HR: 0800h
AN: S21A-0231    [Abstracts]
TI: A Virtual Tour of the 1868 Hayward Earthquake in Google Earth^TM
AU: * Lackey, H G
EM: hlackey@usgs.gov
AF: United States Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025, United States
AU: Blair, J L
EM: lblair@usgs.gov
AF: United States Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025, United States
AU: Boatwright, J
EM: boat@usgs.gov
AF: United States Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025, United States
AU: Brocher, T
EM: brocher@usgs.gov
AF: United States Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025, United States
AB: The 1868 Hayward earthquake has been overshadowed by the subsequent 1906 San Francisco earthquake that destroyed much of San Francisco. Nonetheless, a modern recurrence of the 1868 earthquake would cause widespread damage to the densely populated Bay Area, particularly in the east Bay communities that have grown up virtually on top of the Hayward fault. Our concern is heightened by paleoseismic studies suggesting that the recurrence interval for the past five earthquakes on the southern Hayward fault is 140 to 170 years. Our objective is to build an educational web site that illustrates the cause and effect of the 1868 earthquake drawing on scientific and historic information. We will use Google Earth^TM software to visually illustrate complex scientific concepts in a way that is understandable to a non-scientific audience. This web site will lead the viewer from a regional summary of the plate tectonics and faulting system of western North America, to more specific information about the 1868 Hayward earthquake itself. Text and Google Earth^TM layers will include modeled shaking of the earthquake, relocations of historic photographs, reconstruction of damaged buildings as 3-D models, and additional scientific data that may come from the many scientific studies conducted for the 140^th anniversary of the event. Earthquake engineering concerns will be stressed, including population density, vulnerable infrastructure, and lifelines. We will also present detailed maps of the Hayward fault, measurements of fault creep, and geologic evidence of its recurrence. Understanding the science behind earthquake hazards is an important step in preparing for the next significant earthquake. We hope to communicate to the public and students of all ages, through visualizations, not only the cause and effect of the 1868 earthquake, but also modern seismic hazards of the San Francisco Bay region.
DE: 7212 Earthquake ground motions and engineering seismology
DE: 7299 General or miscellaneous
SC: Seismology [S]
MN: 2007 Fall Meeting