Animation of simulated ground motion after a possible magnitude 8 earthquake on the San Andreas fault, showing ground shaking throughout southern California for more than 75 seconds after the rupture initiates near Parkfield. The Ventura, Los Angeles, and San Bernardino areas continue to shake due to reverberation within their underlying soft sedimentary basins.

"Petascale simulations such as this one are needed to understand the rupture and wave dynamics of the largest earthquakes, at shaking frequencies required to engineer safe structures," said Thomas Jordan, Director of the Southern California Earthquake Center.
San Diego Supercomputer Center (SDSC) researchers provided the high-performance computing and scientific visualization expertise for the simulation. Scientific details of the earthquake were developed by scientists at San Diego State University (SDSU). Ohio State University (OSU) researchers were also part of the collaborative effort to improve the efficiency of the software involved.

At the 2010 Supercomputer Conference in New Orleans, this animation was selected as a Gordon Bell Prize finalist.

Simulation: Yifeng Cui, Kim Olsen, Thomas Jordan, Kwangyoon Lee, jun Zhou, Patrick Small, Daniel Roten, Geoffrey Ely, Dhabaleswar Panda, John Levesque, Steve Day, Philip Maechling

Visualization: Amit Chourasia

                              San Diego Supercomputer Center
                              San Diego State University
                              University of Southern California
                              The Ohio State University
                              Cray Inc.

Computation Platform: Jaguar, Oak Ridge National Laboratory


                              NSF and DOE (INCITE Program)
                              Base Map and DEM courtesy of Geoffrey Ely

Southern California Earthquake Center
High Performance GeoComputing Lab, San Diego Supercomputer Center
Visualization Services, San Diego Supercomputer Center 


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