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Images, UC QuakeStudies

A photograph of an exhibition sign next to the Speaker's Chair on display in the Canterbury Quakes exhibition at the Canterbury Museum. The Speaker's Chair stood at the southern end of the Stone Chamber of the Canterbury Provincial Chambers, and survived the 22 February 2011 earthquake despite the damage to the chamber.

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.

Research papers, The University of Auckland Library

As part of the 'Project Masonry' Recovery Project funded by the New Zealand Natural Hazards Research Platform, commencing in March 2011, an international team of researchers was deployed to document and interpret the observed earthquake damage to masonry buildings and to churches as a result of the 22nd February 2011 Christchurch earthquake. The study focused on investigating commonly encountered failure patterns and collapse mechanisms. A brief summary of activities undertaken is presented, detailing the observations that were made on the performance of and the deficiencies that contributed to the damage to approximately 650 inspected unreinforced clay brick masonry (URM) buildings, to 90 unreinforced stone masonry buildings, to 342 reinforced concrete masonry (RCM) buildings, to 112 churches in the Canterbury region, and to just under 1100 residential dwellings having external masonry veneer cladding. In addition, details are provided of retrofit techniques that were implemented within relevant Christchurch URM buildings prior to the 22nd February earthquake and brief suggestions are provided regarding appropriate seismic retrofit and remediation techniques for stone masonry buildings. http://www.nzsee.org.nz/publications/nzsee-quarterly-bulletin/

Images, Alexander Turnbull Library

The cartoon depicts a rose window set in a stone wall. The glass circles each contain a dollar sign. Refers to the future of the Christchurch Cathedral after the Canterbury earthquakes of 2010 and 2011. The Anglican Church seemed to only consider the money in arguing that it would be too expensive to be repaired or rebuilt. Title from file name Quantity: 1 digital cartoon(s).

Videos, UC QuakeStudies

A video of an interview with John Turner, owner of Ambience Tiling, about the restoration of the tiles in New Regent Street. Turner talks about working with SCE Stone & Design, who sent the sample tiles to China where they were machine replicated. The tiles took six to eight weeks to arrive, with about 10,500 new tiles produced. The video also includes an interview with Iain Taylor, a tiler at Ambience Tiling, about the retiling process.

Research papers, University of Canterbury Library

This paper explores the scope of small-scale radio to create an auditory geography of place. It focuses on the short term art radio project The Stadium Broadcast, which was staged in November 2014 in an earthquake-damaged sports stadium in Christchurch, New Zealand. Thousands of buildings and homes in Christchurch have been demolished since the Februrary 22, 2011 earthquake, and while Lancaster Park sports stadium is still standing, it has been unused since that date and its future remains uncertain. The Stadium Broadcast constructed a radio memorial to the Park’s 130 year history through archival recordings, the memories of local people, observation of its current state, and a performed site-specificity. The Stadium Broadcast reflected on the spatiality of radio sounds and transmissions, memory, post-disaster transitionality, and the im-permanence of place.

Research papers, University of Canterbury Library

This article explores the scope of small-scale radio to create an auditory geography of place. It focuses on the short-term art radio project The Stadium Broadcast, which was staged in November 2014 in an earthquake-damaged sports stadium in Christchurch, New Zealand. Thousands of buildings and homes in Christchurch have been demolished since the February 22, 2011, earthquake, and by the time of the broadcast the stadium at Lancaster Park had been unused for three years and nine months, and its future was uncertain. The Stadium Broadcast constructed a radio memorial to the Park’s 130-year history through archival recordings, the memories of local people, observation of its current state, and a performed site-specificity. The Stadium Broadcast reflected on the spatiality of radio sounds and transmissions, memory, postdisaster transitionality, and the impermanence of place.

Images, UC QuakeStudies

The clock tower of the former Railway Station, encased in plywood to prevent further damage. A banner sponsored by The Press hangs below the clock, covered with words which symbolise the September earthquake. The photographer comments, "After the September earthquake the clocked stopped at 04:35 and everyone campaigned to have this clock left as it was. At that time the building was believed to be OK. Two more earthquakes later and the possible memorial will probably end up like a lot of Christchurch's heritage buildings on a huge pile of stone and bricks in Bottle Lake Forest".

Images, Alexander Turnbull Library

A cheerful old woman sits with a cup of tea on her sofa watching television with an enormous boulder beside her. She says 'Big and solid it reminded me of my late husband but then I realized that in two weeks it hasn't once broken wind, belched or called for a beer, or gone and changed the channel and I think I'm in love!' The little Evans man says 'Stone me!' Context - The Christchurch earthquake of 22 February 2011. Some people remain cheerful and optimistic in spite of dreadfully difficult conditions. Colour and black and white versions available Quantity: 2 digital cartoon(s).

