11:15 AM - 11:30 AM
*Osamu KAZAOKA1, Taku KOMATUBARA2, Kiyohide MIZUNO2, Kunio FURUNO1, Takeshi YOSHIDA1, Yoshinori MIYACHI2, Masaaki MORISAKI1, Atsushi KAGAWA1, Takushi HOSOYA3 (1.Research Institute of Environmental Geology, Chiba, 2.AIST, Geological Survey of Japan. Institute of Geology and Geoinformation, 3.Chuo Kaihatsu Corporation)