Citizen science for disaster risk reduction (DRR) holds huge promise and has demonstrated success in advancing scientific knowledge, providing early warning of hazards, and contributed to the assessment and management of impacts. While many existing studies focus on the performance of specific citizen science examples, this paper goes beyond this approach to present a systematic global mapping of citizen science used for DRR in order to draw out broader insights across diverse methods, initiatives, hazards and country contexts. The systematic mapping analyzed a total of 106 cases of citizen science applied to DRR across all continents. Unlike many existing reviews of citizen science initiatives, relevance to the disaster risk context led us to 'open up' our mapping to a broader definition of what might constitute citizen science, including participatory research and narrative-based approaches. By taking a wider view of citizen science and opening up to other disciplinary practices as valid ways of knowing risks and hazards, we also capture these alternative examples and discuss their relevance for aiding effective decision-making around risk reduction. Based on this analysis we draw out lessons for future research and practice of citizen science for DRR including the need to: build interconnections between disparate citizen science methods and practitioners; address multi-dimensionality within and across hazard cycles; and develop principles and frameworks for evaluating citizen science initiatives that not only ensure scientific competence but also attend to questions of equity, responsibility and the empowerment of those most vulnerable to disaster risk.
The post-disaster period is critical for reducing vulnerability and building resilience. Social capital plays an important role in generating and maintaining risk reducing behaviour and a rich evidence base demonstrating its contribution to the recovery process exists. Yet, so far little distinction has been made between the different types of social capital, despite important variations of outcomes. To address this gap, this article examines the evolving roles of specific forms of social capital on the long-term post-disaster recovery process. We explore the disaster recovery process on the active volcanic island of Montserrat in the Caribbean, marked by rapid and intense post-disaster demographic change following the beginning of the eruption in 1995. We explore the challenges of the shift from a relatively homogenous to a relatively diverse population for building a resilient society. Our investigation illustrates the complexity of the recovery process and the coexistence of conflicting objectives which, if poorly managed, can create new forms of vulnerability and impede the sustainability of the development process. We argue that not all forms of social capital development are beneficial for the long-term recovery process. In a diversifying society, bonding social capital may have perverse effect while bridging and linking social capital may be key for building social cohesion, a key contributor to sustainable development. We argue that measures for redevelopment should be sensitive to the long-term effects of different forms of social capital, in particular their consequences for building social cohesion, a key contributor to sustainable recovery in a dynamically changing society.
A forensic analysis of fatalities and displacements from recent volcanic eruptions (1986-2015) provides insights into factors that influence actions to protect life in high-risk environments. Unlike many other geophysical hazard events, volcanic eruptions may be prolonged, and of variable intensity. This is reflected in patterns of volcanic fatalities. A global survey reveals that 63% of primary volcanic deaths occur after the first week of activity, with >44% of these deaths associated with citizens returning to an established high-hazard zone. Evacuations during volcanic eruptions are protracted and this allows time for competing pressures to arise. Examination of detailed data from three volcanic crises (La Soufriere, St Vincent and the Grenadines, Soufrière Hills, Montserrat and Tungurahua, Ecuador) suggests that the need to preserve livelihoods plays a strong role in protecting life. A dynamic, associated with pull (e.g., protecting assets, place attachment) and push factors (e.g., poor shelter conditions), can draw evacuees to return during high-risk periods. Similar considerations can restrain people with previous experience of volcanic hazards and displacement, from evacuating. Our global analysis shows that these pressures, when coupled with forecasting uncertainties and the rapid landscape change associated with volcanic eruptions, mean that the physical and social vulnerability of populations change significantly during the course of an eruption. Ongoing risk to life is shaped by hazard experience and action; timescales of hazard escalation and their relationship to warning and action; and the timescales over which evacuation conditions are tolerable to livelihood and asset preservation, and mental and physical wellbeing in shelters.
