USstates arcL8

Probabilistic seismic-hazard maps were prepared for the conterminous United States portraying 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. This particular data set is for horizontal spectral response acceleration for 1.0-second period with a 10 percent probability of exceedance 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. The acceleration values contoured are the random horizontal component. The reference site condition is firm rock, defined as having an average shear-wave velocity of 760 m/sec in the top 30 meters corresponding to the boundary between NEHRP (National Earthquake Hazards Reduction program) site classes B and C.

For more information online visit: http://pubs.usgs.gov/sim/3195/, http://pubs.usgs.gov/of/2008/1128/, and http://earthquake.usgs.gov/hazards/

Data and Resources

Additional Info

Field Value
Source http://disasters.amerigeoss.org/datasets/8c5677ee1ef04456ae7ae6e4fb66f440_59
Last Updated August 8, 2019, 09:54 (CDT)
Created August 8, 2019, 09:54 (CDT)
GUID http://disasters.amerigeoss.org/datasets/8c5677ee1ef04456ae7ae6e4fb66f440_59
Language
dcat_issued 2018-03-13T20:19:04.000Z
dcat_modified 2018-11-09T02:45:09.000Z