February 2011 Canterbury Earthquake
   HOME

TheInfoList



OR:

A major earthquake occurred in
Christchurch Christchurch ( ; mi, Ōtautahi) is the largest city in the South Island of New Zealand and the seat of the Canterbury Region. Christchurch lies on the South Island's east coast, just north of Banks Peninsula on Pegasus Bay. The Avon River / ...
on Tuesday 22 February 2011 at 12:51 p.m. local time (23:51 UTC, 21 February). The () earthquake struck the entire of the
Canterbury Canterbury (, ) is a City status in the United Kingdom, cathedral city and UNESCO World Heritage Site, situated in the heart of the City of Canterbury local government district of Kent, England. It lies on the River Stour, Kent, River Stour. ...
region in the
South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...
, centred south-east of the central business district. It caused widespread damage across Christchurch, killing 185 people, in New Zealand's fifth-deadliest disaster. Christchurch's central city and eastern suburbs were badly affected, with damage to buildings and infrastructure already weakened by the magnitude 7.1 Canterbury earthquake of 4 September 2010 and its aftershocks. Significant
liquefaction In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid phase which behaves in accordance with fluid dynamics. It occurs both naturally and artificially. As an example of the ...
affected the eastern suburbs, producing around 400,000 tonnes of
silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when ...
. The earthquake was felt across the South Island and parts of the lower and central North Island. While the initial quake only lasted for approximately 10 seconds, the damage was severe because of the location and shallowness of the earthquake's focus in relation to Christchurch as well as previous quake damage. Subsequent population loss saw the Christchurch main urban area fall behind the
Wellington Wellington ( mi, Te Whanganui-a-Tara or ) is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the second-largest city in New Zealand by me ...
equivalent, to decrease from second- to third-most populous area in New Zealand.


Geology

The 6.3-magnitude earthquake may have been an
aftershock In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousand ...
of the 7.1-magnitude 4 September
2010 Canterbury earthquake The 2010 Canterbury earthquake (also known as the Darfield earthquake) struck the South Island of New Zealand with a moment magnitude of 7.1 at on , and had a maximum perceived intensity of X (''Extreme'') on the Mercalli intensity scale. Som ...
. New Zealand's GNS Science has stated that the earthquake was part of the aftershock sequence that has been occurring since the September magnitude-7.1 quake, however a seismologist from Geoscience Australia considers it a separate event given its location on a separate fault system. According to GNS Science seismologists, the energy released in Christchurch was equivalent to a magnitude 6.7 earthquake. Although smaller in magnitude than the 2010 earthquake, the February earthquake was more damaging and deadly for a number of reasons. The epicentre was closer to Christchurch, and shallower at underground, whereas the September quake was measured at deep. The February earthquake occurred during lunchtime on a weekday when the CBD was busy, and many buildings were already weakened from the previous quakes. The peak ground acceleration (PGA) was extremely high, and simultaneous vertical and horizontal ground movement was "almost impossible" for buildings to survive intact. Liquefaction was significantly greater than that of the 2010 quake, causing the upwelling of more than 200,000 tonnes of silt which needed to be cleared. The increased liquefaction caused significant ground movement, undermining many foundations and destroying infrastructure, damage which "may be the greatest ever recorded anywhere in a modern city". 80% of the water and sewerage system was severely damaged.


Fault

GNS Science stated that the earthquake arose from the rupture of an 8 km x 8 km fault running east-northeast at a depth of 1–2 km beneath the southern edge of the Avon-Heathcote Estuary and dipping southwards at an angle of about 65 degrees from the horizontal beneath the Port Hills." While both the 2010 and 2011 earthquakes occurred on "blind" or unknown faults, New Zealand's
Earthquake Commission The Earthquake Commission, ( mi, Kōmihana Rūwhenua), is a New Zealand Crown entity that invests in natural disaster research and education as well as providing natural disaster insurance to residential property owners. In March 2022, a bill ...
had, in a 1991 report, predicted moderate earthquakes in Canterbury with the likelihood of associated liquefaction.


Intensity

Initial measurement of peak ground acceleration (PGA) in central Christchurch exceeded 1.8 ''g'' (i.e. 1.8 times the acceleration of gravity), with the highest recording 2.2 ''g'', at Heathcote Valley Primary School, a shaking intensity equivalent to MMI X+. Subsequent analysis revised the Heathcote Valley Primary School acceleration down to 1.37 ''g'', with the 1.89 ''g'' reading at Pages Road Pumping Station in Christchurch revised down to 1.51 ''g''. Nevertheless, these were the highest PGAs ever recorded in New Zealand; the highest reading during the September 2010 event was 1.26 ''g'', recorded near Darfield. The PGA is also one of the greatest-ever ground accelerations recorded in the world, and was unusually high for a 6.2 quake, and the highest in a vertical direction. The
central business district A central business district (CBD) is the commercial and business centre of a city. It contains commercial space and offices, and in larger cities will often be described as a financial district. Geographically, it often coincides with the "city ...
(CBD) experienced PGAs in the range of 0.574 and 0.802 ''g''. As a comparison, the 7.0 Mw
2010 Haiti earthquake A disaster, catastrophic Moment magnitude scale, magnitude 7.0 Mw earthquake struck Haiti at 16:53 local time (21:53 UTC) on Tuesday, 12 January 2010. The epicenter was near the town of Léogâne, Ouest (department), Ouest department, a ...
had an estimated PGA of 0.5 ''g''. The acceleration occurred mainly in a vertical direction, with eyewitness accounts of people being tossed into the air. The upwards (positive acceleration) was greater than the downwards, which had a maximum recording of 0.9 ''g''; the maximum recorded horizontal acceleration was 1.7 ''g'' The force of the earthquake was "statistically unlikely" to occur more than once in 1000 years, according to one seismic engineer, with a PGA greater than many modern buildings were designed to withstand. Although the rupture was
subsurface In geology, bedrock is solid rock that lies under loose material (regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bedro ...
, satellite images indicated that the net displacement of the land south of the fault was 50 cm westwards and upwards; the land movement would have been greater during the earthquake. Land movement was varied around the area horizontally—in both east and west directions—and vertically; the Port Hills were raised by 40 cm. The earthquake was a "
strike-slip In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...
event with oblique motion" which caused mostly horizontal movement with some vertical movement, with reverse thrust causing upwards vertical movement. The vertical acceleration was far greater than the horizontal acceleration. The current New Zealand building code requires a building with a 50-year design life to withstand predicted loads of a 500-year event. Initial reports by GNS Science suggested that ground motion "considerably exceeded even 2500-year design motions", beyond maximum considered events (MCE). By comparison, the 2010 quake—in which damage was predominantly to pre-1970s buildings—exerted 65% of the design loading on buildings. The acceleration experienced in February 2011 would "totally flatten" most world cities, causing massive loss of life; in Christchurch, New Zealand's stringent building codes limited the disaster. It is also possible that "seismic lensing" contributed to the ground effect, with the seismic waves rebounding off the hard basalt of the
Port Hills The Port Hills are a range of hills in Canterbury Region, so named because they lie between the city of Christchurch and its port at Lyttelton. They are an eroded remnant of the Lyttelton volcano, which erupted millions of years ago. The hi ...
back into the city. Geologists reported
liquefaction In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid phase which behaves in accordance with fluid dynamics. It occurs both naturally and artificially. As an example of the ...
was worse than the 2010 earthquake.


Aftershocks

The earthquake generated a significant series of its own
aftershocks In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousand ...
. More than 361 aftershocks occurred in the first week following the magnitude 6.3 earthquake. * The largest was a magnitude 5.9 tremor which occurred just under two hours after the main earthquake. * A 5.3-magnitude aftershock on 16 April, the largest for several weeks, caused further damage, including power cuts and several large rock falls. * An aftershock from the
Greendale Fault The Greendale Fault is an active seismic fault situated in the Canterbury Plains in New Zealand's South Island. Canterbury earthquake A powerful 7.1 magnitude earthquake, occurred on the Greendale Fault at 4:35 am on local time (16: ...
measuring 5.3 on the
Richter scale The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 ...
hit the region on 10 May 2011. It cut power to homes and businesses for several minutes and caused further damage to buildings in the city centre. No deaths or injuries were reported. It was felt as far away as Dunedin and Greymouth. * On 6 June, a large aftershock measuring 5.5 on the Richter scale occurred and was felt as far away as Kaikoura and
Oamaru Oamaru (; mi, Te Oha-a-Maru) is the largest town in North Otago, in the South Island of New Zealand, it is the main town in the Waitaki District. It is south of Timaru and north of Dunedin on the Pacific coast; State Highway 1 and the railway ...
. * A series of aftershocks occurred on 13 June. A tremor of 5.7 on the Richter scale was felt at 1 pm
NZT Time in New Zealand is divided by law into two standard time zones. The main islands use New Zealand Standard Time (NZST), 12 hours in advance of Coordinated Universal Time (UTC) / military M (Mike), while the outlying Chatham Islands use Cha ...
, with a depth of 9 km, its epicentre at
Taylors Mistake Te Onepoto / Taylors Mistake is a locality in New Zealand's South Island, at the southeastern extremity of the city of Christchurch Taylors Mistake is a bay adjacent to the locality, on the north side of Awaroa / Godley Head, on the northern ed ...
. A 6.0 tremor occurred just over an hour later, with a depth of 7 km, located 5 km south-east of the city. Power was cut to around 54,000 homes, with further damage and liquefaction in already weakened areas. The
Lyttelton Timeball Station The Lyttelton Timeball Station is a heritage-registered time ball station and prominent local landmark in Lyttelton, New Zealand. The original station was significantly damaged by a series of earthquakes and aftershocks in 2010 and 2011, and ...
collapsed and
Christchurch Cathedral ChristChurch Cathedral, also called Christ Church Cathedral and (rarely) Cathedral Church of Christ, is a deconsecrated Anglican cathedral in the city of Christchurch, New Zealand. It was built between 1864 and 1904 in the centre of the city, ...
sustained more damage. At least 46 people were reported injured. These were followed by a magnitude 5.4 quake at a depth of 8 km and centred 10 km south-west of Christchurch at 10:34 pm on 21 June 2011. * 23 December 2011 featured another series of strong shocks, including a 5.8 at 1:58pm and a 6.0 at 3:18pm. The earthquakes interrupted power and water supplies, three unoccupied buildings collapsed and there was again liquefaction in eastern suburbs and rockfalls in hill areas. One person died after tripping on uneven ground caused by the earthquake. Below is a list of all aftershocks of Richter, moment, and body-wave magnitudes 5.0 and above that occurred in the region between 22 February 2011 and 15 January 2012.


