Mapping Exposure to Flooding in Three Coastal Communities on the North Slope of Alaska Using Airborne LiDAR
Mapping Exposure to Flooding in Three Coastal Communities on the North Slope of Alaska Using Airborne LiDAR
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DOI：
10.1080/08920753.2020.1732798
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发表时间：
2020-03
影响因子：
2.5
通讯作者：
T. Lantz;Nina D. Moffat;B. Jones;Qi Chen;C. Tweedie
中科院分区：
文献类型：
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作者：
T. Lantz;Nina D. Moffat;B. Jones;Qi Chen;C. Tweedie
沿海风暴的加剧，加上海冰覆盖率下降、海平面上升和永久冻土条件的变化，可能会增加北极沿海环境中风暴潮洪水的发生率和影响。在沿海社区，关于基础设施风险的准确信息可对适应规划作出重要贡献。在这项研究中，我们使用高分辨率的高程数据从机载激光雷达生成风暴洪水的情况下，在北方阿拉斯加州的三个沿海社区（Utqiahavik，温赖特，和Kaktovik）。为了估计每个社区因洪水对基础设施造成的潜在破坏，我们生成了重置成本数据，并使用它来估计24种不同强度的风暴洪水情景的财务影响。该分析表明，所有三个社区都暴露在风暴潮中，但强调了一个事实，即Utqiavik（北坡自治市的行政中心）的基础设施比温赖特和Kaktovik的建筑物暴露得更多。我们的研究结果表明，洪水情景可以补充从过去事件中获得的信息，并有助于为当地决策提供信息。
Abstract The intensification of coastal storms, combined with declining sea ice cover, sea level rise, and changes to permafrost conditions, will likely increase the incidence and impact of storm surge flooding in Arctic coastal environments. In coastal communities accurate information on the exposure of infrastructure can make an important contribution to adaptation planning. In this study, we use high resolution elevation data from airborne LiDAR to generate storm flooding scenarios for three coastal communities (Utqiaġvik, Wainwright, and Kaktovik) in northern Alaska. To estimate the potential for damage to infrastructure caused by flooding for each community, we generated data on replacement costs and used it to estimate the financial impact of 24 storm flooding scenarios of varying intensities. This analysis shows that all three communities are exposed to storm surges, but highlights the fact that infrastructure in Utqiaġvik (the administrative center of the North Slope Borough) is significantly more exposed than buildings in Wainwright and Kaktovik. Our findings show that flooding scenarios can complement information gained from past events and help to inform local-decision making.