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Images for earthquake 2011; more images...

Images, UC QuakeStudies

Deputy Administrator for Protection and National Preparedness at the Federal Emergency Management Agency, Tim Manning, and Michael Layne from the US Embassy in Wellington, speaking to Ray Kennedy, an Area Manager from the New Zealand Fire Service, in the Christchurch Art Gallery about the 22 February 2011 earthquake.

Research papers, University of Canterbury Library

These research papers explore the concept of vulnerability in international human rights law. In the wake of the Christchurch earthquakes of 2010-2011, this research focuses on how "vulnerability" has been used and developed within the wider human rights discourse. They also examine jurisprudence of international human rights bodies, and how the concept of "vulnerability" has been applied. The research also includes a brief investigation into the experiences of vulnerable populations in disaster contexts, focusing primarily on the experiences of "vulnerable persons" in the Christchurch earthquakes and their aftermath.

Videos, UC QuakeStudies

A video of students from Merrin School laying 185 flowers at the foot of the school flag pole on the second anniversary of the 22 February 2011 earthquake. Each flower represents one of the lives lost in the earthquake. The video also includes audio from the school's memorial service, including a poem by Alexis Blackie read by her sister Vanessa Blackie, and a speech by Principal Lisa Dillon-Robertson.

Audio, Radio New Zealand

There's been a huge outpouring of emotion in Australia at the death of cricketing legend Shane Warne, aged 52, while he was on a holiday in Thailand. Comedian, Ben Hurley, talks to Jesse about meeting him at a Christchurch earthquake charity match in 2011.

Videos, UC QuakeStudies

A video of an interview with Rick Hellings, Managing Director of Smiths City Group, about the experiences of businesses in the aftermath of the 2010 and 2011 Canterbury earthquakes. Hellings talks about the changes in regulation and geography in Christchurch after the earthquakes and the importance of managing risks, understanding insurance, and being prepared for change. He also talks about the importance of keeping customers and business partners informed, looking after staff and customers, and reducing costs to offset the increases in rent. This video is part of a series about businesses in Christchurch after the earthquakes.

Images, UC QuakeStudies

A photograph of the damaged Provincial Council Chambers on Durham Street. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

A photograph of two workers walking down Gloucester Street. To the right, the earthquake-damaged Canterbury Times and Star Building can be seen. A car parked in front has been crushed by falling debris.

Audio, Radio New Zealand

The Aromaunga Baxters Flowers nursery in Heathcote, Christchurch sits right above the point where the earthquake struck on 22 February 2011. The greenhouses on the steep slopes of the Port Hills, as well as a big old villa and other brick buildings were badly damaged. Ten years on co-owner John Baxter says the earthquake damage is still being repaired, but sales have been boosted by a lack of imported flowers due to Covid-19 restrictions.

Research papers, The University of Auckland Library

The current seismic design practice for reinforced concrete (RC) walls has been drawn into question following the unsatisfactory performance of several RC wall buildings during the Canterbury earthquakes. An overview of current research being undertaken at the University of Auckland into the seismic behaviour of RC walls is presented. The main objectives of this research project are to understand the observed performance of RC walls in Christchurch, quantify the seismic loads on RC walls, and developed improved design procedures for RC walls that will assist in revisions to the New Zealand Concrete Structures Standard. A database summarising the performance of RC wall buildings in the Christchurch CBD was collated to identify damage modes and case-study buildings. A detailed investigation is underway to verify the seismic performance of lightly reinforced concrete walls and initial numerical modeling and small-scale tests are presented in addition to details of planned experimental tests of RC walls. Numerical modelling is being used to understand the potential influence that interactions between walls and other structural elements have on the seismic response of buildings and the loads generated on RC walls. The results from finite element analysis of a severely damaged RC wall in Christchurch highlighted the effect that the floor diaphragms have on the distribution of shear stains in the wall.

