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Images for seats; more images...

Images, UC QuakeStudies

A digitally manipulated image of two chairs sitting among rubble. The photographer comments, "There is a strip of land that has been declared as the red zone. This means that the houses facing towards the tidal estuary must be abandoned as they are on land that has been declared uneconomic to repair after the Christchurch earthquakes. These chairs are at the front of one of these properties that will be bulldozed. These seem to be saying come hell or high water we will not be moved".

Audio, Radio New Zealand

Work has finally begun dismantling Lancaster Park in Christchurch, six years after it was damaged beyond repair in the February earthquake. It comes at the same time the city's leaders debate what a new stadium could look like and who will pay.

Images, UC QuakeStudies

Damaged seating in the QEII stadium. The photographer comments, "This is the QEII stadium in Christchurch. During the 22 February earthquake the stadium was severely damaged and looks like it will be demolished. Anyone in Bay 3 would have no need of the toilet after this happened".

Research papers, University of Canterbury Library

Rock mass defect controlled deep-seated landslides are widespread within the deeply incised landscapes formed in Tertiary soft rock terrain in New Zealand. The basal failure surfaces of deep-seated slope failures are defined by thin, comparatively weak and laterally continuous bedding parallel layers termed critical stratigraphic horizons. These horizons have a sedimentary origin and have typically experienced some prior tectonically induced shear displacement at the time of slope failure. The key controls on the occurrence and form of deep-seated landslides are considered in terms of rock mass defect properties and tectonic and climatic forcing. The selection of two representative catchments (in southern Hawke's Bay and North Canterbury) affected by tectonic and climatic forcing has shown that the spatial and temporal initiation of deep-seated bedrock landslides in New Zealand Tertiary soft rock terrain is a predictable rather than a stochastic process; and that deep-seated landslides as a mass wasting process have a controlling role in landscape evolution in many catchments formed in Tertiary soft rock terrain. The Ella Landslide in North Canterbury is a deep-seated (~85 m) translational block slide that has failed on a 5 - 10 mm thick, kaolinite-rich, pre-sheared critical stratigraphic horizon. The residual strength of this sedimentary horizon, (C'R 2.6 - 2.7 kPa, and Ѳ'R = 16 - 21°), compared to the peak strength of the dominant lithology (C' = 176 kPa, and Ѳ' = 37°) defines a high strength contrast in the succession, and therefore a critical location for the basal failure surface of deep-seated slope failures. The (early to mid Holocene) Ella Landslide debris formed a large landslide dam in the Kate Stream catchment and this has significantly retarded rates of mass wasting in the middle catchment. Numerical stability analysis shows that this slope failure would have most likely required the influence of earthquake induced strong ground motion and the event is tentatively correlated to a Holocene event on the Omihi Fault. The influence of this slope failure is likely to affect the geomorphic development of the catchment on a scale of 10⁴ - 10⁵ years. In deeply incised catchments at the southeastern margin of the Maraetotara Plateau, southern Hawke's Bay, numerous widespread deep-seated landslides have basal failure surfaces defined by critical stratigraphic horizons in the form of thin « 20 mm) tuffaceous beds in the Makara Formation flysch (alternating sandstone and mudstone units). The geometry of deep-seated slope failures is controlled by these regularly spaced (~70 m), very weak critical stratigraphic horizons (C'R 3.8 - 14.2 kPa, and Ѳ'R = 2 - 5°), and regularly spaced (~45 m) and steeply dipping (-50°) critical conjugate joint/fault sets, which act as slide block release surfaces. Numerical stability analysis and historical precedent show that the temporal initiation of deep-seated landslides is directly controlled by short term tectonic forcing in the form of periodic large magnitude earthquakes. Published seismic hazard data shows the recurrence interval of earthquakes producing strong ground motions of 0.35g at the study site is every 150 yrs, however, if subduction thrust events are considered the level of strong ground motion may be much higher. Multiple occurrences of deep-seated slope failure are correlated to failure on the same critical stratigraphic horizon, in some cases in three adjacent catchments. Failure on multiple critical stratigraphic horizons leads to the development of a "stepped" landscape morphology. This slope form will be maintained during successive accelerated stream incision events (controlled by long term tectonic and climatic forcing) for as long as catchments are developing in this specific succession. Rock mass defect controlled deep seated landslides are controlling catchment head progression, landscape evolution and hillslope morphology in the Hawke's Bay study area and this has significant implications for the development of numerical landscape evolution models of landscapes formed in similar strata. Whereas the only known numerical model to consider deep seated landslides as an erosion process (ZSCAPE) considers them as stochastic in time and space, this study shows that this could not be applied to a landscape where the widespread spatial occurrence of deep-seated landslides is controlled by rock mass defects. In both of the study areas for this project, and by implication in many catchments in Tertiary soft rock terrain, deep-seated landslides controlled by rock mass defect strength, spacing and orientation, and tectonic and climatic forcing have an underlying control on landscape evolution. This study quantifies parameters for the development of numerical landscape evolution models that would assess the role of specific parameters, such as uplift rates, incision rates and earthquake recurrence in catchment evolution in Tertiary soft rock terrain.

