides; Lithology; Logistic regression; Geological map; Information value; Landslide susceptibility assessments; Property damage; Remote sensing and GIS; Seismic intensity; Sichuan province; Wenchuan Earthquake; Remote sensing
REFERENCES: Journal of Remote Sensing, (2003); 
Yin, Jinhui, The characteristics of the landslides triggered by the Wenchuan Ms 8.0 earthquake from Anxian to Beichuan, Journal of Asian Earth Sciences, 37, 5-6, pp. 452-459, (2010); 
Karsli, Fevzi, Effects of land-use changes on landslides in a landslide-prone area (Ardesen, Rize, NE Turkey), Environmental Monitoring and Assessment, 156, 1-4, pp. 241-255, (2009); 
Chen, Xiaoli, Triggering factors susceptibility of earthquake-induced landslides in 1976 Longling Earthquake, Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis, 45, 1, pp. 104-109, (2009); 
Jade, Sridevi, Statistical models for slope instability classification, Engineering Geology, 36, 1-2, pp. 91-98, (1993)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Song, X., Shan, X., Qu, C., Han, Y., Zhang, G., Guo, L., Zhang, G.
AUTHOR FULL NAMES: Song, Xiaogang (23006898300); Shan, Xianjian (7101712284); Qu, Chunyan (8204955900); Han, Yufei (59793434700); Zhang, Guifang (55819500900); Guo, Limin (26030934000); Zhang, Guohong (14010226900)
23006898300; 7101712284; 8204955900; 59793434700; 55819500900; 26030934000; 14010226900
The characteristics of post-seismic surface deformation of the Wenchuan MS8.0 earthquake from InSAR
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5652899, pp. 1210 - 1213, Cited 2 times.
DOI: 10.1109/IGARSS.2010.5652899
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650856824&doi=10.1109%2FIGARSS.2010.5652899&partnerID=40&md5=8e8f177520da1e79dd190d86b5a69f5a

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The D-InSAR technology is used to acquire four strips of post-seismic surface deformation of Wenchuan M8 earthquake of 2008 from the ALOS/PALSAR satellite data of Japan. The result covers the Yingxiu town, Wenchuan, Shifang, Maoxian county, Beichuan, Pingwu and Qingchuan county in Sichuan Province. Some postdeformation characteristics is showed in the final result. Around Yingxiu town, the epicenter of main shock, a area of uplift is present with small amplitude 0-5cm at the northern wall of the causative fault, while relative subsidence took place with the amplitude 0-15cm on the other wall. Near Shifang county, there are slightly arranged concentric fringes, reflecting another subsidence area with amplitude 0-20cm. Around the Beichuan and Anxian county, there exists a relatively small uplift of an strip area with 0-5cm along the causative fault on its both side. A small area of dense concentric fringes(indicated by a rectangle box) appeared in 30km northeast of Qingchuan, which coincide with the locations of the aftershocks Ms6.1 of 5 Aug. 2008. On the lower wall, we can see another large uplift area of sparse concentric fringes located in more than 100km southeast of Qingchuan, because it is far from the causative fault, it's impossible so large deformation took place, and it should attribute to atmospheric component. the deformation characteristics of the whole area is complicated generally. © 2010 IEEE.
AUTHOR KEYWORDS: D-InSAR; Earthquake activity; Post-seismic deformation; Wenchuan earthquake
INDEX KEYWORDS: Deformation; Faulting; Motion compensation; Remote sensing; Subsidence; Atmospheric components; D-inSAR; Deformation Characteristics; Earthquake activity; Seismic deformation; Sichuan province; Surface deformation; Wenchuan Earthquake; Earthquakes
REFERENCES: Peltzer, Gilles, Postseismic rebound in fault step-overs caused by pore fluid flow, Science, 273, 5279, pp. 1202-1204, (1996); 
Reilinger, Robert E., Coseismic and postseismic fault slip for the 17 august 1999, M = 7.5, Izmit, Turkey earthquake, Science, 289, 5484, pp. 1519-1524, (2000); 
Jacobs, Allison M., The 1999 (Mw 7.1) Hector Mine, California, earthquake: Near-field postseismic deformation from ERS interferometry, Bulletin of the Seismological Society of America, 92, 4, pp. 1433-1442, (2002); 
Shan, Xianjian, Coseismic surface deformation caused by the Wenchuan Ms8. 0 earthquake from InSAR data analysis, Acta Geophysica Sinica, 52, 2, pp. 496-504, (2009); 
Acta Geological Sinica, (2007); 
Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, L., Li, Z., Zhang, R., Ma, J., Lei, L.
AUTHOR FULL NAMES: Li, Liwei (55730921800); Li, Zuchuan (35213457300); Zhang, Rui (59278353800); Ma, Jianwen (7406200149); Lei, Liping (57203377707)
55730921800; 35213457300; 59278353800; 7406200149; 57203377707
Collapsed buildings extraction using morphological profiles and texture statistics - A case study in the 5.12 wenchuan earthquake
(2010) International Geoscience and Remote Sensing Symposium (IGARSS), art. no. 5652333, pp. 2000 - 2002, Cited 7 times.
DOI: 10.1109/IGARSS.2010.5652333
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650854653&doi=10.1109%2FIGARSS.2010.5652333&partnerID=40&md5=dae5c80787ca39c5d7857cfb16615fc7

AFFILIATIONS: Key Laboratory of Digital Earth Science, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Department of Geography and Geoinformation Science, George Mason University, Fairfax, VA, United States
ABSTRACT: The paper proposes a method of collapsed buildings extraction from post-earthquake airborne images. Firstly, training and validation samples are selected, and feature extraction is conducted through morphological profiles and texture statistics based on gray-level co-occurrence matrix, and then support vector machine classifier is used to extract collapsed buildings. An initial experiment is carried out on images acquired after the 5.12 wenchuan earthquake. Results show that morphological features and texture features are complementary to each other in describing collapsed buildings; a reasonable extraction result is achieved based on these two kinds of features. However, due to the complexity of collapsed buildings in airborne images, more work is needed such as introducing more features and also a proper feature reduction method. © 2010 IEEE.
AUTHOR KEYWORDS: Airborne images; Collapsed buildings; DMP; GLCM; SVM
INDEX KEYWORDS: Earthquakes; Extraction; Remote sensing; Support vector machines; Textures; Airborne images; Collapsed buildings; GLCM; Gray level co-occurrence matrix; Morphological features; Morphological profile; Support vector machine classifiers; Wenchuan Earthquake; Buildings
REFERENCES: Turker, Mustafa, Automatic detection of earthquake-damaged buildings using DEMs created from pre- and post-earthquake stereo aerial photographs, International Journal of Remote Sensing, 26, 4, pp. 823-832, (2005); 
Turker, Mustafa, Building-based damage detection due to earthquake using the watershed segmentation of the post-event aerial images, International Journal of Remote Sensing, 29, 11, pp. 3073-3089, (2008); 
Benediktsson, Jón Atli, Classification and feature extraction for remote sensing images from urban areas based on morphological transformations, IEEE Transactions on Geoscience and Remote Sensing, 41, 9 PART I, pp. 1940-1949, (2003); 
Benediktsson, Jón Atli, Classification of hyperspectral data from urban areas based on extended morphological profiles, IEEE Transactions on Geoscience and Remote Sensing, 43, 3, pp. 480-491, (2005); 
Pesaresi, Martino, A new approach for the morphological segmentation of high-resolution satellite imagery, IEEE Transactions on Geoscience and Remote Sensing, 39, 2, pp. 309-320, (2001); 
Fauvel, Mathieu, Spectral and spatial classification of hyperspectral data using SVMs and morphological profiles, IEEE Transactions on Geoscience and Remote Sensing, 46, 11, pp. 3804-3814, (2008); 
Chanussot, Jocelyn, Classification of remote sensing images from urban areas using a fuzzy possibilistic model, IEEE Geoscience and Remote Sensing Letters, 3, 1, pp. 40-44, (2006); 
Haralick, Robert Martin, Textural Features for Image Classification, IEEE Transactions on Systems, Man and Cybernetics, SMC-3, 6, pp. 610-621, (1973); 
Pesaresi, Martino, Monitoring settlement dynamics by anisotropic textural analysis of panchromatic VHR data, (2007); 
Libsvm A Library for Support Vector Machines, (2001)
PUBLISHER: Institute of Electrical and Electronics Engineers Inc.
CONFERENCE NAME: 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CONFERENCE DATE: 2010-07-25 through 2010-07-30
CONFERENCE LOCATION: Honolulu
CONFERENCE CODE: 83256
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tian, S.-J., Kong, J.-M., Li, X., Fayou, F.-Y., Cun, Y.
AUTHOR FULL NAMES: Tian, Shujun (36609420200); Kong, Jiming (55793897000); Li, Xiuzhen (56237865700); Fayou, A. (36607707800); Cun, Yun (36607582000)
36609420200; 55793897000; 56237865700; 36607707800; 36607582000
Notice of Retraction: A reliability analysis of multimode system applying on critical evaluation of landslides triggered by Wenchuan earthquake
(2010), 2, art. no. 5567409, pp. 547 - 550, Cited 0 times.
DOI: 10.1109/ESIAT.2010.5567409
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958000075&doi=10.1109%2FESIAT.2010.5567409&partnerID=40&md5=1e7c8a28f3a4b78c98fba05b5672ff95

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Understanding where earthquake-induced landslides are most likely to occur is important for reducing damage and loss of life in future earthquakes. The paper took Wenchuan earthquake as an example, and formed the multimode parallel system composed of the geologic body and three key factors firstly, and applied the means of reliability analysis of multimode system with matrix on the research of critical evaluation of earthquake-induced landslides secondly. At last, not only the primary and secondary risky grades could be obtained for every county, but also the value of reliability of each county in different risky grades could be computed in Wenchuan earthquake. This method is significant for further study on critical evaluation of earthquake-induced landslides. ©2010 IEEE.
AUTHOR KEYWORDS: Critical statement; Multimode; Reliability analysis; Remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Earthquakes; Environmental technology; Landslides; Remote sensing; Critical evaluation; Critical statement; Earthquake-induced landslides; Loss of life; Multimode system; Multimodes; Parallel system; Wenchuan Earthquake; Reliability analysis
REFERENCES: Kong, Jiming, Typical case study on the development characteristics of fragmentation-sliding seismic landslide, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 119-124, (2009); 
Journal of Engineering Geology, (2009); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Aleotti, Pietro, Landslide hazard assessment: Summary review and new perspectives, Bulletin of Engineering Geology and the Environment, 58, 1, pp. 21-44, (1999); 
Tan, X., Reliability analysis on a slope with several slide surfaces, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 20, 6, pp. 822-825, (2001); 
Whitman, Robert V., Evaluating calculated risk in geotechnical engineering, Journal of Geotechcnical Engineering, 110, 2, pp. 143-188, (1984); 
Romeo, Roberto Walter, Seismically induced landslide displacements: A predictive model, Engineering Geology, 58, 3-4, pp. 337-351, (2000); 
Hassan, Ahmed M., Search algorithm for minimum reliability index of earth slopes, Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 125, 4, pp. 301-308, (1999); 
Barlow, Richard E., COHERENT SYSTEMS WITH MULTI-STATE COMPONENTS., Mathematics of Operations Research, 3, 4, pp. 275-281, (1978); 
Chowdhury, Robin N., Rational polynomial technique in slope-reliability analysis, Journal of Geotechcnical Engineering, 119, 12, pp. 1910-1928, (1993)
PUBLISHER: IEEE Computer Society
DOCUMENT TYPE: Retracted
PUBLICATION STAGE: Final

Zhang, L., Kang, Z., Li, J., Yang, L.
AUTHOR FULL NAMES: Zhang, Liqiang (36064917000); Kang, Zhizhong (14063370300); Li, Jonathan M. (57235557700); Yang, Ling (55732973700)
36064917000; 14063370300; 57235557700; 55732973700
Web-based terrain and vector maps visualization for Wenchuan earthquake
(2010) International Journal of Applied Earth Observation and Geoinformation, 12 (6), pp. 439 - 447, Cited 7 times.
DOI: 10.1016/j.jag.2010.01.001
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957360228&doi=10.1016%2Fj.jag.2010.01.001&partnerID=40&md5=39f7ec07c9d86370be2d28fe7e53f7e5

AFFILIATIONS: Beijing Normal University, Beijing, China; Department of Geodesy and Geomatics, School of Land Science and Technology, Beijing, China; Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada
ABSTRACT: This paper presents a Web-based three-dimensional Geographic Information System (3DGIS) for Wenchuan earthquake disaster assessment. With the help of information technology resources, geoscientists are in a position to learn more about the structure of the earthquake in efficient ways. Due to huge spatial datasets of Wenchuan, China and narrow network bandwidth, general-purpose applications are difficult to transmit and visualize these datasets on the network. The application aims to interactively represent and transfer large spatial objects of Wenchuan County, China, as well as for dynamically rendering them in networking environments. Level-of-detail (LOD) terrain models and vector maps are created, and the server-client architecture is presented. The application provides an effective way for powerful access and manipulation of large-scale Wenchuan datasets. © 2010 Elsevier B.V.
AUTHOR KEYWORDS: Progressive transmission; Visualization; Wenchuan earthquake
INDEX KEYWORDS: data set; GIS; hazard assessment; map; Sichuan earthquake 2008; visualization; World Wide Web; China; Sichuan; Wenchuan
REFERENCES: Schneider, Bengt Olaf, Adaptive framework for 3D graphics over networks, Computers and Graphics, 23, 6, pp. 867-874, (1999); 
Buttenfield, Barbara Pfeil, Transmitting vector geospatial data across the internet, Lecture Notes in Computer Science, 2478, pp. 51-64, (2002); 
Coors, Volker, 3D-GIS in networking environments, Computers, Environment and Urban Systems, 27, 4, pp. 345-357, (2003); 
Chim, Jimmy H.P., CyberWalk: A Web-Based Distributed Virtual Walkthrough Environment, IEEE Transactions on Multimedia, 5, 4, pp. 503-515, (2003); 
Cignoni, Paolo, Planet-Sized Batched Dynamic Adaptive Meshes (P-BDAM), Proceedings of the IEEE Visualization Conference, pp. 147-154, (2003); 
Canadian Cartographer, (1973); 
Estkowski, Regina, Simplifying a polygonal subdivision while keeping it simple, Proceedings of the Annual Symposium on Computational Geometry, pp. 40-49, (2001); 
Hoff, Kenneth E., Fast computation of generalized Voronoi diagrams using graphics hardware, pp. 277-286, (1999); 
Huang, Bo, An integration of GIS, virtual reality and the internet for visualization, analysis and exploration of spatial data, International Journal of Geographical Information Science, 15, 5, pp. 439-456, (2001); 
Level of Detail for 3D Graphics, (2002)
PUBLISHER: Elsevier B.V.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, K., Ng, A.H.-Y., Ge, L., Dong, Y., Rizos, C.
AUTHOR FULL NAMES: Zhang, Kui (59874961700); Ng, Alex Hay-Man (23492847800); Ge, Linlin (23392861200); Dong, Yusen (23026974800); Rizos, Chris (56247563100)
59874961700; 23492847800; 23392861200; 23026974800; 56247563100
Erratum to Multi-path PALSAR interferometric observations of the 2008 magnitude 8.0 Wenchuan Earthquake (International Journal of Remote Sensing, 31, 13, (3449-3463), 10.1080/01431161003727804)
(2010) International Journal of Remote Sensing, 31 (16), pp. 4505, Cited 0 times.
DOI: 10.1080/01431161.2010.514752
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956620902&doi=10.1080%2F01431161.2010.514752&partnerID=40&md5=472ef0f5860660c5ff89a7bdf48ef8c6

PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Erratum
PUBLICATION STAGE: Final

Yao, Q.-L., Qiang, Z.-J.
AUTHOR FULL NAMES: Yao, Qinglin (7202586012); Qiang, Zuji (7005448508)
7202586012; 7005448508
The elliptic stress thermal field prior to MS 7.3 Yutian, and MS 8.0 Wenchuan earthquakes in China in 2008
(2010) Natural Hazards, 54 (2), pp. 307 - 322, Cited 5 times.
DOI: 10.1007/s11069-009-9470-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77955768431&doi=10.1007%2Fs11069-009-9470-4&partnerID=40&md5=7d8b7610cd1168d64a993568441ecd26

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Some thermal infrared anomalies on the earth's surface are omens of stronger earthquakes, and have a close relationship with the stress fields. Satellite-based remote sensing is an important means of monitoring and researching this phenomenon. The M<inf>S</inf> 7.3 Yutian earthquake in Xinjiang on March 20, 2008 and the M<inf>S</inf> 8.0 Wenchuan earthquake in Sichuan on May 12, 2008 both happened in the Qinghai-Tibet Plateau, China, with epicenters more than 2,000 km apart. The two events, however, were a production of an identical stress field in different developing phases. Prior to the M<inf>S</inf> 7.3 Yutian earthquake, a large-scale abnormal temperature rise not only covered the epicenter of the forthcoming Yutian earthquake, but also arrived at the epicenter of the farther Wenchuan earthquake. The revolving elliptic stress thermal field reflecting earthquake gestation moved from the west to the east of the Wenchuan epicenter at the time of the Yutian event occurrence. The rotation of the calefactive ellipses and belts prior to the two strong events agreed with the stress field, the focal mechanism, and modality and mechanism property of the ruptures in the crustal surface induced by the events. It should be a reflection of the partial mantle uprush and rotation. © 2009 Springer Science+Business Media B.V.
AUTHOR KEYWORDS: Earthquake; Fault; Infrared; Remote sensing; Stress; Wenchuan; Yutian
INDEX KEYWORDS: earthquake epicenter; earthquake intensity; earthquake magnitude; earthquake mechanism; earthquake rupture; focal mechanism; infrared imagery; remote sensing; research work; satellite data; seismic reflection; Sichuan earthquake 2008; stress field; China; Qinghai-Xizang Plateau; Sichuan; Xinjiang Uygur; Yutian
REFERENCES: Avouac, Jean Philippe, Kinematic model of active deformation in central Asia, Geophysical Research Letters, 20, 10, pp. 895-898, (1993); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chin Sci Bull, (2006); 
Report on the Great Wenchuan Earthquake Source of May 12 2008, (2008); 
Seismology and Geology, (1994); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Dey, Sagnik, Surface latent heat flux as an earthquake precursor, Natural Hazards and Earth System Sciences, 3, 6, pp. 749-755, (2003); 
Filizzola, Carolina, Robust satellite techniques for seismically active areas monitoring: A sensitivity analysis on September 7, 1999 Athens's earthquake, Physics and Chemistry of the Earth, 29, 4-9, pp. 517-527, (2004); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhao, B., Wang, M., Yu, T., Xu, G., Wan, W., Liu, L.
AUTHOR FULL NAMES: Zhao, Biqiang (7403059548); Wang, Min (55553729886); Yu, Tao (56421020200); Xu, Guirong (20434940900); Wan, Weixing (55489430100); Liu, Libo (7405258672)
7403059548; 55553729886; 56421020200; 20434940900; 55489430100; 7405258672
Ionospheric total electron content variations prior to the 2008 Wenchuan Earthquake
(2010) International Journal of Remote Sensing, 31 (13), pp. 3545 - 3557, Cited 40 times.
DOI: 10.1080/01431161003727622
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954852266&doi=10.1080%2F01431161003727622&partnerID=40&md5=4c001831d10c5c9f8e6fa1b2f4073377

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; China Earthquake Administration, Beijing, China; National Center for Space Weather, China Meteorological Administration, Beijing, China; Institute of Heavy Rain, China Meteorological Administration, Beijing, China
ABSTRACT: On 12 May 2008 at 06:28 UT a major earthquake of magnitude 8.0 struck Wenchuan County (31.0° N, 103.4° E) in southwest China. Ionospheric total electron content (TEC) values, derived from a network of 58 global positioning system (GPS) receivers over China and nearby countries, were used to investigate the ionospheric precursor of the great earthquake. The observations revealed that there was an anomalous enhancement in TEC (100% increase on the 15-day median) during the afternoon-evening sector on 9 May 2008 while geomagnetic conditions were quiet (K<inf>p</inf> ≤ 2). The TEC variations on the west side and east side of the epicentre show large dissimilarity on 9 May 2008. By constructing the longitude/latitude TEC map, the distribution of the region predominated by increased TEC values was shown to be localized at longitudes 90-130° E. Our results suggest that this abnormal enhancement was most possibly a seismo-ionospheric signature. © 2010 Taylor & Francis.
INDEX KEYWORDS: Geomagnetism; Global positioning system; Ionosphere; 2008 wenchuan earthquakes; Epicentre; Geomagnetic conditions; Global positioning system receivers; Great earthquake; Ionospheric precursors; Ionospheric total electron content; Southwest China; Earthquakes; earthquake epicenter; earthquake magnitude; electron density; GPS; ionosphere; remote sensing; Sichuan earthquake 2008; spatial distribution; spatial variation; China; Sichuan; Wenchuan
REFERENCES: Afraimovich, Edward L., TEC anomalies - Local TEC changes prior to earthquakes or TEC response to solar and geomagnetic activity changes?, Earth, Planets and Space, 60, 9, pp. 961-966, (2008); 
J Geophys Res, (1995); 
Chuo, Yujung, The ionospheric perturbations prior to the Chi-Chi and Chia-Yi earthquakes, Journal of Geodynamics, 33, 4-5, pp. 509-517, (2002); 
Dabas, R. S., Ionospheric pre-cursors observed over low latitudes during some of the recent major earthquakes, Journal of Atmospheric and Solar-Terrestrial Physics, 69, 15, pp. 1813-1824, (2007); 
Dautermann, Thomas, Investigation of ionospheric electron content variations before earthquakes in southern California, 2003-2004, Journal of Geophysical Research: Solid Earth, 112, 2, (2007); 
Ionospheric Radio, (1990); 
Dobrovolsky, I. P., Estimation of the size of earthquake preparation zones, Pure and Applied Geophysics, 117, 5, pp. 1025-1044, (1979); 
Freund, Friedemann T., Time-resolved study of charge generation and propagation in igneous rocks, Journal of Geophysical Research: Solid Earth, 105, B5, pp. 11001-11019, (2000); 
Jakowski, Norbert, Relationships between GPS-signal propagation errors and EISCAT observations, Annales Geophysicae, 14, 12, pp. 1429-1436, (1996); 
Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes, (1999)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Kakinami, Y., Liu, J.-Y., Tsai, L.-C., Oyama, K.-I.
AUTHOR FULL NAMES: Kakinami, Yoshihiro (15062658200); Liu, Jann Yenq Tiger (8577721900); Tsai, Lungchih (7203034098); Oyama, Kohichiro (35389408800)
15062658200; 8577721900; 7203034098; 35389408800
Ionospheric electron content anomalies detected by a FORMOSAT-3/COSMIC empirical model before and after the Wenchuan Earthquake
(2010) International Journal of Remote Sensing, 31 (13), pp. 3571 - 3578, Cited 43 times.
DOI: 10.1080/01431161003727788
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954847418&doi=10.1080%2F01431161003727788&partnerID=40&md5=66912be5ffe073e2594d0f3f5f37490b

AFFILIATIONS: Institute of Space Science, National Central University, Taoyuan, Taiwan; Center for Space and Remote Sensing Research, National Central University, Taoyuan, Taiwan
ABSTRACT: An empirical model of ionospheric electron content (IEC), based on FORMOSAT3/COSMIC (F3/C) data, is constructed in order to detect pre-earthquake anomalies. The empirical model provides IEC with four parameters of local time, season, longitude and latitude. For the first time we try to detect anomalies in the F3/C IEC by comparing the model values with observations during the 12 May 2008 Wenchuan Earthquake period. It is found that around the epicentre an IEC enhancement appears on day 3 (9 May) and sequential IEC reductions occur on day 6 to day 1 (6 to 11 May) before the earthquake. © 2010 Taylor & Francis.
INDEX KEYWORDS: Remote sensing; Sensors; Earthquake anomalies; Empirical model; Epicentre; FORMOSAT-3/COSMIC; Ionospheric electron; Local time; Wenchuan Earthquake; Earthquakes; earthquake epicenter; electron density; empirical analysis; ionosphere; numerical model; remote sensing; satellite data; Sichuan earthquake 2008
REFERENCES: Heki, Kousuke, Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array, Earth and Planetary Science Letters, 236, 3-4, pp. 845-855, (2005); 
Jhuang, Hau Kun, Seismo-ionospheric anomalies of the GPS-TEC appear before the 12 May 2008 magnitude 8.0 Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3579-3587, (2010); 
Kutiev, Ivan S., Topside sounder model of scale height and transition height characteristics of the ionosphere, Advances in Space Research, 39, 5, pp. 759-766, (2007); 
Liu, Jann Yenq Tiger, Seismo-ionospheric signatures prior to M ≥ 6.0 Taiwan earthquakes, Geophysical Research Letters, 27, 19, pp. 3113-3116, (2000); 
Liu, Jann Yenq Tiger, Variations of ionospheric total electron content during the Chi-Chi earthquake, Geophysical Research Letters, 28, 7, pp. 1383-1386, (2001); 
Liu, Jann Yenq Tiger, Pre-earthquake ionospheric anomalies registered by continuous GPS TEC measurements, Annales Geophysicae, 22, 5, pp. 1585-1593, (2004); 
Liu, Jann Yenq Tiger, A statistical investigation of preearthquake ionospheric anomaly, Journal of Geophysical Research: Space Physics, 111, 5, (2006); 
Liu, Jann Yenq Tiger, Seismoionospheric GPS total electron content anomalies observed. before the 12 May 2008 Mw7.9 Wenchuan earthquake, Journal of Geophysical Research: Space Physics, 114, 4, (2009); 
Seismo Electromagnetics and Related Phenomena History and Latest Results, (2008); 
Molchanov, Oleg A., Global diagnostics of the ionospheric perturbations related to the seismic activity using the VLF radio signals collected on the DEMETER satellite, Natural Hazards and Earth System Sciences, 6, 5, pp. 745-753, (2006)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, M., Cao, C., Zhang, H., Guo, J., Nakane, K., He, Q., Guo, J., Chang, C., Bao, Y., Gao, M., Li, X.
AUTHOR FULL NAMES: Xu, Min C. (36071644600); Cao, Chunxiang (14031191400); Zhang, Hao J. (9238972800); Guo, Jianping (57224911813); Nakane, Kaneyuki (7101972259); He, Qisheng (35423878400); Guo, Jianghong (57212984789); Chang, Chaoyi (36182703200); Bao, Yunfei (55083178100); Gao, Mengxu (36021003600); Li, Xiaowen (24755928100)
36071644600; 14031191400; 9238972800; 57224911813; 7101972259; 35423878400; 57212984789; 36182703200; 55083178100; 36021003600; 24755928100
Change detection of an earthquake-induced barrier lake based on remote sensing image classification
(2010) International Journal of Remote Sensing, 31 (13), pp. 3521 - 3534, Cited 36 times.
DOI: 10.1080/01431161003727689
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954845211&doi=10.1080%2F01431161003727689&partnerID=40&md5=2da5c9be12918bfac6feeb30a62e413c

AFFILIATIONS: Beijing Normal University, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Centre for Atmosphere Watch and Services, China Meteorological Administration, Beijing, China; Department of Environmental Studies, Hiroshima University, Higashihiroshima, Hiroshima, Japan
ABSTRACT: The earthquake-induced barrier lakes that are caused by landslides are at risk of bursting after excessive rainfall, and they are a serious threat to the surrounding residents. This paper proposes a change detection approach of the barrier lake using the method of post-classification comparison combined with background subtraction. The case studied in the paper is the detection of the Tangjiashan barrier lake, which is one of the largest lakes induced by the Wenchuan Earthquake on 12 May 2008. Both the pre- (31 March 2007) and post-earthquake (16 May 2008) images of the Advanced Land Observing Satellite (ALOS) Advanced Visible and Near Infrared Radiometer type 2 (AVINER-2) were collected in the paper. The results show that the river widened through the Zhangping area, increasing from 90 m pre-earthquake to 545 m post-earthquake, and the surface area of the barrier lake increased from 0.945 km2 to 1.471 km2. © 2010 Taylor & Francis.
INDEX KEYWORDS: Image classification; Infrared devices; Lakes; Remote sensing; Advanced land observing satellites; Background subtraction; Barrier lakes; Change detection; Post-classification comparisons; Remote sensing image classification; Visible and near infrared radiometers; Wenchuan Earthquake; Earthquakes; AVNIR; detection method; image classification; imaging method; remote sensing; satellite imagery; Sichuan earthquake 2008; Beichuan; China; Sichuan; Tangjiashan Lake
REFERENCES: Bignami, Christian, Comparing and combining the capability of detecting earthquake damages in urban areas using SAR and optical data, International Geoscience and Remote Sensing Symposium (IGARSS), 1, pp. 55-58, (2004); 
Bitelli, Gabriele, Image change detection on urban area: The earthquake case, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 35, pp. 692-697, (2004); 
Chen, Yenliang, Using decision trees to summarize associative classification rules, Expert Systems with Applications, 36, 2 PART 1, pp. 2338-2351, (2009); 
Cheng, Genwei, Outburst risk of barrier lakes in Sichuan, China, Journal of Mountain Science, 5, 3, pp. 189-193, (2008); 
Dey, Sagnik, Surface latent heat flux as an earthquake precursor, Natural Hazards and Earth System Sciences, 3, 6, pp. 749-755, (2003); 
Fung, T., Application of principal components analysis to change detection, Photogrammetric Engineering and Remote Sensing, 53, 12, pp. 1649-1658, (1987); 
Ganas, Athanassios, The 7 September 1999 Athens 5.9 Ms earthquake: Remote sensing and digital elevation model inputs towards identifying the seismic fault, International Journal of Remote Sensing, 22, 1, pp. 191-196, (2001); 
Garay, Michael J., Multi-angle Imaging SpectroRadiometer (MISR) time-lapse imagery of tsunami waves from the 26 December 2004 Sumatra-Andaman earthquake, Remote Sensing of Environment, 107, 1-2, pp. 256-263, (2007); 
Howarth, Philip J., Procedures for change detection using landsat digital data, International Journal of Remote Sensing, 2, 3, pp. 277-291, (1981); 
Igarashi, Tamotsu, ALOS mission requirement and sensor specifications, Advances in Space Research, 28, 1, pp. 127-131, (2001)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liou, L., Kar, S.K., Chang, L.
AUTHOR FULL NAMES: Liou, Yueian (7102949705); Kar, Sanjib Kumar (56241347800); Chang, Liyu (7404275596)
7102949705; 56241347800; 7404275596
Use of high-resolution formosat-2 satellite images for post-earthquake disaster assessment: A study following the 12 may 2008 Wenchuan Earthquake
(2010) International Journal of Remote Sensing, 31 (13), pp. 3355 - 3368, Cited 56 times.
DOI: 10.1080/01431161003727655
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954843362&doi=10.1080%2F01431161003727655&partnerID=40&md5=45074f7dcfe66b9fb001e2ce6e4a3ba4

AFFILIATIONS: Center for Space and Remote Sensing Research, National Central University, Taoyuan, Taiwan
ABSTRACT: A large earthquake struck Wenchuan County, China on 12 May 2008 and is one of the most severe natural disasters of recent decades that has changed the entire landscape of Wenchuan County. This paper presents a satellite image analysis of the landslide following the Wenchuan earthquake and its consequences, and demonstrates how remote sensing techniques can be used for civilian crisis- management purpose and disaster relief. Real-time high resolution 2-dimensional and 3-dimensional information on structural deformation of land areas, directional changes of rivers, creation of new lakes, and the water levels of rivers and lakes in the earthquake affected area have been provided using the FORMOSAT-2 and Satellite pour l'Observation de la Terre (SPOT)-5 satellite images. Satellite images taken before and after the 12 May 2008 Wenchuan Earthquake have been used for landslide investigation. Possible flooding and rupture of natural dams during the post-earthquake period have been indicated through the analysis of 3- dimensional images of FORMOSAT-2. Some rescue methods have been suggested for immediate recovery of the bereaved persons and to locate the corresponding area accurately using remote sensing techniques. Some precautionary measures have also been suggested to avoid further destruction. Comparisons of panchromatic and multispectral images of FORMOSAT-2 for a particular region have been made to quantify the location accuracy. Our results show that the real-time high-spatial resolution FORMOSAT-2 satellite images could be an efficient and useful resource for decision-makers to prepare rescue and post-event recovery operation plans, especially for some isolated earthquake areas where damage distribution is often very uneven and hard to reach in time. © 2010 Taylor & Francis.
INDEX KEYWORDS: Decision making; Disaster prevention; Disasters; Image analysis; Lakes; Landslides; Remote sensing; Satellite imagery; Water levels; 3-dimensional images; High spatial resolution; Multispectral images; Precautionary measures; Remote sensing techniques; Satellite image analysis; Satellite Pour l'Observation de la Terre; Structural deformation; Earthquakes; accuracy assessment; crisis management; disaster management; earthquake damage; earthquake rupture; image resolution; recovery plan; remote sensing; satellite imagery; Sichuan earthquake 2008; spatial resolution; SPOT; three-dimensional modeling; two-dimensional modeling; China; Sichuan; Wenchuan
REFERENCES: Use of Existing and Future Remote Sensing Systems in Natural Hazard Management Specifications and Requirements, (1997); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Remote Sensing and Geographic Information Systems for Emergency Management Effective Implementation, (1995); 
Chen, Cheming, Fusion of hyperspectral and radar data using the IHS transformation to enhance urban surface features, ISPRS Journal of Photogrammetry and Remote Sensing, 58, 1-2, pp. 19-30, (2003); 
She Fa Chen, Active faulting and block movement associated with large earthquakes in the Min Shan and Longmen Mountains, northeastern Tibetan Plateau, Journal of Geophysical Research, 99, B12, pp. 24-38, (1994); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Report on the Kocaeli Turkey Earthquake of August 17 1999, (2000); 
Ganas, Athanassios, The use of earth observation and decision support systems in the restoration of open-cast nickel mines Evia, central Greece, International Journal of Remote Sensing, 25, 16, pp. 3261-3274, (2004); 
Gupta, Ravi Prakash, Landslide hazard zoning using the GIS approach-A case study from the Ramganga catchment, Himalayas, Engineering Geology, 28, 1-2, pp. 119-131, (1990)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Singh, R.P.
AUTHOR FULL NAMES: Singh, Ramesh P. (57207365326)
57207365326
Satellite observations of the Wenchuan earthquake, 12 may 2008
(2010) International Journal of Remote Sensing, 31 (13), pp. 3335 - 3339, Cited 11 times.
DOI: 10.1080/01431161003727820
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954842831&doi=10.1080%2F01431161003727820&partnerID=40&md5=829adb93435cb55c2c2328381ff23c73

INDEX KEYWORDS: earthquake event; remote sensing; satellite; China; Sichuan; Wenchuan
REFERENCES: Afraimovich, Edward L., TEC response to the 2008 Wenchuan Earthquake in comparison with other strong earthquakes, International Journal of Remote Sensing, 31, 13, pp. 3601-3613, (2010); 
Balz, Timo, Building-damage detection using post-seismic high-resolution SAR satellite data, International Journal of Remote Sensing, 31, 13, pp. 3369-3391, (2010); 
Błeçki, Jan S., Studies of the electromagnetic field variations in ELF frequency range registered by DEMETER over the Sichuan region prior to the 12 May 2008 earthquake, International Journal of Remote Sensing, 31, 13, pp. 3615-3629, (2010); 
Chunxiang, Cao, Epidemic risk analysis after the Wenchuan Earthquake using remote sensing, International Journal of Remote Sensing, 31, 13, pp. 3631-3642, (2010); 
Das, Nisith Kr, Significant anomalies of helium, radon and gamma ahead of 7.9 M China earthquake, Acta Geodaetica et Geophysica Hungarica, 44, 3, pp. 357-365, (2009); 
Devi, Minakshi, Anomalous total electron content (TEC) and atmospheric refractivity prior to the very strong China earthquake of May 2008, International Journal of Remote Sensing, 31, 13, pp. 3589-3599, (2010); 
Guo, Huadong, Damage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data, International Journal of Remote Sensing, 31, 13, pp. 3427-3433, (2010); 
Jhuang, Hau Kun, Seismo-ionospheric anomalies of the GPS-TEC appear before the 12 May 2008 magnitude 8.0 Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3579-3587, (2010); 
Jin, Shuanggen, Co-seismic ionospheric and deformation signals on the 2008 magnitude 8.0 Wenchuan Earthquake from GPS observations, International Journal of Remote Sensing, 31, 13, pp. 3535-3543, (2010); 
Kakinami, Yoshihiro, Ionospheric electron content anomalies detected by a FORMOSAT-3/COSMIC empirical model before and after the Wenchuan Earthquake, International Journal of Remote Sensing, 31, 13, pp. 3571-3578, (2010)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhuang, J., Cui, P., Ge, Y., Yi-Ping, H., Liu, Y., Guo, X.-J.
AUTHOR FULL NAMES: Zhuang, Jianqi (26538426500); Cui, Peng (56706923500); Ge, Yonggang (26039083000); Yi-Ping, He (36246866400); Liu, Yinghui (36647679000); Guo, Xiaojun (55636231600)
26538426500; 56706923500; 26039083000; 36246866400; 36647679000; 55636231600
Probability assessment of river blocking by debris flow associated with the Wenchuan Earthquake
(2010) International Journal of Remote Sensing, 31 (13), pp. 3465 - 3478, Cited 26 times.
DOI: 10.1080/01431161003730873
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954839611&doi=10.1080%2F01431161003730873&partnerID=40&md5=2d2dd4cbabe6c27b11e7a3834260c4f6

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Lanzhou University, Lanzhou, Gansu, China
ABSTRACT: This paper assesses the probability of the main stream in the Dujiangyan- Wenchuan reach of the Minjiang River becoming blocked by debris flows in response to the Wenchuan Earthquake of 12 May 2008, on the basis of analyses of remote sensing data and ground investigations. Background information of debris flow gullies was developed from field investigations and high-resolution remote sensing image interpretation, and was used to estimate the maximum discharge per unit width by means of the revised model of debris flow magnitude according to the situation after the Earthquake. Based on improved discrimination equations of river blocking induced by debris flow, 29 debris flow gullies were evaluated and classified as four probability levels: extreme high, high, moderate and low. The results show that most of the debris flow gullies were at or over moderate hazard level, accounting for 72.4% of the total area. The present results provide a scientific basis for the prevention, elusion and mitigation of debris flow hazards and will contribute to the reconstruction of an earthquake prone area. © 2010 Taylor & Francis.
INDEX KEYWORDS: Blocking probability; Debris; Hazards; Landforms; Probability; Remote sensing; Rivers; Background information; Debris flow hazards; Field investigation; Ground investigation; High resolution remote sensing images; Probability assessments; Remote sensing data; Wenchuan Earthquake; Earthquakes; assessment method; data processing; debris flow; geological mapping; gully; hazard assessment; image resolution; observational method; probability; remote sensing; river; river discharge; satellite data; Sichuan earthquake 2008; China; Dujiangyan; Min River [Sichuan]; Sichuan; Wenchuan
REFERENCES: Journal of Sediment Research, (2002); 
Crowley, James K., Analysis of potential debris flow source areas on Mount Shasta, California, by using airborne and satellite remote sensing data, Remote Sensing of Environment, 87, 2-3, pp. 345-358, (2003); 
Journal of Mountain Science, (2006); 
Cui, Peng, The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards, Natural Hazards, 56, 1, pp. 19-36, (2011); 
Triggering Storm Rainfall and Material Properties, (2005); 
Using Spss for Windows Data Analysis and Graphics, (2005); 
Guo, Zhixue, Experimental study on parameters affecting the river-blocking due to debris flow, Shuili Xuebao/Journal of Hydraulic Engineering, 11, (2004); 
Influence of Debris Flow on River Channel Change of Mountains, (2003); 
He, Yiping, Flume experiment on stream blockage by the debris flow from tributary, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 37, SUPPL., pp. 64-70, (2005); 
Research on Debris Flow of China, (2004)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Jin, S., Zhu, W., Afraimovich, E.
AUTHOR FULL NAMES: Jin, Shuanggen (7401822381); Zhu, Wenyao (7404232272); Afraimovich, Edward L. (7005976446)
7401822381; 7404232272; 7005976446
Co-seismic ionospheric and deformation signals on the 2008 magnitude 8.0 Wenchuan Earthquake from GPS observations
(2010) International Journal of Remote Sensing, 31 (13), pp. 3535 - 3543, Cited 56 times.
DOI: 10.1080/01431161003727739
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954839483&doi=10.1080%2F01431161003727739&partnerID=40&md5=93bc15c3d4bfae7fc5567388c06ddc0d

AFFILIATIONS: Shanghai Astronomical Observatory Chinese Academy of Sciences, Shanghai, Shanghai, China; Korea Astronomy and Space Science Institute, Daejeon, South Korea; Cockrell School of Engineering, Austin, TX, United States; Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Irkutsk Oblast, Russian Federation
ABSTRACT: The 8.0 magnitude Wenchuan Earthquake occurred at the Longmenshan Fault along the eastern boundary between the Tibetan Plateau and the western Sichuan Basin in southwestern China on 12 May 2008, killing tens of thousands of people in several cities along the western Sichuan Basin. In this paper, co-seismic ionospheric and deformation signals from the mainshock of this event are extracted from national global positioning system (GPS) network observations, which provide unique insights into this event. The co-seismic deformation moves towards the earthquake epicentre, and the largest magnitude reaches 2.3 m in Beichuan. The total moment of the co-seismic rupture is 2.4 × 1021 nm, equivalent to a magnitude of 8.1 and nearly identical to the seismological estimate. Furthermore, co-seismic ionospheric disturbances indicate a shock-acoustic wave propagation at a mean velocity of about 600 m s-1 towards the rupture direction. © 2010 Taylor & Francis.
INDEX KEYWORDS: Acoustic wave propagation; Deformation; Global positioning system; Coseismic deformation; Deformation signal; Ionospheric disturbance; Longmenshan faults; Network observation; Tibetan Plateau; Wenchuan Earthquake; Western Sichuan basin; Earthquakes; coseismic process; deformation; earthquake epicenter; earthquake magnitude; earthquake rupture; GPS; remote sensing; Sichuan earthquake 2008; signal; wave propagation; Beichuan; China; Longmenshan Fault Zone; Qinghai-Xizang Plateau; Sichuan; Sichuan Basin
REFERENCES: Afraimovich, Edward L., The shock-acoustic waves generated by earthquakes, Annales Geophysicae, 19, 4, pp. 395-409, (2001); 
Afraimovich, Edward L., TEC response to the 2008 Wenchuan Earthquake in comparison with other strong earthquakes, International Journal of Remote Sensing, 31, 13, pp. 3601-3613, (2010); 
Altamimi, Zuheir, ITRF2005: A new release of the International Terrestrial Reference Frame based on time series of station positions and Earth Orientation Parameters, Journal of Geophysical Research: Solid Earth, 112, 9, (2007); 
Burchfiel, B. Clark, Tectonics of the Longmen Shan and Adjacent Regions, Central China, International Geology Review, 37, 8, pp. 661-735, (1995); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Globk Global Kalman Filter Vlbi and GPS Analysis Program, (2002); 
Jia, Dong, Longmen Shan fold-thrust belt and its relation to the western Sichuan Basin in central China: New insights from hydrocarbon exploration, AAPG Bulletin, 90, 9, pp. 1425-1447, (2006); 
Jin, Shuanggen, Micro-plate tectonics and kinematics in Northeast Asia inferred from a dense set of GPS observations, Earth and Planetary Science Letters, 257, 3-4, pp. 486-496, (2007)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Pan, G., Tang, D.
AUTHOR FULL NAMES: Pan, Gang (56207282700); Tang, Danling (7401987278)
56207282700; 7401987278
Damage information derived from multi-sensor data of the Wenchuan Earthquake of May 2008
(2010) International Journal of Remote Sensing, 31 (13), pp. 3509 - 3519, Cited 28 times.
DOI: 10.1080/01431161003730865
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954839224&doi=10.1080%2F01431161003730865&partnerID=40&md5=77bee200b4123f6d41713e2b3fc793e7

