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Preprints
https://doi.org/10.5194/egusphere-2023-1698
https://doi.org/10.5194/egusphere-2023-1698
09 Aug 2023
 | 09 Aug 2023

Tracking slow-moving landslides with PlanetScope data: new perspectives on the satellite’s perspective

Ariane Mueting and Bodo Bookhagen

Abstract. PlanetScope data with daily temporal and 3-m spatial resolution hold an unprecedented potential to quantify and monitor surface displacements from space. Slow-moving landslides, however, are complex and dynamic targets that alter their topography over time. This leads to orthorectification errors, resulting in inaccurate displacement estimates when images acquired from varying satellite perspectives are correlated. These errors become particularly concerning when the magnitude of orthorectification error exceeds the signal from surface displacement which is the case for many slow-moving landslides with annual velocities of 1–10 m/yr. This study provides a comprehensive assessment of orthorectification errors in PlanetScope imagery and presents effective mitigation strategies for both unrectified L1B and orthorectified L3B data. By implementing these strategies, we achieve sub-pixel accuracy, enabling the estimation of realistic and temporally coherent displacement over landslide surfaces. The improved signal-to-noise ratio results in higher-quality disparity maps, allowing for a more detailed analysis of landslide dynamics and their driving factors.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Journal article(s) based on this preprint

01 Oct 2024
Tracking slow-moving landslides with PlanetScope data: new perspectives on the satellite's perspective
Ariane Mueting and Bodo Bookhagen
Earth Surf. Dynam., 12, 1121–1143, https://doi.org/10.5194/esurf-12-1121-2024,https://doi.org/10.5194/esurf-12-1121-2024, 2024
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

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This study investigates the use of optical PlanetScope data for offset tracking of Earth-surface...
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