Tomofumi Kozono¹, Masato Iguchi², Takahiro Miwa³, Masayuki Maki⁴, Takeshi Maesaka³ and Daisuke Miki², (1)Tohoku University, Department of Geophysics, Graduate School of Science, Sendai, Japan, (2)Kyoto University, Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kagoshima, Japan, (3)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (4)Kagoshima University, Research and Education Center for Natural Hazards, Kagoshima, Japan