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Bedload transport simulation with the model sedFlow: application to mountain rivers in Switzerland

Type of publication Not peer-reviewed
Publikationsform Contribution to book (non peer-reviewed)
Publication date 2016
Author Rickenmann Dieter, Böckli Martin, Heimann Florian U.M., Badoux Alexandre, Turwoski Jens M.,
Project SEDRIVER: Effects of sediment transporting flows on fish habitat in mountain rivers - expected development until 2050 taking into account climate change
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Contribution to book (non peer-reviewed)

Book INTERPRAEVENT 2016 – Conference Proceedings
Editor , Koboltschnig Gernot
Publisher International Research Society INTERPRAEVENT, Klagenfurt Austria
Page(s) 387 - 395
ISBN 978-3-901164-24-8
Title of proceedings INTERPRAEVENT 2016 – Conference Proceedings

Open Access

URL http://interpraevent2016.ch
Type of Open Access Website

Abstract

The sedFlow simulation model for one-dimensional calculations of discharge and bedload transport was applied to five Swiss mountain rivers. After calibration it was capable of reproducing the observed bedload transport behavior reasonably well in the study rivers. For most simulations, the variable power equation (VPE) was used together with a reduced energy slope for the bedload transport calculations. The simulations with the Rickenmann (2001) transport equation were found to be suitable for simulation periods including a major flood event. The Wilcock and Crowe (2003) equation, a reference shear stress based approach, resulted in better agreement with long-term observations of bedload transport with only moderate peak flows. Using scenario simulations for a flood event, the effect of important lateral sediment input from tributaries due to debris-flow activity was investigated, indicating that bedload transport along the main river is mainly altered near the tributary locations.
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