Scientific Investigations Map 3195
AbstractProbabilistic 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. 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/s in the top 30 meters corresponding to the boundary between NEHRP (National Earthquake Hazards Reduction program) site classes B and C. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.05 degrees in latitude and longitude. The grid of points were contoured to produce the final representation of the seismic-hazard. These maps are intended to summarize the available quantitative information about seismic ground motion hazard for the conterminous United States from geologic and geophysical source. ^{1}U.S. Geological Survey |
First posted December 27, 2011
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Petersen, M.D., Frankel, A.D., Harmsen, S.C., Mueller, C.S., Haller, K.M., Wheeler, R.L., Wesson, R.L., Zeng, Yuehua, Boyd, O.S., Perkins, D.M., Luco, Nicolas, Field, E.H., Wills, C.J., and Rukstales, K.S., 2011, Seismic-Hazard Maps for the Conterminous United States, 2008: U.S. Geological Survey Scientific Investigations Map 3195, 6 sheets, scale 1: 7,000,000.
SIM3195_sheet1.pdf--map of peak horizontal acceleration with 10% probability of exceedance in 50 years
SIM3195_sheet2.pdf--map of peak horizontal acceleration with 2% probability of exceedance in 50 years
SIM3195_sheet3.pdf--map of horizontal spectral response acceleration for 0.2-second period with 10% probability of exceedance in 50 years
SIM3195_sheet4.pdf--map of horizontal spectral response acceleration for 0.2-second period with 2% probability of exceedance in 50 years
SIM3195_sheet5.pdf--map of horizontal spectral response acceleration for 1.0-second period with 10% probability of exceedance in 50 years
SIM3195_sheet6.pdf--map of horizontal spectral response acceleration for 1.0-second period with 2% probability of exceedance in 50 years
SIM3195-1.zip
SIM3195-2.zip
SIM3195-3.zip
SIM3195-4.zip
SIM3195-5.zip
SIM3195-6.zip