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Videos, UC QuakeStudies

A video of an interview with a family who are living in a shed. The family lost their rental property after the owners' other property was damaged by the 22 February 2011 earthquake. The family are one of many living in sheds, garages, and tents despite the government's claim that there is no housing crisis in Christchurch.

Images, UC QuakeStudies

A digger demolishing the Ozone Dressing Sheds building. The photographer comments, "This is the end of the Ozone Dressing Sheds built in 1914. The two storey Ozone Cafe, which was a hotel, will be given it's coup de grace on Friday. They were gutted in a spectacular fire in 1922, but were unable to be saved after the Christchurch earthquake on 22 February 2011".

Research papers, University of Canterbury Library

On 22 February 2011, Ōtautahi Christchurch was struck by a devastating earthquake. The city was changed forever: lives were lost, buildings destroyed and much of the city’s infrastructure needed to be repaired or replaced. One of the unexpected outcomes of the process of recovery was the volume of archaeological work that was carried out in the city, including the substantial amount of buildings archaeology that was undertaken (that is, recording standing buildings prior to and during their demolition, using archaeological techniques). Amongst the numerous buildings recorded in this way were 101 houses from across the city (but concentrated in those areas hit hardest by the earthquakes), built between 1850 and 1900. This work yielded a wealth of data about what houses in the city looked like in the nineteenth century. It is this data that forms the core of my thesis, providing an opportunity to examine the question of what life was like in nineteenth century Christchurch through these houses and the people who built them. Christchurch was founded in 1850 by European settlers, most of whom were English. These people came to New Zealand to build a better life for themselves and their families. For many of them, this ‘better life’ included the possibility of owning their own home and, in some instances, building that house (or at least, commissioning its construction). The buildings archaeology data collected following the Canterbury earthquakes enabled a detailed analysis of what houses in the city looked like in the nineteenth century – their form, and both their external and internal appearance – and how this changed as the century progressed. A detailed examination of the lives of those who built 21 of the houses enabled me to understand why each house looked the way it did, and how the interplay of class, budget and family size and expectations (amongst other factors) shaped each house. It is through these life stories that more about life in Christchurch in the nineteenth century was revealed. These are stories of men and women, of success and failure, of businesses and bankruptcies. There are themes that run through the stories: class, appearances, death, religion, gender, improvement. Just as importantly, though, they reveal the everyday experiences of people as they set about building a new city. Thus, through the archaeology of the houses and the history of the people who built them, an earthquake has revealed more about life in nineteenth century Christchurch, as well as providing the means for a deeper understanding of the city’s domestic architecture.

Images, UC QuakeStudies

Two diggers on top of a pile of rubble inside the partially demolished Ozone Dressing Sheds building. The photographer comments, "The Ozone must have suffered in the February earthquake more than people thought. They were starting to repaint it inside, but it looks like they must have run out of filler".

Images, UC QuakeStudies

The former Ozone Dressing Sheds in North New Brighton, with broken and boarded-up windows. The photographer comments, "This is the Ozone as it was before it was demolished. It appeared to have been in the process of being redecorated internally, but the February Christchurch earthquake seems to have caused its demise".

Audio, Radio New Zealand

Resilience and community spirit have shone through in North Canterbury in the aftermath of the earthquake. With no active civil defence post in operation in Cheviot in the days after the 7.8 quake, a group of locals mobilised a task force to support those in need. Further north at Mendip Hills Station farm manager Simon Lee has been repairing broken water pipes and clearing slips in time for weaning, while on Ben Lissington's dairy farm near Waiau, milk tankers are having to go off the beaten track to get to the rotary shed after a six metre section of the road was destroyed.

Images, eqnz.chch.2010

Tell me... Why This is the path I'll never tread These are the dreams I'll dream instead This is the joy that's seldom spread These are the tears... The tears we shed This is the fear This is the dread These are the contents of my head And these are the years that we have spent And this is what they represent And this is how I feel Do you know h...

Audio, Radio New Zealand

A frantic rewrite was required during the lockdown last year by novellist Janna Ruth, who'd set her novel Time to remember in Christchurch throughout 2020. The book's characters are mainly preoccupied by the 10th anniversary of the September 2010 Canterbury earthquake, but Janna knew she needed to include the pandemic once it took hold. But in fact she'd started working on the novel back in 2005, well before both traumatic events. Janna came to New Zealand from Germany to study geology, and she uses some of her memories from her university years in Time to remember. In it a group of university students bond and bicker, some of them still scarred by the earthquake a decade earlier.

Audio, Radio New Zealand

This week marked the 4th anniversary of the Christchurch and Canterbury earthquake. New research from the University of Otago in Christchurch with earthquake survivors is shedding some light on the question of what makes some people cope better with trauma than others. A group of psychiatrists and psychologists from the University have been studying a group of more than 100 Cantabrians exposed to high levels of stress during the earthquakes who coped well. They compared this group against a group of patients with post-earthquake trauma, being treated by the Adult Specialist Services Earthquake Treatment Team, or ASSETT, set up by the Canterbury DHB. Dr Gini McIntosh from the Otago University is part of the research team, and one of the psychologists with ASSETT.

Audio, Radio New Zealand

Nine to Noon continues to look at who's in the running to head up our biggest cities after local elections in October, with a focus today on the 11 candidates vying to be mayor of Christchurch. Three-term mayor Lianne Dalziel announced last July she'd be stepping down as mayor, having overseen nearly a decade's worth of the city's rebuild following the devastating earthquakes. The two major contenders for the role are Burwood city councillor Phil Mauger and former Canterbury District Health Board chief executive David Meates. Other contenders include the city's Wizard, a coffee boss, pro-gun pastor and a candidate who's stood in every election since 1971. For more, Kathryn is joined by David Williams, the South Island correspondent for Newsroom.co.nz.

Audio, Radio New Zealand

A review of the week's news including... A tsunami warning after a severe 7.1 earthquake north of East Cape, Havelock North's residents finally get the chance to grill their local leaders, the Environment Minister says people who insist that every lake and river should be safe to swim in are being unrealistic, Kim Dotcom wins his bid to live stream his High Court appeal against his extradition, New Zealanders who've been living in Australia for up to ten years say they're reaching breaking point, legal action over faulty steel mesh triggers doubts about some house insurance, a prominent Maori leader is found guilty of defrauding his fellow trustees in the Wellington Tenths Trust, a South Canterbury farming official says stealing 500 cows is like stealing the Crown jewels - complicated but not impossible, Auckland mayoral candidate Vic Crone pledges to bring forward the cross-harbour tunnel project by a decade or more after saying she'd make no commitments on it, while another candidate, Phil Goff wants to introduce a living wage for all council staff, the transgender community wants the waiting times for sex change operations cut, a sit down chat with Olympic pole vaulting bronze medalist Eliza McCartney and the real story behind the 2nd Bledisloe Cup test in Wellington from a former Wallaby.

Research papers, University of Canterbury Library

Surface rupture of the previously unrecognised Greendale Fault extended west-east for ~30 km across alluvial plains west of Christchurch, New Zealand, during the Mw 7.1 Darfield (Canterbury) earthquake of September 2010. Surface rupture displacement was predominantly dextral strike-slip, averaging ~2.5 m, with maxima of ~5 m. Vertical displacement was generally less than 0.75 m. The surface rupture deformation zone ranged in width from ~30 to 300 m, and comprised discrete shears, localised bulges and, primarily, horizontal dextral flexure. About a dozen buildings, mainly single-storey houses and farm sheds, were affected by surface rupture, but none collapsed, largely because most of the buildings were relatively flexible and resilient timber-framed structures and also because deformation was distributed over a relatively wide zone. There were, however, notable differences in the respective performances of the buildings. Houses with only lightly-reinforced concrete slab foundations suffered moderate to severe structural and non-structural damage. Three other buildings performed more favourably: one had a robust concrete slab foundation, another had a shallow-seated pile foundation that isolated ground deformation from the superstructure, and the third had a structural system that enabled the house to tilt and rotate as a rigid body. Roads, power lines, underground pipes, and fences were also deformed by surface fault rupture and suffered damage commensurate with the type of feature, its orientation to the fault, and the amount, sense and width of surface rupture deformation.

