lessons learned from past notable disasters. taiwan part 2: typhoons, floods, and landslides walter...

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  • Slide 1
  • LESSONS LEARNED FROM PAST NOTABLE DISASTERS. TAIWAN PART 2: TYPHOONS, FLOODS, AND LANDSLIDES Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA
  • Slide 2
  • NATURAL HAZARDS THAT PLACE TAIWANS COMMUNITIES AT RISK EARTHQUAKES TYPHOONS FLOODS LANDSLIDES ENVIRONMENTAL DEGRADATION GLOBAL CLIMATE CHANGE ENACT AND IMPLEMENT POLICIES HAVING HIGH BENEFIT/COST FOR COMMUNITY RESILIENCE GOAL: DISASTER RESILIENCE
  • Slide 3
  • Slide 4
  • Slide 5
  • TYPHOONS TAIWAN IS AT RISK EVERY YEAR FROM TROPICAL STORMS AND TYPHOONS FORMING IN THE WESTERN PACIFIC OCEAN, ESPECIALLY IF THEY CAUSE DEVASTATING FLOODS AND LANDSLIDES AFTER LANDFALL
  • Slide 6
  • WIND PENETRATING BUILDING ENVELOPE TYPHOONS UPLIFT OF ROOF SYSTEM FLYING DEBRIS STORM SURGE IRREGULARITIES IN ELEVATION AND PLAN SITING PROBLEMS FLOODING AND LANDSLIDES CAUSES OF DAMAGE DISASTER LABORATORIES
  • Slide 7
  • TAIWANSCOMMUNITIESTAIWANSCOMMUNITIES DATA BASES AND INFORMATION HAZARDS: GROUND SHAKING GROUND FAILURE SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN UP AFTERSHOCKS TYPHOON HAZARDS BLDG. INVENTORY VULNERABILITY LOCATION TYPHOON RISK RISK ACCEPTABLE RISK UNACCEPTABLE RISK GOAL: TYPHOON DISASTER RESILIENCE PREPAREDNESS PROTECTION EARLY WARNING EMERGENCY RESPONSE RECOVERY and RECONSTRUCTION POLICY OPTIONS
  • Slide 8
  • SITING AND BUILDING ON UNSTABLE SLOPES LANDSLIDES SOIL AND ROCK SUCEPTIBLE TO FALLS SOIL AND ROCK SUCEPTIBLE TO TOPPLES SOIL AND ROCK SUCEPTIBLE TO SPREADS SOIL AND ROCK SUSCEPTIBLE TO FLOWS PRECIPITATION THAT TRIGGERS SLOPE FAILURE SHAKING GROUND SHAKING THAT TRIGGERS SLOPE FAILURE CAUSES OF DAMAGE CASE HISTORIES
  • Slide 9
  • Physics Of A Typhoon
  • Slide 10
  • HAZARDS OF A SEVERE WINDSTORM (AKA POTENTIAL DISASTER AGENTS) WIND FIELD [CAT 1 (55 mph) TO CAT 5+ (155 mph or greater)] DEBRIS STORM SURGE HEAVY PRECIPITATION LANDSLIDES (MUDFLOWS) COSTAL EROSION
  • Slide 11
  • LESSONS LEARNED ABOUT DISASTER RESILIENCE ALL TYPHOONS WITHOUT ADEQUATE PROTECTION, HIGH VELOCITY WIND WILL LIFT THE ROOF OFF OF NON- ENGINEERED BUILDINGS.
  • Slide 12
  • LESSONS LEARNED ABOUT DISASTER RESILIENCE ALL TYPHOONS. DISASTER- INTELLIGENT COMMUNITIES USE TIMELY EARLY WARNING BASED ON CRITICAL INFORM- ATION TO EVACUATE PEOPLE AND PREPARE.
  • Slide 13
  • TYPHOON MORACOT
  • Slide 14
  • Morakot was the most devastating storm of the deadly 2009 Pacific typhoon season and was also the deadliest typhoon to impact Taiwan in recorded history
  • Slide 15
  • Slide 16
  • MORACOTS FLOODING
  • Slide 17
  • LOSS OF FUNCTION OF STRUCTURES IN FLOODPLAIN FLOODS INUNDATION INTERACTION WITH HAZARDOUS MATERIALS STRUCTURAL/CONTENTS DAMAGE FROM WATER WATER BORNE DISEASES (HEALTH PROBLEMS) EROSION AND MUDFLOWS CONTAMINATION OF GROUND WATER CAUSES OF RISK CASE HISTORIES
  • Slide 18
  • MORACOTS IMPACTS Morakot dumped a total of 2.5 meters (100 inches) of rain on the island.
