NASA Home Page Goddard Space Flight Center Home Page
NASA Logo - Goddard Space Flight Center   + Visit NASA.gov
a directory of Earth science data and services Global Change Master Directory Web site
header 2 bullet Links bullet FAQ bullet Contact Us bullet Site Map
Home Data Sets Data Services Learn about GCMD_legacy's portal collaborations. Add new dataset or dataservice records to GCMD_legacy What's New Participate Calendar About GCMD_legacy
 
Record Search Query: ServiceParameters>MODELS

Geophysical Finite Element Simulation Tool (GeoFEST)
Entry ID: GEOFEST
[ Get Service ]
[ Update this Record ]


Summary
Abstract: GeoFEST (Geophysical Finite Element Simulation Tool) is a two- and three-dimensional finite element software package for the modeling of solid stress and strain in geophysical and other continuum domain applications. GeoFEST uses stress-displacement finite elements to model stress and strain due to elastic static response to an earthquake event in the region of the slipping fault, the time-dependent viscoelastic relaxation, and the net effects from a series of earthquakes.

The program uses input and output in the form of formatted plain text files; the data formats can be adapted to accommodate visualization and graphically oriented i/o. The computational engine of the program employs Crout factorization for the direct inversion of the finite element matrices as well as conjugate gradient for an iterative solution option. The physics models supported by the code include isotropic linear elasticity and both Newtonian and power-law viscoelasticity, via implicit/explicit quasi-static time stepping. In addition to triangular, quadrilateral, tetrahedral and hexahedral continuum elements, the program supports split-node faulting, body forces and surface tractions. Capabilities under development include frictional faulting and buoyancy driving. Scientific applications of the code include the modeling of static and transient co- and post-seismic earth deformation, Earth response to glacial, atmospheric and hydrological loading, and other scenarios involving the bulk deformation of geologic media.

The program source is written in C, and is targeted to be compiled and run on UNIX systems, and on diverse UNIX derivatives including LINUX, HPUX, and SunOS.

Related URL
Link: GET SERVICE > GET SOFTWARE PACKAGE
Description: GeoFEST is available for download.

Link: VIEW RELATED INFORMATION
Description: QuakeSim information at NASA/JPL including GeoFEST
Service Citation
Originators: Caltech/Jet Propulsion Laboratory
Title: Geophysical Finite Element Simulation Tool (GeoFEST)
Provider: Open Channel Foundation
Edition: V. 4.8
URL: http://www.openchannelfoundation.org/projects/GeoFEST
ISO Topic Category
GEOSCIENTIFIC INFORMATION
Service Provider
Open Channel Foundation

Service Provider Personnel
Name: DOUGLAS CURRY
Phone: 773-334-8177
Fax: 773-334-8187
Email: info at openchannelfoundation.org
Contact Address:
Open Channel Foundation
1807 W. Sunnyside Avenue
Suite 301
City: Chicago
Province or State: Illinois
Postal Code: 60640
Country: USA
Distribution Media
Distribution_Media: Electronic-Download
Distribution_Size: 100.8 kb
Fees: None
Personnel
TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA

GREG LYZENGA
Role: TECHNICAL CONTACT
Email: lyzenga at aig.jpl.nasa.gov
Contact Address:
SCIGN Scientist
Satellite Geodesy and Geodynamics Systems Group
Jet Propulsion Laboratory
Country: USA
Creation and Review Dates
SERF Creation Date: 2003-06-11
SERF Last Revision Date: 2012-07-25
[ Update this Record ]
USA dot gov - The U.S. Government's Official Web Portal NASA
Webmaster:  Monica Lyles
Responsible NASA Official:  Dr. Stephen Wharton
Last Updated:  July 2015