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Research papers, University of Canterbury Library

In the period between September 2010 and December 2011, Christchurch was shaken by a series of strong earthquakes including the MW7.1 4 September 2010, Mw 6.2 22 February 2011, MW6.2 13 June 2011 and MW6.0 23 December 2011 earthquakes. These earthquakes produced very strong ground motions throughout the city and surrounding areas that resulted in soil liquefaction and lateral spreading causing substantial damage to buildings, infrastructure and the community. The stopbank network along the Kaiapoi and Avon River suffered extensive damage with repairs projected to take several years to complete. This presented an opportunity to undertake a case-study on a regional scale of the effects of liquefaction on a stopbank system. Ultimately, this information can be used to determine simple performance-based concepts that can be applied in practice to improve the resilience of river protection works. The research presented in this thesis draws from data collected following the 4th September 2010 and 22nd February 2011 earthquakes. The stopbank damage is categorised into seven key deformation modes that were interpreted from aerial photographs, consultant reports, damage photographs and site visits. Each deformation mode provides an assessment of the observed mechanism of failure behind liquefaction-induced stopbank damage and the factors that influence a particular style of deformation. The deformation modes have been used to create a severity classification for the whole stopbank system, being ‘no or low damage’ and ‘major or severe damage’, in order to discriminate the indicators and factors that contribute to ‘major to severe damage’ from the factors that contribute to all levels of damage a number of calculated, land damage, stopbank damage and geomorphological parameters were analysed and compared at 178 locations along the Kaiapoi and Avon River stopbank systems. A critical liquefiable layer was present at every location with relatively consistent geotechnical parameters (cone resistance (qc), soil behaviour type (Ic) and Factor of Safety (FoS)) across the study site. In 95% of the cases the critical layer occurred within two times the Height of the Free Face (HFF,). A statistical analysis of the geotechnical factors relating to the critical layer was undertaken in order to find correlations between specific deformation modes and geotechnical factors. It was found that each individual deformation mode involves a complex interplay of factors that are difficult to represent through correlative analysis. There was, however, sufficient data to derive the key factors that have affected the severity of deformation. It was concluded that stopbank damage is directly related to the presence of liquefaction in the ground materials beneath the stopbanks, but is not critical in determining the type or severity of damage, instead it is merely the triggering mechanism. Once liquefaction is triggered it is the gravity-induced deformation that causes the damage rather than the shaking duration. Lateral spreading and specifically the depositional setting was found to be the key aspect in determining the severity and type of deformation along the stopbank system. The presence or absence of abandoned or old river channels and point bar deposits was found to significantly influence the severity and type of deformation. A review of digital elevation models and old maps along the Kaiapoi River found that all of the ‘major to severe’ damage observed occurred within or directly adjacent to an abandoned river channel. Whilst a review of the geomorphology along the Avon River showed that every location within a point bar deposit suffered some form of damage, due to the depositional environment creating a deposit highly susceptible to liquefaction.

Videos, UC QuakeStudies

A video of a tour of the Christchurch central city Red Zone. The video includes footage of the Design and Arts College Building, the Heritage Hotel, Cathedral Junction, the Octagon Live restaurant, Manchester Street, Hereford Street, Bedford Row, High Street, Lichfield Street, the Majestic Theatre, Colombo Street, Cashel Street, Just Jeans and Starbucks on Cashel Street, and Kilmore Street. It also includes footage of residents on a Red Zone bus tour.

Research papers, University of Canterbury Library

In this paper, the characteristics of near-fault ground motions recorded during the Mw7.1 Darfield and Mw 6.2 Christchurch earthquakes are examined and compared with existing empirical models. The characteristics of forward-directivity effects are first examined using a wavelet-based pulse-classification algorithm. This is followed by an assessment of the adequacy of empirical models which aim to capture the effect of directivity effects on amplifying the acceleration response spectra; and the period and peak velocity of the forward-directivity pulse. It is illustrated that broadband directivity models developed by Somerville et al. (1997) and Abrahamson (2000) generally under-predict the observed amplification of response spectral ordinates at longer vibration periods. In contrast, a recently developed narrowband model by Shahi and Baker (2011) provides significantly improved predictions by amplifying the response spectra within a small range of periods surrounding the directivity pulse period. Although the empirical predictions of the pulse period are generally favourable for the Christchurch earthquake, the observations from the Darfield earthquake are significantly under-predicted. The elongation in observed pulse periods is inferred as being a result of the soft sedimentary soils of the Canterbury basin. However, empirical predictions of the observed peak velocity associated with the directivity pulse are generally adequate for both events.