AFFILIATIONS: Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Guangzhou, Guangdong, China
ABSTRACT: The Wenchuan Earthquake of magnitude 8.0 struck Sichuan Province in southwest China on 12 May 2008. This paper presents an overview of the use of multisource satellite images in investigating the influence of this earthquake around the epicentral area. The results show the capability of remote sensing technique for damage detection in quake-hit areas. Optical satellite images (FORMOSAT-2 and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)) provide useful information, although rain and cloud limit the availability of satellite data. However, the Synthetic Aperture Radar (SAR) sensor provides information in all weather conditions. Combined optical satellite and SAR data have been used to assess the damage of earthquakes, including landslides, barrier lakes and collapsed buildings. From the interferogram of two phased array type L- band SAR (PALSAR)/Advanced Land Observing Satellite (ALOS) images, more than 100 cm of ground displacement was found in Beichuan County, one of the worst-affected earthquake areas. These examples show the use of satellite images in post-disaster damage assessment and planning during the rescue operation soon after a major event such as the 12 May 2008 earthquake. © 2010 Taylor & Francis.
INDEX KEYWORDS: Damage detection; Remote sensing; Satellites; Space-based radar; Synthetic aperture radar; Advanced spaceborne thermal emission and reflection radiometer; Collapsed buildings; Damage assessments; Ground displacement; Optical satellite images; Optical satellites; Remote sensing techniques; Wenchuan Earthquake; Earthquakes; detection method; displacement; earthquake damage; hazard assessment; radar imagery; remote sensing; satellite data; satellite imagery; Sichuan earthquake 2008; synthetic aperture radar; Beichuan; China; Sichuan
REFERENCES: Atzori, Simone, Postseismic displacement of the 1999 Athens earthquake retrieved by the Differential Interferometry by Synthetic Aperture Radar time series, Journal of Geophysical Research: Solid Earth, 113, 9, (2008); 
Wenchuan Earthquake Disasters in Remote Sensing Monitoring and Damage Evaluation, (2008); 
Eos Transactions American Geophysical Union, (2008); 
Chern, Jeng Shing (Rock), Taiwan's second remote sensing satellite, Acta Astronautica, 63, 11-12, pp. 1305-1311, (2008); 
Colesanti, Carlo, Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry, Engineering Geology, 88, 3-4, pp. 173-199, (2006); 
Satellite Records Change in Ionosphere Before Sichuan Quake, (2008); 
Differential Interferometry of Sichuan Earthquake, (2008); 
Ferretti, Alessandro, Nonlinear subsidence rate estimation using permanent scatterers in differential SAR interferometry, IEEE Transactions on Geoscience and Remote Sensing, 38, 5 I, pp. 2202-2212, (2000); 
Earthquake in China, (2008); 
Ito, Atsuyo, Issues in the implementation of the International Charter on Space and Major Disasters, Space Policy, 21, 2, pp. 141-149, (2005)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ren, Z., Lin, L.
AUTHOR FULL NAMES: Ren, Zhikun (26321922800); Lin, Aiming (7402061915)
26321922800; 7402061915
Co-seismic landslides induced by the 2008 Wenchuan magnitude 8.0 Earthquake, as revealed by ALOS PRISM and AVNIR2 imagery data
(2010) International Journal of Remote Sensing, 31 (13), pp. 3479 - 3493, Cited 32 times.
DOI: 10.1080/01431161003727770
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954837942&doi=10.1080%2F01431161003727770&partnerID=40&md5=33d133a301e42f097f9564c3149c8152

AFFILIATIONS: Graduate School of Science and Technology, Shizuoka University, Shizuoka, Shizuoka, Japan
ABSTRACT: The magnitude 8.0 Wenchuan Earthquake occurred on 12 May 2008 in Sichuan Province, China, resulting in numerous landslides along the marginal zone between the Tibetan Plateau and Sichuan Basin. We used Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) and Advanced Visible and Near Infrared Radiometer type 2 (AVNIR 2) data from the Advanced Land Observing Satellite (ALOS) and Landsat Enhanced Thematic Mapper (ETM) images acquired before and after the earthquake to identify co-seismic landslides. Interpretations of remote sensing images, combined with fieldwork, reveal that co-seismic landslides are mainly restricted to a corridor of, < 18 km in width about the co-seismic surface rupture zone along a length of. >285 km along pre-existing active faults of the Longmenshan Thrust Belt. The landslides mainly occurred upon steep slopes (dips of 30-75°). The distribution and topographic features of co-seismic landslides indicate a close relationship with seismic slip along the co-seismic surface rupture zone. The locations of landslides are controlled by the tectonic topography developed along pre-existing active faults of the Longmenshan Thrust Belt. Our results demonstrate that remote sensing techniques provide a powerful tool for identifying co-seismic landslides produced in intermountain regions by strong earthquakes. © 2010 Taylor & Francis.
INDEX KEYWORDS: Faulting; Image enhancement; Infrared devices; Landslides; Mapping; Prisms; Remote sensing; Advanced land observing satellites; Enhanced thematic mapper images; Remote sensing images; Remote sensing instruments; Remote sensing techniques; Topographic features; Visible and near infrared radiometers; Wenchuan Earthquake; Earthquakes; ALOS; AVNIR; coseismic process; data interpretation; earthquake magnitude; earthquake rupture; geological mapping; identification method; image processing; Landsat thematic mapper; landslide; remote sensing; satellite data; satellite imagery; Sichuan earthquake 2008; topographic mapping; China; Longmenshan Fault Zone; Qinghai-Xizang Plateau; Sichuan; Sichuan Basin; Wenchuan
REFERENCES: Burbank, Douglas W., Bedrock incision, rock uplift and threshold hillslopes in the northwestern Himalayas, Nature, 379, 6565, pp. 505-510, (1996); 
Rupture Process of the 2008 Ms 8 0 Wenchuan Earthquake, (2008); 
Chen, Shefa, Emplacement of the Longmen Shan Thrust-Nappe Belt along the eastern margin of the Tibetan Plateau, Journal of Structural Geology, 18, 4, pp. 413-430, (1996); 
Chuang, Shanchieh, Increase in basin sediment yield from landslides in storms following major seismic disturbance, Engineering Geology, 103, 1-2, pp. 59-65, (2009); 
Dadson, Simon J., Earthquake-triggered increase in sediment delivery from an active mountain belt, Geology, 32, 8, pp. 733-736, (2004); 
Das, Josodhir D., Satellite data in a rapid analysis of Kashmir earthquake (October 2005) triggered landslide pattern and river water turbidity in and around the epicentral region, International Journal of Remote Sensing, 28, 8, pp. 1835-1842, (2007); 
Seismology and Geology, (1994); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Acta Geologica Sinica, (2008); 
Fu, Bihong, Spatial distribution of the surface rupture zone associated with the 2001 Ms 8.1 Central Kunlun earthquake, northern Tibet, revealed by satellite remote sensing data, International Journal of Remote Sensing, 24, 10, pp. 2191-2198, (2003)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, W., Lin, J., Peng, J., Lu, Q.
AUTHOR FULL NAMES: Zhang, Wenjiang (54415154800); Lin, Jiayuan (56129616500); Peng, Jian (36663802100); Lu, Qifeng (15074079100)
54415154800; 56129616500; 36663802100; 15074079100
Estimating Wenchuan Earthquake induced landslides based on remote sensing
(2010) International Journal of Remote Sensing, 31 (13), pp. 3495 - 3508, Cited 65 times.
DOI: 10.1080/01431161003727630
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954837412&doi=10.1080%2F01431161003727630&partnerID=40&md5=fc3d5ce63eb394eb7b1864465e3923cd

AFFILIATIONS: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; College of Urban and Environmental Sciences, Peking University, Beijing, China; National Satellite Meteorological Center Beijing, Beijing, China
ABSTRACT: On 12 May 2008 the magnitude 8.0 Wenchuan Earthquake erupted on the eastern fringe of the Tibetan Plateau in China, triggering many landslides onto towns and villages, leading to substantial loss of life and damage to property and the infrastructure. Local characteristic cloudy weather posed serious difficulties upon regional remote observation for disaster rescue in the mountainous region. To overcome weather limits to remote sensing, the study advanced one quick methodology to extract primary regional landslides with 8-day Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) and terrain slope information. The threshold of temporal NDVI jump (value of 0.4) was introduced to discriminate landslide induced sharp NDVI decline from seasonal variations of vegetation cover, while slope information can be used to further confirm land cover change caused by a landslide. The study indicated that the Wenchuan Earthquake induced about 170 km2 of landslides in the southern half of the Longmenshan Fault Zone, most of which was formerly covered by forest or shrub. An ecological restoration of the areas affected by landslides will therefore be quite difficult. In addition, the result emphasizes that regions with slopes over 15° are exposed to high landslide risk, which should be carefully taken into account for settlement and transportation planning. © 2010 Taylor & Francis.
INDEX KEYWORDS: Landslides; Radiometers; Remote sensing; Satellite imagery; Vegetation; Ecological restoration; Local characteristics; Longmenshan fault zone; Moderate resolution imaging spectroradiometer; Mountainous regions; Normalized difference vegetation index; Transportation planning; Wenchuan Earthquake; Earthquakes; estimation method; land use change; landslide; MODIS; NDVI; remote sensing; seasonal variation; Sichuan earthquake 2008; threshold; vegetation cover; China; Longmenshan Fault Zone; Sichuan
REFERENCES: Buyantuyev, Alexander B., Effects of thematic resolution on landscape pattern analysis, Landscape Ecology, 22, 1, pp. 7-13, (2007); 
Canuti, Paolo, Integration of remote sensing techniques in different stages of landslide response, pp. 251-260, (2007); 
Cheng, Ke Sheng, Locating landslides using multi-temporal satellite images, Advances in Space Research, 33, 3, pp. 296-301, (2004); 
Farr, Thomas G., The shuttle radar topography mission, Reviews of Geophysics, 45, 2, (2007); 
Hervás, Javier, Monitoring landslides from optical remotely sensed imagery: The case history of Tessina landslide, Italy, Geomorphology, 54, 1-2, pp. 63-75, (2003); 
HONG, Yang, Use of satellite remote sensing data in the mapping of global landslide susceptibility, Natural Hazards, 43, 2, pp. 245-256, (2007); 
HONG, Yang, An experimental global prediction system for Rainfall-Triggered landslides using satellite remote sensing and geospatial datasets, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1671-1680, (2007); 
Huete, Alfredo Ramon, Overview of the radiometric and biophysical performance of the MODIS vegetation indices, Remote Sensing of Environment, 83, 1-2, pp. 195-213, (2002); 
Knapen, Anke, Landslides in a densely populated county at the footslopes of Mount Elgon (Uganda): Characteristics and causal factors, Geomorphology, 73, 1-2, pp. 149-165, (2006); 
Metternicht, Graciela I., Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, 98, 2-3, pp. 284-303, (2005)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Guo, H., Ma, J., Zhang, B., Li, Z., Huang, J., Zhu, L.
AUTHOR FULL NAMES: Guo, Huadong (56415384100); Ma, Jianwen (7406200149); Zhang, Bing (8835983800); Li, Zhen (57184557300); Huang, Jun (56135668900); Zhu, Lanwei (24081590900)
56415384100; 7406200149; 8835983800; 57184557300; 56135668900; 24081590900
Damage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data
(2010) International Journal of Remote Sensing, 31 (13), pp. 3427 - 3433, Cited 10 times.
DOI: 10.1080/01431161003727648
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954837290&doi=10.1080%2F01431161003727648&partnerID=40&md5=cc20358340348ec4b32253090bb0a1c9

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The Wenchuan Earthquake occurred on 12 May 2008 followed by frequent after-shocks. The earthquake suddenly caused heavy damage to roads, bridges, buildings and communication facilities. Two B4101 Citation II remote sensing airplanes from the Chinese Academy of Sciences took off to monitor the region soon after the earthquake and collected images using a synthetic aperture radar (SAR) device and an optical ADS40 sensor. Using images obtained from airborne surveys, a damage consequence chain was mapped that provided information about the type of damage and its extent. This proved to be of great help for rescue operations and after earthquake reconstructions. We present details of airborne survey, images and mapping of damages caused by the earthquake and the use of such information for a rescue operation. © 2010 Taylor & Francis.
INDEX KEYWORDS: Chains; Mapping; Remote sensing; Surveys; Synthetic aperture radar; After shocks; Airborne surveys; Chinese Academy of Sciences; Communication facilities; Heavy damage; Remotely sensed data; Rescue operations; Wenchuan Earthquake; Earthquakes; aftershock; airborne sensing; airborne survey; earthquake damage; mapping method; reconstruction; remote sensing; search and rescue; Sichuan earthquake 2008; synthetic aperture radar; China; Sichuan; Wenchuan
REFERENCES: Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Atlas of Remote Sensing for Wenchuan Earthquake Disaster, (2008); 
Quaternary Sciences, (2006); 
Geological Bulletin of China, (2007); 
Forward Forum, (2008); 
Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Zhou, Rongjun, Active tectonics of the eastern margin of the Tibet Plateau, Kuangwu Yanshi, 26, 2, pp. 40-51, (2006)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Chunxiang, C., Chang, C., Xu, M., Zhao, J., Gao, M., Zhang, H., Guo, J., Guo, J., Dong, L., He, Q., Bai, L., Bao, Y., Chen, W., Zheng, S., Tian, Y., And, W.L., Li, X.
AUTHOR FULL NAMES: Chunxiang, Cao (36182900900); Chang, Chaoyi (36182703200); Xu, Min C. (36071644600); Zhao, Jian (57189854681); Gao, Mengxu (36021003600); Zhang, Hao J. (9238972800); Guo, Jianping (57224911813); Guo, Jianghong (57212984789); Dong, Lei (59591212000); He, Qisheng (35423878400); Bai, Lingyan (23011319400); Bao, Yunfei (55083178100); Chen, Wei (58735368000); Zheng, Sheng (55271598400); Tian, Yifei (55480227400); And, Wenxiu Li (36245969000); Li, Xiaowen (24755928100)
36182900900; 36182703200; 36071644600; 57189854681; 36021003600; 9238972800; 57224911813; 57212984789; 59591212000; 35423878400; 23011319400; 55083178100; 58735368000; 55271598400; 55480227400; 36245969000; 24755928100
Epidemic risk analysis after the Wenchuan Earthquake using remote sensing
(2010) International Journal of Remote Sensing, 31 (13), pp. 3631 - 3642, Cited 26 times.
DOI: 10.1080/01431161003727713
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954836886&doi=10.1080%2F01431161003727713&partnerID=40&md5=8c5806ef1b5766cb0074972d29688a33

AFFILIATIONS: Beijing Normal University, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Centre for Atmosphere Watch and Services, China Meteorological Administration, Beijing, China; Ziyuyuan Environ-Protection Limited Company of Science and Technology, Beijing, China
ABSTRACT: On 12 May 2008, Wenchuan Earthquake, magnitude 8.0, destroyed thousands of buildings, and resulted in thousands of people being buried in the collapsed buildings. In order to investigate the potential epidemic disease risk after earthquake, a Backward Propagation Neural Network (BPNN) was constructed to assess the potential epidemic risks by applying remote sensing technology to obtain Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) values, as well as by using a geographic information system (GIS) to gain ambient epidemic-related spatial factors over the earthquake region. In this study, a relationship was established between the change in environmental factors after earthquake and potential epidemic risks, which was found to be statistically significant. The result might be explained for three change perspectives, namely environmental risks, medical risks and psychological risks. The corresponding strategies for preparedness in case of epidemic disease were given. © 2010 Taylor & Francis.
INDEX KEYWORDS: Epidemiology; Information use; Remote sensing; Risk analysis; Risk assessment; Vegetation; Backward propagation neural networks; Collapsed buildings; Environmental factors; Environmental risks; Normalized difference vegetation index; Normalized difference water index; Remote sensing technology; Wenchuan Earthquake; Earthquakes; artificial neural network; back propagation; earthquake damage; environmental factor; epidemic; GIS; NDVI; remote sensing; risk assessment; Sichuan earthquake 2008
REFERENCES: Bai, Yanping, Prediction of SARS epidemic by BP neural networks with online prediction strategy, Chaos, Solitons and Fractals, 26, 2, pp. 559-569, (2005); 
Beck, Louisa R., Remote sensing as a landscape epidemiologic tool to identify villages at high risk for malaria transmission, American Journal of Tropical Medicine and Hygiene, 51, 3, pp. 271-280, (1994); 
Gao, Bocai, NDWI - A normalized difference water index for remote sensing of vegetation liquid water from space, Remote Sensing of Environment, 58, 3, pp. 257-266, (1996); 
Science in China Ser C Life Sciences, (2006); 
Hayes, R. O., Detection, identification, and classification of mosquito larval habitats using remote sensing scanners in earth-orbiting satellites, Bulletin of the World Health Organization, 63, 2, pp. 361-374, (1985); 
Li, Shu, Psychological typhoon eye in the 2008 Wenchuan earthquake, PLOS ONE, 4, 3, (2009); 
Haijiang, Liu, Monitoring sandy desertification of Otindag Sandy Land based on multi-date remote sensing images, Acta Ecologica Sinica, 28, 2, pp. 627-635, (2008); 
Kitron, Uriel D., Spatial analysis of the distribution of lyme disease in Wisconsin, American Journal of Epidemiology, 145, 6, pp. 558-566, (1997); 
Hatamizadeh, Parta, Epidemiologic aspects of the Bam earthquake in Iran: The nephrologic perspective, American Journal of Kidney Diseases, 47, 3, pp. 428-438, (2006); 
Current Science, (2001)
PUBLISHER: Taylor and Francis Ltd.
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Du, G.-Y., Miao, F., Guo, X.-R.
AUTHOR FULL NAMES: Du, Genyuan Yuana (16042030300); Miao, Fang (35768354700); Guo, Xirong (35193997600)
16042030300; 35768354700; 35193997600
A novel network service mode of geospatial information and its prototype system
(2010) Advanced Materials Research, 108-111 (1), pp. 319 - 323, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954204862&partnerID=40&md5=bf061685be3030bfea40567193375232

AFFILIATIONS: School of Computer Science and Technology, Xuchang University, Xuchang, Henan, China; College of Information Engineering, Chengdu University of Technology, Chengdu, China; Key Laboratory of Earth Exploration and Information Technology, Ministry of Education of the People's Republic of China, Beijing, Beijing, China
ABSTRACT: This paper proposes a novel digital earth platform framework, which is a application, service and decision-making support systems of geospatial data acquisition, storage, transmission, conversion, processing, analysis, retrieval, expression and output as a unified body, the core of which is to deal with geospatial data for spatial geographic information network service Geo-Browser/Geospatial Information Server (G/S) mode and Hyper Geographic Markup Language (HGML). Depth understanding and analysis of platform architecture, this paper realizes of digital earth platform prototype -U-Star based on the geospatial information network service G/S mode, the platform has the merits of C/S mode that full use of client resources, efficient to deal with the client data, as well as the advantages of B/S mode that the unified client and convenient to access network. This platform is a new server which can cope with massive geospatial information and a solution which can provide efficient service. It has already been applied into many fields, such as the digital tourism service system, the time sequence analysis of Wenchuan Earthquake, the real-time video monitoring based on the digital earth platform and the intelligent processing and exhibition of remote sensing data. The result indicates that the perfection of space, time and complexion of the geospatial information network accessing will effectively improve the quality and efficiency of the shared data, which has very important theoretical significance and bright prospect of application.
AUTHOR KEYWORDS: Browser/server; Client/server; Geo-browser/geospatial information server; Hyper Geographic markup language; Network service mode
INDEX KEYWORDS: Data acquisition; Decision making; Digital storage; Distributed computer systems; Earthquakes; Information services; Markup languages; Remote sensing; Browser/server; Client /server; Geographic markup languages; Information servers; Network services; Search engines
REFERENCES: Geomatics World, (2003); 
Journal of Remote Sensing, (2005); 
Journal of Image and Graphics, (2001); 
Geography and Geoinformation Science, (2003); 
Geography and Geo Information Science, (2004); 
Section 303 of the Xiangshan Science Conference Meeting Digital China S Development Strategy, (2010); 
Science of Surveying and Mapping, (2007); 
Liu, Rui, Earth science framework research based on the digital earth platform, Proceedings of SPIE - The International Society for Optical Engineering, 6753, PART 2, (2007); 
Pezanowski, Scott, An open GeoSpatial standards-enabled google earth application to support crisis management, Lecture Notes in Geoinformation and Cartography, pp. 225-238, (2007); 
Wu, Yijian, XCS system: A new architecture for web-based applications, Lecture Notes in Computer Science, 3033, pp. 1046-1050, (2004)
PUBLISHER: Trans Tech Publications
SPONSORS: Huazhong Normal University, Intelligent Inf. Technol. Appl. Res. Assoc.
CONFERENCE NAME: 2010 International Conference on Advanced Measurement and Test, AMT 2010
CONFERENCE DATE: 2010-05-15 through 2010-05-16
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Fan, J., Chen, J.X., Tian, B., Yan, D., Cheng, G., Cui, P., Zhang, W.
AUTHOR FULL NAMES: Fan, Jianrong (8727506000); Chen, Jim X. (7501895619); Tian, Bingwei (24376970400); Yan, Dong (55065546500); Cheng, Genwei (8534152600); Cui, Peng (56706923500); Zhang, Wen (35340171900)
8727506000; 7501895619; 24376970400; 55065546500; 8534152600; 56706923500; 35340171900
Rapid assessment of secondary disasters induced by the wenchuan earthquake
(2010) Computing in Science and Engineering, 12 (1), art. no. 5372176, pp. 10 - 19, Cited 11 times.
DOI: 10.1109/MCSE.2010.16
https://www.scopus.com/inward/record.uri?eid=2-s2.0-75449118979&doi=10.1109%2FMCSE.2010.16&partnerID=40&md5=c3f8755bfa148a9af32066ea2c1ad2d9

AFFILIATIONS: Institute of Mountain Hazard and Environment, Chinese Academy of Sciences, Beijing, Beijing, China; College of Engineering and Computing, Fairfax, VA, United States; Institute of Mountain Hazards and Environment, University of Chinese Academy of Sciences, Beijing, China; Sichuan Forestry and Grassland Survey and Planning Institute, Chengdu, Sichuan, China
ABSTRACT: The Wenchuan earthquake of 12 May 2008 produced numerous secondary mountain disasters, including the formation of dangerous barrier lakes resulting from blocked river channels. By exploiting real-time, multiplatform remote sensing imagery data, researchers located these barrier lakes, acquired their distribution information, and assessed the threats to inform mitigation efforts and help prevent potentially disastrous consequences. © 2006 IEEE.
AUTHOR KEYWORDS: Barrier lakes; Farmlands; Forests; Multiplatform remote sensing; Secondary disaster; Sichuan; Wenchuan county; Wenchuan earthquake
INDEX KEYWORDS: Farmlands; Forests; Multi-platform; Sichuan; Wenchuan Earthquake; Disasters; Lakes; Remote sensing; Earthquakes
REFERENCES: Journal of Mountain Science, (2008); 
Principle and Method of Analysis of Remote Sensing Application, (2003); 
Principle of Environment Remote Sensing and Its Applications, (2006); 
Journal of Mountain Science, (2008); 
J Mountain Science, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zeng, T., Yang, W.-N., Peng, L., Wu, H.
AUTHOR FULL NAMES: Zeng, Tao (58587229300); Yang, Wunian (7407756597); Peng, Li (35206100100); Wu, Hao (55658056352)
58587229300; 7407756597; 35206100100; 55658056352
UAV remote sensing image processing and classification in Wenchuan earthquake district
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7498, art. no. 749823, Cited 7 times.
DOI: 10.1117/12.832957
https://www.scopus.com/inward/record.uri?eid=2-s2.0-71649101219&doi=10.1117%2F12.832957&partnerID=40&md5=1475c7bbe3ffcbe463de2fd171ddecc8

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, China
ABSTRACT: Remote sensing image presented as one of the most effective methods to acquire the disaster information in the Wenchuan earthquake. For its technical advantages such as rapid and flexible takeoff, the Unmanned Aerial Vehicles (UAV) played an important role in the "5.12" Wenchuan earthquake emergency relief. The UAV remote sensing image has some special characteristics contrasting with other RS image, so how to process quickly the images is the key issue. In this paper, a fast method is presented for moisacing the remote sensing images from the UAV without ground control points. The method grounds on two principles, parallel computing and digital photogrammetry. The experimental results justify the needs of uncontrolled mosaic images production for the requirements of post-disaster emergency. The mosaic images without correction by ground control points provide no geographic information, but they can provide panoramic and macro-information of earthquake-stricken areas. Then the geometric correction technique was employed to correct the panoramic mosaic images to obtain the high-precise digital orthophoto based on the pre-disaster information such as topographic maps. By using the object-oriented method for the information extraction and rapid automatic classification of the UVA remote sensing image can achieve the anticipative goals. © 2009 Copyright SPIE - The International Society for Optical Engineering.
AUTHOR KEYWORDS: Non-standard image processing; Remote sensing image classification; Unmanned-Aircraft Vehicle (UAV); Wenchuan earthquake
INDEX KEYWORDS: Aircraft vehicles; Automatic classification; Digital photogrammetry; Disaster Information; Emergency relief; Fast methods; Geographic information; Geometric correction; Ground control points; High-precise; Information Extraction; Key issues; Mosaic images; Object oriented method; Panoramic mosaic image; Parallel Computing; Remote sensing image classification; Remote sensing images; RS image; Standard images; Topographic map; Wenchuan Earthquake; Aircraft accidents; Automatic indexing; Data processing; Earthquakes; Geographic information systems; Image analysis; Image classification; Image reconstruction; Imaging systems; Maps; Parallel architectures; Remote sensing; Remotely operated vehicles; Rock mechanics; Unmanned aerial vehicles (UAV); Object recognition
REFERENCES: High Techs of Survey and Mapping Play an Important Role in Wenchuan Earthquake, (2008); 
Bulletin of Surveying and Mapping, (2005); 
Journal of Remote Sensing, (2008); 
Zhao, Hongying, The characteristic analyses of images from the UAV remote sensing system, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3349-3351, (2006); 
Yang, Wunian, Digital processing and information extraction of the SPOT, ERS-SAR, Radarsat and Landsat TM images for geological hazard in the Yangtze Three Gorges Project Region, China, Acta Geologica Sinica (English Edition), 79, 3, pp. 423-430, (2005); 
Computer Engineering and Applications, (2008); 
Journal of Remote Sensing, (2008); 
Xibei Seismology Journal, (2008); 
Remo Te Sens Ing for Land Resources, (2008); 
Li, Deren Ren, Approach for terrain change detection and DEM updating, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 31, 7, pp. 565-568, (2006)
SPONSORS: Natl. Lab. Multi-spectral Inf. Process. Technol., Huazhong University of Science and Technology, National Natural Science Foundation of China, China Three Gorges University
CONFERENCE NAME: MIPPR 2009 - Remote Sensing and GIS Data Processing and Other Applications: 6th International Symposium on Multispectral Image Processing and Pattern Recognition
CONFERENCE DATE: 2009-10-30 through 2009-11-01
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, F., Xiwei, X., Chen, G.-H., Dong, S.-P., An, Y.-F.
AUTHOR FULL NAMES: Li, Feng (36120512500); Xiwei, Xu (8246843900); Chen, Guihua (55733464100); Dong, Shaopeng (24780301600); An, Yanfen (24586916600)
36120512500; 8246843900; 55733464100; 24780301600; 24586916600
Application of 3D laser scanning technology in the investigation of the Ms8.0 Wenchuan earthquake surface ruptures
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7498, art. no. 74984P, Cited 0 times.
DOI: 10.1117/12.833039
https://www.scopus.com/inward/record.uri?eid=2-s2.0-71549139121&doi=10.1117%2F12.833039&partnerID=40&md5=d8a66d203130f6b61fc5a2e4a34911f2

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; China Earthquake Disaster Prevention Center, Beijing, China
ABSTRACT: As the scientific investigation on the Ms8.0 Wenchuan earthquake demonstrates, the landscapes of co-seismic surface ruptures or structure destructions were rapidly destroyed by storms or secondary disasters. Traditional survey methods often are limited by the environment and do not provide perfect information about the deformation value in a timely manner. The 3D laser scanner, on the other hand, can work under varying light conditions and does not require contact with the destroyed objects. Its prompt completion of a pan-shot makes it possible to efficiently record a wealth of information about the earthquake deformations, ensuring the quantitative analysis of related data. Its disadvantages include costliness, unwieldiness and high-temperature- environmental inadequacy, etc. In this paper, focusing on some examples, we explore the characteristics of 3D laser scanning technology used in the micro-geomorphology survey and discuss its advantages and limitations. We also describe the data processing methods and results. This includes the deformation values of the co-seismic surface ruptures or the merged impressions by 3D scanning data and full view photo. In conclusion, 3D laser scanning has a wide range of prospects in micro-geomorphology surveying and earthquake investigation. We then make some proposals such as using wireless transmission that can improve its environmental adaptability. © 2009 Copyright SPIE - The International Society for Optical Engineering.
AUTHOR KEYWORDS: 3D laser scan; Deformation value; Merged impression; Micro-geomorphology survey; Ms8.0 Wenchuan earthquake
INDEX KEYWORDS: 3D laser scan; 3D laser scanners; 3D Laser scanning; 3D-laserscanning technology; 3D-scanning; Data processing methods; Environmental adaptability; High temperature; Merged impression; MS8.0Wenchuan earthquake; Quantitative analysis; Scientific investigation; Structure destruction; Surface ruptures; Survey methods; Varying lights; Wealth of information; Wireless transmissions; Computer crime; Data processing; Deformation; Earthquakes; Geographic information systems; Geomorphology; Landforms; Laser applications; Lasers; Mergers and acquisitions; Pattern recognition; Processing; Remote sensing; Scanning; Surface structure; Surveys; Three dimensional
REFERENCES: Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
Chen, Guihua, Several issues in the quantitative analysis of co-seismic surface rupture produced by reverse faults: A case study from the 2008 Wenchuan earthquake, Dizhen Dizhi, 30, 3, pp. 674-682, (2008); 
Surveying and Mapping of Geology and Mineral Resource, (2005); 
Remondi, Benjamin W., Performing Centimeter‐Level Surveys in Seconds with GPS Carrier Phase: Initial Results, Navigation, Journal of the Institute of Navigation, 32, 4, pp. 386-400, (1985); 
Chevalier, Marie Luce, Slip-rate measurements on the Karakorum Fault may imply secular variations in fault motion, Science, 307, 5708, pp. 411-414, (2005); 
Ren, Zhikun, Micro geomorphology of Zemuhe fault surveyed by virtue deferential GPS, Earthquake, 27, 3, pp. 97-104, (2007); 
Zhang, Junlong, Study on neotectonic characteristics and its evolution in northwestern Hainan Island, Earthquake, 28, 3, pp. 85-94, (2008); 
Journal of Astronautic Metrology and Measurement, (2005); 
Engineering of Surveying and Mapping, (2005); 
Trimble Gx Series Scanner User Guide, (2008)
SPONSORS: Natl. Lab. Multi-spectral Inf. Process. Technol., Huazhong University of Science and Technology, National Natural Science Foundation of China, China Three Gorges University
CONFERENCE NAME: MIPPR 2009 - Remote Sensing and GIS Data Processing and Other Applications: 6th International Symposium on Multispectral Image Processing and Pattern Recognition
CONFERENCE DATE: 2009-10-30 through 2009-11-01
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wu, W., Li, W., Wang, L., Nie, J., Zhang, B.
AUTHOR FULL NAMES: Wu, Wei (57198678845); Li, Wenbo (57207126023); Wang, Lei (57070582900); Nie, Juan (59438820800); Zhang, Baojun (57199726160)
57198678845; 57207126023; 57070582900; 59438820800; 57199726160
Assessment of the information preservation of data fusion methods based on high spatial resolution remotely sensed imageries
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7494, art. no. 74942J, Cited 0 times.
DOI: 10.1117/12.832396
https://www.scopus.com/inward/record.uri?eid=2-s2.0-71449104844&doi=10.1117%2F12.832396&partnerID=40&md5=242b5be1b3966e1cd33bc53e5463045d

AFFILIATIONS: National Disaster Reduction Center of China, Beijing, China; Institute of Intelligent Machines Chinese Academy of Sciences, Hefei, Anhui, China
ABSTRACT: Spectral information and spatial information of high spatial resolution remotely sensed data are useful for natural disasters remote sensing application. At present, spatial resolution and spectral information of high spatial resolution remotely sensed images are contradictory factors. Image fusion methods can balance the contradictions between spatial resolution and spectral information. In this paper, three image fusion methods such as SFIM, WT and MBT have been employed to fuse either individual band multispectral images with panchromatic of FORMOSAT-2 in disaster area of Wenchuan earthquake, Sichuan province, China. Qualitative evaluation and quantitative assessment confirm that MBT can gain more texture information from panchromatic image and MBT is a good choice when image fusion is used in accurate ploting or locating the heavy disaster area and analyzing the loss of different disaster-bearing body using visual interpretation. While WT can preserve more spectral characteristic of FORMOSAT-2 multispectral images and WT will be a suitable image fusion method for disaster remote sensing applications when more spectral information is need. © 2009 Copyright SPIE - The International Society for Optical Engineering.
AUTHOR KEYWORDS: Assessment; Data fusion; FORMOSAT-2; Modified Brovey transform; Natural disaster; Remote sensing; SFIM
INDEX KEYWORDS: Brovey transforms; Data fusion methods; Disaster areas; FORMOSAT-2; High spatial resolution; Image fusion methods; Information preservations; Modified Brovey transform; Multispectral images; Natural disasters; Panchromatic images; Qualitative evaluations; Quantitative assessments; Remote sensing applications; Remotely sensed data; Remotely sensed imagery; Remotely sensed images; Sichuan province; Spatial informations; Spatial resolution; Spectral characteristics; Spectral information; Texture information; Visual interpretation; Wenchuan Earthquake; Disasters; Image acquisition; Image resolution; Information fusion; Pattern recognition; Remote sensing; Image fusion
REFERENCES: Zhang, Y., A new merging method and its spectral and spatial effects, International Journal of Remote Sensing, 20, 10, pp. 2003-2014, (1999); 
Tu, Teming, Modified smoothing-filter-based technique for IKONOS-QuickBird image fusion, Optical Engineering, 45, 6, (2006); 
Malpica, José Antonio, Hue adjustment to IHS pan-sharpened IKONOS imagery for vegetation enhancement, IEEE Geoscience and Remote Sensing Letters, 4, 1, pp. 27-31, (2007); 
Kalpoma, Kazi A., Image fusion processing for IKONOS 1-m color imagery, IEEE Transactions on Geoscience and Remote Sensing, 45, 10, pp. 3075-3086, (2007); 
Pohl, Christine, Review article Multisensor image fusion in remote sensing: Concepts, methods and applications, International Journal of Remote Sensing, 19, 5, pp. 823-854, (1998); 
Liu, Jianguo, Smoothing Filter-based Intensity Modulation: A spectral preserve image fusion technique for improving spatial details, International Journal of Remote Sensing, 21, 18, pp. 3461-3472, (2000); 
Zhou, J., A wavelet transform method to merge Landsat TM and SPOT panchromatic data, International Journal of Remote Sensing, 19, 4, pp. 743-757, (1998); 
Pradhan, Pushkar S., Estimation of the number of decomposition levels for a wavelet-based multiresolution multisensor image fusion, IEEE Transactions on Geoscience and Remote Sensing, 44, 12, pp. 3674-3686, (2006); 
Li, Wenbo, Water extraction based on self-fusion of ETM+ Remote sensing data and normalized ratio index, Proceedings of SPIE - The International Society for Optical Engineering, 6419, (2006); 
Vijayaraj, Veeraraghavan, Quantitative analysis of pansharpened images, Optical Engineering, 45, 4, (2006)
SPONSORS: Natl. Lab. Multi-spectral Inf. Process. Technol., Huazhong University of Science and Technology, National Natural Science Foundation of China, China Three Gorges University
CONFERENCE NAME: MIPPR 2009 - Multispectral Image Acquisition and Processing: 6th International Symposium on Multispectral Image Processing and Pattern Recognition
CONFERENCE DATE: 2009-10-30 through 2009-11-01
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhang, J., Zeng, Y., Xie, W., Wang, T.
AUTHOR FULL NAMES: Zhang, Jixian (56058752000); Zeng, Yu (36987208000); Xie, Wenhan (16644256400); Wang, Tao (57199032477)
56058752000; 36987208000; 16644256400; 57199032477
Decision making based on earth observation technology
(2009), pp. 497 - 530, Cited 0 times.
DOI: 10.1007/978-1-4419-0050-0_19
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892213078&doi=10.1007%2F978-1-4419-0050-0_19&partnerID=40&md5=2aab227f2eade6b7d9f5efec67e9bc19

AFFILIATIONS: Chinese Academy of Surveying and Mapping, Beijing, China
ABSTRACT: Spatial data derived from earth observation are applied in domains as varied as agriculture, environmental resource management, territorial planning, etc. They are used to learn about the environment and to assist in making management decisions. Earth observation has been widely used in China (Chen 1999). Disaster monitoring and evaluation based on remote sensing has played an increasingly important role in the government's emergency management. In response of the Wenchuan Earthquake, high resolution imagery was used for geological hazard monitoring, influence evaluation and loss statistics. There are severe flood hazards in southern China each summer, leading to the establishment of the data exchange center for monitoring and evaluating the flood hazards in related governmental sectors. The remote sensing data and the monitoring results can be automatically uploaded to the information system for decision makers. Large scale management and dynamic monitoring of natural resources and ecosystems have been implemented in China under the support of quantitative remote sensing and GIS techniques. This chapter presents the working experiences of China in response to unexpected disaster events, evaluation of seasonal hazards and dynamic monitoring of natural resources. © 2009 Springer Science+Business Media, LLC.
REFERENCES: Abel, David J., Towards integrated geographical information processing, International Journal of Geographical Information Science, 12, 4, pp. 353-371, (1998); 
Proceedings of the 20th International Cartographic Conference, (2001); 
Shupeng, Chen, Geographical data handling and GIS in China, International Journal of Geographical Information Systems, 1, 3, pp. 219-228, (1987); 
Geographical Dimensions of Terrorism, (2003); 
Proceedings of Ieas 97 and Iwgis 97, (1997); 
Nichol, Janet Elizabeth, Application of high-resolution stereo satellite images to detailed landslide hazard assessment, Geomorphology, 76, 1-2, pp. 68-75, (2006); 
Jia, Wenjue, Web service based web feature service, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 35, (2004); 
Geographic Information Systems and Science, (2001); 
Yue, Tianxiang, Digital simulation of population density in China, Dili Xuebao/Acta Geographica Sinica, 58, 1, pp. 17-24, (2003); 
Resources Environment Engineerining, (2007)
PUBLISHER: Springer US
DOCUMENT TYPE: Book chapter
PUBLICATION STAGE: Final

Fan, J., Liu, Y., Ren, Y., Hu, L.
AUTHOR FULL NAMES: Fan, Junchuan (36004614900); Liu, Yalan (8937210700); Ren, Yuhuan (59157824300); Hu, Leiqiu (55642592500)
36004614900; 8937210700; 59157824300; 55642592500
Interpretation feature database design for typical objects based on remote sensing images after Wenchuan earthquake
(2009), 2, pp. 790 - 795, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866078673&partnerID=40&md5=726dc646f6a817776da454476ca9227a

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Due to the different image understanding of earthquake damage, this study tries to build up the image interpretation feature database for typical objects based on remote sensing images after Wenchuan earthquake. Based on a large amount of different sources of remote sensing imageries retrieved right after the Wenchuan earthquake, we propose the study on design and construction of remotely sensed image interpretation feature database for typical objects on earth surface influenced by the earthquake. We divide these typical objects into three categories, which are lifeline engineering, buildings and secondary disasters. And then, field investigation in the disaster area was carried out in order to acquire the corresponding photos for the typical objects. At last, for the sake of image interpretation, the description models of the selected typical objects including feature information and expertise are designed. The database is designed based Oracle database and based on internet user interface, which can be used for data query, uploading, and editing by users. Our work illustrates the importance to share the image interpretation knowledge in the database with other researchers. Copyright © (2009) by the Asian Association on Remote Sensing.
AUTHOR KEYWORDS: Earthquake; Feature database; Image interpretation; Remote sensing; Typical objects
INDEX KEYWORDS: Data query; Description model; Design and construction; Disaster areas; Earth surface; Earthquake damages; Feature database; Feature information; Field investigation; Image interpretation; Lifeline engineering; Objects-based; Oracle database; Remote sensing imagery; Remote sensing images; Remotely sensed images; Typical objects; Wenchuan Earthquake; Database systems; Image analysis; Image reconstruction; Numerical control systems; Remote sensing; User interfaces; Earthquakes
REFERENCES: Journal of Remote Sensing, (2008); 
Wenchuan Earthquake Based on High Resolution Remote Sensing Images, (2009); 
Journal of Jilin University, (2007); 
Geomatics World, (2006); 
Research of Sample Extraction and Image Sample Database for High Resolution Remote Sensing Image, (2008); 
Computer Application, (2005)
CONFERENCE NAME: 30th Asian Conference on Remote Sensing 2009, ACRS 2009
CONFERENCE DATE: 2009-10-18 through 2009-10-23
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Qiang, Z.-J., Ma, A., Zeng, Z., Wang, J., Xie, H.
AUTHOR FULL NAMES: Qiang, Zuji (7005448508); Ma, Ai'nai (7102112401); Zeng, Zuoxun (7402647514); Wang, Jie F. (7701310371); Xie, Hongjie (7401672948)
7005448508; 7102112401; 7402647514; 7701310371; 7401672948
Study on short-term and imminent earthquake prediction using the satellite thermal infrared technique
(2009), art. no. 5361915, pp. 372 - 381, Cited 6 times.
DOI: 10.1109/COINFO.2009.70
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951434605&doi=10.1109%2FCOINFO.2009.70&partnerID=40&md5=aa5773e98f7e66bbac86f7f9d5d21ae6

