{
"name":"haz/USpga250_2014",
"title":"haz/USpga250_2014",
"type":"Map Service",
"typeKeywords":["ArcGIS Server","Service","Map Service"],
"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 peak horizontal acceleration with a 2 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/",
"extent":[[-1.52929956084545E7,-5279087.5866202675],[3127963.3611142943,8206241.503241056]],

"url":"https://earthquake.usgs.gov/arcgis/rest/services/haz/USpga250_2014/MapServer"
}