Name of program: 3D-DEF

Type of program (eg quake model, mesh generator, strain calculator, visualizer, etc): Elastic dislocation boundary-element calculator

Author : Joan Gomberg (USGS, Memphis) and Michael Ellis (CERI, Univ. Memphis),

3D-DEF was written by Joan Gomberg (USGS, Memphis) and Michael Ellis (CERI, Univ. Memphis), and performs elastic dislocation boundary-element calculations. Boundary elements permit one to examine, for example, how a fault will slip in response to applied stresses. Unlike finite element codes, little or no gridding is needed. The program enables a variety of boundary conditions to be applied, which makes the model quite flexible. It is supplemented by a limited number of simple Matlab routines that enable graphic visualizations of results. 3D-DEF is a stand-alone program built around the Okada (1992) Green's functions, and runs on any computer with a fortran compiler. All input and output is in ascii files.

The program and manual can be obtained via anonymous ftp to ftp://beagle.ceri.memphis.edu/pub/gomberg.