New zealand earthquake christchurch

The cause, effects and responses to the Christchurch Earthquake. A case study of an earthquake in a HIC.

Measuring 6. The earthquake occurred along a conservative margin between the Pacific Plate and the Australasian Plate. Take a look at the Christchurch earthquake animated map to see the swarm of foreshocks and aftershocks.

The video below shows the effects of the earthquake one minute after it struck. If you've found the resources on this page useful please consider making a secure donation via PayPal to support the development of the site.

The site is self-funded and your support is really appreciated. If you've found the resources on this site useful please consider making a secure donation via PayPal to support the development of the site. What caused the Christchurch earthquake?

What were the effects of the Christchurch earthquake? They were sworn in with New Zealand policing powers and worked alongside New Zealand officers enforcing law and order and reassuring the people of Christchurch 30, residents were provided with chemical toilets What were the long-term responses to the Christchurch earthquake?

The long-term responses included: the construction of around 10, affordable homes water and sewage were restored by August temporary housing was provided by the New Zealand governement Many NGOs provided support including Save the Children Canterbury Earthquake Recovery Authority was created to organise rebuilding the region.

It had special powers to change planning laws and regulations. Related Topics Use the images below to explore related GeoTopics.

new zealand earthquake christchurch

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Top Posts and Pages What factors affect population density and distribution?An earthquake rocked New Zealand's second-largest city this afternoon Feb. The magnitude 6. The U. Though smaller in magnitude, this temblor proved much deadlier than the original earthquake. The quake struck in the worst possible place and time, near the middle of the city during business hours — p.

EST Feb. The previous quake struck in the wee hours of the morning, when most people were still asleep, and the epicenter was about 25 miles 40 kilometers west of the city, which is second to Auckland in population. Today's quakebadly damaged Christchurch's historic cathedral and was strong enough to break about 30 million tons of ice off the nearby Tasman Glacier, the New Zealand Herald reported.

The calving created waves higher than 11 feet 3. New Zealand is a nation of islands along the volatile Pacific Ring of Fire — a narrow zone around the Pacific Ocean where a large chunk of Earth's earthquakes and volcanic eruptions occur. Roughly 90 percent of all the world's earthquakesand 80 percent of the largest ones, strike along the Ring of Fire.

new zealand earthquake christchurch

Today's aftershock struck along the boundary of the Indo-Australian and Pacific plates. These tectonic plates — huge, moving slabs of the Earth's crust — meet at the center of South Island, one of New Zealand's two main land masses. The aftershock, just like the September quake, was an oblique thrust fault, a break in the Earth's crust where a lower section is pushed over a higher one. Since records began being kept in the s, New Zealand has averaged several magnitude 6 earthquakes every year, one magnitude 7 every 10 years, and a magnitude 8 every century, GNS said.

New Zealand's largest known earthquake was a magnitude 8. New Zealand's deadliest quake was a magnitude 7. Big aftershocks are not unusual. Just last week, a 6.

Several other aftershocks, magnitudes 4 to 5, have occurred in the Christchurch region, and there have been approximately six aftershocks greater than magnitude 5.The shipping containers that were still placed along Peacock's Gallop on Main Road stopped falling rocks from hitting passing cyclists.

Westfield RiccartonEastgate MallThe Palmsand Ballantynes were evacuated and closed for engineering inspection. Some shop keepers were told by mall management staff that there would be financial penalties if they did not keep their shop open.

Nearly 50 shops in the mall closed, partially due to the fact that stock had fallen out of shelves and into the aisles. The buildings were cordoned off, and that stopped the heritage tram from running, which had a major impact on those businesses that remained open. The tram started operating again in May Liquefaction occurred in BexleyParklandsand New Brighton.

Little structural damage has been reported in the Christchurch Central City. John Ambulance deactivated its emergency operations centre later in the day. Psychologists argued that survivors of the Christchurch earthquakeespecially those who lost their homes or friends, experience painful memories during aftershocks. Despite the proven need of the area, the Ministry of Health proposed to further cut the mental health budget of the CDHB while on average, other district health boards were to receive increased funding; this information was revealed two days after the Valentine's Day earthquake.

