Articles | Volume 9, issue 3
https://doi.org/10.5194/esurf-9-423-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-9-423-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 May 2021
Research article |
| 27 May 2021
| 27 May 2021
Relevance of acoustic methods to quantify bedload transport and bedform dynamics in a large sandy-gravel-bed river
UMR CNRS CITERES, University of Tours, Tours, France
Stéphane Rodrigues
UMR CNRS CITERES, University of Tours, Tours, France
Graduate School of Engineering Polytech Tours, University of Tours,
Tours, France
Thomas Geay
BURGEAP R & D, Grenoble, France
Sébastien Zanker
EDF, Division Technique Générale, Grenoble, France
Alexandre Hauet
EDF, Division Technique Générale, Grenoble, France
Pablo Tassi
EDF R & D – National Laboratory for Hydraulics and Environment (LNHE), Chatou, France
Saint-Venant Laboratory for Hydraulics, Chatou, France
Nicolas Claude
EDF R & D – National Laboratory for Hydraulics and Environment (LNHE), Chatou, France
EDF, Centre Ingénierie Hydraulique, La Motte Servolex, France
Philippe Jugé
CETU Elmis Ingénieries, University of Tours, Chinon, France
Antoine Duperray
UMR CNRS CITERES, University of Tours, Tours, France
Louis Vervynck
UMR CNRS CITERES, University of Tours, Tours, France
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Hydrophones are used to monitor sediment transport in the river by listening to the acoustic noise generated by particle impacts on the riverbed. However, this acoustic noise is modified by the river flow and can cause misleading information about sediment transport. This article proposes a model that corrects the measured acoustic signal. Testing the model showed that the corrected signal is better correlated with bedload flux in the river.
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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.
Despite the inherent difficulties in quantifying its value, sediment transport is essential to...
