Affiliation: | Institute of Solid Earth Physics, Allégt. 41, University of Bergen, 5007 Bergen, Norway;Laboratory for Ocean Bottom Seismology, Hokkaido University, Sapporo 060, Japan;Earthquake Research Institute, Tokyo University, Yoyoi 1-1-1, Tokyo 113, Japan;Laboratory for Earthquake Chemistry, Tokyo University, 7-3-1 Hongo, Tokyo 113, Japan |