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EARTHQUAKE STRIKES CHRISTCHURCH, NEW
ZEALAND
A SHALLOW (2.5 MI), M6.3 QUAKE LOCATED 3 MI FROM
CHRISTCHURCH (USGS) STRUCK AT NOON ON A WORK DAY
Walter Hays, Global Alliance for Disaster Reduction, University of
North Carolina, USA
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LOCATION MAP: CHRISTCHURCH
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Natural Phenomena that Cause Disasters
Planet Earth’s Restlessness Causes Movement of Tectonic Plates:
Earthquakes
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THE INDO-AUSTRALIA AND PACIFIC SUBDUCTION ZONE
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FAULT ZONES IN VICINITY OF NEW ZEALAND
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SEISMICITY MAP: VICINITY OF CHRISTCHURCH
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EPICENTRES: SEPT 2010 AND FEB 2011 EARTHQUAKES
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THIS QUAKE: AN AFTERSHOCK OF THE 3 SEPT 2010 QUAKE
• Christchurch has been hit by hundreds of aftershocks since the M7.1 earthquake of 3 September 2010, which caused extensive damage and injuries, but no deaths.
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PHILIPPINO SEISMOLOGIST: LOOKS AT SEISMOGRAMS IN MANILA
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SHALLOW-DEPTH EARTHQUAKES ARE MORE DAMAGING
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SOCIETAL IMPACTS EXACER-BATED BY SHALLOW DEPTH
• Strong ground shaking toppled tall buildings and churches on a busy weekday, killing at least 100 people, severing communi-cation lines, and leaving the centre of the city looking like “a war zone.”
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INTENSITY MAP: CHRISTCHURCH
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CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
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CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
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CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
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PYNE GOULD GUINESS BUILDING: COLLAPSED
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COLLAPSED BUILDING; CHRISTCHURCH
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DAMAGE: CHRISTCHURCH CATHOLIC CATHEDRAL
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COLLAPSE: A BAPTIST CHURCH
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CRUSHED CARS: CHRISTCHURCH
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BARACADED BUILDING; CHRISTCHURCH
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INTERIOR CONTENTS
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TRAPPED IN RUBBLE
• More than 100 people, including as many as a dozen visiting Japanese students, are thought to be trapped in the rubble.
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SEARCH AND RESCUE
• Despite darkness and drizzling rain, rescue crews with sniffer dogs (and eventually heavy equipment) fanned out across the city in search of survivors, some of whom were sending text and phone messages from beneath the rubble.
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SEARCH AND RESCUE WORKERS
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UNUSUAL PHYSICAL IMPACTS
• 40 million tons of ice were separated from Tasman Glacier located 120 mi from the epicentre, and flooding occurred in Bexley, a suburb of Christchurch.
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40 MILLION TON ICE CHUNK DISLODGED FROM TASMAN GLACIER
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DISLODGED ICE IN TASMAN LAKE
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CHRISTCHURCH SUBURB, BEXLEY, FLOODED
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POLICY POLICY ADOPTIONADOPTION
POLICY POLICY ADOPTIONADOPTION
RISK ASSESSMENT
• VULNERABILITYVULNERABILITY
• EXPOSUREEXPOSURE
• EVENTEVENT
POLICY ASSESSMENT
• COSTCOST
• BENEFITBENEFIT
•CONSEQUENCESCONSEQUENCES
TIME FOR A NEW EARTHQUAKE SCENARIO TIME FOR A NEW EARTHQUAKE SCENARIO AND A POLICY REVIEW: TOWARDS DISASTER AND A POLICY REVIEW: TOWARDS DISASTER
RISK REDUCTIONRISK REDUCTION
EARTH-EARTH-QUAKESQUAKES
EARTH-EARTH-QUAKESQUAKES EXPECTED EXPECTED
LOSSLOSS
EXPECTED EXPECTED LOSSLOSS