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Images, UC QuakeStudies

Large cracks run through the brick cladding of this house in Wainoni. The photographer comments, "During the numerous earthquakes in Christchurch the land which ran alongside the Avon river on Avonside Drive slumped towards the waterway. Houses which were wooden framed and had an external brick veneer started to sink into the liquefied soil. This caused the brick walls to crack, but the houses' occupants though shook up were saved by the wooden framework from the houses collapsing on them".

Videos, UC QuakeStudies

A video about people buying marmite from the Fresh Choice supermarket in Merivale. The supermarket has a secret stash of marmite which they have made available to customers in exchange for a bank note. The bank notes will be donated to the Christchurch Women's Refuge. Marmite went missing from supermarket shelves across the country after the 22 February 2011 earthquake damaged the factory in Christchurch.

Images, UC QuakeStudies

In a vacant lot opposite the CTV building where a building has been demolished, is a commemoration to those who died in the earthquake. It includes a pile of demolition rubble and 185 white stones in honour of each person who lost their life on 22nd February 2011. Around it are also item such as a frame photograph and flowers left by the public.

Images, UC QuakeStudies

In a vacant lot opposite the CTV building where a building has been demolished, is a commemoration to those who died in the earthquake. It includes a pile of demolition rubble and 185 white stones in honour of each person who lost their life on 22nd February 2011. Around it are also item such as a frame photograph and flowers left by the public.

Images, UC QuakeStudies

In a vacant lot opposite the CTV building where a building has been demolished, is a commemoration to those who died in the earthquake. It includes a pile of demolition rubble and 185 white stones in honour of each person who lost their life on 22nd February 2011. Around it are item such as a frame photograph and flowers left by the public.

Images, UC QuakeStudies

A piper stands beside the twisted Medway Street Bridge during the River of Flowers memorial event. A concrete barrier blocking off the bridge is adorned with flowers. The photographer comments, "One year on, Riverside residents gather for a 2 minute silence and to cast flowers in the river. Riverside residents met at the Medway St bridge to commemorate the anniversary of the 22/2/11 quake".

Images, UC QuakeStudies

Flowers float under the twisted Medway Street Bridge during the River of Flowers memorial event. A colourful cross has been attached to the centre of the bridge. The photographer comments, "One year on, Riverside residents gather for a 2 minute silence and to cast flowers in the river. Riverside residents met at the Medway St bridge to commemorate the anniversary of the 22/2/11 quake".

Images, eqnz.chch.2010

8 Velsheda Street, Bexley, Christchurch, across the road from my house was demolished a week or so ago, just one of many demolitions of Red Zone properties at the moment. This house was about ten years old and suffered land damage during the 4th September 2010 and 22nd February 2011 earthquakes. The same fate awaits my house later in the year o...

Research papers, The University of Auckland Library

Two days after the 22 February 2011 M6.3 earthquake in Christchurch, New Zealand, three of the authors conducted a transect of the central city, with the goal of deriving an estimate of building damage levels. Although smaller in magnitude than the M7.1 4 September 2010 Darfield earthquake, the ground accelerations, ground deformation and damage levels in Christchurch central city were more severe in February 2011, and the central city was closed down to the general public. Written and photographic notes of 295 buildings were taken, including construction type, damage level, and whether the building would likely need to be demolished. The results of the transect compared favourably to Civil Defence rapid assessments made over the following month. Now, more than one year and two major aftershocks after the February 2011 earthquake these initial estimates are compared to the current demolition status to provide an updated understanding of the state of central Christchurch.

Images, UC QuakeStudies

The northern side of the Christ Church Cathedral with the cafe and store in the foreground. Shipping containers have been placed around the eastern side of the Cathedral to protect the road from falling debris. Wire fencing has also been placed around the building as a cordon. To the right, the damaged and party deconstructed tower can be seen with the missing spire which fell during the 22 February 2011 earthquake.

Videos, UC QuakeStudies

A video of Press journalist Martin Van Beynen talking about the Canterbury Television Building which collapsed during the 22 February 2011 earthquake. Beynen investigates the construction manager of the building, Gerald Shirtcliff, who allegedly faked an engineering degree and stole the identity of an engineer he knew in South Africa. The video also includes footage of Shirtcliff giving evidence about the CTV Building at the Canterbury Earthquake Royal Commission.

