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Effectiveness of evacuation facilities in Honiara City, Solomon Islands: a spatial perspective

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  • Reginald Reuben

    (Ministry of Environment, Climate Change, Disaster Management and Meteorology)

  • John H. Lowry

    (The University of the South Pacific)

Abstract

Urban areas in South Pacific island countries are experiencing the effects of natural disasters related to extreme weather events, cyclones and flooding. The aim of this study was to evaluate 27 existing evacuation facilities in Honiara City and nearby areas from a spatial perspective. We use the concept of “service areas” to determine whether a given facility, or all facilities taken collectively, is accessible to the populations within its geographic proximity. To determine geographic proximity, we use the network analysis capabilities of a geographic information system (GIS) to establish service areas. Service areas are defined as the area within which people can reach a facility along a road network in a given amount of time based on the cost, or impedance, of travel along the network. Using this approach, we use the overlay capabilities of the GIS to estimate the percentage of each facility’s service area that “captures” the populations, or areas, in greatest need. With GIS census data, road network data, flood hazard data and evacuation facility data from the recent April 2014 extreme weather event, we examine the relative effectiveness of the existing facilities. We focus on disasters associated with severe weather, especially flooding and storm surge. Our analysis suggests that the 27 existing evacuation facilities in Honiara and nearby areas taken collectively provide reasonably good coverage of those populations in greatest need in a flooding or storm-surge event. However, we also find some facilities are poorly located and subsequently under used.

Suggested Citation

  • Reginald Reuben & John H. Lowry, 2016. "Effectiveness of evacuation facilities in Honiara City, Solomon Islands: a spatial perspective," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(1), pages 227-244, May.
    • Handle: RePEc:spr:nathaz:v:82:y:2016:i:1:d:10.1007_s11069-016-2189-0
    DOI: 10.1007/s11069-016-2189-0
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    References listed on IDEAS

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    1. S. Jonkman & J. Vrijling & A. Vrouwenvelder, 2008. "Methods for the estimation of loss of life due to floods: a literature review and a proposal for a new method," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 46(3), pages 353-389, September.
    2. Nathan Wood & Mathew Schmidtlein, 2012. "Anisotropic path modeling to assess pedestrian-evacuation potential from Cascadia-related tsunamis in the US Pacific Northwest," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 62(2), pages 275-300, June.
    3. Nathan Wood & Mathew Schmidtlein, 2013. "Community variations in population exposure to near-field tsunami hazards as a function of pedestrian travel time to safety," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 65(3), pages 1603-1628, February.
    4. Susan L. Cutter & Bryan J. Boruff & W. Lynn Shirley, 2003. "Social Vulnerability to Environmental Hazards," Social Science Quarterly, Southwestern Social Science Association, vol. 84(2), pages 242-261, June.
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    Cited by:

    1. Adams, Carl & Neef, Andreas, 2019. "Patrons of disaster: The role of political patronage in flood response in the Solomon Islands," World Development Perspectives, Elsevier, vol. 15(C), pages 1-1.

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