*Lincoln Paul Alcantara Olayta^1,3、Yo Fukushima^2,1、Augusto Ronald Pigtain³ (1.Graduate School of Science, Tohoku University、2.International Research Institute of Disaster Science (IRIDeS), Tohoku University, Tohoku, Japan、3.Philippine Institute of Volcanology & Seismology (PHIVOLCS), Department of Science & Technology, Philippines)