1. Institute for Geophysics, Jackson School of Geosciences; University of Texas at Austin; J. J. Pickle Research Campus, 10100 Burnet Road, Building 196,; Austin; Texas; 78758; USA
2. Center for Marine Science; University of North Carolina at Wilmington; 5600 Marvin Moss Lane,; Wilmington; North Carolina; 28409; USA
3. Department of Geological Sciences; University of Florida; PO Box 112120; Gainesville; Florida; 32611; USA
4. ISTEP UPMC-UMR 7193; 4 place Jussieu,; F-75252; Paris; France
5. Géosciences Azur; UMR CNRS 6526; 250 rue Albert Einstein, bâtiment 4,; F-06560; Valbonne; France