*Yoko Kebukawa¹, Tatsuaki Okada², Motoo Ito³, Jun Aoki⁴, Yosuke Kawai⁴, Jun Matsumoto², Noel Grand⁵, Arnaud Buch⁶, Michisato Toyoda⁴, Hervé Cottin⁵, Hisayoshi Yurimoto^7,2, Hajime Yano², Takahiro Iwata², Osamu Mori² (1.Yokohama National University, 2.Japan Aerospace Exploration Agency, 3.Kochi Institute for Core Sample Research JAMSTEC, 4.Osaka University, 5.LISA, Université Paris-Est Créteil, 6.Ecole Centrale Paris, 7.Hokkaido University)