Articles | Volume 8, issue 4
https://doi.org/10.5194/esurf-8-855-2020
https://doi.org/10.5194/esurf-8-855-2020
Research article
 | 
21 Oct 2020
Research article |  | 21 Oct 2020

Experimental study of sediment supply control on step formation, evolution, and stability

Matteo Saletti and Marwan A. Hassan

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Latest update: 01 Mar 2024
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Short summary
Mountain streams often display a stepped morphology but the conditions under which these steps form, remain stable, and eventually collapse are still not entirely clear. We run flume experiments to study how (a) the amount of sediment input and (b) channel width variations affect step dynamics in steep channels. Steps form preferentially in areas of flow convergence (channel narrowing) and their frequency is higher when sediment supply is larger than zero but smaller than the transport capacity.