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CAN MEGACITIES BE DISASTER RESILIENT ALTHOUGH “BIG” CAN BE VERY VULNERABLE, WHY NOT

CAN MEGACITIES BE DISASTER RESILIENT ALTHOUGH “BIG” CAN BE VERY VULNERABLE, WHY NOT . Walter Hays Global Alliance For Disaster Reduction. QUESTION . WHAT IS A MEGACITY AND WHAT MEASURES WILL MAKE IT LESS VULNERABLE TO THE POTENTIAL DISASTER AGENTS OF NATURAL HAZARDS?. TOKYO: 21.9 M

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CAN MEGACITIES BE DISASTER RESILIENT ALTHOUGH “BIG” CAN BE VERY VULNERABLE, WHY NOT

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  1. CAN MEGACITIES BE DISASTER RESILIENTALTHOUGH “BIG” CAN BE VERY VULNERABLE, WHY NOT Walter Hays Global Alliance For Disaster Reduction

  2. QUESTION • WHAT IS A MEGACITY AND WHAT MEASURES WILL MAKE IT LESS VULNERABLE TO THE POTENTIAL DISASTER AGENTS OF NATURAL HAZARDS?

  3. TOKYO: 21.9 M NEW YORK: 15.6 M MEXICO CITY: 13.9 M SAO PAULO: 12.5 M SHANGHAI: 11.7 OSAKA: 10.0 M BUENOS AIRES: 9.9 M LOS ANGELES: 9.5 M CALCUTA 9.0 M BEIJING 9.0 M SOURCE: THE POPULATION INSTITUTE 2/3/01 MEGACITIES IN 1900WORLD POPULATION:1.6 BILLION

  4. TOKYO: 25.4 M BOMBAY: 18.6 M MEXICO CITY: 18.3 M SAO PAULO: 18.0 M NEW YORK: 16.7 M LAGOS: 14.1 M CALCUTA 13.2 M LOS ANGELES: 13.2 M SHANGHAI: 13.0 M BUENOS AIRES: 12.7 M SOURCE: THE POPULATION INSTITUTE 2/3/01 MEGACITIES IN 2000WORLD POPULATION:6 BILLION

  5. BOMBAY: 28.5 M TOKYO: 27.3 M LAGOS: 26.5 M DHAKA: 24.0 M KARACHI: 21.7 M SAO PAULO: 21.3 M MEXICO CITY: 19.6 M JAKARTA: 19.4 CALCUTA 18.8 M NEW DEHLI: 18:R M SOURCE: THE POPULATION INSTITUTE 2/3/01 MEGACITIES IN 2020WORLD POPULATION:10 BILLION

  6. WHAT HISTORY TEACHES • CITIES AND MEGACITIES EXIST BY GEOLOGIC, HYDROLOGIC, AND ATMOSPHERIC CONSENT, WHICH CAN BE WITHDRAWN WITHOUT NOTICE.

  7. MEGACITIES FACE DISASTERS FROM … • EARTHQUAKES • FLOODS • SEVERE WINDSTORMS • LANDSLIDES • VOLCANIC ERUPTIONS • WILDFIRES • TSUNAMIS • DROUGHTS

  8. INTERLOCKING CONCEPTS ON MEGACITIES AND NATURAL HAZARDS • NATURAL HAZARDS, GENERATE POTENTIAL DISASTER AGENTS WHICH CREATE RISK TO THE BUILT ENVIRONMENT. • THE CHOICE: LIVE WITH UNACCEPTABLE RISK OR ACCEPTABLE LEVELS OF RISK.

  9. INTERLOCKING CONCEPTS ON MEGACITIES AND NATURAL HAZARDS • UNACCEPTABLE RISK CALLS FOR PUBLIC POLICIES TO REDUCE VULNER-ABILITIES.

  10. INTERLOCKING CONCEPTS ON MEGACITIES AND NATURAL HAZARDS • VULNERABILITIES REFLECT POLICY FLAWS WITH RESPECT TO PREPAREDNESS, PROTECTION, RESPONSE, AND RECOVERY

  11. INTERLOCKING CONCEPTS ON MEGACITIES AND NATURAL HAZARDS • PREPAREDNESS, PROTECTION, RESPONSE, AND RECOVERY ARE THE MOST EFFECTIVE MEASURES. • BUT, THEY ARE HARD TO SELL TO THE PUBLIC AND TAKE TIME TO IMPLEMENT.

  12. TOKYO: A MEGACITY AT RISK FROM NATURAL HAZARDS

  13. CAIRO: A MEGACITY AT RISK FROM NATURAL HAZARDS

  14. ISTHANBUL: A MEGACITY AT RISK FROM NATURAL HAZARDS

  15. ISTHANBUL: CAUSES OF VULNERABILITIES • SIZE • FRAGILITY OF EXISTING BUIDINGS/INFRASTRUCTURE • INADEQUATE PROTECTION MEASURES • CONSTRUCTION MATERIALS AND PRACTICES

  16. SAN FRANCISCO: DEPENDENT ON TRANSPORTATION • DAMAGE TO ONE SPAN OF THE BAY BRIDGE CHANGED THE LIVES OF MILLIONS AND DISRUPTED MANY BUSINESSES. • NOONE KNOWS THE TRUE COST.

  17. LOS ANGELES: DEPENDENT ON UTILITY SYSTEMS • DAMAGE TO A UTILIYY CORRIDOR CAUSEED WIDESPREAD OUTAGES OF POWER, GAS, WATER, AND WASTE CENTERS. • OUTAGES LED TO LOSSES IN THE MILLIONS.

  18. SAN FRANCISCO: SUSCEPTIBLE TO FIRE

  19. QUESTION • CAN WE MAKE MEGACITIES RESILIENT TO NATURAL HAZARDS?

  20. NAT. HAZARDS • INVENTORY • VULNERABILITY • LOCATION • PREPAREDNESS • PRPTECTION • EMERGENCY RESPONSE • RECOVERY • EDUCATIONAL SURGES RISK ASSESSMENT DISASTER RESILIENCE ACCEPTABLE RISK RISK UNACCEPTABLE RISK VULNERABILITY REDUCTON DATA BASES AND INFORMATION MEGACITY HAZARDS: GROUND SHAKING GROUND FAILURE SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN UP AFTERSHOCKS

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