The Christchurch 7.1 magnitude earthquake
Early this morning at 4.35am there was a magnitude 7.1 earthquake 30 kilometres west of Christchurch. Pictures show scenes of serious damage to buildings and cars, but amazingly only two cases of serious injuries have been reported so far.
The central city has been closed due to rubble – about 5% of buildings there have been damaged. Power is out to most of the city.
There’s lots of discussion and information on the internet, including on social media sites such as Twitter (http://twitter.com/#search?q=%23christchurch). Some other useful links are:
- Geonet’s earthquake location map: http://www.geonet.org.nz/earthquake/quakes/3366146g-maps.html
- Civil Defence: http://www.civildefence.govt.nz/memwebsite.nsf
- A short video on YouTube showing the earthquake in action: http://www.youtube.com/watch?v=TpjAFSdD5zM
- The Herald’s timeline of events: http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10671050
- Stuff’s coverage: http://www.stuff.co.nz/national/4094986/State-of-emergency-after-7-1-quake-hits-Christchurch
Christchurch is not known for earthquakes - when people think of earthquake-prone cities in New Zealand they tend to think of Wellington. But earthquakes have affected Christchurch before, including the magnitude 7.0–7.3 quake in North Canterbury, on 1 September 1888.
For a bit of history, you can find out about the most damaging New Zealand earthquakes from our Historic earthquakes entry:
Wairarapa – 23 January 1855 – magnitude 8.2
The most powerful ever recorded in New Zealand – rocked the southern part of the North Island and altered the landscape of the Wellington region. Fatality estimates ranged from 5 to 9.
Marlborough – 16 October 1848 – magnitude 7.5
Although centred in the Awatere valley in the Marlborough the quake caused substantial damage in the Wellington area, and was felt from Hawke’s Bay to Canterbury.
North Canterbury – 1 September 1888 – magnitude 7.0–7.3
Struck North Canterbury, about 100 kilometres north-west of Christchurch. Felt from New Plymouth to Invercargill, the quake caused damage to buildings over a wide area, including Christchurch.
Arthur’s Pass – 9 March 1929 – magnitude 7.1
Shook the mountain region near Arthur’s Pass for four minutes. Railway lines were damaged and slips closed the highway to the West Coast for several months.
Napier – 3 February 1931– magnitude 7.8
New Zealand’s deadliest earthquake devastated Napier and Hastings. At least 256 people died – 161 in Napier, 93 in Hastings, and 2 in Wairoa. Many thousands more required medical treatment.
Wairarapa – 24 June 1942 – magnitude 7.8 and 2 August 1942 – magnitude 6.8
Two powerful earthquakes caused substantial damage to many towns in the Wairarapa, and in Wellington.
Īnangahua Junction – 24 May 1968 – magnitude 7.1
The earthquake centred near Īnangahua Junction, a small community 40 kilometres east of Westport. Six people died.
Edgecumbe – 2 March 1987 – magnitude 5.2
Centred north of Edgecumbe. It caused widespread damage and injured several people.
Fiordland – 15 July 2009 – magnitude 7.8
The largest since 1942 it caused widespread shaking and some damage in Southland. If such a powerful quake occurred near Wellington it is likely that hundreds or thousands of people would die.
Last night’s earthquake was felt across most of the South Island, and as far north as Palmerston North. Did you feel it? Where were you?
Posted 
Posted 
