*Hong Peng¹、Stephen Wu^1,2、Masumi Yamada³ (1.Research Organization of Information and Systems, The Institute of Statistical Mathematics, Tachikawa, 190-8562, Japan、2.The Graduate University for Advanced Studies, Department of Statistical Science, Tachikawa, 190-8562, Japan、3.Kyoto University, Research Division of Earthquake Disasters, Disaster Prevention Research Institute, Uji, 611-0011, Japan)