Takayuki Tashiro¹, Akizumi Ishida², Masako Hori², Motoko Igisu³, Yuji Sano², *Tsuyoshi Komiya¹ (1.Department of Earth Science & Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology)

*Kazuko Yoshizawa¹, Satoshi Takahashi¹, Masayuki Ehiro², Takanobu Tsuihiji¹, Shun Muto¹, Takayuki Tashiro¹, Tsuyoshi Iizuka¹, Masato Tanaka¹, Yoshio Takahashi¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.The Tohoku University Museum, Tohoku University)