Research papers, University of Canterbury Library

This article presents a quantitative case study on the site amplification effect observed at Heathcote Valley, New Zealand, during the 2010-2011 Canterbury earthquake sequence for 10 events that produced notable ground acceleration amplitudes up to 1.4g and 2.2g in the horizontal and vertical directions, respectively. We performed finite element analyses of the dynamic response of the valley, accounting for the realistic basin geometry and the soil non-linear response. The site-specific simulations performed significantly better than both empirical ground motion models and physics based regional-scale ground motion simulations (which empirically accounts for the site effects), reducing the spectral acceleration prediction bias by a factor of two in short vibration periods. However, our validation exercise demonstrated that it was necessary to quantify the level of uncertainty in the estimated bedrock motion using multiple recorded events, to understand how much the simplistic model can over- or under-estimate the ground motion intensities. Inferences from the analyses suggest that the Rayleigh waves generated near the basin edge contributed significantly to the observed high frequency (f>3Hz) amplification, in addition to the amplification caused by the strong soil-rock impedance contrast at the site fundamental frequency. Models with and without considering soil non-linear response illustrate, as expected, that the linear elastic assumption severely overestimates ground motions in high frequencies for strong earthquakes, especially when the contribution of basin edge-generated Rayleigh waves becomes significant. Our analyses also demonstrate that the effect of pressure-dependent soil velocities on the high frequency ground motions is as significant as the amplification caused by the basin edge-generated Rayleigh waves.

Images, Alexander Turnbull Library

The scene shows a tract of land with a jagged crack running through it. An arm representing the 'Council' reaches out of the crack and points a finger. Someone from the 'Tibetan Community' whose head cannot be seen says 'Surely you can lift finger higher than that?' Context: The Dalai Lama visited Christchurch after the earthquakes but The Dalai Lama's New Zealand representative is accusing the Christchurch City Council of snubbing the spiritual leader during his visit, suggesting ties with China are to blame. In a letter to Christchurch Mayor Bob Parker, New Zealand Tibetan community representative Thuten Kesang said he was disappointed the council "did not lift a finger to help" the Dalai Lama during his visit to the earthquake-hit city in June. Christchurch has a sister-city relationship with the Chinese Gansu Province and Wuhan City. Kesang said he believed this relationship made the council reluctant to engage with the exiled Tibetan leader. (Press - 10 August 2011) Quantity: 1 digital cartoon(s).

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 seismic performance and parameter identification of the base isolated Christchurch Women’s Hospital (CWH) building are investigated using the recorded seismic accelerations during the two large earthquakes in Christchurch. A four degrees of freedom shear model is applied to characterize the dynamic behaviour of the CWH building during these earthquakes. A modified Gauss-Newton method is employed to identify the equivalent stiffness and Rayleigh damping coefficients of the building. The identification method is first validated using a simulated example structure and finally applied to the CWH building using recorded measurements from the Mw 6.0 and Mw 5.8 Christchurch earthquakes on December 23, 2011. The estimated response and recorded response for both earthquakes are compared with the cross correlation coefficients and the mean absolute percentage errors reported. The results indicate that the dynamic behaviour of the superstructure and base isolator was essentially within elastic range and the proposed shear linear model is sufficient for the prediction of the structural response of the CWH Hospital during these events.

Images, UC QuakeStudies

A photograph of a letter on display in the Canterbury Quakes exhibition at the Canterbury Museum. The letter was found in a time capsule in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of the lens of the Townsend Telescope. The lens is the most crucial component of the telescope. Despite damage to the surrounding parts, the lens was unharmed during the 22 February 2011 earthquake. Because of this, the telescope can be restored.

Images, UC QuakeStudies

A photograph of members of Crack'd for Christchurch, who have been breaking up pieces of china.Crack'd for Christchurch comments, "September 2011. Another cracking day, one year after the first earthquake. From left: Marie Hudson, Robyn Black, and Sharon Wilson."

Images, UC QuakeStudies

A photograph of a letter on display in the Canterbury Quakes exhibition at the Canterbury Museum. The letter was found in a time capsule in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.