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Images for Cathedral Square; more images...

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "The intersection of Colombo and Gloucester Streets, looking south down Colombo Street towards Cathedral Square. The soldiers are staffing the cordon as this is the main way through from one half of the central city red zone to the other half, which is now bisected by Gloucester Street".

Images, UC QuakeStudies

A view down Colombo Street. A brick wall has been revealed due to the demolition of the adjoining building. A walkway from Gloucester Street to the Square was opened up for a few days to allow the public a closer look of the cathedral.

Images, UC QuakeStudies

The front of Christ Church Cathedral showing its broken tower. Bracing has been placed on the front wall to limit further damage. A walkway from Gloucester Street to the Square was opened up for a few days to allow the public a closer look.

Images, UC QuakeStudies

A view down High Street from the corner of Colombo and Hereford Streets. In the distance, the Holiday Inn City Centre is being demolished. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

The Wizard of Christchurch talks to people viewing the damaged Christ Church Cathedral. Bracing has been placed against the front wall to limit further damage. A walkway from Gloucester Street to the Square was opened up for a few days to allow the public a closer look.

Images, UC QuakeStudies

Damage to the front of Christ Church Cathedral. The tower has been damaged and bracing has been placed on the front wall (right) to limit further damage. A walkway from Gloucester Street to the Square was opened up for a few days to allow the public a closer look.

Images, UC QuakeStudies

The damaged TimeZone games arcade on Colombo Street. The roof has collapsed, batts from the ceiling are piled in the window, and the door is boarded up. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

The damaged TimeZone games arcade on Colombo Street. The roof has collapsed, batts from the ceiling are piled in the window, and the door is boarded up. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

A montage of photographs of the creation of the installation 'Tonic'. The installation is part of the LUXCITY event. Tutors: Annabel Pretty, Cesar Wagner, Peter McPherson

Images, UC QuakeStudies

Looking across an empty site on the corner of Colombo and Hereford Streets where several buildings have been demolished, the Ibis Hotel and ANZ building are visible in the background. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

Workers eat lunch at an outdoor table next to the Gap Filler Community Chess Set on Colombo Street. The Chess Set was a collaboration between Gap Filler and students at the University of Canterbury. The project aimed to restore the iconic Christchurch Chess Set that used to be played in Cathedral Square.

Images, UC QuakeStudies

People look through the cordon fence at the corner of Colombo and Hereford Streets. On the left is the former site of Camera House, and on the right is the ANZ building, with its ground floor windows boarded up. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Videos, UC QuakeStudies

A video about members of the Irish rugby team touring the Christchurch central city Red Zone. The team is in Christchurch for a test match against the All Blacks at the new Christchurch Stadium. The video includes interviews with scrum coach Greg Feek and coach Declan Kidney. It also includes footage of Irish construction workers meeting the team in Cathedral Square.

Research papers, University of Canterbury Library

In the period between September 2010 and December 2011, Christchurch (New Zealand) and its surroundings were hit by a series of strong earthquakes including six significant events, all generated by local faults in proximity to the city: 4 September 2010 (Mw=7.1), 22 February 2011 (Mw=6.2), 13 June 2011 (Mw=5.3 and Mw=6.0) and 23 December 2011 (M=5.8 and (M=5.9) earthquakes. As shown in Figure 1, the causative faults of the earthquakes were very close to or within the city boundaries thus generating very strong ground motions and causing tremendous damage throughout the city. Christchurch is shown as a lighter colour area, and its Central Business District (CBD) is marked with a white square area in the figure. Note that the sequence of earthquakes started to the west of the city and then propagated to the south, south-east and east of the city through a set of separate but apparently interacting faults. Because of their strength and proximity to the city, the earthquakes caused tremendous physical damage and impacts on the people, natural and built environments of Christchurch. The 22 February 2011 earthquake was particularly devastating. The ground motions generated by this earthquake were intense and in many parts of Christchurch substantially above the ground motions used to design the buildings in Christchurch. The earthquake caused 182 fatalities, collapse of two multi-storey reinforced concrete buildings, collapse or partial collapse of many unreinforced masonry structures including the historic Christchurch Cathedral. The Central Business District (CBD) of Christchurch, which is the central heart of the city just east of Hagley Park, was practically lost with majority of its 3,000 buildings being damaged beyond repair. Widespread liquefaction in the suburbs of Christchurch, as well as rock falls and slope/cliff instabilities in the Port Hills affected tens of thousands of residential buildings and properties, and shattered the lifelines and infrastructure over approximately one third of the city area. The total economic loss caused by the 2010-2011 Christchurch earthquakes is currently estimated to be in the range between 25 and 30 billion NZ dollars (or 15% to 18% of New Zealand’s GDP). After each major earthquake, comprehensive field investigations and inspections were conducted to document the liquefaction-induced land damage, lateral spreading displacements and their impacts on buildings and infrastructure. In addition, the ground motions produced by the earthquakes were recorded by approximately 15 strong motion stations within (close to) the city boundaries providing and impressive wealth of data, records and observations of the performance of ground and various types of structures during this unusual sequence of strong local earthquakes affecting a city. This paper discusses the liquefaction in residential areas and focuses on its impacts on dwellings (residential houses) and potable water system in the Christchurch suburbs. The ground conditions of Christchurch including the depositional history of soils, their composition, age and groundwater regime are first discussed. Detailed liquefaction maps illustrating the extent and severity of liquefaction across Christchurch triggered by the sequence of earthquakes including multiple episodes of severe re-liquefaction are next presented. Characteristic liquefaction-induced damage to residential houses is then described focussing on the performance of typical house foundations in areas affected by liquefaction. Liquefaction impacts on the potable water system of Christchurch is also briefly summarized including correlation between the damage to the system, liquefaction severity, and the performance of different pipe materials. Finally, the characteristics of Christchurch liquefaction and its impacts on built environment are discussed in relation to the liquefaction-induced damage in Japan during the 11 March 2011 Great East Japan Earthquake.