AFFILIATIONS: Center for Research of Geological Hazards, China Earthquake Administration, Beijing, China; Institute of Remote Sensing and GIS, Peking University, Beijing, China; Center for Research of Geological Hazards, China University of Geosciences, Beijing, Beijing, China; Department of Environmental Science and Engineering, The University of Texas at San Antonio, San Antonio, TX, United States
ABSTRACT: This paper provides a brief description of the basic principles of satellite thermal infrared brightness temperature anomaly and overview of the meteorological satellite, analyzes the building of the remote sensing information model for short-term and imminent earthquake prediction and indicates that this technique has the practical application prospect through 11 years of experimental prediction practice and several cases of successful earthquake prediction. © 2009 IEEE.
AUTHOR KEYWORDS: Brightness temperature anomaly; Satellite thermal infrared; Short-term and imminent earthquake prediction; Sichuan Wenchuan earthquake
INDEX KEYWORDS: Brightness temperature anomaly; Brightness temperatures; Earthquake prediction; Sichuan; Thermal infrared; Wenchuan Earthquake; Earthquakes; Information science; Infrared radiation; Remote sensing; Satellites; Temperature; Forecasting
REFERENCES: Proc Acad Sci USSR, (1988); 
Detection of Abnormal Heat Prior to the Earthquake Using Time Space Interpolation and Material Standardization, (2005); 
Proceeding of the Twelfth International Conference Applied Geologic Remote Sensing, (1997); 
Remote Sensing Information Model, (1997); 
Introduction to Dynamic Geomorphology, (2008); 
Chinese Science Bulletin, (1991); 
Progress and Trend of the Seismic Science, (1992); 
Earthquake and Satellite Thermal Infrared Anomaly Gas Heat Theory Collection of Thesis of Peking University International Geology Science Academic Seminar, (1998); 
Qiang, Zuji, Satellitic thermal infrared brightness temperature anomaly image-short-term and impending earthquake precursors, Science in China, Series D: Earth Sciences, 42, 3, pp. 313-324, (1999); 
Earth Science Frontiers, (2001)
CONFERENCE NAME: 4th International Conference on Cooperation and Promotion of Information Resources in Science and Technology, COINFO 2009
CONFERENCE DATE: 2009-11-21 through 2009-11-23
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, S., Cui, L., Wu, L., Wang, Z.
AUTHOR FULL NAMES: Liu, Shanjun (54409091600); Cui, Lihua (36016270500); Wu, Lixin (55714061400); Wang, Zhi (55933443100)
54409091600; 36016270500; 55714061400; 55933443100
Analysis on the water vapor anomaly before Wenchuan earthquake based on MODIS data
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418102, pp. II412 - II415, Cited 6 times.
DOI: 10.1109/IGARSS.2009.5418102
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951178982&doi=10.1109%2FIGARSS.2009.5418102&partnerID=40&md5=a4914a4636b6e4aa359d7f8c63507113

AFFILIATIONS: Institute for Geo-informatics and Digital Mine Research, Northeastern University, Shenyang, Liaoning, China; College of Resources and Environment, Hebei Polytechnic University, Tangshan, Hebei, China; Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing, China
ABSTRACT: Remote sensing data have been used to analyze the changes in column water vapor in response to the Wenchuan Ms 8.0 earthquake, occurred in China on May 12, 2008. Anomalous changes in water vapor content have been found over the epicentral and surrounding regions 11 days before the earthquake. The sudden increase in water vapor content in the atmosphere before the earthquake may be attributed to the increase in evaporation due to increase in land surface temperature. The brightness temperature of land surface around the epicenter is found to increase one day before the increase in the water vapor content. ©2009 IEEE.
AUTHOR KEYWORDS: Column water vapor anomaly; Earthquake; MODIS; Remote sensing
INDEX KEYWORDS: Brightness temperatures; Column water vapor anomaly; Land surface; Land surface temperature; MODIS; Remote sensing data; Surrounding regions; Water vapor contents; Wenchuan Earthquake; Atmospheric temperature; Atmospherics; Earthquakes; Geology; Radiometers; Remote sensing; Spectrometers; Surface measurement; Water content; Water vapor
REFERENCES: Proc Acad Sci USSR, (1988); 
Tronin, A. A., Satellite thermal survey—A new tool for the study of seismoactive regions, International Journal of Remote Sensing, 17, 8, pp. 1439-1455, (1996); 
Qiang Zuji, The thermal infrared anomaly of Meteosat-precursor of impending earthquakes, pp. 1005-1013, (1993); 
J Ind Geophys Union, (2005); 
Tramutoli, Valerio, Assessing the potential of thermal infrared satellite surveys for monitoring seismically active areas: The case of Kocaeli (İzmit) earthquake, August 17, 1999, Remote Sensing of Environment, 96, 3-4, pp. 409-426, (2005); 
Dey, Sagnik, Anomalous changes in column water vapor after Gujarat earthquake, Advances in Space Research, 33, 3, pp. 274-278, (2004); 
Liu, Shanjun, Study on mechanism of satellite IR anomaly before tectonic earthquake, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 5060-5063, (2005); 
Wu, Lixin, The experiment evidences for tectonic earthquake forecasting based on anomaly analysis on satellite infrared image, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2158-2162, (2006)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhou, W., Mao, F., Liu, Z., Li, Q., Fu, Q.
AUTHOR FULL NAMES: Zhou, Wensheng (55475935500); Mao, Feng (57206370879); Liu, Ze (56101487400); Li, Qiang (56301133000); Fu, Qiang (58430184900)
55475935500; 57206370879; 56101487400; 56301133000; 58430184900
Research and application of planning support system based on 3S technique for post-disaster reconstruction after Wenchuan earthquake in China
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418174, pp. II666 - II669, Cited 3 times.
DOI: 10.1109/IGARSS.2009.5418174
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951134091&doi=10.1109%2FIGARSS.2009.5418174&partnerID=40&md5=7a8788d5d0c3d0f890a78049deac8984

AFFILIATIONS: School of Architecture, Tsinghua University, Beijing, China
ABSTRACT: This paper first discusses the technical route for applying 3S technique in post-disaster reconstruction planning, and gives the general framework of the post-disaster reconstruction planning supporting system (PRPSS). Furthermore the database model and the function model of PRPSS is analyzed. At last the paper gives the technical methods to achieve the system and the application cases of the system in the post-disaster reconstruction planning. The practice indicates that PRPSS developed with 3S technique can be used to many aspects of the post-disaster reconstruction planning, such as the information extraction of geological disasters, disaster situation assessment, site selection analysis, thematic mapping and so on. The post-disaster reconstruction planning results can be made more scientific and rational by using PRPSS. ©2009 IEEE.
AUTHOR KEYWORDS: 3S technique; Planning support system; Wenchuan earthquake
INDEX KEYWORDS: 3S techniques; Database models; Function models; Geological disaster; Information Extraction; Planning support systems; Research and application; Situation assessment; Supporting systems; Technical route; Thematic mapping; Wenchuan Earthquake; Earthquakes; Geology; Remote sensing; Site selection; Repair
REFERENCES: Science and Technology Review, (2008); 
undefined, (2010); 
14th World Conference on Earthquake Engineering 2008, (2010); 
Geo Information Science, (2008); 
Journal of Remote Sensing, (2008); 
14th World Conference on Earthquake Engineering 2008, (2010)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, X.-Z., You, Y., Cui, P., Liu, J.-F.
AUTHOR FULL NAMES: Chen, Xingzhang (25623240400); You, Yong (35811595800); Cui, Peng (56706923500); Liu, Jinfeng (59454532200)
25623240400; 35811595800; 56706923500; 59454532200
Characteristics and risk analysis of Qinglin debris flow induced by "5.12" Wenchuan earthquake in Beichuan County, Sichuan, China
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418101, pp. II408 - II411, Cited 3 times.
DOI: 10.1109/IGARSS.2009.5418101
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951112258&doi=10.1109%2FIGARSS.2009.5418101&partnerID=40&md5=eaf44c1fce5b7e05b6caf8cc802ec9bb

AFFILIATIONS: School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: "5.12" Wenchuan Earthquake occurred in western Sichuan, China on May 12, 2008. Many potential geo-hazards, induced by this earthquake, were developing. Qinglin gully had no recorders of debris flow before the earthquake and has been the most serious one after that. Based on field survey, we studied the characteristics of debris flow in Qinglin gully by using GIS technology. Results show that three large scale landslides with 0.76million m3, 0.94million m3 and 12million m3 in volume respectively, induced by the earthquake, were main sources of the debris flow. The debris flow, induced by intensive rainfall on 24 September 2008, was a large scale turbulent one. We analyzed the risk of Qinglin debris flow using the debris flow risk assessment model of momentum principle. Results illuminate that Qinglin gully has the characteristics of high frequency and large scale and severe risks after the earthquake. It was also found, even if vegetation was lush, big debris flows could occur due to background changing of disasters in quake-hit area. Consequently, the next researches should focus on potential debris flows, which is of great significance to post-disaster restoration and reconstruction. ©2009 IEEE.
AUTHOR KEYWORDS: "5.12" Wenchuan earthquake; GIS technology; Potential debris flow; Risk analysis
INDEX KEYWORDS: Debris flows; Field surveys; GIS technology; High frequency; Intensive rainfall; Large-scale landslides; Potential debris flow; Sichuan , China; Wenchuan Earthquake; Western Sichuan; Debris; Earthquakes; Geographic information systems; Geology; Remote sensing; Risk analysis; Risk management; Safety factor; Risk assessment
REFERENCES: Journal of Mountain Science, (2008); 
Cui, Peng, Relationships between antecedent rainfall and debris flows in Jiangjia Ravine, China, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, pp. 3-10, (2007); 
Chen, Xiaoqing, Optimal timing for the control of debris flow in Wenchuan Earthquake area, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 125-130, (2009); 
Rickenman, Dieter, Empirical relationships for debris flows, Natural Hazards, 19, 1, pp. 47-77, (1999); 
Journal of Natural Disasters, (1993); 
Chinese Science Bulletin, (2003); 
Lin, Pingsien, Assessing debris-flow hazard in a watershed in Taiwan, Engineering Geology, 66, 3-4, pp. 295-313, (2002); 
Zhuang, Jianqi, Hazard assessment of debris flow valleys along Dujiangyan-Wenchuan highway after '5·12' Wenchuan devastating earthquake, Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41, 3, pp. 131-139, (2009); 
Jakob, Matthias, A size classification for debris flows, Engineering Geology, 79, 3-4, pp. 151-161, (2005); 
Proceedings of the Second Chinese Conference on Debris Flow, (1991)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Shao, Y., Wang, S., Tian, W., Gong, H., Zhang, F.
AUTHOR FULL NAMES: Shao, Yun (7201598892); Wang, Shiang (34882511900); Tian, Wei (57199662993); Gong, Huaze (24080345500); Zhang, Fengli (55702260900)
7201598892; 34882511900; 57199662993; 24080345500; 55702260900
Fast extracting and change detection of dammed lakes using high-resolution SAR images: A case study of Tangjiashan Dammed Lake
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418084, pp. II349 - II352, Cited 8 times.
DOI: 10.1109/IGARSS.2009.5418084
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951111069&doi=10.1109%2FIGARSS.2009.5418084&partnerID=40&md5=db5f41f11bc226a957035e4baf7faad0

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Wenchuan Earthquake has caused many huge landslides in the rivers in Sichuan Province. Synthetic Aperture Radar (SAR) technology played an irreplaceable role in rapid response to Wenchuan Earthquake monitoring and damage assessment. In this paper, Tangjiashan Dammed Lake was taken as a case study area for fast extracting and change detection with continuously acquired multi-temporal highresolution SAR images. By June 12, 2008, we had identified dozens of dammed lakes in the area heavily affected by the Wenchuan Earthquake using high-resolution SAR images. In order to make a scientific evaluation of the disaster situation and provide efficient and instantaneous rescue action in the future, an effective method was developed for rapid extraction and change detection of dammed lakes. ©2009 IEEE.
AUTHOR KEYWORDS: Change detection; Fast extracting; High-resolution SAR; Tangjiashan Dammed Lake; Wenchuan Earthquake
INDEX KEYWORDS: Change detection; Damage assessments; Fast extracting; High-resolution SAR; Multi-temporal; Rapid extraction; Rapid response; Sichuan province; Study areas; Wenchuan Earthquake; Damage detection; Earthquakes; Geology; Image processing; Imaging systems; Lakes; Remote sensing; Signal detection; Synthetic aperture radar
REFERENCES: Radar for Earth Obersavation Theory and Applications M, (2000); 
Radar Remote Sensing Applications in China, (2001); 
Compilation of China Natural Geography, (1984); 
Chang, Dongxia, A genetic algorithm with gene rearrangement for K-means clustering, Pattern Recognition, 42, 7, pp. 1210-1222, (2009); 
2009 Urban Remote Sensing Joint Event, (2009)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jeong, B.-P., Hosokawa, M., Zama, S., Takizawa, O.
AUTHOR FULL NAMES: Jeong, Byeongpyo (23492727300); Hosokawa, Masafiimi (7202009813); Zama, Shinsaku (6603746267); Takizawa, Osamu (57224836019)
23492727300; 7202009813; 6603746267; 57224836019
Estimation of seismic intensity due to the 2008 Wenchuan earthquakt
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418099, pp. II400 - II403, Cited 1 times.
DOI: 10.1109/IGARSS.2009.5418099
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951105701&doi=10.1109%2FIGARSS.2009.5418099&partnerID=40&md5=1eb9d2d5f9b363bf464ae799c68b46ce

AFFILIATIONS: Disaster Management and Mitigation Group, National Institute of Information and Communications Technology, Koganei, Tokyo, Japan; National Research Institute of Fire and Disaster, Chofu, Tokyo, Japan
ABSTRACT: The great earthquake that occurred in Sichuan, China on May 12, 2008 claimed about 70,000 precious lives. It is necessary to quickly pinpoint the areas where extensive damage is expected when such a big earthquake occurs and quickly input limited resources. As an attempt to instantaneously pinpoint the areas where extensive damage is expected, we classified landform of Sichuan Province, China using SRTM-3 and estimated the amplification factor and distribution of seismic intensity of Great Wenchuan Earthquake(2008) based on our results. ©2009 IEEE.
AUTHOR KEYWORDS: Landform classification; Seismic intensity; Site amplification factor; SRTM-3; Wenchuan earthquake
INDEX KEYWORDS: Amplification factors; Great earthquake; Landform classification; Seismic intensity; Sichuan , China; Sichuan province; Site amplification; Wenchuan Earthquake; Earthquake effects; Geology; Landforms; Remote sensing; Seismology; Tracking radar; Amplification
REFERENCES: Butsuri Tansa, (1995); 
Report of National Research Institute of Fire and Disaster, (1996); 
Tool of Earthquake Damage Estimation, (2001); 
Report of National Research Institute of Fire and Disaster, (2004); 
Report of National Research Institute of Fire and Disaster, (2005); 
Proc 2nd Asia Conf Earthq Eng, (2006); 
Geomorphological Basis for Map Reading Vol 1 Kokon Shoin Tokyo, (1997); 
Instructions for the GIS Based 7 5 Arc Second Japan Engineering Geomorphologic Classification Map 7 5 Arc Second Jegm Ver 2 for Niigata Region, (2010); 
Shuttle Radar Topography Mission; 
J Struct Constr Eng Aij, (1999)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tu, Y., Li, Q., Liu, R.
AUTHOR FULL NAMES: Tu, Yong (35932939900); Li, Qi (56226812100); Liu, Runda (35242799900)
35932939900; 56226812100; 35242799900
A geospatial information portal for emergency management of natural disasters
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 2, art. no. 5418100, pp. II404 - II407, Cited 6 times.
DOI: 10.1109/IGARSS.2009.5418100
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951094276&doi=10.1109%2FIGARSS.2009.5418100&partnerID=40&md5=868a1ca771361ea2b3fc7a4610feb41d

AFFILIATIONS: Peking University, Beijing, China; Institute of Scientific and Technical Information of China, Beijing, China
ABSTRACT: A reference geospatial information portal (GIP) architecture is designed for emergency management, which will bridge the gaps between different organizations and communities that have heretofore shared geospatial information only with great difficulties. The mode and its workflow are examined as well. In its implementation, general metadata fields are designated to describe the emergency information resources falling into two stages respectively. The portal provides the basis for an open, vendor-neutral facility that is intended to be an entry point of discovery for geospatial content in the context of designing and implementing the spatial data infrastructure for emergency management. ©2009 IEEE.
AUTHOR KEYWORDS: Emergency management; Geospatial information portal; Wenchuan earthquake
INDEX KEYWORDS: Emergency information; Emergency management; Entry point; Geo-spatial; Geospatial information; Natural disasters; Spatial data infrastructure; Two stage; Wenchuan Earthquake; Bridges; Civil defense; Disasters; Earthquakes; Geology; Information science; Management; Metadata; Remote sensing; Information dissemination
REFERENCES: Geospatial Portal Reference Architecture, (2004); 
Maguire, David J., The emergence of geoportals and their role in spatial data infrastructures, Computers, Environment and Urban Systems, 29, 1 SPEC.ISS., pp. 3-14, (2005); 
Li, Qi, A unified metadata information management framework for digital city, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 4422-4424, (2004); 
Geospatial One Stop Encouraging Partnerships to Enhance Access to Geospatial Information, (2004)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jiang, K., Wang, C., Zhang, H., Chen, W., Zhang, B., Tang, Y., Wu, F.
AUTHOR FULL NAMES: Jiang, Kai (57197772474); Wang, Chao (55141316100); Zhang, Hong (56179236500); Chen, Wei (37051854800); Zhang, Bo (57199725987); Tang, Yixian (7404592033); Wu, Fan (57104120200)
57197772474; 55141316100; 56179236500; 37051854800; 57199725987; 7404592033; 57104120200
Damage analysis of 2008 Wenchuan earthquake using SAR images
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 5, art. no. 5417722, pp. V108 - V111, Cited 11 times.
DOI: 10.1109/IGARSS.2009.5417722
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950955095&doi=10.1109%2FIGARSS.2009.5417722&partnerID=40&md5=46236b3d120ac197c47f3eba088b30b2

AFFILIATIONS: East China Research Institute of Electronic Engineering, Hefei, Anhui, China; Center for Earth Observation and Digital Earth, Haidian, Beijing, China; Southwest Petroleum University China, Chengdu, Sichuan, China
ABSTRACT: On May 12, 2008, Wenchuan earthquake (Ms 8.0) occurred in Sichuan, Southwestern China. This catastrophe caused severe damage of constructions in urban and rural areas, and fundamental infrastructure, such as those facilities of factories, electrical power, telecommunication and transportation, etc. The earthquake also resulted in many geological phenomena, i.e. landslide, debris flow, landslide lakes, etc. which also triggered off damage and threat. The airborne campaigns were performed after the earthquake with high-resolution SAR system for rescue and relief effort and damage assessment. In this study, damage of various facilities was described and analyzed using airborne SAR images acquired during the campaigns. The results were verified with ground truth investigation. The results showed the role of SAR data in earthquake damage assessment. ©2009 IEEE.
AUTHOR KEYWORDS: Airborne; Field validation; High resolution; Interpretation; Multi-band; SAR
INDEX KEYWORDS: Airborne SAR; Damage analysis; Damage assessments; Debris flows; Earthquake damages; Electrical power; Field validation; Ground truth; High resolution; High-resolution SAR; Multiband; Relief efforts; SAR data; SAR Images; Sichuan; Urban and rural areas; Wenchuan Earthquake; Debris; Earthquakes; Geology; Landslides; Remote sensing; Rural areas; Damage detection
REFERENCES: Wang, Chao, Disaster phenomena of Wenchuan earthquake in high resolution airborne synthetic aperture radar images, Journal of Applied Remote Sensing, 3, 1, (2009); 
Wang, Xiaoqing, Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake, Earthquake, 29, 1, pp. 174-181, (2009); 
Journal of Engineering Geology, (2008)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, P., Xu, H., Liu, S., Guo, J.
AUTHOR FULL NAMES: Li, Peijun (56040925600); Xu, Haiqing (55376023100); Liu, Shuang (57191661318); Guo, Jiancong (26664502700)
56040925600; 55376023100; 57191661318; 26664502700
Urban building damage detection from very high resolution imagery using one-class SVM and spatial relations
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 5, art. no. 5417719, pp. V112 - V114, Cited 17 times.
DOI: 10.1109/IGARSS.2009.5417719
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950950208&doi=10.1109%2FIGARSS.2009.5417719&partnerID=40&md5=e802788031436d85cc3ddbbd892e258a

AFFILIATIONS: Peking University, Beijing, China
ABSTRACT: In this paper, we propose a method for urban building damage detection from multitemporal high resolution images using spectral and spatial information combined. Given the spectral similarity between damaged and undamaged areas in the images, two spatial features are used in the damage detection, i.e. invariant moments and LISA (local indicator of spatial association) index. These two spatial features were computed for each image object, which is produced by image segmentation. The One-Class Support Vector Machine (OCSVM), a recently developed one-class classifier was used to classify the multitemporal data to obtain building damage information. The uses of spectral data alone and plus obtained spatial features for building damage detection were separately evaluated using bitemporal Quickbird images acquired in Dujiangyan area of China, which was heavily hit by the Wenchuan earthquake. The results show that the combined use of spectral and spatial features significantly improved the damage detection accuracy, compared to that of using spectral information alone. ©2009 IEEE.
AUTHOR KEYWORDS: Damage detection; High resolution imagery; Invariant moments; LISA; OCSVM
INDEX KEYWORDS: Building damage; High resolution image; High resolution imagery; Image objects; Invariant moment; Invariant moments; Multi-temporal; Multi-temporal data; One class-SVM; One-class classifier; One-class support vector machine; QuickBird images; Spatial features; Spatial informations; Spatial relations; Spectral data; Spectral information; Spectral similarity; Urban buildings; Very high resolution; Wenchuan Earthquake; Geology; Image segmentation; Information use; Remote sensing; Support vector machines; Damage detection
REFERENCES: Li, Peijun, Urban building damage detection from very high resolution imagery using one-class SVM and spatial relations, International Geoscience and Remote Sensing Symposium (IGARSS), 5, pp. V112-V114, (2009); 
Sanchez-Hernandez, Carolina, One-class classification for mapping a specific land-cover class: SVDD classification of fenland, IEEE Transactions on Geoscience and Remote Sensing, 45, 4, pp. 1061-1072, (2007); 
Muñoz-Marí, Jordi, A support vector domain description approach to supervised classification of remote sensing images, IEEE Transactions on Geoscience and Remote Sensing, 45, 8, pp. 2683-2692, (2007); 
Technical Report, (1999); 
Li, Peijun, Multispectral image segmentation by a multichannel watershed-based approach, International Journal of Remote Sensing, 28, 19, pp. 4429-4452, (2007); 
Najman, Laurent, Geodesic saliency of watershed contours and hierarchical segmentation, IEEE Transactions on Pattern Analysis and Machine Intelligence, 18, 12, pp. 1163-1173, (1996); 
Hu, Ming Kuei, Visual Pattern Recognition by Moment Invariants, IRE Transactions on Information Theory, 8, 2, pp. 179-187, (1962); 
Anselin, Luc E., Local Indicators of Spatial Association—LISA, Geographical Analysis, 27, 2, pp. 93-115, (1995)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Song, X., Shan, X., Qu, C., Zhang, G., Guo, L., Zhang, G.
AUTHOR FULL NAMES: Song, Xiaogang (23006898300); Shan, Xianjian (7101712284); Qu, Chunyan (8204955900); Zhang, Guifang (55819500900); Guo, Limin (26030934000); Zhang, Guohong (14010226900)
23006898300; 7101712284; 8204955900; 55819500900; 26030934000; 14010226900
Coseismic surface deformation caused by the Wenchuan M8 earthquake from InSAR data analysis
(2009) International Geoscience and Remote Sensing Symposium (IGARSS), 3, art. no. 5418143, pp. III69 - III72, Cited 0 times.
DOI: 10.1109/IGARSS.2009.5418143
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950919717&doi=10.1109%2FIGARSS.2009.5418143&partnerID=40&md5=59127cedb675bc92e70230ce06b2e361

AFFILIATIONS: State Key Laboratory of Earthquake Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: The D-InSAR technology is used to aquired seven belts of coseismic surface deformation of Sichuan M8 earthquake of 12 May 2008 from the ALOS/PALSAR satellite data of Japan. The result covers Yinxiu, Dujiangyan, Wenchuan, Moxian, Beichuan, Pingwu and Qingchuan county, each 500km in north-south and 70km in east-west. The investigation indicates that the surface rupture zone caused by the earthquake coincides the Beichuan-Yingxiu fault, extending from nearby the epicenter southwest of the Yingxiu town to north of the Suhe, Qingchuan county for about 230km. The northwest wall of the seismogenic fault has uplifted, exhibiting a dominant thrust motion. The maximum relative LOS displacement at the epicenter reaches 260cm. A swell of LOS 120-180cm displacements is present from Beichuan to Pingtong. Another uplifted belt of displacements 70-80cm occurs nearby north of Suhe, Qingchuan. Around Ya'an and Mount Emeishan, and from Shehong to north of Chongqing, there is a large area of subsidence. In Chongqing and its south is seen a small uplifted area of 20-30cm. From Qingchuan, eastward to Guangyuan and Ningqiang, uplift amplitudes are 60-70cm. The whole area of the deformation filed is fairly large, even in the Sichuan basin occurs surface deformation of different degrees. ©2009 IEEE.
AUTHOR KEYWORDS: Co-seismic deformation field; D-InSAR; Earthquake activity; Wenchuan earthquake
INDEX KEYWORDS: ALOS/PALSAR; Chongqing; Coseismic deformation; D-inSAR; Earthquake activity; InSAR data; Satellite data; Seismogenic faults; Sichuan; Sichuan Basin; Surface deformation; Surface ruptures; Uplifted areas; Wenchuan Earthquake; Deformation; Geodetic satellites; Geology; Motion compensation; Remote sensing; Earthquakes
REFERENCES: Science in China Series D, (2003); 
Massonnet, Didier, The displacement field of the Landers earthquake mapped by radar interferometry, Nature, 364, 6433, pp. 138-142, (1993); 
Peltzer, Gilles, Evidence of nonlinear elasticity of the crust from the Mw7.6 Manyi (Tibet) earthquake, Science, 286, 5438, pp. 272-276, (1999); 
Acta Seismologica Sinica, (1998); 
Shan, Xianjian, Co-seismic ground deformation and source parameters of Mani M7.9 earthquake inferred from spaceborne D-InSAR observation data, Science in China, Series D: Earth Sciences, 47, 6, pp. 481-488, (2004); 
Acta Geological Sinica, (2007); 
Chinese Science Bulletin, (2000); 
Lu, Zhong, Aseismic inflation of Westdahl volcano, Alaska, revealed by satellite radar interferometry, Geophysical Research Letters, 27, 11, pp. 1567-1570, (2000); 
Monitoring Ground Deformation from Space, (2010); 
Wicks, Charles W., Migration of fluids beneath yellowstone caldera inferred from satellite radar interferometry, Science, 282, 5388, pp. 458-462, (1998)
SPONSORS: The Institute of Electrical and Electronics Engineers, Geoscience and Remote Sensing Society
CONFERENCE NAME: 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CONFERENCE DATE: 2009-07-12 through 2009-07-17
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ma, W.-T., Li, H.-O., Xiwei, X., Yang, Q.-Y., Chen, X.-C., Xu, C.-P., Yu, G.-H., Zhang, L.-F.
AUTHOR FULL NAMES: Ma, Wentao (26032205500); Li, Haiou (26027965600); Xiwei, Xu (8246843900); Yang, Qingyuan (56309611700); Chen, Xiancheng (55739047400); Xu, Changpeng (26031147000); Yu, Guihua (7403528699); Zhang, Lanfeng (8558415600)
26032205500; 26027965600; 8246843900; 56309611700; 55739047400; 26031147000; 7403528699; 8558415600
Using reservoir induced earthquake database to quickly provide information to government departments for disaster response of Ms8.0 Wenchuan earthquake
(2009) Dizhen Dizhi, 31 (4), pp. 792 - 798, Cited 0 times.
DOI: 10.3969/j.issn.0253-4967.2009.04.023
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77949696772&doi=10.3969%2Fj.issn.0253-4967.2009.04.023&partnerID=40&md5=67363f8e7b4e17d4bccc93d78f36f3f0

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: In the paper, according to the related factors and characteristics of identified reservoir induced earthquakes, the parameters of reservoir induced earthquake database and library structure have been determined. Based on the database functions of ARCGIG geographic information system software,the reservoir induced earthquake database contains 131 reservoir induced earthquake cases in the would, 110 Class-I large reservoirs (larger than one thousand million cubic meters),200 Class II large reservoirs (larger than one hundred million cubic meters and less than one thousand million cubic meters) and 70 reservoirs with dams higher than 100 meters in China. It has the functions of quick query,statistics and icons. After the Wenchuan earthquake, aftershocks endangered many reservoir's dams and people who were taking part in earthquake rescue and relief operations. Two days after the M<inf>s</inf>8. 0 Wenchuan earthquake, the distribution and basic information of large reservoirs in Sichuan Province and nearby regions was submitted. The government made timely earthquake emergency response decisions to ensure a safe relief. The reservoir induced earthquake database is not only a method provided to the government for quick decision-making, but also can be used nation-wide.
AUTHOR KEYWORDS: Database; Reservoir; Seismic hazard; Wenchuan Ms 8.0 earthquake
INDEX KEYWORDS: aftershock; data management; database; disaster management; GIS; reservoir-induced seismicity; seismic hazard; Sichuan earthquake 2008; software; China; Sichuan
REFERENCES: Design of Hydroelectric Power Station, (2001); 
Water Resources Hydropower of Northeast China, (2005); 
Earthquake Research in Sichuan, (2007); 
Seismology and Geology, (1979); 
Sichuan Water Conservancy, (1994); 
Hu, Yuliang, Induced seismicity at Wujiangdu Reservoir, China: A case induced in the karst area, Pure and Applied Geophysics, 147, 2, pp. X15-418, (1996)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Su, F., Cui, P.
AUTHOR FULL NAMES: Su, Fenghuan (14033176000); Cui, Peng (56706923500)
14033176000; 56706923500
GIS-based susceptibility mapping and zonation of debris flows caused by Wenchuan earthquake
(2009), art. no. 5364077, Cited 1 times.
DOI: 10.1109/ICIECS.2009.5364077
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77949677128&doi=10.1109%2FICIECS.2009.5364077&partnerID=40&md5=2ef707c9d4b490fd97bfadba9c65ef24

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Debris flow susceptibility zonation (DBSZ) is necessary for disaster management and planning development activities in mountainous regions. This paper presents the results of a pilot study for assessing debris-flow hazards using geographic information system (GIS) techniques. The debris flow caused by earthquake in Wenchuan County was identified on the basis of remote sensing images interpretation and field investigation. In this paper, the debris flow nominal susceptibility factor method has been applied for DBSZ mapping in Wenchuan county. Relevant thematic maps representing various factors (e.g., lithology, fracture belts, earthquake magnitude, slope, aspect, relative relief, form factor, drainage areas) that are related to debris flow activity, have been generated using remote sensing and GIS techniques. The debris-flow susceptibility index of these factors above is calculated. The overall debris-flow hazard at a particular watershed may be assessed according to all DH indexes. They are classified as the very high, high, moderate and low hazard zones. ©2009 IEEE.
AUTHOR KEYWORDS: Debris flow; GIS; Remote sensing; Suscepbility zonation
INDEX KEYWORDS: Debris flow; Debris flows; Development activity; Disaster management; Drainage area; Earthquake magnitudes; Field investigation; Form factors; Hazard zones; Mountainous regions; Pilot studies; Remote sensing and GIS; Remote sensing images; Susceptibility mapping; Thematic maps; Wenchuan Earthquake; Approximation theory; Computer science; Disaster prevention; Earthquakes; Geographic information systems; Image reconstruction; Lithology; Maps; Planning; Remote sensing; Debris
REFERENCES: Bulletin of Chinese Academy of Sciences, (2008); 
Geomorphology, (2007); 
Davis, John C., Two models for evaluating landslide hazards, Computers and Geosciences, 32, 8, pp. 1120-1127, (2006); 
Guzzetti, Fausto, Estimating the quality of landslide susceptibility models, Geomorphology, 81, 1-2, pp. 166-184, (2006); 
Wei, Fangqiang, Method and its application of the momentum model for debris flow risk zoning, Chinese Science Bulletin, 48, 6, pp. 594-598, (2003); 
Journal of Catastrophology, (2005); 
Gupta, Ravi Prakash, Landslide hazard zoning using the GIS approach-A case study from the Ramganga catchment, Himalayas, Engineering Geology, 28, 1-2, pp. 119-131, (1990); 
Saha, Ashis Kumar, An approach for GIS-based statistical landslide susceptibility zonation-with a case study in the Himalayas, Landslides, 2, 1, pp. 61-69, (2005); 
Lu, Phillip Feng, A metric for spatial data layers in favorability mapping for geological events, IEEE Transactions on Geoscience and Remote Sensing, 37, 3 I, pp. 1194-1198, (1999)
SPONSORS: Wuhan University, Huazhong Normal University, Wuhan University of Technology, National Technology University of Ukraine, Columbia University
CONFERENCE NAME: 2009 International Conference on Information Engineering and Computer Science, ICIECS 2009
CONFERENCE DATE: 2009-12-19 through 2009-12-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liu, X., Hu, X., Li, Y., Gao, W., Guo, J., Xiao, L.
AUTHOR FULL NAMES: Liu, Xiuguo (15060266300); Hu, Xie (55496257500); Li, Yongsheng (55719229000); Gao, Wei (57211839067); Guo, Jiyuan (56161189500); Xiao, Lin (57199923765)
15060266300; 55496257500; 55719229000; 57211839067; 56161189500; 57199923765
Application of two-pass D-InSAR in Chengdu Region's deformation measurement in Wenchuan earthquake
(2009), art. no. 5362821, Cited 1 times.
DOI: 10.1109/ICIECS.2009.5362821
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77949638021&doi=10.1109%2FICIECS.2009.5362821&partnerID=40&md5=415d401b0f0c1fa82dcab666debcfe2f

AFFILIATIONS: Faculty of Information Engineering, China University of Geosciences, Wuhan, Hubei, China
ABSTRACT: On the 12th May 2008, an earthquake with 8.0Ms shook a large area of the Sichuan Province in China. The epicenter of the devastating earthquake was located in Wenchuan, 80 kilometers west-northwest of Chengdu, the capital of Sichuan Province. A lot of scholars have used various remote sensing images and other techniques to detect the disaster. Differential synthetic aperture radar interferometry (D-InSAR) is an advanced technique for monitoring large-scale terrain deformation with mm accuracy. This paper described the application of two-pass D-InSAR in mapping the co-seismic surface deformation caused by the Wenchuan earthquake including the interferometric data processing workflow and results. Chengdu region's deformation measures at roughly 140mm in our study, which is relative rather than absolute. D-InSAR applied to a terrain deformation measurement has been proven as an effective tool to detect displacements. ©2009 IEEE.
AUTHOR KEYWORDS: Cosmo-SkyMed; D-InSAR; Deformation measurement; Wenchuan earthquake
INDEX KEYWORDS: Chengdu; D-inSAR; Deformation measurements; Deformation measures; Differential synthetic aperture radar interferometries; Effective tool; Interferometric data; Large-scale terrain; Remote sensing images; Sichuan province; Surface deformation; Terrain deformation; Wenchuan Earthquake; Computer science; Data processing; Earthquakes; Geodetic satellites; Image reconstruction; Imaging systems; Interferometry; Landforms; Motion compensation; Remote sensing; Synthetic aperture radar; Deformation
REFERENCES: Massonnet, Didier, The displacement field of the Landers earthquake mapped by radar interferometry, Nature, 364, 6433, pp. 138-142, (1993); 
Ge, Linlin, Preliminary results of satellite radar differential interferometry for the co-seismic deformation of the 12 may 2008 ms8.0 wenchuan earthquake, Geographic Information Sciences, 14, 1, pp. 12-19, (2008); 
Sun, Jianbao, InSAR deformation observation and preliminary analysis of the MS8 Wenchuan earthquake, Dizhen Dizhi, 30, 3, pp. 789-795, (2008); 
undefined, (2010); 
undefined, (2010); 
Bamler, Richard, Synthetic aperture radar interferometry, Inverse Problems, 14, 4, pp. r1-r54, (1998); 
Journal of Southwest Jiaotong University, (2004); 
Beijing Sinomaps, (2003); 
Xia, Ye, Bam earthquake: Surface deformation measurement using radar interferometry, Acta Seismologica Sinica English Edition, 18, 4, pp. 451-459, (2005); 
Products Cosmo Skymed SAR Satellite, (2009)
SPONSORS: Wuhan University, Huazhong Normal University, Wuhan University of Technology, National Technology University of Ukraine, Columbia University
CONFERENCE NAME: 2009 International Conference on Information Engineering and Computer Science, ICIECS 2009
CONFERENCE DATE: 2009-12-19 through 2009-12-20
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tang, X., Cheng, L., Xu, S.
AUTHOR FULL NAMES: Tang, Xiaoyong (56327171800); Cheng, Lin (55309148300); Xu, Shang (35306104100)
56327171800; 55309148300; 35306104100
Identification of critical links under earthquake hazards for highway networks
(2009) Journal of Southeast University (English Edition), 25 (4), pp. 531 - 535, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77949349443&partnerID=40&md5=aabda827a17a49a16c8946e08f59d0cd

AFFILIATIONS: School of Transportation, Southeast University, Nanjing, Jiangsu, China
ABSTRACT: Critical links are defined as easily damaged links with massive transport in highway networks, which also need intensive improvement. The total travel time increment caused by a link's failure reflects its importance and is taken as the measure of importance. Links are subdivided into segments according to their structure features and environments. Each segment's unreliability is the probability of its function failure that cannot be recovered within an expected time. The measure of criticality is defined as the expected total travel time increment and can be obtained from the product of importance and reliability. It reflects a links' importance and ability to provide continuous service for evacuation and rescues under earthquake situation. Critical links can then be identified from the sequence of their criticality. These measures are calculated in the highway network of earthquake-hit areas in Wenchuan. Results collected in geographic information system (GIS) visualization are consistent with the situation revealed in this earthquake, which indicates that the presented method can be used to identify critical links in advance and give guidance regarding refugee evacuation and facility protection from earthquakes. Copyright.
AUTHOR KEYWORDS: Criticality; Highway network; Importance; Reliability; Wenchuan earthquake
INDEX KEYWORDS: Continuous services; Critical links; Criticality; Earthquake hazard; Expected time; Highway networks; Structure features; Travel time; Wenchuan Earthquake; Criticality (nuclear fission); Geographic information systems; Motor transportation; Reliability; Earthquakes
REFERENCES: Nicholson, Alan J., Degradable transportation systems: An integrated equilibrium model, Transportation Research Part B: Methodological, 31, 3 PART B, pp. 209-223, (1997); 
Proceedings of the Fifth Wctr, (1989); 
Proceedings of the 19th Ptrc Summer Annual Meeting, (1991); 
Chen, Anthony, A capacity related reliability for transportation networks, Journal of Advanced Transportation, 33, 2, pp. 183-200, (1999); 
Chen, Anthony, Capacity reliability of a road network: An assessment methodology and numerical results, Transportation Research Part B: Methodological, 36, 3, pp. 225-252, (2002); 
Berdica, Katja, An introduction to road vulnerability: What has been done, is done and should be done, Transport Policy, 9, 2, pp. 117-127, (2002); 
Jenelius, Erik, Importance and exposure in road network vulnerability analysis, Transportation Research Part A: Policy and Practice, 40, 7, pp. 537-560, (2006); 
Stevenson, P. C., An empirical method for the evaluation of relative landslip risk, Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur, 16, 1, pp. 69-72, (1977); 
Adachi, Takao, Serviceability of earthquake-damaged water systems: Effects of electrical power availability and power backup systems on system vulnerability, Reliability Engineering and System Safety, 93, 1, pp. 78-88, (2008); 
Galli, Mirco, Landslide vulnerability criteria: A case study from Umbria, central Italy, Environmental Management, 40, 4, pp. 649-664, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Z., Chen, P.
AUTHOR FULL NAMES: Zhang, Yu (59003173200); Chen, Pengxiao (35363463900)
59003173200; 35363463900
Impact analysis and appraisal of Tangjiashan Barrier Lake by spatial information technology
(2009), art. no. 5293508, Cited 1 times.
DOI: 10.1109/GEOINFORMATICS.2009.5293508
https://www.scopus.com/inward/record.uri?eid=2-s2.0-74349099587&doi=10.1109%2FGEOINFORMATICS.2009.5293508&partnerID=40&md5=c9cabe352a64bc4b6a972bec43dcd5da

AFFILIATIONS: Yangtze River Scientific Research, Wuhan, China
ABSTRACT: Tangjiashan Barrier Lake is one of the most dangerous induced disasters in the great Wenchuan Earthquake. In this paper, spatial information such as synthetic aperture radar, Multi-spectrum remote sensing imagery and DEM is utilized to fast acquire characteristic parameters of Barrier Lake, such as storage capacity in different water level, the retain ability and the flood area, etc. The impact analysis and appraisal of Tangjiashan Barrier Lake are available by overlay between spatial information and calculation of the hydrodynamics model. Several hydrodynamics model computations are worked out according to different scheme and different assumed water level. The spatial information overlaid by calculational results demonstrates disaster's space-time distribution of Tangjiashan Barrier Lake's break. The result shows that the spatial information processing method will provide information in a fast and accurate manner for the Barrier Lake monitoring. It will provide an early warning to the goverment and provides a valuable reference for decision-maker as well.
AUTHOR KEYWORDS: Hydrodynamics model; Impact analysis; Remote sensing; Spatial information; Tangjiashan Barrier Lake
INDEX KEYWORDS: Characteristic parameter; Decision makers; Early warning; Goverment; Impact analysis; Model computation; Multi-spectrum; Remote sensing imagery; Space time distribution; Spatial information processing; Spatial informations; Storage capacity; Tangjiashan Barrier Lake; Wenchuan Earthquake; Data processing; Fluid dynamics; Hydrodynamics; Imaging systems; Remote sensing; Space optics; Synthetic aperture radar; Synthetic apertures; Water analysis; Water levels; Lakes
REFERENCES: Yangtze River, (2008); 
Digital Image Processing, (1996); 
Yangtze River, (2008)
SPONSORS: IEEE GRSS, NASA, NOAA, OGC
CONFERENCE NAME: 2009 17th International Conference on Geoinformatics, Geoinformatics 2009
CONFERENCE DATE: 2009-08-12 through 2009-08-14
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Wang, F.-X., Zhou, W.-C.
AUTHOR FULL NAMES: Wang, Fengxia (55740530300); Zhou, Wancun (12040479700)
55740530300; 12040479700
The study on land use changes of Wenchuan disaster area based on RS and GIS
(2009), art. no. 5302260, Cited 4 times.
DOI: 10.1109/CISP.2009.5302260
https://www.scopus.com/inward/record.uri?eid=2-s2.0-73849111950&doi=10.1109%2FCISP.2009.5302260&partnerID=40&md5=257523a46b70ffa5e37d03dfb861f3bf

