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

Auteur(s): Petitjean L., Sous D., Rey V., BOUCHETTE Frederic, Sabatier Francois, Meulé Samuel

Conference: 35th International Conference on Coastal Engineering (Antalya, TR, 2016-11-17)
Actes de conférence: , vol. p. (2016)


Ref HAL: hal-01426582_v1
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Résumé:

This work aims to better understand the physical processes governing the wave propagation in a vertically shearedcurrent and the resulting nearshore circulation patterns. It is based on a high resolution hydro-morphodynamic fieldcampaign, 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 byco-working or competing wind and waves forcings. Regarding the vertical structuration of the circulation, most of fieldobservations shown seaward directed circulation with onshore component close to the air/sea surface whose intensityvaries according to incoming wave conditions. Forth, vertical shear increase when breaking happen close to sensorlocation and orientation of mean circulation depend on wind direction.