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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’.

Research papers, University of Canterbury Library

This study analyses the success and limitations of the recovery process following the 2010–11 earthquake sequence in Christchurch, New Zealand. Data were obtained from in-depth interviews with 32 relocated households in Christchurch, and from a review of recovery policies implemented by the government. A top-down approach to disaster recovery was evident, with the creation of multiple government agencies and processes that made grassroots input into decision-making difficult. Although insurance proceeds enabled the repair and rebuilding of many dwellings, the complexity and adversarial nature of the claim procedures also impaired recovery. Householders’ perceptions of recovery reflected key aspects of their post-earthquake experiences (e.g. the housing offer they received, and the negotiations involved), and the outcomes of their relocation (including the value of the new home, their subjective well-being, and lifestyle after relocation). Protracted insurance negotiations, unfair offers and hardships in post-earthquake life were major challenges to recovery. Less-thanfavourable recovery experiences also transformed patterns of trust in local communities, as relocated householders came to doubt both the government and private insurance companies’ ability to successfully manage a disaster. At the same time, many relocated households expressed trust in their neighbours and communities. This study illuminates how government policies influence disaster recovery while also suggesting a need to reconsider centralised, top-down approaches to managing recovery.

Research papers, University of Canterbury Library

The last few years have seen the emergence of a range of Digital Humanities projects concerned with archiving material related to traumatic events and disasters. The 9/11 Digital Archive, The Hurricane Memory Bank and the CEISMIC Canterbury Earthquakes Digital Archive are a few such projects committed to collecting, curating and making available disaster-related images, stories and media for the purposes of commemoration, teaching and research. In this paper Paul Millar 1. examines the value of such projects in preserving post-disaster memories, 2. explores some differences between passive and active digital memory projects, and 3. asks whether even the most determinedly open and inclusive digital memory project can preserve its values when issues of race, class, gender, politics and economics impact upon its activities.

Research papers, University of Canterbury Library

SeisFinder is an open-source web service developed by QuakeCoRE and the University of Canterbury, focused on enabling the extraction of output data from computationally intensive earthquake resilience calculations. Currently, SeisFinder allows users to select historical or future events and retrieve ground motion simulation outputs for requested geographical locations. This data can be used as input for other resilience calculations, such as dynamic response history analysis. SeisFinder was developed using Django, a high-level python web framework, and uses a postgreSQL database. Because our large-scale computationally-intensive numerical ground motion simulations produce big data, the actual data is stored in file systems, while the metadata is stored in the database.

Research papers, University of Canterbury Library

There has been little discussion of what archival accounting evidence can contribute to an understanding of a society’s response to a natural disaster. This article focuses on two severe earthquakes which struck New Zealand in 1929 and 1931 and makes two main contributions to accounting history. First, by discussing evidence from archival sources, it contributes to the literature on accounting in a disaster. This provides a basis for future theory building and for future comparative research related to the response to more recent natural disasters such as the 2010–11 Canterbury earthquakes. Secondly, it questions the conclusions of recently published research concerning the role of central and local government in this and recent earthquakes.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Nelson College for Girls year 12 leaders (from left) Sophie Day, Petra Matz, Sascha Miller, Jessica Rose, Kate Mickleson, Ming Pons, Emma Dallison, Yvette Jones-White, Nicola Britten, Eilish Wilson, Zoey Coombs-King, Abigail Goodison and Mackenzie Orange have started a collection at the college of cans and cash to aid people of Canterbury affected by the recent earthquake".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Members of the Red Cross civil defence response team and South Canterbury Police have been in Christchurch helping with the earthquake clean up. Welfare checks required the team to walk along River Road checking on householders. Pictured looking at a damaged bridge on River Road near Tai Tapu are (from left) Andy Todd, Anna Munro and Ken Weavers".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Gorge Road School held a 'Red & Black' themed dress day and a gold coin donation (which they made into a coin trail) to raise funds for earthquake-stricken Canterbury. Pictured with their coins are Logan Marshall (5) on the left and Aaron Hart (6), with school pupils in behind. The fifty-pupil school managed to raise $136.00".

Audio, Radio New Zealand

The Earthquake Commission (EQC) criticised for misleading and inadequate measurements on housing foundations when assessing damage to Canterbury homes; Wellington historic building champions vow to save heritage structure in the capital; the spread of didymo in Fiordland; Defence Force sentencing today after drowning last year; the censorship of Maniac, arty audiences only please, and; the PM changes tack on working with NZ First.

Audio, Radio New Zealand

Admiral Thad Allen was the principal federal official in charge after Hurricane Katrina battered the US Gulf Coast in 2005, killing more than 1,700 people and displacing many more. Prime Minister John Key says the structure of the Canterbury Earthquake Recovery Authority was decided upon after an examination of the way other governments responded to disasters like Hurricane Katrina.

