Many parts of Christchurch were left in ruins after the quake
Rescuers are toiling overnight in New Zealand to reach scores of trapped people after a 6.3-magnitude earthquake which has claimed at least 65 lives.
Christchurch Mayor Bob Parker says more than 100 people are feared buried in collapsed buildings in the city.
The disaster struck at a shallow depth of 5km (3.1 miles) on Tuesday lunchtime when Christchurch was at its busiest.
It is the South Island city’s second tremor in six months, and the country’s worst natural disaster in 80 years.
The mayor has declared a state of emergency and ordered the city centre’s evacuation.
“We paid a very heavy price here”
John Key Prime Minister
On a cold and wet night, emergency teams have been toiling under floodlights to reach survivors, as relatives keep vigil outside.
Rescue teams with sniffer dogs have been fanning out across Christchurch.
A series of aftershocks, some as big as magnitude 5, have rattled the stricken city of nearly 400,000 people.
Many power and telephone lines are knocked out, while burst water mains have deluged whole districts.
Up to 30 people were feared trapped inside the flattened Pyne Gould Guinness building, where screams have been heard from the ruins.
Trapped under her office desk, Anne Voss told a New Zealand TV station: “I rang my kids to say goodbye. It was absolutely horrible.
“My daughter was crying and I was crying because I honestly thought that was it. You know, you want to tell them you love them, don’t you?”
She said she could hear other people alive in the building, and had called out to them.
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Streets in the north-eastern suburb of Bexley were flooded as the quake caused water mains to burst, which coincided with heavy rain.
The multi-storey Pyne Gould Guinness Building, which normally houses around 200 workers, collapsed. A number of people were thought to be trapped inside.
The 63m spire of the city’s Anglican cathedral was toppled by the earthquake. Built in the second half of the nineteenth century, the spire has been damaged before and the stone construction replaced with copper sheeting.
Much of the city centre was badly damaged, including these buildings on Manchester Street. The quake struck in the middle of the day when many people were out and about.
The city’s cathedral lost its spire, while a six-storey TV building housing an English-language school was reduced to a smoking ruin.
A dozen Japanese students at the school have been reported missing.
Emergency shelters have been set up at the city’s Hagley Park, a race course, schools and community halls.
The Red Cross has been trying to find accommodation for people sheltering outside in tents or under plastic sheeting.
New Zealand Prime Minister John Key, who held an emergency cabinet meeting before heading to the disaster zone, said: “We paid a very heavy price here.
“We could be looking down the barrel at New Zealand’s darkest day.”
Eyewitness Tania Galbraith: “The whole building began to shake and it just wouldn’t stop”
The military has been deployed to help the rescue effort, and the government has accepted an offer of specialist help from Australia.
In the aftermath of the disaster, shocked survivors wandered streets strewn with debris, including shattered glass, broken computers and desks.
Roads split and cracked open as the ground beneath was liquefied by the quake.
Helicopters plucked survivors to safety from rooftops, and dumped water on fires.
Bystanders used bare hands to try to free survivors trapped under debris.
By nature, earthquakes tend to cluster in space and time.
And Tuesday’s tremor in Christchurch is almost certainly related to the much more energetic event that hit the region last September.
The critical difference on this occasion is the ground broke almost directly under the country’s second city, and at shallow depth, 5km (3 miles) below the surface.
Contrast this with September’s magnitude 7 quake: its epicentre occurred some 40km west of the city and at a depth of 10km, and it continued to rupture mainly away from the major built-up areas.
New Zealand lies on the notorious Ring of Fire, the line of frequent quakes and volcanic eruptions that circles virtually the entire Pacific rim.
The country straddles the boundary between two tectonic plates: the Pacific and Indo-Australian plates.
On South Island, the location of the latest quake, the plates rub past each other horizontally.
Many injured people were carried out on blood-soaked stretchers or in the arms of shocked workmates and strangers.
Some escaped on ropes lowered from office towers. Others managed to crawl out of the rubble.
One Christchurch resident, Jaydn Katene, told the New Zealand Herald: “We’ve had friends in town call us and say there are lots of dead bodies outside shops just lying there just covered in bricks.”
Police said that the dead included people on two buses which were crushed by falling buildings.
John Gurr, a camera technician, told Reuters news agency the area was “like a war zone”.
The quake caused some 30m tons of ice to shear away from New Zealand’s biggest glacier.
Witnesses say massive icebergs formed when the Tasman Glacier in Aoraki/Mount Cook National Park broke, creating huge waves.
Britain’s Queen Elizabeth II, who is also New Zealand’s head of state, said in a statement she had been “utterly shocked” by the news.
“My thoughts are with all those who have been affected by this dreadful event,” the statement said.
The damage is thought to be far worse than after the 7.1-magnitude quake on 4 September, which left two people seriously injured but no fatalities.
The epicentre of that quake, which occurred in the middle of the night, was further away from the city and deeper underground.
New Zealand experiences more than 14,000 earthquakes a year, of which only around 20 have a magnitude in excess of 5.0.
The last fatal earthquake was in 1968, when a 7.1-magnitude tremor killed three people on the South Island’s western coast.
Tuesday’s was the country’s worst natural disaster since a 1931 quake in the Hawke’s Bay on the North Island which killed 256 people.
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