Audio, Radio New Zealand

The Week In Review for week ending 12 August 2011... featuring a new rebuild plan for Christchurch's earthquake ravaged CBD, problems at the Waikato-Tainui Tribal Parliament, a pricing fiasco surrounding the Adidas All Blacks Rugby World Cup jersey, the Mana party confirms it will contest all seven Maori seats and some general seats in November's general election, the renaming of Mt Cook's South Ridge to The Hillary Ridge and the White Mouse passes away.

Audio, Radio New Zealand

The old Ngaio Marsh theatre at the University of Canterbury was one of the many casualties of the earthquakes.The Student Association is encouraging people who performed on stage or helped out behind the scenes to buy a seat for the replacement Ngaio Marsh Theatre. Lynn Freeman talks with the UCSA president Sam Brosnahan about the project.

Audio, Radio New Zealand

Christchurch MPs - Labour's Lianne Dalziel and National's Amy Adams - say it's not fair for seat-of-the-pants post-quake red/yellow and green sticker assessments to be formally recorded forever. They say the assessments were hastily done and inconsistent. But the Christchurch City Council says its required to do so under the provisions of the Canterbury Earthquake Response and Recovery Act.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Bunny babes: In a magical Avon Loop property a bunny stranger appeared after the September earthquake, and then there were heaps more. At back, on the garden seat from left: Grace Stedman (5), Lili Belton-Ilarri (7), Sophia Stedman (12) and Asher Scully (5). On the ground from left: Inaki Belton, Arlo Stedman and Lilli Scully".

Images, UC QuakeStudies

A scanned copy of a black and white photograph depicting a crowd of seated students at the University of Canterbury. The students are dressed in black in protest at the lack of government funding for education. In the foreground is the page of a newspaper dated 22 June 1988, on which an article about the protest is written.

Images, eqnz.chch.2010

Some of the recent aftershocks located around Banks Peninsula since the 7.1 earthquake have resulted in renewed hot springs activity with the distinct sulphurous smells being the result of deep seated water reaching the surface. Known hot springs are located at Motukarara, Rapaki Bay, Heathcote Valley, and Purau. You can see the distant crater r...

Images, eqnz.chch.2010

Some of the recent aftershocks located around Banks Peninsula since the 7.1 earthquake have resulted in renewed hot springs activity with the distinct sulphurous smells being the result of deep seated water reaching the surface. Known hot springs are located at Motukarara, Rapaki Bay, Heathcote Valley, and Purau. You can see here a small man-ma...

