Articles | Volume 9, issue 3
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, Stéphane Rodrigues, Thomas Geay, Sébastien Zanker, Alexandre Hauet, Pablo Tassi, Nicolas Claude, Philippe Jugé, Antoine Duperray, and Louis Vervynck

Video supplement

Unit bedload rate = 39 g/s with dunes J. Le Guern

Unit bedload rate = 39 g/s J. Le Guern

Unit bedload rate = 53 g/s J. Le Guern

Downstream of a bar front J. Le Guern

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.