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Research papers, University of Canterbury Library

Generalized conditional intensity measure (GCIM) method is extended to ground motion selection for scenario ruptures. Using different rupture scenarios and site conditions, various aspects of the GCIM methodology are scrutinized, including: (i) implementation of different weight vectors and the composition of the IM vector; (ii) quantifying the importance of replicate selections for different number of desired ground motions; and (iii) the effect of considering bounds on the implicit causal parameters of the prospective ground motions. Using the extended methodology, representative ground motion ensembles for several major earthquake scenarios in New Zealand are developed. Cases considered include representative ground motions for the occurrence of Alpine, Hope, and Porters Pass earthquakes in Christchurch city, and the occurrence of Wellington, Wairarapa, and Ohariu fault ruptures in Wellington city. Challenges in the development of ground motion ensembles for subduction zone earthquakes are also highlighted. The selected scenario-based ground motion sets can be used to complement ground motions which are often selected in conjunction with probabilistic seismic hazard analysis, in order to understand the performance of structures for the question “what if this fault ruptures?”

Research papers, University of Canterbury Library

Generalized conditional intensity measure (GCIM) method is extended to ground motion selection for scenario ruptures. Using different rupture scenarios and site conditions, various aspects of the GCIM methodology are scrutinized, including: (i) implementation of different weight vectors and the composition of the IM vector; (ii) quantifying the importance of replicate selections for different number of desired ground motions; and (iii) the effect of considering bounds on the implicit causal parameters of the prospective ground motions. Using the extended methodology, representative ground motion ensembles for several major earthquake scenarios in New Zealand are developed. Cases considered include representative ground motions for the occurrence of Alpine, Hope, and Porters Pass earthquakes in Christchurch city, and the occurrence of Wellington, Wairarapa, and Ohariu fault ruptures in Wellington city. Challenges in the development of ground motion ensembles for subduction zone earthquakes are also highlighted. The selected scenario-based ground motion sets can be used to complement ground motions which are often selected in conjunction with probabilistic seismic hazard analysis, in order to understand the performance of structures for the question “what if this fault ruptures?”

Research papers, University of Canterbury Library

In September 2010 and February 2011, the Canterbury region experienced devastating earthquakes with an estimated economic cost of over NZ$40 billion (Parker and Steenkamp, 2012; Timar et al., 2014; Potter et al., 2015). The insurance market played an important role in rebuilding the Canterbury region after the earthquakes. Homeowners, insurance and reinsurance markets and New Zealand government agencies faced a difficult task to manage the rebuild process. From an empirical and theoretic research viewpoint, the Christchurch disaster calls for an assessment of how the insurance market deals with such disasters in the future. Previous studies have investigated market responses to losses in global catastrophes by focusing on the insurance supply-side. This study investigates both demand-side and supply-side insurance market responses to the Christchurch earthquakes. Despite the fact that New Zealand is prone to seismic activities, there are scant previous studies in the area of earthquake insurance. This study does offer a unique opportunity to examine and document the New Zealand insurance market response to catastrophe risk, providing results critical for understanding market responses after major loss events in general. A review of previous studies shows higher premiums suppress demand, but how higher premiums and a higher probability of risk affect demand is still largely unknown. According to previous studies, the supply of disaster coverage is curtailed unless the market is subsidised, however, there is still unsettled discussion on why demand decreases with time from the previous disaster even when the supply of coverage is subsidised by the government. Natural disaster risks pose a set of challenges for insurance market players because of substantial ambiguity associated with the probability of such events occurring and high spatial correlation of catastrophe losses. Private insurance market inefficiencies due to high premiums and spatially concentrated risks calls for government intervention in the provision of natural disaster insurance to avert situations of noninsurance and underinsurance. Political economy considerations make it more likely for government support to be called for if many people are uninsured than if few people are uninsured. However, emergency assistance for property owners after catastrophe events can encourage most property owners to not buy insurance against natural disaster and develop adverse selection behaviour, generating larger future risks for homeowners and governments. On the demand-side, this study has developed an intertemporal model to examine how demand for insurance changes post-catastrophe, and how to model it theoretically. In this intertemporal model, insurance can be sought in two sequential periods of time, and at the second period, it is known whether or not a loss event happened in period one. The results show that period one demand for insurance increases relative to the standard single period model when the second period is taken into consideration, period two insurance demand is higher post-loss, higher than both the period one demand and the period two demand without a period one loss. To investigate policyholders experience from the demand-side perspective, a total of 1600 survey questionnaires were administered, and responses from 254 participants received representing a 16 percent response rate. Survey data was gathered from four institutions in Canterbury and is probably not representative of the entire population. The results of the survey show that the change from full replacement value policy to nominated replacement value policy is a key determinant of the direction of change in the level of insurance coverage after the earthquakes. The earthquakes also highlighted the plight of those who were underinsured, prompting policyholders to update their insurance coverage to reflect the estimated cost of re-building their property. The survey has added further evidence to the existing literature, such as those who have had a recent experience with disaster loss report increased risk perception if a similar event happens in future with females reporting a higher risk perception than males. Of the demographic variables, only gender has a relationship with changes in household cover. On the supply-side, this study has built a risk-based pricing model suitable to generate a competitive premium rate for natural disaster insurance cover. Using illustrative data from the Christchurch Red-zone suburbs, the model generates competitive premium rates for catastrophe risk. When the proposed model incorporates the new RMS high-definition New Zealand Earthquake Model, for example, insurers can find the model useful to identify losses at a granular level so as to calculate the competitive premium. This study observes that the key to the success of the New Zealand dual insurance system despite the high prevalence of catastrophe losses are; firstly the EQC’s flat-rate pricing structure keeps private insurance premiums affordable and very high nationwide homeowner take-up rates of natural disaster insurance. Secondly, private insurers and the EQC have an elaborate reinsurance arrangement in place. By efficiently transferring risk to the reinsurer, the cost of writing primary insurance is considerably reduced ultimately expanding primary insurance capacity and supply of insurance coverage.

