The aim of this paper is to present a large international field experiment that took place in March-April 2008 on the French Aquitanian coast. During this field experiment, both very small and large spatial and temporal scales have been explored concerning hydrodynamic, sedimentary and morphodynamic processes in the surf and swash zones using innovative methods. This field experiment, one of the largest to take place in Europe (with the COAST 3D project), will provide a unique data set to explore surf zone and swash processes and improve numerical models in presence of very energetic events (5 storms with Hs > 5m) on macrotidal multi-barred sandy beaches. Mots-cles : Experimental – plage sableuse – meso, macrotidal -processus hydrodynamiques – processus sedimentaires – morphodynamique – zones de surf et jet de rive 636 Instrumentation, mesures, imagerie et teledetection
