Please note that this session was withdrawn and is no longer available in the respective programme. This withdrawal might have been the result of a merge with another session.

GM5.3

Advances in fluvial erosion mechanics - from rolling sediment to bedrock wear

Mountain rivers express a wide range of physical conditions, from pure bedrock-controlled undulating gorges, to alluviated valleys with sinuous channel courses. The complexity of mountain river morphology, controlled mainly by sediment transport and bedrock erosion, poses challenges for theory development and response prediction related to tectonics, lithology, flood dynamics, and mass movements. For example, how do mountain rivers adjust to sediment supply disturbances as a result of changes from snow-melt to runoff dominated hydrologic conditions, or how do erosion processes interact in shaping downstream geometry over lithological boundaries? These and similar questions have important implications for predicting how mountain rivers may respond to climate signals, and how humans plan for potential hazards faced by mountain communities and associated infrastructure.

This session welcomes connected field, experimental, theoretical, and modelling efforts aimed at improving (1) our understanding of erosion mechanisms of both alluvium and bedrock, as well as (2) predictive modelling considering sediment transport and channel morphology over various scales in mountain channels.

Co-organized by
Convener: Alexander BeerECSECS | Co-conveners: Shawn Chartrand, Claire MastellerECSECS, Matteo SalettiECSECS