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Site-response maps for the Los Angeles region based on earthquake ground motions

Open-File Report 96-723

By:
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Abstract

Ground-motion records from aftershocks of the 1994 Northridge earthquake and main-shock records from the 1971 San Fernando, 1987 Whittier Narrows, 1991 Sierra Madre, and 1994 Northridge earthquakes are used to estimate site response in the urban Los Angeles, California, area. Two frequency bands are considered, 0.5-1.5 Hz and 2.0-6.0 Hz. Instrument characteristics prevented going to lower frequencies, and frequencies above 6.0 Hz are less important to the building inventory. Site response determined at the instrumented locations is associated with the surficial geology and contoured to produce a continuous spatial estimation of site response. The maps in this report are preliminary and will evolve as more data become available and more analysis is done.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Site-response maps for the Los Angeles region based on earthquake ground motions
Series title:
Open-File Report
Series number:
96-723
Edition:
-
Year Published:
1996
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
14 p. :maps (some col.) ;28 cm.