AFFILIATIONS: Tourism College, Hainan University, Haikou, Hainan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: It has been one year since the Wenchuan earthquake took place. The changes and the law of changes of land use are the reason of the paper. Firstly, the land use classification system had to be built, for the classification system is the foundation of the study. Secondly, the task was the collection and preprocessing of the high resolution RS images before and after the earthquake. Thirdly, the interpretation standard was established for the difference of spectrum feature of the different land use types in RS images. Fourthly, the interpretation and analysis of RS images before and after earthquake were made respectively, and then the land use data of the same region in different times were extracted. At last the change law of different land use types was analyzed. Remote Sensing (RS) and Geographic Information System (GIS) were used adequately during the whole process. For the Remote Sensing methods can provide abundant and real-time information, and Geographic Information System has powerful functions in data processing and spatial analysis, the combination of RS and GIS has inestimable advantages compared with the traditional methods, and is highly effective in analyzing the land use/land cover changes in Wenchuan earthquake area. ©2009 IEEE.
AUTHOR KEYWORDS: Earthquake; Geographic information system (GIS); Land use changes; Remote sensing (RS); Wenchuan
INDEX KEYWORDS: Before and after; Classification system; Different land use types; Disaster areas; High-resolution RS images; Land use changes; Land use/land cover change; Land-use change; Landuse classifications; Powerful functions; Real-time information; RS and GIS; RS image; Spatial analysis; Spectrum features; Wenchuan Earthquake; Whole process; Data processing; Earthquakes; Geographic information systems; Image processing; Information systems; Rapid solidification; Remote sensing; Signal processing; Land use
REFERENCES: Remote Sensing for Land Resources, (2008); 
Journal of Mountain Science, (2008); 
Walter, Volker, Object-based classification of remote sensing data for change detection, ISPRS Journal of Photogrammetry and Remote Sensing, 58, 3-4, pp. 225-238, (2004); 
Silva, P. G., Change Vector Analysis technique to monitor selective logging activities in Amazon, International Geoscience and Remote Sensing Symposium (IGARSS), 4, pp. 2580-2582, (2003); 
Myneni, Ranga B., Global products of vegetation leaf area and fraction absorbed PAR from year one of MODIS data, Remote Sensing of Environment, 83, 1-2, pp. 214-231, (2002); 
undefined, (2010); 
Rural Eco Environment, (2001); 
Resources and Environment in the Yangtze Basin, (2005); 
undefined, (2010); 
Remote Sensing Technology and Application, (2006)
SPONSORS: Tianjin University of Technology
CONFERENCE NAME: 2009 2nd International Congress on Image and Signal Processing, CISP'09
CONFERENCE DATE: 2009-10-17 through 2009-10-19
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Li, S., Hua, H.
AUTHOR FULL NAMES: Li, Song (55741079100); Hua, Houqianga (35199877100)
55741079100; 35199877100
Automatic recognition of landslides based on change detection
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7384, art. no. 73842E, Cited 6 times.
DOI: 10.1117/12.836109
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449866867&doi=10.1117%2F12.836109&partnerID=40&md5=2a7e6008b6cdfce91326e5dc6f85a577

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, China; Demonstration Center for Spaceborne Remote Sensing, National Space Administration, Beijing, China
ABSTRACT: After Wenchuan earthquake disaster, landslide disaster becomes a common concern, and remote sensing becomes more and more important in the application of landslide monitoring. Now, the method of interpretation and recognition for landslides using remote sensing is visual interpretation mostly. Automatic recognition of landslide is a new and difficult but significative job. For the purpose of seeking a more effective method to recognize landslide automatically, this project analyzes the current methods for the recognition of landslide disasters, and their applicability to the practice of landslide monitoring. Landslide is a phenomenon and disaster triggered by natural and artificial reasons that a part of slope comprised of rock, soil and other fragmental materials slide alone a certain weak structural surface under the gravitation. Consequently, according to the geo-science principle of landslide, there is an obvious change in the sliding region between the pre-landslide and post-landslide, and it can be described in remote sensing imagery, so we develop the new approach to identify landslides, which uses change detection based on texture analysis in multi-temporal imageries. Preprocessing the remote sensing data including the following aspects of image enhancement and filtering, smoothing and cutting, image mosaics, registration and merge, geometric correction and radiation calibration, this paper does change detection base on texture characteristics in multi-temporal images to recognize landslide automatically. After change detection of multi-temporal remote sensing images based on texture analysis, if there is no change in remote sensing image, the image detected is relatively homogeneous, the image detected shows some clustering characteristics; if there is part change in image, the image detected will show two or more clustering centers; if there is complete change in remote sensing image, the image detected will show disorderly and unsystematic. At last, this paper takes some landslides at the Parry Lake as a case to implement the effectiveness of the new method in the application of landslide identification, which takes SPOT-5(Oct 10, 2003) and ALOS-AVNIR2(Sep 19, 2007) as the respective data sources of pre-landslide and post-landslide. The result shows that the method based on change detection is available of landslide information in arid area and other area where there is not obvious spectral difference between landslide mass and the background. Certainly, it will be more available of such area where there is obvious spectrum difference between landslide region and the background. © 2009 SPIE.
AUTHOR KEYWORDS: Automatic recognition; Change detection; Landslide; Multi-temporal; Remotely-sensed imagery
INDEX KEYWORDS: Arid area; Automatic recognition; AVNIR-2; Change detection; Clustering centers; Data source; Geometric correction; Image mosaic; Landslide identification; Landslide mass; Landslide monitoring; Multi-temporal; Multi-temporal image; Multi-temporal remote sensing; New approaches; Radiation calibration; Remote sensing data; Remote sensing imagery; Remote sensing images; Spectral differences; Structural surfaces; Texture analysis; Texture characteristics; Visual interpretation; Wenchuan Earthquake; Arid regions; Cluster analysis; Detectors; Image enhancement; Image reconstruction; Remote sensing; Signal detection; Textures; Landslides
REFERENCES: Acta Geodaetica Et Cartographica Sinica, (2007); 
Research of Soil and Water Conservation, (2006); 
Chinese J Eng Geophysics, (2007); 
Lin, Wentzu, Vegetation recovery monitoring and assessment at landslides caused by earthquake in Central Taiwan, Forest Ecology and Management, 210, 1-3, pp. 55-66, (2005); 
Hervás, Javier, Monitoring landslides from optical remotely sensed imagery: The case history of Tessina landslide, Italy, Geomorphology, 54, 1-2, pp. 63-75, (2003); 
A Dictionary of Modern Geography, (1990); 
Landslidologies, (2000); 
Chinese Journal of Geological Hazard and Control, (2004); 
Singh, Ashbindu, Review Articlel: Digital change detection techniques using remotely-sensed data, International Journal of Remote Sensing, 10, 6, pp. 989-1003, (1989); 
Lu, Dengsheng, Change detection techniques, International Journal of Remote Sensing, 25, 12, pp. 2365-2401, (2004)
SPONSORS: Photoelectric Technology Professional Committee, Chinese Society of Astronautics
CONFERENCE NAME: International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications
CONFERENCE DATE: 2009-06-17 through 2009-06-19
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Second International Conference on Earth Observation for Global Changes
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449627762&partnerID=40&md5=93148b97919cac4ff18d056549d0d07e

ABSTRACT: The proceedings contain 80 papers. The topics discussed include: land cover classification with MODIS data in China; analysis of urban thermal characteristics and associated land cover with Landsat TM/ETM+ data in Shenyang, China; applying SLEUTH for simulating urban expansion of Hangzhou; use of remote sensing and GIS to assess the effects of agricultural land quality on spatial extension of construction land in Chengdu; new site selection for the immigrant transit of the post-disaster reconstruction of Wenchuan earthquake region; use of remote sensing in the second national land investigation in China; dynamic monitoring of mineral resources region: a case study of Huludao, China; monitoring urbanization and land cover change in the Yangtze river delta: a case study of Pudong New Area, Shanghai; and monitoring dynamic changes of cropland in Minqin from 1989 to 2008.
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference review
PUBLICATION STAGE: Final

Liu, X., Li, Q., Fang, J., Tong, Q., Zheng, L.
AUTHOR FULL NAMES: Liu, Xue (36844130600); Li, Qingting (15846432500); Fang, Junyong (7402966108); Tong, Qingxi (7102360135); Zheng, Lanfen (35424931800)
36844130600; 15846432500; 7402966108; 7102360135; 35424931800
Application of multi-mode airborne digital camera system in wenchuan earthquake disaster monitoring
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 74711F, Cited 0 times.
DOI: 10.1117/12.836317
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449597431&doi=10.1117%2F12.836317&partnerID=40&md5=b63300d3e725424fd58b04dae40ed371

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Remote sensing, especially airborne remote sensing, can be an invaluable technique for quick response to natural disasters. Timely acquired images by airborne remote sensing can provide very important information for the headquarters and decision makers to be aware of the disaster situation, and make effective relief arrangements. The image acquisition and processing of Multi-mode Airborne Digital Camera System (MADC) and its application in Wenchuan earthquake disaster monitoring are presented in this paper. MADC system is a novel airborne digital camera developed by Institute of Remote Sensing Applications, Chinese Academy of Sciences. This camera system can acquire high quality images in three modes, namely wide field, multi-spectral (hyper-spectral) and stereo conformation. The basic components and technical parameters of MADC are also presented in this paper. MADC system played a very important role in the disaster monitoring of Wenchuan earthquake. In particular, the map of dammed lakes in Jianjiang river area was produced and provided to the front line headquarters. Analytical methods and information extraction techniques of MADC are introduced. Some typical analytical and imaging results are given too. Suggestions for the design and configuration of the airborne sensors are discussed at the end of this paper. © 2009 SPIE.
AUTHOR KEYWORDS: Airborne remote sensing; Disaster monitoring; MADC; Wenchuan earthquake
INDEX KEYWORDS: Air-borne sensors; Airborne remote sensing; Analytical method; Camera systems; Chinese Academy of Sciences; Decision makers; Digital camera system; Disaster monitoring; High quality images; HyperSpectral; Information extraction techniques; MADC; Multi-spectral; Multimodes; Natural disasters; Quick response; Remote sensing applications; Wenchuan earthquake; Wide field; Digital cameras; Disasters; Earthquakes; Image acquisition; Observatories; Remote sensing; Video cameras; Cameras
REFERENCES: Liu, Xue, Study on multispectral mode of multi-mode airborne digital camera system, Proceedings of SPIE - The International Society for Optical Engineering, 6830, (2007); 
Remote Sensing of the Environment 15th National Symposium on Remote Sensing of China Proceedings of SPIE, (2005); 
Journal of Remote Sensing, (2003); 
undefined, (2009); 
King, Douglas J., Airborne multispectral digital camera and video sensors: A critical review of system designs and applications, Canadian Journal of Remote Sensing, 21, 3, pp. 245-273, (1995); 
Remote Sensing of the Environment 15th National Symposium on Remote Sensing of China Proceedings of SPIE, (2005)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Yang, W.-N., Hu, G., Liu, H.-H., Peng, L.
AUTHOR FULL NAMES: Yang, Wunian (7407756597); Hu, Guochao (35191894600); Liu, Hanhu (9240308700); Peng, Li (59820663600)
7407756597; 35191894600; 9240308700; 59820663600
New site selection for the immigrant transit of the post- disasterreconstruction of wenchuan earthquake region
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 747107, Cited 3 times.
DOI: 10.1117/12.836342
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449578421&doi=10.1117%2F12.836342&partnerID=40&md5=a39df9de6da8ebcea06eadfc70b8bc42

AFFILIATIONS: State key Laboratory, State Key Laboratory of Geo-Hazard Prevention and Earth Environment Protection, Chengdu, Sichuan, China
ABSTRACT: The strong earthquake struck on 12 May 2008 destroyed numerous houses in Wenchuan, Sichuan, China. This earthquake escalated the scale of existing geological disasters, undermined the stability of earthquake-prone zones, and triggered landslides and many other hidden disasters. In addition, many aftershocks and heavy rainfalls have prompted secondary disasters and consequently, the actual damages have been doubled in terms of scale and magnitude. Since some regions there are no longer appropriate for people to live, temporary housing and post-disaster reconstruction are badly needed. Recent advances in remote sensing and geospatial technologies have promoted their successful applications in siting engineering. Because of different research backgrounds, geological disasters and vegetation density were rarely incorporated as primary parameters for siting assessment. Based on the principles of avoiding active faults and encouraging synthetic prevention of geological disasters, we performed a locating analysis using part of the Wenchuan County as a case. Six major parameters were used to build a siting model, including geological disasters, vegetation index, stream systems, faults, terrain slope, and elevation. The results show that the proposed method can provide useful information for decision-making in the selection of temporary housing and post-disaster reconstruction. © 2009 SPIE.
AUTHOR KEYWORDS: Earthquake; Geological disasters; Remote sensing; Spatial analysis
INDEX KEYWORDS: Active fault; Geological disaster; Geological disasters; Geospatial technology; Heavy rainfall; Primary parameters; Sichuan , China; Siting models; Spatial analysis; Terrain slope; Vegetation density; Vegetation index; Wenchuan Earthquake; Disasters; Earthquakes; Housing; Observatories; Remote sensing; Site selection; Vegetation; Disaster prevention
REFERENCES: Research of the Method of Immigration Location in Xinping County, (2007); 
Gao, Jinsong, Implementation of site locating strategies based on RS and GIS, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 30, 9, pp. 778-781, (2005); 
Earth Science Progress, (2008); 
Journal of Northwestern Polytechnical University, (2001); 
Yang, Wunian, Digital processing and information extraction of the SPOT, ERS-SAR, Radarsat and Landsat TM images for geological hazard in the Yangtze Three Gorges Project Region, China, Acta Geologica Sinica (English Edition), 79, 3, pp. 423-430, (2005); 
Research and Detect on Geological Disasters to the Upriver of Jin Sha Jiang by Remote Sensing and GIS, (2007); 
Estimation of Landslide Hazard Based on Rs and GIS Technology, (2006); 
Advances in Remote Sensing Science, (2007); 
Yang, Wunian, Digital processing and information extraction of multi-type and multi-temporal remote sensing images for geological hazard in the Yangtze Three Gorges Project Region, China, Journal of the Chengdu Institute of Technology, 30, 4, pp. 378-385, (2003)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, J., Miao, F., Wang, W., Wang, H.
AUTHOR FULL NAMES: Chen, Jianhua (8893253500); Miao, Fang (35768354700); Wang, Weihong (57201692566); Wang, Hua Jun (55689029400)
8893253500; 35768354700; 57201692566; 55689029400
Design and implementation of ggearth spatial data service application system
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 74711V, Cited 3 times.
DOI: 10.1117/12.836772
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449572092&doi=10.1117%2F12.836772&partnerID=40&md5=ac63a3f627bd804880ca92b103c02e4f

AFFILIATIONS: Key Laboratory of Earth Exploration and Information Technology, Chengdu University of Technology, Chengdu, China; College of Information Engineering, Chengdu University of Technology, Chengdu, China; College of Geology Science, Chengdu University of Technology, Chengdu, China
ABSTRACT: The digital earth concept has aroused strong repercussions and been arousing researches boom both at home and abroad once it is proposed. Many digital earth prototype systems have been researched and distributed in worldwide, and the Google Earth is more typical. The booming development of digital earth's research and its prototype's development bring about G/S mode timely, a novel spatial information distributing access, and organization software architecture mode. Based on native GML spatial database system and Google Earth, with G/S mode as its architecture, and combination with GML/KML compressive transport and transformation, this paper proposed and designed the software architecture of GGEarth spatial data service application system, the research content and key implementation technologies were given. This system provides functions of data presentation, query, update and spatial analysis, which uses native GML spatial database (and GML, KML documents) as the standard data center, and the client based on Google Earth COM API as the front-end. This system can be applied in fields of digital city, digital tourism and traditional Web GIS. The authors developed the GGEarth experimental system and ran it with the data of '5·12' Wenchuan earthquake timing and the model data of digital Jiuzhaigou virtual tourism. Some running screenshots are also given. © 2009 SPIE.
AUTHOR KEYWORDS: Application integration; Digital earth; G/S mode; Google earth; Keyhole markup language
INDEX KEYWORDS: Application integration; Digital earth; G/S mode; Google earth; Keyhole markup language; Architecture; Computer software; Internet; Linguistics; Markup languages; Observatories; Query languages; Software architecture; Research
REFERENCES: Digital Earth Understanding Our Planet in the 21st Century, (1998); 
Reddy, Martin, Modeling the digital earth in VRML, Proceedings of SPIE - The International Society for Optical Engineering, 3905, pp. 113-121, (2000); 
Smith, Terence R., The Alexandria digital earth prototype system, pp. 118-119, (2001); 
Ikoma, Eiji, Development of an earth environmental digital library system for soil and land-atmospheric data, (2001); 
Chen, Aijun, Geospatial information layer sharing model for digital earth, Ruan Jian Xue Bao/Journal of Software, 13, 8, pp. 1436-1440, (2002); 
Devaul, Holly, The digital library for earth system education (DLESE): Designing for K-12 educators, Bulletin of the American Meteorological Society, pp. 5601-5602, (2004); 
Dong, Shaochun, Earth Science Digital Museum (ESDM): Toward a new paradigm for museums, Computers and Geosciences, 32, 6, pp. 793-802, (2006); 
Lei, Cai, Efficient global data model for the digital earth, Proceedings of SPIE - The International Society for Optical Engineering, 6790, (2007); 
China Surveying and Mapping, (2003); 
Journal of System Simulation, (2006)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Jiao, Q., Wu, Y., Liu, L., Chen, Z., Zhang, B.
AUTHOR FULL NAMES: Jiao, Quanjun (23492392400); Wu, Yanhong (57221579071); Liu, Liangyun (8600097300); Chen, Zhengchao (7409481437); Zhang, Bing (8835983800)
23492392400; 57221579071; 8600097300; 7409481437; 8835983800
HJ-1 CCD image in detecting landscape change in earthquake areas
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 74711H, Cited 1 times.
DOI: 10.1117/12.836319
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449566981&doi=10.1117%2F12.836319&partnerID=40&md5=90dff0410c297cba7fa789df0f465a1d

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: In this paper a new remote sensor on board HJ-1 satellite was used to extract information on landscape destruction. Based on post-earthquake HJ-1 CCD image, landscape change in the Wenchuan earthquake stricken area were recorded. It showed evidence that the spatial distribution of landscape destruction intensified significantly in the valleys of the Min River. Airborne remote sensing with its flexibility and high-resolution can achieve highly accurate natural landscape destruction information by means of human-computer interaction. Landscape change map in the earthquake area by airborne image could be utilized as validation data. Landscape change result obtained by HJ-1 CCD sensor has the relative error of about 16.2% less than that by ADS40 airborne images. This paper also discussed the correction method of landscape change detection using HJ-1 CCD image. The conclusion of this study is that HJ-1 CCD sensor has a great potential in monitoring and assessment of natural hazards. © 2009 SPIE.
AUTHOR KEYWORDS: Airborne image; CCD camera; Earthquake; HJ-1; Landscape destruction; Natural hazard monitoring
INDEX KEYWORDS: Airborne image; Airborne images; Airborne remote sensing; CCD images; CCD sensors; Correction method; High resolution; HJ-1; Landscape change detection; Landscape changes; Landscape destruction; Monitoring and assessment; Natural hazard; Natural hazard monitoring; Natural landscapes; Relative errors; Remote sensors; Spatial distribution; Validation data; Wenchuan Earthquake; Cameras; CCD cameras; Earthquakes; Geomorphology; Hazards; Human computer interaction; Knowledge management; Observatories; Remote sensing; Size distribution; Digital cameras
REFERENCES: Dhakal, Amod Sagar, Landslide hazard mapping and its evaluation using GIS: An investigation of sampling schemes for a grid-cell based quantitative method, Photogrammetric Engineering and Remote Sensing, 66, 8, pp. 981-989, (2000); 
Lin, Chao Yuan, Vegetation recovery assessment at the Jou-Jou Mountain landslide area caused by the 921 Earthquake in Central Taiwan, Ecological Modelling, 176, 1-2, pp. 75-81, (2004); 
Liang, Longshin, Monitoring and statistical analysis of lanslides in Taiwan island using multi satellite images and GIS data, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 5331-5334, (2007); 
Jiao, Quanjun, A self-adaptive approach of retrieving leaf area index based on the imaging geometry model of HJ-1A multispectral camera, Proceedings of SPIE - The International Society for Optical Engineering, 7285, (2008); 
McKean, Jim A., Remote sensing and landslide hazard assessment, Photogrammetric Engineering and Remote Sensing, 57, 9, pp. 1185-1193, (1991); 
Whitworth, Malcolm C.Z., Airborne remote sensing for landslide hazard assessment: A case study on the Jurassic escarpment slopes of Worcestershire, UK, Quarterly Journal of Engineering Geology and Hydrogeology, 38, 3, pp. 285-300, (2005); 
Lillesand, Thomas M., Remote sensing and image interpretation., (1979)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Tu, Y., Peng, J., Li, Q., Dong, C., Zhao, H.
AUTHOR FULL NAMES: Tu, Yong (35932939900); Peng, Jie (59606841200); Li, Qi (56226812100); Dong, Cheng (57197015482); Zhao, Hui (59045005100)
35932939900; 59606841200; 56226812100; 57197015482; 59045005100
Remote sensing data sharing platform for emergency management
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 747122, Cited 0 times.
DOI: 10.1117/12.847911
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449562160&doi=10.1117%2F12.847911&partnerID=40&md5=884ae8f214c97afd1f22e379ff475bec

AFFILIATIONS: Peking University, Beijing, China; Institute of Scientific and Technical Information, Beijing, China
ABSTRACT: A national emergency spatial data sharing platform approach is a useful and a practical way to promote the discovering and integration of various data sources from different agencies. In this paper, an emergency spatial data sharing architecture used to facilitate resource discovery in the emergency management is presented. At routine time without disasters, the metadata can be shared between organizations so that the appropriate data to be used can easily be discovered. Also, in the event of emergency, this platform can be used to execute the data production plan scheduled by specialists to collect original data from different agencies according to the government's command, so that data can be distributed to the headquarters. On the basis of the introduction of the remote sensing data application in the earthquake, this paper also addresses the data resources (original remote sensing data, metadata, and data product) in the platform, as well as three core issues, data order management, metadata management and data distribution. © 2009 SPIE.
AUTHOR KEYWORDS: Data sharing; Emergency management; Metadata; Spatial data; Wenchuan earthquake
INDEX KEYWORDS: Data distribution; Data production; Data products; Data resources; Data sharing; Data source; Emergency management; Metadata management; National emergencies; Order management; Remote sensing data; Resource discovery; Spatial data; Wenchuan earthquake; Civil defense; Disasters; Earthquakes; Observatories; Planning; Production control; Remote sensing; Metadata
REFERENCES: Zhuang, Dafang, The unstructured data sharing system for natural resources and environment science data of the Chinese academy of science, Data Science Journal, 6, SUPPL., pp. S770-S778, (2007); 
Li, Qi, A unified metadata information management framework for digital city, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 4422-4424, (2004); 
Space and Major Disasters; 
Chinese Academy of Science
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Lin, N., Yang, W.-N., Wang, B.
AUTHOR FULL NAMES: Lin, Na (57215831990); Yang, Wunian (7407756597); Wang, Bin (59867231400)
57215831990; 7407756597; 59867231400
Improved neural network algorithm for classification of UAV imagery related to wenchuan earthquake
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 74711E, Cited 2 times.
DOI: 10.1117/12.836316
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449555309&doi=10.1117%2F12.836316&partnerID=40&md5=8f7dd107bd651c1cfa2791596e999050

AFFILIATIONS: State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China; Center for Information Management in Development, Chongqing Technology and Business University, Chongqing, China; Chongqing Geomatics Center, Chongqing, China
ABSTRACT: When Wenchuan earthquake struck, the terrain of the region changed violently. Unmanned aerial vehicles (UAV) remote sensing is effective in extracting first hand information. The high resolution images are of great importance in disaster management and relief operations. Back propagation (BP) neural network is an artificial neural network which combines multi-layer feed-forward network and error back-propagation algorithm. It has a strong input-output mapping capability, and does not require the object to be identified obeying certain distribution law. It has strong non-linear features and error-tolerant capabilities. Remotely-sensed image classification can achieve high accuracy and satisfactory error-tolerant capabilities. But it also has drawbacks such as slow convergence speed and can probably be trapped by local minimum points. In order to solve these problems, we have improved this algorithm through setting up self-adaptive training rate and adding momentum factor. UAV high-resolution aerial image in Taoguan District of Wenchuan County is used as data source. First, we preprocess UAV aerial images and rectify geometric distortion in images. Training samples were selected and purified. The image is then classified using the improved BP neural network algorithm. Finally, we compare such classification result with the maximum likelihood classification (MLC) result. Numerical comparison shows that the overall accuracy of maximum likelihood classification is 83.8%, while the improved BP neural network classification is 89.7%. The testing results indicate that the latter is better. © 2009 SPIE.
AUTHOR KEYWORDS: Classification; Improved bp neural network algorithm; UAV imagery; Wenchuan earthquake
INDEX KEYWORDS: Aerial images; Artificial Neural Network; Back propagation neural networks; Classification; Classification results; Convergence speed; Data source; Disaster management; Distribution law; Error back-propagation; Error tolerant; Geometric distortion; High resolution image; High-resolution aerial images; Improved BP neural network; Improved bp neural network algorithm; Input-output mapping; Local minimum point; Maximum likelihood classifications; Momentum factor; Multi-layer feed-forward networks; Neural network algorithm; Nonlinear features; Numerical comparison; Preprocess; Relief operations; Self-adaptive; Sensed image; Testing results; Training sample; UAV imagery; Wenchuan earthquake; Algorithms; Backpropagation; Backpropagation algorithms; Disaster prevention; Earthquakes; Image analysis; Image classification; Image sensors; Maximum likelihood; Neural networks; Observatories; Quadrature phase shift keying; Remote sensing; Remotely operated vehicles; Unmanned aerial vehicles (UAV)
REFERENCES: Journal of Remote Sensing, (2008); 
Journal of Changchun Normal University Natural Science, (2006); 
Southern Land and Resources, (2005); 
Journal of Shaoguan University Natural Science, (2007); 
Computer Engineering and Design, (2007); 
Computer and Communications, (2001); 
A Remote Sensing Study of Land Use Classification Based on Back Propagation Artificial Neural Network, (2008)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhang, B., Lei, L., Zhang, L., Liu, L., Zhu, B.-Q., Zuo, Z.
AUTHOR FULL NAMES: Zhang, Bing (8835983800); Lei, Liping (57203377707); Zhang, Li (58853352100); Liu, Liangyun (8600097300); Zhu, Boqin (59122327600); Zuo, Zhengli (15129287700)
8835983800; 57203377707; 58853352100; 8600097300; 59122327600; 15129287700
Application of optical remote sensing in the wenchuan earthquake assessment
(2009) Proceedings of SPIE - The International Society for Optical Engineering, 7471, art. no. 74711G, Cited 2 times.
DOI: 10.1117/12.836318
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449555307&doi=10.1117%2F12.836318&partnerID=40&md5=4eb6f2d2b5c36aeadcc86df0bd4942cc

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: A mega-earthquake of magnitude 8 of Richter scale occurred in Wenchuan County, Sichuan Province, China on May 12, 2008. The earthquake inflicted heavy loss of human lives and properties. The Wenchuan earthquake induced geological disasters, house collapse, and road blockage. In this paper, we demonstrate an application of optical remote sensing images acquired from airborne and satellite platforms in assessing the earthquake damages. The high-resolution airborne images were acquired by the Chinese Academy of Sciences (CAS). The pre- and post-earthquake satellite images of QuickBird, IKONOS, Landsat TM, ALOS, and SPOT were collected by the Center for Earth Observation and Digital Earth (CEODE), CAS, and some of the satellite data were provided by the United States, Japan, and the European Space Agency. The pre- and post-earthquake remote sensing images integrated with DEM and GIS data were adopted to monitor and analyze various earthquake disasters, such as road blockage, house collapse, landslides, avalanches, rock debris flows, and barrier lakes. The results showed that airborne optical images provide a convenient tool for quick and timely monitoring and assessing of the distribution and dynamic changes of the disasters over the earthquake-struck regions. In addition, our study showed that the optical remote sensing data integrated with GIS data can be used to assess disaster conditions such as damaged farmlands, soil erosion, etc, which in turn provides useful information for the postdisaster reconstruction. © 2009 SPIE.
AUTHOR KEYWORDS: Disaster; Monitoring; Optical remote sensing; Wenchuan earthquake
INDEX KEYWORDS: Airborne images; Chinese Academy of Sciences; Debris flows; Digital Earth; Dynamic changes; Earth observations; Earthquake damages; Earthquake disaster; European Space Agency; Geological disaster; GIS data; High resolution; Human lives; LANDSAT TM; Optical image; Optical remote sensing; Optical remote sensing data; Quickbird; Remote sensing images; Richter scale; Road blockage; Satellite data; Satellite images; Satellite platforms; Sichuan province; Soil erosion; Wenchuan earthquake; Debris; Disasters; Earth (planet); Erosion; Geographic information systems; Geometrical optics; Image reconstruction; Observatories; Remote sensing; Roads and streets; Satellites; Societies and institutions; Space applications; Space optics; Earthquakes
REFERENCES: Bessis, J. L., Three typical examples of activation of the International Charter "space and major disasters, Advances in Space Research, 33, 3, pp. 244-248, (2004); 
22nd Asian Conference on Remote Sensing, (2001); 
Saito, Keiko, Using High-Resolution Satellite Images for Post-Earthquake Building Damage Assessment: A Study Following the 26 January 2001 Gujarat Earthquake, Earthquake Spectra, 20, 1, pp. 145-169, (2004); 
Remote Sensing for Land Resources, (1993); 
Application of Satellite Remote Sensing in Natural Hazard Management the Mount Mangart Landslide Case Study, (2006); 
Proc Japan Society of Civil Engineers 682 I 56, (2001); 
McKillop, Robin J., Statistical, remote sensing-based approach for estimating the probability of catastrophic drainage from moraine-dammed lakes in southwestern British Columbia, Global and Planetary Change, 56, 1-2, pp. 153-171, (2007); 
Agriculture Handbook, (1997); 
Journal of Applied Remote Sensing Accepted, (2009); 
Ermini, Leonardo, Prediction of the behaviour of landslide dams using a geomorphological dimensionless index, Earth Surface Processes and Landforms, 28, 1, pp. 31-47, (2003)
SPONSORS: International Society of Photogrammetry, and Remote Sensing (ISPRS), International Cartographic Association (ICA), International Association of Geodesy (IAG), International Society for Digital Earth (ISDE)
CONFERENCE NAME: 2nd International Conference on Earth Observation for Global Changes
CONFERENCE DATE: 2009-05-25 through 2009-05-29
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Shao, Y., Huaze, G., Shi'ang, W., Zhang, Z., Wei, T.
AUTHOR FULL NAMES: Shao, Yun (7201598892); Huaze, Gong (26641860900); Shi'ang, Wang (35099504700); Zhang, Fengli (7404970636); Wei, Tian (34882353800)
7201598892; 26641860900; 35099504700; 7404970636; 34882353800
Multi-source SAR remote sensing data for emergency monitoring to Wenchuan earthquake damage assessment
(2009), art. no. 5137745, Cited 2 times.
DOI: 10.1109/URS.2009.5137745
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350158814&doi=10.1109%2FURS.2009.5137745&partnerID=40&md5=aa039f37b343b014e7d76d7cee5a420c

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Graduate School of the Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: Synthetic Aperture Radar (SAR) has significant advantages in disaster monitoring that are all weather, independent of illumination imaging capabilities and strong stereoscopic sense. SAR technology played irreplaceable role in rapid response to Wenchuan Earthquake monitoring and damage assessment. With multi-source and multi-temporal high resolution SAR images, we conduct rapid, systematic and seriate observations regarding to town damage and secondary disaster in Wenchuan Earthquake area. And based on special SAR image characteristics of building damage conditions, distributions and scopes of landslides and dammed lakes, we carried out rapid quantitative evaluation and built corresponding interpretation symbols. The detection reports and achievements are presented to related apartments of country and rescue teams, supplying full and accurate scientific basis about emergency service and disaster relief. ©2009 IEEE.
INDEX KEYWORDS: Building damage; Damage assessments; Disaster monitoring; Disaster relief; Emergency monitoring; Emergency service; High-resolution SAR; Imaging capabilities; Multi-temporal; Multisources; Quantitative evaluation; Rapid response; SAR Images; SAR remote sensing; Wenchuan Earthquake; Disaster prevention; Earthquakes; Imaging systems; Radar imaging; Remote sensing; Synthetic aperture radar; Synthetic apertures; Damage detection
REFERENCES: Stone, Richard, Sichuan disaster: Landslides, Flooding Pose Threats As Experts Survey Quake's Impact, Science, 320, 5879, pp. 996-997, (2008); 
Stone, Richard, Wenchuan earthquake: Scientists race against the clock to gauge landslide risk, Science, 320, 5882, (2008); 
Stone, Richard, An unpredictably violent fault, Science, 320, 5883, pp. 1578-1580, (2008); 
Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
undefined, (2009); 
Taylor, (2009)
CONFERENCE NAME: 2009 Joint Urban Remote Sensing Event
CONFERENCE DATE: 2009-05-20 through 2009-05-22
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Liao, M., Zhang, L., Balz, T.
AUTHOR FULL NAMES: Liao, Mingsheng (7202371636); Zhang, Lu (57202469300); Balz, Timo (55886167200)
7202371636; 57202469300; 55886167200
Post-earthquake landslide detection and early detection of landslide prone areas using SAR
(2009), art. no. 5137742, Cited 3 times.
DOI: 10.1109/URS.2009.5137742
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350136914&doi=10.1109%2FURS.2009.5137742&partnerID=40&md5=e8f8881cf01b1d3b6891fde5274f36b5

AFFILIATIONS: Wuhan University, Wuhan, Hubei, China
ABSTRACT: High-resolution synthetic aperture radar (SAR) played an important role in the disaster management efforts after the Wenchuan Earthquake on May 12, 2008. SAR data was used for damage assessment, risk monitoring, and for the continuous monitoring of the so-called quake lakes. Landslides, triggered by the earthquake and the aftershocks, devastated large areas, killing thousands of people. Landslides formed natural dams, blocking rivers and leading to 34 so-called quake lakes, endangering millions of inhabitants and rescue workers downstream. SAR, amongst other sensor systems, was used to detect landslides and monitor those quake lakes. SAR can also assist the risk analysis by early surveying landslide prone areas and supporting the risk management and disaster reduction approaches. ©2009 IEEE.
INDEX KEYWORDS: Continuous monitoring; Damage assessments; Disaster management; Disaster reduction; Early detection; High resolution synthetic aperture radar; Landslide detection; Natural dam; Risk monitoring; SAR data; Sensor systems; Wenchuan Earthquake; Damage detection; Disaster prevention; Earthquakes; Imaging systems; Lakes; Landslides; Remote sensing; Risk analysis; Risk assessment; Risk management; Safety factor; Synthetic aperture radar; Synthetic apertures
REFERENCES: Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Royden, Leigh H., The geological evolution of the Tibetan plateau, Science, 321, 5892, pp. 1054-1058, (2008); 
Stone, Richard, Sichuan disaster: Landslides, Flooding Pose Threats As Experts Survey Quake's Impact, Science, 320, 5879, pp. 996-997, (2008); 
Dynamics of Mountain Geo Systems, (1992); 
Tianchi, Li, LANDSLIDE DAMS IN SOUTH-CENTRAL CHINA., pp. 146-162, (1986); 
Stone, Richard, Wenchuan earthquake: Scientists race against the clock to gauge landslide risk, Science, 320, 5882, (2008); 
Wang, Zifa, A preliminary report on the Great Wenchuan Earthquake, Earthquake Engineering and Engineering Vibration, 7, 2, pp. 225-234, (2008); 
Cyranoski, David, China: Visions of China, Nature, 454, 7203, pp. 384-387, (2008); 
Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, (2007); 
Eineder, Michael, TerraSAR-X SAR products and processing algorithms, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 4870-4873, (2005)
CONFERENCE NAME: 2009 Joint Urban Remote Sensing Event
CONFERENCE DATE: 2009-05-20 through 2009-05-22
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Duan, F., Huili, H., Li, X.-J., Zhao, W.
AUTHOR FULL NAMES: Duan, Fuzhou (14031404800); Huili, Gong (35240287700); Li, Xiaojuan (55718181400); Zhao, Wenji (12787367300)
14031404800; 35240287700; 55718181400; 12787367300
Application of SWDC aerial digital camera to violent earthquak disarsters
(2009) Journal of Natural Disasters, 18 (5), pp. 36 - 40, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-76549108505&partnerID=40&md5=07dacd937d98baa1c10f597ea28164dc

AFFILIATIONS: Capital Normal University, Beijing, Beijing, China; Key Lab. of 3D Information Acquisition and Application, MOE, Beijing, China
ABSTRACT: Natural disasters occur frequently in China, so the mitigation and relief of disaster becomes the position strategy in higher position after the Wenchuan earthquake causing enormous destruction. By domestic SWDC digital aerial camera and other aerial remote sensing platforms the spatial and attribute information is acquired timely, accurately and effectively in the pre-disaster early warning, disaster emergency and post-disaster reconstruction state. It is an important part of disaster mitigation and relief. In this article the technical programme using SWDC in disaster emergency and post-disaster detailed evaluation is described, while the fast data-acquiring capacity and high precise disaster assessment are explained emphatically. At last, the aerial remote sensing data processing status is analyzed and the future development of aerial remote sensing is prospected.
AUTHOR KEYWORDS: Aerial remote sensing; Digital aerial camera; Disaster emergency
INDEX KEYWORDS: aerial photography; disaster management; earthquake event; natural disaster; remote sensing; China
REFERENCES: undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010); 
undefined, (2010)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, C., Dai, F., Yao, X., Chen, J., Tu, X., Sun, Y., Wang, Z.
AUTHOR FULL NAMES: Xu, Chong (35184309900); Dai, Fuchu (7102055666); Yao, Xin (55723721600); Chen, Jian (55717623400); Tu, Xinbin (7102136710); Sun, Yu (59091816500); Wang, Zhiyi (55850336800)
35184309900; 7102055666; 55723721600; 55717623400; 7102136710; 59091816500; 55850336800
GIS-based landslide susceptibility assessment using analytical hierarchy process in wenchuan earthquake region
(2009) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 28 (SUPPL. 2), pp. 3978 - 3985, Cited 93 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-71049186307&partnerID=40&md5=85ec161c25aabe3e6203eb9007b40994

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China; Ministry of Natural Resources of the People's Republic of China, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; China University of Geosciences, Beijing, Beijing, China; China University of Mining & Technology, Beijing, Beijing, China
ABSTRACT: On 12 May 2008, a catastrophic earthquake with surface wave magnitude of 8.0 struck the Sichuan Province of China. Tens of thousand of landslides were triggered by this earthquake over a broad area. 48007 landslides were interpreted from aerial photographs and multi-source remote sensing imageries, verified by field check. A spatial database, including landslides and associated controlling parameters which may have influence on the occurrence of landslides, was developed and analyzed using geographical information system(GIS) technology. The correlations of landslide distribution with controlling parameters, including faults, lithology, elevation, slope angle, slope aspect, drainages and roads are firstly analyzed, and landslide area-ratio was calculated for each group of the above parameters. An analytical hierarchy process(AHP) was then applied to determine the significance of controlling parameters in triggering the landslides. The resulting susceptibility map showed five classes of landslide susceptibility, i.e. extremely high, high, moderate, low, and extremely low. The area with extremely high and high susceptibility accounts for about 8211 km2, 16.9% of the study area. This indicates that the result is reasonable in 60.5% of the landslides occurred in high or extremely high susceptibility region.
AUTHOR KEYWORDS: Analytical hierarchy process(AHP); Geographical information system(GIS); Landslide; Slope engineering; Susceptibility assessment; Wenchuan Earthquake
INDEX KEYWORDS: Analytical hierarchy process; Geographical information system(GIS); Geographical information systems; Slope engineering; Wenchuan Earthquake; Analytic hierarchy process; Aspect ratio; Earthquakes; Fluorine containing polymers; Geographic information systems; Hierarchical systems; Information systems; Landslides; Lithology; Photography; Remote sensing; Surface waves; Slope protection
REFERENCES: Journal of Remote Sensing, (2009); 
Science Technology Review, (2009); 
Journal of Remote Sensing, (2008); 
Journal of Engineering Geology, (2008); 
Journal of Engineering Geology, (2009); 
Journal of Engineering Geology, (2009); 
Journal of Engineering Geology, (2008); 
Journal of Engineering Geology, (2008); 
Journal of Mountain Science, (2025); 
Wu, Shuren, Analysis and evaluation of geohazard intensity of the Wenchuan earthquake, Sichuan, China, Geological Bulletin of China, 27, 11, pp. 1900-1906, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ni, F.-Q., Yang, S.-C., Ye, J., Zhang, Z.-L., Zheng, C.-X.
AUTHOR FULL NAMES: Ni, Fuquan (30067911400); Yang, Shangchuan (35094830000); Ye, Jian (55468384800); Zhang, Zhiliang (56068880700); Zheng, Caixia (35094782000)
30067911400; 35094830000; 55468384800; 56068880700; 35094782000
Risk evaluation and management for the water environment of the Wenchun earthquake-stricken areas in China
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (SUPPL. 2), pp. 336 - 341, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350714560&partnerID=40&md5=5618d5884f370f88fbea91d9153020fb

AFFILIATIONS: College of Information and Engineering, Sichuan Agricultural University, Ya'an, Sichuan, China; College of Water Resources and Hydropower, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: According to the influence of the Wenchuan earthquake on May 12 to the water environment, the authors design the research routes firstly. Then, the main risk sources are discriminated and evaluated. By analyzing two cases, the authors pointed out that the main strategies of the risk management are emergency treatment technologies, long-term monitoring of the water environment and the water source protection respectively. It has positive significance on the treatment and restoration of water environment in the earthquake-stricken areas.
AUTHOR KEYWORDS: Early warning; Risk evaluation; Risk management; Water environment; Wenchuan earthquake
INDEX KEYWORDS: Early warning; Emergency treatment; Long term monitoring; Risk evaluation; Risk sources; Water environment; Water environments; Water source; Wenchuan earthquake; Earthquakes; Risk analysis; Risk management; Water recycling; Water treatment; Decision making
REFERENCES: Agro Environment and Development, (2008); 
Water Wastewater Engineering, (2008); 
Bulletin of the Academy of Military Medical Sciences, (2008); 
Ruan, Fangming, Investigation on organism pollution of various water resources after devastating earthquake in Yingxin Town of Wenchuan County, Academic Journal of Second Military Medical University, 29, 7, pp. 737-740, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y., Gong, J., Hong, Y., Song, Y.
AUTHOR FULL NAMES: Li, Yi (55983807900); Gong, Jianhuaa Hua (59157665500); Hong, Yu (55244498800); Song, Yiquan (55428354300)
55983807900; 59157665500; 55244498800; 55428354300
An UAV remote sensing image-supporting technique for scenes' multi-quadtree organization and inter-source dispatch
(2009) Gaojishu Tongxin/Chinese High Technology Letters, 19 (9), pp. 971 - 976, Cited 1 times.
DOI: 10.3772/j.issn.1002-0470.2009.09.016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350521830&doi=10.3772%2Fj.issn.1002-0470.2009.09.016&partnerID=40&md5=9f97adfafa274c0bd92fe8fbeaa4bdae