Audio, Radio New Zealand

A 22-year-old self-employed dairy farmer hopes his success through winning a new Maori farming award will inspire other young troubled Maori to follow their dreams; The Chairperson of Nelson's first Maori language immersion school says there's been a shift in attitude among members of the public - who now understand the school won't be exclusive; The former National MP Sandra Goudie is calling for Waikato ratepayers to oppose two Maori seats that the Regional Council is introducing at next year's election; Liquefaction from the Christchurch earthquakes may have unearthed four taonga on the banks of the Heathcote river.

Audio, Radio New Zealand

The former National MP Sandra Goudie is calling for Waikato ratepayers to oppose two Maori seats that the Regional Council is introducing at next year's election; The Chairperson of Nelson's first Maori language immersion school says there's been a shift in attitude among members of the public - who now understand the school won't be exclusive; A 22-year-old self-employed dairy farmer hopes his success through winning a new Maori farming award will inspire other young troubled Maori to follow their dreams; Liquefaction from the Christchurch earthquakes may have unearthed four taonga on the banks of the Heathcote river.

Audio, Radio New Zealand

The David and Goliath battle over a heritage building sitting in the way of a planned $473 million dollar, multi-use arena for Christchurch has ended up in court. The 25,000-seated, roofed arena is the final anchor project for the Christchurch rebuild and will be designed to host everything from All Blacks tests to big concerts. But sitting on the edge of the site, at 212 Madras Street, is the NG Building, a 115-year old warehouse that's home to a number of creative businesses. It escaped the worst of the 2011 earthquake and was strengthened by its owners: Roland Logan and Sharon Ng. They say they were told in 2013 the building could be incorporated into the arena's design, and are at loggerheads over its compulsory acquisition. Last week they were at the High Court seeking an injunction that would allow them to temporarily maintain ownership of the building, and that decision was released yesterday - and upheld. Roland joins Kathryn to discuss why they hope the building can be saved.

Images, Alexander Turnbull Library

Text reads 'If a secret microphone was smuggled into CERA's meetings?...' A group of CERA staff chat during tea at a meeting. They make unguarded comments about the state of affairs in earthquake-stricken Christchurch unaware that a microphone has been left in a sugarbowl. Context: the cartoon suggests that there seems to many Christchurch people to be a lack of real care on the part of officialdom as they struggle to recover from the earthquake damage. The microphone recalls that left 'accidentally' on a table at which Prime Minister John Key and the ACT candidate for the Epsom seat were having a highly publicised cup of tea. Then when it was discovered that a microphone had recorded their conversation John Key tried to get a court order to supress making it public. Quantity: 1 digital cartoon(s).

Research papers, University of Canterbury Library

Surface rupture of the previously unrecognised Greendale Fault extended west-east for ~30 km across alluvial plains west of Christchurch, New Zealand, during the Mw 7.1 Darfield (Canterbury) earthquake of September 2010. Surface rupture displacement was predominantly dextral strike-slip, averaging ~2.5 m, with maxima of ~5 m. Vertical displacement was generally less than 0.75 m. The surface rupture deformation zone ranged in width from ~30 to 300 m, and comprised discrete shears, localised bulges and, primarily, horizontal dextral flexure. About a dozen buildings, mainly single-storey houses and farm sheds, were affected by surface rupture, but none collapsed, largely because most of the buildings were relatively flexible and resilient timber-framed structures and also because deformation was distributed over a relatively wide zone. There were, however, notable differences in the respective performances of the buildings. Houses with only lightly-reinforced concrete slab foundations suffered moderate to severe structural and non-structural damage. Three other buildings performed more favourably: one had a robust concrete slab foundation, another had a shallow-seated pile foundation that isolated ground deformation from the superstructure, and the third had a structural system that enabled the house to tilt and rotate as a rigid body. Roads, power lines, underground pipes, and fences were also deformed by surface fault rupture and suffered damage commensurate with the type of feature, its orientation to the fault, and the amount, sense and width of surface rupture deformation.