Research papers, University of Canterbury Library

Following the 22 February 2011, MW 6.2 earthquake located on a fault beneath the Port Hills of Christchurch, fissuring of up to several hundred metres in length was observed in the loess and loess-colluvium of foot-slope positions in north-facing valleys of the Port Hills. The fissuring was observed in all major valleys, occurred at similar low altitudes, showing a contour-parallel orientation and often accompanied by both lateral compression/extension features and spring formation in the valley floor below. Fissuring locations studied in depth included Bowenvale Valley, Hillsborough Valley, Huntlywood Terrace–Lucas Lane, Bridle Path Road, and Maffeys Road–La Costa Lane. Investigations into loess soil, its properties and mannerisms, as well as international examples of its failure were undertaken, including study of the Loess Plateau of China, the Teton Dam, and palaeo-fissuring on Banks Peninsula. These investigations lead to the conclusion that loess has the propensity to fail, often due to the infiltration of water, the presence of which can lead to its instantaneous disaggregation. Literature study and laboratory analysis of Port Hills loess concluded that is has the ability to be stable in steep, sub-vertical escarpments, and often has a sub-vertically jointed internal structure and has a peak shear strength when dry. Values for cohesion, c (kPa) and the internal friction angle, ϕ (degrees) of Port Hills loess were established. The c values for the 40 Rapaki Road, 3 Glenview Terrace loess samples were 13.4 kPa and 19.7 kPa, respectively. The corresponding ϕ values were thought unusually high, at 42.0° and 43.4°.The analysed loess behaved very plastically, with little or no peak strength visible in the plots as the test went almost directly to residual strength. A geophysics resistivity survey showed an area of low resistivity which likely corresponds to a zone of saturated clayey loess/loess colluvium, indicating a high water table in the area. This is consistent with the appearances of local springs which are located towards the northern end of each distinct section of fissure trace and chemical analysis shows that they are sourced from the Port Hills volcanics. Port Hills fissuring may be sub-divided into three categories, Category A, Category B, and Category C, each characterised by distinctive features of the fissures. Category A includes fissures which display evidence of, spring formation, tunnel-gullying, and lateral spreading-like behaviour or quasi-toppling. These fissures are several metres down-slope of the loess-bedrock interface, and are in valleys containing a loess-colluvium fill. Category B fissures are in wider valleys than those in Category A, and the valleys contain estuarine silty sediments which liquefied during the earthquake. Category C fissures occurred at higher elevations than the fissures in the preceding categories, being almost coincident with bedrock outcropping. It is believed that the mechanism responsible for causing the fissuring is a complex combination of three mechanisms: the trampoline effect, bedrock fracturing, and lateral spreading. These three mechanisms can be applied in varying degrees to each of the fissuring sites in categories A, B, and C, in order to provide explanation for the observations made at each. Toppling failure can describe the soil movement as a consequence of the a three causative mechanisms, and provides insight into the movement of the loess. Intra-loess water coursing and tunnel gullying is thought to have encouraged and exacerbated the fissuring, while not being the driving force per se. Incipient landsliding is considered to be the least likely of the possible fissuring interpretations.

Videos, UC QuakeStudies

A video about the Christchurch City Council housing complex on Conference Street in the Christchurch central city. The housing complex was unoccupied after the 22 February 2011 earthquake despite the housing shortage. Christchurch City Council said that the vacant units could not be lived in because of structural damage or damage to services. However, the building has been checked by structural engineers and many of the rooms have been deemed safe to occupy.

Videos, UC QuakeStudies

A video about the reopening of the city branch of the Punting on the Avon route, which has been closed since the 22 February 2011 earthquake. The video includes an interview with Mayor Bob Parker about tourism in Christchurch. He mentions that Australia has updated its travel advisory on Christchurch to say that it is as safe as the other cities in New Zealand. The video also includes footage of Parker poling a punt.

Videos, UC QuakeStudies

A video of a tour of the historic Canterbury Club building on Cambridge Terrace. The club will reopen on 9 June 2012, after an intensive rebuild and restoration process which has fixed the damage from the 22 February 2011 earthquake. The video also includes an interview with Dr Brent Stanley, the Canterbury Club President. Stanley talks about the strengthening work that was done in 2009, as well as the history of the club.