Seismic Hazard Map
Magnitude 4.6 WESTERN AUSTRALIA
Friday, May 20, 2011 at 20:03:27 UTC
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
