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Images, Alexander Turnbull Library

The cartoon shows the letters of the name 'Christchurch' as blocks of stone that have collapsed into a pile of rubble; on top is a single rose. Refers to the Christchurch earthquake of Saturday 4th September 2010. Quantity: 1 digital cartoon(s).

Images, UC QuakeStudies

HITLab NZ's Andreas Dunser and UC clinical psychologists Dr Janet Carter, Dr Eileen Britt and Associate Professor Martin Dorahy, who are creating an earthquake simulator at the University of Canterbury to investigate ways to help Cantabrians overcome post-traumatic stress disorders caused by ongoing seismic activity.

Images, UC QuakeStudies

HITLab NZ's Andreas Dunser and UC clinical psychologists Dr Janet Carter, Dr Eileen Britt and Associate Professor Martin Dorahy, who are creating an earthquake simulator at the University of Canterbury to investigate ways to help Cantabrians overcome post-traumatic stress disorders caused by ongoing seismic activity.

Research papers, University of Canterbury Library

The Civil Defense understanding of the role of radio in disaster tends to focus on its value in providing essential information during and after the event. However this role is compromised when a station’s premises are destroyed, or rendered inaccessible by official cordons. The Radio Quake study examines how radio stations in Christchurch managed to resume broadcasting in the aftermath of the earthquake of February 22, 2011. In New Zealand’s heavily networked and commercialised radio environment there is a significant disparity between networked and independent stations’ broadcast commitments and resourcing. All Christchurch radio broadcasters were forced to improvise new locations, complex technical workarounds, and responsive styles of broadcasting after the February 22 earthquake, but the need to restore, or maintain, a full on air presence after the earthquake, rested entirely on often financially tenuous, locally owned and staffed independent radio: student, Iwi, community access, and local commercial stations. This paper will explore the resourcefulness and resilience of broadcasters riding out the aftershocks in hotels, motels, bedrooms, and a horse truck, using digital technologies in new ways to reimagine the practice of radio in Christchurch.

Research papers, Victoria University of Wellington

The last seven years have seen southern New Zealand a ected by several large and damaging earthquakes: the moment magnitude (MW) 7.8 Dusky Sound earthquake on 15 July 2009, the MW 7.1 Dar eld (Canterbury) earthquake on 4 September 2010, and most notably the MW 6.2 Christchurch earthquake on 22 February 2011 and the protracted aftershock sequence. In this thesis, we address the postseismic displacement produced by these earthquakes using methods of satellite-based geodetic measurement, known as Interferometric Synthetic Aperture Radar (InSAR) and Global Positioning System (GPS), and computational modelling.  We observe several ground displacement features in the Canterbury and Fiordland regions during three periods: 1) Following the Dusky Sound earthquake; 2) Following the Dar eld earthquake and prior to the Christchurch earthquake; and 3) Following the Christchurch earthquake until February 2015.  The ground displacement associated with postseismic motion following the Dusky Sound earthquake has been measured by continuous and campaign GPS data acquired in August 2009, in conjunction with Di erential Interferometric Synthetic Aperture Radar (DInSAR) observations. We use an afterslip model, estimated by temporal inversion of geodetic data, with combined viscoelastic rebound model to account for the observed spatio-temporal patterns of displacement. The two postseismic processes together induce a signi cant displacement corresponding to principal extensional and contractual strain rates of the order of 10⁻⁷ and 10⁻⁸ yr⁻¹ respectively, across most of the southern South Island.  We also analyse observed postseismic displacement following the Dusky Sound earthquake using a new inversion approach in order to describe afterslip in an elasticviscoelastic medium. We develop a mathematical framework, namely the "Iterative Decoupling of Afterslip and Viscoelastic rebound (IDAV)" method, with which to invert temporally dense and spatially sparse geodetic observations. We examine the IDAV method using both numerical and analytical simulations of Green's functions.  For the post-Dar eld time interval, postseismic signals are measured within approximately one month of the mainshock. The dataset used for the post-Dar eld displacement spans the region surrounding previously unrecognised faults that ruptured during the mainshock. Poroelastic rebound in a multi-layered half-space and dilatancy recovery at shallow depths provide a satisfactory t with the observations.  For the post-Christchurch interval, campaign GPS data acquired in February 2012 to February 2015 in four successive epochs and 66 TerraSAR-X (TSX) SAR acquisitions in descending orbits between March 2011 and May 2014 reveal approximately three years of postseismic displacement. We detect movement away from the satellite of ~ 3 mm/yr in Christchurch and a gradient of displacement of ~ 4 mm/yr across a lineament extending from the westernmost end of the Western Christchurch Fault towards the eastern end of the Greendale East Fault. The postseismic signals following the Christchurch earthquake are mainly accounted for by afterslip models on the subsurface lineament and nearby faults.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Images, UC QuakeStudies