Images, UC QuakeStudies

An aerial photograph of Manchester Street near Cambridge Terrace. The photograph has been captioned by BeckerFraserPhotos, "The new Christchurch emerges - more colourful than before. The tree wrapped in high visibility is another project from artist Peter Majendie. The newly planted grass on the right hand side of the photo is on the PGC site and an adjoining site and is a CERA initiative. In the foreground of the photos the former site of St Luke's is now attractively laid out, while the splendour of the trees on the site can be fully appreciated".

Videos, UC QuakeStudies

A video of an interview with artefact analyst Gwen Jackson, about the artefacts found at the site of the Theatre Royal. Hundreds of artefacts were found under the Isaac Theatre Royal, including bottles and ceramic shards. This was part of a greater project by archaeologists to examine pre-1900 sites in the Christchurch central city before work is conducted on them. Archaeological assessment of pre-1900 buildings is required by the 1993 Historic Places Act before work can be done on the site.

Images, UC QuakeStudies

Two cardboard coffee cups in a takeaway tray sit on a wooden counter. The photographer comments, "What is the story of these coffees and that sad muffin? Were these an order when the earthquake struck Christchurch on 22 February 2011? Were these a workman's and a colleague's having a quick coffee break when a later aftershock caused them to leave everything behind when they fled the red zoned building, or were they just forgotten when the building was cleared out and abandoned?".

Audio, Radio New Zealand

Back in 2011, a slightly rusty three speed bike abandoned after the September earthquake on a demolition site in Christchurch caught the attention of John Smithies. He's 72, only slightly older than the bike, and he decided it would be just the bicycle to take on a epic, 2000 kilometre journey from Cape Reinga to Bluff. He started in September and expects to reach Bluff on Friday. He's making the epic journey in memory of his wife, Alison who died two years ago of a form of non-Hodgkin lymphoma. The ride down State Highway One is raising money for leukemia and blood cancer.

Videos, UC QuakeStudies

A video of the Christchurch City Council meeting to discuss its consenting process. The meeting was called after the council received a letter from International Accreditation New Zealand (IANZ) on 30 May 2013. The letter states that the Council has until 28 June 2013 to improve its processes or it will be stripped of its accreditation as a building consent authority. The video includes discussion from Councillor Barry Corbett, Acting Building Operations Manager Steve McCarthy, Democracy Services General Manager Peter Mitchell, Councillor Aaron Keown, and Councillor Claudia Reid.

Research papers, University of Canterbury Library

The Canterbury earthquakes caused huge amounts of damage to Christchurch and the surrounding area and presented a very challenging situation for both insurers and claimants. While tourism has suffered significant losses as a result, particularly due to the subsequent decrease in visitor numbers, the Canterbury region was very fortunate to have high levels of insurance coverage. This report, based on data gathered from tourism operators on the ground in Canterbury, looks at how this sector has been affected by the quakes, claims patterns, and the behaviour and perceptions of tourism operators about insurance.

Research papers, University of Canterbury Library

This study sought to investigate employee burnout within a post-disaster context by exploring teachers’ burnout perceptions and workplace attitudes in the aftermath of the 2010-2011 Christchurch earthquakes. The study hypothesised that burnout dimensions (emotional exhaustion and cynicism) would be related with the extent to which individuals and schools were impacted by the earthquakes, and with the quality of school support for staff and students (i.e., personal disaster impact, school disaster impact and school responsiveness to the disaster), with perceptions of role conflict and role overload, and with turnover intentions. Additionally, a Teacher Burnout Model was proposed whereby emotional exhaustion and cynicism were hypothesised to mediate the relationships between the independent variables (i.e., the disaster-related and role-related variables) and turnover intentions. 125 primary, intermediate and secondary school teachers from the city of Christchurch completed an online survey. Results revealed that high role overload, high role conflict, high school disaster impact, and schools’ ineffective disaster coping responses, were associated with increased levels of emotional exhaustion and cynicism. Although greater impact of earthquakes on teachers’ personal lives was related to higher levels of emotional exhaustion, results revealed a non-significant relationship between personal disaster impact and cynicism. In the Teacher Burnout Model, the relationships between both role stress variables and turnover intentions were mediated by perceptions of emotional exhaustion. This study contributes novel findings to the burnout literature, and provides implications for schools and organisations operating within a disaster context.

