4.6 Article

Evacuating isolated islands with marine resources: A Bowen Island case study

出版社

ELSEVIER
DOI: 10.1016/j.ijdrr.2022.102865

关键词

Case study; Evacuation routing; Emergency management; Planning under uncertainty; Island evacuation; Evacuation analysis

资金

  1. Marine Observation, Prediction and Response (MEOPAR) Network of Centres of Excellence (NCE)
  2. Province of British Columbia [2-02-03-041]
  3. Bowen Island Municipality
  4. Province of British Columbia through the Community Emergency Preparedness Fund

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This paper focuses on the understudied problem of island evacuation, particularly for islands without permanent road connections to the mainland. It presents a collaborative approach that optimizes the evacuation plan for Bowen Island in Canada and involves a broad range of stakeholders. The results show that the evacuation time depends on various factors and can be accelerated by temporary staging areas.
Inhabited islands are susceptible to natural hazards, such as wildfires. To avoid disasters, preventative measures and guidelines need to be in place to strengthen community resilience. If these fail, evacuation is often the only choice. However, island evacuation is a vastly understudied problem in both research and practice, particularly for islands without permanent road connections to the mainland that require marine evacuation. Multiple vessel trips are necessary to evacuate the population from suitable access points, which previous studies did not entertain. Furthermore, most existing studies either focus on evacuations from an academic, or from a government perspective. Instead, this paper presents a collaborative approach. It applies a recently developed evacuation routing model that optimizes the evacuation plan for Bowen Island in Canada through minimizing the expected evacuation time across disaster scenarios. These were designed with the participation of a broad range of stakeholders, from local residents and volunteer groups to agencies from all levels of government and companies, which integrates both academic and practical perspectives to maximize solution quality. Different options for fleet sizes, staging locations and scenarios were considered. The results show that the optimized evacuation time for Bowen Island varies between 1 and 8 h, as it strongly depends on the disaster scenario, the evacuation fleet, and can be accelerated by temporary staging areas. The suitability of the approach for evacuation studies can be confirmed through the identification of key improvements for increased community resilience and the inclusion of the results in the official Bowen Island evacuation plan.

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