Numerical modeling of dynamic rupture propagation is a well-established technique in investigations of large tectonic earthquakes. We develop a methodology to integrate that technique with the modeling of fluid flow in deformable porous media to study properties of the fault zones and the stress state in the subsurface. We perform the analysis of May 17, 2012 Mw4.8 Timpson, TX earthquake. We build a simplified geologic model and run the suite of simulations. We find that even in unfavorable orientation of maximum horizontal stress relative to fault strike, the fault can slip if it was critically stressed initially. We also find that more complex stress states and fault zone properties than depth-dependent-only ones are needed to reproduce the Mw 4.8 earthquake.
Presentation Date: Wednesday, September 18, 2019
Session Start Time: 1:50 PM
Presentation Time: 4:45 PM
Presentation Type: Oral