Audio, Radio New Zealand

1. Hon PHIL GOFF to the Prime Minister: Does he have confidence in his Minister of Finance? 2. CRAIG FOSS to the Minister of Finance: How much does the Government expect to spend over the next few years to help rebuild Christchurch in the aftermath of the two earthquakes? 3. Hon ANNETTE KING to the Minister for Social Development and Employment: Does she stand by her statement in regard to hardship assistance that "…I think it proves that the help is there when people need it,"; if so, why? 4. RAHUI KATENE to the Minister of Health: What action, if any, has been taken in light of the study Ethnicity and Management of Colon Cancer in New Zealand: Do Indigenous Patients Get a Worse Deal?, which concluded that Māori New Zealanders with colon cancer were less likely to receive adjuvant chemotherapy and experienced a lower quality of care compared with non-Māori patients? 5. CHRIS AUCHINVOLE to the Minister for the Environment: What steps is the Government taking to increase renewable electricity generation in light of reports that greenhouse gas emissions from this sector have increased by 120 percent, which is more than any other sector since 1990? 6. Hon CLAYTON COSGROVE to the Minister of Finance: Excluding the banks and non-bank financial institutions covered by the deposit guarantee scheme, are there any other companies that might be provided with a government guarantee while the Rt Hon John Key is Prime Minister? 7. JONATHAN YOUNG to the Acting Minister of Energy and Resources: What is Petrobras able to do under the permit granted to it in the Raukumara Basin? 8. DAVID CLENDON to the Acting Minister of Energy and Resources: What environmental protection provisions, if any, did the Government include in the permit granted to Petrobras to explore for oil and drill off the East Cape? 9. Hon TREVOR MALLARD to the Prime Minister: Does he have confidence in all Ministers involved in the Mediaworks frequency payment arrangement? 10. AARON GILMORE to the Minister of Revenue: What has Inland Revenue done to assist the people in Christchurch after the February earthquake? 11. GRANT ROBERTSON to the Minister responsible for Ministerial Services: Does he stand by his statements in relation to the purchase of 34 BMWs by Ministerial Services, including one with heated seats, that "Yeah I don't know what's in Dunedin" and "It's beyond me, it's not my car anyway"? 12. SHANE ARDERN to the Minister of Fisheries and Aquaculture: What has been the result of enforcement action taken by the Ministry of Fisheries under Operation Paid and Taskforce Webb?