Coleman cited the February as the reason for the additional funding: [17]. As soon as the Valentine's Day quake hit I was sitting up in Auckland and thought, this is going to be big in terms of the health sector. Christchurch mayor Lianne Dalziel talked about her reaction to the Valentine's Day earthquake: [18]. You know, it was a shock. I haven't been proud to admit to everyone that I did scream. I didn't expect to be shocked by an earthquake.

I actually got so used to them that I don't mind them From Wikipedia, the free encyclopedia. For the November earthquake that affected Christchurch, see Kaikoura earthquake. GNS Science. Archived from the original on 29 August A recent international visitor to New Zealand's second largest city asked Coralie Winn why there were so many diggers in its centre tearing down buildings. It seemed they had little notion that less than three years earlier, Christchurch had endured a series of earthquakes that destroyed the city's infrastructure, homes and communities.

The most violent quake, on 22 Februarykilled people. Thousands more were made homeless, and an area more than four times the size of London's Hyde Park was deemed uninhabitable.

Less than three years on, the diggers that rattle about Christchurch's gridded streets are a constant reminder of how far there is to go to recreate what was once there. In the wake of the earthquake, Winn helped found an organisation devoted to creatively inhabiting the vacant gaps where those buildings once stood.

Many locals cannot remember what the central city used to look like. Gravel quadrants have replaced multi-storey buildings, creating lines of sight through the city that never existed before.

Many of the buildings that still stand are boarded up, with steel fencing around them as they wait to be sold or demolished. The main strip of bars and restaurants that lined the river, and was the site of the city's main entertainment hub, is now an empty lot. Until recently, you could look through the dusty windows of a closed down cafe and still see an untouched 22 February edition of the local newspaper. And while creative novelties such as a retail mall made entirely out of steel shipping containers draw increasing numbers of visitors, the city's other main attraction is the battered and broken cathedral in the middle of the main square — a monument to what was endured.

In the immediate aftermath of the earthquake, central government moved to triage the most important parts of a functioning city. Infrastructure like roads and bridges had been shattered. Silt that had bubbled up from the earth clogged sewerage systems. Powerlines were down. Homes were without working toilets for weeks, sometimes months.

The government's response was to establish a single body, the Canterbury Earthquake Recovery Authority Cera. This one was tasked with managing the complete project — from the demolition of commercial buildings and residential homes to planning the next phase of rebuilding. In the early period, almost 8, of the area'shomes were "red zoned", meaning land was so badly damaged that it was unlikely it could ever be rebuilt on. A further 9, properties were reckoned to be uninhabitable because they required such major repairs.Photo: Duncan Shaw-Brown.

The hall was badly damaged in the earthquakes. Councillor James Gough didn't support the move and said they were 'throwing bad money after good'. We need to be more disciplined and find more operational savings. Dalziel pointed out the hall was used for The Press Leaders' Debate yesterday and was a great facility. The council has acknowledged the repair project suffered from inadequate project governance and management. Last year Audit New Zealand reviewed the project and found changes to the scope of the project may have contributed to the increase in cost and the delay in completion.

It also recommended the council should conduct an external independent review to help identify lessons learned. Eager fans of the New Zealand Army Band queued for 90 minutes before the Christchurch Town Hall doors swung open yesterday, for the first show at the venue since lockdown. A Christchurch ratepayer-owned events company is proposing to cut 60 percent of its permanent staff.

Its budget may have blown out by almost a third more than the original figure, but this weekend the doors to the Christchurch Town Hall will re-open for the first time since the earthquakes.

Christchurch City Council events company, Vbase, is set to get a multi-million dollar funding injecting so it can finish repairing the Town Hall. New Zealand RSS. Follow RNZ News. Tags: Canterbury Canterbury earthquakes. Events company proposes to cut 60 percent of staff 13 May Christchurch Town Hall restoration gets boost 29 Jul Chch Town Hall: 'It's going to be better than it ever was' 7 Oct New Zealand Covid rules for ship crew: 'It's worse than being in prison' Queenstown hosts latest event to match job seekers and employers Builder's apprentice observed heart surgery at Wellington hospital Podcasts of the week: Murder, politics and giving kids independence Covid update: Four new imported cases reported in New Zealand today Auckland beachgoers urged to keep safe after tragic week.

