Affiliation: | Mail Stop;D443, Geological Engineering Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA Meteorological Research Institute, Nagamine;1–1, Tsukuba-Shi, Ibaraki-ken 305, Japan Geophysical Institute, Faculty of Science, Tohoku University, Aoba-ku, Sendai-shi;980, Japan National Research Institute for Earth Science and Disaster Prevention, Tennodai;3- 1, Tsukuba-shi, Ibaraki-ken 305, Japan |