4:30 PM - 4:45 PM
*Atsushi Oshida1, Toshihiro Maki2, Takumi Matsuda2, Shigeo Okuma3, Masao Komazawa3, Toi Tachibana1, Ryuji Kubota1 (1.Kawasaki Geological Engineering Co., Ltd., 2.Institute of Industrial Science, The University of Tokyo, 3.Geological Survey of Japan, AIST)