Subsurface site conditions and geology in the San Fernando earthquake area
The report presents the progress to date in establishing the facts about dynamic subsurface properties and geological features in the area affected by the San Fernando earthquake of February 9, 1971. Special emphasis is given to the locations of accelerographs, seismoscopes and Seismological Field Survey aftershock instruments. Thirty shallow geophysical surveys were made for determination of S and P velocities, with damping measured at some sites. Deep velocity data were obtained from geophysical surveys by others. Soil Mechanics and water well borings by others were utilized. Published and ongoing geological studies were applied. Results are presented in the form of five geological cross-sections, nine subsurface exploration models extending through basement complex to depths of 14,000 feet, a general geologic map, the shallow geophysical surveys, and selected data on damping.
- Research Organization:
- California Univ., Los Angeles (USA). School of Engineering and Applied Science
- OSTI ID:
- 7211791
- Report Number(s):
- UCLA-ENG-7206
- Country of Publication:
- United States
- Language:
- English
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