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Estimation d'une courbe de tarage hauteur-dénivelée-débit pour une rivière influencée par la marée

Abstract : Passive acoustic monitoring of the self-generated noise of particle impacts has been shown to be correlated to bedload flux and bedload size. However, few studies have concentrated on the role of acoustic wave propagation in a river. For the first time, the river environment is modeled as a Pekeris waveguide, where a wave number integration technique is used to predict the transformation of sounds through their propagation paths. Focusing on the distance of a hydrophone from the channel bed and cutting off the low frequencies produced by impacts between gravel particles, we demonstrate that acoustic propagation modifies the spectral content of bedload-generated sound. Acoustic signals analyzed with the proposed model are interpreted by comparison to Helley
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Submitted on : Wednesday, March 28, 2018 - 11:45:40 AM
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B. Camenen, Guillaume Dramais, Jérôme Le Coz, Tuan Duc Ho, Nicolas Gratiot, et al.. Estimation d'une courbe de tarage hauteur-dénivelée-débit pour une rivière influencée par la marée. La Houille Blanche - Revue internationale de l'eau, EDP Sciences, 2017, 5, pp.16-21. ⟨10.1051/lhb/2017039⟩. ⟨hal-01745487⟩

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