The US Geological Survey recently released new seismic-hazard mapsus Seismic hazard map

for the conterminous U.S.  The six map sheets portray “peak horizontal acceleration and horizontal spectral response acceleration for 0.2- and 1.0-second periods with probabilities of exceedance of 10 percent in 50 years and 2 percent in 50 years. All of the maps were prepared by combining the hazard derived from spatially smoothed historic seismicity with the hazard from fault-specific sources.”

Citation: Petersen et al, 2011,  Seismic-Hazard Maps for the Conterminous United States, 2008, USGS Scientific Investigation Map 3195.

Mike Conway (2 January 2011)