*Keisuke Sato¹, Shoichi Yoshioka^2,1, Hideo Aochi^3,4 (1.Graduate School of Science, Kobe University, 2.Research Center for Urban Safety and Security, Kobe University, 3.Ecole Normale Superieure Paris, Geological Laboratory, Paris, France, 4.Bureau de Recherches Geologiques et Minieres, Orleans, France)

*Keisuke Sato¹, Shoichi Yoshioka^2,1, Hideo Aochi^3,4 (1.Graduate School of Science, Kobe University, 2.Research Center for Urban Safety and Security, Kobe University, 3.Ecole Normale Superieure Paris, Geological Laboratory, Paris, France, 4.Bureau de Recherches Geologiques et Minieres, Orleans, France)

*Keisuke Sato¹, Shoichi Yoshioka^2,1, Hideo Aochi^3,4 (1.Graduate School of Science, Kobe University, 2.Research Center for Urban Safety and Security, Kobe University, 3.Ecole Normale Superieure Paris, Geological Laboratory, Paris, France, 4.Bureau de Recherches Geologiques et Minieres, Orleans, France)

*Keisuke Sato¹, Shoichi Yoshioka^2,1, Hideo Aochi^3,4 (1.Graduate School of Science, Kobe University, 2.Research Center for Urban Safety and Security, Kobe University, 3.Ecole Normale Superieure Paris, Geological Laboratory, Paris, France, 4.Bureau de Recherches Geologiques et Minieres, Orleans, France)