Deborah Lyman Kilb, Scripps Institution of Oceanography, La Jolla, CA, United States, Elizabeth S Cochran, Earthquake Science Center, U.S. Geological Survey, Pasadena, CA, United States, Julian Bunn, California Institute of Technology, Pasadena, CA, United States, Sarah E Minson, US Geological Survey, Earthquake Science Center, Menlo Park, CA, United States, Annemarie Baltay, U.S. Geological Survey, Menlo Park, CA, United States, Mitsuyuki Hoshiba, Meteorological Res. Inst./JMA, Tsukuba, Japan and Yuki Kodera, Meteorological Research Institute, Japan Meteorological Agency, Ibaraki, Japan