Report GIRS 2022-05: Reverse Fault PFDHA

(Revised on January 17, 2024)

By: Robb Moss; Stephen Thompson; Chun-Hsiang Kuo; Kourosh Younesi; David Baumont
DOI: 10.34948/N3F595

Abstract: This report covers research on a probabilistic fault displacement hazard analysis (PFDHA) model for reverse faulting events. The goal was to provide the tools needed to estimate surface fault rupture displacements for reverse faults within a hazard forecasting framework. This model supersedes previous models and includes: revised relationships between magnitude and maximum/average displacement, revised distributions of principal displacement along fault strike, improved distributions of principal displacement exceedance. The addition of distributed displacement models, and improved coding of the PFDHA methodology for hazard calculation.