Caractérisation du fonctionnement hydrosédimentaire de l'estuaire de la Vilaine à partir d'études bathymétriques et altimétriques (Altus)

From the construction of the Arzal’s dam in 1960’s, the Vilaine estuary has been rapidly in-filled. According to bathymetrical, hydrological and altimetrical (Altus) data, different hydrodynamical patterns have been identified at various spatial and temporal scales leading to erosional or depositional periods. The hydrodynamical pattern’s series allows a better understanding and quantification of sedimentological processes at long term and at short term. Finally, we discussed the influence of bedforms (ridge and runnels or planar bed) on sedimentological processes over an intertidal mudflat.

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