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Now showing 1 - 7 of 7
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    ‘One big team working together’ - Shifting narratives to encourage civic participation and collective action in disaster preparedness
    (Elsevier Ltd, 2025-02-15) Das M; Becker J; Doyle EEH
    Disaster risks cannot be reduced by individual efforts alone and necessitate community participation and collective action. However, communicating and encouraging collective action is difficult. Existing studies show that stories and narratives are useful to convey complex less-understood phenomena, like disasters, in a comprehendible and relatable manner. As such, this paper explores existing disaster narratives and aims to understand how they encourage civic participation and collective action for reducing disaster risks. The findings show that the framing of disasters in mass media narratives are unlikely to encourage collective action as they do not emphasize citizen's agency and efficacy in reducing disaster risks. However, in the narratives shared at the local level between emergency management agencies and community members, there is currently a shift towards emphasizing community agency, efficacy, and responsibilities in reducing disaster risks. Four dominant themes are identified in these narratives: reframing the concept of heroes, promoting connection and care, emphasizing collective efficacy and collective responsibility. While the narratives are beneficial, they also cause some tensions, such as, confusion arising from lingering response-centric narratives; frustration around the collective responsibility narratives; and resistance to the current narratives as they are perceived as attempts by emergency management agencies to transfer emergency management responsibilities to people. The implications of the findings and the future directions are presented.
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    Transformative approaches to disaster risk reduction: Social, societal, and environmental contributions to post-disaster capacity building
    (Massey University, 2024-12) Paton D; Buergelt PT; Becker JS; Doyle EEH; Jang L-J; Johnston DM; Tedim F
    This paper discusses whether Community Engagement Theory (CET) could be augmented in ways that afford opportunities to develop a framework for understanding how emergent change and transformative learning can occur in disaster response and recovery settings. The foundation for doing so derives from appreciating that CET describes process theory that comprises variables representing adaptive capacities. That is, the presence of these capacities enables people to adapt to any set of circumstances, particularly when people are called upon to make decisions and to act during conditions of uncertainty. This approach builds on the potential for variables such as community participation, collective efficacy, and empowerment to provide a social context for people to formulate and enact strategies to support their recovery and to be able to do so when interacting with government, non-government, and business entities. However, based on a critical comparative analysis of relevant research into post-disaster emergent and transformational shifts in community capacity, it is argued that the above variables need to be augmented. The paper discusses the rationale for including factors such as community leadership, governance, place attachment, and city identity in an augmented conceptual transdisciplinary transformative learning Disaster Risk Reduction (DRR) model. The function of this model is consistent with the Sendai Framework for DRR Priority 4, Building Back Better goal.
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    A new volcanic multi-hazard impact model for water supply systems: Application at Taranaki Mounga, Aotearoa New Zealand
    (Elsevier B.V., 2024-12-24) Porter H; Wilson TM; Weir A; Stewart C; Craig HM; Wild AJ; Paulik R; Fairclough R; Buzzella M
    Water supply systems provide an essential service for society and are highly vulnerable to damage and disruption during volcanic eruptions. Impacts sustained by water supply systems during volcanic eruptions have resulted in prolonged and repeated supply outages. Previous approaches to assessing volcanic impacts to water supply systems have been relatively simplistic, based on hazard intensity thresholds, and only considering direct damage. There is a need for water supply risk assessment approaches informed by vulnerability models that consider the pivotal role of system design and indirect impacts; such as supply and demand fluctuations, personnel shortages, and disruptions to interdependent infrastructure networks. We present a whole-of-system volcanic vulnerability model and impact assessment framework for water supply systems that can be used to estimate system-wide impacts during future volcanic eruptions. This model is developed in collaboration with volcanic risk researchers and water supply engineers in Aotearoa New Zealand and applied to a case study in the Taranaki region for a long-duration and multi-hazard eruption scenario from the active stratovolcano Taranaki Mounga. The model provides an assessment of the functionality of water supply systems affected directly and indirectly by the scenario eruption, interdependent critical infrastructure services, and associated emergency management actions (e.g., evacuations). This scenario, and its modelled impacts, allows practitioners to explore potential mitigation and emergency response options. This framework can be applied in other volcanic contexts to assess impacts on water supplies from future eruptions, highlight key systemic vulnerabilities, and provide a basis for the prioritisation and implementation of risk management strategies.
