Bertin Xavier

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Research Director at CNRS
Section 30 of CNRS

Keywords : morphodynamics, tidal inlets, extreme events, numerical modelling

Research interests :
My research project aims at studying the physical processes that control the hydro-sedimentary dynamics and the morphodynamics of coastal zones controlled by tides and waves: tidal inlets, estuaries, sandbanks and sandspit. To carry out this research, I combine field observations (currents, waves, water levels, sediment transport, etc.) and the development and application of numerical models.

More specifically, this research project is subdivided in two themes:

1-Morphodynamics of tidal inlets.

I investigate the physical processes that control the hydro-sedimentary dynamics (wave-current interactions, sediment transport, tidal distortion, etc.) and morphological changes (seasonal cycles, closure and migration) of tidal inlets.

Morphodynamic simulation of an idealized tidal inlet under a tidal range of 2 m and constant a wave height of 1.5 m.
2-Physical processes under extreme events.
I investigate the physical processes that control hydrodynamics (storm surges, infra-gravity waves, setup), sediment transport and morphological changes (barrier breaching, erosion, washover development) during extreme events. The adequate representation of these processes if a scientific challenge that is at the center of my ongoing and future projects.
Numerical simulation of the marine flooding associated with Xynthia (February 2010) in the Pertuis Charentais area.

Publications :