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China; Sea Use Surveillance Center of Shenzhen, Qingshuihe, Shenzhen, China
ABSTRACT: Aiming at the data organization and data dispatch problems in building a global virtual scene with multi-source images including unmanned aerial vehicle (UAV) images, this paper explores the UAV image pre-processing, the simplified sphere projection suitable for visualization, and the structure of the global virtual scene. Based on this, an UAV image-supporting structure of the model for multi-quadtree organization in the global scene is proposed, and the key techniques for inter-source linking and dispatching of the data of multi-source images including UAV images are given. The result of the experiment performed using the UAV images acquired in the 5.12 Wenchuan earthquake as the data source shows that the methods presented in the paper can reduce the data redundancy, promote the system running efficiency, make data management and updating convenient, and effectively provide visualization service in disaster response and management.
AUTHOR KEYWORDS: Digital earth; Multiple linear quadtree; Pyramid image; UAV image; UAV remote sensing
INDEX KEYWORDS: Digital earth; Multiple linear quadtree; Pyramid image; UAV image; UAV remote sensing; Data visualization; Evolutionary algorithms; Image reconstruction; Indexing (of information); Remote sensing; Remotely operated vehicles; Visualization; Unmanned aerial vehicles (UAV)
REFERENCES: undefined, (2003); 
Nyg̊ards, Jonas, Navigation aided image processing in UAV surveillance: Preliminary results and design of an airborne experimental system, Journal of Robotic Systems, 21, 2, pp. 63-72, (2004); 
Du, Qian, Automatic registration and mosaicking for airborne multispectral image sequences, Photogrammetric Engineering and Remote Sensing, 74, 2, pp. 169-181, (2008); 
undefined, (2005); 
Goodchild, Michael F., A hierarchical spatial data structure for global geographic information systems, CVGIP: Graphical Models and Image Processing, 54, 1, pp. 31-44, (1992); 
Bartholdi, John J., Continuous indexing of hierarchical subdivisions of the globe, International Journal of Geographical Information Science, 15, 6, pp. 489-522, (2001); 
White, Denis, Global grids from recursive diamond subdivisions of the surface of an octahedron or icosahedron, Environmental Monitoring and Assessment, 64, 1, pp. 93-103, (2000); 
Proceedings of Visualization 90, (1990); 
Ottoson, Patrik, Ellipsoidal quadtrees for indexing of global geographical data, International Journal of Geographical Information Science, 16, 3, pp. 213-226, (2002); 
undefined, (2006)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Cui, P., Zhu, Y., Han, Y.-S., Chen, X.-Q., Zhuang, J.
AUTHOR FULL NAMES: Cui, Peng (56706923500); Zhu, Yingyan (10143158600); Han, Yongshun (8045872900); Chen, Xiaoqing (55739112600); Zhuang, Jianqi (26538426500)
56706923500; 10143158600; 8045872900; 55739112600; 26538426500
The 12 May Wenchuan earthquake-induced landslide lakes: Distribution and preliminary risk evaluation
(2009) Landslides, 6 (3), pp. 209 - 223, Cited 380 times.
DOI: 10.1007/s10346-009-0160-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349504172&doi=10.1007%2Fs10346-009-0160-9&partnerID=40&md5=602dbfbacc8790f35ec874407282b04d

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Hunan University of Science and Technology, Xiangtan, Hunan, China
ABSTRACT: The Wenchuan earthquake, measured at M <inf>s</inf> 8.0 according to the China Earthquake Administration, occurred at 14:28 on 12 May 2008 in the Sichuan Province of China. It brought overwhelming destruction to eight provinces and cities. Landslides and rock avalanches triggered by the earthquake produced 257 landslide lakes which were distributed along the fault rupture zone and river channels. The authors traveled to the disaster zone immediately after the earthquake to examine some of the features of the debris dams and performed a quick evaluation of the potential for outburst of earthquake-induced landslide lakes for the purpose of disaster relief. The preliminary analysis indicated that the landslide lakes could be classified as those exhibiting extremely high risk, medium risk, and low risk according to field observations and remote sensing, to determine material composition, dam structure, dam height, maximum water storage capacity, and size of the population potentially affected area. The failure risk of 21 debris dams were evaluated as follows: one dam with an extremely high danger risk, seven dams with a high danger, five dams with a medium danger, and eight dams of low danger. More concern was given to the Tangjiashan Lake and different scenarios for the potential sudden failure of its dam were assessed. The risk evaluation result was accepted in full, by the earthquake disaster relief office. A successful emergency dam treatment for risk reduction was planned, based on our assessments, and these measures were quickly carried out. According to this research, the earthquake destabilized the surrounding mountains, resulting in a prolonged geohazard for the area. Landslides and debris flows will continue to develop for at least 5 to 10 years after the Wenchuan earthquake and will produce additional dammed lakes. Recommendations and plans for earthquake-landslide lake mitigation were proposed, based on past successful practices. © Springer-Verlag 2009.
AUTHOR KEYWORDS: Flood outburst; Landslide lake; Risk evaluation; Wenchuan earthquake
INDEX KEYWORDS: Affected area; Dam height; Dam structure; Debris flows; Disaster relief; Disaster zones; Earthquake disaster; Failure risk; Fault ruptures; Field observations; Material compositions; Preliminary analysis; Risk evaluation; Risk reductions; River channels; Rock avalanche; Sichuan province; Water storage capacity; Wenchuan earthquake; Dams; Debris; Disaster prevention; Earthquakes; Forestry; Lakes; Landslides; Remote sensing; Risk analysis; Risk perception; Water analysis; Floods; disaster relief; earthquake event; earthquake rupture; flood; lake; landslide; remote sensing; risk assessment; river channel; rock avalanche; Sichuan earthquake 2008; Asia; China; Eurasia; Far East; Sichuan
REFERENCES: Casagli, Nicola, Determining grain size distribution of the material composing landslide dams in the Northern Apennines: Sampling and processing methods, Engineering Geology, 69, 1-2, pp. 83-97, (2003); 
Journal of Geological Hazards and Environment Preservation, (1995); 
Journal of Mountain Science, (2000); 
Chai, Hejun, The distribution, causes and effects of damming landslides in China, Journal of the Chengdu Institute of Technology, 27, 3, pp. 302-307, (2000); 
Formation and Failure of Natural Dams in the Canadian Cordillera, (1994); 
Costa, John E., FORMATION AND FAILURE OF NATURAL DAMS., Bulletin of the Geological Society of America, 100, 7, pp. 1054-1068, (1988); 
undefined, (2009); 
Sci China Ser E, (2003); 
Bulletin of Chinese Academy of Sciences, (2008); 
Dai, Fuchu, The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China, Geomorphology, 65, 3-4, pp. 205-221, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Yao, X., Xu, C., Dai, F., Zhang, Y.-S.
AUTHOR FULL NAMES: Yao, Xin (55723721600); Xu, Chong (35184309900); Dai, Fuchu (7102055666); Zhang, Yongshuang (55883678200)
55723721600; 35184309900; 7102055666; 55883678200
Contribution of strata lithology and slope gradient to landslides triggered by Wenchuan Ms 8 earthquake, Sichuan
(2009) Geological Bulletin of China, 28 (8), pp. 1156 - 1162, Cited 27 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649233606&partnerID=40&md5=3af9ffc45645df9ae22ecb648703beb5

AFFILIATIONS: Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: It's indicated by remote sensing images interpretation and field investigations that within an area of 48678 km2, there are more than 48000 landslides geo-hazards triggered by Wenchuan earthquake. The purpose of this study was to detect correlation between landslide occurrences and strata lithology and slope gradient based on Geographic Information System (GIS) by using two parameters: namely landslide-area ration (LAR) and landslide concentration (LC). Within the study area, LAR was defined at 1.4622% and LC was defined at 0.9862 landslides/km2. The result of statistical analyses shows that LAR and LC have a positive correlation with slope gradient and most of the slides occur with slope between 25° and 50°. The Cambrian Formation has the most concentrated landslide activity with highest LAR value of 10%, LC of 6.5 Is/km2, secondly Sinian Formation, Ordovician Formation and intrusive rocks, all of these strata have high susceptibility in terms of earthquake triggered landslide. It is also indicated by comprehensive research of slope, lithology and landslide spatial distribution that in strongly fractured rocks most landslides occur at where the slope angle is less than 30°, in weakly fractured rocks, most landslides occur at where the slope angle is more than 40°.
AUTHOR KEYWORDS: GIS; Landslide; Slope gradient; Statistical analysis; Stratum; Wenchuan earthquake
INDEX KEYWORDS: Sinia
REFERENCES: Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Rodríguez, Carlos E., Earthquake-induced landslides: 1980-1997, Soil Dynamics and Earthquake Engineering, 18, 5, pp. 325-346, (1999); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Khazai, Bijan, Evaluation of factors controlling earthquake-induced landslides caused by Chi-Chi earthquake and comparison with the Northridge and Loma Prieta events, Engineering Geology, 71, 1-2, pp. 79-95, (2004); 
Wang, Huabin, Analysis of a spatial distribution of landslides triggered by the 2004 Chuetsu earthquakes of Niigata Prefecture, Japan, Natural Hazards, 41, 1, pp. 43-60, (2007); 
undefined, (2009); 
undefined, (2009); 
undefined, (2008); 
undefined, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, W., Ni, S., Chen, Y., Kanamori, H.
AUTHOR FULL NAMES: Wang, Weitao (7501762317); Ni, Sidao (7101821530); Chen, Yong (59812690000); Kanamori, Hiroo M. (7102196122)
7501762317; 7101821530; 59812690000; 7102196122
Magnitude estimation for early warning applications using the initial part of P waves: A case study on the 2008 Wenchuan sequence
(2009) Geophysical Research Letters, 36 (16), art. no. L16305, Cited 25 times.
DOI: 10.1029/2009GL038678
https://www.scopus.com/inward/record.uri?eid=2-s2.0-71949109673&doi=10.1029%2F2009GL038678&partnerID=40&md5=81991ebcaa35da8bf8fb9e1a41775274

AFFILIATIONS: School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, China; Division of Geological and Planetary Sciences, Pasadena, CA, United States
ABSTRACT: A period parameter τ<inf>C</inf> and an amplitude parameter Pd determined from the very beginning of P wave are important for earthquake early warning (EEW), yet their dependence on source mechanism, focal depth and epicentral distance has not been fully studied. After the devastating Mw7.9 Wenchuan earthquake, hundreds of M4-6 earthquakes occurred with diverse focal mechanisms and depth range of 2-20 km. We calculate τ<inf>c</inf> and Pd of these aftershocks and examine their dependence on magnitude, τ<inf>c</inf>, distance, and depth. We find that τ<inf>6</inf> correlates well with magnitude, but joint regression including distance and depth does not significantly improve the correlation. The effect of focal mechanism on the τ<inf>C</inf> -magnitude correlation is not obvious. When P wave is nodal, τ<inf>c</inf> measurement becomes inaccurate. Also, τ<inf>c</inf> is systematically greater for slow earthquakes, leading to a possible false alarm. Thus, more studies are required to discriminate slow earthquakes for robust early warning. Copyright 2009 by the American Geophysical Union.
INDEX KEYWORDS: Palladium; Amplitude parameters; Depth range; Early warning; Earthquake early warning; Epicentral distances; False alarms; Focal depth; Focal mechanism; Magnitude estimation; P waves; Source mechanisms; Wenchuan Earthquake; Earthquakes; aftershock; early warning system; earthquake epicenter; earthquake event; earthquake magnitude; focal mechanism; P-wave; source parameters
REFERENCES: Bull Seismol Soc Am, (1978); 
Bakun, William H., Early warning system for aftershocks, Bulletin of the Seismological Society of America, 84, 2, pp. 359-365, (1994); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Horiuchi, Shigeki, An automatic processing system for broadcasting earthquake alarms, Bulletin of the Seismological Society of America, 95, 2, pp. 708-718, (2005); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Proceedings of Ninth World Conference on Earthquake Engineering, (1988); 
Odaka, Toshikazu, A new method of quickly estimating epicentral distance and magnitude from a single seismic record, Bulletin of the Seismological Society of America, 93, 1, pp. 526-532, (2003); 
Olson, Erik L., The deterministic nature of earthquake rupture, Nature, 438, 7065, pp. 212-215, (2005); 
Wolfe, Cecily J., On the properties of predominant-period estimators for earthquake early warning, Bulletin of the Seismological Society of America, 96, 5, pp. 1961-1965, (2006)
PUBLISHER: American Geophysical Union
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Wen, X., Yang, X.
AUTHOR FULL NAMES: Wen, Xingping (24765583800); Yang, Xiaofeng (36717197900)
24765583800; 36717197900
The comparison of landscape metrics derived from remote sensing data before and after Wenchuan earthquake
(2009), 2, art. no. 4958984, pp. 34 - 38, Cited 1 times.
DOI: 10.1109/ETCS.2009.270
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650704478&doi=10.1109%2FETCS.2009.270&partnerID=40&md5=33941ba092430e5c755925aa13f7bda8

AFFILIATIONS: Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China; Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
ABSTRACT: Satellite remote sensing images monitoring before and after the Wenchuan earthquake were becoming of great significance in the field of disaster control and mitigation. This paper compared the landscape metrics derived from remote sensing data before and after Wenchuan earthquake. Firstly, two ASTER imageries acquired before and after earthquake were geo-referenced. Then, the two imageries were segmented and converted into vector files. Finally, six landscape metrics were computed using multi-resolution segmentation vector derived from the two imageries and the computation results before and after earthquake were compared. Comparing results, it concluded that the landscape metrics before and after earthquake are significantly different. After earthquake, the fine surface structure was destroyed due to numerous landslides and rockslides, so Perimeter Area Fractal Dimension and Splitting Index which represents shape complexity decreased. Perimeter Area Fractal Dimension and Splitting Index are more effective indexes to detect the land cover change before and after earthquake. © 2009 IEEE.
AUTHOR KEYWORDS: Earthquakes; Landscape metrics; Remote sensing; Wenchuan
INDEX KEYWORDS: Before and after; Land-cover change; Landscape metrics; Multi-resolution; Remote sensing data; Satellite remote sensing; Shape complexity; Wenchuan; Wenchuan Earthquake; Computer science; Education computing; Fractal dimension; Image reconstruction; Landslides; Metric system; Partial discharges; Remote sensing; Surface structure; Earthquakes
REFERENCES: Singh, Ashbindu, Review Articlel: Digital change detection techniques using remotely-sensed data, International Journal of Remote Sensing, 10, 6, pp. 989-1003, (1989); 
Coppin, P. R., Digital change detection methods in ecosystem monitoring: A review, International Journal of Remote Sensing, 25, 9, pp. 1565-1596, (2004); 
Garrigues, Sébastien, Using first- And second-order variograms for characterizing landscape spatial structures from remote sensing imagery, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1823-1834, (2007); 
Wen, Xingping, A simplified method for extracting mineral information from hyperspectral remote sensing image using SAM algorithm, pp. 526-529, (2007); 
Journal of China University of Geosciences, (2007); 
Tralli, David M., Satellite remote sensing of earthquake, volcano, flood, landslide and coastal inundation hazards, ISPRS Journal of Photogrammetry and Remote Sensing, 59, 4, pp. 185-198, (2005); 
McAlpine, Clive Alexander, Testing landscape metrics as indicators of habitat loss and fragmentation in continuous eucalypt forests (Queensland, Australia), Landscape Ecology, 17, 8, pp. 711-728, (2002); 
Groom, Geoff B., Remote sensing in landscape ecology: Experiences and perspectives in a European context, Landscape Ecology, 21, 3 SPEC. ISS., pp. 391-408, (2006); 
Ji, Wei, Characterizing urban sprawl using multi-stage remote sensing images and landscape metrics, Computers, Environment and Urban Systems, 30, 6, pp. 861-879, (2006); 
Moody, Aaron J., Using landscape spatial relationships to improve estimates of land-cover area from coarse resolution remote sensing, Remote Sensing of Environment, 64, 2, pp. 202-220, (1998)
SPONSORS: Huazhong University of Science and Technology, Harbin Institute of Technology, IEEE Harbin Section, IEEE Technical Committee on Learning Technol.
CONFERENCE NAME: 1st International Workshop on Education Technology and Computer Science, ETCS 2009
CONFERENCE DATE: 2009-03-07 through 2009-03-08
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, R.Q., Li, W.-L.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Li, Weile (25936551300)
55835407700; 25936551300
Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China
(2009) Bulletin of Engineering Geology and the Environment, 68 (3), pp. 363 - 371, Cited 350 times.
DOI: 10.1007/s10064-009-0207-0
https://www.scopus.com/inward/record.uri?eid=2-s2.0-68249162462&doi=10.1007%2Fs10064-009-0207-0&partnerID=40&md5=b680a102a15fe941b5dc2de89e1880eb

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: The Wenchuan Earthquake on 12 May 2008 triggered a large number of geo-hazards including landslides, slope collapses and debris flows. Field investigations and remote-sensing interpretation identified 11,308 geo-hazards in 16 seriously damaged counties in Sichuan Province, south west China. The paper reports an analysis of the distribution of these geo-hazards, particularly the earthquake-triggered landslides. Not surprisingly, the most significant geo-hazards were related to the main fault and on the hanging-wall side, although some occurred in deeply incised river gorges further away from the main rupture zone. Due to the high seismic intensity of the earthquake, most of the large landslides moved at high speed and for considerable distances. © Springer-Verlag 2009.
AUTHOR KEYWORDS: 2008 Wenchuan Earthquake; Distribution rule; Earthquake-triggered geo-hazards; GIS analysis; Hanging-wall effect; Mobility
INDEX KEYWORDS: 2008 Wenchuan Earthquake; Distribution rule; GIS analysis; Hanging-wall effect; Mobility; Debris; Geographic information systems; Hazards; Landslides; Remote sensing; Earthquakes; earthquake event; earthquake intensity; earthquake trigger; geological hazard; GIS; hanging wall; hazard assessment; landslide; Sichuan earthquake 2008; spatial distribution; Asia; China; Eurasia; Far East; Sichuan
REFERENCES: Abrahamson, Norman A.Bolt, Empirical response spectral attenuation relations for shallow crustal earthquakes, Seismological Research Letters, 68, 1, pp. 94-109, (1997); 
Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996); 
Bao, Yejing, Probabilistic analysis of earthquake-induced landslides, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 24, 1, pp. 66-70, (2005); 
Boore, David M., Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: A summary of recent work, Seismological Research Letters, 68, 1, pp. 128-153, (1997); 
Campbell, Kenneth W., Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra, Seismological Research Letters, 68, 1, pp. 154-179, (1997); 
Science and Technology Review, (2008); 
Why Was Wenchuan Earthquake so Serious 2008 06 26, (2008); 
Seismology and Geology, (2008); 
Bergsturz Und Menschenleben, (1932); 
Hsü, Kenneth Jinghwa, Catastrophic debris streams (sturzstroms) generated by rockfalls, Bulletin of the Geological Society of America, 86, 1, pp. 129-140, (1975)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tang, C., Jing, Z., Jingtao, L.
AUTHOR FULL NAMES: Tang, Chuan (35932953300); Jing, Zhu (35096278800); Jingtao, Liang (59336615100)
35932953300; 35096278800; 59336615100
Emergency assessment of seismic landslide susceptibility: A case study of the 2008 Wenchuan earthquake affected area
(2009) Earthquake Engineering and Engineering Vibration, 8 (2), pp. 207 - 217, Cited 35 times.
DOI: 10.1007/s11803-009-9025-4
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349595899&doi=10.1007%2Fs11803-009-9025-4&partnerID=40&md5=168a602ba49f5e46727d56f59dfc2699

AFFILIATIONS: State Key Laboratory of Geohazard Prevention, Chengdu University of Technology, Chengdu, China
ABSTRACT: The 8.0 M<inf>w</inf> Wenchuan earthquake triggered widespread and large scale landslides in mountainous regions. An approach was used to map and assess landslide susceptibility in a given area. A numerical rating system was applied to five factors that contribute to slope instability. Factors such as lithology, topography, streams and faults have an important influence as event-controlling factors for landslide susceptibility assessment. A final map is provided to show areas of low, medium, and high landslide susceptibility. Areas identified as having high landslide susceptibility were located in the central, northeastern, and far south regions of the study area. The assessment results will help decision makers to select safe sites for emergency placement of refuges and plan for future reconstruction. The maps may also be used as a basis for landslide risk management in the study area.
AUTHOR KEYWORDS: GIS; Landslide; Qingchuan area; Susceptibility; Wenchuan earthquake
INDEX KEYWORDS: Affected area; Controlling factors; Decision makers; GIS; Landslide susceptibility; Large-scale landslides; Mountainous regions; Numerical rating; Qingchuan area; Slope instability; Study areas; Susceptibility; Wenchuan earthquake; Earthquakes; Geographic information systems; Lithology; Risk analysis; Risk management; Landslides
REFERENCES: Akgun, Aykut, GIS-based landslide susceptibility for Arsin-Yomra (Trabzon, North Turkey) region, Environmental Geology, 51, 8, pp. 1377-1387, (2007); 
Conoscenti, Christian, GIS analysis to assess landslide susceptibility in a fluvial basin of NW Sicily (Italy), Geomorphology, 94, 3-4, pp. 325-339, (2008); 
Landslide Risk Assessment, (1997); 
García-Rodríguez, M. J., Susceptibility assessment of earthquake-triggered landslides in El Salvador using logistic regression, Geomorphology, 95, 3-4, pp. 172-191, (2008); 
Kamp, Ulrich, GIS-based landslide susceptibility mapping for the 2005 Kashmir earthquake region, Geomorphology, 101, 4, pp. 631-642, (2008); 
undefined, (2009); 
Analytic Hierarchy Process, (1980); 
Tang, Chuan, A study on compilation of landslide risk map, Journal of Natural Disasters, 13, 3, pp. 8-12, (2004); 
Van Westen, Cees J., Landslide hazard and risk zonation - Why is it still so difficult?, Bulletin of Engineering Geology and the Environment, 65, 2, pp. 167-184, (2006); 
Landslide Hazard Zonation A Review of Principles and Practice, (1984)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shuai, X.-H., Hou, J.-S., Liu, Q.
AUTHOR FULL NAMES: Shuai, Xianghua (7003661314); Hou, Jiansheng (8724835000); Liu, Qin (55712259200)
7003661314; 8724835000; 55712259200
Analysis and simulation of spatial distribution of disaster based on disaster reports from discrete dots at earthquake site
(2009) Dizhen Dizhi, 31 (2), pp. 321 - 333, Cited 5 times.
DOI: 10.3969/j.issn.0253-4967.2009.02.013
https://www.scopus.com/inward/record.uri?eid=2-s2.0-69849111196&doi=10.3969%2Fj.issn.0253-4967.2009.02.013&partnerID=40&md5=9da6cc17a4531103fd5b5fc9defb767e

AFFILIATIONS: China Earthquake Networks Center, Beijing, China; China Earthquake Administration, Beijing, China
ABSTRACT: Earthquake always happens in an instantaneous and abrupt way, and the aftermath of an earthquake is difficult to be expected. The earthquake fieldwork teams are very difficult to arrive at the earthquake-stricken site and to provide the relevant information in 2 hours after an earthquake breaks out. We usually call this period of time as the "black-box" period of earthquake. The M<inf>s</inf> 8.0 Wenchuan earthquake caused extremely high damage and wide influencing range,and how to quickly obtain the information on the disaster situation is of vital significance to earthquake emergency commanding and disaster mitigation. Actually ,in this time section, people in the quake-affected area may gain some local disaster information, but how to collect, analyze and process this disaster information, and to provide it as reference information to the decision-makers for disaster mitigation and relief are the important research interests in emergency commanding. Therefore, the National Headquarters for Earthquake Disaster Mitigation has established the earthquake disaster short-message-service experimental platform which is based on the public service number 12322 for disaster mitigation to enable the interactive link between the handsets or other wireless terminals of the disaster reporting personnel at the earthquake-stricken area and the backstage headquarters, and to carry on corresponding processing of the information gained to further shorten the "black-box" period. The basic concept of the earthquake disaster short-message-service fast report platform is to define the handset or other wireless message terminal users as the disaster reporter, after an earthquake occurs, the earthquake disaster short-message-service central management platform sends out the downward invitation short message to collect earthquake disaster situation firstly, and upon receiving this short message, the disaster reporting personnel report the disaster situation of his/her own area to the earthquake disaster short-message-service central management platform in a preset format. After receiving the reports,the central management platform will make the analysis and spatial location on the national map, and carry on the algorithmic analysis of these spots to simulate the regional spatial distribution of the disaster. The disaster situation collection and analysis process on this platform is a dynamic change process with the disaster situation data collected, reflecting the earthquake disaster distribution information dynamically. The article introduces the interpolation algorithm and the technical realization in the simulation of disaster spatial distribution based on the reported messages of disaster situation from discrete spots on the earthquake disaster report platform. The discrete disaster situation spot is defined as Dot(x,y,z) ,in which x is the longitude of the discrete disaster situation spot, y is the latitude of the discrete disaster situation spot, and z is the attribute information of the discrete disaster situation spot. The value of z is 1,2,3 or 4 respectively, 1 expresses no shaking felt or shaking felt slightly; 2 expresses shake felt strongly, but no damage caused; 3 expresses damage caused ,but no casualties; 4 expresses severe damage and casualties. Through analyzing the characteristics of discrete disaster situation spot information, and by contrasting among several interpolation algorithms, we finally adopted the method which combines GIS spatial analysis with Thiesen space interpolation algorithm to carry on the areal interpolation analysis for the discrete spot. The concrete algorithm steps are : (1) using Thiesen polygon algorithm to carry on the division and the interpolation of the sampling site, and to set up a polygon ; (2) regarding the z value,the Z value of the interpolation point distributing in the Thiesen polygon region is equal to Z value of the sampling site in this region; (3) revising the outer boundary of GRID image. The interpolation calculation usually creates a GRID image with rectangle outer boundaries, which does not conform to the actual disaster distribution. So,this article uses the BUFFER analysis as the geographical space analysis method to determine the boundary of the calculating region; and (4)revising the internal boundaries. Different local disaster situation distributions exist in the Thiesen polygon,the partitioning of different disaster regions is usually not very smooth, so revision is made to the internal boundaries by means of re-sampling. This article uses the nearest neighborhood method to carry on the resampling analysis and computation. Based on the above method and model, we develop the experimental system by ARCGIS and WebSevice technology. The system was applied to the Wenchuan earthquake to a certain extent. The paper presents the analysis results of the data collected up to 24; 00, May 12, 2008, and the results tally basically with the actual disaster situation. The above model and system can make dynamic analysis and simulation with the change of the disaster information collecting points, and thus can promptly reflect and determine ,to a certain extent, the rough distribution of earthquake disaster and provide the relatively accurate disaster distribution information for the earthquake emergency commanding and disaster mitigation.
AUTHOR KEYWORDS: Dynamic simulation; Earthquake disaster spot; Spatial interpolation analysis
INDEX KEYWORDS: algorithm; decision making; disaster management; earthquake damage; earthquake event; GIS; image analysis; mitigation; mortality; Sichuan earthquake 2008; spatial distribution
REFERENCES: Geographical Research, (2008); 
Li, Cuiping, Ore grade interpolation based on Thiessen polygon method, Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban)/Journal of Liaoning Technical University (Natural Science Edition), 26, 4, pp. 488-491, (2007); 
China Rural Water and Hydropower, (2007); 
China Journal of Highway and Transport, (2002); 
Shuai, Xianghua, Study on management technology of earthquake emergency information and implementation of commander information query system, Earthquake, 26, 3, pp. 97-98, (2006); 
Journal of Natural Disasters, (2006); 
Zhao, Bo, Building and visualization of 3D seismic model, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences, 32, 4, pp. 549-553, (2007); 
Engineering of Surveying and Mapping, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Sato, H.P., Harp, E.L.
AUTHOR FULL NAMES: Sato, Hiroshi P. (55633316632); Harp, Edwin L. (6603753438)
55633316632; 6603753438
Interpretation of earthquake-induced landslides triggered by the 12 May 2008, M7.9 Wenchuan earthquake in the Beichuan area, Sichuan Province, China using satellite imagery and Google Earth
(2009) Landslides, 6 (2), pp. 153 - 159, Cited 152 times.
DOI: 10.1007/s10346-009-0147-6
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67349233094&doi=10.1007%2Fs10346-009-0147-6&partnerID=40&md5=1a936357ecbdbf134e4d236a981599f9

AFFILIATIONS: Geography and Crustal Dynamics Research Center, Geospatial Information Authority of Japan, Tsukuba, Ibaraki, Japan; Geological Survey, Denver Federal Center, Denver, CO, United States
ABSTRACT: The 12 May 2008 M7.9 Wenchuan earthquake in the People's Republic of China represented a unique opportunity for the international community to use commonly available GIS (Geographic Information System) tools, like Google Earth (GE), to rapidly evaluate and assess landslide hazards triggered by the destructive earthquake and its aftershocks. In order to map earthquake-triggered landslides, we provide details on the applicability and limitations of publicly available 3-day-post- and pre-earthquake imagery provided by GE from the FORMOSAT-2 (formerly ROCSAT-2; Republic of China Satellite 2). We interpreted landslides on the 8-m-resolution FORMOSAT-2 image by GE; as a result, 257 large landslides were mapped with the highest concentration along the Beichuan fault. An estimated density of 0.3 landslides/km2 represents a minimum bound on density given the resolution of available imagery; higher resolution data would have identified more landslides. This is a preliminary study, and further study is needed to understand the landslide characteristics in detail. Although it is best to obtain landslide locations and measurements from satellite imagery having high resolution, it was found that GE is an effective and rapid reconnaissance tool. © 2009 Springer-Verlag.
AUTHOR KEYWORDS: Earthquake; FORMOSAT-2; Google Earth; Landslides; Satellite; Sichuan; SPOT5; Wenchuan
INDEX KEYWORDS: FORMOSAT-2; Google Earth; Sichuan; SPOT5; Wenchuan; Earthquakes; Geographic information systems; Internet; Landslides; Satellite imagery; aftershock; earthquake; GIS; hazard assessment; landslide; satellite imagery; Sichuan earthquake 2008; SPOT; Asia; Beichuan; China; Eurasia; Far East
REFERENCES: Colesanti, Carlo, Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry, Engineering Geology, 88, 3-4, pp. 173-199, (2006); 
Dai, Fuchu, The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China, Geomorphology, 65, 3-4, pp. 205-221, (2005); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Acta Geologica Sinica, (2008); 
Crustal Deformation and Source Fault of the Sichuan Wenchuan Earthquake in 2008, (2008); 
Google Earth; 
undefined, (2008); 
undefined, (2008); 
undefined, (2006); 
Parise, Mario, A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake, Engineering Geology, 58, 3-4, pp. 251-270, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, Z., Zhang, Y., Ke, T., Guo, D.
AUTHOR FULL NAMES: Zhang, Zuxun (8560993100); Zhang, Yongjun (55577971100); Ke, Tao (35755731700); Guo, Dahai (57198473903)
8560993100; 55577971100; 35755731700; 57198473903
Photogrammetry for first response in wenchuan earthquake
(2009) Photogrammetric Engineering and Remote Sensing, 75 (5), pp. 510 - 513, Cited 25 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649322072&partnerID=40&md5=44390b0d6962224028b5d6f79b8d8fb6

AFFILIATIONS: School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, Hubei, China; China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing, Beijing, China
ABSTRACT: It was probably the first time in China that advanced photogrammetric technique was used to process mass unconventional aerial images for fast response under a time critical situation. It played an irreplaceable positive role in providing timely information for earthquake rescue activities. The experience with parallel processing was extremely successful and demonstrates the need and its potential for such technology to be part of the national emergency response system in the future. © 2009 American Society for Photogrammetry and Remote Sensing.
INDEX KEYWORDS: Aerial images; Fast response; National emergencies; Parallel processing; Photogrammetric technique; Rescue activities; Wenchuan Earthquake; Earthquakes; Photogrammetry; hazard management; photogrammetry; Sichuan earthquake 2008; Asia; China; Eurasia; Far East
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, S.-J., Kong, J.-M., Cui, Y., Fayou, F.-Y., Wu, W.-P.
AUTHOR FULL NAMES: Tian, Shujun (36609420200); Kong, Jiming (55793897000); Cui, Yun (57188824346); Fayou, A. (36607707800); Wu, Wenping (57198678602)
36609420200; 55793897000; 57188824346; 36607707800; 57198678602
Research on responsive mechanism between earthquake-induced mountain hazards and environmental background in typical region of Wenchuan Earthquake: A case study of Mianzhu County
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (3), pp. 209 - 215, Cited 4 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649277884&partnerID=40&md5=2da7d370812ffa6b66dfbc29fc7b5684

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: 297 earthquake-induced mountain hazards of Mianzhu county were obtained with field investigation and interpretation of remote-sensing images, GIS technique was used to finish the statistical data which were about the relationship between distribution of hazards and environmental factors, including distance from seismogenic faults, lithology, altitude, river, slope and aspect of slope. And research on the responsive mechanism between the distribution of hazards and factors. The main results of the study can be summarized as follows. 1) The distance from seismogenic faults was the leading factor for the distribution of earthquake-induced mountain hazards. The high density of earthquake-induced mountain hazards was distributed within 8 km from seismogenic faults, and the density in hangingwall of seismogenic faults was obviously higher than that in footwall. The density of hazards in the footwall of seismogenic faults decreased within 10 km and increased from 10 km to 14 km and decreased again from 14 km to 16 km, which was affected by secondary seismogenic faults. 2) Hard rocks were well developed with the highest density of earthquake-induced mountain hazards, and the density increased with the slope of mountain. 3) The release of seismic energy was restricted by landform and river. The high density of earthquake-induced mountain hazards was in the high altitude, steep slope, intense incision and high drainage density. 4) The earthquake-induced mountain hazards occurred in higher probability if the ruptured direction of faults was consistent with the gradient direction of topography and the aspect of slope, which was convenient for seismic energy transmitting.
AUTHOR KEYWORDS: Earthquake-induced mountain hazards; GIS analysis; Seismogenic fault; Wenchuan Earthquake
INDEX KEYWORDS: Drainage density; Environmental factors; Field investigation; GIS analysis; Gradient direction; Hard rocks; High altitude; High density; Mountain hazard; Remote sensing images; Seismic energy; Seismogenic fault; Seismogenic faults; Statistical data; Steep slope; Wenchuan Earthquake; Geographic information systems; Hazards; Image enhancement; Landforms; Lithology; Probability density function; Remote sensing; Earthquakes
REFERENCES: Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Romeo, Roberto Walter, Seismically induced landslide displacements: A predictive model, Engineering Geology, 58, 3-4, pp. 337-351, (2000); 
Papadopoulos, Gerassimos A., Magnitude-distance relations for earthquake-induced landslides in Greece, Engineering Geology, 58, 3-4, pp. 377-386, (2000); 
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Huang, Jianliang, Dynamic analysis of seismic stability of slopes, 17, 4, pp. 121-122, (1997); 
Chinese Journal of Geotechnical Engineering, (1999); 
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Yong, Li, Surface rupture, thrusting and strike-slipping in the Wenchuan earthquake of Sichuan, China, Journal of Chengdu University of Technology (Science and Technology Edition), 35, 4, pp. 404-413, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, J.-F., You, Y., Fan, J., Lü, J.
AUTHOR FULL NAMES: Liu, Jinfeng (59454532200); You, Yong (35811595800); Fan, Jianrong (8727506000); Lü, Juan (55701438400)
59454532200; 35811595800; 8727506000; 55701438400
The study on the potential debris flow triggered by Wenchuan earthquake: A case study of the Guanshan gully in the upper reaches of Minjiang river
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (SUPPL.), pp. 70 - 75, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649226137&partnerID=40&md5=872725dd535afcc3ed4a2cb09cc0f47c

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; University of Chinese Academy of Sciences, Beijing, China
ABSTRACT: After the Wenchuan earthquake, a lot of potential debris flow gullies are activated as active debris flow gullies because of the earthquake. These debris flow gullies will be in the active period for a long time in the future. The debris flow outbreak scale and frequency increase obviously, which threatens life and property safety of the people in the disaster area and influences the reconstruction of the disaster area. This paper takes Guanshan gully in the upper minjiang river as an example to discuss about the cause, starting mode and damage of the potential debris flow triggered by the earthquake preliminarily. The Guanshan gully can be defined as a typical potential debris flow gully through the interpretation of remote sensing image before the earthquake and aerial image after the earthquake. The Guanshan gully changes from a potential debris flow gully into an active and high-frequency debris flow gully. The cause is that the earthquake results in many collapses and landslides in the basin, which provides rich material sources for the debris flow. Through estimation, there are 2 landslides, 21 collapses and 7.8 million m3 loose solid materials in the Guanshan gully. The starting mode of the debris flow in the Guanshan gully is that under the condition of precipitation, the landslides in the upper basin turn into debris flows, then with the acceptance of the materials runoff scoured from the two-side slope surface, the debris flows scour the loose materials in the gully bed strongly to increase debris flow scale at the same time, therefore harmful debris flows are formed. If the rainstorm frequency of P equals to 1% or 2%, the blockage caused by debris flows has more possibility. Once debris flows block the main river, the blockage backwater and outburst flood will threaten the safety of people's life and property in the upper and lower river. at the same time, debris flow will threaten the safety of "213 provincial road".
AUTHOR KEYWORDS: Guanshan Gully; Potential debris flow gully; Upper reaches of Minjiang River; Wenchuan Earthquake
INDEX KEYWORDS: Aerial images; Debris flow scale; Debris flows; Disaster areas; Guanshan Gully; High frequency HF; Loose materials; Minjiang River; Potential debris flow gully; Remote sensing images; Side slope; Solid material; Starting mode; Upper reaches of Minjiang River; Wenchuan Earthquake; Earthquakes; Image reconstruction; Landslides; Remote sensing; Rivers; Water; Debris
REFERENCES: Journal of Mountain Science, (2008); 
Bulletin of Chinese Academy of Sciences, (2008); 
Journal of Engineering Geology, (2008); 
Sedimentary Geology and Tethyan Geology, (2007); 
undefined, (1981); 
Journal of Engineering Geology, (2008); 
undefined, (2009); 
undefined, (2009); 
Resour Environ Yangtze River Basin, (2004); 
Journal of Catastrophology, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Su, F., Cui, P., Ge, Y., Liu, Y.
AUTHOR FULL NAMES: Su, Fenghuan (14033176000); Cui, Peng (56706923500); Ge, Yonggang (26039083000); Liu, Yinghui (36647679000)
14033176000; 56706923500; 26039083000; 36647679000
Impact of mountain hazards induced by Wenchuan Earthquake on the hydropower projects along Dujiangyan-Wenchuan highway
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (3), pp. 151 - 156, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649200361&partnerID=40&md5=2715ef9a5ffb822e2d35c3f01cf2fa64

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Wenchuan Earthquake, which occurred on May 12, 2008 in Sichuan Province of China, has the characteristic of high earthquake magnitude, great intensity, wide area and serious disaster. The secondary mountain hazards caused heavy casualties, serious property damage, and the emergency rescue system of roads and transportation blocked. Xuankou-Wenchuan section of Dujiangyan-Wenchuan highway was selected to discuss the distribution of mountain hazards induced by '5·12' Wenchuan Earthquake. The different types and distribution rules of mountain hazards were extracted and analyzed by means of remote sensing technology and field observation. According to the survey of earthquake losses of hydropower projects in the minjiang river, the hazards pattern of landslide and debris flow to hydropower projects was analyzed. The thirty-seven debris flow gullies along Minjiang River threaten the safety of the highway and bridges cross the gullies. The debris flow hazards assessment results showed that 16 were of high hazardousness, which would result in blocking of the main channel that possibly brought about flood in the downstream of the rive. In the end, the reduction countermeasures were given.
AUTHOR KEYWORDS: Debris flow; Hydropower project; Mountain hazards; Risk assessment; Wenchuan earthquake
INDEX KEYWORDS: Debris flow; Debris flow hazards; Debris flows; Distribution rule; Earthquake magnitudes; Emergency rescue; Field observations; Hazardousness; Hydropower project; Hydropower projects; Minjiang River; Mountain hazard; Mountain hazards; Property damage; Remote sensing technology; Sichuan province; Wenchuan earthquake; Wide area; Debris; Earthquakes; Hazards; Highway systems; Landforms; Remote sensing; Risk management; Risk assessment
REFERENCES: Sichuan Environment, (2006); 
undefined, (2009); 
Chen, Shengshui, Analysis of effects of '5.12' Wenchuan Earthquake on Zipingpu Concrete Face Rock-fill Dam, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 30, 6, pp. 795-801, (2008); 
undefined, (2009); 
Journal of Natural Disasters, (2001); 
Journal of Sediment Research, (2000); 
Sci China Ser E, (2003); 
Bulletin of Chinese Academy of Sciences, (2008); 
undefined, (2009); 
undefined, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Han, Y.-S., Cui, P., Zhu, Y., Su, F., Zhang, Y., Yang, Y.-C.
AUTHOR FULL NAMES: Han, Yongshun (8045872900); Cui, Peng (56706923500); Zhu, Yingyan (10143158600); Su, Fenghuan (14033176000); Zhang, Yong (59071470500); Yang, Yingchang (35212298700)
8045872900; 56706923500; 10143158600; 14033176000; 59071470500; 35212298700
Remote sensing monitoring and assessment of traffical damage by Wenchuan earthquake - A case study in Du-Wen Highway
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (3), pp. 273 - 283, Cited 13 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649183608&partnerID=40&md5=7dee8f67ae15d89631e638686b919f51

