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The structure of nearshore currents driven by changes in meteo-marine forcings

Abstract : This work aims to better understand the physical processes governing the wave propagation in a vertically sheared current and the resulting nearshore circulation patterns. It is based on a high resolution hydro-morphodynamic field campaign, ROUSTY2014, collecting a comprehensive hydro-morphodynamical dataset during a full winter season. The overall analysis highlights three main circulation patterns, largely controled by the bathymetric features and by co-working or competing wind and waves forcings. Regarding the vertical structuration of the circulation, most of field observations shown seaward directed circulation with onshore component close to the air/sea surface whose intensity varies according to incoming wave conditions. Forth, vertical shear increase when breaking happen close to sensor location and orientation of mean circulation depend on wind direction.
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https://hal.archives-ouvertes.fr/hal-01426582
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Submitted on : Wednesday, January 4, 2017 - 4:50:56 PM
Last modification on : Friday, August 5, 2022 - 10:55:04 AM

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  • HAL Id : hal-01426582, version 1

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Lise Petitjean, Damien Sous, Vincent Rey, Frederic Bouchette, F. Sabatier, et al.. The structure of nearshore currents driven by changes in meteo-marine forcings. 35th International Conference on Coastal Engineering, Nov 2016, Antalya, Turkey. ⟨hal-01426582⟩

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