Audio, Radio New Zealand

It was so nearly lost. As the Christ Church Anglican Cathedral is being rebuilt, historian Edmund Bohan is releasing a history of the distinctive Gothic building. It shows it was controversial even before work started on designing it, let alone building in. From the laying of the foundations to the official opening, it took 40 years, after squabbles over pretty much every aspect of its construction - not to mention the huge problems raising the money to build it in the City Centre. In Heart of the City: The Story of Christchurch's Controversial Cathedral, Edmund is critical of the former Anglican Bishop Victoria Matthews' determination to demolish the badly-damaged cathedral after the Canterbury earthquakes, to replace it with a modern church. And he tells Lynn Freeman he's very much looking forward to seeing the Cathedral restored to its former glory after a lengthy and pricey rebuild. But first he sets the scene. Back in the 1860s, there was controversy over where the cathedral should go, its design, whether it should be in stone or timber - even if there should be a cathedral built at all! Heart of the City: The Story of Christchurch's Controversial Cathedral, by Edmund Bohan is published by Quentin Wilson Publishing.

Research papers, The University of Auckland Library

Churches are an important part of New Zealand's historical and architectural heritage. Various earthquakes around the world have highlighted the significant seismic vulnerability of religious buildings, with the extensive damage that occurred to stone and clay-brick unreinforced masonry churches after the 2010-2011 Canterbury earthquakes emphasising the necessity to better understand this structural type. Consequently, a country-wide inventory of unreinforced masonry churches is here identified. After a bibliographic and archival investigation, and a 10 000 km field trip, it is estimated that currently 297 unreinforced masonry churches are present throughout New Zealand, excluding 12 churches demolished in Christchurch because of heavy damage sustained during the Canterbury earthquake sequence. The compiled database includes general information about the buildings, their architectural features and structural characteristics, and any architectural and structural transformations that have occurred in the past. Statistics about the occurrence of each feature are provided and preliminary interpretations of their role on seismic vulnerability are discussed. The list of identified churches is reported in annexes, supporting their identification and providing their address.

Research papers, The University of Auckland Library

Following the Christchurch earthquake of 22 February 2011 a number of researchers were sent to Christchurch, New Zealand to document the damage to masonry buildings as part of “Project Masonry”. Coordinated by the Universities of Auckland and Adelaide, researchers came from Australia, New Zealand, Canada, Italy, Portugal and the US. The types of masonry investigated were unreinforced clay brick masonry, unreinforced stone masonry, reinforced concrete masonry, residential masonry veneer and churches; masonry infill was not part of this study. This paper focuses on the progress of the unreinforced masonry (URM) component of Project Masonry. To date the research team has completed raw data collection on over 600 URM buildings in the Christchurch area. The results from this study will be extremely relevant to Australian cities since URM buildings in New Zealand are similar to those in Australia.

Research papers, The University of Auckland Library

The Catholic Cathedral is classified as a category 1 listed heritage building constructed largely of unreinforced stone masonry, and was significantly damaged in the recent Canterbury earthquakes of 2010 and 2011. In the 2010 event the building presented slight to moderta damage, meanwhile in the 2011 one experienced ground shaking in excess of its capacity leading to block failures and partial collapse of parts of the building, which left the building standing but still posing a significant hazard. In this paper we discuss the approach to develop the earthquake analysis of the building by 3D numerical simulations, and the results are compared/calibrated with the observed damage of the 2010 earthquake. Very accurate records were obtained during both earthquakes due to a record station located least than 80 m of distance from the building and used in the simulations. Moreover it is included in the model the soil structure interaction because it was observed that the ground and foundation played an important role on the seismic behavior of the structure. A very good agreement was found between the real observed damage and the nonlinear dynamic simulations described trough inelastic deformation (cracking) and building´s performance.

Research papers, University of Canterbury Library

The Mw 7.8 Kaikōura earthquake ruptured ~200 km at the ground surface across the New Zealand plate boundary zone in the northern South Island. This study was conducted in an area of ~600 km2 in the epicentral region where the faults comprise two main non-coplanar sets that strike E-NE and NNE-NW with mainly steep dips (60о-80°). Analysis of the surface rupture using field and LiDAR data provides new information on the dimensions, geometries and kinematics of these faults which was not previously available from pre-earthquake active faults or bedrock structure. The more northerly striking fault set are sub-parallel to basement bedding and accommodated predominantly left-lateral reverse slip with net slips of ~1 and ~5 m for the Stone Jug and Leader faults, respectively. The E-NE striking Conway-Charwell and The Humps faults accrued right-lateral to oblique reverse with net slips of ~2 and ~3 m, respectively. The faults form a hard-linked system dominated by kinematics consistent with the ~260° trend of the relative plate motion vector and the transpressional structures recorded across the plate boundary in the NE South Island. Interaction and intersection of the main fault sets facilitated propagation of the earthquake and transfer of slip northwards across the plate boundary zone.

