Modélisation morphodynamique cross-shore d'un estran vaseux |
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Authors: | Benoı̂t Waeles Pierre Le Hir Ricardo Silva Jacinto |
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Institution: | Ifremer, centre de Brest, DEL/EC, BP 70, 29280 Plouzané, France |
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Abstract: | Numerical experiments were performed to simulate the profile evolution of an intertidal mudflat with a 1D cross-shore morphodynamical model. First, the hydrodynamical forcing is a cross-shore tidal current due to semi-diurnal variations of the free surface elevation at the open boundary. Further, considering the conservation of the action density of surface gravity waves, a wave height (and resulting bottom shear stress) calculation is added to the morphodynamical model. Results of the numerical experiments show that the shape of the profile reaches equilibrium. The mudflat progrades continually when the forcing is tide only, whereas it can be steady under the simultaneous action of tide and waves. To cite this article: B. Waeles et al., C. R. Geoscience 336 (2004). |
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Keywords: | zone intertidale modèle numérique courant de marée vagues sédiment cohésif équilibre morphodynamique intertidal flat numerical model tidal flow waves cohesive sediment morphodynamical equilibrium |
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