president’s proposed expansion of tsunami warning system eddie bernard director, pacific marine...
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President’s Proposed Expansion of Tsunami Warning System
Eddie Bernard Director, Pacific Marine Environmental
Laboratory (PMEL)/NOAA Member, National Tsunami Hazard
Mitigation Program
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CPPT
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Improving U.S. preparedness for tsunamis:
• The Administration will commit $37.5 million over the next two years to expand U.S. tsunami detection and monitoring capabilities
(NOAA-$24M: USGS-$13.5M)• The National Oceanic and Atmospheric
Administration (NOAA) will deploy 32 new advanced-technology Deep-ocean Assessment and Reporting of Tsunami (DART) buoys for a fully operational enhanced tsunami warning system by mid-2007.
• The United States Geological Survey (USGS) will enhance its seismic monitoring and information delivery from the Global Seismic Network, a partnership with the National Science Foundation.
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• Adding deep-sea buoys and other sensors to enhance tsunami detection along the U.S. coast (Pacific, Atlantic, Caribbean, and the Gulf of Mexico).
• Working internationally to build a global warning system, including in the Indian Ocean.
• Improving seismic sensor data and infrastructure for better earthquake detection and warning, including in the Caribbean.
• Expanding research on tsunami forecasting.• Improving response capacity with enhanced
emergency warning systems community response plans, and public education.
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U.S. PLAN FOR AN IMPROVED TSUNAMI DETECTION AND
WARNING SYSTEM
Improve Warnings and Forecasts
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Proposed U.S. Tide Gauge Network
New Tsunami-Equipped Tide Stations (FY 05-06)
Existing Stations New Stations
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Proposed U.S. DART Network
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Animation
DART ConceptDART ConceptDART ConceptDART Concept
BPR measures small changes in BPR measures small changes in pressure at the seafloor. Data pressure at the seafloor. Data sent acoustically to surface sent acoustically to surface buoy, then via satellite to the buoy, then via satellite to the Warning Centers. Warning Centers.
Normal transmissionsNormal transmissions: Hourly : Hourly reporting of 15 minute data to reporting of 15 minute data to confirm system readiness. confirm system readiness.
Two Event ModesTwo Event Modes::
- - AutomaticAutomatic: Triggered by : Triggered by seismic or tsunami waveseismic or tsunami wave
- - RequestRequest: Warning Center : Warning Center triggers data streamtriggers data stream
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Requested DART Data: December 27,2004Requested DART Data: December 27,2004
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Operational Tsunami ForecastingOperational Tsunami Forecasting
• • Essential to Improve Warning Speed and ReliabilityEssential to Improve Warning Speed and Reliability
• • Vast Ocean Areas with Vast Ocean Areas with No Tsunami MeasurementsNo Tsunami Measurements
• • Must Integrate Real-time Must Integrate Real-time MeasurementMeasurement and and ModelingModeling
- Measurement:- Measurement: DART Network DART Network
- Modeling:- Modeling: Tsunami Forecast ModelTsunami Forecast Model
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Tsunami ForecastingMeasurement Requirements
1. Measurement type - tsunami amplitude over time for input into forecast models
2. Measurement accuracy - 0.5 cm
3. Measurement sample rate – 1 min or less
4. Measurement processing – within 2 min
5. Measurement availability – within 5 minutes to assimilate into forecast models
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Elements of Tsunami ForecastingElements of Tsunami Forecasting
• Use propagation models to generate a simulation
database
• When tsunami occurs, select from database as “first
estimate”
• Assimilate deep ocean data to update database from “first
estimate” to “offshore tsunami forecast”
• Use “offshore tsunami forecast” as input for inundation
model at specific site
• Inundation model produces tsunami forecast at specific
site
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Model databaseModel database
Unit sources for pre-computed tsunami propagation scenarios
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November 17, 2003 Tsunami:DART Data Used to Update Simulation
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Real Time Detection of November 17, 2003 Tsunami
Real Time Detection of November 17, 2003 Tsunami
Tsunami
TsunamiTsunami
Seismic
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Nested Models Telescope Grid from 4000m to 25m
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Tsunami Forecast at HiloNovember 17, 2003
Tsunami Forecast at HiloNovember 17, 2003
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Model Standards PaperModel Standards Paper
Progress in National Tsunami Hazard Mitigation Program Hazard Assessment
F.I. Gonzalez, V.V. Titov, H.O. Mofjeld, A.J. Venturato, R.S. Simmons, R.Hansen, R.Combellick, R.K.Eisner, D.F. Hoirup, B.S. Yanagi, S.Young, M.Darienzo, G.R. Priest, G.L. Crawford, T. J. Walsh
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Forecast Model to Hazard Mapping Plan
• Combine real time seismic, sea level monitoring networks coupled with numerical models to produce tsunami forecast products for 74 sites
• Make models available to states to produce inundation maps
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Potential GEOSS International Tsunami Warning Network
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International Modeling NetworkInternational Modeling NetworkTransfer, Maintain, and Improve Tsunami Forecast ModelsTransfer, Maintain, and Improve Tsunami Forecast Models
Under DevelopmentUnder Development
Network Nodes Share: Models, R&D Tools, Databases, …Network Nodes Share: Models, R&D Tools, Databases, …
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29 - Pacific Basin (excludes 3 redundant Alaska Buoys)
6 - Atlantic/Caribbean
1 - Mid-Atlantic Ridge
Location of DART buoys (deployed along subduction zones: 1000 km spacing)
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Credit:Dr. Jose BorreroUSC,USA
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NOAA Tsunami Warning CentersNOAA Tsunami Warning CentersOPERATIONAL ACTIVITIESOPERATIONAL ACTIVITIES
• SEISMIC DATA COLLECTION & SEISMIC DATA COLLECTION & ANALYSESANALYSES
• SEA LEVEL MEASUREMENTSSEA LEVEL MEASUREMENTS
• DECISION-MAKING PROCESSESDECISION-MAKING PROCESSES
• MESSAGE CREATION & DISSEMINATIONMESSAGE CREATION & DISSEMINATION
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Cascadia
Sumatra Credit: Lori Dengler
1000 km
1000 km
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U.S. PLAN FOR AN IMPROVED TSUNAMI DETECTION AND
WARNING SYSTEM
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