The purpose of a site‐specific probabilistic seismic‐hazard analysis (PSHA) is to characterize the potential levels of ground shaking that could be experienced due to future earthquakes in the region. The output from such a PSHA, usually expressed in the form of acceleration response spectra at different annual frequencies of exceedance, may be used as the basis for earthquake‐resistant design, to check the seismic margins for an existing design, or as input to complete seismic probabilistic risk analysis. In a regulatory environment, such as for nuclear facilities, it is of particular importance to demonstrate confidence in the estimated levels of ground...
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