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Images for canterbury earthquakes; more images...

Images, eqnz.chch.2010

www.youtube.com/watch?v=SPXqb7k4azU Details inside a half demolished theatre in central Christchurch. November, 2012. Christchurch, NZ. (c)Mike Brebner. All rights reserved.

Images, UC QuakeStudies

Labour Party leader Phil Goff speaking to members of the Student Volunteer Army in the UCSA car park outside the UCSA's "Big Top" tent. The tent was erected to provide support for students at the University of Canterbury in the aftermath of the 22 February 2011 earthquake.

Articles, UC QuakeStudies

An article from the Media Studies Journal of Aotearoa New Zealand Volume 14, Number 1. The article is titled, "Against the Odds: community access radio broadcasting during the Canterbury earthquakes, some reflections on Plains FM 96.9". It was written by Brian Pauling and Nicki Reece.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. (L-R) Selwyn District mayor Kelvin Coe, Christchurch city councillor Bob Shearing, Lady Susan and Governor-General Anand Satyanand visit badly affected Halswell Primary School".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. (L-R) Selwyn District mayor Kelvin Coe, Christchurch city councillor Bob Shearing, Lady Susan and Governor-General Anand Satyanand visit badly affected Halswell Primary School".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. (L-R) Selwyn District mayor Kelvin Coe, Christchurch city councillor Bob Shearing, Lady Susan and Governor-General Anand Satyanand visit badly affected Halswell Primary School".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. (L-R) Selwyn District mayor Kelvin Coe, Christchurch city councillor Bob Shearing, Lady Susan and Governor-General Anand Satyanand visit badly affected Halswell Primary School".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. (L-R) Selwyn District mayor Kelvin Coe, Christchurch city councillor Bob Shearing, Lady Susan and Governor-General Anand Satyanand visit badly affected Halswell Primary School".

Research papers, University of Canterbury Library

Natural catastrophes are increasing worldwide. They are becoming more frequent but also more severe and impactful on our built environment leading to extensive damage and losses. Earthquake events account for the smallest part of natural events; nevertheless seismic damage led to the most fatalities and significant losses over the period 1981-2016 (Munich Re). Damage prediction is helpful for emergency management and the development of earthquake risk mitigation projects. Recent design efforts focused on the application of performance-based design engineering where damage estimation methodologies use fragility and vulnerability functions. However, the approach does not explicitly specify the essential criteria leading to economic losses. There is thus a need for an improved methodology that finds the critical building elements related to significant losses. The here presented methodology uses data science techniques to identify key building features that contribute to the bulk of losses. It uses empirical data collected on site during earthquake reconnaissance mission to train a machine learning model that can further be used for the estimation of building damage post-earthquake. The first model is developed for Christchurch. Empirical building damage data from the 2010-2011 earthquake events is analysed to find the building features that contributed the most to damage. Once processed, the data is used to train a machine-learning model that can be applied to estimate losses in future earthquake events.

Articles, UC QuakeStudies

A digital photograph in PDF format with caption. Image from the inside of a Red Zoned home in the Horseshoe Lake area. Image depicts the dining area where a poem had been written on the walls by a member of the family. Poem talks about the earthquake, living in Horseshoe Lake, and being Red Zoned and what that means.

Images, UC QuakeStudies

People peer through the cordon fence outside Ballantynes. The photographer comments, "Whilst on the CERA red zone coach tour we passed Ballantynes and felt like caged animals. There was crowds watching us and we were caged inside the CERA coach with our keepers to make sure we were not allowed to escape our confines".

