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Government Geologist reports on ‘extraordinary earthquake phenomena’

Articles, Lost Christchurch

After the September, 1888 earthquake centred in Hanmer caused extensive damage to the Christchurch cathedral, the government geologist, Alexander McKay was sent out to review the land damage. This …

Christchurch, NZ - Damaged Facade

Building pounding damage observed in the 2011 Christchurch earthquake

Research papers, University of Canterbury Library

This paper describes the pounding damage sustained by buildings in the February 2011 Christchurch earthquake. Approximately 6% of buildings in Christchurch CBD were observed to have suffered some form of serious pounding damage. Typical and exceptional examples of building pounding damage are presented and discussed. Almost all building pounding damage occurred in unreinforced masonry buildings, highlighting their vulnerability to this phenomenon. Modern buildings were found to be vulnerable to pounding damage where overly stiff and strong ‘flashing’ components were installed in existing building separations. Soil variability is identified as a key aspect that amplifies the relative movement of buildings, and hence increases the likelihood of pounding damage. Building pounding damage is compared to the predicted critical pounding weaknesses that have been identified in previous analytical research.

Building pounding damage observed in the 2011 Christchurch earthquake

Research papers, University of Canterbury Library

This paper describes the pounding damage sustained by buildings in the February 2011 Christchurch earthquake. Approximately 6% of buildings in Christchurch CBD were observed to have suffered some form of serious pounding damage. Typical and exceptional examples of building pounding damage are presented and discussed. Almost all building pounding damage occurred in unreinforced masonry buildings, highlighting their vulnerability to this phenomenon. Modern buildings were found to be vulnerable to pounding damage where overly stiff and strong ‘flashing’ components were installed in existing building separations. Soil variability is identified as a key aspect that amplifies the relative movement of buildings, and hence increases the likelihood of pounding damage. Building pounding damage is compared to the predicted critical pounding weaknesses that have been identified in previous analytical research.

Winter, Mark 1958- :Q - What's the difference between an insurer delaying …

Images, Alexander Turnbull Library

Shows a fish wondering about the difference between an insurer delaying earthquake-damage settlements and a scavenging groper. Context: refers to the unacceptable and hugely damaging delays in the provision of earthquake damage settlements by insurance companies after the Christchurch earthquakes of 2010 and 2011. Quantity: 1 digital cartoon(s).

Restore Christ Church Cathedral.

Other, National Library of New Zealand

Website dedicated to the reconstruction of the Cathedral damaged in the 2010 and 2011 Christchurch earthquakes.

Performance of earthquake strengthened URM buildings in the 2010/2011 Chri…

Research papers, The University of Auckland Library

Following the 22 February 2011 Christchurch earthquake a comprehensive damage survey of the unreinforced masonry (URM) building stock of Christchurch city, New Zealand was undertaken. Because of the large number of aftershocks associated with both the 2011 Christchurch earthquake and the earlier 4 September 2010 Darfield earthquake, and the close proximity of their epicentres to Christchurch city, this earthquake sequence presented a unique opportunity to assess the performance of URM buildings and the various strengthening methods used in New Zealand to increase the performance of these buildings in earthquakes. Because of the extent of data that was collected, a decision was made to initially focus exclusively on the earthquake performance of URM buildings located in the central business district (CBD) of Christchurch city. The main objectives of the data collection exercise were to document building characteristics and any seismic strengthening methods encountered, and correlate these attributes with observed earthquake damage. In total 370 URM buildings in the CBD were surveyed. Of the surveyed buildings, 62% of all URM buildings had received some form of earthquake strengthening and there was clear evidence that installed earthquake strengthening techniques in general had led to reduced damage levels. The procedure used to collect and process information associated with earthquake damage, general analysis and interpretation of the available survey data for the 370 URM buildings, the performance of earthquake strengthening techniques, and the influence of earthquake strengthening levels on observed damage are reported within. http://15ibmac.com/home/

Dallington 9

Articles, UC QuakeStudies

A photograph showing earthquake damaged homes in Dallington, following the series of earthquakes in Christchurch.

Demolition prompts hope for damaged Christchurch buildings

Audio, Radio New Zealand

The destruction of the Radio Network building in Christchurch has prompted hopes that explosive demolition could be used to bring down other earthquake-damaged buildings.