When some active volcanoes enter into an eruptive phase, they generate a succession of hazard events manifested over a multi-year period of time. Under such conditions of prolonged risk, understanding what makes a population vulnerable to volcanic threats is a complex and nuanced process, and must be analysed within the wider context of physical events, decisions, actions and inactions which may have accentuated the social differentiation of impacts. Further, we must acknowledge the temporal component of vulnerability, therefore our analyses must go beyond a transitory view to an understanding of the dynamics of vulnerability, particularly how inherent socio-economic conditions drive vulnerability today, and how patterns of vulnerability shift during the course of a long-lived crisis
Abstract. The uncertainty brought about by intermittent volcanic activity is fairly common at volcanoes worldwide. While better knowledge of any one volcano's behavioural characteristics has the potential to reduce this uncertainty, the subsequent reduction of risk from volcanic threats is only realised if that knowledge is pertinent to stakeholders and effectively communicated to inform good decision making. Success requires integration of methods, skills and expertise across disciplinary boundaries.This research project develops and trials a novel interdisciplinary approach to volcanic risk reduction on the remote volcanic island of Tristan da Cunha (South Atlantic). For the first time, volcanological techniques, probabilistic decision support and social scientific methods were integrated in a single study. New data were produced that (1) established no spatio-temporal pattern to recent volcanic activity; (2) quantified the high degree of scientific uncertainty around future eruptive scenarios; (3) analysed the physical vulnerability of the community as a consequence of their geographical isolation and exposure to volcanic hazards; (4) evaluated social and cultural influences on vulnerability and resilience; and (5) evaluated the effectiveness of a scenario planning approach, both as a method for integrating the different strands of the research and as a way of enabling on-island decision makers to take ownership of risk identification and management, and capacity building within their community.The paper provides empirical evidence of the value of an innovative interdisciplinary framework for reducing volcanic risk. It also provides evidence for the strength that comes from integrating social and physical sciences with the development of effective, tailored engagement and communication strategies in volcanic risk reduction.
The medium of film is well established for education and communication about hazardous phenomena as it provides engaging ways to directly view hazards and their impacts. Empirical analysis can help to understand films' effectiveness in informing populations at risk and catalysing action to reduce risk.Using volcanic eruptions as a focus, an evidence-based methodology was devised to create, use, and track the outcomes of digital film tools designed to raise hazard and risk awareness, and develop preparedness efforts. Experiences from two contrasting eruptions were documented, with the secondary purpose of fostering social and cultural memories of eruptions, developed in response to demand from at-risk communities during field-based research. The films were created as a partnership with local volcano monitoring scientists and at-risk populations who, consequently, became the leading focus of the films, thus offering a substantial contrast to other types of hazard communication.The films were analysed by sharing them with at-risk communities and evaluating the immediate influence on learning and affect. Results indicated that the use of local content and actors to share experiences and teach valuable lessons were inspirational. Recognizable faces and spaces helped to convey disaster risk reduction messages. They This study demonstrated the effectiveness of co-production in the design and execution of intervention strategies for volcanic risk reduction. Co-production of films with local agencies resulted in products that were contextually appropriate, meaningful for audiences, and useful risk communication tools. Acronyms
The historically active volcanic ocean island of Tristan da Cunha exhibits a complex and dynamic history, with numerous, often compositionally distinct, parasitic centers punctuating the large edifice. To date, the temporal relationship between differing styles of activity has been unclear. We have applied high-precision 40Ar/39Ar dating to 15 carefully selected samples from Tristan da Cunha to ascertain spatio-temporal relationships of recent volcanism, explore episodicity, and establish if the most recent summit activity post-dated eruptions from parasitic centers lower on the flanks. This has yielded a new suite of reliable Holocene ages, with the youngest dated deposit at 3 ± 1 ka (1σ). A recent flow at the summit was constrained to 5 ± 1 ka (1σ), confirming that summit and parasitic activity on the volcano’s flanks overlap in time. The oldest dated deposits were 118 ± 4 ka (1σ) from a parasitic cone in the southern sector, and 81 ± 10 ka (1σ) from one of the lowest sub-aerial shield-forming lava flows in the northern sector. Large-scale sector collapse is bracketed between 34 ± 1 ka and 26 ± 5 ka (1σ) via dating of the youngest headwall lava flow and oldest sub-aerial scarp-filling deposits. No systematic relationship between the new temporal framework, vent location, and eruptive compositions was found. Although magmatic flux has been inferred to be relatively low, Tristan da Cunha is capable of relatively frequent eruptions from a wide variety of vent locations across a broad range of compositions
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