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FaultMod

June 29, 2026

FaultMod is finite-element software whose main application is 3D spontaneous dynamic rupture models of earthquakes. It is designed to be very flexible. Models can include a variety of fault geometries (planar fault, curved fault, multiple faults, branched faults, rough faults, etc.), a variety of friction laws (slip weakening, time weakening, rate-and-state, thermal pressurization, etc.), and a variety of material constitutive properties (elastic, viscous, plastic, viscoplastic, etc.). Parameters can vary with position in 3D space in any desired way. FaultMod has built-in finite-element mesh generators, and supports multiple element shapes (hexahedron, tetrahedron, wedge, pyramid). Additionally, there are multiple output drivers to produce modeling outputs in various formats.

Publication Year 2026
Title FaultMod
DOI 10.5066/P14MGULF
Authors Michael Barall
Product Type Software Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Earthquake Science Center
Rights This work is marked with CC0 1.0 Universal
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