Articles | Volume 4, issue 3
Research article
 | Highlight paper
29 Aug 2016
Research article | Highlight paper |  | 29 Aug 2016

Gravel threshold of motion: a state function of sediment transport disequilibrium?

Joel P. L. Johnson


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 Joel Johnson on behalf of the Authors (31 Jul 2016)  Author's response   Manuscript 
ED: Publish as is (02 Aug 2016) by Daniel Parsons
ED: Publish as is (02 Aug 2016) by Andreas Lang (Editor)
AR by Joel Johnson on behalf of the Authors (11 Aug 2016)
Short summary
Accurately predicting gravel transport rates in mountain rivers is difficult because of feedbacks with channel morphology. River bed surfaces evolve during floods, influencing transport rates. I propose that the threshold of gravel motion is a state variable for channel reach evolution. I develop a new model to predict how transport thresholds evolve as a function of transport rate, and then use laboratory flume experiments to calibrate and validate the model.