Influence of tide vs wave on sediment dynamics and dune internal architecture on a macrotidal inner continental shelf (eastern English Channel)

Y. Ferret (1) , Sophie Le Bot (1) , R. Lafite (1) , O. Blanpain (1) , Thierry Garlan (2)

1 M2C - Morphodynamique Continentale et Côtière
2 SHOM - Service Hydrographique et Océanographique de la Marine

Seabed of continental shelf environments is regularly covered with a multitude of bedforms formed in response to interactions between fluid dynamics and sediment. These mobile sedimentary features have been widely studied in order to prevent damages on human activities and anthropogenic structures. In coastal areas, submarine dune dynamics is mainly controlled by tidal currents and wind and wave forcings (e.g. Le Bot et al., 2004; Idier et al., 2011). However, it is generally not obvious to distinguish which forcing is predominant in dune dynamics.

Domaines: Interfaces continentales, environnement; Milieux et Changements globaux

Y. Ferret, Sophie Le Bot, R. Lafite, O. Blanpain, Thierry Garlan. Influence of tide vs wave on sediment dynamics and dune internal architecture on a macrotidal inner continental shelf (eastern English Channel). International Conference on Tidal Sedimentology (Tidalites), Jul 2012, Caen, France. ⟨hal-00753399⟩