Damage and effects

Road and bridge damage occurred and hampered rescue efforts.
Soil liquefaction Soil liquefaction occurs when a cohesionless saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress such as shaking during an earthquake or other sudden change in stress condition, in ...
and surface flooding also occurred. Road surfaces were forced up by liquefaction, and water and sand were spewing out of cracks. A number of cars were crushed by falling debris. In the central city, two buses were crushed by falling buildings. Because the earthquake hit during the lunch hour, some people on the footpaths were buried by collapsed buildings.


Central city

Damage occurred to many older buildings, particularly those with unreinforced masonry and those built before stringent earthquakes codes were introduced. On 28 February 2011, the Prime Minister announced that there would be an inquiry into the collapse of buildings that had been signed off as safe after the previous earthquake on 4 September 2010, "to provide answers to people about why so many people lost their lives." Of the 3,000 buildings inspected within the four avenues which bound the central business district by 3 March 2011, 45% had been given red or yellow stickers to restrict access because of the safety problems. Many heritage buildings were given red stickers after inspections. As of February 2015, there had been 1240 demolitions within the bounds of the four avenues since the September 2010 earthquakes. The six-storey Canterbury Television (CTV) building collapsed in the earthquake, leaving only its
lift shaft An elevator or lift is a cable-assisted, hydraulic cylinder-assisted, or roller-track assisted machine that vertically transports people or freight between floors, levels, or decks of a building, vessel, or other structure. They are ...
standing, which caught fire. 115 people died in the building, which housed a TV station, a medical clinic and an English language school. On 23 February police decided that the damage was not survivable, and rescue efforts at the building were suspended. Fire-fighting and recovery operations resumed that night, later joined by a Japanese search and rescue squad. Twelve Japanese students from the Toyama College of Foreign Languages died in the building collapse. A government report later found that the building's construction was faulty and should not have been approved. The four-storey Pyne Gould Guinness (PGC) House on Cambridge Terrace, headquarters of Pyne Gould Corporation, collapsed, with 18 casualties. On Wednesday morning, 22 hours after the quake, a survivor was pulled from the rubble. The
reinforced concrete Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having hig ...
building had been constructed in 1963–1964. The
Forsyth Barr Building The Crowne Plaza Christchurch, formerly known as the Forsyth Barr Building, is located on the south-east corner of the Armagh and Colombo Streets intersection in Christchurch, New Zealand. Originally owned by Bob Jones and branded Robert Jones H ...
survived the earthquake but many occupants were trapped after the collapse of the stairwells, forcing some to abseil out after the quake. Search of the building was technically difficult for USAR teams, requiring the deconstruction of 4-tonne stair sets, but the building was cleared with no victims discovered. The earthquake destroyed the
ChristChurch Cathedral ChristChurch Cathedral, also called Christ Church Cathedral and (rarely) Cathedral Church of Christ, is a deconsecrated Anglican cathedral in the city of Christchurch, New Zealand. It was built between 1864 and 1904 in the centre of the city, ...
's spire and part of its tower, and severely damaged the structure of the remaining building. The remainder of the tower was demolished in March 2012. The west wall suffered collapses in the June 2011 earthquake and the December 2011 quake due to a steel structure – intended to stabilise the
rose window Rose window is often used as a generic term applied to a circular window, but is especially used for those found in Gothic cathedrals and churches. The windows are divided into segments by stone mullions and tracery. The term ''rose window'' w ...
– pushing it in. The Anglican Church decided to demolish the building and replace it with a new structure, but various groups opposed the church's intentions, with actions including taking a case to
court A court is any person or institution, often as a government institution, with the authority to adjudicate legal disputes between parties and carry out the administration of justice in civil, criminal, and administrative matters in accordance ...
. While the judgements were mostly in favour of the church, no further demolition occurred after the removal of the tower in early 2012. Government expressed its concern over the stalemate and appointed an independent negotiator and in September 2017, the Christchurch Diocesan Synod announced that ChristChurch Cathedral will be reinstated after promises of extra grants and loans from local and central government. By mid-2019 early design and stabilisation work had begun. Since 15 August 2013 the cathedral congregation has worshipped at the
Cardboard Cathedral The Cardboard Cathedral, formally called the Transitional Cathedral, in Christchurch, New Zealand, is the transitional pro-cathedral of the Anglican Diocese of Christchurch, replacing ChristChurch Cathedral, which was significantly damaged in t ...
.
Christchurch Hospital Christchurch Hospital is the largest tertiary hospital in the South Island of New Zealand. The public hospital is in the centre of Christchurch city, on the edge of Hagley Park, and serves the wider Canterbury region. The Canterbury District Heal ...
was partly evacuated due to damage in some areas, but remained open throughout to treat the injured. On 23 February,
Hotel Grand Chancellor Hotel Grand Chancellor is a hotel chain that operates throughout Australia and New Zealand. History The Hotel Grand Chancellor, Christchurch was severely damaged in the February 2011 Christchurch earthquake, and was believed to be in an imminen ...
, Christchurch's tallest hotel, was reported to be on the verge of collapse. The 26-storey building was displaced by half a metre in the quake and had dropped by 1 metre on one side; parts of the emergency stairwells collapsed. The building was thought to be irreparably damaged and have the potential to bring down other buildings if it fell; an area of a two-block radius around the hotel was thus evacuated. The building was eventually stabilised and, on 4 March it was decided the building would be demolished over the following six months, so that further work could be done with the buildings nearby. Demolition was completed in May 2012. The 21-storey PricewaterhouseCoopers building, the city's tallest office tower, was among the office buildings to be later demolished. The Carlton Hotel, a listed heritage building, was undergoing repairs after the September 2010 earthquake damage when the February 2011 earthquake damaged the building further. It was deemed unstable and demolished in April 2011. St Elmo Courts had been damaged in the September 2010 earthquake and the owner intended to repair the building, but further damage caused by the February 2011 event resulted in a decision to demolish, which was done the following month. The historic
Canterbury Provincial Council Buildings The Canterbury Provincial Council Buildings were the buildings of the Canterbury Provincial Council that administered the Canterbury Province from 1853 until the abolition of provincial government in 1876. The buildings are the only purpose-built ...
were severely damaged, with the Stone Chamber completely collapsing. The second civic office building of Christchurch City Council,
Our City Our City, more formally Our City O-Tautahi, also known as the Old Municipal Chambers, is a Queen Anne style building on the corner of Worcester Street and Oxford Terrace in the Christchurch Central City. It is a Category I heritage building reg ...
, had already been damaged in the September earthquake and was heavily braced following the February event. The
Civic Civic is something related to a city or municipality. It also can refer to multiple other things: General *Civics, the science of comparative government *Civic engagement, the connection one feels with their larger community *Civic center, a comm ...
, the council's third home, was heavily damaged in February and was demolished. Both Our City and the Civic are on the register of Heritage New Zealand. The Catholic Cathedral of the Blessed Sacrament was also severely damaged, with the towers falling. A decision was made to remove the dome because the supporting structure was weakened. Several other churches were seriously damaged, including: Knox Presbyterian Church, St Luke's Anglican Church,
Durham Street Methodist Church The Durham Street Methodist Church in Christchurch was the earliest stone church constructed in the Canterbury region of New Zealand. It is registered as a "Historic Place – Category I" by Heritage New Zealand. The church was severely damaged ...
, St Paul's-Trinity-Pacific Presbyterian Church,
Oxford Terrace Baptist Church Oxford Terrace Baptist Church is located in the Christchurch Central City on a prominent corner property fronting the Avon River. The original building was significantly damaged in the 2010 Canterbury earthquake and collapsed in the subsequent F ...
,
Holy Trinity Avonside Holy Trinity Avonside was a heritage-listed Anglican church located in Linwood, Christchurch, New Zealand. It was registered as a "Historic Place – Category I" by the New Zealand Historic Places Trust. It was "damaged beyond the point of repair ...
and Holy Trinity, Lyttelton.
Sydenham Heritage Church Sydenham Heritage Church, originally known as the Colombo Street Methodist Church or Colombo Street Wesleyan Church or Colombo Road Wesleyan Church was a heritage-listed stone church building located in Sydenham, an inner suburb Christchurch, New ...
and the Beckenham Baptist Church were heavily damaged, and then demolished days after the earthquake. Concrete block construction fared badly, leaving many modern iconic buildings damaged.


Suburbs

On 7 March, Prime Minister John Key said that around 10,000 houses would need to be demolished, and liquefaction damage meant that some parts of Christchurch could not be rebuilt on. ;Residential red zone Several areas in and around Christchurch were deemed infeasible to rebuild due to earthquake damage resulting from
soil liquefaction Soil liquefaction occurs when a cohesionless saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress such as shaking during an earthquake or other sudden change in stress condition, in ...
and
rockslides A rockslide is a type of landslide caused by rock failure in which part of the bedding plane of failure passes through compacted rock and material collapses ''en masse'' and not in individual blocks. Note that a rockslide is similar to an avalanc ...
. These areas were placed into a residential red zone. ;Lyttelton Buildings in Lyttelton sustained widespread damage, with a fire officer reporting that 60% of the buildings in the main street had been severely damaged. Two people died on local walking tracks after being hit by rockfalls. The town's historic Timeball Station was extensively damaged, adding to damage from the preceding earthquake in September 2010. The station collapsed on 13 June 2011 after a magnitude 6.0 aftershock. In 2013, it was announced that the tower and ball would be restored, and that funds were to be sought from the community to rebuild the rest of the station. The restoration was completed in 2018 with the site being reopened in November. ;Sumner Landslides occurred in
Sumner Sumner may refer to: Places Antarctica * Mount Sumner, a mountain in the Rare Range, Antarctica * Sumner Glacier, southern Graham Land, Antarctica Australia * Sumner, Queensland, suburb of Brisbane New Zealand * Sumner, New Zealand, seaside sub ...
, crushing buildings. Parts of Sumner were evacuated during the night of 22 February after cracks were noticed on a nearby hillside. Three deaths were reported in the Sumner area, according to the Sumner Chief Fire Officer. The
Shag Rock Shag Rock may refer to the following places: * Shag Rock (Antarctica) * Shag Rock (California), United States * Rapanui Rock, also called "Shag Rock", located in New Zealand * Shag Rock (Houtman Abrolhos), Australia See also * Shag Rock (band), ...
, a notable landmark, was reduced to half of its former height. ;Redcliffs In contrast to the September 2010 earthquake, Redcliffs and the surrounding hills suffered severe damage. The cliff behind Redcliffs School collapsed onto the houses below. Large boulders were found on the lawns of damaged houses. Twelve streets in Redcliffs were evacuated on the night of 24 February 2015 after some cliffs and hills surrounding Redcliffs were deemed unstable. Redcliffs Primary School, then located at 140 Main Road, right under the cliffs, was moved to Van Asch Deaf Education Centre, 4.5 km from the main site soon afterwards. After 9 years, the school was moved to Redcliffs Park, reopening in July 2020. The cost of the rebuild was $16 million.


