9:45 AM - 10:00 AM
*Satoru Urakawa1, Hidenori Terasaki3, Shumpachi Kishimoto1, Naonori Inoue2, Yusaku Takubo3, Yuta Shimoyama3, Fuyuka Kurokawa4, Akihiko Machida5 (1.Department of Earth Sciences, Okayama University, 2.School of Science, Okayama University, 3.Department of Earth and Space Science, Osaka University, 4.School of Science, Osaka University, 5.Japan Atomic Energy Agency)