Test of two methods for faulting on finite-difference calculations
Tests of two fault boundary conditions show that each converges with second order accuracy as the finite-difference grid is refined. The first method uses split nodes so that there are disjoint grids that interact via surface traction. The 3D version described here is a generalization of a method I have used extensively in 2D; it is as accurate as the 2D version. The second method represents fault slip as inelastic strain in a fault zone. Offset of stress from its elastic value is seismic moment density. Implementation of this method is quite simple in a finite-difference scheme using velocity and stress as dependent variables.
Citation Information
Publication Year | 1999 |
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Title | Test of two methods for faulting on finite-difference calculations |
DOI | 10.1785/BSSA0890040931 |
Authors | D. J. Andrews |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Bulletin of the Seismological Society of America |
Index ID | 70021934 |
Record Source | USGS Publications Warehouse |