11:15 AM - 11:30 AM
*Kazuhisa Matsumoto1,2, Satoshi Okumura1,2, Takayuki Nakatani2, Toshihiro Suzuki2, Akihiko Tomiya2, Hidemi Ishibashi3 (1.Department of Earth Science, Graduate School of Science, Tohoku University , 2.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 3.Faculty of Science, Shizuoka Unversity)