HR: 0800h
AN: SF41A-0752    [Abstracts]
TI: GeoFramework: Coupling multiple models of mantle convection within a computational framework
AU: * Tan, E
EM: tan2@gps.caltech.edu
AF: Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125 United States
AU: Choi, E
EM: ces74@gps.caltech.edu
AF: Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125 United States
AU: Thoutireddy, P
EM: puru@cacr.caltech.edu
AF: Center for Advanced Computing Research, California Institute of Technology, Pasadena, CA 91125 United States
AU: Gurnis, M
EM: gurnis@gps.caltech.edu
AF: Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125 United States
AU: Aivazis, M
EM: aivazis@cacr.caltech.edu
AF: Center for Advanced Computing Research, California Institute of Technology, Pasadena, CA 91125 United States
AB: Geological processes usually encompass a broad spectrum of length and time scales. Traditionally, a modeling code (solver) is developed for a problem of specific length and time scales, but the utility of the solver beyond the designated purpose is usually limited. As we have come to recognize that geological processes often result from the dynamic coupling of deformation across a wide range of time and spatial scales, more robust methods are needed. One means to address this need is through the integration of complementary modeling codes, while attempting to reuse existing software as much as possible. The GeoFramework project addresses this by developing a suite of reusable and combinable tools for the Earth science community. GeoFramework is based on and extends Pyre, a Python-based modeling framework, developed to link solid (Lagrangian) and fluid (Eulerian) solvers, as well as mesh generators, visualization packages, and databases, with one another for engineering applications. Under the framework, a solver is aware of the presence of other solvers and can interact with each other via exchanging information across adjacent mesh boundary. We will show an example of linking two instances of the CitcomS finite element solver within GeoFramework. A high-resolution regional mantle convection model is linked with a global mantle convection model. The global solver has a resolution of $\sim180$ km horizontally and 35-100 km (with mesh refinement) vertically. The fine mesh has a resolution of $\sim40$ km horizontally and vertically. The fine mesh is center on the Hawaii hotspot. A vertical plume is used as an initial condition. Time-varying plate velocity models are imposed since 80 Ma and we have investigated how the plume conduit is deflected by the global circulation patterns as a function of mantle viscosity, plume flux, and plate motion.
UR: http://geoframework.org
DE: 8121 Dynamics, convection currents and mantle plumes
SC: Special Focus: Advances in Data Acquisition, Management, Analysis and Display [SF]
MN: 2004 AGU Fall Meeting