5:15 PM - 6:30 PM
*Wataru Tanikawa1, Uramoto Go-Ichiro1, Shoichiro Uchiyama2, Arata Orinaka3, Tadashi Yamashina3, Keisuke Okamoto4, Tadashi Hara3 (1.Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research, 2.National Research Institute for Earth Science and Disaster Prevention, 3.Kochi University, 4.Kochi Prefectural Museum of History)