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The 1868 Hayward EarthquakeAlliancewww.1868alliance.orgOct. 21,
1868 Hayward Earthquake (The Great SF Earthquake)
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M7 Oct. 21, 1868 Hayward earthquake30 fatalities, 5 in San
Francisco (12th most lethal US earthquake)$350,000 (in 1868
dollars) in damage in San Francisco aloneExtensive damage in San
Leandro, Hayward, and Fremont (total population less than 2000)Bay
Area population was 260,000 (it is now 27 times larger)
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Lienkaemper and Williams, BSSA, in press, 2007Why commemorate
its 140th anniversary on October 21, 2008??Last 5 quakes on the
Hayward Fault have been 140 years apart on average
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Bancroft LibraryReinstein Clothing Factory, 314 California St.,
San FranciscoSettlement
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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.
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Updating the 1996 EERI Hayward Fault Scenario
Over 60% of EBMUD customers will be out of service
immediatelyOver 75% of EBMUD customers will be out of service after
3 daysOver 40% of EBMUD customers will be out of service after 9
daysOver 15% of EBMUD customers will be out of service after 60
days3000 to 5000 EBMUD pipe breaks, mainly caused by
liquefaction
If PG&E power is lost, EBMUDs ability to replenish
reservoirs is lost.
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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).
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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.
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www.1868alliance.org
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www.1868alliance.org
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1868 Hayward Earthquake Alliance activitiesCommemoration
EventsPublic Service AnnouncementsSchool earthquake drillsHayward
Fault exhibitTeacher TutorialsTV SpecialsHayward Fault Initiative
(with EERI)Scientific Workshops
www.1868alliance.org
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earthquake.usgs.gov/regional/nca/1868/
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Examples of USGS Product Releases1868 ShakeMap Animations of a
Hayward Fault earthquake showing ground motions ala 1906 movies1868
Hayward Earthquake Virtual TourHayward Fault in 3DHayward Fault
Lidar Data
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Tentative Alliance Schedule Oct. 2007 - Kickoff Press Conference
Dec. 2007 - AGU special session on the 1868 quakeSpring 2008 -
Reopen Hayward Fault exhibit??Spring/Fall 2008 - USGS Product
ReleasesSummer/Fall 2008 - Speaker SeriesOct. 21, 2008 -
Commemoration EventOct. 2008 - USGS/CGS Scientific Workshop
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The 1868 Hayward EarthquakeAlliancewww.1868alliance.orgJoin
Us!