Beyond Christchurch

The quake was felt as far north as Tauranga and as far south as
Invercargill Invercargill ( , mi, Waihōpai is the southernmost and westernmost city in New Zealand, and one of the southernmost cities in the world. It is the commercial centre of the Southland region. The city lies in the heart of the wide expanse of t ...
, where the 111 emergency network was rendered out of service. At the
Tasman Glacier Haupapa / Tasman Glacier is the largest glacier in New Zealand, and one of several large glaciers which flow south and east towards the Mackenzie Basin from the Southern Alps in New Zealand's South Island. Geography At in length, Tasman Glacie ...
some from the epicentre, around 30 million
tonne The tonne ( or ; symbol: t) is a unit of mass equal to 1000  kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton ( United State ...
s (33 million ST) of ice tumbled off the glacier into
Tasman Lake Tasman Lake is a proglacial lake formed by the recent retreat of the Tasman Glacier in New Zealand's South Island. In the early 1970s, there were several small meltwater ponds on the Tasman Glacier. By 1990, these ponds had merged into Tasman L ...
, hitting tour boats with tsunami waves high. KiwiRail reported that the TranzAlpine service was terminating at Greymouth and the
TranzCoastal The ''Coastal Pacific'' is a long-distance passenger train that runs between Picton and Christchurch in the South Island of New Zealand. It is operated by The Great Journeys of New Zealand division of KiwiRail. It was called the ''TranzCoas ...
terminating at Picton. The TranzAlpine was cancelled until 4 March, to allow for personnel resources to be transferred to repairing track and related infrastructure, and moving essential freight into Christchurch, while the TranzCoastal was cancelled until mid-August. KiwiRail also delayed 14 March departure of its
Interislander Interislander is a road and rail ferry service across New Zealand's Cook Strait, between Wellington in the North Island and Picton in the South Island. It is owned and operated by state-owned rail operator KiwiRail. Three roll-on roll-off (R ...
ferry to Singapore for a extension and refit prior to the 2011 Rugby World Cup. With extra passenger and freight movements over Cook Strait following the earthquake, the company would have been unable to cope with just two ships operating on a reduced schedule so soon after the earthquake, so pushed back the departure to the end of April. The earthquake combined with the urgency created by the unseasonably early break-up of sea ice on the
Ross Ice Shelf The Ross Ice Shelf is the largest ice shelf of Antarctica (, an area of roughly and about across: about the size of France). It is several hundred metres thick. The nearly vertical ice front to the open sea is more than long, and between hi ...
caused logistical problems with the return of Antarctic summer season research operations from Scott Base and
McMurdo Station McMurdo Station is a United States Antarctic research station on the south tip of Ross Island, which is in the New Zealand-claimed Ross Dependency on the shore of McMurdo Sound in Antarctica. It is operated by the United States through the Unit ...
in Antarctica to Christchurch.


Casualties

185 people from more than 20 countries died in the earthquake. Over half of the deaths occurred in the six-storey Canterbury Television (CTV) Building, which collapsed and caught fire in the earthquake. A state of local emergency was initially declared by the Mayor of Christchurch, which was superseded when the
government A government is the system or group of people governing an organized community, generally a state. In the case of its broad associative definition, government normally consists of legislature, executive, and judiciary. Government is a ...
declared a state of national emergency, which stayed in force until 30 April 2011. Of the 185 victims, 115 people died in the CTV Building alone, while another 18 died in the collapse of PGC House, and eight were killed when masonry fell on Red Bus number 702 in Colombo Street. In each of these cases the buildings that collapsed were known to have been appreciably damaged in the September 2010 earthquake but the local authority had permitted the building to be re-occupied (CTV and PGC buildings) or protective barriers adjacent to them moved closer to areas at risk of falling debris (Colombo Street). An additional 28 people were killed in various places across the city centre, and twelve were killed in suburban Christchurch. Due to the injuries sustained some bodies remained unidentified. Between 6,600 and 6,800 people were treated for minor injuries, and
Christchurch Hospital Christchurch Hospital is the largest tertiary hospital in the South Island of New Zealand. The public hospital is in the centre of Christchurch city, on the edge of Hagley Park, and serves the wider Canterbury region. The Canterbury District Heal ...
alone treated 220 major
trauma Trauma most often refers to: *Major trauma, in physical medicine, severe physical injury caused by an external source *Psychological trauma, a type of damage to the psyche that occurs as a result of a severely distressing event *Traumatic inju ...
cases connected to the quake. Rescue efforts continued for over a week, then shifted into recovery mode. The last survivor was pulled from the rubble the day after the quake. The nationalities of the deceased are as follows.


Emergency management

Immediately following the earthquake, 80% of Christchurch was without power. Water and wastewater services were disrupted throughout the city, with authorities urging residents to conserve water and collect rainwater. Prime Minister John Key confirmed that, "All Civil Defence procedures have now been activated; the Civil Defence bunker at parliament is in operation here in
Wellington Wellington ( mi, Te Whanganui-a-Tara or ) is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the second-largest city in New Zealand by me ...
." It was only the second time that New Zealand had declared a national civil defence emergency; the first occasion was the
1951 waterfront dispute The 1951 New Zealand waterfront dispute was the largest and most widespread industrial dispute in New Zealand history. During the time, up to twenty thousand workers went on strike in support of waterfront workers protesting against financial ha ...
. The
New Zealand Red Cross New Zealand Red Cross or Ripeka Whero Aotearoa is a humanitarian organisation, which has more than 15,000 members and volunteers. In New Zealand, Red Cross delivers core community services, such as Meals on Wheels, Community Transport, Refugee ...
launched an appeal to raise funds to help victims. A full response management structure was put in place within minutes of the quake, with the Christchurch City Council's alternate Emergency Operations Centre re-established in the City Art Gallery and the regional Canterbury CDEM Group Emergency Coordination Centre (ECC) activated in its post-earthquake operational facility adjacent to the Canterbury Regional Council offices. Within two hours of the quake national co-ordination was operating from the
National Crisis Management Centre The National Crisis Management Centre (NCMC), also known as the Beehive Bunker, is the New Zealand government crisis management command centre situated under the "Beehive" building in Wellington. It is designed to withstand earthquakes rated 'Inte ...
located in the basement of the Beehive in Wellington. A composite "Christchurch Response Centre" was established in the Christchurch Art Gallery, a modern earthquake-resilient building in the centre of the city which had sustained only minor damage. On 23 February the Minister of Civil Defence, John Carter declared the situation a state of national emergency, the country's first for a civil defence emergency (the only other one was for the
1951 waterfront dispute The 1951 New Zealand waterfront dispute was the largest and most widespread industrial dispute in New Zealand history. During the time, up to twenty thousand workers went on strike in support of waterfront workers protesting against financial ha ...
). Meanwhile, the Canterbury CDEM Group ECC had relocated to the fully operational University of Canterbury Innovation (UCi3) building to the West of the city, when the Copthorne Hotel adjacent to the Regional Council offices threatened to fall onto the offices and ECC. Once the composite Christchurch Coordination Centre was established on 23 February the CDEM Group Controllers and ECC personnel relocated to the City Art Gallery to supplement the management personnel available to the National Controller. As per the protocols of New Zealand's
Coordinated Incident Management System The New Zealand Co-ordinated Incident Management System (CIMS) is New Zealand's system for managing the response to an incident involving multiple responding agencies. Its developers based the system on California's Incident Command System (ICS) ...
, the Civil Defence Emergency Management Act, and the National Civil Defence Emergency Management Plan and Guide, Civil Defence Emergency Management became lead agency—with the Director of the Ministry of Civil Defence & Emergency Management John Hamilton as National Controller. CDEM were supported by local authorities, New Zealand Police, Fire Service, Defence Force and many other agencies and organisations.
Gerry Brownlee Gerard Anthony Brownlee (born 4 February 1956) is a New Zealand politician of the New Zealand National Party. He has been a Member of Parliament since 1996, was Leader of the House, Minister for Canterbury Earthquake Recovery and Minister of ...
, a
Cabinet Minister A minister is a politician who heads a ministry, making and implementing decisions on policies in conjunction with the other ministers. In some jurisdictions the head of government is also a minister and is designated the ‘prime minister’, ...
, had his regular portfolios distributed amongst other cabinet ministers so that he could focus solely on earthquake recovery.


Establishment of Red Zone

A
Central City Red Zone The Central City Red Zone, also known as the CBD Red Zone, was a public exclusion zone in the Christchurch Central City implemented after the 22 February 2011 Christchurch earthquake. After February 2013, it was officially renamed the CBD Rebuil ...
was established on the day of the earthquake as a public exclusion zone in central Christchurch. Both COGIC, French Civil Protection and the American
USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...
requested the activation of the
International Charter on Space and Major Disasters The International Charter "Space and Major Disasters" is a non-binding charter which provides for the charitable and humanitarian acquisition and transmission of satellite data to relief organizations in the event of major disasters. Initiated by ...
on the behalf of
MCDEM The National Emergency Management Agency (NEMA; Māori language, Māori: ''Te Rākau Whakamarumaru'') is the public service department of New Zealand responsible for providing leadership and support around national, local and regional emergencie ...
New Zealand, thus readily providing satellite imagery for aid and rescue services.


