HR: 0800h
AN: IN21B-0484    [Abstracts]
TI: Development of a Web Based Simulating System for Earthquake Modeling on the Grid
AU: * Seber, D
EM: seber@sdsc.edu
AF: San Diego Supercomputer Center, University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093, United States
AU: Youn, C
EM: cyoun@sdsc.edu
AF: San Diego Supercomputer Center, University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093, United States
AU: Kaiser, T
EM: tkaiser@sdsc.edu
AF: San Diego Supercomputer Center, University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093, United States
AB: Existing cyberinfrastructure-based information, data and computational networks now allow development of state- of-the-art, user-friendly simulation environments that democratize access to high-end computational environments and provide new research opportunities for many research and educational communities. Within the Geosciences cyberinfrastructure network, GEON, we have developed the SYNSEIS (SYNthetic SEISmogram) toolkit to enable efficient computations of 2D and 3D seismic waveforms for a variety of research purposes especially for helping to analyze the EarthScope's USArray seismic data in a speedy and efficient environment. The underlying simulation software in SYNSEIS is a finite difference code, E3D, developed by LLNL (S. Larsen). The code is embedded within the SYNSEIS portlet environment and it is used by our toolkit to simulate seismic waveforms of earthquakes at regional distances (<1000km). Architecturally, SYNSEIS uses both Web Service and Grid computing resources in a portal-based work environment and has a built in access mechanism to connect to national supercomputer centers as well as to a dedicated, small-scale compute cluster for its runs. Even though Grid computing is well-established in many computing communities, its use among domain scientists still is not trivial because of multiple levels of complexities encountered. We grid-enabled E3D using our own dialect XML inputs that include geological models that are accessible through standard Web services within the GEON network. The XML inputs for this application contain structural geometries, source parameters, seismic velocity, density, attenuation values, number of time steps to compute, and number of stations. By enabling a portal based access to a such computational environment coupled with its dynamic user interface we enable a large user community to take advantage of such high end calculations in their research and educational activities. Our system can be used to promote an efficient and effective modeling environment to help scientists as well as educators in their daily activities and speed up the scientific discovery process.
UR: http://portal.geongrid.org/synseis/
DE: 0525 Data management
DE: 0545 Modeling (4255)
DE: 7200 SEISMOLOGY
SC: Earth and Space Science Informatics [IN]
MN: 2007 Fall Meeting