National Research Institute for Earth Science / Graduate School / Seismological Society of Japan / Japanese Society for Planetary Sciences / Tomomi Okada Research Center for Prediction of Earthquakes and Volcanic Eruptions / Disaster Prevention / Earthquake Research Committee / Geodetic Society of Japan / Japanese government / National Research Institute for Earth Science and Disaster Prevention / Volcanological Society of Japan / Tokyo Institute of Technology / Tohoku University / Sendai / Global Education and Research Center for Earth and Planetary Dynamics / Society of Geomagnetism / /