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

Miscellaneous Field Studies Map 2120

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Abstract

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).  

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Probabilistic earthquake acceleration and velocity maps for the United States and Puerto Rico
Series title:
Miscellaneous Field Studies Map
Series number:
2120
ISBN:
0607820454
Year Published:
1990
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
2 Plates: 35.51 x 44.93 inches and 28.17 x 41.93 inches
Country:
United States
Scale:
7500000
Online Only (Y/N):
N
Additional Online Files (Y/N):
N