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  "Title": "AK 5Hz 10% in 50 years",
  "Author": "Ken Rukstales (rukstales@usgs.gov)",
  "Comments": "Probabilistic seismic-hazard maps were prepared for Alaska 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.er.usgs.gov/publication/i2679,\nhttp://pubs.er.usgs.gov/publication/ofr9936, and \nhttp://earthquake.usgs.gov/hazards/\n",
  "Subject": "Horizontal Spectral Response Acceleration for 0.2-second Period with 10% Probability of Exceedance in 50 Years (1999)",
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  "Keywords": "earthquake,hazard,5Hz,0.2-second,seismic,Alaska"
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