MODELING OF TIDALLY-INDUCED HYDRO-SEDIMENTARY PROCESSES IN THE COASTAL ZONE OF THE SOUTHERN PART OF THE DOVER STRAIT

The present paper deals with the modelling of hydro-sedimentary proces ses in the coastal area near Cape Gris-Nez and Cape Blanc-Nez (Dover S trait). The modelling procedure consists in coupling different hydro-s edimentary process models with a high spatial resolution two-dimension al tidal flow model (Nguyen and Ouahsine, 1992). The sediment transpor t models used include two semi-empirical models based on a dimensionle ss analysis and energetic concepts (Ackers and White, 1973; Engelund a nd Hansen, 1967), and a more heuristic cu (concentration times velocit y) model (van Rijn, 1984 a; b). All these models are applied to predic t instantaneous and tidally-integrated sediment transports in the area under investigation.