  • Slide 19
  • TYPHOON MORACOT: FLOODING CHIATUNG CO.
  • Slide 20
  • TYPHOON MORACOT: SUBMERGED HOUSE
  • Slide 21
  • TYPHOON MORACOT: COLLAPSE OF HOTEL
  • Slide 22
  • TYPHOON MORACOT: RAILWAY BRIDGE DAMAGED
  • Slide 23
  • LESSONS LEARNED FOR DISASTER RESILIENCE ALL TYPHOONS CAPACITY FOR INTELLIGENT EMERGENCY RESPONSE IS ESSENTIAL FOR COMMUNITY RESILIENCE.
  • Slide 24
  • TYPHOON MORACOT: RESCUE WORKERS
  • Slide 25
  • TYPHOON MORACOT: EVACUATION BY MILITARY
  • Slide 26
  • TYPHOON MORACOT: EVACUATION OF ELDERLY
  • Slide 27
  • OTHER NOTABLE TYPHOONS IMPACTING TAIWAN
  • Slide 28
  • NATURAL DISASTERS: 2003 TYPHOON DUJUAN TIAWAN 1-3 SEPTEMBER THOUSANDS OF BUILDINGS AND HOMES INUNDATED AGRICULTURAL CROPS LOST $320 M LOSS $-- 0 INSURED LOSS 42 DEATHS THOUSANDS OF BUILDINGS AND HOMES INUNDATED AGRICULTURAL CROPS LOST $320 M LOSS $-- 0 INSURED LOSS 42 DEATHS
  • Slide 29
  • NATURAL DISASTERS: 2001 TYPHOON NARI (TIAWAN ) $800 MILLION ECONOMIC LOSS PARTIAL INDEMNIFI- CATION BY INSURANCE 93 DEATHS $800 MILLION ECONOMIC LOSS PARTIAL INDEMNIFI- CATION BY INSURANCE 93 DEATHS
  • Slide 30
  • LESSONS LEARNED FOR DISASTER RESILIENCE ALL NATURAL HAZARDS CAPACITY FOR RECOVERY AND RECONSTRUCTION IS ESSENTIAL FOR COMMUNITY RESILIENCE.
  • Slide 31
  • TYPHOON MORACOT: DEBRIS IN FUGANG HARBOR
  • Slide 32
  • MAIN INSIGHTS FROM SEVERE WINDSTORMS EARLY WARNING AND EVACUATION TO MOVE PEOPLE OUT OF HARMS WAY ARE VITAL FOR SAVING LIVES WIND ENGINEERING PROTECTS BUILDINGS WIND INSURANCE POOLS SPREADS RISK
  • Slide 33
  • POLICY ADOPTION RISK ASSESSMENT VULNERABILITYVULNERABILITY EXPOSUREEXPOSURE EVENTEVENT POLICY ASSESSMENT COSTCOST BENEFITBENEFIT CONSEQUENCESCONSEQUENCES TOWARDS TYPHOON DISASTER RESILIENCE TYPHOONSTYPHOONS EXPECTED LOSS
  • Slide 34
  • LANDSLIDES IN TAIWAN ASSOCIATED WITH TYPHOONS AND EARTHQUAKES
  • Slide 35
  • SITING AND BUILDING ON UNSTABLE SLOPES LANDSLIDES SOIL AND ROCK SUCEPTIBLE TO FALLS SOIL AND ROCK SUCEPTIBLE TO TOPPLES SOIL AND ROCK SUCEPTIBLE TO SPREADS SOIL AND ROCK SUSCEPTIBLE TO FLOWS PRECIPITATION THAT TRIGGERS SLOPE FAILURE SHAKING GROUND SHAKING THAT TRIGGERS SLOPE FAILURE CAUSES OF DAMAGE CASE HISTORIES
  • Slide 36
  • MORACOTS IMPACTS At least 40 people dead, many as the result of a village being buried by a landslide (mudslide) during the storm..
  • Slide 37
  • TYPHOON MORACOT: LANDSLIDE; AUGUST 2009
  • Slide 38
  • TYPHOON MORACOT: RESCUE FROM MUDSLIDE AREA
  • Slide 39
  • LANDSLIDE EXACERBATED BY M6.5 EARTHQUAKE AND RAIN APRIL 26, 2010
  • Slide 40
  • Following several days of rain, a hillside collapsed onto a three- lane highway over a 300-meter stretch, burying three cars and disrupting traffic.
  • Slide 41
  • LANDSLIDE AFTER EARTHQUAKE
  • Slide 42
  • SEARCH AND RESCUE

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