Post-graduate students who went on an exchange to Oxford after the February earthquakes talking to Vice-Chancellor Rod Carr at a function with Vice Chancellor Rod Car and Vice Chancellor of the University of Oxford Andrew Hamilton to sign a Memorandum of Understand between the two Universities.

Research papers, The University of Auckland Library

The Christchurch earthquakes have highlighted the importance of low-damage structural systems for minimising the economic impacts caused by destructive earthquakes. Post-tensioned precast concrete walls have been shown to provide superior seismic resistance to conventional concrete construction by minimising structural damage and residual drifts through the use of a controlled rocking mechanism. The structural response of unbonded post-tensioned precast concrete wall systems, with and without additional energy dissipating elements, were investigated by means of pseudo-static cyclic, snap back and forced vibration testing with shake table testing to be completed. Two types of post-tensioned rocking wall system were investigated; a single unbonded post-tensioned precast concrete wall or Single Rocking Wall (SRW) and a system consisting of a Precast Wall with End Columns (PreWEC). The equivalent viscous damping (EVD) was evaluated using both the pseudo-static cyclic and snap back test data for all wall configurations. The PreWEC configurations showed an increase in EVD during the snap back tests in comparison to the cyclic test response. In contrast the SRW showed lower EVD during the snap back tests in comparison to the SRW cyclic test response. Despite residual drifts measured during the pseudo-static cyclic tests, negligible residual drift was measured following the snap back tests, highlighting the dynamic shake-down that occurs during the free vibration decay. Overall, the experimental tests provided definitive examples of the behaviour of posttensioned wall systems and validated their superior performance compared to reinforced concrete construction when subjected to large lateral drifts.

Images, Alexander Turnbull Library

The cartoon shows Christchurch mayor Bob Parker and his wife in bed. Bob Parker's wife says 'Bob darling, the chances of a news crew bursting in here at this time of night are virtually nil, so please take that bloody jacket off...' Context - Bob Parker, it is true, seems to be wearing the same trendy orange and black 'site manager's jacket for the very many photo opportunities afforded post earthquake of 22 February 2011. Quantity: 1 digital cartoon(s).

Research papers, University of Canterbury Library

Very little research exists on total house seismic performance. This testing programme provides stiffness and response data for five houses of varying ages including contributions of non-structural elements. These light timber framed houses in Christchurch, New Zealand had minor earthquake damage from the 2011 earthquakes and were lateral load tested on site to determine their strength and stiffness, and preliminary damage thresholds. Dynamic characteristics were also investigated. Various loading schemes were utilised including quasi-static loading above the foundation, unidirectional loading through the floor diaphragm, cyclic quasi-static loading and snapback tests. Dynamic analysis on two houses provided the seismic safety levels of post-quake houses with respect to local hazard levels. Compared with New Zealand Building Standards all the tested houses had an excess of strength, damage is a significant consideration in earthquake resilience and was observed in all of the houses. A full size house laboratory test is proposed.

Audio, Radio New Zealand

One of New Zealand's most celebrated authors, Kate De Goldi's short fiction, novels and picture books engage children, teenagers and adults alike. Novel The 10pm Question was published to critical acclaim, quickly becoming an iconic piece of New Zealand literature. Her latest, Eddy, Eddy is being met with similar excitement.