GM8.2

Sediment transport, erosion, and channel morphology
Convener: JM Turowski  | Co-Conveners: P. Molnar , Carling , Richardson 
Oral Programme
 / Wed, 22 Apr, 08:30–12:00  / Room 19
Poster Programme
 / Attendance Wed, 22 Apr, 17:30–19:00  / Hall A
The transport, erosion and deposition of sediment determines channel morphology. At the same time, channel morphology acts as a boundary condition for sediment transport. These complex interactions take place at different timescales, from short term response to individual floods to long term response to the representative flow conditions. In this session we welcome contributions on sediment transport and erosional processes and how these shape the channel at all timescales, addressing questions like:
What is the role of extreme events in determining channel morphology compared to gradual channel change?
Are thresholds involved and can the relative roles of different flood magnitudes be quantified?
How do we recognize and attribute past channel change?
How do we best measure it in the field?
What is the influence of catchment parameters, for example the geology of the area or the role of riparian vegetation in the morphological adjustment of streams?
How does channel morphology and large-scale roughness affect sediment transport and what is the role of sediment transport in shaping the channel?
Furthermore, we welcome contributions at all spatial scales. This includes work on local transport and erosion processes in the river, on bedform dynamics and occurrence, and on reach-scale features such as step-pool morphologies. Contributions may come from field-based as well as experiment studies.