Anomalous record of October 15, 1979, Imperial Valley, California, earthquake from Coachella Canal Engine House No. 4

Open-File Report 82-317
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Abstract

A recording obtained at the Coachella Canal Engine House No. 4 of the October 15, 1979, Imperial Valley earthquake shows a dominant 2 Hz frequency. This feature is very unusual and an attempt has been made to determine if the recording is real or spurious. As the pumping station is a small heavily constructed bunker type of structure located on material of low shear wave velocity it was considered likely that soil-structure interaction might be responsible for the 2 Hz component. However, both an experimental and theoretical investigation fail to establish this. This report describes the theoretical investigation. The experimental investigation is described in a separate open-file report.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Anomalous record of October 15, 1979, Imperial Valley, California, earthquake from Coachella Canal Engine House No. 4
Series title Open-File Report
Series number 82-317
DOI 10.3133/ofr82317
Edition -
Year Published 1981
Language ENGLISH
Publisher U.S. Geological Survey,
Description 14 p., ill. ;28 cm.