Police

Christchurch Police were supplemented by staff and resources from around the country, along with a 323-strong contingent of Australian Police, who were sworn in as New Zealand Police on their arrival, bringing the total number of officers in the city to 1200. Many of them received standing ovations from appreciative locals as they walked through Christchurch Airport upon arrival. Alongside regular duties, the police provided security cordons, organised evacuations, supported search and rescue teams, missing persons and family liaison, and organised media briefings and tours of the affected areas. They also provided forensic analysis and evidence gathering at fatalities and Disaster Victim Identification (DVI) teams, working closely with pathologists, forensic dentists and scientists, and the
coroner A coroner is a government or judicial official who is empowered to conduct or order an inquest into Manner of death, the manner or cause of death, and to investigate or confirm the identity of an unknown person who has been found dead within th ...
at the emergency mortuary established at
Burnham Military Camp Burnham, also known as Burnham Camp, is the largest army base in New Zealand's South Island. It is located 28 kilometres south of Christchurch on the Canterbury Plains in the Selwyn District, close to the town of Dunsandel. Burnham was named af ...
. They were aided by DVI teams from Australia, UK, Thailand Taiwan and Israel.


Search and rescue

The New Zealand Fire Service coordinated search and rescue, with support from the Urban Search and Rescue (USAR) teams from New Zealand, Australia, United Kingdom, United States, Japan, Taiwan, China and Singapore, totalling 150 personnel from New Zealand and 429 from overseas. They also responded to fires, serious structural damage reports, and landslides working with structural engineers, seismologists and geologists, as well as construction workers, crane and digger operators and demolition experts. NSW Task Force 1, a team of 72 urban search and rescue specialists from
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
, Australia was sent to Christchurch on two RAAF C-130J Hercules, arriving 12 hours after the quake. A second team of 70 from Queensland, Queensland Task Force 1, (including three
sniffer dogs A detection dog or sniffer dog is a dog that is trained to use its senses to detect substances such as explosives, illegal drugs, wildlife scat, currency, blood, and contraband electronics such as illicit mobile phones. The sense most used by d ...
), was sent the following day on board a RAAF
C-17 The McDonnell Douglas/Boeing C-17 Globemaster III is a large military transport aircraft that was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two ...
. A team of 55
Disaster Assistance and Rescue Team The Disaster Assistance and Rescue Team (DART) is the elite unit of the Singapore Civil Defence Force (SCDF) that specialises in complex incidents such as technical rescue, urban search and rescue, Search and rescue, water rescue operations and pr ...
members from the Singapore Civil Defence Force were sent. The United States sent
Urban Search and Rescue California Task Force 2 Urban Search and Rescue California Task Force 2 or CA-TF2 is a FEMA Urban Search and Rescue Task Force based in Los Angeles County, California. CA-TF2 is sponsored by the Los Angeles County Fire Department. CA-TF2 is one of two Task Forces that ...
, a 74-member heavy rescue team consisting of firefighters and paramedics from the Los Angeles County Fire Department, doctors, engineers and 26 tons of pre-packaged rescue equipment. Japan sent 70 search-and-rescue personnel including specialists from the coastguard, police and fire fighting service, as well as three sniffer dogs. The team left New Zealand earlier than planned due to the 9.0 earthquake which struck Japan on 11 March 2011. The United Kingdom sent a 53 strong search and rescue team including nine Welsh firefighters who had assisted the rescue effort during the 2010 Haiti earthquake. Taiwan sent a 22-member team from the National Fire Agency, along with two tons of specialist search and rescue equipment. China sent a 10-member specialist rescue team.


Defence forces

The
New Zealand Defence Force The New Zealand Defence Force (NZDF; mi, Te Ope Kātua o Aotearoa, "Line of Defence of New Zealand") are the armed forces of New Zealand. The NZDF is responsible for the protection of the national security of New Zealand and her realm, prom ...
—staging their largest-ever operation on New Zealand soil— provided logistics, equipment, transport, airbridges, evacuations, supply and equipment shipments, survey of the Port and harbour, and support to the agencies, including meals; they assisted the Police with security, and provided humanitarian aid particularly to Lyttelton, which was isolated from the city in the first days. Over 1400 Army, Navy and Air Force personnel were involved, and Territorials (Army Reserve) were called up. They were supplemented by 116 soldiers from the
Singapore Army The Singapore Army is the land service branch of the Singapore Armed Forces (SAF). The largest of the four branches of the SAF, the Singapore Army traces its origins to the 1st Battalion, Singapore Infantry Regiment (1 SIR), which was formed i ...
, in Christchurch for a training exercise at the time of the earthquake, who assisted in the cordon of the city. The
Royal New Zealand Air Force The Royal New Zealand Air Force (RNZAF) ( mi, Te Tauaarangi o Aotearoa, "The Warriors of the Sky of New Zealand"; previously ', "War Party of the Blue") is the aerial service branch of the New Zealand Defence Force. It was formed from New Zeala ...
provided an
air bridge ''Air Bridge'' is a 1951 thriller novel by the British writer Hammond Innes. It is set during the Berlin Airlift, and features a former RAF pilot now on the run from the police after becoming involved in shady activities after the war. Like all of ...
between Christchurch and Wellington using two
Boeing 757 The Boeing 757 is an American narrow-body airliner designed and built by Boeing Commercial Airplanes. The then-named 7N7, a twinjet successor for the 727 (a trijet), received its first orders in August 1978. The prototype completed its mai ...
and three
C-130 Hercules The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed Corporation, Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 ...
, and bringing in emergency crews and equipment and evacuating North Island residents and tourists out of Christchurch. One
P-3 Orion The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Lockheed based it on the L-188 Electra commercial airliner.
Bell UH-1H The Bell UH-1 Iroquois (nicknamed "Huey") is a utility military helicopter designed and produced by the American aerospace company Bell Helicopter. It is the first member of the prolific Huey family, as well as the first turbine-powered hel ...
Iroquois helicopters were also used to transport Police, VIP's and aid to locations around Christchurch. Three RNZAF
Beechcraft Super King Air The Beechcraft Super King Air family is part of a line of twin-turboprop aircraft produced by Beechcraft. The Model 200 and Model 300 series were originally marketed as the "Super King Air" family; the "Super" designation was dropped in 1996. ...
aircraft were also used to evacuate people from Christchurch. The crew of the Navy ship ''Canterbury'', in Lyttelton harbour at the time of the earthquake, provided meals for 1,000 people left homeless in that town, and accommodation for a small number of locals. The Royal Australian Air Force also assisted with air lifts. On one of their journeys, an RAAF Hercules sustained minor damage in an aftershock. The army also operated desalination plants to provide water to the eastern suburbs.


Medical services

The emergency department of
Christchurch Hospital Christchurch Hospital is the largest tertiary hospital in the South Island of New Zealand. The public hospital is in the centre of Christchurch city, on the edge of Hagley Park, and serves the wider Canterbury region. The Canterbury District Heal ...
treated 231 patients within one hour of the earthquake. The department responded to the situation by activating their crisis plan, forming 20 trauma teams. After a downturn in demand, a second wave of patients started arriving, many with much more severe injuries. Staff were grateful that they did not have to employ triage, but were able to deal with all patients. A field hospital providing 75 beds was set up in the badly affected eastern suburbs on 24 February. It was equipped to provide triage, emergency care, maternity, dental care, isolation tents for gastroenteritis, and to provide primary care since most general practices in the area were unable to open. Australia's foreign minister Kevin Rudd told ''
Sky News Sky News is a British free-to-air television news channel and organisation. Sky News is distributed via an English-language radio news service, and through online channels. It is owned by Sky Group, a division of Comcast. John Ryley is the hea ...
'' that New Zealand's
Foreign Affairs Minister In many countries, the Ministry of Foreign Affairs is the government department responsible for the state's diplomacy, bilateral, and multilateral relations affairs as well as for providing support for a country's citizens who are abroad. The entit ...
Murray McCully had asked for further help from Australia. He said Australia would send counsellors over and a disaster medical assistance team comprising 23 emergency and surgical personnel.


Humanitarian and welfare services

Humanitarian support and welfare were provided by various agencies, in particular the
New Zealand Red Cross New Zealand Red Cross or Ripeka Whero Aotearoa is a humanitarian organisation, which has more than 15,000 members and volunteers. In New Zealand, Red Cross delivers core community services, such as Meals on Wheels, Community Transport, Refugee ...
and the
Salvation Army Salvation (from Latin: ''salvatio'', from ''salva'', 'safe, saved') is the state of being saved or protected from harm or a dire situation. In religion and theology, ''salvation'' generally refers to the deliverance of the soul from sin and its c ...
. Welfare Centres and support networks were established throughout the city. Some government departments and church groups provided grants and assistance. Some residents went several days without official contact, so neighbours were encouraged to attend to those around them. Official visitation teams were organised by Civil Defence and there were engineers or assessors from EQC. The primarily wilderness all-volunteer search and rescue organisation, LandSAR, deployed 530 people to the city to perform welfare checks. Over the course of a week, LandSAR teams visited 67,000 premises.


Infrastructure and services

The 66 kV subtransmission cables supplying Dallington and New Brighton zone substations from Transpower's Bromley substation were damaged beyond repair, which necessitated the erection of temporary 66  kV overhead lines from Bromley to Dallington and Bromley to New Brighton to get power into the eastern suburbs. Power had been restored to 82% of households within five days, and to 95% within two weeks. Electricity distribution operator Orion later stated the power outages caused by the earthquake added to 3261
SAIDI A Ṣa‘īdī (, Coptic: ⲣⲉⲙⲣⲏⲥ ''Remris'') is a person from Upper Egypt (, Coptic: ⲙⲁⲣⲏⲥ ''Maris''). Etymology The word literally means "from Ṣa‘īd" (i.e. Upper Egypt), and can also refer to a form of music orig ...
minutes, or equivalent to the entire city being without power for 54 hours and 21 minutes.


