Articles | Volume 9, issue 3
Earth Surf. Dynam., 9, 423–444, 2021
https://doi.org/10.5194/esurf-9-423-2021
Earth Surf. Dynam., 9, 423–444, 2021
https://doi.org/10.5194/esurf-9-423-2021

Research article 27 May 2021

Research article | 27 May 2021

Relevance of acoustic methods to quantify bedload transport and bedform dynamics in a large sandy-gravel-bed river

Jules Le Guern et al.

Video supplement

Unit bedload rate = 39 g/s with dunes J. Le Guern https://doi.org/10.5446/51563

Unit bedload rate = 39 g/s J. Le Guern https://doi.org/10.5446/51562

Unit bedload rate = 53 g/s J. Le Guern https://doi.org/10.5446/51561

Downstream of a bar front J. Le Guern https://doi.org/10.5446/51560

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Short summary
Despite the inherent difficulties in quantifying its value, sediment transport is essential to understanding fluvial systems. This study tries to improve the measurement by comparing several methods. Acoustic methods are compared to direct measurements with samplers. The hydrophone is well adapted to quantify sediment transport in mountain streams, but this study shows the potential and the efficiency of this device in large lowland rivers.