Articles | Volume 13, issue 5
https://doi.org/10.5194/esurf-13-827-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-13-827-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Sep 2025
Research article |
| 10 Sep 2025
| 10 Sep 2025
Morphological response to climate-induced flood-event variability in a subarctic river
Linnea Blåfield
CORRESPONDING AUTHOR
Department of Geography and Geology, University of Turku, Turku, Finland
Carlos Gonzales-Inca
Department of Geography and Geology, University of Turku, Turku, Finland
Petteri Alho
Department of Geography and Geology, University of Turku, Turku, Finland
Finnish Geospatial Research Institute FGI, National Land Survey of Finland, Espoo, Finland
Elina Kasvi
Department of Geography and Geology, University of Turku, Turku, Finland
Related authors
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Tua Nylén, Mikel Calle, and Carlos Gonzales-Inca
EGUsphere, https://doi.org/10.5194/egusphere-2023-1399, https://doi.org/10.5194/egusphere-2023-1399, 2023
Preprint archived
Short summary
Short summary
Communities all around the Arctic urgently need information on how their coast is changing in response to climate change. We developed an automized method for mapping Arctic shoreline displacement from open satellite images. We show how coastal change hotspots, glacier retreat, spit migration and delta development can be identified from such data. Being highly efficient and accurate, our method has potential for calculating the first 40-year time series of shoreline displacement in the Arctic.
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Short summary
This study shows that climate-driven changes in spring flood patterns, especially hydrograph shape and peak sequencing, strongly affect sediment transport and river morphology in a subarctic river. Rising temperatures and more rain-on-snow events are increasing flood variability, leading to more event-driven and unpredictable sediment dynamics. Adaptive management is needed to respond to these emerging changes.
This study shows that climate-driven changes in spring flood patterns, especially hydrograph...
