2010 Canterbury earthquake

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2010 Canterbury earthquake
2010 Canterbury earthquake is located in New Zealand
Christchurch
Christchurch
Wellington
Wellington
2010 Canterbury earthquake
UTC time2010-09-03 16:35:46
ISC event15155483
USGS-ANSSComCat
Local date4 September 2010 (2010-09-04)
Local time04:35 NZST
Magnitude7.1 Mw [1][2]
Depth10 km (6.2 mi) [2]
Epicenter43°33′S 172°11′E / 43.55°S 172.18°E / -43.55; 172.18Coordinates: 43°33′S 172°11′E / 43.55°S 172.18°E / -43.55; 172.18
near Darfield, Canterbury
Areas affectedNew Zealand
Max. intensityX (Extreme) [3]
Peak acceleration1.26 g
Aftershocks~17,600 (as of early August 2016) [4]
Casualties2 seriously injured, approximately 100 total injuries[5]

The 2010 Canterbury earthquake was a powerful 7.1 magnitude earthquake,[1][2] which struck the South Island of New Zealand at 4:35 am September 4, 2010 local time (16:35 3 September UTC).[1] It was centred 40 km west of Christchurch, near the town of Darfield, at a depth of 10 km.[1] Strong aftershocks were reported,[5][6] including ones of magnitude 5.3.[7][8] The main quake was felt widely across the South Island, and in the North Island as far north as New Plymouth.[9]

It caused a lot of damage and cut off power and water supply, mainly in the city of Christchurch.[10][5] Two people were seriously injured.[5] The quake caused damage to historic buildings in Lyttelton, near Christchurch, including a church and parts of a hotel. Businesses in the city centre were closed the day of the quake.[11] The total cost of damages may be as high as NZ$2 billion.[5]

A state of emergency was declared by Civil Defence for Christchurch and the Selwyn District.[12]

Geological background[change | change source]

New Zealand sits on the boundary between the Australian and Pacific plates. In the South Island, these plates mainly slide past each other horizontally, producing earthquakes along fault lines such as the Alpine fault. The 2010 earthquake was centred about 80–90 km to the southeast of the plate boundary through the island, probably on one of a network of smaller faults linked to the main faults that mark the plate boundary itself.[13]

References[change | change source]

  1. 1.0 1.1 1.2 1.3 "New Zealand earthquake report - Sep 4, 2010 at 4:35 am (NZST)". GeoNet. Earthquake Commission and GNS Science. September 4, 2010. Retrieved September 4, 2010.
  2. 2.0 2.1 2.2 "Magnitude 7.0 - South Island of New Zealand: Details". United States Geological Survey. September 3, 2010. Retrieved September 3, 2010.
  3. "Canterbury Quake Live". Archived from the original on 25 August 2011. Retrieved 15 June 2011. Cite uses deprecated parameter |dead-url= (help)
  4. "Canterbury Quake live".
  5. 5.0 5.1 5.2 5.3 5.4 "Massive 7.4 quake hits South Island". Stuff.co.nz. September 3, 2010. Retrieved September 3, 2010.
  6. "New Zealand Earthquake 2010: Strong Quake Shakes Christchurch". The Huffington Post. September 3, 2010. Retrieved September 3, 2010.
  7. "New Zealand Earthquake Report - Sep 4 2010 at 4:56 am (NZST)". GeoNet. 4 September 2010. Retrieved 4 September 2010.
  8. "New Zealand Earthquake Report - Sep 4 2010 at 11:12 am (NZST)". GeoNet. 4 September 2010. Retrieved 4 September 2010.
  9. Van Der Heide, Maike (4 September 2010). "Marlborough, Kaikoura escape worst of quake". The Marlborough Express. Retrieved 4 September 2010.
  10. "Strong earthquake rocks New Zealand's South Island". BBC News. September 3, 2010. Retrieved September 3, 2010.
  11. "Quake timeline". Stuff.co.nz. 4 September 2010. Retrieved 4 September 2010.
  12. "State of emergency declared in Canterbury". Radio New Zealand. September 4, 2010. Retrieved September 4, 2010.948
  13. "Magnitude 7.0 - South Island of New Zealand: Summary". United States Geological Survey. 3 September 2010. Retrieved 3 September 2010.