TWO EARTHQUAKES SEVERELY CUT NEW ZEALAND’S 2011 ECONOMIC GROWTH A DEEP (33 KM) M7.1 AND A SHALLOW (4 KM) M6.3 QUAKE SIX MONTHS APART COMBINE TO HALF NEW ZEALAND’S ECONOMIC GROWTH Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA
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TWO EARTHQUAKES SEVERELY CUT NEW ZEALAND’S 2011 ECONOMIC GROWTH A DEEP (33 KM) M7.1 AND A SHALLOW (4 KM) M6.3 QUAKE SIX MONTHS APART COMBINE TO HALF NEW.
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TWO EARTHQUAKES SEVERELY CUT NEW ZEALAND’S 2011 ECONOMIC GROWTH
A DEEP (33 KM) M7.1 AND A SHALLOW (4 KM) M6.3 QUAKE SIX MONTHS APART COMBINE TO HALF NEW
ZEALAND’S ECONOMIC GROWTH
Walter Hays, Global Alliance for Disaster Reduction, University of
North Carolina, USA
ECONOMIC IMPACT
• The New Zealand Government's Treasury on Sunday, March 6th released an estimate that February's magnitude 6.3 quake, combined with September's magnitude 7.1 temblor, would cost around 15 billion New Zealand dollars ($11 billion).
Natural Phenomena that Cause Disasters
Planet Earth’s Restlessness Causes Movement of Tectonic Plates:
Earthquakes
LOCATION MAP: CHRISTCHURCH
THE INDO-AUSTRALIA AND PACIFIC SUBDUCTION ZONE
FAULT ZONES IN VICINITY OF NEW ZEALAND
M7.1 EARTHQUAKE STRIKES NEAR
CHRISTCHURCH, NEW ZEALAND
A DEEP (33 KM) QUAKE LOCATED 50 KM FROM CHRISTCHURCH
STRUCK AT 4:00 AM
SEPTEMBER 4, 2010
EXTENSIVE DAMAGE, BUT NO DEATHS
• The earthquake caused extensive damage to buildings and infrastructure, but no deaths.
DAMAGE: DOWNTOWN CHRISTCHURCH
CHRISTCHURCH: DAMAGE SEPT 4, 2010
DAMAGE: BEFORE AND AFTER
RAIL LINES
NEW ZEALAND MOTORWAY
LANDSLIDE
EARTHQUAKE STRIKES CHRISTCHURCH, NEW
ZEALAND
A SHALLOW (4.1 KM), M6.3 QUAKE LOCATED 5 KM FROM
CHRISTCHURCH (USGS) STRUCK AT NOON ON FEBRUARY 24TH
THIS QUAKE: AN AFTERSHOCK OF THE 4 SEPT 2010 QUAKE
• Christchurch was hit by hundreds of aftershocks after the M7.1 earthquake of 4 September 2010, which caused extensive damage and injuries, but no deaths.
EPICENTRES OF THE TWO EARTHQUAKES
SEISMICITY MAP: VICINITY OF CHRISTCHURCH
PHILIPPINO SEISMOLOGIST: LOOKS AT SEISMOGRAMS IN MANILA
THE 4.1-KM DEPTH MADE THIS EARTHQUAKE MORE DAMAGING
SOCIETAL IMPACTS EXACER-BATED BY SHALLOW DEPTH
• Strong ground shaking toppled tall buildings and churches on a busy weekday, killing at least 166 people, severing communi-cation lines, and leaving the centre of the city looking like “a war zone” and unusable.
INTENSITY MAP: CHRISTCHURCH
CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
CHRISTCHURCH CITY CENTRE: “A WAR ZONE”
PYNE GOULD GUINESS BUILDING: COLLAPSED
COLLAPSED BUILDING; CHRISTCHURCH
DAMAGE: CHRISTCHURCH CATHOLIC CATHEDRAL
COLLAPSE: A BAPTIST CHURCH
CRUSHED CARS: CHRISTCHURCH
BARACADED BUILDING; CHRISTCHURCH
INTERIOR CONTENTS
TRAPPED IN RUBBLE
• More than 100 people, including as many as a dozen visiting Japanese students, are thought to be trapped in the rubble.
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.
SEARCH AND RESCUE WORKERS
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.
40 MILLION TON ICE CHUNK DISLODGED FROM TASMAN GLACIER
DISLODGED ICE IN TASMAN LAKE
CHRISTCHURCH SUBURB, BEXLEY, FLOODED
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