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M7.2 EARTHQUAKE STRIKES VAN PROVINCE IN EASTERN TURKEY 1:41 PM (6:41 AM EDT), OCTOBER 23, 2011

M7.2 EARTHQUAKE STRIKES VAN PROVINCE IN EASTERN TURKEY 1:41 PM (6:41 AM EDT), OCTOBER 23, 2011. Dr. Walter Hays Global Alliance For Disaster Reduction. PRELIMINARY REPORTS: THE DEPTH OF THE EARTHQUAKE WAS 20 KM (12 MI), RELATIVELY SHALLOW , AND, THEREFORE, MORE DESTRUCTIVE.

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M7.2 EARTHQUAKE STRIKES VAN PROVINCE IN EASTERN TURKEY 1:41 PM (6:41 AM EDT), OCTOBER 23, 2011

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  1. M7.2 EARTHQUAKE STRIKES VAN PROVINCE IN EASTERN TURKEY1:41 PM (6:41 AM EDT), OCTOBER 23, 2011 Dr. Walter Hays Global Alliance For Disaster Reduction

  2. PRELIMINARY REPORTS:THE DEPTH OF THE EARTHQUAKE WAS 20 KM (12 MI), RELATIVELY SHALLOW, AND, THEREFORE, MORE DESTRUCTIVE

  3. PRELIMINARY REPORTS:25 COLLAPSED APARTMENT BUILDINGS, STUDENT DORMOTORIES, AND BUILDINGS WITH TRAPPED SURVIVORSMANY DEADURGENT NEED FOR MEDICS

  4. COLLAPSED BUILDINGS: TABALANI

  5. DISASTERS FACED BY TURKEY FLOODS GOAL: DISASTER RESILIENCE EARTHQUAKES TSUNAMIS DEVELOP PARTNERSHIPS FOR ACTIONS HAVING HIGH BENEFIT/COST FOR TURKEY AND THE REGION LANDSLIDES DROUGHTS GLOBAL CLIMATE CHANGE

  6. EXAMPLE: The Kocaeli, Turkey Earthquake of August 17, 1999

  7. THE KOCALEI, TURKEY EARTHQUAKE M 7.4 3:02 am Over 1,300 aftershocks AUGUST 17, 1999

  8. THE KOCALEI, TURKEY EARTHQUAKE Deaths: 18,000 Injured: 44,000 AUGUST 17, 1999

  9. THE KOCALEI EARTHQUAKE SHOWED THAT TURKEY’S LARGE INVENTORY OF EXISTING SOFT-STOREY BUILDINGS IS VULNERABLE TO GROUND SHAKING.

  10. INFORMATION SOURCES Reports prepared independently and jointly by Turkish, American, and British Institutions, including: EERI, ASCE, USGS, Imperial College, and others.

  11. OCCURRENCE PLATE INTERACTION AND THE NORTH ANATOLIAN FAULT ZONE

  12. TECTONICS • Earthquakes on the North Anatolian fault are caused by the northwards movement of the Arabian plate towards the Eurasian plate, squeezing the small Turkish micro-plate westwards in the process..

  13. NORTH ANATOLIAN FAULT The North Anatolian fault is the most eminent tectonic feature of the region and one of the best known strike slip faults in the world. It is a 1,500-km- long, seismically active, right lateral strike-slip fault system extending from the Karliova triple junction in eastern Turkey to mainland Greece.

  14. NORTH ANATOLIAN FAULT

  15. PHYSICAL EFFECTSSURFACE FAULT RUPTURE

  16. PHYSICAL EFFECTSGROUND SHAKING Soft-storey building are especially vulnerable to ground shaking.

  17. THE TYPICAL SOFT-STOREY BUILDING IN TURKEY

  18. A HUGE BUILDING INVENTORY IS AT RISK TO GROUND SHAKING Hundreds of thousands of soft-storey buildings having the same height and construction materials exist throughout Turkey.

  19. SOCIETAL IMPACTSBUILDINGS Loss of function because of damage and collapse from ground shaking can paralyze a community.

  20. WHAT HAPPENED IN THE KOCALEI, TURKEY EARTHQUAKE 300,000 buildings damaged or collapsed 40,000 buildings housing business enterprise were damaged or collapsed

  21. PHYSICAL EFFECTSGROUND FAILURE Many buildings and lifeline systems in Turkey are susceptible to landslides, liquefaction, and lateral spreads

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