Articles | Volume 22, issue 1
https://doi.org/10.5194/hess-22-767-2018
https://doi.org/10.5194/hess-22-767-2018
Research article
 | 
26 Jan 2018
Research article |  | 26 Jan 2018

Passive acoustic measurement of bedload grain size distribution using self-generated noise

Teodor Petrut, Thomas Geay, Cédric Gervaise, Philippe Belleudy, and Sebastien Zanker

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Latest update: 21 Jan 2025
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Short summary
Our interest is focused on developing the hydrophone technique to estimate the size of particles transported in rivers. The analytic spectral solution of the impact between rigid particles is used to model the power spectrum of a sediment mixture, or the sediment-generated noise. Estimations of grain size distributions in the Isère River using real measured spectra are successfully validated by the physical sampling techniques. Moreover, the grain size sorting process is revealed by acoustics.