Response

On the day of the earthquake, Prime Minister John Key said that 22 February, "...may well be New Zealand's darkest day", and
Mayor of Christchurch The Mayor of Christchurch is the head of the municipal government of Christchurch, New Zealand, and presides over the Christchurch City Council. The mayor is directly elected using a First Past the Post electoral system. The current mayor, Phil ...
Bob Parker warned that New Zealanders are "going to be presented with statistics that are going to be bleak". Generators were donated, and telephone companies established emergency communications and free calls. The army provided desalination plants, and bottled supplies were sent in by volunteers and companies. With limited water supplies for firefighting, a total fire ban was introduced, and the fire service brought in water tankers from other centres. Mains water supply was re-established to 70% of households within one week. Waste water and sewerage systems were severely damaged. Thousands of portaloos and
chemical toilet A chemical toilet collects human excreta in a holding tank and uses chemicals to minimize odors. They do not require a connection to a water supply and are used in a variety of situations. These toilets are usually, but not always, self-containe ...
s from throughout New Zealand and overseas were brought into the city. Community laundries were set up in affected suburbs. Portable shower units were also established in the eastern suburbs. Thousands of people helped with the clean-up efforts—involving the removal of over 200,000 tonnes of liquefaction silt—including Canterbury University's
Student Volunteer Army The Student Volunteer Army (SVA) is a New Zealand student movement born from a Facebook page started following the 2011 Christchurch earthquake. The network has no military affiliation and is focused on facilitating community action through yout ...
which was created in response to the earthquake that September and the Federated Farmers' "
Farmy Army Federated Farmers of New Zealand is a lobby and advocacy group for all farmers: arable including fruit and vegetables, dairy and meat and their often remote communities. It has a network of 24 regional organisations and six industry groups. Fed ...
". The "Rangiora Earthquake Express" provided over 250 tonnes of water, medical supplies, and food, including hot meals, from nearby
Rangiora Rangiora is the largest town and seat of the Waimakariri District, in Canterbury, New Zealand. It is north of Christchurch, and is part of the Christchurch metropolitan area. With an estimated population of Rangiora is the 30th largest urba ...
by helicopter and truck.


International offers of support

Australian Prime Minister
Julia Gillard Julia Eileen Gillard (born 29 September 1961) is an Australian former politician who served as the 27th prime minister of Australia from 2010 to 2013, holding office as leader of the Australian Labor Party (ALP). She is the first and only ...
offered Australia's assistance. The Australian Government also pledged A$5 million (
NZ$ The New Zealand dollar ( mi, tāra o Aotearoa; sign: $, NZ$; code: NZD) is the official currency and legal tender of New Zealand, the Cook Islands, Niue, the Ross Dependency, Tokelau, and a British territory, the Pitcairn Islands. Within New Zea ...
6.7 million) to the Red Cross Appeal. On 1 March, it was announced that the New South Wales Government would be donating A$1 million (NZ$1.3 million) to the victims of the Christchurch earthquake. The UN and the
European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been des ...
offered assistance.
Kamalesh Sharma Kamalesh Sharma (born 30 September 1941) is an Indian diplomat. He was the fifth Secretary General of the Commonwealth of Nations from 2008 to 2016, having previously served as the High Commissioner for India in London. He has served as the Ch ...
, Commonwealth Secretary-General, sent a message of support to the Prime Minister and stated "our heart and condolences go immediately to the bereaved." He added that the thoughts and prayers of the Commonwealth were with the citizens of New Zealand, and Christchurch especially. Sixty-six Japanese USAR members and three specialist search and rescue dogs arrived in Christchurch within two days of the February earthquake. They started work immediately in a multi-agency response to the collapse of the CTV Building on Madras Street. Many of the people trapped in that building were Japanese and other foreign English language students. Canadian Prime Minister
Stephen Harper Stephen Joseph Harper (born April 30, 1959) is a Canadian politician who served as the 22nd prime minister of Canada from 2006 to 2015. Harper is the first and only prime minister to come from the modern-day Conservative Party of Canada, ...
released a statement saying: "The thoughts and prayers of Canadians are with all those affected by the earthquake. Canada is standing by to offer any possible assistance to New Zealand in responding to this natural disaster."
David Cameron David William Donald Cameron (born 9 October 1966) is a British former politician who served as Prime Minister of the United Kingdom from 2010 to 2016 and Leader of the Conservative Party from 2005 to 2016. He previously served as Leader o ...
, Prime Minister of the United Kingdom, issued a statement and sent SMS text messages to
Commonwealth A commonwealth is a traditional English term for a political community founded for the common good. Historically, it has been synonymous with "republic". The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the ...
prime ministers. In his formal statement, he commented that the loss of life was "dreadful" and the "thoughts and prayers of the British people were with them".
Ban Ki-Moon Ban Ki-moon (; ; born 13 June 1944) is a South Korean politician and diplomat who served as the eighth secretary-general of the United Nations between 2007 and 2016. Prior to his appointment as secretary-general, Ban was his country's Minister ...
, Secretary-General of the United Nations, issued a statement on behalf of the UN expressing his "deep sadness" and stressed the "readiness of the United Nations to contribute to its efforts in any way needed". China gave US$500,000 to the earthquake appeal, and Chinese Premier
Wen Jiabao Wen Jiabao (born 15 September 1942) is a retired Chinese politician who served as the Premier of the State Council from 2003 to 2013. In his capacity as head of government, Wen was regarded as the leading figure behind China's economic policy ...
expressed his deep condolences to New Zealand. Twenty Chinese students were reported missing following the quake.


Other messages of support

The Queen of New Zealand said she was "utterly shocked" and her "thoughts were with all those affected". Her son and heir to the New Zealand throne, The Prince of Wales, also said to New Zealand's governor-general and prime minister: "My wife and I were horrified when we heard the news early this morning... The scale of the destruction all but defies belief when we can appreciate only too well how difficult it must have been struggling to come to terms with last year's horror ... Our deepest sympathy and constant thoughts are with you and all New Zealanders."
Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the U ...
, President of the United States, issued a statement from the White House Press Office on the disaster by way of an official announcement that "On behalf of the American people, Michelle and I extend our deepest condolences to the people of New Zealand and to the families and friends of the victims in Christchurch, which has suffered its second major earthquake in just six months... As our New Zealand friends move forward, may they find some comfort and strength in knowing that they will have the enduring friendship and support of many partners around the world, including the United States." The President also made a call to Prime Minister Key.
Pope Benedict XVI Pope Benedict XVI ( la, Benedictus XVI; it, Benedetto XVI; german: link=no, Benedikt XVI.; born Joseph Aloisius Ratzinger, , on 16 April 1927) is a retired prelate of the Catholic church who served as the head of the Church and the sovereign ...
issued an announcement on the earthquake in a statement during his Wednesday audience on 23 February, stating that he was praying for the dead and the injured victims of the devastating earthquake, and encouraging those involved in the rescue efforts.


Fundraising and charity events

Various sporting events were set up to raise money, such as the "Fill the Basin" cricket match at the Basin Reserve, featuring ex-New Zealand internationals,
All Black The New Zealand national rugby union team, commonly known as the All Blacks ( mi, Ōpango), represents New Zealand in men's international rugby union, which is considered the country's national sport. The team won the Rugby World Cup in 1987, ...
s and actors from '' The Hobbit'', which raised more than $500,000. New Zealand cricket team captain
Daniel Vettori Daniel Luca Vettori (born 27 January 1979) is a New Zealand cricket coach and former cricketer who played for the New Zealand national cricket team. He was the 200th player to win their Test cricket cap for New Zealand. Vettori was the young ...
put his personal memorabilia up for auction. All Black
Sonny Bill Williams Sonny Bill Williams (born 3 August 1985) is a New Zealand heavyweight boxer, and a former professional rugby league and rugby union player and as of recently is working for Stan Sports. He is only the List of dual-code rugby internationals#New ...
and Sky Television both made large donations from Williams' fourth boxing bout which was dubbed "The Clash For Canterbury". Several charity concerts were held both in New Zealand and overseas including a previously unscheduled visit to New Zealand by American rock group
Foo Fighters Foo Fighters are an American rock band formed in Seattle in 1994. Foo Fighters was initially formed as a one-man project by former Nirvana drummer Dave Grohl. Following the success of the eponymous debut album, Grohl (lead vocals, guitar) re ...
, who performed a Christchurch benefit concert in Auckland on 22 March 2011 and raised more than $350,000 for the earthquake relief fund. Local jazz flautist
Miho Wada Miho Wada is a Japanese-born jazz musician from New Zealand. She plays flute and both alto and tenor saxophone, and is a founding member of Miho's Jazz Orchestra, which has toured internationally. She has been nicknamed "the flute ninja" for her fa ...
formed the ensemble Miho's Jazz Orchestra to raise money for recovery efforts.


Memorial services and commemorative events

A national memorial service was held on 18 March at
North Hagley Park Hagley Park is the largest urban open space (164.637 hectares)provincial holiday for Canterbury, which required the passing of the
Canterbury Earthquake Commemoration Day Act 2011 The Canterbury Earthquake Commemoration Day Act 2011 is an Act of Parliament passed into law in New Zealand in 2011. It created a one-off public holiday in parts of Canterbury to commemorate the effects of the Canterbury earthquakes, starting with ...
to legislate.
Prince William William, Prince of Wales, (William Arthur Philip Louis; born 21 June 1982) is the heir apparent to the British throne. He is the elder son of King Charles III and his first wife Diana, Princess of Wales. Born in London, William was educat ...
, made a two-day trip to the country to tour the areas affected by the earthquake, attended on the Queen's behalf and made an address during the service. New Zealand's governor-general, Sir Anand Satyanand, attended, along with John Key, Bob Parker, and a number of local and international dignitaries. Australia's official delegation included
Governor-General Governor-general (plural ''governors-general''), or governor general (plural ''governors general''), is the title of an office-holder. In the context of governors-general and former British colonies, governors-general are appointed as viceroy t ...
Quentin Bryce, Prime Minister
Julia Gillard Julia Eileen Gillard (born 29 September 1961) is an Australian former politician who served as the 27th prime minister of Australia from 2010 to 2013, holding office as leader of the Australian Labor Party (ALP). She is the first and only ...
, and
Opposition Leader The Leader of the Opposition is a title traditionally held by the leader of the largest political party not in government, typical in countries utilizing the parliamentary system form of government. The leader of the opposition is typically se ...
Tony Abbott. A second memorial service was held at the Canterbury Earthquake National Memorial on 22 February 2021 to mark ten years since the earthquake and was attended by Christchurch Mayor
Lianne Dalziel Lianne Audrey Dalziel (; born 7 June 1960) is a New Zealand politician and former Mayor of Christchurch. Prior to this position, she was a member of the New Zealand Parliament for 23 years, serving as Minister of Immigration, Commerce, Minister ...
,
Governor-General Governor-general (plural ''governors-general''), or governor general (plural ''governors general''), is the title of an office-holder. In the context of governors-general and former British colonies, governors-general are appointed as viceroy t ...
Dame Patsy Reddy Dame Patricia Lee Reddy (born 17 May 1954) is a New Zealand lawyer and businesswoman who served as the 21st governor-general of New Zealand from 2016 to 2021. Before becoming governor-general, Reddy was a partner of a law firm, headed a major ...
and Prime Minister Jacinda Ardern. A minute's silence was held at 12:51pm, the exact time the earthquake struck, and the names of all the victims were read aloud by Christchurch residents and first responders, before a wreath laying ceremony at the memorial. The River of Flowers ceremony, in which members of the public drop flowers into the Avon River in memory of those who died during the earthquake, was inaugurated on the first anniversary of the event (22 February 2012) and remains an annual commemorative ritual.


