*Akifumi Nakayama1, Masahiro Ikoma1, Shingo Kameda2 (1.Department of Earth and Planetary, Graduate School of Sciences, The University of Tokyo, 2.School of Science, Rikkyo University)
convener:Masahiro Ikoma(Department of Earth and Planetary Science, The University of Tokyo), Norio Narita(The University of Tokyo), Yuka Fujii(National Astronomical Observatory of Japan)