A geophysical engineer, I joined the CEA to participate in geophysical studies, then seismology. Responsible for the Polynesian Center for Tsunami Prevention in the 1990s, I represent France in the coordination group of the tsunami warning system in the Pacific (Unesco) which I chaired. Seconded to Unesco in 2005 to coordinate the establishment of the warning system in the Indian Ocean, have since established and then coordinated the National Tsunami Warning Center, and contributes to the coordination group for the Mediterranean and North Atlantic -est, as well as research projects.