*Kazuhiro Yamamoto¹, Masahito Nose¹, Satoshi Kasahara², Shoichiro Yokota³, Kunihiro Keika², Ayako Matsuoka⁴, Mariko Teramoto⁵, Reiko Nomura⁴, Kazue Takahashi⁶, Massimo Vellante⁷, Balazs Heilig⁸, Akiko Fujimoto⁹, Yoshimasa Tanaka¹⁰, Manabu Shinohara¹¹, Iku Shinohara⁴, Yoshizumi Miyoshi⁵ (1.Graduate School of Science, Kyoto University, 2.The University of Tokyo, 3.Osaka University, 4.Japan Aerospace Exploration Agency, 5.Nagoya University, 6.Johns Hopkins University Applied Physics Laboratory, 7.University of L'Aquila, 8.Geological and Geophysical Institute of Hungary, 9.Kyushu University, 10.National Institute of Polar Research, 11.National Institute of Technology, Kagoshima College)