Research papers, The University of Auckland Library

This paper presents a qualitative study with multiple refugee background communities living in Christchurch, New Zealand about their perspectives and responses to the Canterbury earthquakes of 2010-2011 (32 semi-structured interviews and 11 focus group discussions comprising 112 participants). Whilst the Canterbury earthquakes created significant challenges for the entire region, several refugee background communities found multiple ways to effectively respond to such adversity. Central to this response were their experiences of belonging which were comprised of both ‘civic’ and ‘ethno’ conceptualisations. This discussion includes an analysis on the intersectionality of identity to highlight the gendered, contextual and chronological influences that impact people’s perspectives of and responses to a disaster. As the study was conducted over 18 months, the paper discusses how social capital resources and experiences of belonging can help inform urban disaster risk reduction (DRR) with refugee groups. http://3icudr.org/program

Images, Alexander Turnbull Library

A container labelled 'Chch East residents'has landed on the far side of the planet Mars. Others have landed or are descending. People in space suits exit the containers. One of them shakes hands with a green Martian commenting to him that the ground there is solid, it has nice views and the locals are a lot less alien than the insurance agents back home. Context: refers to NASA's exploration of the surface of Mars by the Curiosity rover. The rover landed on Mars in September 2012 and the ongoing problems of earthquake survivors in Christchurch's eastern suburbs. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Shows Christchurch's Anglican cathedral receiving extensive treatment including blood, ambulances, scaffold and signs reading 'save!' In the background Christchurch's Catholic Cathedral says it wants its share of attention as well. Context: The focus of repairing the Christchurch Anglican cathedral appeared to draw focus and resources from the equally historic and damaged Catholic Cathedral. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

The title reads 'Greener square for Christchurch?..' The cartoon depicts the city centre in Christchurch entirely covered with green and there are cows wandering by the stream as well as grazing on the tops of buildings. A man at the top of the green cathedral says 'I can see it really growing on me!' Context: This is a reference to the draft Central City plan under which the Central City will be greener and more attractive. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text across the top of the cartoon reads 'Greener pastures for red zone residents?... A new subdivision named 'Quakehaven' has streets named 'Wobble Way', 'Poopong Parade', 'Turd Tce.', 'Liquefaction Lane' etc. One of a couple visiting the new area says 'I've got a bad feeling about this new subdivision!' Context - Housing after the Christchurch earthquakes. After the first Land Report was delivered on 23rd June people whose houses were in the Red Zone had their properties bought up by the government and now have to move to new subdivisions. The suggestion in the cartoon is that the subdivisions may not be on safe ground. Quantity: 1 digital cartoon(s).

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One brown cardboard box which contained a dozen bottles of Three Boys Brewery ‘Aftershock’ beer. The Three Boys logo and name features in black printing on each side with 12x500ml printed on long sides. A dark green sticker with white writing, which also appears on the bottles, is attached to the top leaf. Christchurch's artisan Three Boys Brew...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One green glass 500ml bottle of Three Boys Brewery ‘Aftershock’ beer. The bottle has a dark green rectangular label with white writing and the brewery logo on front and back. The bottle is sealed by a brass cap with a piece of red brick on top; brick and cap are sealed in wax. Christchurch's artisan Three Boys Brewery sustained only minor damag...

Images, Canterbury Museum

One red swirled fabric 'Heart for Christchurch' decorated with a tiki stitched in green on the front; green and red tartan fabric on reverse; red ribbon loop so the item can be displayed; an attached piece of green paper reads 'From Linda who lives in Scotland but who has a daughter, son-in-law & 3 small grandsons who live in Timaru'. Made for t...