1. Laboratoire Geosciences Ocean, UMR6538, IUEM, UBO Plouzané France
2. Ifremer, Geosciences Marines, Centre de Brest Plouzané France
3. Department of Geodynamics and Sedimentology, Faculty of Earth Sciences, Geography and Astronomy University of Vienna Vienna Austria
4. Centro Nazionale Terremoti, Istituto Nazionale di Geofisica e Vulcanologia Rome Italy