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Research papers, Victoria University of Wellington

©2019. American Geophysical Union. All Rights Reserved. Earthquakes have been inferred to induce hydrological changes in aquifers on the basis of either changes to well water-levels or tidal behavior, but the relationship between these changes remains unclear. Here, changes in tidal behavior and water-levels are quantified using a hydrological network monitoring gravel aquifers in Canterbury, New Zealand, in response to nine earthquakes (of magnitudes M w 5.4 to 7.8) that occurred between 2008 and 2015. Of the 161 wells analyzed, only 35 contain water-level fluctuations associated with “Earth + Ocean” (7) or “Ocean” (28) tides. Permeability reduction manifest as changes in tidal behavior and increased water-levels in the near field of the Canterbury earthquake sequence of 2010–2011 support the hypothesis of shear-induced consolidation. However, tidal behavior and water-level changes rarely occurred simultaneously (~2%). Water-level changes that occurred with no change in tidal behavior reequilibrated at a new postseismic level more quickly (on timescales of ~50 min) than when a change in tidal behavior occurred (~240 min to 10 days). Water-level changes were more than likely to occur above a peak dynamic stress of ~50 kPa and were more than likely to not occur below ~10 kPa. The minimum peak dynamic stress required for a tidal behavior change to occur was ~0.2 to 100 kPa.

Images, UC QuakeStudies

A poster created by Empowered Christchurch to advertise their submission to the CERA Draft Transition Recovery Plan on social media.The poster reads, "Submission, CERA Draft Transition Recovery Plan. Risk Acceptance. It is the role of insurance companies, the EQC included, to accept the risks covered under their terms of reference/policies and compensate policyholders when such risks eventuate. However, many policyholders in Christchurch have not been compensated for the damage to their homes and their lives. These responsibilities need to be faced by the entities responsible. An equitable solution needs to be found for properties with hazards such as flooding that are a direct result of the earthquakes. In tandem with this, every effort must be made to protect residents from the risks posed by climate change. We need a city that is driven by the people that live in it, and enabled by a bureaucracy that accepts and mitigates risks, rather than transferring them to the most vulnerable residents".

Articles, UC QuakeStudies

Caption reads: "We all wish we could stay here. We want them to repair our homes, but they say they won't and you know nothing will change their minds."

Audio, UC QuakeStudies

An audio recording of a mayoral debate hosted by Generation Zero in partnership with 350 Christchurch. The event was titled Mayoral Debate: a climate-smart Christchurch. It was held on campus at the University of Canterbury on Thursday 22 September, 2016 and was moderated by Catarina Gutierrez of the Ministry of Awesome. The debate was structured as follows: Section 1: Candidates answered set questions sent prior to the event Section 2: Candidates answered set questions they have not seen before Interval Section 3: Candidates answered written questions from the audience (climate-related questions were submitted during the interval and a selection of these were given to the moderator). The audio recording was taken through the University's Echo system.

Research papers, University of Canterbury Library

WCFM & MERG Research Report 2016-002 The Canterbury earthquakes resulted in numerous changes to the waterways of Ōtautahi Christchurch. These included bank destabilisation, liquefaction effects, changes in bed levels, and associated effects on flow regimes and inundation levels. This study set out to determine if these effects had altered the location and pattern of sites utilised by īnanga (Galaxias maculatus) for spawning, which are typically restricted to very specific locations in upper estuarine areas. Extensive surveys were carried out in the Heathcote/Ōpāwaho and Avon/Ōtākaro catchments over the four peak months of the 2015 spawning season. New spawning sites were found in both rivers and analysis against pre-earthquake records identified that other significant changes have occurred. Major changes include the finding of many new spawning sites in the Heathcote/Ōpāwaho catchment. Sites now occur up to 1.5km further downstream than the previously reported limit and include the first records of spawning below the Woolston Cut. Spawning sites in the Avon/Ōtākaro catchment also occur in new locations. In the mainstem, sites now occur both upstream and downstream of all previously reported locations. A concentrated area of spawning was identified in Lake Kate Sheppard at a distinctly different location versus pre-quake records, and no spawning was found on the western shores. Spawning was also recorded for the first time in Anzac Creek, a nearby waterway connected to Lake Kate Sheppard via a series of culverts.

Research papers, The University of Auckland Library

This paper analyses the city of Christchurch, New Zealand, which has been through dramatic changes since it was struck by a series of earthquakes of different intensities between 2010 and 2011. The objective is to develop a deeper understanding of resilience by looking at changes in green and grey infrastructures. The study can be helpful to reveal a way of doing comparative analysis using resilience as a theoretical framework. In this way, it might be possible to assess the blueprint of future master plans by considering how important the interplay between green and grey infrastructure is for the resilience capacity of cities

Images, UC QuakeStudies

The University of Canterbury's E-Learning team's temporary office in the James Hight building. The photographer comments, "Yet another change of workplace for our E-Learning group, as the University juggles people and buildings to carry out earthquake repairs. My desk".

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "The remains of the Convention Centre viewed from Peterborough Street with the Town Hall behind. The skyline from here will change considerably as a number of the tall buildings shaping the skyline are demolished".

Research papers, University of Canterbury Library

The level of destruction from the 2011 Christchurch earthquakes led to changes in the New Zealand seismic building code. The destruction showed that the NZ building codes did not fully performed to expectation and needed Improvement to ensure that impact of future earthquakes would be minimised. The building codes have been amended to improve buildings resilience to earthquake and other related extreme loading conditions. Rebuilding Christchurch with the new modifications in the seismic building code comes with its own unique challenges to the entire system. This project investigates the impact of rebuilding Christchurch with the new seismic Building codes in terms of how the new changes affected the building industry and the management of construction.

Images, UC QuakeStudies

A close-up photograph of a sign about the Fisher's Building, with the words, "Making our mark. An architect's vision contributes to a transformation of the commercial heart of our city. Whether a building survives or becomes just a memory is part of the continually changing Central City. Fisher's Building".

Images, UC QuakeStudies

An image from the All Right? 'Compliments' campaign, used as a cover photo on the All Right? Facebook page. The image reads, "Your smile is life changing." All Right? posted the image to their Facebook page on 10 September 2014 at 11:26am.