Preprints
https://doi.org/10.5194/egusphere-2024-3802
https://doi.org/10.5194/egusphere-2024-3802
07 Jan 2025
 | 07 Jan 2025

Morphological response to climate-induced flood event variability in a sub-arctic river

Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi

Abstract. This study examined the effects of climate-induced flood event variability and peak sequencing on the morphological response of a sub-arctic river. We classified 32 years of discharge hydrographs of a sub-arctic river in terms of their flood event shape variability and peak sequencing, and linked them to seasonal and annual climate conditions. We utilised morphodynamic modelling to examine the effects of the flood characteristics on the morphological response of the river. The findings highlight the critical role that discharge hydrograph shape and sequencing plays in shaping river morphology and sediment transport dynamics. The increasing frequency of double-peaking floods, associated with higher geomorphic activity and sediment loads due to rising temperature and precipitation amount, points to alterations in the morphological response of the river channel. This suggests a gradual change in long-term morphological adjustment and potentially a gradual shift in sediment transport regime in the future. These shifts could have long-term implications for river stability, sediment connectivity, and ecosystem dynamics. Even in regions where hydroclimatic changes are not yet fully visible, the flood event characteristics can be evolving and re-shaping the morphodynamics of the river channel. The study underscores the importance of catchment-scale assessments and future research into the combined effects of flood sequencing, sediment transport, and changing hydroclimatic conditions.

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Journal article(s) based on this preprint

10 Sep 2025
Morphological response to climate-induced flood-event variability in a subarctic river
Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi
Earth Surf. Dynam., 13, 827–844, https://doi.org/10.5194/esurf-13-827-2025,https://doi.org/10.5194/esurf-13-827-2025, 2025
Short summary
Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-3802', Anonymous Referee #1, 09 Feb 2025
    • AC1: 'Reply on RC1', Linnea Blåfield, 07 Mar 2025
  • RC2: 'Comment on egusphere-2024-3802', Anonymous Referee #2, 31 Mar 2025

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-3802', Anonymous Referee #1, 09 Feb 2025
    • AC1: 'Reply on RC1', Linnea Blåfield, 07 Mar 2025
  • RC2: 'Comment on egusphere-2024-3802', Anonymous Referee #2, 31 Mar 2025

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Linnea Blåfield on behalf of the Authors (27 Apr 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to minor revisions (review by editor) (27 May 2025) by Rebecca Hodge
AR by Linnea Blåfield on behalf of the Authors (06 Jun 2025)  Author's response 
EF by Mario Ebel (10 Jun 2025)  Manuscript 
EF by Mario Ebel (10 Jun 2025)  Author's tracked changes 
ED: Publish as is (20 Jun 2025) by Rebecca Hodge
ED: Publish as is (27 Jun 2025) by Wolfgang Schwanghart (Editor)
AR by Linnea Blåfield on behalf of the Authors (27 Jun 2025)  Manuscript 

Journal article(s) based on this preprint

10 Sep 2025
Morphological response to climate-induced flood-event variability in a subarctic river
Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi
Earth Surf. Dynam., 13, 827–844, https://doi.org/10.5194/esurf-13-827-2025,https://doi.org/10.5194/esurf-13-827-2025, 2025
Short summary
Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi
Linnea Blåfield, Carlos Gonzales-Inca, Petteri Alho, and Elina Kasvi

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Latest update: 10 Sep 2025
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Short summary
This study examined climate-driven flood variability's impact on a sub-arctic river's morphology. Analysis of 32 years of data revealed that flood shapes significantly influence sediment transport. Rising temperatures and precipitation are increasing double-peaking floods, altering sediment dynamics and stability. These findings highlight the need for long-term monitoring and catchment-scale studies to address evolving hydroclimatic impacts and their implications.
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