*Satoshi Matsumoto¹, Yuta Kawamura¹, Tomomi Okada², Miu Matsuno², Yoshihisa Iio³, Rick Sibson⁴, Martha Savage⁵, Kenny Graham⁵, Manami Suzuki ², Stephen Bannister⁶ (1.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 2.Graduate of Science, Tohoku University, 3.Disaster Prevention Research Institute, Kyoto University, 4.Department of Geology, University of Otago, 5.Victoria Univesity of Wellington, 6.GNS Science)