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snippet:
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Horizontal Spectral Response Acceleration for 1.0-second Period with 2% Probability of Exceedance in 50 Years (1999)
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summary:
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Horizontal Spectral Response Acceleration for 1.0-second Period with 2% Probability of Exceedance in 50 Years (1999)
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extent:
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[[-179.999988540289,48.4595039039792],[179.999988541187,71.3904820642696]]
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accessInformation:
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US Geological Survey National Seismic Hazard Mapping Program
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thumbnail:
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thumbnail/thumbnail.png
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typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"]
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description:
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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 1.0-second period 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.er.usgs.gov/publication/i2679,
http://pubs.er.usgs.gov/publication/ofr9936, and
http://earthquake.usgs.gov/hazards/
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licenseInfo:
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catalogPath:
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title:
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AK 1Hz 2% in 50 years
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type:
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Map Service
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url:
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tags:
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["earthquake","hazard","1Hz","1.0-second","seismic","Alaska"]
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culture:
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en-US
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name:
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AK1hz250_1999
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guid:
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93B7D739-A056-423D-BAB5-CB4B21888501
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spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere
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