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Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ250

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Publication Date
Time Period
1999
File Modification Date
2013-05-16 14:06:26

Summary

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 years. This particulardata set is for horizontal spectral response acceleration for 0.2 secondperiod with a 2% probability of exceedance in 50 years. All ofthe maps were prepared by combining hazard derived from spatially-smoothed historic seismicity with 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 averageshear-wave velocity of 760 m/sec in the top 30 meters corresponding [...]

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5HZ250.xml
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14.69 KB application/fgdc+xml

Purpose

This map is intended to summarize the available quantitativeinformation about seismic ground motion hazard in Alaska from geologicand geophysical sources.
Page-size, condensed version of horizontal spectral response accelerationfor 0.2 second period with a 2% probability of exceedance in 50 yearsfor Alaska and the Aleutian Islands
Page-size, condensed version of horizontal spectral response accelerationfor 0.2 second period with a 2% probability of exceedance in 50 yearsfor Alaska and the Aleutian Islands

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Added to Sciencebase on Sat Nov 16 13:18:49 MST 2013 by processing URL <b>5HZ250.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/4f4e4771e4b07f02db47e1e3">https://www.sciencebase.gov/catalog/item/4f4e4771e4b07f02db47e1e3</a> <br />

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processingUrl http://sciencebase.org/metadata/geo-nsdi.er.usgs.gov/metadata/map-i/2679/5HZ250.xml

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