3:45 PM - 4:00 PM
*Reona Hiramine1, Daisuke Ishimura1, Kaori Aoki2, Takehiko Suzuki1, Tsutomu Soda3, Tatsuki Watanabe1, Motoko Yamada4, Toshihiko Ichihara5,6, Keitaro Yamada7 (1.Department of Geography, Tokyo Metropolitan University, 2.Research Center for Volcanic Hazards and Their Mitigation, Tokyo Metropolitan University, 3.Institute of Tephrochronology for Nature and History Co., Ltd., 4.Department of Geography, Tokyo Metropolitan University., 5.Sedimentary Environments Research, 6.Research Center for Coastal Seafloor, Kyushu Universit, 7.Research Centre for Palaeoclimatology, Ritsumeikan University)