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Published byThomas Manning Modified over 9 years ago
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Earthquake Commission (EQC) founded 1944 funded by levy on fire insurance covers house damage up to NZ $100,000 (£50,000), plus contents up to NZ $20,000 (£10,000), and land damage under house more than 100,000 Christchurch claims from 4 September event (including more than 2000 uninhabitable houses)
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Aftershocks during September / October www.geonet.org.nz/resources/earthquake/recent-regional-seismicity/shallow-seismicity.html
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Aftershocks during November/December www.geonet.org.nz/resources/earthquake/recent-regional-seismicity/shallow-seismicity.html
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Press, 5 March 2011
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Boxing Day aftershock sequence (24 hrs recorded at McQueen’s Valley, ~ 30 km SE of Christchurch) www.geonet.org.nz/earthquake/drums/mqz-drum.html
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A largely linear pattern to the Boxing Day aftershocks - pointed to a fault running through the City (and in particular under the CBD, represented here by the black square) Press, 27 December 2010
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22 February 2011 12.51am NZT Magnitude 6.3 Depth 5km Epicentre around 5km southeast of Christchurch Human toll: 181 deaths (1 unaccounted for) Estimated financial cost: approx. NZ $15 billion
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The Star, 25 February 2011 Port Hills fault - major aftershocks 22-24 Feb 2011
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USGS map of exposure to shaking, reproduced in New Zealand Historic Places Trust, Kia Kaha Canterbury
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Maximum vertical acceleration recorded at Heathcote (about 1km from epicentre) ~ 2.2g ( a measured world record !) J Berrill, ‘Some Aspects of the M 6.3 February 22nd Earthquake’ (reproduced in the Press, 24 March 2011)
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Reasons for vertical shaking intensity: 1) closeness of fault 3) focusing by Port Hills towards city 2) steep angle (65%) of fault 4) amplification by gravel layers The Star, 25 February 2011
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B A Maritime Museum, Lyttelton - photo V Wood ; Lancaster Park - photo Greg Bowker, APN/The Star, Earthquake 6.3
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http://www.nzherald.co.nz/christchurch-earthquake-photos/ news/image.cfm?c_id=1503036&gallery_id=116929#7381709 Three before & after images of Gothic Christchurch Christchurch Cathedral (accessed 10 June 2011)
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Durham Street Methodist Church
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Canterbury Provincial Chambers Photos / Flickr user Kate's Photo Diary, Simon Baker
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Churches not exposed to 1g+ vertical acceleration (e.g. St Peter’s at Riccarton) suffer much less damage - photo V Wood
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