The 2010-2011 Canterbury earthquake sequence was extremely damaging to structures in Christchurch and continues to have a large economic and social impact on the city and surrounding regions. In addition to strong ground shaking (Bradley and Cubrinovski 2011 SRL; Bradley 2012 SDEE), extensive liquefaction was observed, particularly in the 4 September 2010 Darfield earthquake and the 22 February 2011 Christchurch earthquake (Cubrinovski et al. 2010 BNZSEE; 2011 SRL). Large observed vertical ground motion amplitudes were recorded in the events in this sequence, with vertical peak ground accelerations of over 2.2g being observed at the Heathcote Valley Primary School during the Christchurch earthquake, and numerous other vertical motions exceeding 1.0g (Bradley and Cubrinovski 2011 SRL; Bradley 2012 SDEE; Fry et al 2011 SRL). Vertical peak ground accelerations of over 1.2g were observed in the Darfield earthquake.
The number of people displaced by the latest Canterbury earthquake will be clearer by the end of Tuesday, acting Civil Defence Minister Gerry Brownlee says.
Recycling is often employed as part of a disaster waste management system. However, the feasibility, method and effectiveness of recycling varies between disaster events. This qualitative study is based on literature reviews, expert interviews and active participatory research of five international disaster events in developed countries (2009 Victorian Bushfires, Australia; 2009 L’Aquila earthquake, Italy; 2005 Hurricane Katrina, United States; 2010 and 2011 Canterbury earthquakes, New Zealand; 2011 Great East Japan earthquake) to answer three questions: What are the main factors that affect the feasibility of recycling post-disaster? When is on-site or off-site separation more effective? What management approaches improve recycling effectiveness? Seven disaster-specific factors need to be assessed to determine the feasibility of disaster waste recycling programmes: volume of waste; degree of mixing of waste; human and environmental health hazards; areal extent of the waste; community priorities; funding mechanisms; and existing and disaster-specific regulations. The appropriateness of on or off-site waste separation depends on four factors: time constraints; resource availability; degree of mixing of waste and human and public health hazards. Successful recycling programmes require good management including clear and well enforced policies (through good contracts or regulations) and pre-event planning. Further research into post-disaster recycling markets, funding mechanisms and recycling in developing countries is recommended.
Despite their good performance in terms of their design objectives, many modern code-prescriptive buildings built in Christchurch, New Zealand had to be razed after the 2010-2011 Canterbury earthquakes because repairs were deemed too costly due to widespread sacrificial damage. Clearly a more effective design paradigm is needed to create more resilient structures. Rocking, post-tensioned connections with supplemental energy dissipation can contribute to a damage avoidance designs (DAD). However, few have achieved all three key design objectives of damage-resistant rocking, inherent recentering ability, and repeatable, damage-free energy dissipation for all cycles, which together offer a response which is independent of loading history. Results of experimental tests are presented for a near full-scale rocking beam-column sub-assemblage. A matrix of test results is presented for the system under varying levels of posttensioning, with and without supplemental dampers. Importantly, this parametric study delineates each contribution to response. Practical limitations on posttensioning are identified: a minimum to ensure static structural re-centering, and a maximum to ensure deformability without threadbar yielding. Good agreement between a mechanistic model and experimental results over all parameters and inputs indicates the model is robust and accurate for design. The overall results indicate that it is possible to create a DAD connection where the non-linear force-deformation response is loading history independent and repeatable over numerous loading cycles, without damage, creating the opportunity for the design and implementation of highly resilient structures.
ANDREW LITTLE to the Prime Minister: What are the priorities for the Government in assisting communities affected by yesterday’s earthquake?
MATT DOOCEY to the Minister of Finance: What advice has he received about the economic impact of the Kaikōura earthquake?
EUGENIE SAGE to the Minister of Transport: What updates can he give on the transport sector’s response to earthquake damage to State Highway 1 and the rail line between Seddon and Cheviot?
GRANT ROBERTSON to the Minister of Finance: What is his initial assessment of the fiscal impact of yesterday morning’s earthquake and what, if any, new or changed Budget allocations is he considering in response to the earthquake?
PAUL FOSTER-BELL to the Minister of Civil Defence: How is the Government supporting people affected by the Kaikōura earthquake?
RON MARK to the Minister of Civil Defence: Can the Government assure New Zealanders on our level of preparedness for all natural disasters?
SUE MORONEY to the Minister of Transport: What roads and public transport services are currently not operational following damage from the earthquake yesterday and when is it expected access and services will be restored?
BRETT HUDSON to the Minister of Transport: What action is the Government taking to repair damaged transport infrastructure following the Kaikōura earthquake?
GARETH HUGHES to the Minister of Broadcasting: Will she join with me to acknowledge the work of all media in New Zealand, which is so important in times of natural disaster and crisis; if so, will she consider increasing our public broadcaster Radio New Zealand’s funding in Budget 2017?
CLAYTON MITCHELL to the Minister of Civil Defence: What progress has been made, if any, on new civil defence legislation which focuses on large and significant events such as the Christchurch and Kaikōura earthquakes?
ALASTAIR SCOTT to the Minister of Health: What updates has he received on the Government’s health response to the Kaikōura earthquake?
CLARE CURRAN to the Minister of Civil Defence: What actions have been taken by Civil Defence to ensure those people in the areas worst hit by the earthquake have enough food, clothing, water, and shelter?