Images, Alexander Turnbull Library

Text at the top of the cartoon reads 'News - A "Moon man non-event lunch" will be held above Christchurch to defy quake predictions for that day'. In tea rooms on hills above Christchurch a group of people enjoy lunch as they defy precaution against a predicted earthquake. They order a 'pot o' tea', 'pie & chips', 'sandwich & coke' and a 'shake & roll'; above in a black and thunderous cloud God thinks he heard someone request a shake & a roll'. Context - After the two big earthquakes in Christchurch on 4 September 2010 and 22 February 2011, the so-called Moon Man Ken Ring is backing away from his prediction that Christchurch will be whacked by a huge earthquake today (20 March 2011). His claims have terrified Cantabrians and led to people fleeing Christchurch. M.P. Nick Smith and the Skeptics Society are planning a lunch in one of Christchurch's highest, oldest, stone buildings - on the day that "moon man" Ken Ring says the city will be hit by another devastating earthquake ; the lunch will be held at noon on March 20 at the Sign of the Kiwi, on the top of the Port Hills - which Smith said was the closest building to the epicentre of the February 22 quake. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Prime Minister John Key drives a tractor to which is attached a crane and a huge demolition ball in the shape of MP Gerry Brownlee's head; the ball smashes against a historic building bringing stone pediments down. Context - Gerry Brownlee, who is Earthquake Recovery Minister, has caused a stir by suggesting that if he had his way some of Christchurch's older buildings would be "down tomorrow". He also said the price of saving some historic buildings badly damaged in the February 22 earthquake was too high. People had died in the quake because of attempts to save historic buildings badly damaged in the September 4 quake. Brownlee said he had no regrets despite the stir his comments caused - but he was annoyed by suggestions the Cathedral and Riccarton House were among buildings he thought should be bowled. He believed those buildings should be saved, and they would be. "I'm not a philistine; I was chairman of the trust that actually saved Riccarton House from the bulldozers in 1990. "I understand conservation architecture very well and I do have an appreciation of heritage buildings." Original cartoon held at A-474-048 Quantity: 1 digital cartoon(s).

Research papers, The University of Auckland Library

As part of the ‘Project Masonry’ Recovery Project funded by the New Zealand Natural Hazards Research Platform, commencing in March 2011, an international team of researchers was deployed to document and interpret the observed earthquake damage to masonry buildings and to churches as a result of the 22nd February 2011 Christchurch earthquake. The study focused on investigating commonly encountered failure patterns and collapse mechanisms. A brief summary of activities undertaken is presented, detailing the observations that were made on the performance of and the deficiencies that contributed to the damage to approximately 650 inspected unreinforced clay brick masonry (URM) buildings, to 90 unreinforced stone masonry buildings, to 342 reinforced concrete masonry (RCM) buildings, to 112 churches in the Canterbury region, and to just under 1100 residential dwellings having external masonry veneer cladding. Also, details are provided of retrofit techniques that were implemented within relevant Christchurch URM buildings prior to the 22nd February earthquake. In addition to presenting a summary of Project Masonry, the broader research activity at the University of Auckland pertaining to the seismic assessment and improvement of unreinforced masonry buildings is outlined. The purpose of this outline is to provide an overview and bibliography of published literature and to communicate on-going research activity that has not yet been reported in a complete form. http://sesoc.org.nz/conference/programme.pdf

Research papers, The University of Auckland Library

As part of a seismic retrofit scheme, surface bonded glass fiber-reinforced polymer (GFRP) fabric was applied to two unreinforced masonry (URM) buildings located in Christchurch, New Zealand. The unreinforced stone masonry of Christchurch Girls’ High School (GHS) and the unreinforced clay brick masonry Shirley Community Centre were retrofitted using surface bonded GFRP in 2007 and 2009, respectively. Much of the knowledge on the seismic performance of GFRP retrofitted URM was previously assimilated from laboratory-based experimental studies with controlled environments and loading schemes. The 2010/2011 Canterbury earthquake sequence provided a rare opportunity to evaluate the GFRP retrofit applied to two vintage URM buildings and to document its performance when subjected to actual design-level earthquake-induced shaking. Both GFRP retrofits were found to be successful in preserving architectural features within the buildings as well as maintaining the structural integrity of the URM walls. Successful seismic performance was based on comparisons made between the GFRP retrofitted GHS building and the adjacent nonretrofitted Boys’ High School building, as well as on a comparison between the GFRP retrofitted and nonretrofitted walls of the Shirley Community Centre building. Based on detailed postearthquake observations and investigations, the GFRP retrofitted URM walls in the subject buildings exhibited negligible to minor levels of damage without delamination, whereas significant damage was observed in comparable nonretrofitted URM walls. AM - Accepted Manuscript

