Sediment transport over an intertidal mudflat: field investigations and estimation of fluxes within the “Baie de Marenngres-Oleron” (France)

摘要: Abstract This contribution analyses the various hydrodynamic forcings responsible for sediment dynamics over intertidal mudflat of Brouage (Baie de Marennes-Oleron). is characterized by a gentle slope and an extensive ridge runnel network. The have been thoroughly investigated continuous measurements turbidity, waves tidal currents, core bed level monitoring. Turbidity highlight importance to resuspension mudflat. Conversely, higher turbidities during spring tides in channel, further offshore, indicate major tide transport within embayment. Overall, large amount mobile consistently present bay, either as suspensions tides, or fluid mud deposits runnels neap tides. Residual fluxes, computed from measurements, proved be onshore but offshore periods wave domination. Finally, overview area proposed on basis flux estimations.