A magnitude 6.2 earthquake was felt widely throughout the central New Zealand and as far south as Christchurch today. We spoke to people throughout the country, who described what impact the quake had on them.
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.
Eye patients in South Auckland face threats to their eyesight because of long waits for treatment. But patients in central Auckland do not. The Auckland DHB doesn't have a backlog, but Counties Manukau has 4000 people waiting to see a specialist. Why is there such a difference? Simon Dean is head of ophthalmology at Counties Manukau. He tells Susie Ferguson the size of their department is the main problem at Counties-Manukau DHB. It was due for an upgrade in 2013 but was sidelined because of the needs around the Christchurch earthquake.
Background and methodology The Mw 7.8, 14th November 2016 earthquake centred (item b, figure 1) in the Hurunui District of the South Island, New Zealand, damaged critical infrastructure across North Canterbury and Marlborough. We investigate the impacts to infrastructure and adaptations to the resulting service disruption in four small rural towns (figure 1): Culverden (a), Waiau (c), Ward (d) and Seddon (e). This is accomplished though literary research, interviews and geospatial analysis. Illustrating our methods, we have displayed here a Hurunui District hazard map (figure 2b) and select infrastructure inventories (figures 2a, 3).
Detailed studies on the sediment budget may reveal valuable insights into the successive build-up of the Canterbury Plains and their modification by Holocene fluvialaction connected to major braided rivers. Additionally, they bear implications beyond these fluvial aspects. Palaeoseismological studies claim to have detected signals of major Alpine Fault earthquakes in coastal environments along the eastern seaboard of the South Island (McFadgen and Goff, 2005). This requires high connectivity between the lower reaches of major braided rivers and their mountain catchments to generate immediate significant sediment pulses. It would be contradictory to the above mentioned hypothesis though. Obtaining better control on sediment budgets of braided rivers like the Waimakariri River will finally add significant value to multiple scientific and applied topics like regional resource management. An essential first step of sediment budget studies Is to systematically map the geomorphology, conventionally in the field and/or using remote-sensing applications, to localise, genetically identify, and classify landforms or entire toposequences of the area being investigated. In formerly glaciated mountain environments it is also indispensable to obtain all available chronological information supporting subsequent investigations.
MARK PATTERSON to the Minister of Defence: What progress has been made on the coalition Government’s commitment to expand the Limited Service Volunteer Scheme? Hon SIMON BRIDGES to the Prime Minister: Does she stand by all of her Government’s policies and actions? KIRITAPU ALLAN to the Minister of Finance: What discussions did he have on economic issues on his trip to South Korea and Singapore? Hon STEVEN JOYCE to the Minister of Finance: Does he still intend for all new capital expenditure in Budget 2018 to fit within the $3.4 billion capital allowance as stated in the 2018 Budget Policy Statement? Hon MICHAEL WOODHOUSE to the Minister of Housing and Urban Development: Does he stand by all his statements on the proposed Kiwibuild programme? GOLRIZ GHAHRAMAN to the Minister of Statistics: How is this year’s census different from previous years? MELISSA LEE to the Minister of Broadcasting, Communications and Digital Media: Does she believe it is important for State-owned broadcasters to be independent? JONATHAN YOUNG to the Minister for Regional Economic Development: Does he stand by all the decisions and statements he has made regarding the Provincial Growth Fund? Dr DUNCAN WEBB to the Minister responsible for the Earthquake Commission: What steps has she taken to speed up the fair resolution of outstanding claims relating to the Christchurch earthquakes that occurred seven years ago? Hon NATHAN GUY to the Minister of Agriculture: Does he stand by all of his statements and actions? Hon MARK MITCHELL to the Minister of Defence: Does he stand by all his statements? JO LUXTON to the Minister of Education: What concerns does he have about the future provision of vocational education in New Zealand’s regions?
On November 14 2016 a magnitude 7.8 earthquake struck the south island of New Zealand. The earthquake lasted for just two minutes with severe seismic shaking and damage in the Hurunui and Kaikōura districts. Although these are predominantly rural areas, with scattered small towns and mountainous topography, they also contain road and rail routes that are essential parts of the national transport infrastructure. This earthquake and the subsequent recovery are of particular significance as they represent a disaster following in close proximity to another similar disaster, with the Canterbury earthquakes occurring in a neighboring district five years earlier. The research used an inductive qualitative case study to explore the nature of the Kaikōura recovery. That recovery process involved a complex interplay between the three parties; (a) the existing local government in the district, (b) central government agencies funding the recovery of the local residents and the national transport infrastructure, and (c) recovery leaders arriving with recent expertise from the earlier Canterbury disaster. It was evident that three groups: locals, government, and experts represented a multi-party governance debate in which the control of the Kaikōura earthquake recovery was shared amongst them. Each party had their own expertise, adgenda and networks that they brought to the Kaikōura recovery, but this created tensions between external expertise and local, community leadership. Recent earthquake research suggests that New Zealand is currently in the midst of an earthquake cluster, with further seismic disasters likely to occur in relatively close succession. This is likely to be compounded by the increasing frequency of other natural disasters with the effects of climate change. The present study investigates a phenomenon that may become increasingly common, with the transfer of disaster expertise from one event to another, and the interface between those experts with local and national government in directing recoveries. The findings of this study have implications for practitioners and policy makers in NZ and other countries where disasters are experienced in close spatial and temporal proximity.
