Institution: | Building Research Institute, Tsukuba, Ibaraki 305-0802,;Japan. E-mail: Meteorological Research Institute, Tsukuba, Ibaraki, 305-0052,;Japan Faculty of Science, Ryukyu University, Okinawa, 903-0129,;Japan Wakayama Seismological Observatory, Earthquake Research Institute, Tokyo University, Wakayama, 642-0035,;Japan Disaster Prevention Research Institute, Kyoto University, Uji, Kyoto 611-0011,;Japan |