Abstract

The distribution of fine sediment deposits in a coastal field near the estuary of the River Loire is presented. Tidal currents and swell heights are described by a numerical 2DH model implemented in this study. A method, based on the study of hydrodynamic forces and their action on fine sediment dynamics, is developed in order to determine the sedimentary tendencies observed in several points of the studied field. The application of this method in an area centred on Bourgneuf bay makes it possible to explain the strong accumulation of fine sediments in this bay and the frequently observed high turbidity produced by resuspension.

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