CONCEPTUAL MODELLING OF A DOUBLE CRESCENTIC BARRED COAST (LEUCATE BEACH, FRANCE)

The south part of the Gulf of Lions coast (Mediterranean Sea) and its double crescentic sandbar system has been observed monthly during a 3-year long period (2005-2008) and yearly from 2000. This paper proposes a conceptual model of the morphodynamic evolution of this microtidal bar system supported by field bathymetric surveys and hydrodynamics measurements. This model is based on the different evolutive sequences observed. It is then compared with other observations made in the literature.