tsunamis in puerto rico:tsunamis in puerto rico · 2016. 8. 31. · tsunamis in puerto...
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Tsunamis in Puerto Rico:Tsunamis in Puerto Rico: A Real ThreatA Real Threat
Rotary Club of San Juan
Geologist Christa G von Hillebrandt Andrade MScGeologist Christa G. von Hillebrandt-Andrade, MScManager
NOAA Caribbean Tsunami Warning Programc/o Puerto Rico Seismic Network
Dept. of Geology, UPR-Mayagüez
March 2, 2010
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HawaiiTerremoto de Alaska, 1964
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Chile and its
Tsunamis
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Haiti Earthquake and TsunamiqJan. 12, 2010, Mw 7.0, > 200,000 dead (EQ)
The tsunami took the lives of at least seven villagers in the town of Petit Paradis onvillagers in the town of Petit Paradis, on Haiti's western coast.
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Samoa Islands TsunamiSeptember 29 2009September 29, 2009
Mw 8.0, Max. Runup: 16.3 m
Fotos por Gordon Yamasaki , NOAA192 dead in American Samoa and Samoa
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So are we Next?So are we Next?
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1918 Tsunami in Puerto RicoM 7 3 EQ 20 ft Max Wave HeightM 7.3 EQ, 20 ft. Max. Wave Height,
First Arrival 1 minute
Damage in Mayagüez, PuertoRico
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Tsunamis in the CaribbeanTsunamis in the Caribbean
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Tsunami deaths since 1842 in two key areas, the northeastern Pacific (Alaska, Hawaii, West Coast St t ) & th C ibb B i (i l d P tStates) & the Caribbean Basin (includes Puerto
Rico & US Virgin Islands). The Caribbean basin with only 1/5 the area has 6x more deaths !
1842-2010:3510 d th3510+ deaths
1842-2010: 579 deaths
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Caribbean Tsunamigenic Sources, M tl h t f dMostly short-fused
• Local and RegionalRegional Earthquakes
• Subaerial and SubmarineSubmarine Landslides
• Subaerial V lVolcanoes-Soufriere Hills, Montserrat
• Submarine Volcanoes-Kick ‘em Jennyy
• Tele-tsunami (e.g. “Lisbon” Nov. 1, 1755)
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The risk from tsunamis has increased dramatically due to population growth, coastal infrastructure due to popu at o g o t , coasta ast uctu e
development and tourism
US Virgin Islands, 1867
US Virgin Islands, today
During high season, there can be as many as 25,000 people arriving on cruise shipsduring a day. During low season, as much as 15,000 people/day.
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T iTsunami Evacuation Maps p
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Current Tsunami Warning Service P idProviders
• Pacific Tsunami Warning CenterP id I t i T i W i G id S i– Provides Interim Tsunami Warning Guidance Service to the non US Caribbean and adjacent regions
• West Coast and Alaska Tsunami Warning C tCenter– Provides Interim Warning Service to Puerto Rico and
the USVI (US Government)– Backup to the PTWC
• Puerto Rico Seismic NetworkProvides 24 x 7 tsunami warning service to Puerto– Provides 24 x 7 tsunami warning service to Puerto Rico and the USVI and BVI (local governments protocol)
• Caribbean Tsunami Warning Center (in• Caribbean Tsunami Warning Center (in development phase)
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Communications and Dissemination
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Natural Warning Signs of a Tsunami
• Very strong earth shaking objects fallingVery strong earth shaking, objects falling off shelves, walls cracking
• Very long (> 1 minute) ground shaking• Very long (> 1 minute) ground shaking• Water suddenly recedes or rises (over the
f i t t h )course of minutes, not hours)• Strange noises from the sea
At any of these signs, run for high groundfor high ground INMEDIATELY
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Evacuate to SafetyEvacuate to Safety
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NOAA TsunamiReady DesignationsNOAA TsunamiReady Designations• 24 hour tsunami
warning reception andwarning reception and dissemination pointL l• Local emergency response plan
• Signage• Evacuation Mapp• Education and
outreach activitiesoutreach activities, including drills
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LANTEX 2010LANTEX 2010• Tsunami generated by a magnitude 7.5 earthquake with
epicenter at 40ºN, 70ºW (off coast of Massachussets) occurring on March 24, 2010 at 1300UTC.
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Our Mission: Avoid this…
NY TimesThank you very much
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More informationMore information…• PRSN
– http://redsismica.uprm.edu• NOAA Tsunami Site• NOAA Tsunami Site
– http://tsunami.gov• PRTWMP website with tsunami inundation maps
– http://poseidon.uprm.edu• UNESCO IOC Caribe EWS
Thanks for your support and attention