On seismic hazards/risk and power plant design
The basic premise of probabilistic seismic hazard analysis (PSHA) is to calculate the probability of exceeding various levels of ground motions at a site of interest. We must assess (1) the possible sources of earthquakes that might affect ground motions at the site, (2) the maximum magnitude earthquakes that each source is capable of generating, (3) the recurrence rate of earthquakes of all magnitudes up to themaximum on each source; and (4) the attenuation of strong ground motions as a function of source to site distance and magnitude. These four basic elements in the PSHA methodologies have not changed significantly from C.A. Cornell`s original work, but some specific details about individual steps involved in the PSHA applications have been improved over the last 20 years. What has changed dramatically in recent years has been our scientific ability to estimate those physical quantities in the PSHA elements above with more confidence and to quantify more appropriately the uncertainties associated with the input parameters of these basic elements.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10134607
- Report Number(s):
- UCRL-ID-110822; ON: DE93009454
- Resource Relation:
- Other Information: PBD: May 1992
- Country of Publication:
- United States
- Language:
- English
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