Animation of a Scenario M6.9 Earthquake on the Rose Canyon Fault

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Detailed Description

This video presents an animation of computer-simulated ground motions that might occur for a magnitude 6.9 earthquake rupturing the Rose Canyon fault in southern California. The scenario earthquake ruptures a 65-km-long section of the Rose Canyon fault that lies just offshore of San Diego, California, and Tijuana, Mexico. In this scenario, the rupture starts near the northern end of the fault and propagates to the south. The simulation uses a three-dimensional model of the earth’s crust to track the rupture, as well as to model the seismic waves that are radiated into the surrounding rocks. This simulation highlights the complex nature of seismic waves that are created during fault rupture, including the strong rupture directivity effects that would impact the densely populated areas near San Diego and Tijuana.
 

Details

Image Dimensions: 1345 x 757

Date Taken:

Length: 00:02:18

Location Taken: San Diego, CA, US

Video Credits

This ground motion simulation was computed using resources of the Blue Waters sustained-petascale computing project (https://bluewaters.ncsa.illinois.edu), which is supported by the National Science Foundation and the State of Illinois. These computational resources were accessed through an allocation provided to the Southern California Earthquake Center (https://www.scec.org). The visualization was generated using Generic Mapping Tools (https://gmt.soest.hawaii.edu) plotting software.

Produced by: The USGS Office of Communications and Publishing and the USGS Earthquake Science Center

Transcript

Computer Animation of a Scenario M6.9 Earthquake on the Rose Canyon Fault

Visualization by
Robert W. Graves

This video presents an animation of computer-simulated ground motions that might occur for a magnitude 6.9 earthquake rupturing the Rose Canyon fault in southern California. This simulation is designed to accompany the San Diego–Tijuana Earthquake Scenario exercise that is being coordinated by the San Diego Regional Chapter of the Earthquake Engineering Research Institute (https://sandiego.eeri.org).

The scenario earthquake ruptures a 65-km-long section of the Rose Canyon fault that lies just offshore of San Diego, California, and Tijuana, Mexico. In this scenario, the rupture starts near the northern end of the fault and propagates to the south. The simulation uses a three-dimensional model of the earth’s crust to track the rupture, as well as to model the seismic waves that are radiated into the surrounding rocks.

Although this simulation is just one of many possible realizations of what a rupture of the Rose Canyon fault might produce, it nonetheless highlights the complex nature of seismic waves that are created during fault rupture, including the strong rupture directivity effects that would impact the densely populated areas near San Diego and Tijuana.

Credits

This ground motion simulation was computed using resources of the Blue Waters sustained-petascale computing project (https://bluewaters.ncsa.illinois.edu), which is supported by the National Science Foundation and the State of Illinois. These computational resources were accessed through an allocation provided to the Southern California Earthquake Center (https://www.scec.org). The visualization was generated using Generic Mapping Tools (https://gmt.soest.hawaii.edu) plotting software.

Produced by

The USGS Office of Communications and Publishing and the USGS Earthquake Science Center

Suggested citation:

Graves, R.W., 2019, Computer animation of a scenario M6.9 earthquake on the Rose Canyon fault: U.S. Geological Survey video.

For more information, contact

Robert Graves
USGS Earthquake Science Center
Pasadena Field Office
525 South Wilson Ave.
Pasadena, CA 91106
rwgraves@usgs.gov