Research papers, University of Canterbury Library

This project was initiated by ENGEO Limited and KiwiRail Holdings Limited to assess the stability of Slovens Creek Viaduct (specifically its western abutment) and a 3km section of rail corridor between Slovens Creek Viaduct and Avoca on the Midland Line (MDL). Commonly known as the scenic TranzAlpine rail journey (through Arthurs Pass National Park) the MDL connects Greymouth to Christchurch via Rolleston, where the MDL meets the Main South Line into Christchurch. The project area is approximately 40km southeast of Arthurs Pass Township, in the eastern extension of the Castle Hill Basin which is part of the Waimakariri Catchment and Canterbury Foothills. The field area is underlain by Rakaia Terrane, which is part of the Torlesse Composite Terrane forming the basement rock unit for the field area. Cretaceous-Tertiary rocks of the Castle Hill Basin overlie the basement strata and record a transgression-regression sequence, as well as mid-Oligocene submarine volcanism. The stratigraphic sequence in the Castle Hill Basin, and its eastern extension to Avoca, comprises two formations of the Eyre group, the older Broken River Formation and the younger Iron Creek Formation. Deep marine Porter Group limestones, marls, and tuffs of Oligocene age succeed the Iron Creek Formation of the Eyre Group, and probably records the maximum of the transgression. The Enys Formation lies disconformably on the Porter Group and is overlain unconformably by Late Pleistocene glacifluvial and glacial deposits. The Tertiary strata in the Slovens-Avoca rail corridor are weak, and the clay-rich tuff derived from mid-Oligocene volcanism is particularly prone to slaking. Extensive mapping carried out for this project has identified that some 90 percent of the surface along the length of the Slovens-Avoca corridor has been subject to mass movement. The landslides of the Slovens-Avoca rail corridor are clearly younger than the Last Glaciation, and Slovens Creek has been downcutting, with associated faulting and uplift, to form the present day geomorphology of the rail corridor. Deep-seated landslides in the rail corridor extend to Slovens Creek, locally deflecting the stream course, and a generic ground failure model for the rail corridor has been developed. Exploratory geotechnical investigations, including core drilling, installation of an inclinometer and a piezometer, enabled the construction of a simple ground model and cross section for the Slovens Creek Viaduct western abutment. Limit-equilibrium and pseudo-static slope stability analyses using both circular and block critical slip surface search methods were applied to the ground model for the western abutment of Slovens Creek Viaduct. Piezometric and strength data obtained during laboratory testing of core material have been used to constrain the western abutment stability assessment for one representative section line (C-C’). Prior to pseudo-static sensitivity analyses peak ground acceleration (PGA) for various Ultimate Limit State (ULS) design return periods, defined by an equation given in NZS1170.5:2004, were calculated and have been used as a calibration technique to find and compare specific PGA values for pseudo-static analyses in the Slovens Creek Viaduct area. The main purpose has been to provide an indication of how railway infrastructure could be affected by seismic events of various return periods defined by ULS design standards for the area. Limit equilibrium circular slip surface search methods, both grid search and auto refine search, indicated the slope is stable with a FoS greater than 1.0 returned from each, although one particular surface returned the lowest FoS in each. This surface is in the lower portion of the slope, adjacent to Slovens Stream and northeast of the MDL. As expected, pseudo-static analyses returned a lower FoS overall when compared to limit equilibrium analyses. The PGA analyses suggest that partial ground failure at the Slovens Creek Viaduct western abutment could occur in a 1 in 25-year return period event within materials on the slower slope beyond the immediate rail corridor. A ULS (1 in 500-year) event in the Slovens Creek Viaduct area would likely produce a PGA of ~0.9g, and the effects on the western abutment and rail infrastructure would most likely be catastrophic. Observed ground conditions for the western abutment of the Slovens Creek Viaduct suggest there is no movement within the landslide at depth within the monitoring timeframe of this project (22 May 2015 – 4 August 2015). Slope stability monitoring is recommended to be continued in two parts: (1) the inclinometer in BH1 is to be monitored on a six monthly basis for one year following completion of this thesis, and then annually unless ground movements become evident; and (2) surface movement monitoring should be installed using a fixed datum on the stable eastern abutment. Long-term stability management strategies for the Slovens Creek Viaduct western abutment are dependent upon future observed changes and ongoing monitoring. Hazard and risk assessment using the KiwiRail Qualitative Risk Assessment Framework (QRA) is recommended, and if slope stability becomes problematic for operation of the Midland Line consideration should be given to deep slope drainage. In the event of a large magnitude or high PGA earthquake all monitoring should be reviewed.