Commission of Inquiry

In March 2011 the government established The Canterbury Earthquakes Royal Commission to report on the causes of building failure as a result of the earthquakes as well as the adequacy of building codes and other standards for buildings in New Zealand Central Business Districts. The Commission examined issues with specific reference to the Canterbury Television (CTV), Pyne Gould Corporation (PGC), Forsyth Barr and Hotel Grand Chancellor buildings. It excluded the investigation of any questions of liability, the earthquake search and rescue effort, and the rebuilding of the city. The commission was chaired by High Court judge Justice Mark Cooper with support from two other commissioners, engineers Sir Ron Carter and Professor Richard Fenwick. They took into account a technical investigation undertaken by the Department of Building and Housing. The inquiry began in April 2011 and was completed in November 2012. The Royal Commission made a total of 189 recommendations and found that the Canterbury Television building should not have been granted a building permit by the Christchurch City Council.


Recovery


Canterbury Earthquake Recovery Authority

On 29 March 2011, Prime Minister John Key and Christchurch Mayor Bob Parker announced the creation of the Canterbury Earthquake Recovery Authority (CERA) to manage the earthquake recovery, co-operating with the government, local councils and residents, under chief executive
John Ombler John Stewart Ombler is a New Zealand public servant. He served as deputy State Services Commissioner from 2008 until 2014, and briefly in 2019, and as the controller of the all-of-government response during the 2020 COVID-19 pandemic in New Zea ...
.


Housing

With an estimated 10,000 houses requiring demolition and over 100,000 damaged, plans were developed for moderate-term temporary housing. Approximately 450 fully serviced
mobile home A mobile home (also known as a house trailer, park home, trailer, or trailer home) is a prefabricated structure, built in a factory on a permanently attached chassis before being transported to site (either by being towed or on a trailer). Us ...
s would be located on sites across the city including Canterbury Agricultural Park and
Riccarton Racecourse Riccarton Park Racecourse is the main thoroughbred horse racecourse for the Christchurch city area in New Zealand. History The Canterbury Jockey Club was established in 1854 and held its first meeting at Hagley Park in Easter 1855. The Riccarton ...
. The
Department of Building and Housing The Department of Building and Housing (Māori: ''Te Tari Kaupapa Whare'') was a government agency within the New Zealand government. Established in 2004 out of the former Ministry of Housing, it was disestablished in 2012. The department's forme ...
also released a plan for the construction of 500 modular homes. While emergency repairs were performed on damaged houses by Fletcher Construction, rebuilding would be delayed by the need for full land assessments, with the possibility that some of the worst-affected areas in the eastern suburbs might need to be abandoned due to land depression and severe liquefaction, with the residents offered relocation to new subdivisions under their EQC insurance policies.


Schools and universities

On the day of the earthquake, the main secondary school teachers' union, the Post Primary Teachers Association, had arranged a paid union meeting to be held that afternoon for members in the Christchurch area. This meant most secondary schools in the city had closed early that day and most students had returned home before the earthquake hit, by coincidence limiting potential casualties. Canterbury University partially reopened on 14 March 2011, with many lectures held in tents and marquees while work was carried out on university buildings. All courses expected to resume by 28 March, with plans for the April break to be shortened by two weeks to make up for lost time. The
UC CEISMIC Canterbury Earthquakes Digital Archive The UC CEISMIC Canterbury Earthquakes Digital Archive programme was established in 2011 with the aim of preserving the knowledge, memories and earthquake experiences of people of the Canterbury region. The website provides federated access to a broa ...
programme was established in 2011 by
University of Canterbury The University of Canterbury ( mi, Te Whare Wānanga o Waitaha; postnominal abbreviation ''Cantuar.'' or ''Cant.'' for ''Cantuariensis'', the Latin name for Canterbury) is a public research university based in Christchurch, New Zealand. It was ...
Professor Paul Millar.Lois Cairns
"Canterbury Quake to be with us Forever"
,
Stuff.co.nz
'', 23 October 2011. Retrieved 7 April 2014.
It is a project of the Digital Humanities department, with the aim of preserving the knowledge, memories and earthquake experiences of people of the Canterbury region. 163 primary and secondary schools were affected by the earthquake, most of which were closed for three weeks; 90 had full structural clearance and were able to reopen, 24 had reports indicating further assessment and 11 were seriously damaged. Site-sharing plans were made to enable affected schools to relocate, while 9 "learning hubs" were established throughout the city to provide resources and support for students needing to work from home. Some students relocated to other centres – by 5 March, a total of 4879 Christchurch students had enrolled in other schools across New Zealand. Wanaka Primary School alone had received 115 new enrolments as Christchurch families moved to their holiday homes in the town. Due to the extensive damage of a number of secondary schools, many were forced to share with others, allowing one school to use the ground in the morning and the other in the afternoon. This included
Shirley Boys' High School Shirley Boys' High School (known as SBHS) is a single sex state (public) secondary school in Christchurch, New Zealand. It was originally situated on a 6 hectare site in the suburb of Shirley, but in April 2019 moved, along with Avonside ...
sharing with
Papanui High School Papanui High School (PHS) is a state secondary school located in Papanui, Christchurch, New Zealand. The school was founded as Papanui Technical College in 1936 and was officially renamed Papanui High School in 1949. The first principal of the sch ...
,
Linwood College Te Aratai College (founded as Linwood High School, then renamed Linwood College from 2000–2021) is a co-educational secondary school in Linwood, a suburb of Christchurch, New Zealand. History Founded in the early 1950s to cater for the secon ...
sharing with
Cashmere High School Cashmere High School ( mi, Te iringa o Kahukura) is a state coeducational secondary school, located in southern Christchurch, New Zealand. It was opened in 1956 in response to population growth in southern Christchurch during the 1950s. The sch ...
and
Avonside Girls High School Avonside Girls' High School is a large urban high school in Christchurch, New Zealand, with more than 1,000 girls from Year 9 to Year 13. It was formerly in the suburb of Avonside but moved in 2019, along with Shirley Boys' High School, to the f ...
sharing with
Burnside High School Burnside High School ( mi, Te Kura o Waimairi-iri) is a state co-educational secondary school located in the suburb of Burnside in Christchurch, New Zealand. With a roll of students, it is the largest school in New Zealand outside Auckland, and ...
and Marian College sharing with St Bedes College and Unlimited Paenga Tawhiti sharing with Halswell Residential College. Linwood College and Shirley Boys' High School moved back to their original sites on 1 August (the first day of
Term 3 An academic term (or simply term) is a portion of an academic year, the time during which an educational institution holds classes. The schedules adopted vary widely. In most countries, the academic year begins in late summer or early autumn and ...
), and 13 September 2011 respectively. Avonside Girls' High School returned to its original site at the start of 2012. Marian College did not return to the original site in Shirley but instead moved to a site at Cathedral College on Barbadoes Street.
Unlimited Paenga Tawhiti Ao Tawhiti or Ao Tawhiti Unlimited Discovery (abbreviated "ATUD") is a state area school in Christchurch, New Zealand. It was established by the merging of two separate Christchurch inner city schools; the primary school Discovery 1 (unofficiall ...
could not return to its central city buildings due to demolitions and it has no long term site. In September 2012, Minister of Education Hekia Parata announced plans to permanently close and/or merge a number of schools due to falling roll numbers and quake damage. The proposals were heavily criticised for relying on incorrect information, leading one school, Phillipstown Primary, to seek a judicial review over its proposed merger with Woolston Primary. The court subsequently ruled in favour of Phillipstown and overturned the merger. The plans were confirmed in February 2013, with seven schools closing, 10 schools merging into five (not including the overturned Phillipstown-Woolston merger), and three high schools taking on additional year levels.


