Articles | Volume 11, issue 1
https://doi.org/10.5194/esurf-11-21-2023
https://doi.org/10.5194/esurf-11-21-2023
Research article
 | 
19 Jan 2023
Research article |  | 19 Jan 2023

Entrainment and deposition of boulders in a gravel bed river

Pascal Allemand, Eric Lajeunesse, Olivier Devauchelle, and Vincent J. Langlois

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Latest update: 21 Jun 2024
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Short summary
We recorded yearly images of a bar of the Vieux-Habitants river, a river located on Basse-Terre (Guadeloupe). These images, combined with measurements of the river discharge, allow us to monitor the evolution of the population of boulders. We estimate the smallest discharge that can move the boulders and calculate the effective transport time. We show that the likelihood of a given boulder remaining at the same location decreases exponentially, with an effective residence time of 17 h.