AFFILIATIONS: School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, Hunan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; School of Water Conservancy and Hydroelectric Power, Sichuan University, Chengdu, Sichuan, China
ABSTRACT: Wenchuan Earthquake triggered large-scale and group-occurring secondary mountain hazards. They not only severely destroyed the highways and blocked the traffic, but also blocked the process of earthquake relief and reconstruction. After the remote sensing monitoring and field survey in Xuankou-Yanmen part of the Dujiangyan-Wenchuan Highway, the type and the distribution of the secondary mountain hazards were described the damage of the subgrades, pavements, bridges and tunnels along the Dujiangyan-Wenchuan Highway were analyzed. In addition, combining with the temporal characteristics of secondary mountain hazards, the countermeasure and suggestion of the relief and reconstruction of the traffic system were given. The research result showed that: 1) In the research region, strong earthquake causes a lot of secondary mountain hazards such as collapses, landslides, debris flows, dammed lakes. There are 3863 collapses with a total area of 71.985 km2, 74 debris flow gullies, 18 landslides, 5 dammed lakes, 6 ground fissures which is longer than 1 km. 2) Earthquake and secondary mountain hazards severely destroyed the highway and traffic. From Xuankou to Yanmen in Wenchuan, there are 875 blocks in Dujiangyan-Wenchuan Highway. Also, there are barriers with a length of 83.622 km. 81.19% of the highway, including 87 bridges and 10 tunnels, has been destroyed. 3) The distribution of the main kind of collapse, landslide, debris flow, dammed lake mainly depends on seismic intensity, geological structure, topography and geomorphology and rock characters. 4) Using the technology of GIS and remote sensing, the disaster evaluation and dynamic monitoring can be effectively carried out, so it can provide the scientific basis and references to the relief and reconstruction.
AUTHOR KEYWORDS: DuJiangyan-Wenchuan Highway; Remote sensing monitoring; Secondary mountain hazards; Wenchuan Earthquake
INDEX KEYWORDS: Debris flows; Disaster evaluation; DuJiangyan-Wenchuan Highway; Dynamic monitoring; Field surveys; Geological structures; Ground fissure; Mountain hazard; Remote sensing monitoring; Research results; Secondary mountain hazards; Seismic intensity; Temporal characteristics; Traffic systems; Wenchuan Earthquake; Damage detection; Debris; Earthquakes; Geomorphology; Hazards; Lakes; Landforms; Landslides; Remote sensing; Restoration; Tunnels; Highway bridges
REFERENCES: undefined, (2009); 
Remote Sensing for Land, (1993); 
Mitomi, Hajime, Determination of the areas with building damage due to the 1995 Kobe earthquake using airborne MSS images, International Geoscience and Remote Sensing Symposium (IGARSS), 5, pp. 2871-2873, (2002); 
Earth Science Frontiers, (2003); 
Journal of Remote Sensing, (2008); 
Journal of Natural Disasters, (1997); 
Earthquake Research in Sichuan, (1995); 
The performance of girder bridges in Wenchuan Earthquake and a new method for seismic protection, 28, 5, pp. 20-26; 
Journal of Mountain Science, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Tian, H.-L., Qiao, J.-P., Zhu, B., Song, M.-Q.
AUTHOR FULL NAMES: Tian, Hongling (14520009600); Qiao, Jianping (24485090400); Zhu, Bo (55229988900); Song, Mengqiang (36895864600)
14520009600; 24485090400; 55229988900; 36895864600
Repaid evaluation on environment resources carrying capacity of earthquake stricken area in Chengdu
(2009) Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition), 41 (SUPPL.), pp. 45 - 52, Cited 4 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649176539&partnerID=40&md5=f08dd45a51444941f2ac8161d3fc4e30

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Wenchuan earthquake caused great damage to Dujiangyan and other 4 counties of Chengdu city. The quick evaluation on environment resources carrying capacity is an important part of the post-earthquake reconstruction. Current carrying capacity usually evaluate single resources of a certain area, few of them assess a whole city. This paper gets the evaluated target and objects according to the carrying capacity definitions. Five factors including geology disasters' distribution, physiognomy environment, plow land, water and travel resource were used for evaluation the carrying capacity of a city area. Each factor's weight got from the specialists. The research area were divided to 3 km × 3 km grids by GIS software. The final result is make up with grid's evaluation result which concluded by five factor layer's overlay. Some suggestions base on the evaluation result were given and the end.
AUTHOR KEYWORDS: Carrying capacity; Chengdu; Earthquake area; Environment resource
INDEX KEYWORDS: Carrying capacity; Chengdu; Current carrying capacity; Environment resource; Evaluation results; Geology disaster; GIS software; Research areas; Wenchuan Earthquake; Earthquakes
REFERENCES: China Popul Resour Environ, (1998); 
Price, David, Carrying capacity reconsidered, Population and Environment, 21, 1, pp. 5-26, (1999); 
Smaal, Aad C., Minimum requirements for modelling bivalve carrying capacity, Aquatic Ecology, 31, 4, pp. 423-428, (1997); 
Environmental Protection, (2008); 
Land Resources Herald, (2005); 
Water Resources Protection, (2006); 
Agricultural Reseach in the Arid Areas, (2001); 
Discovery of Nature, (1991); 
Progress in Geography, (2008); 
Yellow River, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhao, J.-D., Zhang, Z.-Q.
AUTHOR FULL NAMES: Zhao, Jidong (55818066900); Zhang, Zhiqiang (56178818600)
55818066900; 56178818600
Development, application and suggestions on earthquake early warning system
(2009) Geological Bulletin of China, 28 (4), pp. 456 - 462, Cited 3 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-83455242757&partnerID=40&md5=91476ebc48d1242ebb213f081aacabec

AFFILIATIONS: National Science Library, Chinese Academy of Sciences, Beijing, China
ABSTRACT: Starting from related concepts, the authors pointed out differences between earthquake prediction, forecasting and early warning, furthermore, earthquake early warning is prompting alarm made after an earthquake instead of any prediction or forecasting made before. Theoretical principle of earthquake early warning is based on wave velocity difference, typical earthquake early warning systems such as Mexico City's Seismic Alarm System (SAS), Japan's Earthquake Early Warning System (EEW) and Urgent Earthquake Detection and Alarm System(UrEDAS), California's Earthquake Alarm System (ElarmS), Taiwan's Earthquake Quick Reporting System and so on, have been widely applied in earthquake prevention and disaster reduction, as well as for significant projects (such as dams, nuclear power plants). Despite of all, earthquake early warning system is still in its early stage, certain imperfections are unavoidable such as false warning and delayed warning, whereas potential benefits remains in practical use and it has already effectively solved some problems. After the devastating 5 · 12 Wenchuan Earthquake, China is ready to set up similar earthquake early warning system. Based on its features and practical national situation, this paper has probed into construction issues from certain aspects including fundamental faulting research, seismic monitoring network as well as information publishing.
AUTHOR KEYWORDS: Earthquake forecasting earthquake early warning earthquake early warning system/seismic alarm system; Earthquake prediction
REFERENCES: undefined, (2004); 
undefined, (2007); 
undefined, (2004); 
undefined, (2007); 
Can We Predict Earthquakes, (2008); 
Wyss, Max, Evaluation of proposed earthquake precursors, pp. 1-94, (2013); 
San Francisco Bulletin, (1868); 
Heaton, Thomas H., A model for a seismic computerized alert network, Science, 228, 4702, pp. 987-990, (1985); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Earthquake Early Warning Starting 1 October 2007, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, R.Q., Li, W.-L.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Li, Weile (25936551300)
55835407700; 25936551300
Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China
(2009) Science in China, Series E: Technological Sciences, 52 (4), pp. 810 - 819, Cited 124 times.
DOI: 10.1007/s11431-009-0117-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-63349110728&doi=10.1007%2Fs11431-009-0117-1&partnerID=40&md5=3063a620a0b010ba7b84673fc1be0300

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: As the Wenchuan Earthquake was of high magnitude and shallow seismic focus, it caused great damage and serious geohazards. By the field investigation and the interpretation of remote-sensing information after the earthquake and by using means of GIS technology, the distribution of geohazards triggered by the earthquake are analyzed and the conclusions are as follows: (1) The earthquake geohazards showed the feature of zonal distribution along the earthquake fault zone and linear distribution along the rivers; (2) the distribution of earthquake geohazards had a marked hanging wall effect, for the development density of geohazards in the hanging wall of earthquake fault zone was obviously higher than that in the foot wall and the width of strong development zone in the hanging wall was about 10 km; (3) the topographical slope was a main factor which controlled the development of earthquake geohazards and a vast majority of hazards were distributed on the slopes of 20° to 50°; (4) the earthquake geohazards had a corresponding relationship with the elevation and micro-landform, for most hazards happened in the river valleys and canyon sections below the elevation of 1500 to 2000 m, particularly in the upper segment of canyon sections (namely, the turning point from the dale to the canyon). Thin ridge, isolated or full-face space mountains were most sensitive to the seismic wave, and had a striking amplifying effect. In these areas, collapses and landslides were most likely to develop; (5) the study also showed that different lithologies determined the types of geohazards, and usually, landslides occurred in soft rocks, while collapses occurred in hard rocks. © 2009 Science in China Press and Springer-Verlag GmbH.
AUTHOR KEYWORDS: 5.12 Wenchuan Earthquake; GIS analysis; Hanging wall effect; Remote-sensing information; Seismogenic geohazard distribution
INDEX KEYWORDS: Face recognition; Geographic information systems; Hazards; Landforms; Landslides; Remote sensing; Seismic waves; 5.12 Wenchuan Earthquake; GIS analysis; Hanging wall effect; Remote-sensing information; Seismogenic geohazard distribution; Earthquakes
REFERENCES: Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Catastrophic Landslides in China, (2008); 
Emergency Hunting Report of Geohazards in the Disaster Area of 512 Wenchuan Earthquake, (2008); 
Abrahamson, Norman A.Bolt, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bulletin of the Seismological Society of America, 86, 1 SUPPL. B, pp. S93-S99, (1996); 
Abrahamson, Norman A.Bolt, Empirical response spectral attenuation relations for shallow crustal earthquakes, Seismological Research Letters, 68, 1, pp. 94-109, (1997); 
Boore, David M., Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: A summary of recent work, Seismological Research Letters, 68, 1, pp. 128-153, (1997); 
Campbell, Kenneth W., Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra, Seismological Research Letters, 68, 1, pp. 154-179, (1997); 
Sadigh, Khosrow, Attenuation relationships for shallow crustal earthquakes based on California strong motion data, Seismological Research Letters, 68, 1, pp. 180-189, (1997); 
Natural Sciences Newsletter, (1999); 
Yanxiang, Yu, Effects of the hanging wall and footwall on peak acceleration during the Chi-Chi earthquake, Taiwan, Acta Seismologica Sinica, 23, 6, pp. 620-621, (2001)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, Z., Xu, Q., Xu, B., Zhang, W.
AUTHOR FULL NAMES: Wang, Zhihua (57192240156); Xu, Qide (35087154700); Xu, Bin (55245616000); Zhang, Wei (59638375500)
57192240156; 35087154700; 55245616000; 59638375500
Emergency aero-photo survey after the 5.12 Wenchuan Earthquake, China
(2009) Science in China, Series E: Technological Sciences, 52 (4), pp. 835 - 843, Cited 6 times.
DOI: 10.1007/s11431-009-0080-x
https://www.scopus.com/inward/record.uri?eid=2-s2.0-63349085720&doi=10.1007%2Fs11431-009-0080-x&partnerID=40&md5=00be544ea80eebd40b1a9ee8bf723c22

AFFILIATIONS: China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing, Beijing, China
ABSTRACT: After the 5.12 Wenchuan Earthquake which took place on May 12, 2008, aerial remote sensing has rapidly covered all the influence sites of the earthquake, emergency aero-photo interpretation has revealed the disaster distribution limitation, and captured the information of location, dimension of the destroyed houses, roads and other structures, blocked rivers, etc, which provided destroying conditions of the time for rescuing lives, rebuilding traffic lines and estimating disaster situation. The further interpretation and analysis indicate that large scale second growth geological disasters mainly distribute in the distance of 0-300 km and 45°-50° orientation from the epicenter. About 137 latent large-scale landslides and debris-flows will occur in this rain season and coming several years, so how to avoid current geological disasters as well as the latent large disasters should be considered in making rebuilding and developing plan. © 2009 Science in China Press and Springer-Verlag GmbH.
AUTHOR KEYWORDS: 5.12 Wenchuan Earthquake; Aerial remote sensing; Destroying conditions; Potential disaster; Second growth geological disasters
INDEX KEYWORDS: Accidents; Autonomous underwater vehicles; Debris; Disasters; Earthquakes; Remote sensing; 5.12 Wenchuan Earthquake; Aerial remote sensing; Destroying conditions; Potential disaster; Second growth geological disasters; Disaster prevention
REFERENCES: Remote Sensing for Land Resources, (2007); 
Remote Sensing for Land Resources, (2007); 
Sichuan Regional Geological Records, (1991)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, C., Jiang, Y., Li, B.
AUTHOR FULL NAMES: Wang, Chunxiang (56909068300); Jiang, Yuijing (7404832361); Li, B. (59457362700)
56909068300; 7404832361; 59457362700
Damage analysis of tunnels caused by earthquake using GIS and Quantification theory II
(2009), Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055017729&partnerID=40&md5=db491d21d96f2f137555fceb515ab047

AFFILIATIONS: Department of Civil Engineering, Nagasaki University, Nagasaki, Nagasaki, Japan
ABSTRACT: Mountain tunnels, being underground structures and situated deep within rock layers, are generally considered to suffer appreciably less damage from earthquakes than surface structures. However, it has been reported that many tunnels were damaged by the 1923 Great Kantou earthquake, the 1995 Great Hanshin Earthquake, the 1999 Taiwan Chi-chi Earthquake, the 2004 Mid Niigata Prefecture Earthquake and the May 2008 Great Wenchuan Earthquake in China. In this study, the damaged tunnels in the 2004 Mid Niigata Prefecture Earthquake are the study objects. The damage patterns are analyzed and the information which is considered to be of influence, such as the distance to epicenter, the completion time, the geological conditions, etc., are collected. A database of the damaged tunnels has been created using a Geographic Information System (GIS). The influence ranking for these factors has been analyzed using Hayashi's quantification theory II. The degree of the tunnel damage has also been assessed using GIS and Hayashi's quantification theory II. The field investigation is in close agreement with the assessment results following Hayashi's quantification theory II. © ISRM International Symposium on Rock Mechanics, SINOROCK 2009.
INDEX KEYWORDS: Damage detection; Geographic information systems; Information use; Rock mechanics; Underground structures; ChiChi earthquake; Completion time; Damage analysis; Field investigation; Geological conditions; Hanshin Earthquake; Mountain tunnels; Wenchuan Earthquake; Earthquakes
REFERENCES: Asakura, Toshihiro, Mountain tunnels damage in the 1995 Hyogoken-Nanbu Earthquake, Quarterly Report of RTRI (Railway Technical Research Institute) (Japan), 39, 1, pp. 9-14, (1998); 
Exploring Arcobjects, (2001); 
Hashash, Youssef M.A., Seismic design and analysis of underground structures, Tunnelling and Underground Space Technology, 16, 4, pp. 247-293, (2001); 
Proceedings of the Japan Academy, (1954); 
Method of Quantification, (1976); 
Monthly Report on Earthquakes and Volcanoes in Japan October 2004, (2004); 
Ncree Newsletter, (2008); 
Proceedings of the Jsce Earthquake Engineering Symposium, (2005); 
Introduction to Earthquake Engineering, (1984); 
Sharma, Sunil, Underground opening damage from earthquakes, Engineering Geology, 30, 3-4, pp. 263-276, (1991)
PUBLISHER: International Society for Rock Mechanics isrm@inec.pt
CONFERENCE NAME: ISRM International Symposium on Rock Mechanics 2009, SINOROCK 2009
CONFERENCE DATE: 2009-05-19 through 2009-05-22
CONFERENCE LOCATION: Hong Kong
CONFERENCE CODE: 139056
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Ehrlich, D., Guo, H., Molch, K., Ma, J., Pesaresi, M.
AUTHOR FULL NAMES: Ehrlich, Daniele (7102215708); Guo, Huadong (56415384100); Molch, Katrin (6505919209); Ma, Jianwen (7406200149); Pesaresi, Martino (7004047814)
7102215708; 56415384100; 6505919209; 7406200149; 7004047814
Identifying damage caused by the 2008 wenchuan earthquake from VHR remote sensing data
(2009) International Journal of Digital Earth, 2 (4), pp. 309 - 326, Cited 87 times.
DOI: 10.1080/17538940902767401
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957354769&doi=10.1080%2F17538940902767401&partnerID=40&md5=447d7f968cb608572c1f0bfa45d9050b

AFFILIATIONS: European Commission Joint Research Centre, Brussels, Belgium; Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The paper discusses the potential of very high resolution (VHR) satellite imagery for post-earthquake damage assessment in comparison with the role of aerial photographs. Post-disaster optical and radar satellite data are assessed for their ability to resolve collapsed buildings, destroyed transportation infrastructure, and specific land cover changes. Optical VHR imagery has shown to be effective in quantifying building stock and for assessing damage at the building level. High-resolution synthetic aperture radar (SAR) imagery requires further research to identify optimum information extraction procedures for rapid assessment of affected buildings. Based on current technical and operational capabilities increasing efforts should be devoted to the generation of spatial datasets for disaster preparedness. © 2009, Taylor & Francis Group, LLC.
AUTHOR KEYWORDS: Damage assessment; Earthquake; Sar; Settlements; Sichuan; Vhr
REFERENCES: Mceer Research and Accomplishments 2003 2004, (2004); 
André, Gilles, Building destruction and damage assessment after earthquake using high resolution optical sensors. The case of the Gujarat earthquake of January 26, 2001, International Geoscience and Remote Sensing Symposium (IGARSS), 4, pp. 2398-2400, (2003); 
Proceedings Acrs 99, (1999); 
Earthquake Team Report, (2001); 
China Publishes Identities of 19 000 Dead in May Quake, (2008); 
Hoffmann, Jörn, Mapping damage during the Bam (Iran) earthquake using interferometric coherence, International Journal of Remote Sensing, 28, 6, pp. 1199-1216, (2007); 
Lu, Dengsheng, Change detection techniques, International Journal of Remote Sensing, 25, 12, pp. 2365-2401, (2004); 
Matsuoka, Masashi, Building damage detection using satellite SAR intensity images for the 2003 Algeria and Iran earthquakes, International Geoscience and Remote Sensing Symposium (IGARSS), 2, pp. 1099-1102, (2004); 
Pesaresi, Martino, Rapid damage assessment of built-up structures using VHR satellite data in tsunami-affected areas, International Journal of Remote Sensing, 28, 13-14, pp. 3013-3036, (2007); 
Saito, Keiko, Visual damage assessment using high-resolution satellite images following the 2003 Bam, Iran, earthquake, Earthquake Spectra, 21, SUPPL. 1, pp. S309-S318, (2005)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Z., Chen, Q., Zhou, J., Tian, B.
AUTHOR FULL NAMES: Li, Zhen (57184557300); Chen, Quan (55616263500); Zhou, Jianmin (57209636353); Tian, Bangseng Sen (34882193500)
57184557300; 55616263500; 57209636353; 34882193500
Analysis of synthetic aperture image characteristics for seismic disasters in the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031685, Cited 10 times.
DOI: 10.1117/1.3153906
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957324164&doi=10.1117%2F1.3153906&partnerID=40&md5=641aeb9b8c6529fb273ab1dd6be9f5bf

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: More than 69,000 people died following the magnitude 8.0 Wenchuan earthquake of May 12, 2008. Bad weather hampered relief efforts, and in some cases rescuers had to trek into the disaster area on foot and search for trapped survivors by hand as roads were blocked by debris. Due to travel difficulties, spatial information needs to be extracted in the disaster area by remote sensing techniques. The main problem focused on in this paper is how to use the all-weather and all-day/night capability of Synthetic Aperture Radar (SAR) to extract primary seismic disaster information after the earthquake. Using air- and space-borne SAR images with different bands, polarizations and incidence angles, including multi-polarization X-band air-borne data, C-band polarimetric Radarsat-2, X-band TerraSAR-X with high resolution, multi-polarization X-band COSMO-SkyMed and L-band multi-polarization ALOS-PalSAR space-borne data, we perform image characteristics analysis of landslides. Obvious differences can be recognized between old and new landsides in SAR images with different bands. Multi-polarization SAR can play an important role in landslide discrimination. Two SAR images at different incidence angles do not provide much more information if the difference between the two angles is small. Landslide recognition accuracy strongly depends on the direction of view, especially for large incidence angles, in which case the characteristic difference for landslide recognition is great. There are different polarization responses between a landslide and its surroundings that can be used to recognize the landslide. Interferometric SAR images, on the other hand, do not provide good recognition capability due to temporal decorrelation and resolution. Meanwhile, information extraction of barrier lakes using different resolution and incidence angle SAR images is analyzed in this paper; small incidence angles and high resolutions improve the object recognition and information extraction of barrier lakes. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: barrier lake; interferometric SAR; landslide; polarizational response; SAR image characteristic; Wenchuan Earthquake
INDEX KEYWORDS: Artificial intelligence; Disasters; Earthquakes; Image analysis; Image enhancement; Information retrieval; Information use; Interferometry; Lakes; Landslides; Object recognition; Polarization; Remote sensing; Space-based radar; Synthetic aperture radar; Barrier lakes; Interferometric SAR; polarizational response; SAR Images; Wenchuan Earthquake; Radar imaging
REFERENCES: Science in China, (1997); 
Earth Science Frontiers, (2001); 
Liu Hefu, Structural styles of the Longmenshan thrust belt and evolution of the foreland basin in western Sichuan Province, China, Dizhi Xuebao/Acta Geologica Sinica, 68, 2, pp. 101-118, (1994); 
Zhang, Yueqiao, Briefing on the Wenchuan 8.0-magnitude earthquake in Sichuan, SW China paying condolence to the victims in the Wenchuan earthquake, Acta Geologica Sinica (English Edition), 82, 7, pp. 1013-1015, (2008); 
undefined; 
Iwashita, Atsushi, Study of ground surface displacement estimation using ALOS/PALSAR D-InSAR interferometry, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1616-1617, (2007); 
DLR Cluster Applied Remote Sensing Terrasar X Ground Segment Basic Product Specification Document, (2008); 
Cosmo Skymed Mission Cosmo Skymed SAR Products Handbook, (2006); 
Remote Sensing for Land Resources, (2007); 
Principles and Applications of Imaging Radar, (1998)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, C., Zhang, H., Wu, F., Zhang, B., Tang, Y., Wu, H., Wen, X., Yan, D.
AUTHOR FULL NAMES: Wang, Chao (55141316100); Zhang, Hong (56179236500); Wu, Fan (57104120200); Zhang, Bo (57199725987); Tang, Yixian (7404592033); Wu, Hong'an (15052729600); Wen, Xiaoyang (8535446100); Yan, Dongmei (35868211600)
55141316100; 56179236500; 57104120200; 57199725987; 7404592033; 15052729600; 8535446100; 35868211600
Disaster phenomena of Wenchuan earthquake in high resolution airborne synthetic aperture radar images
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031690, Cited 28 times.
DOI: 10.1117/1.3154558
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957323820&doi=10.1117%2F1.3154558&partnerID=40&md5=4fa7de60ba87d383f1214db976f60e89

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The devastating Wenchuan Earthquake occurred in Sichuan Province, Southwestern China, with a magnitude of 8.0 on May 12, 2008. Most buildings along the seismic zone were ruined, resulting in infrastructure damage to factories, traffic facilities and power supplies. The earthquake also triggered geological disasters, such as landslides, debris flow, landslide lakes, etc. During the rescue campaign the remote sensing aircrafts of the Chinese Academy of Sciences (CAS), equipped with synthetic aperture radar (SAR) and optical sensors, flew over the disaster area and acquired many high resolution airborne SAR images. We first describe the basic characteristics of SAR imagery. The SAR images of buildings are simulated, and the backscattering mechanism of the buildings is analyzed. Finally, the various disaster phenomena are described and analyzed in the high resolution airborne SAR images. It is shown that certain phenomena of ruins could be identified clearly in high resolution SAR images in proper imaging conditions, while the functional destruction is quite difficult to detect. With calibrated data, the polarmetric SAR interferometry could be used to analyze the scattering mechanism and 3D distribution of the scattering center, which are redound to earthquake damage assessment. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: Damage Assess-ment; High Resolution SAR; SAR Simulation; Wenchuan Earthquake
INDEX KEYWORDS: Aircraft accidents; Damage detection; Disasters; Earthquakes; Image analysis; Landslides; Remote sensing; Synthetic aperture radar; Airborne synthetic aperture radars; Basic characteristics; Chinese Academy of Sciences; Damage Assess-ment; High-resolution SAR; Remote sensing aircrafts; SAR simulation; Wenchuan Earthquake; Radar imaging
REFERENCES: Zhang Decheng, Preliminary study on visual interpretation marks of building damages caused by earthquakes on aerophotograph, Earthquake, 1, 1, pp. 26-30, (1993); 
Journal of Catastrophology, (1997); 
J Geologic Hazards Environ Preservat, (1995); 
Journal of Natural Disasters, (1996); 
Journal of Natural Disasters, (1998); 
Earth Science Frontiers, (2003); 
13th World Conference on Earthquake Engineering, (2004); 
Journal of Natural Disasters, (2002); 
Proc Rem Sens Technol Forum, (2003); 
Yang, Zhe, Quick determination of epicentral regions using airborne earthquake disastrous SAR image characters, Dizhen Dizhi, 21, 4, pp. 452-458, (1999)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Huang, X., Wei, C., Li, H.
AUTHOR FULL NAMES: Huang, Xiaoxia (36181146300); Wei, Chengjie (7401658054); Li, Hongga (8280427500)
36181146300; 7401658054; 8280427500
Remote sensing analysis of the distribution and genetic mechanisms of transportation network damage caused by the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031650, Cited 7 times.
DOI: 10.1117/1.3154387
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957321349&doi=10.1117%2F1.3154387&partnerID=40&md5=be22b32c8e413b6299f3863b099b654e

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Transportation networks are among the most important lifelines for post-seismic relief and reconstruction. It is imperative to investigate, monitor, and analyze transportation network damage caused by earthquake disasters in near real-time. Herein, we present a method for the analysis of seismic hazards and the subsequent assessment of the impact of the Wenchuan earthquake on transportation networks employing remote sensing and geographical information systems. In this method, the locations, shapes, lengths, and areas of the main damaged segments of state and provincial highways are interpreted and surveyed based on airborne ADS40 data and diverse remotely sensed satellite images of varying resolutions before and after the disaster. Next, the spatial distributions of geological disasters such as landslides, land-collapses, mud-rock flows, bank-collapses, earthquake rifts, and faults, as well as barrier lakes, were analyzed. These types of geological disasters commonly cause transportation network blockage and damage. Finally, geographical factors, including geological structures, topography, and landscapes, were collected and integrated with the disaster statistics to quantitatively analyze the primary transportation seismic disaster indices, and evaluate the geographical characteristics and genetic mechanisms of seismic disasters. Our results indicate that transportation network blockage and damage occurred in 808 segments, with a total length of 170.2 km, and occupied 29.66% of the total length of the state and provincial highways in the core disaster regions. The distribution of transportation network blockage and damage has obvious geographical characteristics. It is concentrated in regions near geological faults, folds, rock crushes, and breaks, especially near the Longmenshan-controlling fault, which played a decisive role in the Wenchuan earthquake. The remotely sensed images, maps, and analytical results on the geographical distribution and genetic mechanisms of the transportation network blockage and damage effectively guided the national department of transportation repair and reconstruction planning for the disaster areas. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: Assessment; Genetic mechanism analysis; Remote sensing; Seismic hazard; Transportation network blockage and damage; Wenchuan earthquake
INDEX KEYWORDS: Damage detection; Disasters; Faulting; Geographical distribution; Hazards; Remote sensing; Seismic response; Topography; Assessment; Genetic mechanism; Seismic hazards; Transportation network; Wenchuan Earthquake; Earthquakes
REFERENCES: Liu, Jiahang, Acquisition of earthquake damage information based on remote sensing technology: History, current situation and trend, Journal of Natural Disasters, 13, 6, pp. 46-52, (2004); 
Seismic Damage of Tangshan Earthquake, (2025); 
Assessment of Nantou Twain 921 Earthquake Disasters by Satellite Remote Sensing, (2000); 
Earth Science Frontiers, (2003); 
Liu, Jianhang, Imagery region analyzing method of urban building's earthquake damage: A comparative study with point characteristics-based criterion approaches, Journal of Natural Disasters, 13, 5, pp. 149-156, (2004); 
Journal of Natural Disasters, (2001); 
Journal of Natural Disasters, (2002); 
Proc 2nd Int Airborne Rem Sens Conf, (1996); 
Gamba, Paolo Ettore, GIS and image understanding for near-real-time earthquake damage assessment, Photogrammetric Engineering and Remote Sensing, 64, 10, pp. 987-994, (1998); 
Proc 2nd Int Sym Operationalization of Remote Sensing, (1999)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liao, J., Shen, G.
AUTHOR FULL NAMES: Liao, Jingjuan (7402988316); Shen, Guozhuang (26039527600)
7402988316; 26039527600
Detection of land surface change due to the Wenchuan earthquake using multitemporal advanced land observation satellite-phased array type L-band synthetic aperture radar data
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031680, Cited 6 times.
DOI: 10.1117/1.3142466
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957315911&doi=10.1117%2F1.3142466&partnerID=40&md5=d79053616fbbccd26490fbf6ebb6d35d

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: A strong earthquake, with a magnitude of 8.0, hit in the Wenchuan area of China on May 12, 2008, resulting in significant changes to the land surface. Remote sensing (RS), especially synthetic aperture radar (SAR) RS technology can play a key role in detecting changes of the land surface. In the present paper, multitemporal Advanced Land Observation Satellite- Phased Array type L-band Synthetic Aperture Radar (ALOS-PALSAR) data acquired on Feb. 17 and May 19, 2008 were used to analyze the land surface changes caused by the Wenchuan earthquake. The characteristics of the land surface in several sites hit by the earthquake are presented, by comparison of pre- and post-seismic images. Subsequently, the land surface changes caused by the earthquake were extracted using change detection and classification methods. To this end, land surface change detection can provide a detailed basis for assessing an earthquakes impact. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: change detection; earthquake; multitemporal; SAR
INDEX KEYWORDS: Remote sensing; Space-based radar; Surface measurement; Synthetic aperture radar; Change detection; Classification methods; Land surface change; Multi-temporal; Observation satellites; Phased array type l-band synthetic aperture radars; Strong earthquakes; Wenchuan Earthquake; Earthquakes
REFERENCES: Proceedings of the 1998 Asian Conference on Remote Sensing, (1998); 
Rathje, Ellen M., Earthquake damage identification using multi-temporal high-resolution optical satellite imagery, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 5045-5048, (2005); 
Matsuoka, Masashi, Use of satellite SAR intensity imagery for detecting building areas damaged due to earthquakes, Earthquake Spectra, 20, 3, pp. 975-994, (2004); 
Matsuoka, Masashi, Building damage mapping of the 2003 Bam, Iran, earthquake using Envisat/ASAR intensity imagery, Earthquake Spectra, 21, SUPPL. 1, pp. S285-S294, (2005); 
Yang, Zhe, Quick determination of epicentral regions using airborne earthquake disastrous SAR image characters, Dizhen Dizhi, 21, 4, pp. 452-458, (1999); 
Gamba, Paolo Ettore, Rapid damage detection in the bam area using multitemporal SAR and exploiting ancillary data, IEEE Transactions on Geoscience and Remote Sensing, 45, 6, pp. 1582-1589, (2007); 
Yonezawa, Chinatsu, Decorrelation of SAR data by urban damages caused by the 1995 Hyogoken-nanbu earthquake, International Journal of Remote Sensing, 22, 8, pp. 1585-1600, (2001); 
Proc 6th International Conference on Seismic Zonation, (2000); 
Zebker, Howard A., Decorrelation in interferometric radar echoes, IEEE Transactions on Geoscience and Remote Sensing, 30, 5, pp. 950-959, (1992); 
Matsuoka, Masashi, Damage mapping for the 2004 Niigata-ken Chuetsu earthquake using Radarsat images, (2007)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Han, Y.-S., Liu, H., Cui, P., Su, F., Du, D.
AUTHOR FULL NAMES: Han, Yongshun (8045872900); Liu, Hongjiang (36521211700); Cui, Peng (56706923500); Su, Fenghuan (14033176000); Du, Dongsheng (36520858300)
8045872900; 36521211700; 56706923500; 14033176000; 36520858300
Hazard assessment on secondary mountain-hazards triggered by the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031645, Cited 19 times.
DOI: 10.1117/1.3154419
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957315421&doi=10.1117%2F1.3154419&partnerID=40&md5=7d17351eef9aab785f70dba20365800e

AFFILIATIONS: School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, Hunan, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; School of City and Environment, Yunnan University of Finance and Economics, Kunming, Yunnan, China
ABSTRACT: The Wenchuan earthquake triggered large numbers of secondary mountain hazards which caused great casualties and losses. Based upon remote sensing interpretation, field investigation, and disaster surveys, we describe the general situation of the earthquake, study the spatial distribution of the secondary mountain hazards, establishe a hazard degree index model according to disaster-forming factors and seismic parameters, and make a hazard assessment on the secondary mountain hazards. Moreover, using geographical information system and remote sensing technologies and the principle of regional factors, the study area is classified into four hazard zones: no-hazard zone, low-hazard zone, moderate-hazard zone, and high-hazard zone. The results show that the high-hazard zone is distributed along the three main fault zones of the Longmen Mountain, mainly along the Minjiang River valley, the Yuzi Creek, the Jianjiang River valley, and other river valley areas. The other hazard zones are distributed outside the high-hazard zone in a ring shape, respectively, and their hazard degrees decrease gradually, especially in the low elevation areas and the Chengdu Plain where the hazard degree is the lowest. The developmental trend of secondary mountain hazards is analyzed in view of geodynamics. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: debris flow; hazard assessment; landslide; rock fall; Wenchuan Earthquake
INDEX KEYWORDS: Disasters; Information use; Landforms; Landslides; Remote sensing; Rivers; Rock bursts; Debris flows; Field investigation; Hazard Assessment; Remote sensing interpretation; Remote sensing technology; Rockfalls; Seismic parameters; Wenchuan Earthquake; Earthquakes
REFERENCES: Bulletin of Chinese Academy of Sciences, (2008); 
Earthquake Research in China, (2006); 
Science and Technology Review, (2008); 
Journal of Remote Sensing, (2008); 
Journal of Engineering Geology, (2008); 
Costa, John E., FORMATION AND FAILURE OF NATURAL DAMS., Bulletin of the Geological Society of America, 100, 7, pp. 1054-1068, (1988); 
Journal of Mountain Science, (2000); 
Geological Review of Japan, (1978); 
Keefer, David K., LANDSLIDES CAUSED BY EARTHQUAKES., Bulletin of the Geological Society of America, 95, 4, pp. 406-421, (1984); 
Rodríguez, Carlos E., Earthquake-induced landslides: 1980-1997, Soil Dynamics and Earthquake Engineering, 18, 5, pp. 325-346, (1999)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, L., Wu, Y., Zuo, Z., Chen, Z., Wang, X., Zhang, W.
AUTHOR FULL NAMES: Liu, Liangyun (8600097300); Wu, Yanhong (57221579071); Zuo, Zhengli (15129287700); Chen, Zhengchao (7409481437); Wang, Xingxing (15066357000); Zhang, Wenjuan (35235960300)
8600097300; 57221579071; 15129287700; 7409481437; 15066357000; 35235960300
Monitoring and assessment of barrier lakes formed after the Wenchuan earthquake based on multitemporal remote sensing data
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031665, Cited 21 times.
DOI: 10.1117/1.3153915
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957313087&doi=10.1117%2F1.3153915&partnerID=40&md5=b01d307aec10cd3fe978a8b0b48a1a97

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The Wenchuan earthquake on May 12, 2008, triggered many secondary disasters, among which the barrier lakes formed by landslides were extremely serious. We monitored the number and spatial distribution of the barrier lakes in the earthquake-hit area from ADS40 airborne images, which covered areas of about 23,700 km2. The results showed that there were 51 barrier lakes in the monitored area; among these, 10 were large-scale lakes and 14 were middle-sized lakes. The barrier lakes were distributed along the Longmen Mountain fault from the northeast to southwest direction. We used the dimensionless blockage index (DBI) to assess the potential risk of the barrier lakes. A small DBI value indicated a stable barrier lake, but the lake might have a higher risk with potential accumulative secondary disasters. Our study emphasized the monitoring and analysis of the high-risk Tangjiashan Barrier Lake from the multitemporal ADS40 airborne images acquired on May 16, 19, 23, and 27. We found that the water level at this barrier lake reached 66 m within 15 days after the barrier lake was formed, and the reservoir storage capacity reached 1.2 × 108 m3 with an increase of 8 × 106 m3 of water per day. Therefore, it faced a very real and urgent risk of dam break and overflow, considering the predicted storm rainfall and the continuous aftershocks. According to the analysis results, airborne remote sensing demonstrated the advantages of being intelligent, being able to maneuver, and providing high resolution. These advantages allowed us to quickly monitor and assess the distribution and dynamic changes of the barrier lakes in the earthquake-hit region using multitemporal airborne remote sensing images. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: airborne remote sensing; barrier lake; Longmen Mountain fault zone; Wenchuan earthquake
INDEX KEYWORDS: Digital storage; Disasters; Earthquakes; Faulting; Remote sensing; Reservoirs (water); Risk assessment; Water levels; Airborne remote sensing; Barrier lakes; Fault zone; Monitoring and analysis; Monitoring and assessment; Multi-temporal remote sensing; Reservoir storage capacity; Wenchuan Earthquake; Lakes
REFERENCES: A Modern Dictionary of Geography, (1990); 
Ermini, Leonardo, Prediction of the behaviour of landslide dams using a geomorphological dimensionless index, Earth Surface Processes and Landforms, 28, 1, pp. 31-47, (2003); 
Quaternary Sciences, (2004); 
Earth Science Frontiers, (2008); 
Stone, Richard, Sichuan disaster: Landslides, Flooding Pose Threats As Experts Survey Quake's Impact, Science, 320, 5879, pp. 996-997, (2008); 
Korup, Oliver, Geomorphometric characteristics of New Zealand landslide dams, Engineering Geology, 73, 1-2, pp. 13-35, (2004); 
Casagli, Nicola, Geomorphic analysis of landslide dams in the Northern Apennine, Chikei, 20, 3, pp. 219-249, (1999); 
Schuster, Robert L., PERSPECTIVE ON LANDSLIDE DAMS., pp. 1-20, (1986); 
J Jpn Landslide Soc, (1995); 
Quincey, Duncan J., Early recognition of glacial lake hazards in the Himalaya using remote sensing datasets, Global and Planetary Change, 56, 1-2, pp. 137-152, (2007)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Guo, H.
AUTHOR FULL NAMES: Guo, Huadong (56415384100)
56415384100
Guest Editorial: Remote sensing of the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031699, Cited 3 times.
DOI: 10.1117/1.3153899
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957310930&doi=10.1117%2F1.3153899&partnerID=40&md5=4fb4a4867c3dce0955711153d42480f7

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Editorial
PUBLICATION STAGE: Final

Li, Z., Chen, Q., Zhou, J., Tian, B.
AUTHOR FULL NAMES: Li, Zhen (57184557300); Chen, Quan (55616263500); Zhou, Jianmin (57209636353); Tian, Bangseng Sen (34882193500)
57184557300; 55616263500; 57209636353; 34882193500
Erratum: Analysis of synthetic aperture range image characteristics for seismic disasters in the Wenchuan earthquake (Journal of Applied Remote Sensing (2009) 3 (031685))
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 030101, Cited 0 times.
DOI: 10.1117/1.3170899
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957305738&doi=10.1117%2F1.3170899&partnerID=40&md5=87f9ac95588c3a67c826f2058f5f7005

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Erratum
PUBLICATION STAGE: Final
OPEN ACCESS: ALL OPEN ACCESS; BRONZE OPEN ACCESS

Fan, X., Du, X., Tan, J., Zhu, J.
AUTHOR FULL NAMES: Fan, Xiangtao (7403394160); Du, Xiaoping (56506043800); Tan, Jian (15763430400); Zhu, Junjie (55575860800)
7403394160; 56506043800; 15763430400; 55575860800
Three-dimensional visualization simulation assessment system based on multi-source data fusion for the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031640, Cited 9 times.
DOI: 10.1117/1.3154425
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957302801&doi=10.1117%2F1.3154425&partnerID=40&md5=7a8e75001f5925c5aeabfbdc8c07c42a

AFFILIATIONS: Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: We have developed a visual three-dimensional simulation and assessment system of the Wenchuan earthquake zone using the Digital Earth concept and highly efficient spatial information visualization technology. Our goal is to provide a foundation for earthquake disaster relief and reconstruction. A number of major collapses, landslides, mud-rock flows and other geological disasters are analysed in the system, and the system can be used to monitor and analyse earthquake relief, rescue and insurance to provide first-hand source material for disaster situation assessment. Multi-sensor, multi-temporal, multi-resolution remote sensing data and multi-scale DEM data are integrated into this system, and produce a sequence of comprehensive resolution datasets. We present management methods for a dynamic multi-resolution terrain model and multi-level scene. These methods are based on the model division, delaminating algorithm, and make use of high-speed buffering mechanisms to achieve a multi-level large-scale real-time rendering of scenes in the disaster areas, which also effectively reduces the rendering delay, and achieves smooth, seamless roaming at different model levels. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: multi-resolution; multi-source data fusion; three-dimensional visualization; Wenchuan earthquake
INDEX KEYWORDS: Data fusion; Data visualization; Disaster prevention; Earthquakes; Emergency services; Information systems; Remote sensing; Rendering (computer graphics); Visualization; Delaminating algorithms; High-speed buffering; Multi-resolution remote sensing; Multisource data; Spatial informations; Three dimensional simulations; Three dimensional visualization; Wenchuan Earthquake; Three dimensional computer graphics
REFERENCES: Remote Sensing for Land Resources, (1993); 
Xibei Seismology Journal, (2008); 
Journal of Natural Disasters, (2002); 
Earthquake Remote Sensing Image Change Detection Technology Research, (2003); 
Abdalla, Rifaat M., Integrated distributed GIS approach for earthquake disaster modeling and visualization, pp. 1183-1192, (2005); 
Kellogg, Louise H., Interactive visualization to advance earthquake simulation, Pure and Applied Geophysics, 165, 3-4, pp. 621-633, (2008); 
Vučinić, Dean, Distributed 3D Information Visualization - Towards Integration of the Dynamic 3D Graphics and Web Services, Communications in Computer and Information Science, 4 CCIS, pp. 155-168, (2007)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Lei, L., Liu, L., Zhang, L., Bi, J., Wu, Y., Jiao, Q., Zhang, W.
AUTHOR FULL NAMES: Lei, Liping (57203377707); Liu, Liangyun (8600097300); Zhang, Li (58853352100); Bi, Jiantao (7103093390); Wu, Yanhong (57221579071); Jiao, Quanjun (23492392400); Zhang, Wenjuan (35235960300)
57203377707; 8600097300; 58853352100; 7103093390; 57221579071; 23492392400; 35235960300
Assessment of spatial variation of the collapsed houses in Wenchuan earthquake with aerial images
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031670, Cited 4 times.
DOI: 10.1117/1.3154544
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953352527&doi=10.1117%2F1.3154544&partnerID=40&md5=eb0bbf32dedf3236435222b2e59e90b9