Research papers, University of Canterbury Library

Previous earthquakes demonstrated destructive effects of soil-structure interaction on structural response. For example, in the 1970 Gediz earthquake in Turkey, part of a factory was demolished in a town 135 km from the epicentre, while no other buildings in the town were damaged. Subsequent investigations revealed that the fundamental period of vibration of the factory was approximately equal to that of the underlying soil. This alignment provided a resonance effect and led to collapse of the structure. Another dramatic example took place in Adapazari, during the 1999 Kocaeli earthquake where several foundations failed due to either bearing capacity exceedance or foundation uplifting, consequently, damaging the structure. Finally, the Christchurch 2012 earthquakes have shown that significant nonlinear action in the soil and soil-foundation interface can be expected due to high levels of seismic excitation and spectral acceleration. This nonlinearity, in turn, significantly influenced the response of the structure interacting with the soil-foundation underneath. Extensive research over more than 35 years has focused on the subject of seismic soil-structure interaction. However, since the response of soil-structure systems to seismic forces is extremely complex, burdened by uncertainties in system parameters and variability in ground motions, the role of soil-structure interaction on the structural response is still controversial. Conventional design procedures suggest that soil-structure interaction effects on the structural response can be conservatively ignored. However, more recent studies show that soil-structure interaction can be either beneficial or detrimental, depending on the soil-structure-earthquake scenarios considered. In view of the above mentioned issues, this research aims to utilise a comprehensive and systematic probabilistic methodology, as the most rational way, to quantify the effects of soil-structure interaction on the structural response considering both aleatory and epistemic uncertainties. The goal is achieved by examining the response of established rheological single-degree-of-freedom systems located on shallow-foundation and excited by ground motions with different spectral characteristics. In this regard, four main phases are followed. First, the effects of seismic soil-structure interaction on the response of structures with linear behaviour are investigated using a robust stochastic approach. Herein, the soil-foundation interface is modelled by an equivalent linear cone model. This phase is mainly considered to examine the influence of soil-structure interaction on the approach that has been adopted in the building codes for developing design spectrum and defining the seismic forces acting on the structure. Second, the effects of structural nonlinearity on the role of soil-structure interaction in modifying seismic structural response are studied. The same stochastic approach as phase 1 is followed, while three different types of structural force-deflection behaviour are examined. Third, a systematic fashion is carried out to look for any possible correlation between soil, structural, and system parameters and the degree of soil-structure interaction effects on the structural response. An attempt is made to identify the key parameters whose variation significantly affects the structural response. In addition, it is tried to define the critical range of variation of parameters of consequent. Finally, the impact of soil-foundation interface nonlinearity on the soil-structure interaction analysis is examined. In this regard, a newly developed macro-element covering both material and geometrical soil-foundation interface nonlinearity is implemented in a finite-element program Raumoko 3D. This model is then used in an extensive probabilistic simulation to compare the effects of linear and nonlinear soil-structure interaction on the structural response. This research is concluded by reviewing the current design guidelines incorporating soil-structure interaction effects in their design procedures. A discussion is then followed on the inadequacies of current procedures based on the outcomes of this study.

Images, Alexander Turnbull Library

Cartoon drawn in the style of a pen and ink drawing of the broken Christchurch Cathedral. One version has 'RIP' printed above the non-existant spire and the second has 'RIP' and the words 'Rest in Pieces'. A decision has been made to demolish the cathedral which was severely damaged by the earthquakes of 2010 and 2011. Two versions of this cartoon are available Title from file name Quantity: 2 digital cartoon(s).

Research Papers, Lincoln University

In the wake of a series of devastating earthquakes, Christchurch, New Zealand is faced with a long, complicated mourning and memorialisation process. The initial intention of this research was to comparatively examine memorial design theory with popular memorial sentiment as expressed in Christchurch City Council's 'Share an Idea' initiative. The outcome of such an investigation was hypothesized to reveal conflicting perspectives which may potentially be reconciled by the development of a series of schematic models for memorial design. As the research was carried out, it became clear that any attempt to develop such models is counter-intuitive. This position is reinforced by the literature reviewed and the data examined. Subsequently, a fundamentally different approach to memorialisation focused on an active participation process is suggested.

Images, UC QuakeStudies

Jess Hollis, a member of the University of Canterbury's E-Learning team in their 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 with Jess behind".

Images, UC QuakeStudies

Jess Hollis, a member of the University of Canterbury's E-Learning team in their 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. Jess, with my desk behind".

Images, UC QuakeStudies

An image from a Army News March 2011 article titled, "An Army Being Led to Win". The image shows Defence Force personnel during an operational tour of Lyttelton taken by Commander Joint Forces, Air Marshal Peter Stockwell and Chief of Army Tim Keating to view the aftermath of the Christchurch Earthquake. In the background, the HMNZS Canterbury can be seen.