Other impact


Disruptions to sport

Christchurch was set to host five pool matches and two quarter finals of the
2011 Rugby World Cup The 2011 Rugby World Cup was the seventh Rugby World Cup, a quadrennial international rugby union competition inaugurated in 1987. The International Rugby Board (IRB) selected New Zealand as the host country in preference to Japan and South Af ...
. The
International Rugby Board World Rugby is the world governing body for the sport of rugby union. World Rugby organises the Rugby World Cup every four years, the sport's most recognised and most profitable competition. It also organises a number of other international rug ...
and the New Zealand Rugby World Cup organisers announced in March 2011 that the city would be unable to host the World Cup matches. The quarter final matches were moved to Auckland. New Zealand Cricket's offices were damaged by the earthquake. Some matches needed to be rescheduled. The
Super Rugby Super Rugby is a men's professional rugby union club competition involving teams from Australia, Fiji, New Zealand, and the Pacific Islands. It previously included teams from Argentina, Japan, and South Africa. Building on various Southern Hem ...
Round 2 match between the Crusaders and Hurricanes scheduled for 26 February 2011 at Westpac Stadium in
Wellington Wellington ( mi, Te Whanganui-a-Tara or ) is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the second-largest city in New Zealand by me ...
was abandoned. The Crusaders' first two home matches of the season, originally to be played in Christchurch, were moved to Trafalgar Park in Nelson. The Crusaders played their entire home schedule away from Christchurch,. In the ANZ Netball Championship, the earthquake caused significant damage to the
Canterbury Tactix Mainland Tactix are a New Zealand netball team based in Christchurch, Canterbury. Between 1998 and 2007, as Canterbury Flames, they played in the Coca-Cola Cup/National Bank Cup league. Between 2008 and 2016, they played in the ANZ Championsh ...
's main home venue,
CBS Canterbury Arena Christchurch Arena is an indoor arena in Christchurch, New Zealand. It is located in the suburb of Addington. It has gone through a series of name changes, the most recent of which prior to its current name having been Horncastle Arena. D ...
, and the franchise's head office at Queen Elizabeth II Park. The team's round three match against the Northern Mystics in Auckland was postponed, while their round four home match against the Waikato Bay of Plenty Magic was moved to the
Energy Events Centre The Energy Events Centre is a venue for sports, conferences, exhibitions, banquets and concerts in Rotorua, New Zealand. The centre can hold up to 3,500 people and was finished in February 2007. The driving force behind the establishment of the ...
in
Rotorua Rotorua () is a city in the Bay of Plenty region of New Zealand's North Island. The city lies on the southern shores of Lake Rotorua, from which it takes its name. It is the seat of the Rotorua Lakes District, a territorial authority encompass ...
. AMI Stadium was going to host the
rugby league Rugby league football, commonly known as just rugby league and sometimes football, footy, rugby or league, is a full-contact sport played by two teams of thirteen players on a rectangular field measuring 68 metres (75 yards) wide and 112 ...
ANZAC Test, however, on 4 March it was announced the match would be moved to
Skilled Park A skill is the learned ability to act with determined results with good execution often within a given amount of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills. For example, in the domain of wo ...
on the
Gold Coast Gold Coast may refer to: Places Africa * Gold Coast (region), in West Africa, which was made up of the following colonies, before being established as the independent nation of Ghana: ** Portuguese Gold Coast (Portuguese, 1482–1642) ** Dutch G ...
. The Canterbury Rugby League cancelled their pre-season competition. The 2011
Inter Dominion :''for winners of the Inter Dominion see: Inter Dominion Pacing Championship and Inter Dominion Trotting Championship'' The Inter Dominion is a harness racing competition that has been contested since 1936 in Australia and New Zealand. It is of ...
harness racing series was scheduled to be held at Addington Raceway in March and April however the series was instead contested in
Auckland Auckland (pronounced ) ( mi, Tāmaki Makaurau) is a large metropolitan city in the North Island of New Zealand. The List of New Zealand urban areas by population, most populous urban area in the country and the List of cities in Oceania by po ...
. The public grandstand at Addington was later demolished due to damage from the earthquake and aftershocks.


Postponement of census

The chief executive of Statistics New Zealand,
Geoff Bascand Geoff Bascand was the Deputy Governor and Head of Operations at the Reserve Bank of New Zealand. He was Government Statistician and the Chief Executive of Statistics New Zealand until May 2013.Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
, and in 1941 due to
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
. Much of the NZ$90 million cost of the 2011 census was written off. The census was ultimately deferred to 5 March 2013.


Population loss

In the year to June 2011, the population of Christchurch had fallen by 8,900 people or 2.4% of its population, with a historic annual population growth of 1%. It is estimated that 10,600 people moved away from Christchurch, with the 1,700 people difference to the population loss explained through some people moving to Christchurch. Statistics New Zealand expects Christchurch's population growth rate to return to pre-earthquake levels. The surrounding districts, Selwyn and Waimakariri, have two of the three highest growth rates in New Zealand, at 2.2% and 1.6%, respectively. In October 2008, the population of the Christchurch main urban area, as defined by Statistics New Zealand, had for the first time exceeded the Wellington equivalent (at 386,100 versus 386,000), which made Christchurch the second largest city in New Zealand (after Auckland). The population loss caused by the earthquake reversed this, with the Wellington main urban area back in second position. Statistics New Zealand's main urban area definition for Christchurch includes Kaiapoi, which belongs to Waimakariri District, and
Prebbleton Prebbleton is a small town in the Selwyn District in the Canterbury Region of New Zealand. It is 11 km southwest of the centre of Christchurch and about 2 km south of the outlying industrial suburb of Hornby. Prebbleton dates back to ...
, which belongs to Selwyn District.
Porirua Porirua, ( mi, Pari-ā-Rua) a city in the Wellington Region of the North Island of New Zealand, is one of the four cities that constitute the Wellington metropolitan area. The name 'Porirua' is a corruption of 'Pari-rua', meaning "the tide swee ...
,
Upper Hutt Upper Hutt ( mi, Te Awa Kairangi ki Uta) is a city in the Wellington Region of New Zealand and one of the four cities that constitute the Wellington#Wellington metropolitan area, Wellington metropolitan area. Geography The Upper Hutt city cent ...
, and
Lower Hutt Lower Hutt ( mi, Te Awa Kairangi ki Tai) is a city in the Wellington Region of New Zealand. Administered by the Hutt City Council, it is one of the four cities that constitute the Wellington metropolitan area. It is New Zealand's sixth most p ...
, all outside of the Wellington City Council area, are included in the Wellington main urban area definition. Looking at territorial areas only, i.e. not including outlying urban areas from other districts, Christchurch continues to have a significantly larger population over Wellington.


Economic impact

In April 2013 the Government estimated the total cost of the rebuild would be as much as $40 billion, up from an earlier estimate of $30 billion. Some economists have estimated it will take the New Zealand economy 50 to 100 years to completely recover. The earthquake was the most damaging in a year-long earthquake swarm affecting the Christchurch area. It was followed by a large aftershock on 13 June (which caused considerable additional damage) and a series of large shocks on 23 December 2011. Finance Minister Bill English advised that the effects of the 2011 quake were likely to be more costly than the September 2010 quake. His advice was that the 2011 earthquake was a "new event" and that EQC's reinsurance cover was already in place after the previous 2010 event. New Zealand's
Earthquake Commission The Earthquake Commission, ( mi, Kōmihana Rūwhenua), is a New Zealand Crown entity that invests in natural disaster research and education as well as providing natural disaster insurance to residential property owners. In March 2022, a bill ...
(EQC), a government organisation, levies policyholders to cover a major part of the earthquake risk. The EQC further limits its own risk by taking out cover with a number of large
reinsurance Reinsurance is insurance that an insurance company purchases from another insurance company to insulate itself (at least in part) from the risk of a major claims event. With reinsurance, the company passes on ("cedes") some part of its own insu ...
companies, for example
Munich Re Munich Re Group or Munich Reinsurance Company (german: Münchener Rück; Münchener Rückversicherungs-Gesellschaft) is a German multinational insurance company based in Munich, Germany. It is one of the world's leading reinsurers. ERGO, a Muni ...
. The EQC pays out the first NZ$1.5 billion in claims, and the
reinsurance Reinsurance is insurance that an insurance company purchases from another insurance company to insulate itself (at least in part) from the risk of a major claims event. With reinsurance, the company passes on ("cedes") some part of its own insu ...
companies are liable for all amounts between NZ$1.5 billion and NZ$4 billion. The EQC again covers all amounts above NZ$4 billion. EQC chief executive Ian Simpson said that the $4 billion cap for each earthquake is unlikely to be exceeded by the costs of residential building and land repairs, so $3 billion would be left in the EQC's Natural Disaster Fund after payouts. Claims from the 2010 shock were estimated at NZ$2.75–3.5 billion. Prior to the 2010 quake, the EQC had a fund of NZ$5.93 billion according to the EQC 2010 Annual Report, with NZ$4.43 billion left prior to the 2011 quake, after taking off the NZ$1.5 billion cost. EQC cover for domestic premises entitles the holder to up to NZ$100,000 plus tax (GST) for each dwelling, with any further amount above that being paid by the policyholder's insurance company. For personal effects, EQC pays out the first NZ$20,000 plus tax. It also covers land damage within 8 metres of a home; this coverage is uncapped. Commercial properties are not insured by the EQC, but by private insurance companies. These insurers underwrite their commercial losses to reinsurers, who will again bear the brunt of these claims.
JPMorgan Chase & Co JPMorgan Chase & Co. is an American multinational investment bank and financial services holding company headquartered in New York City and incorporated in Delaware. As of 2022, JPMorgan Chase is the largest bank in the United States, the wo ...
say the total overall losses related to this earthquake may be US$12 billion. That would make it the third most costly earthquake event in history, after the 2011 Japan and 1994 California earthquakes. Earthquake Recovery Minister
Gerry Brownlee Gerard Anthony Brownlee (born 4 February 1956) is a New Zealand politician of the New Zealand National Party. He has been a Member of Parliament since 1996, was Leader of the House, Minister for Canterbury Earthquake Recovery and Minister of ...
echoed that fewer claims were expected through the EQC than for 2010. In the 2010 earthquake, 180,000 claims were processed as opposed to the expected 130,000 claims for the 2011 aftershock. The total number of claims for the two events was expected to be 250,000, as Brownlee explained that many of the claims were "overlapping". The Accident Compensation Corporation (ACC) announced it would be the largest single event they had paid out for, with an estimated 7,500 injury claims costing over $200 million. On 2 March 2011, John Key said he expected an
interest rate An interest rate is the amount of interest due per period, as a proportion of the amount lent, deposited, or borrowed (called the principal sum). The total interest on an amount lent or borrowed depends on the principal sum, the interest rate, th ...
cut to deal with the earthquake. The reaction to the statement sent the New Zealand dollar down. In January 2013 Earthquake Recovery Minister
Gerry Brownlee Gerard Anthony Brownlee (born 4 February 1956) is a New Zealand politician of the New Zealand National Party. He has been a Member of Parliament since 1996, was Leader of the House, Minister for Canterbury Earthquake Recovery and Minister of ...
said repairs to damaged homes to date had totalled more than $1 billion. A KPMG survey in March 2013 suggested as much as $1.5 billion could be sucked from the rebuild in fraud. In March 2013 a researcher at the University of Canterbury said after the quake, residents – particularly women – turned to comfort food and began eating unhealthily.


