P UERTO RICO SEISMIC NETWORK Tsunami protocol for PR/VI - Caribbean a nd
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Transcript of P UERTO RICO SEISMIC NETWORK Tsunami protocol for PR/VI - Caribbean a nd
P UERTO RICO SEISMIC NETWORKTsunami protocol for PR/VI - Caribbean
andThe PR Broadcast System
Dr. Victor A. Huérfano
CARIBBEAN DISASTER EMERGENCY RESPONSE AGENCY1 Meeting of the join Project Coordinator Committee
ERCB, IDRC/ICT and TCHWS27/01/2009 Barbados
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The mission of the Puerto Rico Seismic Network (PRSN) is to rapidly determine the location and size of all earthquakes and tsunamis in the Area of Responsibility (AOR) and to immediately disseminate this information to concerned agencies, scientists, and the general public. PRSN compiles and maintains an extensive seismic database on earthquake parameters, continuous waveforms (earthquakes and sea level) and their effects which serve as a solid foundation for basic and applied earth science/oceanography research in Puerto Rico and the Caribbean.
The Puerto Rico Seismic Network mission
TSUNAMI WARNING CENTERS MESSAGE SUITE
(2008)
Warning Inundating wave possible Full evacuation suggested
Watch Danger level not yet known Stay alert for more info Advisory Strong currents likely Stay away from the shore Information Minor waves at most No action suggested
Warnings and advisories suggest that action must be taken Advisories can be upgraded to a warning or canceled Warning can be downgraded to an advisory or canceled
Tsunami Warning
A tsunami warning is issued when a potential tsunami with significant widespread inundation is imminent or expected.
Warnings alert the public that widespread, dangerous coastal flooding accompanied by powerful currents is possible and may continue for several hours after arrival of the initial wave.
Warnings also alert emergency management officials to take action for the entire tsunami hazard zone.
Appropriate actions to be taken by local officials may include the evacuation of low-lying coastal areas, and the repositioning of ships to deep waters when there is time to safely do so.
Warnings may be updated, adjusted geographically, downgraded, or canceled.
To provide the earliest possible alert, initial warnings are normally based only on seismic information.
Tsunami Watch
A tsunami watch is issued to alert emergency management officials and the public of an event which may later impact the watch area.
The watch area may be upgraded to a warning or advisory - or canceled - based on updated information and analysis.
Therefore, emergency management officials and the public should prepare to take action.
Watches are normally issued based on seismic information without confirmation that a destructive tsunami is underway.
Tsunami Advisory
A tsunami advisory is issued due to the threat of a potential tsunami which may produce strong currents or waves dangerous to those in or near the water.
Coastal regions historically prone to damage due to strong currents induced by tsunamis are at the greatest risk.
The threat may continue for several hours after the arrival of the initial wave, but significant widespread inundation is not expected for areas under an advisory.
Appropriate actions to be taken by local officials may include closing beaches, evacuating harbors and marinas, and the repositioning of ships to deep waters when there is time to safely do so.
Advisories are normally updated to continue the advisory, expand/contract affected areas, upgrade to a warning, or cancel the advisory.
Tsunami Information Statement
A tsunami information statement is issued to inform emergency management officials and the public that an earthquake has occurred, or that a tsunami warning, watch or advisory has been issued for another section of the ocean.
In most cases, information statements are issued to indicate there is no threat of a destructive tsunami and to prevent unnecessary evacuations as the earthquake may have been felt in coastal areas.
An information statement may, in appropriate situations, caution about the possibility of destructive local tsunamis.
Information statements may be re-issued with additional information, though normally these messages are not updated. However, a watch, advisory or warning may be issued for the area, if necessary, after analysis and/or updated information becomes available.
TSUNAMI WARNING CENTERS MESSAGE SUITE
(2008)Warning Inundating wave possible Full evacuation suggested Issued when forecasted or observed amplitude is over 1.0 m or procedures call for an immediate warning based on earthquake parametersWatch Danger level not yet known Stay alert for more info Issued to provide an early alert for areas that are distant from the wave front, but may have dangerAdvisory Strong currents likely Stay away from the shore When forecasted amplitudes are in the range 0.3 - 1.0 m, or observed amplitudes are in the range of 0.4 - 1.0 m. When inundating waves have lessened and are dangerous in or near water fronts only When procedures call for an immediate advisory based on earthquake parametersInformation Minor waves at most No action suggested Warnings and advisories suggest that action must be taken Advisories can be upgraded to a warning or canceled Warning can be downgraded to an advisory or canceled
Tsunami Warning Center - TWCarea-of-responsibilities.