Research papers, University of Canterbury Library

The Eastern Humps and Leader faults, situated in the Mount Stewart Range in North Canterbury, are two of the ≥17 faults which ruptured during the 2016 MW7.8 Kaikōura Earthquake. The earthquake produced complex, intersecting ground ruptures of these faults and the co-seismic uplift of the Mount Stewart Range. This thesis aims to determine how these two faults accommodated deformation during the 2016 earthquake and how they interact with each other and with pre-existing geological structures. In addition, it aims to establish the most likely subsurface geometry of the fault complex across the Mount Stewart Range, and to investigate the paleoseismic history of the Leader Fault. The Eastern Humps Fault strikes ~240° and dips 80° to 60° to the northwest and accommodated right- lateral – reverse-slip, with up to 4 m horizontal and 2 m vertical displacement in the 2016 earthquake. The strike of the Leader Fault varies from ~155 to ~300°, and dips ~30 to ~80° to the west/northwest, and mainly accommodated left-lateral – reverse-slip of up to 3.5 m horizontal and 3.5 m vertical slip in the 2016 earthquake. On both the Eastern Humps and Leader faults the slip is variable along strike, with areas of low total displacement and areas where horizontal and vertical displacement are negatively correlated. Fault traces with low total displacement reflect the presence of off-fault (distributed) displacement which is not being captured with field measurements. The negative correlation of horizontal and vertical displacement likely indicates a degree of slip partitioning during the 2016 earthquake on both the Eastern Humps and Leader faults. The Eastern Humps and Leader faults have a complex, interdependent relationship with the local bedrock geology. The Humps Fault appears to be a primary driver of ongoing folding and deformation of the local Mendip Syncline and folding of the Mount Stewart Range, which probably began prior to, or synchronous with, initial rupture of The Humps Fault. The Leader Fault appears to use existing lithological weaknesses in the Cretaceous-Cenozoic bedrock stratigraphy to rupture to the surface. This largely accounts for the strong variability on the strike and dip of the Leader Fault, as the geometry of the surface ruptures tend to reflect the strike and dip of the geological strata which it is rupturing through. The Leader Fault may also accommodate some degree of flexural slip in the Cenozoic cover sequence of the Mendip Syncline, contributing to the ongoing growth of the fold. The similarity between topography and uplift profiles from the 2016 earthquake suggest that growth of the Mount Stewart Range has been primarily driven by multiple (>500) discrete earthquakes that rupture The Humps and Leader faults. The spatial distribution of surface displacements across the Mount Stewart Range is more symmetrical than would be expected if uplift is driven primarily by The Humps and Leader faults alone. Elastic dislocation forward models were used to model potential sub-surface geometries and the resulting patterns of deformation compared to photogrammetry-derived surface displacements. Results show a slight preference for models with a steeply southeast-dipping blind fault, coincident with a zone of seismicity at depth, as a ‘backthrust’ to The Humps and Leader faults. This inferred Mount Stewart Fault accommodated contractional strain during the 2016 earthquake and contributes to the ongoing uplift of the Mount Stewart Range with a component of folding. Right-lateral and reverse shear stress change on the Hope Fault was also modelled using Coulomb 3.3 software to examine whether slip on The Humps and Leader faults could transfer enough stress onto the Hope Fault to trigger through-going rupture. Results indicate that during the 2016 earthquake right-lateral shear and reverse stress only increased on the Hope Fault in small areas to the west of the Leader Fault, and similar ruptures would be unlikely to trigger eastward propagating rupture unless the Hope Fault was close to failure prior to the earthquake. Paleoseismic trenches were excavated on the Leader Fault at four locations from 2018 to 2020, revealing near surface (< 4m depth) contractional deformation of Holocene stratigraphy. Three of the trench locations uncovered clear evidence for rupture of the Leader Fault prior to 2016, with fault displacement of near surface stratigraphy being greater than displacement recorded during the 2016 earthquake. Radiocarbon dating of in-situ organic material from two trenches indicate a date of the penultimate earthquake on the Leader Fault within the past 1000 years. This date is consistent with The Humps and Leader faults having ruptured simultaneously in the past, and with multi-fault ruptures involving The Humps, Leader, Hundalee and Stone Jug faults having occurred prior to the 2016 Kaikōura earthquake. Overall, the results contribute to an improved understanding of the Kaikōura earthquake and highlight the importance of detailed structural and paleoseismic investigations in determining controls on earthquake ‘complexity’.