Earthquake Research Institute, University of Tokyo, 1-1 Yayoi-1, Bunkyo-ku, Tokyo, 113-0032 Japan ; Stanford University, Mitchell Building, Stanford University, Stanford, CA 94305 United States
Stanford University, Mitchell Building, Stanford University, Stanford, CA 94305 United States
Earthquake Research Institute, University of Tokyo, 1-1 Yayoi-1, Bunkyo-ku, Tokyo, 113-0032 Japan
Woods Hole Oceanographic Institution, Clark South 272A, Woods Hole, MA 02543 United States
Geographical Survey Institute, Kitasato-1, Tsukuba, Ibaraki, 305-0081 Japan