Entrainment and deposition of  boulders in a gravel bed river

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

doi:https://doi.org/10.5194/esurf-11-21-2023

Articles | Volume 11, issue 1

https://doi.org/10.5194/esurf-11-21-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esurf-11-21-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 1

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

Data sets

Entrainment and deposition of boulders in a gravel bed river P. Allemand https://doi.org/10.7910/DVN/QRHM8E

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.