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    Fostering civic participation and collective actions for disaster risk reduction: Insights from Aotearoa New Zealand case studies
    (Elsevier Ltd., 2024-11-03) Das M; Becker J; Doyle EEH
    This paper explores how community members collaborate with emergency management organizations in the pre-disaster stage and engage in collective actions for reducing disaster risks in their communities. Utilizing four qualitative case studies from New Zealand, we examined how local groups interested in reducing community level disaster risks form, the nature of their collective actions and collaboration with emergency management organizations, their facilitators and barriers and the outcomes of the processes. The findings suggest that people's involvement, collaboration, and collective action in the pre-disaster stage entails participating in programmes administered by emergency management organizations through diverse community groups, informal emergency response teams, and specialized volunteer groups. The two primary goals are to have a group of people ready to provide immediate support in an event by maintaining community response teams and making prior arrangements that support people to spontaneously volunteer in an emergency, through community emergency hub approach. These groups engage in tasks such as creating community response plans, maintaining resources, and fostering communication and social capital. The factors facilitating these efforts include hazard awareness, community conversations, institutional support and active DRR organizations, clear objectives, skilled facilitators, and ensuring community solutions are supported. However, currently, community involvement in the pre-disaster stage is narrowly focused on improving response outcomes, lacking a broader perspective of addressing developmental and environmental issues that create risks. They are also rooted in the idea of a solidaristic community and rely on social capital. We discuss the implications of the current practices and the way forward.
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    Rapid remote volcanic ashfall impact assessment for the 2022 eruption of Hunga volcano, Tonga: a bespoke approach and lessons identified
    (Springer Nature, 2024-10-28) Weir AM; Williams JH; Wilson TM; Hayes JL; Stewart C; Leonard GS; Magill C; Jenkins SF; Williams S; Craig HM; Kula T; Fraser S; Pomonis A; Gunasekera R; Daniell JE; Coultas E
    When disasters occur, rapid impact assessments are required to prioritise response actions, support in-country efforts and inform the mobilisation of aid. The 15 January 2022 eruption of Hunga volcano, Tonga, and the resulting atmospheric shockwave, ashfall, underwater mass disturbance and tsunami, caused substantial impacts across the Kingdom of Tonga. Volcanic impacts on the scale observed after the eruption are rare, necessitating a reliance on international advice and assistance. The situation was complicated by the loss of Tonga’s international submarine fibreoptic cable (causing a complete loss of communications for approximately 20 days) along with border closures due to the COVID-19 pandemic. A need emerged for a rapid remote volcanic impact assessment and provision of specialist advice to help inform the response of international partners. Here we present a novel methodology for conducting rapid remote volcanic ashfall impact assessments, conducted over a 10-day period following the eruption. We used three different hazard models for ashfall thickness across the main island of Tongatapu and available asset information and vulnerability functions for buildings, agriculture, electricity networks, water supply and roads, to provide initial estimates of losses due to ashfall from the 15 January eruption. For buildings, we estimated losses both as total losses and as percentages of the total replacement cost of buildings on Tongatapu. For agriculture, we made probabilistic estimates of production losses for three different crop classes. For ashfall clean-up, we estimated ranges of ashfall volumes requiring clean-up from road surfaces and roofs. For water supply, electricity networks and roads, our analysis was limited to assessing the exposure of important assets to ashfall, as we had insufficient information on system configurations to take the analysis further. Key constraints on our analysis were the limited nature of critical infrastructure asset inventories and the lack of volcanic vulnerability models for tropical regions including Pacific Island nations. Key steps towards iteratively improving rapid remote impact assessments will include developing vulnerability functions for tropical environments as well as ground-truthing estimated losses from remote approaches against in-person impact assessment campaigns.
