HR: 17:40h
AN: NG12D-06 INVITED     [PDF]
TI: GeoFramework: A Modeling Framework for Solid Earth Geophysics
AU: * Gurnis, M
EM: gurnis@caltech.edu
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Aivazis, M
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Tromp, J
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Tan, E
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Thoutireddy, P
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Liu, Q
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Choi, E
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Dicaprio, C
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Chen, M
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Simons, M
AF: Seismo. Lab. & Center for Advanced Computer Research, Caltech, Pasadena, CA 91125 United States
AU: Quenette, S
AF: VPAC, RMIT, Melbourne, VIC 3053 United States
AU: Appelbe, B
AF: VPAC, RMIT, Melbourne, VIC 3053 United States
AU: Aagaard, B
AF: USGS, So. Wilson Blvd., Pasadena, CA 91125 United States
AU: Williams, C
AF: Earth & Enviromental Sci., RPI, Troy, NY 12180 United States
AU: Lavier, L
AF: UTIG, Univ. of Texas, Austin, TX 78759 United States
AU: Moresi, L
AF: School of Mathematical Sci., Monash Univ., Clayton, VIC 3800 Australia
AU: Law, H
AF: School of Geosciences, Sydney University, Sydney, NSA 2006 Australia
AB: As data sets in geophysics become larger and of greater relevance to other earth science disciplines, and as earth science becomes more interdisciplinary in general, modeling tools are being driven in new directions. There is now a greater need to link modeling codes to one another, link modeling codes to multiple datasets, and to make modeling software available to non modeling specialists. Coupled with rapid progress in computer hardware (including the computational speed afforded by massively parallel computers), progress in numerical algorithms, and the introduction of software frameworks, these lofty goals of merging software in geophysics are now possible. The GeoFramework project, a collaboration between computer scientists and geoscientists, is a response to these needs and opportunities. GeoFramework is based on and extends Pyre, a Python-based modeling framework, recently developed to link solid (Lagrangian) and fluid (Eulerian) models, as well as mesh generators, visualization packages, and databases, with one another for engineering applications. The utility and generality of Pyre as a general purpose framework in science is now being recognized. Besides its use in engineering and geophysics, it is also being used in particle physics and astronomy. Geology and geophysics impose their own unique requirements on software frameworks which are not generally available in existing frameworks and so there is a need for research in this area. One of the special requirements is the way Lagrangian and Eulerian codes will need to be linked in time and space within a plate tectonics context. GeoFramework has grown beyond its initial goal of linking a limited number of exiting codes together. The following codes are now being reengineered within the context of Pyre: Tecton, 3-D FE Visco-elastic code for lithospheric relaxation; CitComS, a code for spherical mantle convection; SpecFEM3D, a SEM code for global and regional seismic waves; eqsim, a FE code for dynamic earthquake rupture; SNAC, a developing 3-D coded based on the FLAC method for visco-elastoplastic deformation; SNARK, a 3-D FE-PIC method for viscoplastic deformation; and gPLATES an open source paleogeographic/plate tectonics modeling package. We will demonstrate how codes can be linked with themselves, such as a regional and global model of mantle convection and a visco-elastoplastic representation of the crust within viscous mantle flow. Finally, we will describe how http://GeoFramework.org has become a distribution site for a suite of modeling software in geophysics.
UR: http://GeoFramework.org
DE: 3200 MATHEMATICAL GEOPHYSICS (New field)
DE: 3210 Modeling
SC: Nonlinear Geophysics [NG]
MN: 2003 Fall Meeting