Preface Table of Contents Geologic Hazards

USGS Response to an Urban Earthquake -- Northridge '94

Document Preparation Information


This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

This document was prepared under the guidance of the Post-Earthquake Investigations Program of the Earthquake Hazards Reduction Act. This Act requires that the four agencies participating in the National Earthquake Hazards Reduction Program (NEHRP) to carry out post-earthquake investigations programs to learn lessons that can be applied to reduce the loss of lives and property in future earthquakes. Specifically, the Federal Emergency Management Agency (FEMA), the National Science Foundation (NSF), the National Institute of Standards and Technology (NIST), and the U.S. Geological Survey (USGS) are required to organize investigations to study the implications of the earthquake in the areas of responsibility of each agency. The USGS is charged with the responsibility of organizing these investigations, and each agency is given specific roles according to that agencyÕs mission and expertise.

This document reports specifically on the scientific work done by the U.S. Geological Survey following the Northridge, California, earthquake of January 17, 1994. This work was accomplished according to an Interagency Agreement among the four NEHRP agencies signed on March 14, 1994, that listed the post-earthquake Tasks of each agency.

USGS Response to an Urban Earthquake Northridge 94


Prepared by the U.S. Geological Survey for the Federal Emergency Management Agency (FEMA)
Open-File Report 96-263 1996

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Denver, Colorado 80225-0046
Scientific Communications Group
Central Region Geologic Hazards Team
Golden, Colorado

Randall G. Updike, Chief Scientist
William M. Brown III Eleanor M. Omdahl Susan Rhea
Margo L. Johnson Philip S. Powers Arthur C. Tarr


Scientific and Technical Contributors:
Jim Mori, Southern California Regional Coordinator


For further information, please contact:

U.S. Geological Survey


U.S. Geological Survey


U.S. Geological Survey

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