Research papers, University of Canterbury Library

Following the 22nd February 2011, Mw 6.2 earthquake located along a previously unknown fault beneath the Port Hills of Christchurch, surface cracking was identified in contour parallel locations within fill material at Quarry Road on the lower slopes of Mount Pleasant. GNS Science, in the role of advisor to the Christchurch City Council, concluded that these cracks were a part of a potential rotational mass movement (named zone 11A) within the fill and airfall loess material present. However, a lack of field evidence for slope instability and an absence of laboratory geotechnical data on which slope stability analysis was based, suggested this conclusion is potentially incorrect. It was hypothesised that ground cracking was in fact due to earthquake shaking, and not mass movement within the slope, thus forming the basis of this study. Three soil units were identified during surface and subsurface investigations at Quarry Road: fill derived from quarry operations in the adjacent St. Andrews Quarry (between 1893 and 1913), a buried topsoil, and underlying in-situ airfall loess. The fill material was identified by the presence of organic-rich topsoil “clods” that were irregular in both size (∼10 – 200 mm) and shape, with variable thicknesses of 1 – 10 m. Maximum thickness, as indicated by drill holes and geophysical survey lines, was identified below 6 Quarry Road and 7 The Brae where it is thought to infill a pre-existing gully formed in the underlying airfall loess. Bearing strength of the fill consistently exceeded 300 kPa ultimate below ∼500 mm depth. The buried topsoil was 200 – 300 mm thick, and normally displayed a lower bearing strength when encountered, but not below 300 kPa ultimate (3 – 11 blows per 100mm or ≥100 kPa allowable). In-situ airfall loess stood vertically in outcrop due to its characteristic high dry strength and also showed Scala penetrometer values of 6 – 20+ blows per 100 mm (450 – ≥1000 kPa ultimate). All soils were described as being moist to dry during subsurface investigations, with no groundwater table identified during any investigation into volcanic bedrock. In-situ moisture contents were established using bulk disturbed samples from hand augers and test pitting. Average moisture contents were low at 9% within the fill, 11 % within the buried topsoil, and 8% within the airfall loess: all were below the associated average plastic limit of 17, 15, and 16, respectively, determined during Atterberg limit analysis. Particle size distributions, identified using the sieve and pipette method, were similar between the three soil units with 11 – 20 % clay, 62 – 78 % silt, and 11 – 20 % fine sand. Using these results and the NZGS soil classification, the loess derived fill and in-situ airfall loess are termed SILT with some clay and sand, and the buried topsoil is SILT with minor clay and sand. Dispersivity of the units was found using the Emerson crumb test, which established that the fill can be non- to completely dispersive (score 0 – 4). The buried topsoil was always non-dispersive (score 0), and airfall loess completely dispersive (score 4). Values for cohesion (c) and internal friction angle (φ) of the three soil units were established using the direct shear box at field moisture contents. Results showed all soil units had high shear strengths at the moisture contents tested (c = 18 – 24 kPa and φ = 42 – 50°), with samples behaving in a brittle fashion. Moisture content was artificially increased to 16% within the buried topsoil, which reduced the shear strength (c = 10 kPa, φ = 18°) and allowed it to behave plastically. Observational information indicating stability at Quarry Road included: shallow, discontinuous, cracks that do not display vertical offset; no scarp features or compressional zones typical of landsliding; no tilted or deformed structures; no movement in inclinometers; no basal shear zone identified in logged core to 20 m depth; low field moisture contents; no groundwater table; and high soil strength using Scala penetrometers. Limit equilibrium analysis of the slope was conducted using Rocscience software Slide 5.0 to verify the slope stability identified by observational methods. Friction, cohesion, and density values determined during laboratory were input into the two slope models investigated. Results gave minimum static factor of safety values for translational (along buried topsoil) and rotational (in the fill) slides of 2.4 – 4.2. Sensitivity of the slope to reduced shear strength parameters was analysed using c = 10 kPa and φ = 18° for the translational buried topsoil plane, and a cohesion of 0 kPa within the fill for the rotational plane. The only situation that gave a factor of safety <1.0 was in nonengineered fill at 0.5 m depth. Pseudostatic analysis based on previous peak ground acceleration (PGA) values for the Canterbury Earthquake Sequence, and predicted PGAs for future Alpine Fault and Hope Fault earthquakes established minimum factor of safety values between 1.2 and 3.3. Yield acceleration PGAs were computed to be between 0.8g and 1.6g. Based on all information gathered, the cracking at Quarry Road is considered to be shallow deformation in response to earthquake shaking, and not due to deep-seated landsliding. It is recommended that the currently bare site be managed by smoothing the land, installing contour drainage, and bioremediation of the surface soils to reduce surface water infiltration and runoff. Extensive earthworks, including removal of the fill, are considered unnecessary. Any future replacement of housing would be subject to site-specific investigations, and careful foundation design based on those results.