the 2004 sumatra tsunami and u.s. tsunami preparedness harold mofjeld noaa/pmel and noaa tsunami...
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The 2004 Sumatra Tsunami andThe 2004 Sumatra Tsunami and U.S. Tsunami Preparedness U.S. Tsunami Preparedness
Harold Mofjeld NOAA/PMEL and NOAA
Tsunami Research Program
Seattle, Washington
Harold Mofjeld NOAA/PMEL and NOAA
Tsunami Research Program
Seattle, Washington
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ObjectivesObjectives
By the end of this session you should be able to:
• Help citizens identify tsunami warning signs and actions they should take
• Describe the tsunami warning system and tsunami preparedness programs
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PollPoll
Do you know the natural warning signs of a tsunami?
o Yes
o No
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Warnings Signs of TsunamiWarnings Signs of Tsunami
• Earthquake, ground shaking
• Water withdrawing from shoreline
• Sound like freight train coming from ocean
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Center of Excellence in Disaster Management and Humanitarian Assistance Emergency Report : January 8, 2005
Estimated damage: $13.6 B
Estimated damage: $13.6 B
2004 Sumatra Tsunami Damage2004 Sumatra Tsunami Damage
Estimated death toll: 150,000+
Estimated death toll: 150,000+
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Northeast Indian Ocean TectonicsNortheast Indian Ocean Tectonics
Sou
rce:
US
GS
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USGS Shake MapUSGS Shake Map
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Vasily Titov NOAA/PMELVasily Titov NOAA/PMEL
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Tide Gages: Maximum Wave AmplitudeTide Gages: Maximum Wave Amplitude
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Two Hours After the EarthquakeTwo Hours After the Earthquake
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Thailand Tsunami SurveyThailand Tsunami Survey
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Wave Height in ThailandWave Height in Thailand
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Khoa Lak, ThailandKhoa Lak, Thailand
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Tsunamis in the Pacific NorthwestTsunamis in the Pacific Northwest
Three Different Types:
– Trans-Pacific Tsunamis
– Cascadia Regional Tsunamis
– Local Puget Sound Tsunamis
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Peak Ground Acceleration Peak Ground Acceleration
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Puget Sound TsunamisPuget Sound Tsunamis
Cascadia SZ
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U.S. National Tsunami U.S. National Tsunami Hazard Mitigation ProgramHazard Mitigation Program
GoalReduce the impact oftsunamis on UScoastal communities
StatesAlaska California Hawaii Oregon Washington
Federal Agencies
• National Oceanic and Atmospheric Admin.
• U.S. Geological Survey
• Federal Emergency Management Agency
Frank González, NOAA TIME Center, PMEL, Seattle, WA
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Deep-ocean Assessment Deep-ocean Assessment and Reporting of Tsunamis (DART)and Reporting of Tsunamis (DART)
• BPR measures changes in pressure at seafloor
• Data sent to surface buoy, then to the warning centers by satellite
• Transmissions limited to hourly reporting of 15 minute data
• When seismic/ tsunami wave detected, system put into alert mode for continuous reporting
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Rockaway Beach Evacuation MapRockaway Beach Evacuation Map
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Tsunami signs in Tsunami signs in Rockaway Beach, ORRockaway Beach, OR
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Tsunami Warnings for Pacific StatesTsunami Warnings for Pacific States
• Alaska
• California
• Hawaii
• Oregon
• Washington
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PollPollWhat is the best time to help residents identify tsunami warning signs and what actions to take?
A. Now
B. Periodically
C. All of the above
D. None of the above
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Questions?Questions?