Research papers, University of Canterbury Library

Christchurch earthquake events have raised questions on the adequacy of performance-based provisions in the current national building code. At present, in the building code the performance objectives are expressed in terms of safety and health criteria that could affect building occupants. In general, under the high intensity Christchurch events, buildings performed well in terms of life-safety (with a few exceptions) and it proved that the design practices adopted for those buildings could meet the performance objectives set by the building code. However, the damage incurred in those buildings resulted in unacceptably high economic loss. It is timely and necessary to revisit the objectives towards building performance in the building code and to include provisions for reducing economic implications in addition to the current requirements. Based on the observed performance of some buildings, a few specific issues in the current design practices that could have contributed to extensive damage have been identified and recommended for further research leading towards improved performance of structures. In particular, efforts towards innovative design/construction solutions with low-damage concepts are encouraged. New Zealand has been one of the leading countries in developing many innovative technologies. However, such technically advanced research findings usually face challenges towards implementation. Some of the reasons include: (i) lack of policy requirements; (iii) absence of demonstrated performance of new innovations to convince stakeholders; and (iv) non-existence of design guidelines. Such barriers significantly affect implementation of low damage construction and possible strategies to overcome those issues are discussed in this paper.

Audio, Radio New Zealand

UAVs or Unmanned Aerial Vehicles, or drones as they’re commonly known, are suddenly everywhere. Conservationists and academics are using them to map our rivers; engineers surveyed the interior of the earthquake damaged Christchurch Cathedral with one; and then, of course, there's the military drones used to such lethal affect in Pakistan and Yemen. Ideas visits Palmerston North's Skycam UAV – New Zealand's leading manufacture of UAVs; talks to the interim president of the Association of Unmanned Operations – a union of US drone pilots; and Professor James Cavallaro tells us about the findings of a report he co-authored: 'Living Under Drones: Death, Injury, and Trauma to Civilians from US Drone Practices in Pakistan'.

Audio, Radio New Zealand

Topics - The Gettysburg address, the short speech given by Abraham Lincoln 150 years ago today, the finest short speech in the English language, and one of the great political utterances of all time. A strong earthquake that hit Christchurch last night has been upgraded by GNS Science to a magnitude 4.6. It was also shallower than first believed, with GNS reporting it was 8km deep rather than 11km. Wallabies rugby coach Ewen McKenzie has made no apologies for suspending six of his players in what's been described as "a hard-line move designed to set the standards required to win the 2015 World Cup".

Videos, UC QuakeStudies

A video about businesses in the Christchurch central city Red Zone. The Red Zone has now been renamed the Rebuild Zone. The video shows businesses which have remained untouched since the 22 February 2011 earthquake, including the Camelot Hotel and the i-SITE visitor centre in Cathedral Square, Subway on High Street, Jeans West on High Street, Time Zone on Colombo Street, Comics Compulsion on Manchester Street, Mortgage Solutions mortgage brokers on the corner of Hereford and Manchester Streets, Pocha Bar and Restaurant off Lichfield Street, and a fabric store on Lichfield Street.

Audio, Radio New Zealand

Topics - Official statistics released today show New Zealand's population has increased by 214,000 people in the seven years since the last census. The census, usually held every five years, was delayed in 2011 due to the Christchurch earthquakes. In what has been described as a "stealthy assault" in Somalia - and also in a raid in Libya's capital - US special forces have struck out against Islamic extremists who carried out terrorist attacks in East Africa. The commandos snatched a Libyan al-Qaida leader allegedly involved in the bombings of US embassies 15 years ago - but aborted a mission to capture a terrorist suspect linked to last month's Nairobi shopping mall attack after a fierce firefight.

Research papers, University of Canterbury Library

Based on a qualitative study of four organisations involving 47 respondents following the extensive 2010 – 2011 earthquakes in Christchurch, New Zealand, this paper presents some guidance for human resource practitioners dealing with post-disaster recovery. A key issue is the need for the human resource function to reframe its practices in a post-disaster context, developing a specific focus on understanding and addressing changing employee needs, and monitoring the leadership behaviour of supervisors. This article highlights the importance of flexible organisational responses based around a set of key principles concerning communication and employee perceptions of company support.

Images, eqnz.chch.2010

This is the Summit Road below Mt Cavendish and shows a few remaining high buildings in the central city beyond (in setting sun). Just above centre is the doomed AMI Stadium (1) aka Lancaster Park, home to Canterbury cricket and rugby till the erathquakes.