Mental health

The Christchurch earthquake of 2011 had widespread
mental health Mental health encompasses emotional, psychological, and social well-being, influencing cognition, perception, and behavior. It likewise determines how an individual handles stress, interpersonal relationships, and decision-making. Mental health ...
effects on the population.Dorahy, M.J., Rowlands, A., Renouf, C., Hanna, D., Britt, E., & Carter, J.D. (2015). Impact of average household income and damage exposure on post-earthquake distress and functioning, A community study following the February 2011 Christchurch earthquake. ''British Journal of Psychology'', 106, 526–543.Erskine, N., Daley, V., Stevenson, Su. Rhodes, B., & Becker, L. (2013). Smoking prevalence increases following Canterbury earthquakes. ''The Scientific World Journal''.Fergusson, D.M., Horwood, J., Boden, J.M., & Mulder, R.T. (2014). Impact of a major disaster on the mental health of a well-studied cohort. ''JAMA Psychiatry'', 71(9), 1025–1031.Fergusson, D.M., Boden, J.M., Horwood, L.J., & Mulder, R.T. (2015). Perceptions of distress and positive consequences following exposure to a major disaster amongst a well-studied cohort. ''Australian and New Zealand Journal of Psychiatry'', 49(4), 351–9.Kuijer, R.G., Marshall, E.M., & Bishop, A.N. (2014). Prospective predictors of short-term adjustment after the Canterbury earthquakes: Personality and depression. ''Psychological Trauma: Theory, Research, Practice and Policy'', 6(4), 361–9. Surgenor, L.J., Snell, D.L., & Dorathy, M.L. (2015). Posttraumatic stress symptoms in Police Staff 12–18 months after the Canterbury earthquakes. ''Journal of Traumatic Stress'', 28, 162–6. Research following the Christchurch earthquakes has shown that increasing exposure to the damage and trauma of a
natural disaster A natural disaster is "the negative impact following an actual occurrence of natural hazard in the event that it significantly harms a community". A natural disaster can cause loss of life or damage property, and typically leaves some econ ...
is correlated with an increase in depression, anxiety, and
post-traumatic stress disorder Post-traumatic stress disorder (PTSD) is a mental and behavioral disorder that can develop because of exposure to a traumatic event, such as sexual assault, warfare, traffic collisions, child abuse, domestic violence, or other threats on ...
(PTSD). Those with the most exposure suffer the most from mental health deficits, compared with those that are relatively unaffected. Increases in trauma exposure are related to increased dependence on alcohol and nicotine, as well as prescribed psychiatric medication. This information is important to consider when reacting to future earthquakes and other natural disasters. There is evidence that suggests that the mental health effects of natural disasters can be debilitating and detrimental to the community affected.Marshall, E.M., Frazier, P., Frankfurt, S., & Kuijer, R.G. (2015). Trajectories of posttraumatic growth and depreciation after two major earthquakes. ''Psychological Trauma: Theory, Research, Practice and Policy'', 7(2), 112–121. Evidence from research on the Christchurch earthquakes reveals that increased trauma exposure is not exclusively correlated with negative outcomes. Those with relatively high exposure to earthquake damage show an increase in positive effects, including an increase in personal strength, growth in social relationships, the bringing of families closer, and realizing what's important in life. It's thought that natural disasters, such as earthquakes, are able to induce these positive effects because they affect an entire community, in comparison to an event that targets only an individual. The damage on a community can lead members to engage in pro-social behaviors which are driven by empathy and desire to support others who have endured a similar traumatizing experience. Positive effects, such as a greater sense of community connection, can aide in helping the community heal as a whole. Implemented programs can use this knowledge to help survivors focus on the positive effects, possibly working with families to help them get through the disaster with the people they feel closest with. Predictors of poor mental health after a trauma, such as mental health status prior to a trauma and individual characteristics, can help determine those who will be more vulnerable to developing mental health problems. Those that exhibit lower mental health prior to an earthquake will be more likely to experience negative life changes than positive life changes with regard to personal strength. Depressive symptoms before a disaster can predict higher chances of developing PTSD following a trauma. People who exhibit lower mental health prior to the trauma don't adapt as well following trauma, and show higher levels of PTSD. Personality traits, such as
neuroticism In the study of psychology, neuroticism has been considered a fundamental personality trait. For example, in the Big Five approach to personality trait theory, individuals with high scores for neuroticism are more likely than average to be moody ...
and low
self-control Self-control, an aspect of inhibitory control, is the ability to regulate one's emotions, thoughts, and behavior in the face of temptations and impulses. As an executive function, it is a cognitive process that is necessary for regulating one's b ...
are associated with a lower sense of normality following an earthquake, however optimism is predictive of lower and less severe PTSD symptoms. Studying earthquakes has shown to be a difficult task when considering all the limitations created by natural disasters. Clinical interviews are difficult because of the widespread damage to infrastructure and roads, which leads to reliance on self-report. Self-report can introduce bias to results, leading to skewed data. Researchers are unable to reliably compare an individual's mental health status to their health status previous to the trauma because they must rely on retrospective self-report. Retrospective self-report is affected greatly by the individual's current state of distress. The displacement of large numbers of citizens following a trauma poses as a problem for researchers of natural disasters. It is predicted that the people who are displaced experience the worst of the damage, and therefore the reported levels of PTSD and depression are often lower than they would have been had the displaced citizens been available to collect data from. Because large number of citizens are being displaced, it is difficult to find a representative sample population. For example, after the Christchurch earthquakes, studies reported that older educated females of European New Zealand descent were over represented in their sample population, which isn't accurate of the Christchurch population as a whole. Researching the mental health effects of earthquakes and other disasters is important so communities can heal properly after experiencing a traumatic event. This is a difficult topic to research because fixing the physical damage from a disaster is usually the first step a city takes towards recovery. Each individual can react differently to traumatic events, and more research needs to be done to learn how to predict vulnerability and access the effects to find solutions that work best. Because it has been found that different demographics are affected differently, this also needs to be taken into account when finding solutions to aid recovery. Different demographics may benefit from different types of mental counseling to help them recover from trauma. It will be important to have information on a wide variety of demographic groups because the same mental health treatment will not help all of those affected by a trauma.


Screen portrayals

* ''When A City Falls'' (2011): feature-length documentary about the 2010 and 2011 quakes in Christchurch directed & produced by Gerard Smyth and released in cinemas in November 2011. * ''Hope and Wire'' (2014): 3-part television mini-series dramatising the 2011 Christchurch quake. Screened on TV3 in July 2014. * ''Sunday'' (2014): feature film set in Christchurch one year after the 2011 quake, depicting a young couple living amongst the re-building of the city.


See also

*
List of earthquakes in 2011 This is a list of earthquakes in 2011. Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for some other reason. All dates are listed according to UTC time. The 9.1 Tōhoku ear ...
*
List of earthquakes in New Zealand This is a list of large earthquakes that have occurred in New Zealand. Only earthquakes with a magnitude of 6.0 or greater are listed, except for a few that had a moderate impact. Aftershocks are not included, unless they were of great signifi ...
*
Earthquake Commission The Earthquake Commission, ( mi, Kōmihana Rūwhenua), is a New Zealand Crown entity that invests in natural disaster research and education as well as providing natural disaster insurance to residential property owners. In March 2022, a bill ...
*
Geology of the Canterbury Region Canterbury (New Zealand), Canterbury in New Zealand is the portion of the South Island to the east of the Southern Alps, Southern Alps / Kā Tiritiri o te Moana, from the Waiau Uwha River in the north, to the Waitaki River in the south (this is ...
*
List of disasters in New Zealand by death toll This is a list of New Zealand disasters by death toll, listing major disasters (excluding acts of war) which occurred in New Zealand and its territories or involved a significant number of New Zealand citizens, in a specific incident, where the ...
*
Christchurch Central Recovery Plan The Christchurch Central Recovery Plan, often referred to as the Blueprint, is the plan developed by the Fifth National Government of New Zealand for the recovery of the Christchurch Central City from a series of earthquakes, in particular the F ...
Similar earthquakes: *
2010 Canterbury earthquake The 2010 Canterbury earthquake (also known as the Darfield earthquake) struck the South Island of New Zealand with a moment magnitude of 7.1 at on , and had a maximum perceived intensity of X (''Extreme'') on the Mercalli intensity scale. Som ...
*
June 2011 Christchurch earthquake The June 2011 Christchurch earthquake was a shallow magnitude 6.0 earthquake that occurred on 13 June 2011 at 14:20 NZST (02:20 UTC). It was centred at a Hypocenter, depth of , about 5 km (3 mi) south-east of Christchurch, which had p ...
*
2016 Christchurch earthquake An earthquake occurred in Christchurch on 14 February 2016 at 1:13 p.m. local time (00:13 UTC) and initially recorded as 5.9 on the Richter scale, but subsequently reviewed as 5.7. Often referred to as the Valentine's Day earthquake, it was ...


References


Further reading

* *
Creusons plus!
" CHCH earthquake updates and stories in French fro
the French Blend
* Martin Van Beynen, ''Trapped: Remarkable Stories of Survival from the 2011 Canterbury Earthquake'', Penguin, 2012.


External links


Official response and recovery


Canterbury Earthquake
nbsp;– information for affected residents
Canterbury earthquake recovery
nbsp;– New Zealand Government website
Christchurch earthquake official statements
at the
New Zealand Police The New Zealand Police ( mi, Ngā Pirihimana o Aotearoa) is the national police service and principal law enforcement agency of New Zealand, responsible for preventing crime, enhancing public safety, bringing offenders to justice, and maintai ...

Christchurch Quake Map

Red zone streetcam
from Terralink
Christchurch Quake Live


Scientific and engineering reports





at Geonet ( GNS Science)
Wikieducator learning resource .
An inquiry into the earthquake developed for students aged 13–17. * . (1.04 MB) Retrieved 5 March 2011 *


News


Earthquake news
at ''
The Press ''The Press'' is a daily newspaper published in Christchurch, New Zealand owned by media business Stuff Ltd. First published in 1861, the newspaper is the largest circulating daily in the South Island and publishes Monday to Saturday. One comm ...
'' (Christchurch newspaper)
Earthquake photos
at
Stuff Stuff, stuffed, and stuffing may refer to: *Physical matter *General, unspecific things, or entities Arts, media, and entertainment Books *''Stuff'' (1997), a novel by Joseph Connolly (author), Joseph Connolly *''Stuff'' (2005), a book by Jere ...

Christchurch earthquake page
at
TV3 Channel 3 or TV 3 may refer to: Television *Canal 3 (Burkina Faso), a commercial television channel in Burkina Faso *Canal 3 (Guatemala), a commercial television channel in Guatemala *Channel 3 (Algeria), a public Algerian TV channel owned by EPTV ...

Christchurch earthquake page
at Radio Live
Visual representation of Christchurch earthquakes since 4 September 2010

Earthquake footage

Videos
at Educated Earth


Documentaries


1996 Christchurch documentary
why buildings collapse, predicting many of the 2011 events {{DEFAULTSORT:Christchurch Earthquake, 2011 2011 earthquakes 2011 in New Zealand 2011 earthquake Buried rupture earthquakes Earthquakes in New Zealand February 2011 events in New Zealand History of Canterbury, New Zealand