Ayaka Nakamura¹, *Masaaki Miyahara¹, Hiroki Suga², Akira Yamaguchi³, Daisuke Wakabayashi⁴, Shohei Yamashita⁴, Yasuo Takeichi⁴, Yoshio Takahashi², Eiji Ohtani⁵ (1.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 2.Department of Earth and Planetary, Graduate School of Science, The University of Tokyo, 3.National Institute of Polar Research, 4.Institute of Materials Structure Science, High-Energy Accelerator Research Organization, 5.Department of Earth Sciences, Graduate School of Science, Tohoku University)