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Videos, UC QuakeStudies

A video of a presentation by Hugh Cowan, General Manager of Reinsurance, Research and Education at EQC, at the 2016 Seismics in the City Conference. The presentation is titled, "Working Together Strengthens Understanding".The abstract for the presentation reads, "Hear how EQC led a collaborative research project in Canterbury that involved diverse stakeholders from government, council officials and insurers to homeowners, and why collaboration means that Canterbury's geotechnical data is now helping to inform research locally, nationally and around the world."

Research papers, University of Canterbury Library

The empirical liquefaction triggering chart of Idriss and Boulanger (2008) is compared to direct measurements of the cyclic resistance of Christchurch silty sands via undisturbed and reconstituted lab specimens. Comparisons suggest that overall there is a reasonable agreement between the empirical triggering curve and the interpreted test data. However, the influence of fines on cyclic resistance appears to be over-predicted by the empirical method, particularly for non-plastic silty sands that are commonly encountered in flood over-bank deposits in Christchurch and nearby settlements

Images, eqnz.chch.2010

Tell me... Why This is the path I'll never tread These are the dreams I'll dream instead This is the joy that's seldom spread These are the tears... The tears we shed This is the fear This is the dread These are the contents of my head And these are the years that we have spent And this is what they represent And this is how I feel Do you know h...

Images, eqnz.chch.2010

Sadly the Chapel has been badly damaged in the magnitude 6.3 earthquake that hit Christchurch 22 February 2011. See below. The Rose Historic Chapel formerly St Mary’s Convent Chapel is the sole survivor of a group of heritage buildings in Christchurch that once comprised the St Mary’s Convent complex for the Sisters of Mercy in North Colombo St...

Research papers, University of Canterbury Library

The Leader Fault was one of at least 17 faults that ruptured the ground surface across the northeastern South Island of New Zealand during the Mw 7.8 2016 Kaikōura Earthquake. The southern ~6 km of the Leader Fault, here referred to as the South Leader Fault (SLF), ruptured the North Canterbury (tectonic) Domain and is the primary focus of this study. The main objective of the thesis is to understand the key factors that contributed to the geometry and kinematics of the 2016 SLF rupture and its intersection with The Humps Fault (HF). This thesis employs a combination of techniques to achieve the primary objective, including detailed mapping of the bedrock geology, geomorphology and 2016 rupture, measurement of 2016 ground surface displacements, kinematic analysis of slip vectors from the earthquake, and logging of a single natural exposure across a 2016 rupture that was treated as a paleoseismic trench. The resulting datasets were collected in the field, from terrestrial LiDAR and InSAR imagery, and from historical (pre-earthquake) aerial photographs for a ~11 km2 study area. Surface ruptures in the study area are a miniature version of the entire rupture from the earthquake; they are geometrically and kinematically complex, with many individual and discontinuous segments of varying orientations and slip senses which are distributed across a zone up to ~3.5 km wide. Despite this variability, three main groups of ruptures have been identified. These are: 1) NE-SW striking, shallow to moderate dipping (25-45°W) faults that are approximately parallel to Cenozoic bedding with mainly reverse dip-slip and, and for the purposes of this thesis, are considered to be part of the SLF. 2) N-S striking, steeply dipping (~85°E) oblique sinistral faults that are up to the west and part of the SLF. 3) E-NE striking, moderate to steeply dipping (45-68°N) dextral reverse faults which are part of the HF. Bedding-parallel faults are interpreted to be flexural slip structures formed during folding of the near-surface Cenozoic strata, while the steeply dipping SLF ruptured a pre-existing bedrock fault which has little topographic expression. Groups 1 and 2 faults were both locally used for gravitational failure during the earthquake. Despite this non-tectonic fault movement, the slip vectors for faults that ruptured during the earthquake are broadly consistent with NCD tectonics and the regional ~100-120° trend of the principal horizontal stress/strain axes. Previous earthquake activity on the SLF is required by its displacement of Cenozoic formations but Late Quaternary slip on the fault prior to 2016 is neither supported by pre-existing fault scarps nor by changes in topography across the fault. By contrast, at least two earthquakes (including 2016) appear to have ruptured the HF from the mid Holocene, consistent with recurrence intervals of no more than ~7 kyr, and with preliminary observations from trenches on the fault farther to the west. The disparity in paleoearthquake records of the two faults suggests that they typically do not rupture together, thus it is concluded that the HF-SLF rupture pattern observed in the Kaikōura Earthquake rarely occurs in a single earthquake.

Audio, Radio New Zealand

PAUL GOLDSMITH to the Minister of Finance: What steps is the Government taking to support new jobs and build a productive and competitive economy? Rt Hon WINSTON PETERS to the Minister responsible for the GCSB: Specifically, have there been staff issues associated with the Government Communications Security Bureau and Dotcom affair brought to his attention by the Government Communications Security Bureau or members of the New Zealand Police, in which such staff members no longer work in their previous capacity for the Government Communications Security Bureau or any government agency; if so, what were the circumstances? DAVID SHEARER to the Prime Minister: Further to his answers to the first supplementary question to Oral Question No 1 on 26 September and the first supplementary question to Oral Question No 1 yesterday, does he now know on what date the Government Communications Security Bureau was first told that its surveillance of Kim Dotcom was illegal? ALFRED NGARO to the Minister for Social Development: What recent announcements has she made regarding providing extra financial assistance to grandparents raising grandchildren and other kin-carers? Hon DAVID PARKER to the Minister of Finance: When he said yesterday that with a "relatively high" exchange rate, our exporters "have been sufficiently resilient to be able to grow export volumes and value" did he mean that all export sectors have been growing, and according to Statistics New Zealand, in 2008 dollars what is the percentage change in exports of simply and elaborately transformed manufactured goods from the 2008 to 2012 financial years? METIRIA TUREI to the Prime Minister: Does he stand by his statement, in response to a question about whether he will support my Income Tax (Universalisation of In-work Tax Credit) Amendment Bill that "she wants to give the same millionaires yet more money to raise their kids"? SHANE ARDERN to the Minister for Primary Industries: What progress can he report on the Primary Growth Partnership Initiative? JACINDA ARDERN to the Minister for Social Development: What vulnerabilities were identified in the report prepared by Dimension Data on the security of the Work and Income kiosks? Dr JACKIE BLUE to the Minister of Health: What reports has he received on improving the quality and efficiency of health services? TE URUROA FLAVELL to the Minister of Broadcasting: How does he ensure that the legislative requirement for TVNZ to provide high-quality content that reflects Māori perspectives is reflected in the programming strategy for TV1 and TV2? CHRIS HIPKINS to the Minister of Education: Is she confident that the information she relied upon in deciding on proposals for school closures and mergers in Christchurch was robust and reliable; if so, why? CHRIS AUCHINVOLE to the Minister for Canterbury Earthquake Recovery: What reports has he received on the availability of insurance cover to support the rebuilding of Canterbury following the seismic events?

Audio, Radio New Zealand

The Christchurch earthquake was obviously a huge story this year, and for one couple it will always be particularly memorable. Christchurch lawyer Katherine Ewer and her husband David got married that day.