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USGS Animations Simulate Intense Ground Shaking During Hayward Quake
Released: 10/9/2008 7:25:35 AM

Contact Information:
U.S. Department of the Interior, U.S. Geological Survey
Office of Communication
119 National Center
Reston, VA 20192
Leslie  Gordon 1-click interview
Phone: 650-329-4006

Paul Laustsen 1-click interview
Phone: 650-329-4046

Barry Zepel
Phone: 510-885-3884 off. 510-589-8939 cell

In partnership with: CA State University East Bay, Hayward Earthquake Alliance

New 3-D animations of the way ground in the Bay Area will shake during large earthquakes on the Hayward Fault are being unveiled for the media on October 14th.

These new computer animations will help engineers, first responders, Bay Area decision-makers and residents prepare for an earthquake similar to the 1868 Hayward Fault earthquake, an event that was named "the Great San Francisco Earthquake" until the devastating earthquake of 1906. The animations show the expected ground shaking from Hayward Fault earthquakes ranging from magnitude 6.8 to 7.2.

The new animations show how the underlying geology and geologic variations in the Bay Area have a strong influence on the intensity and pattern of shaking. Homes, businesses, schools and other essential infrastructure built in areas underlain by soft sediments are at significantly greater risk during intense ground shaking. The results from these simulations are being made available for use in engineering studies and emergency response planning in preparation for the next big earthquake


USGS Earthquake Scientists

  •  David Schwartz, Geologist, Co-Chair of the 1868 Hayward Earthquake Alliance
  •  Brad Aagaard, Geophysicist, Developer of animated quake simulations

Risk Management Solutions

  •  Mary Lou Zoback, Vice President, Earthquake Risk Applications, will present results of loss calculations based on USGS quake simulation

Earthquake Engineering Research Institute, Northern California Chapter

  •  Keith Knudsen, Geologist, with URS Corporation, and an Alliance Steering Committee member, will provide information about earthquake risk-reduction, best practices and successful mitigation programs.


10:00 a.m., Tuesday, October 14, 2008


New University Union Bldg, Oakland Room 2002A

California State University East Bay (CSUEB)

25800 Carlos Bee Boulevard, Hayward, CA 94542-3004

  •  A map of the CSUEB campus showing the press conference location at the lower right (New Union Bldg, Oakland Room 2002A, near the southern end of campus)
  •  Driving instructions
  •  Park in Parking Lot B (directly across street from New Univ. Union and south of the Warren Hall tower)   or park in the adjacent soccer field. Arrive early for the best spots.
  •  Public Transit to CSUEB.


With the 140th anniversary of the 1868 Hayward earthquake on October 21, the U. S. Geological Survey (USGS) is providing information that to prepare the public for a magnitude 6.7 or larger earthquake likely to happen in the greater Bay Area in the next 30 years. This anniversary reflects an important milestone: the past 5 large earthquakes on the Hayward Fault have been on average about 140 years apart, so a repeat of this powerful earthquake could happen at any time.

In addition to public commemoration events http://1868alliance.org/, a scientific conference about earthquakes in the eastern San Francisco Bay will be held October 22-24 on the California State University, East Bay campus.

Audio Bridge:

For those unable to attend the press conference in person, there will be an audio bridge. Call 650-329-5199. Enter conference code 1868, followed by #.

USGS provides science for a changing world. For more information, visit www.usgs.gov.

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