5:15 PM - 6:45 PM
*Ayumi Maeda1,2, Miyuki Nishijima2, Akira Iguchi2, Atsushi Suzuki2, Shunsuke Kondo3, Hiroko Kamoshida4 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Geological Survey of Japan, 3.KANSO TECHNOS CO. LTD., 4.Japan Organization for Metals and Energy Security (JOGMEC))