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Scalable visualization using grids (Image 1)

Simulation showing ground wave action as shock waves travel under the ocean

A simulation showing ground wave action as shock waves travel under the ocean while passing Catalina Island (in blue, upper right). This view is from an underground level looking south. This simulation, known as TeraShake, used the new 10 teraflop DataStar supercomputer and large-scale data resources of the San Diego Supercomputer Center (SDSC) at the University of California, San Diego.

Distributed interactive volume browsing with the grid visualization utility using the Globus Toolkit and a point sampling technique to accelerate exploration of very large datasets. Showing the Terashake 2.1 simulation depicting a velocity wavefield as it propagates through the 3-D velocity structure beneath Southern California. The warmer red and yellow colors indicate regions of compression, while the cooler blue and green colors show regions of dilation. Faint yellow (faults), red (roads) and blue (coastline) lines add geographical context.

Areas of this research are supported by National Science Foundation grant EAR 01-22464, "The SCEC Community Modeling Environment (SCEC/CME): An Information Infrastructure for System-level Earthquake Research," and grant ANI 02-25642, "The OptiPuter Project: A Powerful Distributed Cyberinfrastructure to Support Data-Intensive Scientific Research and Collaboration." The OptIPuter is a computing paradigm in which dynamically controllable optical networks become the system bus that connects cluster computers as if they were giant peripherals in a planetary-scale computer. The SCEC award is to develop computing capabilities to better forecast when and where earthquakes are likely to occur in Southern California and how the ground will shake as a result, and to develop the ability for scientists to improve computer models of how the Earth is structured and how the ground moves during earthquakes. For more information, visit the SCEC website. (Date of Image: July 2006) [Image 1 of 3 related images. See Image 2.]

Credit: Marcus Thiebaux, Information Sciences Institute, University of Southern California
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