Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 14, issue 4
Articles | Volume 14, issue 4
https://doi.org/10.5194/esurf-14-635-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-14-635-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 4
Research article
 | 
25 Aug 2026
Research article |  | 25 Aug 2026

Lift or impact: modelling bedrock incision coupled with sediment dynamics

Philippe Davy, Wolfgang Schwanghart, Jürgen Mey, Caroline Darcel, and Angela Landgraf

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Short summary
The impact of sediment grains on the riverbed is a key driver of bedrock erosion yet is rarely included in studies of landscape evolution. We propose an equation to address this issue by considering the distinction between grain lift and grain impact. We solved and analysed these equations for simple cases, such as the downstream evolution of a riverbed, and implemented them in a numerical code that simulated the retreat of a knickpoint.
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