AFFILIATIONS: Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: Collapsing houses are one of the indicators to assess earthquake damage intensity. We monitored and analyzed the house collapse ratio and its spatial distribution in the Wenchuan Earthquake of May 12, 2008 by interpreting the aerial images. The results show that the houses were widely damaged, especially in Wenchuan County, Mianzhu City, Shifang City, and Pengzhou City in which Wenchuan County experienced the severest damage. We analyzed the spatial variation of the house collapse ratio and its relationship with earthquake intensity, geological structure, and stratum lithology. The results demonstrate that the house collapse ratio and the earthquake intensity have a positive relationship, which is controlled by the geological structure, stratum lithology, and building structure. Analysis of the collapsed houses over an extensive earthquake-damaged region using aerial images provides not only an effective assessment for the damages and losses, but also the foundation data for the analysis of earthquake intensity. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: earthquake; house collapse; image analysis; remote sensing
INDEX KEYWORDS: Antennas; Damage detection; Houses; Image analysis; Lithology; Remote sensing; Structural geology; Building structure; Collapse ratios; Damaged region; Earthquake damages; Earthquake intensity; Geological structures; Spatial variations; Wenchuan Earthquake; Earthquakes
REFERENCES: Remote Sensing for Land Resources, (1993); 
Yang Zhe, Correlation analysis of percentage of collapsing houses and seismic intensity of Tangshan earthquake, Dizhen Dizhi, 16, 3, pp. 283-288, (1994); 
Proc Japan Society of Civil Engineers 682 I 56, (2001); 
Preliminary Research and Investigation Reports for Wenchuan Earthquake, (2013); 
China Seismic Intensity Scale, (2004); 
Disaster Prevention Information
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, B., Jiao, Q., Wu, Y., Zhang, W.
AUTHOR FULL NAMES: Zhang, Bing (8835983800); Jiao, Quanjun (23492392400); Wu, Yanhong (57221579071); Zhang, Wenjuan (35235960300)
8835983800; 23492392400; 57221579071; 35235960300
Estimating soil erosion changes in the Wenchuan earthquake disaster area using geo-spatial information technology
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031675, Cited 17 times.
DOI: 10.1117/1.3153914
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953350518&doi=10.1117%2F1.3153914&partnerID=40&md5=1e99024bb0f8f1d47ba2a5fd4cb53b2a

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The secondary disasters induced by the Wenchuan earthquake of May 12, 2008, such as landslides, collapsing rocks, debris flows, floods, etc., have changed the local natural landscape tremendously and caused heavy soil erosion in the earthquake-hit areas. Using thematic mapper images taken before the earthquake and airborne images taken after the earthquake, we extracted information about the destroyed landscape by utilizing remote sensing and geographical information system techniques. Then, taking into account multi-year precipitation, vegetation cover, soil type, land use, and elevation data, we evaluated the soil erosion area and intensity using the revised universal soil loss equation. Results indicate that the soil erosion in earthquake-hit areas was exacerbated, with the severe erosion area increasing by 279.2 km2, or 1.9% of the total statistical area. Large amounts of soil and debris blocked streams and formed many barrier lakes over an area of more than 3.9 km2. It was evident from the spatial distribution of soil erosion areas that the intensity of soil erosion accelerated in the stream valley areas, especially in the valleys of the Min River and the Jian River. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: GIS; remote sensing; soil erosion; Wenchuan Earthquake
INDEX KEYWORDS: Debris; Disasters; Erosion; Geographic information systems; Information use; Land use; Remote sensing; Sediment transport; Soils; Geo-spatial informations; Natural landscapes; Revised universal soil loss equations; Secondary disasters; Soil erosion; Thematic mapper images; Vegetation cover; Wenchuan Earthquake; Earthquakes
REFERENCES: Journal of Soil and Water Conservation, (1971); 
Yoder, Daniel C., The future of RUSLE: inside the new Revised Universal Soil Loss Equation, Journal of Soil and Water Conservation, 50, 5, pp. 484-493, (1995); 
Cai Qiangguo, Process-based soil erosion and sediment yield model in a small basin in the hilly loess region, Dili Xuebao/Acta Geographica Sinica, 51, 2, pp. 108-117, (1996); 
Soil Loss Prediction Model, (2001); 
Journal of Soil and Water Conservation, (2004); 
Research of Soil and Water Conservation, (2004); 
Res Soil Water Conserv, (2000); 
Tang, Bangxing, Mountain disaster formation in northwest Sichuan, GeoJournal, 34, 1, pp. 41-46, (1994); 
Meyer, L. A., Evolution of the universal soil loss equation., Journal of Soil and Water Conservation, 39, 2, pp. 99-104, (1984); 
Agriculture Handbook, (1997)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Guo, H., Li, X., Zhang, L.
AUTHOR FULL NAMES: Guo, Huadong (56415384100); Li, Xinwu (59906534300); Zhang, Lu (57205420032)
56415384100; 59906534300; 57205420032
Study of detecting method with advanced airborne and spaceborne synthetic aperture radar data for collapsed urban buildings from the Wenchuan earthquake
(2009) Journal of Applied Remote Sensing, 3 (1), art. no. 031695, Cited 24 times.
DOI: 10.1117/1.3153902
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953337498&doi=10.1117%2F1.3153902&partnerID=40&md5=4477dd4f3f9ee7a8ac021b57b17aaf81

AFFILIATIONS: Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Haidian, Beijing, China
ABSTRACT: The large 8.0 scale earthquake that occurred in Wenchuan, Sichuan province, China on May 12, 2008 caused huge damage to people's lives and property. Airborne and spaceborne remote sensing can be used accurately and effectively in almost real-time to monitor and assess earthquake disasters, providing an important scientific basis and decision-making support for government emergency command and post-disaster reconstruction. The high resolution, multi-band, multi-polarization, and full-polarization synthetic aperture radar (SAR) system and theories developed in recent years provide important data resources and the basic methodology for post-earthquake monitoring and evaluation. In this paper, the cities of Beichuan and Dujiangyan in the Wenchuan earthquake region are chosen as study sites. Using advanced high-resolution, multi-band, multi-polarization, and full-polarization SAR data, and applying urban building backscattering models and target backscattering and polarimetric target decomposition theory, the backscattering characteristics, polarimetric characteristics and texture features between collapsed and intact buildings post-earthquake are extensively compared and analyzed. Subsequently, a new SAR detection method for collapsed urban buildings is proposed from these characterizations. Preliminary results from comparisons between this method and high-resolution optical data show that the proposed method is effective and powerful in detecting collapsed urban buildings devastated by an earthquake. © 2009 Society of Photo-Optical Instrumentation Engineers.
AUTHOR KEYWORDS: airborne and spaceborne SAR; earthquake; high-resolution; multi-band and multi-polarization; polarimetry; urban collapsed buildings
INDEX KEYWORDS: Backscattering; Behavioral research; Buildings; Decision making; Disasters; Earthquakes; Polarimeters; Polarization; Remote sensing; Synthetic aperture radar; Textures; Collapsed buildings; Full-polarization synthetic aperture radars; High resolution; Multi-polarization; Polarimetric target decomposition; Post-disaster reconstruction; Space-borne SAR; Spaceborne synthetic aperture radars; Space-based radar
REFERENCES: Radar for Earth Observation Theory and Applications, (2000); 
Cloude, Shane Robert, A review of target decomposition theorems in radar polarimetry, IEEE Transactions on Geoscience and Remote Sensing, 34, 2, pp. 498-518, (1996); 
Freeman, Anthony, A three-component scattering model for polarimetric SAR data, IEEE Transactions on Geoscience and Remote Sensing, 36, 3, pp. 963-973, (1998); 
Yamaguchi, Yoshio, Four-component scattering model for polarimetric SAR image decomposition, IEEE Transactions on Geoscience and Remote Sensing, 43, 8, pp. 1699-1706, (2005); 
Touzi, Ridha, Target scattering decomposition in terms of roll-invariant target parameters, IEEE Transactions on Geoscience and Remote Sensing, 45, 1, pp. 73-84, (2007); 
Ainsworth, Thomas L., Polarimetric SAR characterization of man-made structures in urban areas using normalized circular-pol correlation coefficients, Remote Sensing of Environment, 112, 6, pp. 2876-2885, (2008); 
Iribe, Koichi, Analysis of polarization orientation angle shifts by artificial structures, IEEE Transactions on Geoscience and Remote Sensing, 45, 11, pp. 3417-3425, (2007); 
Touzi, Ridha, A review of polarimetry in the context of synthetic aperture radar: Concepts and information extraction, Canadian Journal of Remote Sensing, 30, 3, pp. 380-407, (2004); 
Lee, Jongsen, On the estimation of radar polarization orientation shifts induced by terrain slopes, IEEE Transactions on Geoscience and Remote Sensing, 40, 1, pp. 30-41, (2002); 
Kimura, Hiroshi, Polarization orientation effects in urban areas on SAR data, International Geoscience and Remote Sensing Symposium (IGARSS), 7, pp. 4863-4867, (2005)
PUBLISHER: SPIE spie@spie.org
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, B., Li, B., Jiang, C.
AUTHOR FULL NAMES: Wu, Bo (59600352800); Li, Bing (57219043741); Jiang, Chaozhe (23110688300)
59600352800; 57219043741; 23110688300
Transportation model of emergency transportation assurance system based on the fuzzy risk control theory
(2009), pp. 3356 - 3361, Cited 0 times.
DOI: 10.1061/41039(345)553
https://www.scopus.com/inward/record.uri?eid=2-s2.0-72949120564&doi=10.1061%2F41039%28345%29553&partnerID=40&md5=8abf09181c4a63664586f6a83a4bdd38

AFFILIATIONS: College of Traffic and Transportation, Southwest Jiaotong University, Chengdu, Sichuan, China; Southwest Jiaotong University, Chengdu, Sichuan, China
ABSTRACT: After the "5.12 Wenchuan Earthquake" occurred, the transportation command and dispatch department transported a large number of disaster relief materials and personnel to the disaster areas via road transportation system in the shortest time and under the minimum risk, which effectively supported the earthquake relief and post-disaster reconstruction work. Based on summing up and reflecting the emergency transportation assurance work of Wenchuan Earthquake and through studying the rough and multi-attribute decision-making theories and methods, the concept of fuzzy risk control theory and a mathematical model is set up in this paper, combining with GIS and GPS, which perfects the vehicle dispatch system for emergency transportation. All of these lead to set up a set of high-efficiency and low-risk emergency transportation assurance system in the shortest time after the emergency events occur. Copyright ASCE 2009.
AUTHOR KEYWORDS: Decision-making model; Emergency assurance; Multi-objective planning; Risk control
INDEX KEYWORDS: Civil defense; Control theory; Decision making; Decision theory; Disaster prevention; Earthquakes; Fuzzy control; Materials handling; Mathematical models; Multiobjective optimization; Risks; Rough set theory; System theory; Transportation; Decision making models; Disaster areas; Disaster relief; Fuzzy risk; High efficiency; Multi attribute decision making; Multi-objective planning; Risk controls; Road transportation; System-based; Transportation model; Vehicle dispatch; Wenchuan Earthquake; Transportation personnel
REFERENCES: undefined; 
undefined; 
Goldberg, Andrew V., Finding Minimum-Cost Circulations by Canceling Negative Cycles, Journal of the ACM, 36, 4, pp. 873-886, (1989); 
Kemball-Cook, David, Lessons in logistics from Somalia, Disasters, 8, 1, pp. 57-66, (1984); 
A Multi Period Linear Programming Model for Optimally Scheduling the Distribution of Food Aid in West Africa, (1987)
PUBLISHER: American Society of Civil Engineers (ASCE) onlinejls@asce.org
CONFERENCE NAME: 2nd International Conference on Transportation Engineering, ICTE 2009
CONFERENCE DATE: 2009-07-25 through 2009-07-27
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Chen, N., Yang, C., Zhou, W., Hu, G., Li, H., Hand, D.
AUTHOR FULL NAMES: Chen, Ningsheng (8726157200); Yang, Chenglin (55646442300); Zhou, Wei (55443778400); Hu, Guisheng (35113314000); Li, Huan (56076976300); Hand, David (36642097500)
8726157200; 55646442300; 55443778400; 35113314000; 56076976300; 36642097500
The critical rainfall characteristics for torrents and debris flows in the Wenchuan earthquake stricken area
(2009) Journal of Mountain Science, 6 (4), pp. 362 - 372, Cited 51 times.
DOI: 10.1007/s11629-009-1064-9
https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350664439&doi=10.1007%2Fs11629-009-1064-9&partnerID=40&md5=1810f9da7c7b18f4201d51955c0ec0a9

AFFILIATIONS: Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China; Sichuan University, Chengdu, Sichuan, China; Department of Civil Engineering, University of Bristol, Bristol, United Kingdom
ABSTRACT: Critical rainfall assessment is a very important tool for hazard management of torrents and debris flows in mountainous areas. The Wenchuan Earthquake 2008 caused huge casualties and property damages in the earthquake-stricken area, which also generated large quantities of loose solid materials and increased occurrence probabilities of debris flows. There is an urgent need to quantify the critical rainfall distribution in the area so that better hazard management could be planned and if real time rainfall forecast is available, torrent and debris flow early-warning could be issued in advance. This study is based on 49-year observations (1954-2003) of up to 678 torrent and debris flow events. Detailed contour maps of 1 hour and 24 hour critical rainfalls have been generated (Due to the data limitation, there was insufficient 10 minute critical rainfall to make its contour map). Generally, the contour maps from 1 hour and 24 hours have similar patterns. Three zones with low, medium and high critical rainfalls have been identified. The characteristics of the critical rainfall zones are linked with the local vegetation cover and land forms. Further studies and observations are needed to validate the finding and improve the contour maps. © Science Press, Institute of Mountain Hazards and Environment, CAS and Springer Berlin Heidelberg 2009.
AUTHOR KEYWORDS: Critical rainfall; Debris flow; Earthquake-stricken area; Mountain torrent
REFERENCES: Bianco, G., Comparison of debris-flow events in three contiguous basins, triggered during the same storm event, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, 2, pp. 943-954, (2003); 
Caine, Nel, The rainfall intensity-duration control of shallow landslides and debris flows., Geografiska Annaler, Series A: Physical Geography, 62, 1-2, pp. 23-27, (1980); 
California Geology, (1985); 
Bulletin of Soil and Water Conservation, (1989); 
Scientia Geographica Sinica, (2006); 
Cheng, Jack D., Landslides and debris flows induced by typhoon Toraji, July 29-30, 2001 in central Taiwan, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, 2, pp. 919-929, (2003); 
Dhital, Megh Raj, Causes and consequences of the 1993 debris flows and landslides in the Kulekhani watershed, central Nepal, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, 2, pp. 931-942, (2003); 
Google Maps, (2013); 
Keefer, David K., Real-time landslide warning during heavy rainfall, Science, 238, 4829, pp. 921-925, (1987); 
Jomelli, Vincent, Hillslope debris-flow frequency since the beginning of the 20th century in the Massif des Ecrins (French Alps), International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, 1, pp. 127-137, (2003)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fu, B.-H., Shi, P.-L., Wang, P., Li, Q., Kong, P., Zheng, G.-D.
AUTHOR FULL NAMES: Fu, Bihong (7103382662); Shi, Pilong (26421447200); Wang, Ping W. (7407616360); Li, Qian (36062654700); Kong, Ping (57205397780); Zheng, Guodong (7402224441)
7103382662; 26421447200; 7407616360; 36062654700; 57205397780; 7402224441
Geometry and kinematics of the 2008 Wenchuan earthquake surface ruptures around the Qushan Town of Beichuan County, Sichuan: Implications for mitigation of seismic and geologic disasters
(2009) Acta Geophysica Sinica, 52 (2), pp. 485 - 495, Cited 37 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649236224&partnerID=40&md5=98c08109867473030b1d05da2a711d05

AFFILIATIONS: Institute of Geology and Geophysics Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China; National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
ABSTRACT: The NE-trending Yingxiu-Beichuan and Guanxian-Anxian faults in the Longmen Shan fault zone are responsible for the 12 May 2008 Ms8. 0 Wenchuan earthquake. Based on the interpretation of post-quake high-resolution remote sensing imagery and field geologic observations, the geometry and kinematics of co-seismic surface rupture as well as the seismic and geologic hazards along the Beichuan segment between Leigu Town and Qushan Town, Beichuan County, are analyzed in detail. Results indicate that surface deformation appears as an oblique thrusting with near equal vertical and right-lateral displacements ranged from 2 to 10 m, in which the largest displacement occurred along this segment in the Yingxiu-Beichuan fault, A notable distribution feature of geologic disasters and building damages induced by this earthquake shows strong hanging wall effects across the surface rupture zone; the highest density of landslides, rock falls, debris flows and building damages occurred on the northwest (hanging wall) side of the fault, but few geologic disasters developed on the southeast (foot wall) side of the fault. These effects are caused directly by the asymmetric fault geometry and the stress interaction between the fault motion and free surface of the slopes. Other factors such as material heterogeneity and spatial variation in frictional properties along the fault strike may further affect the rupture and slip patterns of oblique thrust faulting with a right-lateral strike-slip component. From view of disaster mitigation, the geometry and kinematics of surface rupture zone associated with the M<inf>s</inf>8. 0 Wenchuan earthquake also taught a realistic lesson to how to mitigate potential seismic and geologic disasters associated with future great earthquakes in highly populated region through pre-earthquake analysis and evaluation of active faults using remote sensing technique combined with field reconnaissance.
AUTHOR KEYWORDS: Coseismic surface rupture; High-resolution remote sensing, Effects of seismic and geologic disaster; Yingxiu-Beichuan fault
INDEX KEYWORDS: disaster; fault zone; geometry; image resolution; kinematics; remote sensing; rupture; Sichuan earthquake 2008; stress; Asia; Beichuan; China; Eurasia; Far East; Longmen Mountains; Sichuan
REFERENCES: Zhang, Peizlien Zhen, Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China, Acta Geophysica Sinica, 51, 4, pp. 1066-1073, (2008); 
Xiwei, Xu, The MS8.0 Wenchuan earthquake surface ruptures and its seismogenic structure, Dizhen Dizhi, 30, 3, pp. 597-629, (2008); 
Fu, Bihong, Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery, Acta Geologica Sinica (English Edition), 82, 12, pp. 1679-1687, (2008); 
Li, Haibing, Co-seisimic surface rupture and dextral-slip oblique thrusting of the Ms 8. 0 wenchuan earthquake, Acta Geologica Sinica (English Edition), 82, 12, pp. 1623-1643, (2008); 
Liu, Jingshuang Jinglan, The Ms 8. 0 Wenchuan Earthquake co-seismic rupture and its tectonic implications - An out-of-sequence thrusting event with slip partitioned on multiple faults, Acta Geologica Sinica (English Edition), 82, 12, pp. 1707-1722, (2008); 
Quaternary Sciences, (2008); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Xu, Zhiqin Qin, Uplift of the Longmen-Jinping orogenic belt along the eastern margin of the Qinghai-Tibet Plateau: Large-scale detachment faulting and extrusion mechanism, Geological Bulletin of China, 26, 10, pp. 1262-1276, (2007); 
Xu, Zhiqin Qin, Uplift of the Longmen Shan range and the Wenchuan earthquake, Episodes, 31, 3, pp. 291-301, (2008); 
Petroleum Geology Experiment, (2003)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, X., Wang, L., Zhang, X.-H., Ding, X., Qiu, H., Dong, Y., Dou, A., Zhang, F.-Y., Liu, Z.-T.
AUTHOR FULL NAMES: Wang, Xiaoqing (35148757500); Wang, Long (7409124261); Zhang, Xihai (16641614500); Ding, Xiang (16635732900); Qiu, Hu (7201608796); Dong, Yanfang (8213169000); Dou, Aixia (55761756200); Zhang, Feiyu Yun (55495348700); Liu, Zaitao (7406674231)
35148757500; 7409124261; 16641614500; 16635732900; 7201608796; 8213169000; 55761756200; 55495348700; 7406674231
Primary quantitative study on earthquake damage extracted from remote sensing imagery - A case study of doujiangyan due to the Wenchuan M8. 0 earthquake
(2009) Earthquake, 29 (1), pp. 174 - 181, Cited 22 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649204456&partnerID=40&md5=00272230679caa7a394c929add142c97

AFFILIATIONS: Institute of Earthquake Science, China Earthquake Administration, Beijing, China; Seismological Bureau of Jiangsu Province, Nanjing, Jiangsu, China; Seismological Bureau of Tianjin, Tianjin, China; China Earthquake Networks Center, Beijing, China
ABSTRACT: The fast developing remote sensing techniques play more and more important roles in earthquake emergency, disaster survey and losses estimation. Because of the lack of quantitative study on seismic damage based on remote sensing, the practicality of re-mote sensing in the seismic disaster management was usually questioned. The paper intro-duces the idea of essential quantitative study, the concept of remote sensing seismic damage index and analysis models, which are applied to the case of Doujiangyan City, Sichuan Province , destroyed by the 12 may 2008 Wenchuan M8. 0 earthquake. The primary re-sults show that there exists an obvious relation between the seismic damage index of build-ings obtained from the high resolution satellite or aerial remote sensing imagery with the seismic damage index or the building collapse ratio obtained through ground survey, and that the quantitative study on seismic damage based on remote sensing will provide a effec-tive means and tool for the seismic damage survey and losses estimation.
AUTHOR KEYWORDS: Quantitative study; Remote sensing; Seismic damage index; Wenchuan earthquake
INDEX KEYWORDS: disaster; disaster management; earthquake damage; estimation method; imaging method; quantitative analysis; remote sensing; seismic hazard; Sichuan earthquake 2008; Asia; China; Dujiangyan; Eurasia; Far East; Sichuan
REFERENCES: undefined, (2009); 
undefined, (2009); 
undefined, (2009); 
undefined, (2009); 
undefined, (2009); 
undefined, (2009); 
undefined, (2009); 
Mitomi, Hajime, Determination of the areas with building damage due to the 1995 Kobe earthquake using airborne MSS images, International Geoscience and Remote Sensing Symposium (IGARSS), 5, pp. 2871-2873, (2002); 
Acrs 2003 Isrs, (2003); 
undefined, (2009)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wan, K.S., Ni, S., Zeng, X.F., Somerville, S.
AUTHOR FULL NAMES: Wan, Kesong (26025342200); Ni, Sidao (7101821530); Zeng, Xiangfang (8322123400); Somerville, Paul Graham (7006762270)
26025342200; 7101821530; 8322123400; 7006762270
Real-time seismology for the 05/12/2008 Wenchuan earthquake of China: A retrospective view
(2009) Science in China, Series D: Earth Sciences, 52 (2), pp. 155 - 165, Cited 6 times.
DOI: 10.1007/s11430-009-0007-1
https://www.scopus.com/inward/record.uri?eid=2-s2.0-59149092860&doi=10.1007%2Fs11430-009-0007-1&partnerID=40&md5=0cdd47a27784f7a8c81bd78270e4f03d

AFFILIATIONS: School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, China; United Research Services Corporation, Pasadena, CA, United States
ABSTRACT: The devastating 05/12/2008 Wenchuan earthquake (M<inf>w</inf>7.9) in Sichuan Province of China showed very few precursory phenomena and occurred on a fault system once assigned to be of moderate long term seismic risk. Given the existing coverage of seismograph stations in Sichuan Province, real-time seismology could have been effective in avoiding some earthquake damage and helping post-earthquake emergency response. In a retrospective view, we demonstrated that the epicenter can be located with 20 km accuracy using just two broadband stations with three-component, which takes only about 10 s after the onset of the earthquake. Initial magnitude is estimated to be M7 with the Tc measurement over first 4 seconds of P waves. Better magnitude estimate can be obtained within 2 min by modeling Pnl waves for stations about 500 km away where the S waveforms are clipped. The rupture area is well revealed by teleseismically-recorded >M5 early aftershocks within two hours after the mainshock. Within a few hours, teleseismic body waves were inverted to derive a more detailed rupture process and the finite fault model can be readily used to calculate ground motions, thus providing vital information for rescue efforts in the case where no real-time strong motion records are available. © Science in China Press and Springer-Verlag GmbH 2008.
AUTHOR KEYWORDS: Earthquake early warning; Rapid location; Real-time seismology; Strong ground motion
INDEX KEYWORDS: Earthquake effects; Earthquakes; Engineering geology; Geophysics; Risk perception; Technetium; Broadband stations; Earthquake damages; Earthquake early warning; Emergency response; Fault models; Fault systems; Ground motions; Long terms; Mainshock; P waves; Rapid location; Real-time seismology; Rupture areas; Rupture process; Seismic risks; Seismograph stations; Sichuan provinces; Strong ground motion; Strong motions; Teleseismic body waves; Three components; Wave forms; Wenchuan earthquakes; Seismology; aftershock; early warning system; earthquake damage; earthquake magnitude; earthquake rupture; ground motion; risk assessment; seismograph; seismology; Sichuan earthquake 2008; teleseismic wave; waveform analysis; Asia; China; Eurasia; Far East; Sichuan; Wenchuan
REFERENCES: Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Geller, Robert J., Earthquakes cannot be predicted, Science, 275, 5306, pp. 1616-1617, (1997); 
Wyss, Max, Cannot earthquakes be predicted?, Science, 278, 5337, pp. 487-490, (1997); 
Ellsworth, William L., Seismic evidence for an earthquake nucleation phase, Science, 268, 5212, pp. 851-855, (1995); 
Eberhart-Phillips, Donna M., The 2002 Denali fault earthquake, Alaska: A large magnitude, slip-partitioned event, Science, 300, 5622, pp. 1113-1118, (2003); 
Anderson, Greg, Fault Interactions and Large Complex Earthquakes in the Los Angeles Area, Science, 302, 5652, pp. 1946-1949, (2003); 
Kanamori, Hiroo M., Real-time seismology and earthquake damage mitigation, Annual Review of Earth and Planetary Sciences, 33, pp. 195-214, (2005); 
Espinosa-Aranda, J. Manuel, Mexico City seismic alert system, Seismological Research Letters, 66, 6, pp. 42-53, (1995); 
Kanamori, Hiroo M., Real-time seismology and earthquake hazard mitigation, Nature, 390, 6659, pp. 461-464, (1997); 
Wu, Yih-Min Min, A virtual subnetwork approach to earthquake early warning, Bulletin of the Seismological Society of America, 92, 5, pp. 2008-2018, (2002)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fu, B.-H., Shi, P.-L., Zhang, Z.
AUTHOR FULL NAMES: Fu, Bihong (7103382662); Shi, Pilong (26421447200); Zhang, Zhiwu (57196189100)
7103382662; 26421447200; 57196189100
Spatial characteristics of the surface rupture produced by the M s8. 0 wenchuan earthquake using high-resolution remote sensing imagery
(2008) Acta Geologica Sinica (English Edition), 82 (12), pp. 1679 - 1687, Cited 61 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-62749144493&partnerID=40&md5=bd388d630969a6a1a45c7ee266eeb35c

AFFILIATIONS: Institute of Geology and Geophysics Chinese Academy of Sciences, Beijing, China
ABSTRACT: The M<inf>s</inf>8. 0 Wenchuan earthquake of 12 May 2008 occurred along the Longmenshan fault zone in the western Sichuan Basin, resulting in inestimable casualties and property losses as well as continuous surface ruptures (seismic fault). Based on the detailed interpretation of co-seismic surface ruptures using the post-earthquake high-resolution remote sensing images, which were acquired by the remote sensing airplanes of the Chinese Academy of Sciences and Taiwan FORMOSAT-2 spaceborne sensors, combined with the post-earthquake field investigations, this study ascertains the spatial distribution of the surface ruptures produced by the M<inf>s</inf>8. 0 Wenchuan earthquake. The results indicate that the great M<inf>s</inf>8. 0 Wenchan earthquake produced a nearly 300 km-long surface rupture zone with a complicated geometry, and distributes discontinuously along the pre-existing NE-trending active faults. The deformation is characterized mainly by thrust compressing and dextral strike-slip component. The surface ruptures can be divided into 2 zones according to the location of active faults : one is the central surface rupture zone with a length of about 230 km, which distributes along the Yingxiu-Beichuan fault, stretching from southwest of Yingxiu Town of Wenchuan County to northeast of Shikan Town of Pingwu County, with a maximum vertical displacement up to about 6. 0 m and the right-lateral horizontal offset up to 5. 8 m; the other is the piedmont surface rupture zone with a length of about 70 km, which distributes along the Guanxian-Anxian fault, beginning from the Xiange town of Dujiangyan City, and terminating around the Suishui Town of Anxian County. The deformation is characterized by the thrust faulting with a maximum vertical displacement of 2. 5 m. In addition, the analysis of remote sensing image shows that most of the geological disasters such as landslide and collapse distribute along the hanging wall of above-mentioned earthquake fault zones. Therefore, special research should be given to geological hazard effect related to thrust-faulting.
AUTHOR KEYWORDS: Aerial remote sensing; Disaster effect; Earthquake fault; Ms 8. 0 Wenchuan earthquake; Thrust fault
INDEX KEYWORDS: active fault; aerial photography; earthquake damage; earthquake magnitude; earthquake rupture; fault displacement; fault zone; remote sensing; seismic hazard; Sichuan earthquake 2008; strike-slip fault; thrust fault; Asia; China; Eurasia; Far East; Longmenshan Fault Zone; Sichuan
REFERENCES: undefined; 
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DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, Z., Li, H., Wu, Z.
AUTHOR FULL NAMES: Xu, Zhiqin Qin (35335582300); Li, Haibing (35243031900); Wu, Zhongliang (9536539700)
35335582300; 35243031900; 9536539700
Wenchuan earthquake and scientific drilling
(2008) Acta Geologica Sinica (English Edition), 82 (12), pp. 1613 - 1622, Cited 45 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-62749124841&partnerID=40&md5=638b3e7ae91ebe2f8d642988b3fbc0de

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Institute of Geophysics, China Earthquake Administration, Beijing, China
ABSTRACT: On 12 May 2008, a destructive earthquake of magnitude Ms=8. 0 struck the Longmen Shan region, Sichuan province, China. This earthquake caused huge losses of people's lives and property. During the special period after the Wenchuan earthquake and the aftershock is still ongoing, rapid scientific drilling on the Wenchuan Earthquake Fault Zone (WFSD) would provide critical data to constrain the mechanism for the Wenchuan earthquake, and improve our capability to forecast and mitigate the loss of future great earthquakes.The opening ceremony of the Wenchuan Earthquake Fault Zone Scientific Drilling (WFSD) was hold on 6 November, 2008 at Hongkou, Dujiangyan, Sichuan province. This heralds a new stage of earthquake research. Through direct sampling on the seismic fault zone, multi-disciplinary borehole observations and tests, critical information with respect to the composition, texture and structure of the seismic fault zone at depth, physical and chemical properties of fault zone materials can be acquired. Such a rich data set is essential for us to better understand the energy budget and rupture process of large destructive earthquakes. This improving understanding on the physical and chemical behavior of a seismic fault zone would provide key information for us to upgrade our capability of forcasting, predicting and early warning of future large earthquakes.
AUTHOR KEYWORDS: Earthquake mechanism; Scientific drilling; Wenchuan earthquake
INDEX KEYWORDS: aftershock; borehole; drilling; early warning system; earthquake damage; earthquake magnitude; earthquake prediction; earthquake rupture; energy budget; fault zone; Sichuan earthquake 2008; Asia; China; Eurasia; Far East; Longmenshan Fault Zone; Sichuan
REFERENCES: undefined; 
undefined; 
undefined; 
undefined; 
undefined; 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008); 
Chen, Shefa, Emplacement of the Longmen Shan Thrust-Nappe Belt along the eastern margin of the Tibetan Plateau, Journal of Structural Geology, 18, 4, pp. 413-430, (1996); 
Chen, Zhiliang, Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental deformation, Journal of Geophysical Research: Solid Earth, 105, B7, pp. 16215-16227, (2000); 
Fukuchi, Tatsuro, ESR detection of seismic frictional heating events in the Nojima fault drill core samples, Japan, Tectonophysics, 443, 3-4, pp. 127-138, (2007); 
Hashimoto, Yoshitaka, Characteristics and implication of clay minerals in the northern and southern parts of the Chelung-pu fault, Taiwan, Tectonophysics, 443, 3-4, pp. 233-242, (2007)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Fang, J., Li, Q., Liu, X., Li, Z., Tong, Q.
AUTHOR FULL NAMES: Fang, Junyong (7402966108); Li, Qingting (15846432500); Liu, Xue (36844130600); Li, Ziwei (36604762200); Tong, Qingxi (7102360135)
7402966108; 15846432500; 36844130600; 36604762200; 7102360135
Applications of Multi-mode Airborne Digital Camera system in Wenchuan earthquake and Qingdao algae disaster monitoring
(2008), 1, pp. 128 - 135, Cited 2 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865662917&partnerID=40&md5=a50ad416f9a2dd9bff1ce84daf09812b

AFFILIATIONS: Institute of Remote Sensing Application Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Remote sensing is the quicker responding technique when natural hazards were happened. The timely airborne images are the most important information for the headquarters to planning the succor mission. Multi-mode Airborne Digital Camera (MADC) system is a novel airborne digital camera developed by Institute of Remote Sensing Applications of Chinese Academy of Sciences. This system could acquire high quality images through three modes of wide field, multi-spectral (hyper-spectral) and stereo conformation. The basic components and its technical parameters of MADC are proposed in this paper. The applications of MADC were expanded in Wenchuan earthquake and Qingdao algae bloom. Some analytical methods and information extraction technologies are proposed, and some typical analysis and imaging results are given too. Some suggestions for the design and configuration of MADC are discussed at the end of this paper. When natural hazard is happened, the responsibility of the remote sensing staff is to capture and interpret the images of the disaster area, and to report the results to the headquarters for planning the succor mission. All the works should be done quickly and efficiently because of the disaster's devastation and suddenness. For the fast response, there are three requirements for aerial remote sensing. Firstly, the time to prepare the airborne devices should be shorter and shorter. And the suitable devices and flight platform should be selected according to the different disaster and location. Secondly, the staff and the devices should reach the disaster area as soon as possible by plane or train or other vehicles. Finally, the processes of image processing and information extraction should be simplified with an acceptable precision. MADC system is a novel airborne digital camera, which could acquire high quality images through three modes of wide field, multi-spectral (hyper-spectral) and stereo conformation. MADC played a very important role in the disaster monitoring of Wenchuan earthquake and Qingdao algae. Especially, the distribution map of dammed lakes in Jianjiang River was provided to the front line headquarters, and the dynamic changes of algae distribution was monitored in the Qingdao's Olympic sailing venue.
AUTHOR KEYWORDS: Airborne remote sensing; Dammed lake; Disaster monitoring; Qingdao algae; Sailing competition; Wenchuan earthquake
INDEX KEYWORDS: Airborne devices; Airborne images; Airborne remote sensing; Algae blooms; Analytical method; Chinese Academy of Sciences; Digital camera system; Disaster areas; Disaster monitoring; Dynamic changes; Fast response; Flight platforms; High quality images; HyperSpectral; Information Extraction; Information extraction technology; Multi-spectral; Multimodes; Natural hazard; Olympics; Qingdao; Remote sensing applications; Wenchuan Earthquake; Wide field; Algae; Digital cameras; Earthquakes; Hazards; Image processing; Information retrieval; Lakes; Video cameras; Remote sensing
REFERENCES: Journal of Remote Sensing, (2003); 
Remote Sensing of the Environment 15th National Symposium on Remote Sensing of China Proceedings of SPIE, (2005); 
Wei, Zheng, Application of POS in correcting images of aero-digital camera with large format array CCD, Proceedings of SPIE - The International Society for Optical Engineering, 6200, (2006)
CONFERENCE NAME: 29th Asian Conference on Remote Sensing 2008, ACRS 2008
CONFERENCE DATE: 2008-11-10 through 2008-11-14
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Bingyang, Y., Fei, W.
AUTHOR FULL NAMES: Bingyang, Yu (55349577300); Fei, Wu (55349058100)
55349577300; 55349058100
Eco-environmental problems research and eco-environmental status change evaluation of earthquake area using Beijing-1 small satellite images
(2008), 3, pp. 1397 - 1403, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865640421&partnerID=40&md5=21feb79f5fb3acd17db45d712a30d88e

AFFILIATIONS: Department of Data Disposing, Guojiao Spatial Information Technology (Beijing) Co., Ltd., Beijing, China
ABSTRACT: There was a serious earthquake at Wenchuan County in Sichuan province on 12 May 2008. It brought fatal casualty, and the eco-environment was affected acutely either. The fore-and-aft earthquake land use/cover types of research area were classified using Beijing-1 small satellite multiple spectrum images. Based on the land use/cover change, the eco-environmental problems were studied, including biotope change, vegetation cover change, hydro-ecology change and land degradation. Then the eco-environmental status change was evaluated. The conclusion is that Wenchuan earthquake affected the land use/cover and eco-environment of the research area acutely, and the eco-environmental status change is observably.
AUTHOR KEYWORDS: BJ-1; Earthquake; Eco-environment
INDEX KEYWORDS: Beijing-1; BJ-1; Eco-environments; Hydro-ecology; Land degradation; Land use/cover; Land use/cover change; Multiple spectra; Sichuan province; Small-satellite; Vegetation cover; Wenchuan Earthquake; Remote sensing; Research; Earthquakes
REFERENCES: Mingdao Journal, (2007); 
Biodiversity Science, (2012); 
undefined, (2012)
CONFERENCE NAME: 29th Asian Conference on Remote Sensing 2008, ACRS 2008
CONFERENCE DATE: 2008-11-10 through 2008-11-14
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, Z.-C., Li, G.-Q.
AUTHOR FULL NAMES: Huang, Zhenchun (8349208000); Li, Guoqing (56199992700)
8349208000; 56199992700
Building data grid for spatial information applications by meta-data adapters
(2008), 3, art. no. 4722280, pp. 18 - 21, Cited 5 times.
DOI: 10.1109/CSSE.2008.282
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551653067&doi=10.1109%2FCSSE.2008.282&partnerID=40&md5=4190f4ded7810e05f71c85926bd033ea

AFFILIATIONS: Department of Computer Science and Engineering, Tsinghua University, Beijing, China; Center of Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Data grid is powerful for distributed data sharing and collaborating, which is very important for the spatial information applications. But the difference among meta-data produced by space agencies around the world makes it difficult to re-organize data and share them. In this paper, a way named meta-data adapter is proposed, which can interpreter original meta-data with different syntax and semantic rules to required meta-data so that they can be organized as a distributed, heterogeneous, synergic, uniform interfaced, and inherent features based virtual remote sensing data catalog. Based on the meta-data adapter, SIG can build up a powerful and flexible data grid for spatial information applications. The experience of "remote sensing data distribution system for WenChuan earthquake rescuing" amazingly quick founding shows that meta-data adapter is a powerful and economical way to solve the problem of meta-data difference in data grid for spatial information applications. And it may be more powerful and extensible with the help of situation-based intelligent automatic adapter generating. © 2008 IEEE.
AUTHOR KEYWORDS: Data grid; Meta-data adapter; Remote sensing data distribution; Spatial information grid
INDEX KEYWORDS: Data Grid; Distributed data; Meta-data adapter; Remote sensing data; Remote sensing data distribution; Semantic rules; Space agency; Spatial information grid; Spatial informations; Wenchuan Earthquake; Remote sensing; Semantics; Software engineering; Space optics; Spatial distribution
REFERENCES: Foster, Ian T., Globus toolkit version 4: Software for service-oriented systems, Journal of Computer Science and Technology, 21, 4, pp. 513-520, (2006); 
Antonioletti, Mario A., The design and implementation of grid database services in OGSA-DAI, Concurrency and Computation: Practice and Experience, 17, 2-4, pp. 357-376, (2005); 
undefined, (2011); 
undefined, (2011); 
Xiao, Nong, GridDaen: A data grid engine, Lecture Notes in Computer Science, 3032, pp. 519-528, (2004); 
Liu, Dingsheng, A general model of data service in spatial information grid, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1370-1373, (2007); 
undefined, (2011); 
undefined, (2011); 
Raskin, Robert G., Knowledge representation in the semantic web for Earth and environmental terminology (SWEET), Computers and Geosciences, 31, 9, pp. 1119-1125, (2005); 
Huang, Zhenchun, SIG-DDS: A grid-based remote sensing data distribution system, (2006)
CONFERENCE NAME: International Conference on Computer Science and Software Engineering, CSSE 2008
CONFERENCE DATE: 2008-12-12 through 2008-12-14
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Zhen-Chun, H., Guo-Qing, L.
AUTHOR FULL NAMES: Zhen-Chun, Huang (27068080300); Guo-Qing, Li (57509506300)
27068080300; 57509506300
Meta-data adapter: A way to enable spatial information data grid
(2008), 5, art. no. 4813638, pp. 87 - 92, Cited 0 times.
DOI: 10.1109/FGCNS.2008.154
https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650214898&doi=10.1109%2FFGCNS.2008.154&partnerID=40&md5=eb6899ec3c8223c47a83f306ab6ac649

AFFILIATIONS: Department of Computer Science and Engineering, Tsinghua University, Beijing, China; Center of Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: Spatial information data grid is powerful for distributed data sharing and collaborating. But the difference among meta-data produced by space agencies around the world makes it difficult to re-organize data and share them when enabling spatial information data grid. In this paper, a way named meta-data adapter is proposed, which can interpreter original meta-data with different syntax and semantic rules to required meta-data so that they can be organized as a distributed, heterogeneous, synergic, uniform interfaced, and inherent features based virtual remote sensing data catalog. Based on the meta-data adapter, spatial information data grid can be enabled. The experience of "remote sensing data distribution system for WenChuan earthquake rescuing" amazingly quick founding shows that meta-data adapter is a powerful and economical way to solve the problem of meta-data difference and enable spatial information grid. © 2008 IEEE.
AUTHOR KEYWORDS: Data grid; Meta-data adapter; Remote sensing data distribution; Spatial information grid
INDEX KEYWORDS: Data grid; Distributed data; Meta-data adapter; Remote sensing data; Remote sensing data distribution; Semantic rules; Space agency; Spatial information grid; Spatial informations; Wenchuan Earthquake; Large scale systems; Remote sensing; Space optics; Image registration
REFERENCES: Foster, Ian T., Globus toolkit version 4: Software for service-oriented systems, Journal of Computer Science and Technology, 21, 4, pp. 513-520, (2006); 
Antonioletti, Mario A., The design and implementation of grid database services in OGSA-DAI, Concurrency and Computation: Practice and Experience, 17, 2-4, pp. 357-376, (2005); 
Proc Cascon 98 Conference, (1998); 
Proceedings of the Fifth Australasian Symposium on Acsw Frontiers, (2025); 
Xiao, Nong, GridDaen: A data grid engine, Lecture Notes in Computer Science, 3032, pp. 519-528, (2004); 
Liu, Dingsheng, A general model of data service in spatial information grid, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1370-1373, (2007); 
Proceedings of the 17th International Conference Informatics for Environmental Protection Enviroinfo, (2025); 
undefined, (2012); 
Raskin, Robert G., Knowledge representation in the semantic web for Earth and environmental terminology (SWEET), Computers and Geosciences, 31, 9, pp. 1119-1125, (2005); 
Huang, Zhenchun, SIG-DDS: A grid-based remote sensing data distribution system, (2006)
CONFERENCE NAME: 2008 2nd International Conference on Future Generation Communication and Networking Symposia, FGCN 2008
CONFERENCE DATE: 2008-12-13 through 2008-12-15
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, Z.-C., Li, G.-Q.
AUTHOR FULL NAMES: Huang, Zhenchun (8349208000); Li, Guoqing (56199992700)
8349208000; 56199992700
Metadata adapters for spatial information data grid
(2008), art. no. 4725987, pp. 517 - 518, Cited 0 times.
DOI: 10.1109/SKG.2008.19
https://www.scopus.com/inward/record.uri?eid=2-s2.0-60749092585&doi=10.1109%2FSKG.2008.19&partnerID=40&md5=887adc9de246216a26ea5ff6bb7346f6