Get the RNZ app for ad-free news and current affairs. Top News stories Jacinda Ardern swamped by supporters in traditional Labour stronghold of South Auckland How Australia is coping with Covid Death and dialysis: South Auckland's battle with diabetes Covid rules for ship crew: 'It's worse than being in prison' Roland's TR the drum machine that revolutionised music.March 4, JPEG. March 4, TIFF. Such was the case with the earthquake in Christchurch, New Zealand, on February 22, A September earthquake centered 40 kilometers 25 miles west of Christchurch, in the plains near Darfield, struck at a.

The earthquake in February occurred at p. It had a magnitude of 6. At least people died, and the city of Christchurch was devastated structurally and emotionally. Many people are still missing. Overlain on the map are seismological measurements of the ground shaking in the Christchurch area on February 22, as noted by the U. Geological Survey's Earthquake Hazard Program. Note how intensity is highest right around the most densely developed areas of Christchurch.

City officials and news accounts also described liquefaction—the softening and loosening of the soil due to shaking and groundwater penetration—that was to percent worse than during the September earthquake. There are two forms of energy that cause the shaking in an earthquake. Most structures collapse during the longer-duration S waves because buildings are not designed to handle this side-to-side motion.

In Christchurch, the quake occurred so close by that the lag between P and S waves was a mere second. Caption by Mike Carlowicz. This natural color image of Christchurch, New Zealand, is overlain with a measure of the ground shaking in the area during the February earthquake. Image of the Day Land Earthquakes.

Image of the Day Land. This topographic map of the South Island, New Zealand, illustrates the location of a large earthquake on September 4,how geologic activity shaped the region in the past, and why the current geology makes Christchurch vulnerable to earthquake damage.The earthquake caused widespread damage across Christchurch, killing people [6] [7] in the nation'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.

Significant liquefaction affected the eastern suburbs, producing aroundtonnes of silt. The earthquake was felt across the South Island and parts of the lower and central North Island.

Christchurch Quake Map

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 equivalent to decrease from second to third most populous area in New Zealand. The 6. New Zealand's GNS Science has stated that the earthquake was part of the aftershock sequence that has been occurring since the September magnitude Although smaller in magnitude than the earthquake, the February earthquake was more damaging and deadly for a number of reasons.

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 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".

While both the and earthquakes occurred on "blind" or unknown faults, New Zealand's Earthquake Commission had, in a report, predicted moderate earthquakes in Canterbury with the likelihood of associated liquefaction. The peak ground acceleration PGA in central Christchurch exceeded 1.

Christchurch Earthquake Case Study

The upwards positive acceleration was greater than the downwards, which had a maximum recording of 0. The earthquake was a " strike-slip event with oblique motion" which caused mostly horizontal movement with some vertical movement, [16] with reverse thrust causing upwards vertical movement.

The current New Zealand building code requires a building with a year design life to withstand predicted loads of a year event. Initial reports by GNS Science suggested that ground motion "considerably exceeded even year design motions", [32] beyond maximum considered events MCE. The earthquake generated a significant series of its own aftershocks. More than aftershocks occurred in the first week following the 6.

Below is a list of all aftershocks of Richter, moment, and body-wave magnitudes 5. Road and bridge damage occurred and hampered rescue efforts. Damage occurred to many older buildings, particularly those with unreinforced masonry and those built before stringent earthquakes codes were introduced.

new zealand earthquake christchurch

Many heritage buildings were given red stickers after inspections. The six-storey Canterbury Television CTV building collapsed in the earthquake, leaving only its lift shaft standing, which caught fire. On Wednesday morning, 22 hours after the quake, a survivor was pulled from the rubble.

The Forsyth Barr Building survived the earthquake but many occupants were trapped after the collapse of the stairwells, forcing some to abseil out after the quake. The earthquake destroyed the ChristChurch Cathedral '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 The west wall suffered collapses in the June earthquake and the December quake [66] due to a steel structure — intended to stabilise the rose window — 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.

While the judgements were mostly in favour of the church, no further demolition occurred after the removal of the tower in early Government expressed its concern over the stalemate and appointed an independent negotiator and in Septemberthe Christchurch Diocesan Synod announced that ChristChurch Cathedral will be reinstated [67] after promises of extra grants and loans from local and central government.

Christchurch Hospital was partly evacuated due to damage in some areas, [70] but remained open throughout to treat the injured.


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