The 2015 New Zealand strong-motion database provides a wealth of new strong motion data for engineering applications. An important component of this database is the compilation of new site metadata, describing the soil conditions and site response at GeoNet strong motion stations. We have assessed and compiled four key site parameters for the ~460 GeoNet stations that recorded significant historical ground motions. Parameters include: site classification (NZS1170.5), Vs30, fundamental site period (Tsite) and depth to bedrock (Z1.0, i.e. depth to material with Vs > 1000 m/s). In addition, we have assigned a quality estimate (Quality 1 – 3) to these parameters to provide a qualitative estimate of the uncertainty. New highquality Tsite estimates have largely been obtained from newly available HVSR amplification curves and spectral ratios from inversion of regional strong motion data that has been reconciled with available geological information. Good quality Vs30 estimates, typically in urban centres, have also been incorporated following recent studies. Where site-specific measurements of Vs30 are not available, Vs30 is estimated based on surface geology following national Vs30 maps. New Z1.0 values have been provided from 3D subsurface models for Canterbury and Wellington. This database will be used in efforts to guide development and testing of new and existing ground motion prediction models in New Zealand. In particular, it will allow reexamination of the most important site parameters that control and predict site response in a New Zealand setting. Furthermore, it can be used to provide information about suitable rock reference sites for seismological research, and as a guide to site-specific references in the literature. We discuss compilation of the database, preliminary insights so far, and future directions.
In this paper, we perform hybrid broadband (0-10 Hz) ground motion simulations for the ten most significant events (Mw 4.7-7.1) in the 2010-2011 Canterbury earthquake sequence. Taking advantage of having repeated recordings at same stations, we validate our simulations using both recordings and an empirically-developed ground motion prediction equation (GMPE). The simulation clearly captures the sedimentary basin amplification and the rupture directivity effects. Quantitative comparisons of the simulations with both recordings and the GMPE, as well as analyses of the total residuals (indicating model bias) show that simulations perform better than the empirical GMPE, especially for long period. To scrutinize the ground motion variability, we partitioned the total residuals into different components. The total residual appears to be unbiased, and the use of a 3D velocity structure reduces the long period systematic bias particularly for stations located close to the Banks Peninsula volcanic area.
Resilience and community spirit have shone through in North Canterbury in the aftermath of the earthquake. With no active civil defence post in operation in Cheviot in the days after the 7.8 quake, a group of locals mobilised a task force to support those in need. Further north at Mendip Hills Station farm manager Simon Lee has been repairing broken water pipes and clearing slips in time for weaning, while on Ben Lissington's dairy farm near Waiau, milk tankers are having to go off the beaten track to get to the rotary shed after a six metre section of the road was destroyed.
In this dissertation it is argued that the Canterbury Earthquake Recovery Act 2011 and the Canterbury Earthquake Recovery Authority were both necessary and inevitable given the trends and traditions of civil defence emergency management (CDEM) in New Zealand. The trends and traditions of civil defence are such that principles come before practice, form before function, and change is primarily brought about through crisis and criticism. The guiding question of the research was why were a new governance system and law made after the Canterbury earthquakes in 2010 and 2011? Why did this outcome occur despite the establishment of a modern emergency management system in 2002 which included a recovery framework that had been praised by international scholars as leading edge and a model for other countries? The official reason was the unprecedented scale and demands of the recovery – but a disaster of such scale is the principle reason for having a national emergency management system. Another explanation is the lack of cooperation among local authorities – but that raises the question of whether the CDEM recovery framework would have been successful in another locality. Consequentially, the focus of this dissertation is on the CDEM recovery framework and how New Zealand came to find itself making disaster law during a disaster. Recommendations include a review of emergency powers for recovery, a review of the capabilities needed to fulfil the mandate of Recovery Managers, and the establishment of a National Recovery Office with a cadre of Recovery Managers that attend every recovery to observe, advise, or assume control as needed. CDEM Group Recovery Managers would be seconded to the National Recovery Office which would allow for experience in recovery management to be developed and institutionalised through regular practice.
NUK KORAKO to the Minister of Finance: How does New Zealand’s growing economy and the Government’s commitment to responsible fiscal management mean New Zealand is well-placed to respond to the Kaikōura earthquake?
ANDREW LITTLE to the Prime Minister: Has he spoken to relevant Ministers about the lessons learned from the Canterbury earthquakes to ensure people affected by the recent earthquakes have an easier and faster recovery?
STUART SMITH to the Minister of Civil Defence: What update can he provide about the Government’s response to the Kaikōura earthquake?
RON MARK to the Prime Minister: Can he update the House on the situation in quake-affected areas in the South Island?
JAMES SHAW to the Prime Minister: Is he committed to all his Government’s policies?
Hon ANNETTE KING to the Minister of Health: Does he stand by his statement that following the Valentine’s Day earthquake this year in Canterbury, “it was timely to review whether any additional mental health and wellbeing support was needed”; if so, will he consider reviewing whether any additional support is needed for Canterbury and Nelson-Marlborough district health boards as a result of the recent earthquakes?
JACQUI DEAN to the Minister of Transport: What updates has he received on damage to transport infrastructure following the Kaikōura earthquake?
JAN LOGIE to the Minister for Workplace Relations and Safety: What is his response to yesterday’s call from members of the Joint Working Group on Pay Equity Principles for the Government to “immediately right this historic wrong and implement the JWG principles”?
JACINDA ARDERN to the Minister for Economic Development: When is he likely to announce a recovery or support package for small businesses in earthquake-affected areas?
KANWALJIT SINGH BAKSHI to the Minister of Police: What are New Zealand Police doing to support the Kaikōura community?
CHRIS HIPKINS to the Minister of Education: When did she first discuss the potential impact of Monday’s 7.5 earthquake on NCEA and Scholarship exams with the New Zealand Qualifications Authority?
IAN McKELVIE to the Minister for Primary Industries: What recent reports has he received on the impact of the recent earthquakes on the primary sector?
