Articles | Volume 8, issue 4
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


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Matteo Saletti on behalf of the Authors (18 Aug 2020)  Author's response   Manuscript 
ED: Publish as is (03 Sep 2020) by Greg Hancock
ED: Publish as is (08 Sep 2020) by Niels Hovius (Editor)
AR by Matteo Saletti on behalf of the Authors (09 Sep 2020)
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.