4:30 PM - 4:45 PM
*Yasuhiko OHARA1,2, Robert J. Stern3, Fernando Martinez4, Teruaki Ishii5,6, Shoma Oya6, Katsuyoshi Michibayashi6,2 (1.Hydrographic and Oceanographic Department of Japan, 2.Japan Agency for Marine-Earth Science and Technology, 3.University of Texas at Dallas, 4.University of Hawaii, 5.Fukada Geological Institute, 6.Shizuoka University)