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    Approaching the challenge of multi-phase, multi-hazard volcanic impact assessment through the lens of systemic risk: application to Taranaki Mounga
    (Springer Nature, 2024-08-01) Weir AM; Wilson TM; Bebbington MS; Beaven S; Gordon T; Campbell-Smart C; Mead S; Williams JH; Fairclough R
    Effective volcanic impact and risk assessment underpins effective volcanic disaster risk management. Yet contemporary volcanic risk assessments face a number of challenges, including delineating hazard and impact sequences, and identifying and quantifying systemic risks. A more holistic approach to impact assessment is required, which incorporates the complex, multi-hazard nature of volcanic eruptions and the dynamic nature of vulnerability before, during and after a volcanic event. Addressing this need requires a multidisciplinary, integrated approach, involving scientists and stakeholders to co-develop decision-support tools that are scientifically credible and operationally relevant to provide a foundation for robust, evidence-based risk reduction decisions. This study presents a dynamic, longitudinal impact assessment framework for multi-phase, multi-hazard volcanic events and applies the framework to interdependent critical infrastructure networks in the Taranaki region of Aotearoa New Zealand, where Taranaki Mounga volcano has a high likelihood of producing a multi-phase explosive eruption within the next 50 years. In the framework, multi-phase scenarios temporally alternate multi-hazard footprints with risk reduction opportunities. Thus, direct and cascading impacts and any risk management actions carry through to the next phase of activity. The framework forms a testbed for more targeted mitigation and response planning and allows the investigation of optimal intervention timing for mitigation strategies during an evolving eruption. Using ‘risk management’ scenarios, we find the timing of mitigation intervention to be crucial in reducing disaster losses associated with volcanic activity. This is particularly apparent in indirect, systemic losses that cascade from direct damage to infrastructure assets. This novel, dynamic impact assessment approach addresses the increasing end-user need for impact-based decision-support tools that inform robust response and resilience planning.
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    A modular framework for the development of multi-hazard, multi-phase volcanic eruption scenario suites
    (Elsevier BV, 2022-07) Weir AM; Mead S; Bebbington MS; Wilson TM; Beaven S; Gordon T; Campbell-Smart C
    Understanding future volcanic eruptions and their potential impact is a critical component of disaster risk reduction, and necessitates the production of salient, robust hazard information for decision-makers and end-users. Volcanic eruptions are inherently multi-phase, multi-hazard events, and the uncertainty and complexity surrounding potential future hazard behaviour is exceedingly hard to communicate to decision-makers. Volcanic eruption scenarios are recognised to be an effective knowledge-sharing mechanism between scientists and practitioners, and recent hybrid scenario suites partially address the limitations surrounding the traditional deterministic scenario approach. Despite advances in scenario suite development, there is still a gap in the international knowledge base concerning the synthesis of multi-phase, multi-hazard volcano science and end-user needs. In this study we present a new modular framework for the development of complex, long-duration, multi-phase, multi-hazard volcanic eruption scenario suites. The framework was developed in collaboration with volcanic risk management agencies and researchers in Aotearoa-New Zealand, and is applied to Taranaki Mounga volcano, an area of high volcanic risk. This collaborative process aimed to meet end-user requirements, as well as the need for scientific rigour. This new scenario framework development process could be applied at other volcanic settings to produce robust, credible and relevant scenario suites that are demonstrative of the complex, varying-duration and multi-hazard nature of volcanic eruptions. In addressing this gap, the value of volcanic scenario development is enhanced by advancing multi-hazard assessment capabilities and cross-sector collaboration between scientists and practitioners for disaster risk reduction planning.