This study is a qualitative investigation into the decision-making behaviour of commercial property owners (investors and developers) who are rebuilding in a city centre after a major disaster. In 2010/2011, Christchurch, the largest city in the South Island of New Zealand, was a site of numerous earthquakes. The stronger earthquakes destroyed many buildings and public infrastructure in the commercial inner city. As a result, affected property owners lost all or most of their buildings, a significant proportion of which were old and in the last phase of their life span. They had to negotiate pay-outs with insurance companies and decide, once paid out, whether they should rebuild in Christchurch or sell up and invest elsewhere. The clear majority of those who decided to reinvest in and rebuild the city are ‘locals’, almost all of whom had no prior experience of property development. Thus, in a post-disaster environment, most of these property owners have transitioned from being just being passive investors to active property developers. Their experience was interpreted using primary data gathered from in-depth and semi-structured interviews with twenty-one “informed property people” who included commercial property owners; property agents or consultants; representatives of public-sector agencies and financial institutions. The study findings showed that the decision-making behaviour of property investors and developers rebuilding after a major disaster did not necessarily follow a strict financial or profit motive as prescribed in the mainstream or neo-classical economics property literature. Rather, their decision-making behaviour has been largely shaped by emotional connections and external factors associated with their immediate environment. The theoretical proposition emerging from this study is that after a major disaster, local urban property owners are faced with two choices “to stay” or “to go”. Those who decide to stay and rebuild are typically very committed individuals who have a feeling of ownership, belonging and attachment to the city in which they live and work. These are people who will often take the lead in commercial property development, proactively making decisions and seeking positive investment outcomes for themselves which in turn result in revitalised commercial urban precincts
Field trips are one of the most critical pieces of learning for students in sciences like geology, biology, and geography. Virtual field trips (VFT) are being increasingly considered as sophisticated and effective forms of teaching, especially with the rise of new technologies and the growing demand for more inclusive classroom environments. This research developed a virtual field trip for Tertiary students in an introductory-level geology course (GEOL 113: Environmental Geohazards) at the University of Canterbury. This initiative was in partnership with LEARNZ – a highly esteemed virtual fieldtrip team run by CORE Education that creates successful VFTs for Primary and Secondary students in New Zealand. Key components of the Tertiary VFT include a student acting as the virtual field trip teacher interviewing experts and leading the field trip, web-based background material, online assessment, and photos. In two successive academic years, students participated in the VFT during lectures and as pre class assignments prior to a one-day earthquake hazards workshop. In 2016, the virtual field trip used the LEARNZ web platform and occurred synchronously with the class; in 2017 the virtual fieldtrip reused the video, images and word documents from the previous year with the addition of a Google Earth component and with no reliance on the LEARNZ web platform. The goals of the trip were designed to prepare students for the earthquake hazards workshop, in which students analysed earthquake impacts over varying timescales and then applied that knowledge to develop strategies for the recovery of three crucial industries (dairy, mining, or tourism) on the West Coast of New Zealand’s South Island. In both years, number of clicks data showed that students interacted with online material far more during this week of the course than any other. Following the synchronous version in 2016, the students who were surveyed reported (1) they enjoyed the trip, (2) they found background material useful for preparation for the trip and the workshop, and (3) the additional work was at the appropriate level. Despite predominantly positive responses from the students, we experienced some negative feedback from participating staff mainly associated with stress and technical difficulties in running the synchronous VFT. With the asynchronous trip in 2017, staff reported a highly positive overall experience, with a perceived enhanced interaction with class during lecture time, and an increased and enhanced engagement with course material outside of class. The student survey again showed that the majority of students surveyed enjoyed the virtual fieldtrip, and that it was useful preparation for the workshop. Additionally, they reported an improved link between earth processes and society, which was a key overarching aim for the course. We propose that the synchronous version poses more excitement and immersion in the field environment, whereas the reuse of the asynchronous version increases the utility (and hence value for money) of the trip, and minimises technical difficulties and lecturer stress. Additionally, re-using the material in the asynchronous version offered opportunities to improve and supplement the past content, such as the incorporation of following an annotated trip path in Google Earth. As recommendations for others interested in developing virtual fieldtrips, we report that the design of a virtual fieldtrip should include (1) Goal-aligned content and assessment for both practice and marks, (2) a student and instructor experience that is authentic and flexible to both the people and the place. We suggest that these aims can be achieved whatever the budget or timeframe and make our material freely available at https://serc.carleton.edu/index.html.