AFFILIATIONS: Department of Computer Science and Engineering, Tsinghua University, Beijing, China; Center of Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: In spatial information data grid, the difference among metadata makes it difficult to re-organize data and share them. In this paper, a way named metadata adapter is proposed, to interpreter original metadata with different syntax and semantic rules to required metadata so that they can be organized as a distributed, heterogeneous, inherent features based, and one-stop served virtual remote sensing data catalogue. Based on the metadata adapter, SIG can build up a powerful and flexible data grid for spatial information applications. The experience of "remote sensing data distribution system for WenChuan earthquake rescuing" amazingly quick founding shows that metadata adapter is a powerful and economical way to solve the problem of metadata difference in spatial information data grid. © 2008 IEEE.
INDEX KEYWORDS: Data grids; One stops; Remote sensing datum; Semantic rules; Spatial informations; Wenchuan earthquakes; Image registration; Information theory; Large scale systems; Remote sensing; Semantics; Metadata
REFERENCES: Foster, Ian T., Globus toolkit version 4: Software for service-oriented systems, Journal of Computer Science and Technology, 21, 4, pp. 513-520, (2006); 
Antonioletti, Mario A., The design and implementation of grid database services in OGSA-DAI, Concurrency and Computation: Practice and Experience, 17, 2-4, pp. 357-376, (2005); 
Proc Cascon 98 Conference, (1998); 
Proceedings of the Fifth Australasian Symposium on Acsw Frontiers, (2025); 
Liu, Dingsheng, A general model of data service in spatial information grid, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1370-1373, (2007); 
Raskin, Robert G., Knowledge representation in the semantic web for Earth and environmental terminology (SWEET), Computers and Geosciences, 31, 9, pp. 1119-1125, (2005); 
Huang, Zhenchun, SIG-DDS: A grid-based remote sensing data distribution system, (2006)
CONFERENCE NAME: 4th International Conference on Semantics, Knowledge, and Grid, SKG 2008
CONFERENCE DATE: 2008-12-03 through 2008-12-05
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Yan, Y., Deng, Z.-H., Chen, M.-H., Zu, J.-H., Tao, J.-L.
AUTHOR FULL NAMES: Yan, Yan (36986433600); Deng, Zhihui (55229738400); Chen, Meihua (55836853500); Zu, Jinhua (24781397800); Tao, Jingling (7202301185)
36986433600; 55229738400; 55836853500; 24781397800; 7202301185
Retrieving the latent heat flux of Wenchuan area of Sichuan province using a dualtemperature-difference method
(2008) Dizhen Dizhi, 30 (4), pp. 1085 - 1094, Cited 7 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-60649098625&partnerID=40&md5=81237dcf5df0270f787ccecdf28c3a78

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: Research shows that anomalous increase of latent heat flux was discovered before several earthquakes. Basing on the Modis data, high-spectral data and ground meteorological data of the working area, we retrieved the sensible heat flux and calculated the latent heat flux from surface energy balance equation using a simplified two-layer model(dualtemperature-difference method). In this paper, we also discussed the characteristics of this model, and retrieved the latent heat flux of the area where the Longmenshan Fault goes through. Finally, we found that there were significantly high values of latent heat flux in the epicenter area of the M<inf>s</inf> 8.0 Wenchuan earthquake and the surrounding area of Longmenshan Fault 48 hours before the earthquake, the latent heat flux on May 12 reached the maximum of 300 ∼ 400W/m2 which might be the anomalous increase of latent heat flux before the M<inf>s</inf> 8.0 Wenchuan earthquake.
AUTHOR KEYWORDS: Earthquake; Latent heat flux; Remote sensing; Sensible heat flux
INDEX KEYWORDS: earthquake epicenter; earthquake event; earthquake magnitude; fault zone; latent heat flux; modeling; remote sensing; sensible heat flux; temperature; Asia; China; Eurasia; Far East; Sichuan; Wenchuan
REFERENCES: Chin Sci Bull, (2006); 
Arid Zone Research, (2007); 
Arid Land Geography, (2005); 
Mao, Kebiao, The research of split-window algorithm on the MODIS, Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University, 30, 8, pp. 703-707, (2005); 
undefined, (2009); 
Remote Sensing Information, (2006); 
Principle and Method of the Application and Analysis of Remote Sensing M, (2005); 
undefined, (2009); 
China Forestry Science and Technology, (2008); 
Anderson, Martha C., A two-source time-integrated model for estimating surface fluxes using thermal infrared remote sensing, Remote Sensing of Environment, 60, 2, pp. 195-216, (1997)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, X., Guan, Z., Shen, T.
AUTHOR FULL NAMES: Li, Xi (55718109900); Guan, Zequn (55577070300); Shen, Tiyan (18233785000)
55718109900; 55577070300; 18233785000
Discovering the driving factors of landslides of the Wenchuan earthquake using remote sensing and GIS
(2008) Proceedings of SPIE - The International Society for Optical Engineering, 7285, art. no. 728546, Cited 0 times.
DOI: 10.1117/12.815600
https://www.scopus.com/inward/record.uri?eid=2-s2.0-60649087016&doi=10.1117%2F12.815600&partnerID=40&md5=de6bf99155421176a415198b1b711e5e

AFFILIATIONS: School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, Hubei, China; School of Government, Peking University, Beijing, China
ABSTRACT: On May 12 in 2008, a Magnitude 8.0 earthquake hit Wenchuan in China, and the casualty shocked the whole world. The landslide was a frequent secondary disaster in this earthquake, so to analyze the mechanism of landslides in the disaster area is very important for post-earthquake reconstruction. The study area is located in PingWu County, which was also hit by the earthquake severely. And the data sources are ETM+ image, DEM and interpreted ALOS image. This paper considered four potential driving factors for landslides, and they are land cover, lineament, slope and drainage. The land cover was classified based on the density of vegetation, and sub-pixel analysis was employed; Density of lineament was calculated by Sobel operator and image segmentation; Slope was classified by using a threshold; Drainage was considered without numerical analysis, because it is significant and simple in study area. To find out how they influenced the landslides, conditional probability was utilized as a measurement. The result shows that areas in sparse vegetation, dense lineament and steep topography were easy to meet landslides, while drainages also induced landslides. © 2008 SPIE.
AUTHOR KEYWORDS: Earthquake; Endmember; Landslide; Lineament; Remote sensing; Slope; Sub-pixel analysis; Wenchuan
INDEX KEYWORDS: Accidents; Earthquakes; Image coding; Landforms; Landslides; Observatories; Pixels; Remote sensing; Vegetation; Endmember; Lineament; Slope; Sub-pixel analysis; Wenchuan; Data processing
REFERENCES: Chandler, Adrian M., Review of modern concepts in the engineering interpretation of earthquakes response spectra, Proceedings of the Institution of Civil Engineers: Structures and Buildings, 146, 1, pp. 75-84, (2001); 
Choudhury, Swapnamita, Remote sensing observations of pre-earthquake thermal anomalies in Iran, International Journal of Remote Sensing, 27, 20, pp. 4381-4396, (2006); 
Hoechner, Andreas, Enhanced GPS inversion technique applied to the 2004 Sumatra earthquake and tsunami, Geophysical Research Letters, 35, 8, (2008); 
Rathje, Ellen M., The role of remote sensing in earthquake science and engineering: Opportunities and challenges, Earthquake Spectra, 24, 2, pp. 471-492, (2008); 
Zhang, Lei, Determining fault slip distribution of the Chi-Chi Taiwan earthquake with GPS and InSAR data using triangular dislocation elements, Journal of Geodynamics, 45, 4-5, pp. 163-168, (2008); 
Zhao, Dapeng, New advances of seismic tomography and its applications to subduction zones and earthquake fault zones: A review, Island Arc, 10, 1, pp. 68-84, (2001); 
Geller, Robert J., Special section - Assessment of schemes for earthquake prediction Earthquake prediction: A critical review, Geophysical Journal International, 131, 3, pp. 425-450, (1997); 
Monecke, Katrin, Earthquake-induced deformation structures in lake deposits: A Late Pleistocene to Holocene paleoseismic record for Central Switzerland, Ecologae Geologicae Helvetiae, 99, 3, pp. 343-362, (2006); 
Lee, Chyityi Tyi, Statistical approach to earthquake-induced landslide susceptibility, Engineering Geology, 100, 1-2, pp. 43-58, (2008); 
Park, No-wook, Quantitative assessment of landslide susceptibility using high-resolution remote sensing data and a generalized additive model, International Journal of Remote Sensing, 29, 1, pp. 247-264, (2008)
CONFERENCE NAME: International Conference on Earth Observation Data Processing and Analysis, ICEODPA
CONFERENCE DATE: 2008-12-28 through 2008-12-30
DOCUMENT TYPE: Conference paper
PUBLICATION STAGE: Final

Huang, R.Q., Li, W.-L.
AUTHOR FULL NAMES: Huang, Runqiu (55835407700); Li, Weile (25936551300)
55835407700; 25936551300
Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May, 2008
(2008) Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 27 (12), pp. 2585 - 2592, Cited 319 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149232844&partnerID=40&md5=d077a1b21d292ce01353769dcc668847

AFFILIATIONS: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
ABSTRACT: As Wenchuan earthquake was of high magnitude and shallow seismic focus, it caused considerable damage and thousands of geohazards. After a field investigation and the interpretation of remote-sensing images and aerial photographs taken after the earthquake, 11308 earthquake-induced geohazards have been obtained; and the general distribution situation of the geohazards has been learnt. Then, the distribution of these geohazards was investigated statistically using GIS techniques to determine how the occurrence of geohazards correlates with distance from the coseismic fault, slope steepness, elevation and rock type. The main results of this research can be summarized as follows. (1) The geohazards triggered by earthquake show the feature of zonal distribution along the coseismic fault and linear distribution along the rivers. (2) The distribution of earthquake-induced geohazards has marked hangingwall effect, for the geohazard concentration in the hangingwall of coseismic fault is obviously higher than that in the footwall and the width of strong development zone in the hangingwall is about 10 km. (3) The slope steepness is a main factor which controls the development of earthquake-induced geohazards and a vast majority of geohazards are distributed within the range of 20° to 50°. (4) The earthquake-induced geohazards have corresponding relationship with the elevation and micro-landform; for most hazards occur in river valley and canyon section below the elevation of 1500 to 2000 m, particularly in the upper segment of canyon section (namely, the turning point from the dale to the canyon). Thin ridge, isolated or full-face space mountains are most sensitive to the seismic wave, and have striking amplification effect. In these areas, collapses and landslides are most likely to occur. (5) The research also shows that different limologies have no marked corresponding relationship with the development of geohazards, but it determines the types of geohazards. Usually, landslides occur in soft rocks, while collapses occur in hard rocks.
AUTHOR KEYWORDS: Distribution rule; Earthquake-induced geohazards; Engineering geology; GIS analysis; Hangingwall effect; Wenchuan earthquake on 12th May, 2008
INDEX KEYWORDS: Amplification; Earthquakes; Engineering geology; Geographic information systems; Geology; Landforms; Landslides; Photography; Remote sensing; Seismic waves; Seismology; Aerial photographs; Amplification effects; Coseismic faults; Distribution rule; Face spaces; Field investigations; GIS analysis; Hangingwall effect; Hard rocks; Linear distributions; Main factors; River valleys; Rock types; Shallow seismic; Soft rocks; Turning points; Wenchuan earthquake on 12th May, 2008; Zonal distributions; Hazards
REFERENCES: Chinese Geological Education, (2008); 
Seismology and Geology, (2008); 
Parsons, Tom, Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin, Nature, 454, 7203, pp. 509-510, (2008); 
Catastrophic Landslides in China, (2008); 
Journal of Catastrophology, (2003); 
Landslide Dynamics, (1995); 
Journal of Xi an Engineering University, (1998); 
Bao, Yejing, Probabilistic analysis of earthquake-induced landslides, Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 24, 1, pp. 66-70, (2005); 
Keefer, David K., Statiscal analysis of an earthquake-induced landslide distribution - The 1989 Loma Prieta, California event, Engineering Geology, 58, 3-4, pp. 231-249, (2000); 
Jibson, Randall W., A method for producing digital probabilistic seismic landslide hazard maps, Engineering Geology, 58, 3-4, pp. 271-289, (2000)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wu, S.-R., Shi, J.-S., Yao, X., Wang, T., Wang, H.-B.
AUTHOR FULL NAMES: Wu, Shuren (15744734100); Shi, Jusong (7404495701); Yao, Xin (55723721600); Wang, Tao (56454532900); Wang, Huabin (57191848944)
15744734100; 7404495701; 55723721600; 56454532900; 57191848944
Analysis and evaluation of geohazard intensity of the Wenchuan earthquake, Sichuan, China
(2008) Geological Bulletin of China, 27 (11), pp. 1900 - 1906, Cited 22 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879711384&partnerID=40&md5=8ca70365ae90744512ed71523a5ea40b

AFFILIATIONS: Key Laboratory of Neotectonic Movement and Geohazard, Chinese Academy of Geological Sciences, Beijing, China; Huazhong University of Science and Technology, Wuhan, Hubei, China
ABSTRACT: In order to study the evaluation method and index system of regional group-occurring geohazard activities, take for example the evaluation of the intensity of geohazard activity induced by the Wenchuan earthquake, the authors calculated the maximum surface density of distribution of geohazards induced by the Wenchuan earthquake on the basis of a simple analysis of the macroscopic features of geohazards induced by the earthquake and by using high-precision remote sensing interpretation data and GIS data. In addition, in combination with the recent analysis of historic data got by geohazard survey of Baoji City, Shaanxi, the authors proposed the basic idea of taking the maximum surface density of geohazard distribution as the indices of the intensity of regional geohazard activity and classification standard. Eight classes of the indices of the intensity of geohazard activity were preliminarily established, of which the highest intensity of geohazard activity induced by the Wenchuan earthquake is class 7, belonging to extremely strong activity. The area with the strongest geohazard activity (class 7 activity area) is located on both sides of the causative earthquake on both banks of the Minjiang River near Yingxiu Township and in the upper reaches of the Yinchang Gully, Hanwang Township, Mianzhu in the epicenter area of the strong earthquake. The area with the less strong geohazard activity (class 6 activity area) is situated on both bank of the Qianhe River in the seat of Beichuan County and on both banks of a small river northeast of Nanba Township, Pingwu County. It is revealed that the activity intensity of geohazards had a trend of significant decline from the causative fault zone toward both sides. Finally, the paper briefly discusses the main cause for so strong geohazard activities deduced by the Wenchuan earthquake and their development trend.
AUTHOR KEYWORDS: Geohazard index; Intensity of geohazard activity; Maximum surface density; Seismic geohazard; Wenchuan earthquake
REFERENCES: Landslide Risk Assessment, (1997); 
Cardinali, Mauro, A geomorphological approach to the estimation of landslide hazards and risks in Umbria, Central Italy, Natural Hazards and Earth System Sciences, 2, 1-2, pp. 57-72, (2002); 
undefined, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Shi, J.-S., Shi, L., Wu, S.-R.
AUTHOR FULL NAMES: Shi, Jusong (7404495701); Shi, Ling (36985808900); Wu, Shuren (15744734100)
7404495701; 36985808900; 15744734100
Techniques and procedures of applications of the GIS technique in landslide map making
(2008) Geological Bulletin of China, 27 (11), pp. 1810 - 1821, Cited 4 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877067844&partnerID=40&md5=ef17c84e3e2234b3e22b6805f36a8cb3

AFFILIATIONS: Key Laboratory of Neotectonic Movement and Geohazard, Chinese Academy of Geological Sciences, Beijing, China
ABSTRACT: In order to popularize the application of the GIS technique in the present geohazard investigation and assessments, the ArcGIS is used to achieve rapid, urgent map making in the subject "Technical Research in Geohazard Risk Assessments" of the Science and Technology Support Plan of the eleventh Five-Year Plan and the assessments of the bearing capacity of resource and environment for post-hazard reconstruction program in worst-hit areas of the Wenchuan earthquake. The basic types of landslide risk maps include the landslide documentation map, landslide vulnerability zoning map, landslide danger zoning map and landslide risk zoning map. Based on a description of these map types, the focus is put on the method of modeling by using the ArcGIS software and its space data in order to achieve basic information acquisition and processing in the landslide risk map making and use the spatial data modeling tool to carry out rapid landslide map making.
AUTHOR KEYWORDS: GIS; Landslide mapping; Spatial data modeling (SDM)
REFERENCES: Chacón, José, Engineering geology maps: Landslides and geographical information systems, Bulletin of Engineering Geology and the Environment, 65, 4, pp. 341-411, (2006); 
Van Westen, Cees J., Digital geomorphological landslide hazard mapping of the Alpago area, Italy, International Journal of Applied Earth Observation and Geoinformation, 2000, 1, pp. 51-60, (2000); 
Bull Eng Geol Env, (2005); 
Landslide Risk Management, (2005); 
Landslide Risk Management, (2005); 
Mansourian, Ali, Using SDI and web-based system to facilitate disaster management, Computers and Geosciences, 32, 3, pp. 303-315, (2006); 
Metternicht, Graciela I., Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, 98, 2-3, pp. 284-303, (2005); 
Arcsdm3 1 Arcmap Extension for Spatial Data Modeling Using Weights of Evidence Logistic Regression Fuzzy Logic and Neural Network Analysis, (2004); 
Proceedings of the International Conference on Landslide Risk Management, (2005); 
Dai, Fuchu, Landslide characteristics and slope instability modeling using GIS, Lantau Island, Hong Kong, Geomorphology, 42, 3-4, pp. 213-228, (2002)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Liu, C.-Z.
AUTHOR FULL NAMES: Liu, Chuanzheng (15754083600)
15754083600
Disasters induced by the Wenchuan earthquakes, Sichuan, China, and geo-environmental safety
(2008) Geological Bulletin of China, 27 (11), pp. 1907 - 1912, Cited 15 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-77349111003&partnerID=40&md5=ce9e873791551f6dfc6b1f4d2440b690

AFFILIATIONS: China Institute of Geo-Environmental Monitoring, Beijing, Beijing, China
ABSTRACT: Based on the field investigation in emergency, interpretation of remote sensing images and historic geo-data, the author puts forward an over-all evaluation of geohazards induced by the Wenchuan earthquakes. Geohazard types in the earthquake area are distinguished and some typical examples are described. The relation between human safety and geo-environment is discussed on the basis of the basic characteristics of the Wenchuan earthquakes, combined with experience of the United States and Japan in earthquake disaster mitigation. The author believes that geological safety is the first factor for meeting human existence, and its work goal is to make scrutiny for acceptability of geo-environmental safety and geohazard risk. The tasks of geological work are to survey and evaluate the geo-environmental quality and capacity at different scales and in different function regions and judge geological risks affected by earthquakes, climate and human activities.
AUTHOR KEYWORDS: Geological environment; Geological safety; Risk of geohazards; Wenchuan earthquake
REFERENCES: undefined; 
undefined; 
undefined, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, Y.-J., Huang, J.-M.
AUTHOR FULL NAMES: Li, Yuanjian (57192529451); Huang, Jinmin (56135685600)
57192529451; 56135685600
Approach to improving the function of 120 command information system during the Wenchuan Earthquake
(2008) Chinese Journal of Emergency Medicine, 17 (9), pp. 907 - 910, Cited 0 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-52649099552&partnerID=40&md5=3db857c3be878b4858b64785126516ef

AFFILIATIONS: Chengdu Compulsory Detoxification Center, Chengdu, China
ABSTRACT: Objective: To explore the function of 120 command information systems for emergency medical rescue in the 5·12 Wenchuan Earthquake. Method: To analyze various functions of Chengdu 120 command center information systems during the disaster resulted from the catastrophic earthquakes. Results: As soon as 58 minutes after the Wenchuan earthquake with the magnitude of 8 (measured 8 on the Richter scale) happened at 14:28:04, calls flooded the Chengdu 120 center for help as many as 3-4 times the usual in a brief period. Immediately, the center opened 8 spare Alarm Reception stations, launching all sorts of function of both wire and wireless digital trucking systems, keeping track of database information, taking LED, road monitoring system, GIS, GPS for visual tracking and displaying vehicles and the messages about casualties. They received 6479 SOS calls and 14 749 calls within 58 hours. The first 58 hours after the earthquake happened, 120 center had dispatched ambulances 1184 time and sents 705 medical teams of more than 3000 medical staff for relief to hardest quake-hit region, which more than 6000 casualties were rescued and transported. The following 20 days, assigned 244 hospitals, 2526 rescuer vehicles at 5 airports, railway stations and Zipinpu Reservoir to pick up the injuries of 1518 persons and transfer 2151 persons to other province for medical treatment. Conclusions: The 120 communication modalities and command development should be diversified and the command information systems construction should meet both peacetime and wartime needs with gradual, scientifical, reasonable and flexible improvements. Provided that those improvements are well done, we shall ensure 120-lifeline going smoothly just in case the disasters occurs.
AUTHOR KEYWORDS: 120 Command Information Systems; Data analysis; Earthquake
REFERENCES: undefined, (2008); 
undefined, (2008); 
undefined, (2008); 
undefined, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Li, C.-X., An, Y.-F., Yu, G.-H., Xiwei, X., Chen, G.-H., Wang, S.-Y., Gong, H.-L., Yang, H., Guo, T.-T., Zhang, L.-F.
AUTHOR FULL NAMES: Li, Chenxia (7501680472); An, Yanfen (24586916600); Yu, Guihua (7403528699); Xiwei, Xu (8246843900); Chen, Guihua (55733464100); Wang, Shiyuan (26031132900); Gong, Huiling (56277006500); Yang, Hu (7406562454); Guo, Tingting (57194344419); Zhang, Lanfeng (8558415600)
7501680472; 24586916600; 7403528699; 8246843900; 55733464100; 26031132900; 56277006500; 7406562454; 57194344419; 8558415600
An introduction to the geodatabase of scientific investigation of the MS 8.0 Wenchuan earthquake
(2008) Dizhen Dizhi, 30 (3), pp. 804 - 810, Cited 1 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-60649089837&partnerID=40&md5=64e9e5a0ba386f6d23c69f72fc2acda9

AFFILIATIONS: Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China; Lanzhou Institute of Seismology, China Earthquake Administration, Beijing, China; Earthquake Administration of Sichuan Province, Chengdu, Sichuan, China
ABSTRACT: The geodatabase of scientific investigation of Wenchuan earthquake stores many field investigation data, such as the data of field geological survey sites, the surface rupture belts, the Quaternary faults in the earthquake region, paleoseismological trenches, folds, etc. Moreover,it includes some collection data, such as strata data, the catalog of the Wenchuan mainshock and aftershocks, the relocation catalog of aftershocks of the Wenchuan earthquake, the catalog of historical strong earthquake. The field data are recorded, edited, analysed, mapped and output with ArcGis, a powerful function in Gis software. The geodatabase of scientific investigation of M<inf>s</inf>8.0 Wenchuan earthquake was initially established, which includes the basic seismological information and realizes the integrated management of spatial location and attribute information. Data can be queried, analyzed and processed for the need of the correlation analysis of the data. Seismic tectonic map and surface rupture map can be drawn with the geodatabase, which can provide the basis for the determination of safety distance from the risky seismic rupture zones in post-disaster reconstruction and for the construction of the Wenchuan earthquake geographic information system.
AUTHOR KEYWORDS: Database; Earthquake scientific investigation; MS8.0 Wenchuan earthquake; Seismotectonic map; Surface rupture distribution
INDEX KEYWORDS: aftershock; database; earthquake catalogue; earthquake event; earthquake magnitude; earthquake rupture; GIS; seismotectonics
REFERENCES: Introduction to Geographic Information System M, (2000); 
Northwestern Seismological Journal, (2006); 
Continental Dynamics and Geological Responses of the Eastern Margin of Qinghai Tibet Plateau, (2006); 
undefined, (2009); 
Yang, Xiaoping, The evidence of the south Longmenshan fault zones cutting late Quaternary stratum, Dizhen Dizhi, 21, 4, pp. 341-345, (1999); 
Zhang, Lanfeng, Compiling the 1:250,000 regional seismotectonic map using the 1: 200, 000 geologic maps with ArcGIS method, Dizhen Dizhi, 29, 2, pp. 412-417, (2007); 
Zhang, Peizlien Zhen, Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China, Acta Geophysica Sinica, 51, 4, pp. 1066-1073, (2008); 
Seismology and Geology, (1994); 
Densmore, Alexander Logan, Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau, Tectonics, 26, 4, (2007); 
Burchfiel, B. Clark, A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today, 18, 7, pp. 4-11, (2008)
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, C.-M., Wang, G.-X.
AUTHOR FULL NAMES: Zhang, Chunmin (55703873500); Wang, Genxu Xuan (35201884700)
55703873500; 35201884700
Evaluation on the impacts of the Wenchuan Earthquake on ecological spatial pattern in landscape scale
(2008) Shengtai Xuebao, 28 (12), pp. 5938 - 5947, Cited 5 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149293577&partnerID=40&md5=9db300aa294bd6d94f47b37f83f49b11

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: This paper is based on two periods of landscape type maps derived from remote sensed data and basic data, according to the present and characteristics of the landscape ecosystems in regions before and after the 5.12 Wenchuan Earthquake. The paper analyzed the process of change in the landscape ecosystem and heterogeneity in landscape ecology with different earthquake intensity. In order to evaluate the extent of damaged landscape ecology, and by means of Analytical Hierarchy Process (AHP), a synthetically index system from two aspects of landscape-stability and heterogeneity was established. The main results are the following: (1) Large scale of woodland, farmland and grassland were damaged by the Wenchuan Earthquake; landslides and collapses took place, this caused a great number of bare land and bare rock that emerged after the disaster. The change area where earthquake of M ≥ 9 of woodland and farmland reduced by 458.48 km2 and 91.16 km2 respectively. The bare land area and bare rock region increased by 496.23 km2, and the range ability related to 947.51%. In the IX level region, relatively lighter influence acts on landscape change, and the variation ranges are all below 2%, the ecosystem is slightly damaged. On the contrary, in the tenth seismic intensity region, damages on the ecosystem are more obvious, and the bare land and bare rock in this region increased by 126.17km2, it is about 7 times contrast to previous status. However, in the eleventh seismic intensity region, where the centre of that hazard earthquake stay, it heavily damaged the ecosystem, and it manifested as obviously change of all vegetation types. The bare land area increased by 334.47km2, for instance, and that is 29.34 times to the earliest situation. All of woodland, grassland and farmland are likewise decreased by 308.04km2, 14.36km2. (2) On the analysis of landscape indexes which belong to beyond IX level region show that the ecosystem is originally fragile. The ecosystem's fragility is reflected by its diversity, homogeneity, fragmentation degree and dominance of local landscape ecosystem. But every target showed that the degeneration of environment and spatial heterogeneity, evidently, after quake. (3) Referring to Sturges' evaluation criterion, the landscape stability and the variability, integrated score of each landscape ecological damage region are 0.42, 0.66 and 0.80, separately; and the corresponding destruction can be defined as moderate damage, severe damage and awful damage. In another words, the integrated score of the eighth seismic intensity region should be below 0.4, and should belong to the slightly damaged level. Owning to the overall merit, after-disaster of the '5.12' Wenchuan Earthquake, reconstruction and reconstruction projects should focus mainly on the ninth and above seismic intensity regions.
AUTHOR KEYWORDS: Index system; Landscape ecology destroy; Landscape pattern; Wenchuan earthquake
INDEX KEYWORDS: earthquake damage; earthquake intensity; landscape change; landslide; remote sensing; Sichuan earthquake 2008
REFERENCES: Journal of Arid Land Resources and Environment, (1989); 
undefined, (2009); 
Recent Developments in World Seismology, (2007); 
Journal of Catastrophology, (1991); 
Journal of Cata Trophology, (2001); 
Cheng, Jack D., Hydrometeorological and landuse attributes of debris flows and debris floods during typhoon Toraji, July 29-30, 2001 in central Taiwan, Journal of Hydrology, 306, 1-4, pp. 161-173, (2005); 
Walsh, Stephen J., An overview of scale, pattern, process relationships in geomorphology: A remote sensing and GIS perspective, Geomorphology, 21, 3-4, pp. 183-205, (1998); 
Wang, Genxu Xuan, Several problems in ecological security assessment research, Chinese Journal of Applied Ecology, 14, 9, pp. 1551-1556, (2003); 
Resources Science, (2006); 
Chinese Journal of Eco Agriculture, (2006)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Wang, X.-Z., Xu, W.-H., Ouyang, Z.-Y., Zhang, J.-D.
AUTHOR FULL NAMES: Wang, Xuezhi (56512501900); Xu, Weihua (55487629900); Ouyang, Zhiyun (7006468812); Zhang, Jindong (12041725600)
56512501900; 55487629900; 7006468812; 12041725600
Impacts of Wenchuan Earthquake on giant panda habitat in Dujiangyan region
(2008) Shengtai Xuebao, 28 (12), pp. 5856 - 5861, Cited 20 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149239893&partnerID=40&md5=c0c7c39157a8554d4ade3dea2b2bb034

AFFILIATIONS: Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Mianyang Normal University, Mianyang, Sichuan, China
ABSTRACT: To understand the spatial pattern of hill slides created by Wenchuan Earthquake and its impacts on giant panda habitat, vegetation and panda habitat before and after the earthquake was analyzed based on remote sensing and GIS modeling in Dujiangyan region. Results showed that 12, 862hm2 of hill slides were created after this earthquake in this region, and 78.64% of these were in Longxihongkou nature reserve. Most of hill slides were distributed in mountains with the elevation between 1400-2400m above sea level and slope between 20-55°. About 21.63% of giant panda habitat was damaged by earthquake, which mainly occurred in elevation between 2200-3000m. The giant panda habitat was serious fragmented after earthquake, and the number of habitat patches was 7.7 times of that before earthquake. In Longxihongkou nature reserve, 32.15% of giant panda habitat was seriously damaged, while the damage of habitat outside reserve was moderate with the loss ratio of 9.83%. To conserve habitats for giant panda in this region, tourism inside the giant panda habitat should be forbidden in the process of restoration and re-construction.
AUTHOR KEYWORDS: Dujiangyan region; Giant panda; Habitat loss; Wenchuan Earthquake
INDEX KEYWORDS: carnivore; disturbance; earthquake damage; ecotourism; GIS; habitat fragmentation; habitat loss; habitat restoration; hillslope; mammal; reconstruction; sea level; Sichuan earthquake 2008; spatial analysis; Asia; China; Dujiangyan; Eurasia; Far East; Longxi-Hongkou Nature Reserve; Sichuan; Ailuropoda; Ailuropoda melanoleuca
REFERENCES: Wang, Dajun, Turning earthquake disaster into long-term benefits for the panda, Conservation Biology, 22, 5, pp. 1356-1360, (2008); 
Van Leeuwen, Willem Jan Dirk, Monitoring the effects of forest restoration treatments on post-fire vegetation recovery with MODIS multitemporal data, Sensors, 8, 3, pp. 2017-2042, (2008); 
3rd National Survey Report on Giant Panda in China, (2006); 
Acta Ecologica Sinica, (2001); 
Xu, Weihua, Designing a conservation plan for protecting the habitat for giant pandas in the Qionglai mountain range, China, Diversity and Distributions, 12, 5, pp. 610-619, (2006); 
Taylor, Alan Henry, Bamboo regeneration after flowering in the wolong giant panda reserve, China, Biological Conservation, 63, 3, pp. 231-234, (1993)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Zhang, C.-M., Wang, G.-X.
AUTHOR FULL NAMES: Zhang, Chunmin (55703873500); Wang, Genxu Xuan (35201884700)
55703873500; 35201884700
Impacts of Wenchuan Earthquake disasters on ecosystem and its spatial pattern: Case study of Qingchuan, Pingwu and Maoxian counties
(2008) Shengtai Xuebao, 28 (12), pp. 5833 - 5841, Cited 9 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149236706&partnerID=40&md5=de2a163485b3995258d3c7621ca83b69

AFFILIATIONS: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, China
ABSTRACT: Based on two periods of land cover maps derived from remotely sensed date, Landsat TM, CBERS and digital elevation model (DEM) derived from 1:250 000 topographic maps. Studies on land use/land cover changes (LUCC) of Qingchuan county, Pingwu County and Maoxian county before and after Wenchuan Earthquake, and the influences of two importance cause of slope and aspect in ecosystem. The main results are as follow: after earthquake, the area of woodland, grassland and farmland decreased obviously by 92.09km2, 46.98 km2 and 30.81 km2 respectively, open forest land increased by 98.81 km2 for area. The open forest land area changes amplitude is most, the value is 6.20%. Results indicated the ecosystem is degenerating and in study regions after earthquake, especially Qingchuan county. Topographic conditions are of great importance to the distribution of land use/land cover and the process of land cover changes. Under different slopes, there are large area changes of LUCC great than 35° because of earthquake. The order are 0-8deg;, 15-25°, 8-15° and 25-35°. These changes have obviously relation with earthquake and the secondary mountain disasters such as rock fall, landside, and debris flow. Aspect has a large influence on the distribution of land cover types, especially in half-shady slope; the order is half-sunny slope, shady slope and sunny slope. The area changes amplitude of land cover types are obviously in different aspect.
AUTHOR KEYWORDS: Ecosystem; LUCC; Wenchuan Earthquake
INDEX KEYWORDS: debris flow; digital elevation model; earthquake damage; ecosystem approach; land cover; land use change; Landsat; landslide; remote sensing; satellite data; Sichuan earthquake 2008; spatial analysis; topographic mapping; Asia; China; Eurasia; Far East; Sichuan
REFERENCES: Progress in Geography, (2003); 
Li, Xiubin, A review of the international researches on land use/land cover change, Dili Xuebao/Acta Geographica Sinica, 51, 6, pp. X9-557, (1996); 
Zhang, Xiaoming, Response of land use/coverage change to hydrological dynamics at watershed scale in the Loess Plateau of China, Acta Ecologica Sinica, 27, 2, pp. 414-421, (2007); 
Scientia Geographica Sinica, (2003); 
Acta Geographica Sinica, (2006); 
Progress in Geography, (2001); 
Wang, Genxu Xuan, Land ecological changes and evolutional patterns in the source regions of the Yangtze and Yellow Rivers in recent 15 years, Dili Xuebao/Acta Geographica Sinica, 59, 2, pp. 163-173, (2004); 
Advances in Environmental Science, (1999); 
Acta Ecologica Sinica, (2000); 
Fu, Bojie, The effect of land use Chang on the regional environment in the Yangjuangou catchment in the Loess Pplateau of China, Dili Xuebao/Acta Geographica Sinica, 54, 3, pp. 241-246, (1999)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Xu, X.-L., Jiang, D., Zhuang, D.-F., Qiu, D.-S.
AUTHOR FULL NAMES: Xu, Xinliang (55602417800); Jiang, Dong (35787361300); Zhuang, Dafang (7006581099); Qiu, Dongsheng (7102135502)
55602417800; 35787361300; 7006581099; 7102135502
Assessment about the impact of Wenchuan Earthquake on ecological environment
(2008) Shengtai Xuebao, 28 (12), pp. 5899 - 5908, Cited 14 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149234845&partnerID=40&md5=27623b8164eebe3a8e111930fcb861da

AFFILIATIONS: Natural Resources Research, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
ABSTRACT: The Wenchuan Earthquake on May 12th not only caused huge death, toll, injuries, and economic losses, but also affected local environment seriously. In this paper, using RS images and GIS, RS and integrated analysis technology, we analyzed the impacts of the devastating earthquake on vegetation, agricultural ecosystem, river, Wolong Natural Reserve, and the use of disinfector in 36 counties of the earthquake region. The results show that the lost land area from landslide or mudslides was about 190.86 km2, about 0.19% of total land area. The damaged forest and grassland area was about 164.96 km 2, about 0.22% of total forest and grassland area. The farmland area destroyed by landslide or mudslides was estimated to be about 57.77 km 2, about 0.29% of total farmland area. About 34 rivers were blocked in the earthquake region, which are primarily located in Pingwu, Beichuan, Jiangyou, Qingchuan and Moxian counties. The damaged land area in the Wolong Natural Reserve was about 1.44 km2, about 0.28% of damaged forest area, which poses serious threat to panda's life.
AUTHOR KEYWORDS: Assessment; Earthquake disaster; Ecological environment; Remote sensing
INDEX KEYWORDS: agricultural ecosystem; agricultural land; carnivore; earthquake damage; ecological impact; environmental impact assessment; GIS; grassland; landslide; mammal; nature reserve; remote sensing; satellite imagery; Sichuan earthquake 2008; Asia; China; Eurasia; Far East; Sichuan; Wolong Nature Reserve
REFERENCES: undefined; 
undefined, (2009); 
Northwestern Seismological Journal, (2007); 
undefined, (2009); 
Preliminary Analysis on the Relationship Between Earthquakes and Ecologie Environment, (2000); 
Journal of Cata Trophology, (2001); 
Chinese Journal of Geological Hazard and Control, (2002); 
Recent Developments in World Seismology, (2007); 
Li, Hongnan Nanb, Damage investigation and analysis of engineering structures in the Wenchuan earthquake, Jianzhu Jiegou Xuebao/Journal of Building Structures, 29, 4, pp. 10-19, (2008); 
Recent Developments in World Seismology, (2008)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Dong, R.-C., Liu, M., Xu, W.-H., Wang, X.-Z., Ouyang, Z.-Y.
AUTHOR FULL NAMES: Dong, Rencai (11940427600); Liu, Ming (57221054869); Xu, Weihua (55487629900); Wang, Xuezhi (56512501900); Ouyang, Zhiyun (7006468812)
11940427600; 57221054869; 55487629900; 56512501900; 7006468812
Technique of multi-source-data integration and fusion for urgent assessment of ecology and environment effect from Wenchuan Earthquake
(2008) Shengtai Xuebao, 28 (12), pp. 5795 - 5800, Cited 4 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149231168&partnerID=40&md5=075fb6f4d4e59eb210b0ecaa753372bd

AFFILIATIONS: Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Institute of Urban Environment, Chinese Academy of Sciences, Beijing, Beijing, China
ABSTRACT: The methodology and technique of spatial data processing were studied in the emergency assessment of Wenchuan Earthquake impacts on environment. The techniques of multi-source-data integration and fusion were used successfully to integrate data in different format which were collected from different sensors with different spatial, spectral and temporal resolution. The effective coverage of remote sensing image was expanded and the interpretation accuracy of information on disaster was improved. The primary assessment of earthquake disaster impacts on environment was finished quickly and comprehensively. The methodologies and techniques of using remote sensing technology were set up to monitor and evaluate heavy disaster impacts on environment. In order to strengthening the ability to cope with the future disaster, we suggest to emphasize the construction of environmental background database; strengthen and perfect the multi-sector data sharing mechanism and promote using the technique of multi-source-data integration and fusion in China.
AUTHOR KEYWORDS: Data integration; Data sharing; Earthquake disaster; Fusion; Remote sensing monitoring
INDEX KEYWORDS: data processing; database; earthquake damage; ecological approach; environmental impact assessment; environmental monitoring; remote sensing; risk assessment; sensor; Sichuan earthquake 2008; Asia; China; Eurasia; Far East; Sichuan; Wenchuan
REFERENCES: China Surveying and Mapping, (1996); 
Recent Developments in World Seismology, (2007); 
Spacecraft Engineering, (2007); 
Acta Geoscientia Sinica, (2003); 
Xu, Yang, Study of earthquake disaster reduction WebGIS system and spatial data sharing, Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology, 28, 10, pp. 104-113, (2006); 
Bingjing, (2005); 
Journal of Remote Sensing, (2005)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

Ouyang, Z.-Y., Xu, W.-H., Wang, X.-Z., Wang, W.-J., Dong, R.-C., Zheng, H., Li, D., Li, Z.-Q., Zhang, H.-F., Zhuang, C.-W.
AUTHOR FULL NAMES: Ouyang, Zhiyun (7006468812); Xu, Weihua (55487629900); Wang, Xuezhi (56512501900); Wang, Wenjie (56948645000); Dong, Rencai (11940427600); Zheng, Hua (8253975000); Li, Dihua (8895824200); Li, Zhiqi (56075165500); Zhang, Hongfeng (55796534200); Zhuang, Changwei (33068515300)
7006468812; 55487629900; 56512501900; 56948645000; 11940427600; 8253975000; 8895824200; 56075165500; 55796534200; 33068515300
Impact assessment of Wenchuan Earthquake on ecosystems
(2008) Shengtai Xuebao, 28 (12), pp. 5801 - 5809, Cited 65 times.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149231167&partnerID=40&md5=9b6d94d3bf4bd0220c4cc0ce153120c2

AFFILIATIONS: Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, Beijing, China; Chinese Research Academy of Environmental Sciences, Beijing, China; Graduate School of Landscape Architecture, Peking University, Beijing, China
ABSTRACT: The Wenchuan Earthquake hit area, locating at the transition between Sichuan basin and Tibet Plateau, is one of most ecologically fragile regions in China, and is playing an important role in ecological security of Sichuan basin as well. The earthquake had not only caused huge human-being lost and property damage, but also had resulted in great impacts on ecosystems. Integrated remote sensing data and field survey, we have assessed the ecological impacts of the earthquake. The results suggested that; (1) 122 136 hm2 of forest, grassland and wetland ecosystems were destroyed in the earthquake, and mainly distributed in 10 counties, such as Wenchuan, Pengzhou, Mianzhu. (2) 65,584 hm2 of giant panda habitat was lost in the earthquake, 5.92% of total panda habitat, (3) 94.64% of damaged ecosystems were distributed in the areas with earthquake magnitude higher than VIII, 53.82% of damaged ecosystems in the areas with altitudes lower than 2000 meters above sea level, 66.09% of damaged ecosystems in the areas with slopes between 30-50°. Since the ecosystem damage resulted from the earthquake will threat ecological security of Sichuan basin, ecosystem restoration should be one of the main focuses in the context of earthquake hit area rebuilding plan.
AUTHOR KEYWORDS: Ecological impacts; Ecosystems; Giant panda; Wenchuan Earthquake
INDEX KEYWORDS: carnivore; earthquake damage; ecological impact; ecosystem approach; field survey; habitat loss; habitat restoration; mammal; remote sensing; Sichuan earthquake 2008; Asia; China; Eurasia; Far East; Sichuan; Wenchuan; Ailuropoda; Ailuropoda melanoleuca
REFERENCES: 3rd National Survey Report on Giant Panda in China, (2006); 
Wang, Dajun, Turning earthquake disaster into long-term benefits for the panda, Conservation Biology, 22, 5, pp. 1356-1360, (2008); 
Acta Ecologica Sinica, (2001); 
Xu, Weihua, Designing a conservation plan for protecting the habitat for giant pandas in the Qionglai mountain range, China, Diversity and Distributions, 12, 5, pp. 610-619, (2006); 
Acta Ecologica Sinica, (2004); 
Taylor, Alan Henry, Bamboo regeneration after flowering in the wolong giant panda reserve, China, Biological Conservation, 63, 3, pp. 231-234, (1993)
PUBLISHER: Science Press
DOCUMENT TYPE: Article
PUBLICATION STAGE: Final

