*Yuko Kondo¹, Masayuki Obayashi², Hiroko Sugioka¹, Hajime Shiobara³, Aki Ito², Masanao Shinohara³, Hikaru Iwamori³, Masataka Kinoshita³, Matthew Miller⁴, Carlos Tassara⁴, Javier Ojeda⁵ (1.Kobe University, 2.JAMSTEC, 3.Earthquake Research Institute, University of Tokyo, Japan, 4.Concepcion University, Chile, 5.Departamento de Geofísica, Universidad de Chile, Chile)