Seawalls for Coastal Protection and Climate Change Adaptation: A Case Study from the Gold Coast

Tomlinson, Rodger Benson; Jackson, LA

doi:10.1007/978-3-319-95711-1_58

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…But the available evidence does not support the claim that green adaptation is generally better than gray adaptation. We know that many gray adaptation strategies, such as sea walls, are highly effective in many cases (Tomlinson and Jackson 2019). But in other situations, gray strategies like flood insurance and infrastructure improvements can be maladaptive (Magnan et al 2016).…”

Section: Green Versus Gray Adaptation Strategiesmentioning

confidence: 99%

A New Heuristic for Climate Adaptation

Hoffman,

Kovaka

2023

Philos. sci.

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An influential heuristic for thinking about climate adaptation asserts that “natural” adaptation strategies are the best ones. This heuristic has been roundly criticized but is difficult to dislodge in the absence of an alternative. We introduce a new heuristic that assesses adaptation strategies by looking at their maturity, power, and commitment. Maturity is the extent to which we understand an adaptation strategy’s effects. Power is the size of the effect an adaptation strategy will have. Commitment is the degree to which an adaptation strategy is difficult to test or reverse.

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Section: Green Versus Gray Adaptation Strategiesmentioning

confidence: 99%

A New Heuristic for Climate Adaptation

Hoffman,

Kovaka

2023

Philos. sci.

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Effective coastal adaptation needs accurate hazard assessment: a case study in Port Resolution, Tanna Island Vanuatu

et al. 2022

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Developing countries face risks from coastal hazards that are being amplified by climate change. The selection of effective adaptation interventions to manage these risks requires a sufficiently accurate assessment of the coastal hazard at a given location. Yet challenges remain in terms of understanding local coastal risks given the coarseness of global wave models and the paucity of locally scaled data in most developing countries, including Small Island Developing States (SIDS) like Vanuatu. This paper aims to examine the differences in hazard assessment and adaptation option selections arising from analyses using globally versus locally scaled data on coastal processes. As a case study, we focused on an eroding cliff face in Port Resolution on Tanna Island, Vanuatu, which is of concern to the local community and government authorities. The coastal process modeling revealed that the global wave data generated unrealistically high predictions of wave height within Port Resolution Bay. Expensive engineering adaptations designed to provide coastal protection were therefore likely to fail in preventing ongoing cliff erosion. In this case, the best adaptation solution involves changing land use to revegetate and help stabilize the cliff top. Our case study highlights the importance of accurate hazard assessment, especially in data-poor regions where the extrapolation of global datasets and models in the absence of local data can result in poor adaptation decision-making. Furthermore, the multidisciplinary approach applied here can be applied in other data-poor regions to strengthen analyses exploring the benefits of local adaptation interventions.

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Identifying leverage points in climate change migration systems through expert mental models

2022

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As the impacts of climate change increase, the Intergovernmental Panel on Climate Change advises that global migration will also increase. A deeper understanding of the factors and interactions that influence the migration decision-making of climate-affected populations is needed to more accurately predict migration estimates and adequately inform and prepare future receiving cities. In this study, we survey thirty-two experts in the field of climate migration to explore how demographic, economic, environmental, political, and social factors interact to lead to climate (im)mobility and how these interactions change within sea level rise, drought, flooding, and erosion contexts. We use system mapping and network analysis to determine which factors should be targeted as leverage points for policy makers and their resulting effects within each hazard context. Our findings identify physical infrastructure, social services, social capital, and political stability as places to intervene to increase resiliency in drought, flooding, and erosion climate migration systems. Using hazard context and community consultation, we recommend selecting target factors with direct relationships to other highly influential factors (livelihoods, food security, and financial capital) to elicit the most positive cascading effects through the whole system, leading to changes in migration. We also highlight the sea level rise climate migration system as highly complex in comparison to the other contexts examined and the need for multi-factored interventions in this context to create more resilient migration systems. Our findings contribute to the growing body of work which seeks to better understand the interactions between factors influencing climate migration.

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Seawalls for Coastal Protection and Climate Change Adaptation: A Case Study from the Gold Coast

Cited by 4 publications

References 4 publications

A New Heuristic for Climate Adaptation

A New Heuristic for Climate Adaptation

Effective coastal adaptation needs accurate hazard assessment: a case study in Port Resolution, Tanna Island Vanuatu

Identifying leverage points in climate change migration systems through expert mental models

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