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The 1868 Hayward Earthquake Alliance

The 1868 Hayward Earthquake Alliance. www.1868alliance.org. Oct. 21, 1868 Hayward Earthquake ( “ The Great SF Earthquake ” ). M7 Oct. 21, 1868 Hayward earthquake. 30 fatalities, 5 in San Francisco (12th most lethal US earthquake) $350,000 (in 1868 dollars) in damage in San Francisco alone

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The 1868 Hayward Earthquake Alliance

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  1. The 1868 Hayward EarthquakeAlliance www.1868alliance.org Oct. 21, 1868 Hayward Earthquake (“The Great SF Earthquake”)

  2. M7 Oct. 21, 1868 Hayward earthquake • 30 fatalities, 5 in San Francisco (12th most lethal US earthquake) • $350,000 (in 1868 dollars) in damage in San Francisco alone • Extensive damage in San Leandro, Hayward, and Fremont (total population less than 2000) • Bay Area population was 260,000 (it is now 27 times larger)

  3. Why commemorate its 140th anniversary on October 21, 2008?? Last 5 quakes on the Hayward Fault have been 140 years apart on average Lienkaemper and Williams, BSSA, in press, 2007

  4. Bancroft Library Settlement Reinstein Clothing Factory, 314 California St., San Francisco

  5. Updating the 1996 EERI Hayward Fault Scenario “I expect significant intraregional movement of people and therefore economic activity as a result of the disaster.” “We can expect ghost-towns throughout the East Bay, and we cannot automatically expect that HUD financing will be available to repair them.”

  6. Updating the 1996 EERI Hayward Fault Scenario Over 60% of EBMUD customers will be out of service immediately Over 75% of EBMUD customers will be out of service after 3 days Over 40% of EBMUD customers will be out of service after 9 days Over 15% of EBMUD customers will be out of service after 60 days 3000 to 5000 EBMUD pipe breaks, mainly caused by liquefaction If PG&E power is lost, EBMUD’s ability to replenish reservoirs is lost.

  7. Updating the 1996 EERI Hayward Fault Scenario If the earthquake occurs on a workday, at least 800,000 commuters out of the 3,000,000 total commuters will have to be transported back to where they want to be. 125,000 will need shelter due to damage to their residences (not just in the East Bay).

  8. Updating the 1996 EERI Hayward Fault Scenario In Alameda County, 33% of the hospital capacity will have to be evacuated, 33% will be in limited service, and 33% will be fully operational. In Contra Costa County, about 50% will be fully operational, 33% in limited service, and a small number evacuated. There might be 20,000 injuries requiring hospitalization and a total of only 10,000 beds available.

  9. www.1868alliance.org

  10. www.1868alliance.org

  11. 1868 Hayward Earthquake Alliance activities • Commemoration Events • Public Service Announcements • School earthquake drills • Hayward Fault exhibit • Teacher Tutorials • TV Specials • Hayward Fault Initiative (with EERI) • Scientific Workshops www.1868alliance.org

  12. earthquake.usgs.gov/regional/nca/1868/

  13. Examples of USGS Product Releases • 1868 ShakeMap • Animations of a Hayward Fault earthquake showing ground motions ala 1906 movies • 1868 Hayward Earthquake Virtual Tour • Hayward Fault in 3D • Hayward Fault Lidar Data

  14. Tentative Alliance Schedule Oct. 2007 - Kickoff Press Conference • Dec. 2007 - AGU special session on the 1868 quake • Spring 2008 - Reopen Hayward Fault exhibit?? • Spring/Fall 2008 - USGS Product Releases • Summer/Fall 2008 - Speaker Series • Oct. 21, 2008 - Commemoration Event • Oct. 2008 - USGS/CGS Scientific Workshop

  15. The 1868 Hayward EarthquakeAlliance www.1868alliance.org Join Us!

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