Audio, Radio New Zealand

Admiral Thad Allen was the principal federal official in charge after Hurricane Katrina battered the US Gulf Coast in 2005, killing more than 1,700 people and displacing many more. Prime Minister John Key says the structure of the Canterbury Earthquake Recovery Authority was decided upon after an examination of the way other governments responded to disasters like Hurricane Katrina.

Audio, Radio New Zealand

Christchurch MPs - Labour's Lianne Dalziel and National's Amy Adams - say it's not fair for seat-of-the-pants post-quake red/yellow and green sticker assessments to be formally recorded forever. They say the assessments were hastily done and inconsistent. But the Christchurch City Council says its required to do so under the provisions of the Canterbury Earthquake Response and Recovery Act.

Audio, Radio New Zealand

For countless families in Canterbury, the earthquake sent china, crystal and other precious glass objects to the floor where they shattered. But Banks Peninsula artist Sarah Rutland says don't despair, and definitely don't throw those broken treasures away. They will never be the same, but they can be reshaped into a different treasure that can itself become a family heirloom.

Audio, Radio New Zealand

Highlights from Radio New Zealand National's programmes for the week ending Friday 8 October. This week.....Canterbury marks a month since its earthquake, a co-producer of The Hobbit speaks out about union activity threatening the film's production in New Zealand, can the Commonwealth Games media stomach Delhi, Michael Caine talks about his new autobiography and we get the lowdown on whitebait.

Audio, Radio New Zealand

Six years on from the Christchurch earthquakes, one in five residents of the city say the disaster is still taking its toll. The latest wellbeing survey by the Canterbury DHB found people living in north-east and east Christchurch were the most likely to be suffering from issues such as anxiety, from ongoing aftershocks, being in a damaged environment, and surrounded by construction.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Nelson College for Girls year 12 leaders (from left) Sophie Day, Petra Matz, Sascha Miller, Jessica Rose, Kate Mickleson, Ming Pons, Emma Dallison, Yvette Jones-White, Nicola Britten, Eilish Wilson, Zoey Coombs-King, Abigail Goodison and Mackenzie Orange have started a collection at the college of cans and cash to aid people of Canterbury affected by the recent earthquake".

Audio, Radio New Zealand

The Duke of Cambridge will meet with survivors of the mosque attacks and members of the public during his second day in Christchurch today. Prince William is visiting the city to pay respects to the survivors of the massacre and those first on the scene on March the 15th. He'll also lay a wreath at the Canterbury earthquake memorial.

Videos, UC QuakeStudies

A video of Principal Toni Simpson telling the students and teachers of Phillipstown School about the plan to merge their school with Woolston School. Phillipstown is one of twelve schools which is set to merge in the Education Renewal Recovery Programme. The programme was created by the Minister of Education in the wake of the 2010 and 2011 Canterbury earthquakes.

Images, UC QuakeStudies

Portaloos on the Pine Mound, part of Festival of Flowers. Each portaloo was decorated with various floral features. This one has been decorated in Canterbury colours, red and black. A stuffed figurine is dressed as a Crusaders rugby player. At the entrance of the portaloo is a sign that says 'Please don't touch or enter the Port-a-loos!'.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Nelson College for Girls year 12 leaders (from left) Sophie Day, Petra Matz, Sascha Miller, Jessica Rose, Kate Mickleson, Ming Pons, Yvette Jones-White, Nicola Britten, Eilish Wilson (obscured), Zoey Coombs-King, Abigail Goodison and Mackenzie Orange have started a collection at the college of cans and cash to aid people of Canterbury affected by the recent earthquake".

Videos, UC QuakeStudies

A video of a press conference about the ChristChurch Cathedral. The video includes statements by Jim Anderton and Stefano Pampanin, Associate Professor of Engineering at the University of Canterbury. Anderton and Pampanin discuss a report produced by the Great Christchurch Buildings Trust (GCBT) which outlines how the cathedral could be safely restored. The Anglican Church has agreed to review the report.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Members of the Red Cross civil defence response team and South Canterbury Police have been in Christchurch helping with the earthquake clean up. Welfare checks required the team to walk along River Road checking on householders. Pictured from left are Aaron Sole, Andy Todd, Anna Munro, Ken Weavers, Tim Mitchell (Emergency Management Officer) and Tom Connolly".

Audio, Radio New Zealand

An inquiry into the Earthquake Commission has found it was poorly prepared for the Canterbury earthquakes - and has left people with a "deep mistrust of government" that will take years to overcome. The government has this morning released findings from the inquiry, chaired by Dame Silvia Cartwright. Our Christchurch reporter, Conan Young, has been reading through the details and spoke with Māni Dunlop.