The determination of design earthquakes, ground motions and response spectra based on seismic risk analyses including geologic evidence is discussed in general and illustrated with results for an example site in the Los Angeles Harbor area. The site was underlain by approximately 300 feet of very dense sand and located about one mile from the Palos Verdes fault and about 7 miles from the Newport-Inglewood fault. The probability analyses included three seismic resk models with earthquake data records based on instrumental magnitudes, felt intensities and geologic evidence. Emphasis is placed on the importance of historic earthquake data records based on geologic evidence. The fault risk model gave about 50 percent higher ground accelerations than the regional or area seismicity based on instrumental records. /Author/

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 231-271

Subject/Index Terms

Filing Info

  • Accession Number: 00179749
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM