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Articles, UC QuakeStudies

A copy of a letter from Hugo Kristinsson which was sent to Roger Sutton on 19 September 2013. The letter was sent on behalf of Empowered Christchurch. In the letter, Kristinsson expresses his concern about changes to the Building Act which he states, 'waive liability for the Building Consent Authority when repairs are carried out on homes with land damage'. He also discusses the CERA community forums, which he feel are not fufilling their purpose of supporting and informing the Canterbury community. Lastly, Kristinsson lodges an Official Information Act request, asking for all forum notices and minutes to be released to the public and for access to land information to be provided.

Images, UC QuakeStudies

A photograph an Anna Wilson, Physical Health Advisor for Sport Canterbury, taking part in #FiveYearsOn. Sport Canterbury was an All Right? Champion. Wilson holds a sign reading, 'Five years on, I feel... Upset as to what we have lost and what we have gone through but excited for what may come." All Right? posted the photograph on their Facebook Timeline on 21 February 2016 at 9:11am. All Right? captioned the photograph: "Anna from Sport Canterbury is feeling upset as to what we have lost and what we have gone through but excited for what may come. #fiveyears on #5yearson #allrightnz".

Articles, UC QuakeStudies

A press release from the Office of the Press Secretary in the US White House announcing the deployment of a US Agency for International Development (USAID) Disaster Assistance Response Team (DART) to Christchurch after the 22 February 2011 earthquake. The response team included the Los Angeles County Fire Department Urban Search and Rescue Team who assisted with the search and rescue efforts.

Images, UC QuakeStudies

A photograph of conference leaders and presenters at the beginning of the conference, including Terisa Tagicakibau (Community and Public Health; third from left), Losana Korovulavula (Healthy Families New Zealand; middle), Edna Soli (Pacific Trust Canterbury; third from right) and Diane Fenika (Ministry of Pacific Peoples; second from right). The photograph was taken at the second annual Out of the Heart Pacific Women's Leadership Conference, held at Riccarton Racecourse on 21 May 2016. The conference was sponsored by All Right? and featured posters from the All Right? I am ... Identity project.

Research papers, Lincoln University

Imagined landscapes find their form in utopian dreaming. As ideal places, utopias are set up according to the ideals of their designers. Inevitably, utopias become compromised when they move from the imaginary into the actual. Opportunities to create utopias rely largely on a blank slate, a landscape unimpeded by the inconveniences of existing occupation – or even topography. Christchurch has seen two utopian moments. The first was at the time of European settlement in the mid-nineteenth century, when imported ideals provided a model for a new city. The earthquakes of 2010 and 2011 provided a second point at which utopian dreaming spurred visions for the city. Christchurch’s earthquakes have provided a unique opportunity for a city to re-imagine itself. Yet, as is the fate for all imaginary places, reality got in the way.

Research papers, Lincoln University

Numerous rockfalls released during the 2010–2011 Canterbury earthquake sequence affected vital road sections for local commuters. We quantified rockfall fatality risk on two main routes by adapting a risk approach for roads originally developed for snow avalanche risk. We present results of the collective and individual fatality risks for traffic flow and waiting traffic. Waiting traffic scenarios particularly address the critical spatial-temporal dynamics of risk, which should be acknowledged in operational risk management. Comparing our results with other risks commonly experienced in New Zealand indicates that local rockfall risk is close to tolerability thresholds and likely exceeds acceptable risk.

Research papers, University of Canterbury Library

Semi-empirical models based on in-situ geotechnical tests have become the standard of practice for predicting soil liquefaction. Since the inception of the “simplified” cyclic-stress model in 1971, variants based on various in-situ tests have been developed, including the Cone Penetration Test (CPT). More recently, prediction models based soley on remotely-sensed data were developed. Similar to systems that provide automated content on earthquake impacts, these “geospatial” models aim to predict liquefaction for rapid response and loss estimation using readily-available data. This data includes (i) common ground-motion intensity measures (e.g., PGA), which can either be provided in near-real-time following an earthquake, or predicted for a future event; and (ii) geospatial parameters derived from digital elevation models, which are used to infer characteristics of the subsurface relevent to liquefaction. However, the predictive capabilities of geospatial and geotechnical models have not been directly compared, which could elucidate techniques for improving the geospatial models, and which would provide a baseline for measuring improvements. Accordingly, this study assesses the realtive efficacy of liquefaction models based on geospatial vs. CPT data using 9,908 case-studies from the 2010-2016 Canterbury earthquakes. While the top-performing models are CPT-based, the geospatial models perform relatively well given their simplicity and low cost. Although further research is needed (e.g., to improve upon the performance of current models), the findings of this study suggest that geospatial models have the potential to provide valuable first-order predictions of liquefaction occurence and consequence. Towards this end, performance assessments of geospatial vs. geotechnical models are ongoing for more than 20 additional global earthquakes.