Research papers, University of Canterbury Library

Social media have changed disaster response and recovery in the way people inform themselves, provide community support and make sense of unfolding and past events online. During the Canterbury earthquakes of 2010 and 2011 social media platforms such as Facebook and Twitter became part of the story of the quakes in the region, as well as a basis for ongoing public engagement during the rebuild efforts in Christchurch. While a variety of research has been conducted on the use of social media in disaster situations (Bruns & Burgess, 2012; Potts, Seitzinger, Jones, & Harrison, 2011; Shklovski, Palen, & Sutton, 2008), studies about their uses in long-term disaster recovery and across different platforms are underrepresented. This research analyses networked practices of sensemaking around the Canterbury earthquakes over the course of disaster response, recovery and rebuild, focussing on Facebook and Twitter. Following a mixed methodological design data was gathered in interviews with people who started local Facebook pages, and through digital media methods of data collection and computational analysis of public Facebook pages and a historical Twitter dataset gathered around eight different earthquake-related events between 2010 and 2013. Data is further analysed through discursive and narrative tools of inquiry. This research sheds light on communication practices in the drawn-out process of disaster recovery on the ground in connecting different modes of discourse. Examining the ongoing negotiation of networked identities through technologically mediated social practices during Canterbury’s rebuild, the connection between online environments and the city of Christchurch, as a physical place, is unpacked. This research subsequently develops a new methodology to study social media platforms and provide new and detailed information on both the communication practices in issue-based online publics and the ongoing negotiation of the impact of the Canterbury earthquakes through networked digital means.

Research papers, University of Canterbury Library

The structure and geomorphology of active orogens evolves on time scales ranging from a single earthquake to millions of years of tectonic deformation. Analysis of crustal deformation using new and established remote sensing techniques, and integration of these data with field mapping, geochronology and the sedimentary record, create new opportunities to understand orogenic evolution over these timescales. Timor Leste (East Timor) lies on the northern collisional boundary between continental crust from the Australian Plate and the Banda volcanic arc. GPS studies have indicated that the island of Timor is actively shortening. Field mapping and fault kinematic analysis of an emergent Pliocene marine sequence identifies gentle folding, overprinted by a predominance of NW-SE oriented dextral-normal faults and NE-SW oriented sinistral-normal faults that collectively bound large (5-20km2) bedrock massifs throughout the island. These fault systems intersect at non-Andersonian conjugate angles of approximately 120° and accommodate an estimated 20 km of orogen-parallel extension. Folding of Pliocene rocks in Timor may represent an early episode of contraction but the overall pattern of deformation is one of lateral crustal extrusion sub-parallel to the Banda Arc. Stratigraphic relationships suggest that extrusion began prior to 5.5 Ma, during and after initial uplift of the orogen. Sedimentological, geochemical and Nd isotope data indicate that the island of Timor was emergent and shedding terrigenous sediment into carbonate basins prior to 4.5 Ma. Synorogenic tectonic and sedimentary phases initiated almost synchronously across much of Timor Leste and <2 Myr before similar events in West Timor. An increase in plate coupling along this obliquely converging boundary, due to subduction of an outlying continental plateau at the Banda Trench, is proposed as a mechanism for uplift that accounts for orogen-parallel extension and early uplift of Timor Leste. Rapid bathymetric changes around Timor are likely to have played an important role in evolution of the Indonesian Seaway. The 2010 Mw 7.1 Darfield (Canterbury) earthquake in New Zealand was complex, involving multiple faults with strike-slip, reverse and normal displacements. Multi-temporal cadastral surveying and airborne light detection and ranging (LiDAR) surveys allowed surface deformation at the junction of three faults to be analyzed in this study in unprecedented detail. A nested, localized restraining stepover with contractional bulging was identified in an area with the overall fault structure of a releasing bend, highlighting the surface complexities that may develop in fault interaction zones during a single earthquake sequence. The earthquake also caused river avulsion and flooding in this area. Geomorphic investigations of these rivers prior to the earthquake identify plausible precursory patterns, including channel migration and narrowing. Comparison of the pre and post-earthquake geomorphology of the fault rupture also suggests that a subtle scarp or groove was present along much of the trace prior to the Darfield earthquake. Hydrogeology and well logs support a hypothesis of extended slip history and suggests that that the Selwyn River fan may be infilling a graben that has accumulated late Quaternary vertical slip of <30 m. Investigating fault behavior, geomorphic and sedimentary responses over a multitude of time-scales and at different study sites provides insights into fault interactions and orogenesis during single earthquakes and over millions of years of plate boundary deformation.

