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Images, UC QuakeStudies

A photograph of two large signs that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of a large sign at Agropolis that is part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of a large sign at Agropolis that is part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of people walking past two large signs that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Manchester and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Manchester and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Gloucester and Colombo Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of two large signs at Agropolis that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of a large sign at The Commons that is part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Gloucester and Colombo Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on the corner of Colombo and Hereford Streets that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of two large signs at Cathedral Junction that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on High Street that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of signs on High Street that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of a large sign at The Commons that is part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Images, UC QuakeStudies

A photograph of two large signs at Re:START Mall that are part of Signs of Things to Come. This was a wayfinding project by Generation Zero and Diadem, for FESTA 2014. The signage gives directions to key central city and FESTA locations, and compares the current and future potential of transport in Christchurch.

Videos, UC QuakeStudies

A video of dance and physical theatre featuring Matt Grant and Elizabeth Guthrey, incorporating several central city locations. The voiceover is a poem written and read by Matt Grant.

Research papers, University of Canterbury Library

Using case studies from the 2010-2011 Canterbury, New Zealand earthquake sequence, this study assesses the accuracies of paleoliquefaction back-analysis methods and explores the challenges, techniques, and uncertainties associated with their application. While liquefaction-based back-analyses have been widely used to estimate the magnitudes of paleoearthquakes, their uncertain efficacies continue to significantly affect the computed seismic hazard in regions where they are relied upon. Accordingly, their performance is evaluated herein using liquefaction data from modern earthquakes with known magnitudes. It is shown that when the earthquake source location and mechanism are known, back-analysis methods are capable of accurately deriving seismic parameters from liquefaction evidence. However, because the source location and mechanism are often unknown in paleoseismic studies, and because accurate interpretation is shown to be more difficult in such cases, new analysis techniques are proposed herein. An objective parameter is proposed to geospatially assess the likelihood of any provisional source location, enabling an analyst to more accurately estimate the magnitude of a liquefaction-inducing paleoearthquake. This study demonstrates the application of back-analysis methods, provides insight into their potential accuracies, and provides a framework for performing paleoliquefaction analyses worldwide.

Research papers, Lincoln University

The Christchurch earthquakes brought to an abrupt halt a process of adaptive reuse and gentrification that was underway in the south eastern corner of the central business district. The retail uses that were a key to the success of this area pre-earthquake could be characterised as small, owner operated, quirky, bohemian, chaotic and relatively low rent. This research reports on the progress of a long term, comprehensive case study that follows the progress of these retailers both before and after the earthquakes. Findings include the immediate post-earthquake intentions to resume business in the same location as soon as possible were thwarted by government imposed cordons of the CBD that were only lifted nearly three years later. But, businesses were resilient and generally reinvented themselves quickly in alternative suburban locations where government “rebuild” restrictions were absent. It remains to be seen if this type of retail will ever return to the CBD as government imposed plans and the rents demanded for retail space in new buildings appear to preclude small owner-operated businesses.

Research papers, The University of Auckland Library

The progressive damage and subsequent demolition of unreinforced masonry (URM) buildings arising from the Canterbury earthquake sequence is reported. A dataset was compiled of all URM buildings located within the Christchurch CBD, including information on location, building characteristics, and damage levels after each major earthquake in this sequence. A general description of the overall damage and the hazard to both building occupants and to nearby pedestrians due to debris falling from URM buildings is presented with several case study buildings used to describe the accumulation of damage over the earthquake sequence. The benefit of seismic improvement techniques that had been installed to URM buildings is shown by the reduced damage ratios reported for increased levels of retrofit. Demolition statistics for URM buildings in the Christchurch CBD are also reported and discussed. VoR - Version of Record

Research papers, University of Canterbury Library

This paper concerns the explicit consideration of near-fault directivity in conventional ground motion prediction models, and its implication for probabilistic seismic hazard analysis (PSHA) in New Zealand. The proposed approach utilises recently developed models by Shahi & Baker (2011), which account for both the 'narrowband' nature of the directivity pulse on spectral ordinates, and the probability of pulse occurrence at the site of interest. Furthermore, in order to correctly consider directivity, distributed seismicity sources are considered as finite-faults, as opposed to their (incorrect) conventional treatment as point-sources. The significance of directivity on hazard analysis results is illustrated for various vibration periods at generic sites located in Christchurch and Otira, two locations whose seismic hazard is comprised of notably different seismic sources. When compared to the PSHA results considering directivity and distributed seismicity as finite faults, it is shown that the NZS1170.5:2004 directivity factor is notably unconservative for all vibration periods in Otira (i.e. high seismic hazard region); and unconservative for Christchurch at short-to-moderate vibration periods ( < 3s); but conservative at long periods ( > 4s).

Research papers, University of Canterbury Library

This poster provides a summary of the development of a 3D shallow (z<40m) shear wave velocity (Vs) model for the urban Christchurch, New Zealand region. The model is based on a recently developed Christchurch-specific empirical correlation between Vs and cone penetration test (CPT) data (McGann et al. 2014a,b) and the large high-density database of CPT logs in the greater Christchurch urban area (> 15,000 logs as of 01/01/2014). In particular, the 3D model provides shear wave velocities for the surficial Springston Formation, Christchurch Formation, and Riccarton gravel layers which generally comprise the upper 40m in the Christchurch urban area. Point-estimates are provided on a 200m-by- 200m grid from which interpolation to other locations can be performed. This model has applications for future site characterization and numerical modeling efforts via maps of timeaveraged Vs over specific depths (e.g. Vs30, Vs10) and via the identification of typical Vs profiles for different regions and soil behaviour types within Christchurch. In addition, the Vs model can be used to constrain the near-surface velocities for the 3D seismic velocity model of the Canterbury basin (Lee et al. 2014) currently being developed for the purpose of broadband ground motion simulation.

Research papers, Lincoln University

"Prior to the devastating 2010-2011 Canterbury earthquakes, the city of Christchurch was already exhibiting signs of a housing affordability crisis. The causes and symptoms were similar to those being experienced in Auckland, but the substantial damage to the housing stock caused by the earthquakes added new dimensions and impetus to the problem. Large swathes of the most affordable housing stock in the east of the city were effectively destroyed by the earthquakes. In itself this would have pushed the mean house price upwards, but compounding problems exacerbated the situation. These include the price effects of reduced supply of both rented and owned housing and increased demand from both displaced residents and an influx of rebuild workers. The need for additional temporary housing while repairs were undertaken and the associated insurance pay-outs bidding up rents with improved rental returns leading to increased interest in property investment. Land supply constraints and consenting issues inhibiting the build of new housing and political infighting and uncertainty regarding the future of parts of the city leading to a flight of development activity to peripheral locations and adjoining local authorities. Concerns that the erosion of the city council rating base combined with inadequacy of insurance cover for infrastructure will lead to large rates increases, increased development costs and reduced amenities and services in future years. These and other issuers will be elaborated on in this paper with a view to exploring the way forward for affordable housing Christchurch City."