[unav_all] Workshop on Community Finite Element Models for Fault Systems and Tectonic Studies

Mark Simons simons at gps.caltech.edu
Mon May 16 11:33:58 MDT 2005

The 4th annual "Workshop on Community Finite Element Models for Fault 
Systems and Tectonic Studies" will take place on July 11 through 14 at 
Los Alamos National Laboratory (LANL). Formal meetings will go through 
noon on July 14, with facilities available after that time for informal 
collaborations. This workshop will serve as a venue to discuss progress 
in numerical modeling of lithospheric deformation, benchmarking existing 
codes, and defining the challenges that need to be met for future 
software development. This workshop is open to all interested, 
especially members of the SCEC, EarthScope, and NASA modeling 
communities. Partial financial support is already being provided by or 
sought from SCEC, LANL, NSF, CIG, and NASA.

This workshop will have a "hands-on" emphasis. The main goal of the 
workshop will be to leave the workshop knowing how to do more with basic 
tools than before the workshop. This will be done by using Southern 
California and Benchmarks as examples for using the next generation of 
crustal deformation modeling tools. There will continue to be a focus on 
the meshing problem, including learning how to use LAGriT and CUBIT. 
Introductions and tutorials for GeoFest and PyLith (aka. Lithomop) will 
take place, as well as discussions of other codes being used for 
modeling lithospheric deformation. We will address what it takes to get 
these up and running, what can they do, and how can they be modified. 
Running on clusters or the GRID is crucial, and we will move in that 

Another priority is the comparison of results for a small number of 
benchmark problems to verify codes and to their strengths and 
weaknesses. For the FEM models, the effects of irregular computational 
meshes are being explored. The models will eventually be extended to 
include postseismic relaxation for viscoelastic and rate-state friction. 
The ability to accurately model body forces will be investigated by 
considering test problems with explicit topography. Primary goals of 
this benchmarking exercise are to assess accuracy/basis 
function/parallelism issues, and to separately assess 
commercial/SCEC-written options for both mesh generation and solver. 
This exercise will be designed to learn what mesh generation techniques 
are available, as well as their relative strengths and weaknesses.

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Dr. Mark Simons		
Seismological Laboratory
Division of Geological and Planetary Sciences
252-21 Caltech		
Pasadena CA 91125

Tel: 626/395-6984
Fax: 626/564-0715
WWW: http://www.gps.caltech.edu/~simons
E-Mail: simons at caltech.edu

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