3:30 PM - 3:45 PM
*Shoichi Kiyokawa1, Tsubasa Miki1, Yuhei Aihara1,4, Shuhei Teraji1,3, Mami Takehara2, Kenji Horie2 (1.Department of Earth and Planetary Sciences Faculty of sciences, Kyuushu University, 2.National Institute of Polar Research, 3.Nippon Steel and Smitomo Metal, 4.IMPEX)