4:00 PM - 4:15 PM
*Kohei Nimura1, Katsuyoshi Michibayashi1,2, Yumiko Harigane3, Yasuhiko Ohara2,4 (1.Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, 2.JAMSTEC, 3.Research Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 4.Hydrographic and Oceanographic Department of Japan)