{ "culture": "en-US", "name": "US5hz050_2008", "guid": "3D251853-0546-4EAB-81A5-6F7EAB2BF0A9", "catalogPath": "", "snippet": "Horizontal Spectral Response Acceleration for 0.2-second Period with 10% Probability of Exceedance in 50 Years (2008)", "description": "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 0.2-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.\n\nFor more information online visit:\nhttp://pubs.usgs.gov/sim/3195/,\nhttp://pubs.usgs.gov/of/2008/1128/, and \nhttp://earthquake.usgs.gov/hazards/", "summary": "Horizontal Spectral Response Acceleration for 0.2-second Period with 10% Probability of Exceedance in 50 Years (2008)", "title": "US 5Hz 10% in 50 years", "tags": [ "earthquake", "hazard", "5Hz", "0.2-second", "seismic" ], "type": "Map Service", "typeKeywords": [ "Data", "Service", "Map Service", "ArcGIS Server" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "extent": [ [ -179.147340000274, 17.8812419997711 ], [ 179.778465000033, 71.3904820642696 ] ], "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere", "accessInformation": "US Geological Survey National Seismic Hazard Mapping Program", "licenseInfo": "" }