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U.S. Geological Survey Open-File Report 80–1173

Nuclear Event Time Histories and Computed Site Transfer Functions for Locations in the Los Angeles Region

By A.M. Rogers, P.A. Covington, R.B. Park, R.D. Borcherdt, and D.M. Perkins

Thumbnail of and link to report PDF (55.4 MB)Introduction

This report presents a collection of Nevada Test Site (NTS) nuclear explosion recordings obtained at sites in the greater Los Angeles, Calif., region. The report includes ground velocity time histories, as well as, derived site transfer functions. These data have been collected as part of a study to evaluate the validity of using low-level ground motions to predict the frequency-dependent response of a site during an earthquake.

For this study 19 nuclear events were recorded at 98 separate locations. Some of these sites have recorded more than one of the nuclear explosions, and, consequently, there are a total of 159, three-component station records. The location of all the recording sites are shown in figures 1–5, the station coordinates and abbreviations are given in table 1. The station addresses are listed in table 2, and the nuclear explosions that were recorded are listed in table 3. The recording sites were chosen on the basis of three criteria: (1) that the underlying geological conditions were representative of conditions over significant areas of the region, (2) that the site was the location of a strong-motion recording of the 1971 San Fernando earthquake, or (3) that more complete geographical coverage was required in that location.

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For additional information:
Contact Information, Earthquake Science Center, Menlo Park Science Center
U.S. Geological Survey
345 Middlefield Road, MS 977
Menlo Park, California 94025

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Suggested citation:

Rogers, A.M., Covington, P.A., Park, R.B., Borcherdt, R.D, and Perkins, D.M., 1980, Nuclear event time histories and computed site transfer functions for locations in the Los Angeles region: U.S. Geological Survey Open-File Report 80–1173, 206 p., available at



Data Collection and Processing

Spectral Analysis of the Signal

Spectral Analysis of the Noise

Computation of the Site Transfer Function


References Cited

3 appendixes

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