1. Pacific Geoscience CentreGeological Survey of Canada Sidney British Columbia Canada
2. International Seismological Centre Thatcham UK
3. Mengcheng National Geophysical Observatory, School of Earth and Space SciencesUniversity of Science and Technology of China Hefei China
4. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of ScienceTohoku University Sendai Japan
5. Department of GeosciencesPennsylvania State University University Park PA USA