Research papers, Victoria University of Wellington

The Canterbury earthquake sequence (2010-2011) was the most devastating catastrophe in New Zealand‘s modern history. Fortunately, in 2011 New Zealand had a high insurance penetration ratio, with more than 95% of residences being insured for these earthquakes. This dissertation sheds light on the functions of disaster insurance schemes and their role in economic recovery post-earthquakes.  The first chapter describes the demand and supply for earthquake insurance and provides insights about different public-private partnership earthquake insurance schemes around the world.  In the second chapter, we concentrate on three public earthquake insurance schemes in California, Japan, and New Zealand. The chapter examines what would have been the outcome had the system of insurance in Christchurch been different in the aftermath of the Canterbury earthquake sequence (CES). We focus on the California Earthquake Authority insurance program, and the Japanese Earthquake Reinsurance scheme. Overall, the aggregate cost of the earthquake to the New Zealand public insurer (the Earthquake Commission) was USD 6.2 billion. If a similar-sized disaster event had occurred in Japan and California, homeowners would have received only around USD 1.6 billion and USD 0.7 billion from the Japanese and Californian schemes, respectively. We further describe the spatial and distributive aspects of these scenarios and discuss some of the policy questions that emerge from this comparison.  The third chapter measures the longer-term effect of the CES on the local economy, using night-time light intensity measured from space, and focus on the role of insurance payments for damaged residential property during the local recovery process. Uniquely for this event, more than 95% of residential housing units were covered by insurance and almost all incurred some damage. However, insurance payments were staggered over 5 years, enabling us to identify their local impact. We find that night-time luminosity can capture the process of recovery; and that insurance payments contributed significantly to the process of local economic recovery after the earthquake. Yet, delayed payments were less affective in assisting recovery and cash settlement of claims were more effective than insurance-managed repairs.  After the Christchurch earthquakes, the government declared about 8000 houses as Red Zoned, prohibiting further developments in these properties, and offering the owners to buy them out. The government provided two options for owners: the first was full payment for both land and dwelling at the 2007 property evaluation, the second was payment for land, and the rest to be paid by the owner‘s insurance. Most people chose the second option. Using data from LINZ combined with data from Stats NZ, the fourth chapter empirically investigates what led people to choose this second option, and how peer effect influenced the homeowners‘ choices.  Due to climate change, public disclosure of coastal hazard information through maps and property reports have been used more frequently by local government. This is expected to raise awareness about disaster risks in local community and help potential property owners to make informed locational decision. However, media outlets and business sector argue that public hazard disclosure will cause a negative effect on property value. Despite this opposition, some district councils in New Zealand have attempted to implement improved disclosure. Kapiti Coast district in the Wellington region serves as a case study for this research. In the fifth chapter, we utilize the residential property sale data and coastal hazard maps from the local district council. This study employs a difference-in-difference hedonic property price approach to examine the effect of hazard disclosure on coastal property values. We also apply spatial hedonic regression methods, controlling for coastal amenities, as our robustness check. Our findings suggest that hazard designation has a statistically and economically insignificant impact on property values. Overall, the risk perception about coastal hazards should be more emphasized in communities.