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Earthquake Shaking— Find the ’Hotspots’
Released: 1/16/2001

Contact Information:
U.S. Department of the Interior, U.S. Geological Survey
Office of Communication
119 National Center
Reston, VA 20192
Pat Jorgenson 1-click interview
Phone: 650-329-4011

In conjunction with the seventh anniversary of the 1994, 6.7 Northridge earthquake, the U.S. Geological Survey, in cooperation with the Southern California Earthquake Center (SCEC) and the National Science Foundation (NSF), has produced a two-page fact sheet that explains how geologic conditions in the Los Angeles basin affect the amount of shaking experienced by various areas of the basin.

The fact sheet is the result of a five-year study by SCEC researchers, including USGS scientists, to determine which areas of southern California are likely to experience higher levels of shaking in future earthquakes. One graphic shows that shaking levels double from the edge of the Los Angeles basin, where the sediments are thin, to the middle of the basin, in the heart of Los Angeles, where soft sediments reach a depth of four miles.

The fact sheet, which includes downloadable color images, is available at http://geopubs.wr.usgs.gov/fact-sheet/fs001-01/.

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