Audio, Radio New Zealand

Dr RUSSEL NORMAN to the Prime Minister: Does he have confidence in all his Ministers? DAVID SHEARER to the Prime Minister: Does he stand by all his statements? MAGGIE BARRY to the Minister of Finance: What measures is the Government taking to help increase national savings? Rt Hon WINSTON PETERS to the Minister for Canterbury Earthquake Recovery: What reports has he received about the extent of fraud allegations in the Christchurch rebuild? Hon ANNETTE KING to the Minister of Health: Is he confident that the Government's initiative to provide "Better, Sooner, More Convenient" health care, is meeting his expectations; if not, why not? MARK MITCHELL to the Minister for Economic Development: What progress is being made in encouraging firms to invest in New Zealand through the Business Growth Agenda? PHIL TWYFORD to the Prime Minister: Does he stand by all his statements? DAVID BENNETT to the Associate Minister of Transport: What recent announcements has he made on transport safety? Hon LIANNE DALZIEL to the Minister for Canterbury Earthquake Recovery: Will he extend the deadline for residential red zone property owners who have been offered only 50 percent of rating valuation for their land? SCOTT SIMPSON to the Minister of Justice: What recent report has she received showing that crime is falling under this Government? METIRIA TUREI to the Minister of Education: Will she wait until the Chief Ombudsman's investigation of the Ministry of Education's processes on school closures is complete before making a final decision on the Salisbury and Christchurch school closures? GRANT ROBERTSON to the Minister responsible for the GCSB: Did GCSB Director Ian Fletcher attend the three briefings he received from GCSB in February 2012; if not, which, if any, of the briefings did Ian Fletcher attend?

Research papers, Victoria University of Wellington

The Mѡ=7.1 Darfield (Canterbury) earthquake struck on 4 September 2010, approximately 45 km west of Christchurch, New Zealand. It revealed a previously unknown fault (the Greendale fault) and caused billions of dollars of damage due to high peak ground velocities and extensive liquefaction. It also triggered the Mw=6.3 Christchurch earthquake on 22 February 2011, which caused further damage and the loss of 185 lives. The objective of this research was to determine the relationship between stress and seismic properties in a seismically active region using manually-picked P and S wave arrival times from the aftershock sequence between 8 September 2010-13 January 2011 to estimate shear-wave splitting (SWS) parameters, VP =VS-ratios, anisotropy (delay-time tomography), focal mechanisms, and tectonic stress on the Canterbury plains. The maximum horizontal stress direction was highly consistent in the plains, with an average value of SHmax=116 18 . However, the estimates showed variation in SHmax near the fault, with one estimate rotating by as much as 30° counter-clockwise. This suggests heterogeneity of stress at the fault, though the cause remains unclear. Orientations of the principal stresses predominantly indicate a strike-slip regime, but there are possible thrust regimes to the west and north/east of the fault. The SWS fast directions (ø) on the plains show alignment with SHmax at the majority of stations, indicating stress controlled anisotropy. However, structural effects appear more dominant in the neighbouring regions of the Southern Alps and Banks Peninsula.

Audio, Radio New Zealand

A selection of the week's news including a former New Zealand cricketer demanding answers over how his name has been linked an investigation into match-fixing, the Act Party leader announces he is quitting as party leader and will leave parliament next year, the biggest drug haul in New Zealand history, the Auditor General apologises to Mangawhai locals for Audit New Zealand's failure to identify a 60 million-plus waste-water debacle, the Labour Party says its victory in the Christchurch East by-election is an indictment of the Government's response to the earthquakes, we hear from the author of a book about the building blocks of our words and literature and the national champion who will proudly represent New Zealand at an international competition in Perth.

Research papers, University of Canterbury Library

Disasters are rare events with major consequences; yet comparatively little is known about managing employee needs in disaster situations. Based on case studies of four organisations following the devastating earthquakes of 2010 - 2011 in Christchurch, New Zealand, this paper presents a framework using redefined notions of employee needs and expectations, and charting the ways in which these influence organisational recovery and performance. Analysis of in-depth interview data from 47 respondents in four organisations highlighted the evolving nature of employee needs and the crucial role of middle management leadership in mitigating the effects of disasters. The findings have counterintuitive implications for human resource functions in a disaster, suggesting that organisational justice forms a central framework for managing organisational responses to support and engage employees for promoting business recovery.

Research papers, University of Canterbury Library

Cultural heritage is a dynamic concept, incorporating the ideas and values of many different organisations and individuals; it is heavily dependent on the context of the item or site being conserved, and transforms something from an old article into a historically significant object. A formal definition of cultural heritage did not appear in the Antarctic Treaty System until 1995, however Antarctic heritage value has been applied to various sites and monuments since the inception of the Treaty, from Shackleton’s Nimrod Hut to a heavy tractor. This report examines a number of case studies to determine the various ways in which heritage items and sites can be managed – such as the removal of the South Pole Dome – as well as their conservation after natural disasters, for instance the Christchurch earthquakes.

Images, eqnz.chch.2010

Nearly 80 40 foot containers (most two high) protect Wakefield Avenue in Sumner from further rock falls. Behind these (to the left) are houses, church, bowling club, RSA (Returned Servicemens Association) and other community buildings that have been isolated now for nearly two years now. On the right upper third boundary (just behind two stand a...