A methodology for probabilistic fault displacement hazard analysis (PFDHA)

Earthquake Spectra
By: , and 



We present a methodology for conducting a site-specific probabilistic analysis of fault displacement hazard. Two approaches are outlined. The first relates the occurrence of fault displacement at or near the ground surface to the occurrence of earthquakes in the same manner as is done in a standard probabilistic seismic hazard analysis (PSHA) for ground shaking. The methodology for this approach is taken directly from PSHA methodology with the ground-motion attenuation function replaced by a fault displacement attenuation function. In the second approach, the rate of displacement events and the distribution for fault displacement are derived directly from the characteristics of the faults or geologic features at the site of interest. The methodology for probabilistic fault displacement hazard analysis (PFDHA) was developed for a normal faulting environment and the probability distributions we present may have general application in similar tectonic regions. In addition, the general methodology is applicable to any region and we indicate the type of data needed to apply the methodology elsewhere.
Publication type Article
Publication Subtype Journal Article
Title A methodology for probabilistic fault displacement hazard analysis (PFDHA)
Series title Earthquake Spectra
DOI 10.1193/1.1542891
Volume 19
Issue 1
Year Published 2003
Language English
Publisher Earthquake Engineering Research INstitute
Description 29 p.
First page 191
Last page 219
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