Institution: | Geo-Research Institute, 4-3-2;Itachibori, Nishi-ku, Osaka 550-0012, Japan Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Central 7, 1-1-1;Higashi, Tsukuba, Ibaraki 305-8567, Japan. E-mail: (IC) Department of Architecture, Faculty of Engineering, Tokyo University of Science, 1-3;Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan. E-mails: (TT);(YS) |