Tsunami Warning Center - TWCarea-of-responsibilities.
Puerto Rico Seismic Network
TSUNAMI WARNING CENTER OPERATIONS
Seismic Stations
TSUNAMI WARNING CENTER OPERATIONS
Sea Level / DART Buoys
TSUNAMI WARNING CENTER OPERATIONS
Seismic Stations
TSUNAMI WARNING CENTER OPERATIONS
GOES
PRSN Tide Stations NOS Tide Stations
Tsunamis in the Atlantic
Earthquakes and Tsunamis in the Caribbean
Earthquakes and Tsunamis in the Caribbean
Earthquakes and Tsunamis in the Caribbean 1564
17871670
1943
2007
1974
1843
1946
1770
1918
18671969
LOCALEarthquake4.5 ≤ M ≤ 6.5
TsunamiInformationStatement
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
Tsunami Protocol for PR/VI
no
LOCALEarthquake4.5 ≤ M ≤ 6.5
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
LOCALEarthquake
M ≥ 6.5 H ≤ 100kmOr M ≥ 7.9
Or I ≥ VII MMOr TI ≥ V
yes
TsunamiWarningMessageno
Tsunami Protocol for PR/VI
LOCALEarthquake4.5 ≤ M ≤ 6.5
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
LOCALEarthquake
M ≥ 6.5 H ≤ 100kmOr M ≥ 7.9
yes
no
REGIONALEarthquake
6.0 ≤ M ≤ 7.5 Or M ≥ 7.6 and
H ≥ 100 orinland
yes
TsunamiInformationStatementTsunami Protocol
for PR/VI
no
LOCALEarthquake4.5 ≤ M ≤ 6.5
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
LOCALEarthquake
M ≥ 6.5 H ≤ 100kmOr M ≥ 7.9
yes
no
REGIONALWestern Earthquake
7.6 ≤ M ≤ 7.8yes
TsunamiInformationStatementTsunami Protocol
for PR/VI
no
LOCALEarthquake4.5 ≤ M ≤ 6.5
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
LOCALEarthquake
M ≥ 6.5 H ≤ 100kmOr M ≥ 7.9
yes
no
REGIONALEastern Earthquake
7.6 ≤ M ≤ 7.8Western Earthquake
M ≥ 7.9 and H ≤ 100 km
yes
TsunamiAdvisoryMessageTsunami Protocol
for PR/VI
no
LOCALEarthquake4.5 ≤ M ≤ 6.5
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
LOCALEarthquake
M ≥ 6.5 H ≤ 100kmOr M ≥ 7.9
yes
no
REGIONALEastern Earthquake
M ≥ 7.9 andH ≤ 100 km
yes
TsunamiWarningMessageTsunami Protocol
for PR/VI
no
LOCALEarthquake
PRSNNEICPTWC WC/ATWC
PR-SEMA
NWS
BVI-ODP
VITEMA
RegionalNetworks
yes
no
REGIONALEarthquake
yes
no
TeleseismicEarthquake Mag ≥ 7.9
yes
Tsunami Protocol for PR/VI
no
Observed or Forecasted
wave heights
yes
no
TsunamiInformationStatement
TsunamiAdvisoryMessage
PR-SEMA
NWS
BVI-ODP
VITEMA
LOCALEarthquake
PRSNNEICPTWC WC/ATWCRegionalNetworks
yes
no
REGIONALEarthquake
yes
no
TeleseismicEarthquake Mag ≥ 7.9
yes
Tsunami Protocol for PR/VI
no
No action
Tsunami Protocol for Caribbean
PTWC Messages
Tsunami Warning Dissemination (24/7)
1. Internet Email service list Dedicated client programs Web pages (TWC, NEIC, PRSN, ITIC..) Text messages2. Emergency Alert System (EAS)3. Reverse 9114. NOAA Weather Radio 5. Sirens6. VSAT satellite7. EMWIN GOES linkOther systems unique to area
Dedicated Internet Client programs
Dedicated Internet Client programs
Tsunami Ready Program
• “Grass roots” program that promotes tsunami hazard readiness.
• Collaborative effort between government, academia and the public.
• Improve public safety during tsunami emergencies.• Prepares communities for tsunami hazard.• Create minimum standard community guidelines for
adequate tsunami readiness. • Increase public awareness and understanding of tsunami
hazard.• Improve community pre-planning for tsunami disasters.• Encourage consistency in educational materials and
response. • Recognize communities that have adopted Tsunami Ready
guidelines
Working Together to Save Lives
QUESTIONS ?