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Probabilistic earthquake acceleration and velocity maps for the United States and Puerto Rico

January 1, 1990

The ground-motion maps presented here (maps A-D) show the expected seismic induced or earthquake caused maximum horizontal acceleration and velocity in rock in the contiguous United States, Alaska, Hawaii, and Puerto Rico.  There is a 90 percent probability that the maximum horizontal acceleration and velocity shown on the maps will not be exceeded in the time periods of 50 and 250 years (average return period for the expected ground motion of 474 and 2,372 years).  Rock is taken here to mean material having a shear-wave velocity of between 0.75 and 0.90 kilometers per second. (Algermissen and Perkins, 1976).  

Publication Year 1990
Title Probabilistic earthquake acceleration and velocity maps for the United States and Puerto Rico
DOI 10.3133/mf2120
Authors S. T. Algermissen, D. M. Perkins, P. C. Thenhaus, S.L. Hanson, B.L. Bender
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Miscellaneous Field Studies Map
Series Number 2120
Index ID mf2120
Record Source USGS Publications Warehouse
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