12:00 PM - 12:15 PM
*Kyuichi Kanagawa1, Tomoya Nakanishi2, Morito Kuwana3, Michiyo Sawai1, Takehiro Hirose4 (1.School of Science, Chiba University, 2.Graduate School of Science and Engineering, Chiba University, 3.Faculty of Science, Chiba University, 4.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)