Differential-ground-motion array at Hollister Municipal Airport, California
This report describes the differential array of seismometers recently installed at the Hollister, California, Municipal Airport. Such an array of relatively closely spaced seismometers has already been installed in El Centro and provided useful information for both engineering and seismological applications from the 1979 Imperial Valley earthquake. Differential ground motions, principally due to horizontally propagating surface waves, are important in determining the stresses in such extended structures as large mat foundations for nuclear power stations, dams, bridges and pipelines. Further, analyses of the records of the 1979 Imperial Valley earthquake from the differential array have demonstrated the utility of short-baseline array data in tracking the progress of the rupture wave front of an earthquake. 5 refs., 4 figs.
- Research Organization:
- Geological Survey, Menlo Park, CA (USA)
- OSTI ID:
- 5174966
- Report Number(s):
- USGS-OFR-83-327; ON: TI86900057
- Country of Publication:
- United States
- Language:
- English
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