Magnitude 7 6 earthquake occurs offshore costa rica september 5 2012
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MAGNITUDE 7.6 EARTHQUAKE OCCURS OFFSHORE COSTA RICA September 5, 2012 PowerPoint PPT Presentation


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MAGNITUDE 7.6 EARTHQUAKE OCCURS OFFSHORE COSTA RICA September 5, 2012. Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA. CAUSE: INTERACTION OF THE COCOS, CARIBBEAN, AND SOUTH AMERICAN PLATES.

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MAGNITUDE 7.6 EARTHQUAKE OCCURS OFFSHORE COSTA RICA September 5, 2012

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MAGNITUDE 7.6 EARTHQUAKE OCCURS OFFSHORE COSTA RICASeptember 5, 2012

Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA


CAUSE: INTERACTION OF THE COCOS, CARIBBEAN, AND SOUTH AMERICAN PLATES


The strong quake, which occurred at 10:42 a.m. EDT, was centered under the Nicoya Peninsula of Costa Rica, 140 km (87 miles) west of the capital, San Jose


Seismologists have been predicting a strong quake in that area for years


GOOD NEWS—BAD NEWS ABOUT THE LOCATION

  • GOOD NEWS: The earthquake was deep [41 km, 25 mi].

  • BAD NEWS: The epicenter was 10km (6mi) northeast of Hojancha, Costa Rica and 140km (87mi) west of the capital city, San Jose


MORE GOOD NEWS: NO TSUNAMI

  • A tsunami warning was issued immediately for the Pacific coast of Costa Rica, Panama, Nicaragua, El Salvador, Honduras, Mexico, Columbia, Ecuador, Guatemala and Peru, and lifted after a few hours.


THE BEST NEWS

  • Damage, mortality, and morbidity were surprisingly light for two reasons: 1) the deep focal depth, and 2) the implementation of a modern building code with seismic provisions.


SOCIOECONOMIC IMPACTS

  • Costa Rica's National Emergency Commission reported debris on roads, power outages and some structural damage in homes, especially on the Nicoya Peninsula


SOCIOECONOMIC IMPACTS (continued)

  • Only one person died (a heart attack).

  • Red Cross ambulances evacuated patients from two damaged hospitals.


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