1. Earthquake Science Center, U.S. Geological Survey, Moffett Field, CA, USA.
2. National Earthquake Information Center, Geological Hazards Science Center, U.S. Geological Survey, Golden, CO, USA.
3. University of Washington, Seattle, WA, USA.
4. Lamont-Doherty Earth Observatory, Palisades, NY, USA.
5. University of North Carolina Wilmington, Wilmington, NC, USA.
6. Scripps Institution of Oceanography, La Jolla, CA, USA.
7. Stuttgart University, Stuttgart, Germany.
8. Alaska Science Center, U.S. Geological Survey, Anchorage, AK, USA.
9. Michigan State University, East Lansing, MI, USA.