Stream-bank erosion on the rivers of Western Siberia
https://doi.org/10.55959/MSU0579-9414.5.80.4.4
Abstract
In recent decades, climate change and human activities increasingly impact rivers, which could provoke or enhance the dangerous riverbed processes, e.g. riverbank erosion. The availability of satellite images with global coverage provides ample opportunities for the study of horizontal channel deformations and their quantitative assessment. This became the basis for an active development of remote sensing methods that could be widely used for all the variety of river sizes and their channel types. The article deals with the general analysis of dangerous fluvial processes (riverbank erosion) on the lowland rivers of Western Siberia using modern methods of their investigation. Satellite images of CORONA, Landsat and Sentinel were used for the analysis, which make it possible to detail changes in banks with high accuracy by applying both traditional (manual) and semi-automated GIS tools-based methods of image interpretation and digitizing. The results showed that the rate of stream-bank erosion varies depending on the natural conditions of riverbed formation, the hydrological conditions and the river size. The rate of stream-bank erosion on the Ob and Irtysh rivers varies primarily due to the local factors, such as the dispersion of runoff in the branches, the influence of indigenous banks, the spread of channel types and morphologically homogeneous areas, the parameters of their shapes, etc. The highest erosion rates (2–3 m/year or more) among the large and medium-size rivers were recorded for the Tom and Chulym rivers. But in general, the rivers of Western Siberia are characterized by relatively low stream-bank erosion rates, which is due to the natural features of the region.
Keywords
fluvial processes,
river channel migration,
stream-bank erosion,
remote sensing methods,
GIS,
Western Siberia
Supporting agencies: The study was financially supported by the Russian Science Foundation (no. 23-17-00065 for the data of riverbank erosion on rivers in the forest zone of the Ob-Irtysh basin, no. 23-77-01006 for the new data and a general analysis of riverbank erosion for the lowland rivers of Western Siberia).
About the Authors
A. A. Kurakova
Lomonosov Moscow State University
Russian Federation
Russian Federation
A.A. Kurakova - Scientifi c Researcher, Ph.D. in Geography; Faculty of Geography, Makkaveev Research Laboratory of Soil Erosion and Fluvial Processes
E. D. Pavlyukevich
Lomonosov Moscow State University; Water Problems Institute of Russian Academy of Sciences
Russian Federation
Russian Federation
E.D. Pavlyukevich - Junior Scientifi c Researcher, Ph.D. in Geography; Faculty of Geography, Makkaveev Research Laboratory of Soil Erosion and Fluvial Processes; Laboratory of Regional Hydrology
D. V. Bolshakov
Lomonosov Moscow State University
Russian Federation
Russian Federation
D.V. Bolshakov - Junior Scientific Researcher; Faculty of Geography, Laboratory of Geochemistry of Natural Waters
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Review
For citations:
Kurakova A.A., Pavlyukevich E.D., Bolshakov D.V. Stream-bank erosion on the rivers of Western Siberia. Lomonosov Geography Journal. 2025;(4):40-48. (In Russ.) https://doi.org/10.55959/MSU0579-9414.5.80.4.4
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