10:00 AM - 10:15 AM
*Hayu Ota1, Junichiro Kuroda1, Akira Ishikawa2, Katsuhiko Suzuki3, Reishi Takashima4 (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo, 2.Department of Earth and Planetary Sciences, Tokyo institute of Technology, 3.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 4.Tohoku University Museum, Tohoku University)