*Chi-Hsien Tang^1,2、Ya-Ju Hsu²、Yutaro Okada¹、Yusaku Ohta³、Takeshi Sagiya⁴、Pei-Ru Jian⁵、Yoshiaki Tamura⁶、Takaaki Jike⁶ (1.International Research Institute of Disaster Science, Tohoku University、2.Institute of Earth Sciences, Academia Sinica、3.Graduate School of Science, Tohoku University、4.Disaster Mitigation Research Center, Nagoya University、5.Department of Geosciences, National Taiwan University、6.Mizusawa VLBI Observatory, National Astronomical Observatory of Japan)