Spatial Footprints of Storm Surges Along the Global Coastlines
Spatial Footprints of Storm Surges Along the Global Coastlines
复制标题
DOI：
10.1029/2020jc016367
复制
发表时间：
2020-09-01
影响因子：
3.6
通讯作者：
Haigh, Ivan D.
中科院分区：
文献类型：
--
作者：
Enriquez, Alejandra R.;Wahl, Thomas;Haigh, Ivan D.
我们利用观测和模拟的风暴潮数据，首次对风暴潮的空间足迹进行了全球分析。三种不同的技术应用于量化空间足迹：聚类分析，共现百分比和联合概率分析。模拟数据能够很好地反映风暴潮的足迹。结果确定了容易同时受到相同风暴潮事件影响的海岸线延伸。全球各地的空间足迹大小不同，部分受海岸线地理条件的影响，即更不规则的海岸线由更多不同足迹大小的不同风暴潮群组成。对于西北大西洋，当特别考虑到热带气旋时，使用风暴潮模拟中的风暴路径信息，风暴潮的空间足迹是不同的。我们的研究结果为全球范围内风暴潮的空间足迹提供了重要的新见解，并将通过考虑这些空间特征，有助于改善沿海洪水风险的识别、评估和管理方式。
We perform the first global analysis of the spatial footprints of storm surges, using observed and simulated storm surge data. Three different techniques are applied to quantify the spatial footprints: clustering analysis, percentage of co-occurrence, and joint probability analysis. The capability of the simulated data to represent the observed storm surge footprints is demonstrated. Results lead to the identification of coastline stretches prone to be impacted simultaneously by the same storm surge events. The spatial footprint sizes differ around the globe, partially conditioned by the geography of the coastline, that is, more irregular coastlines consist of a larger number of different storm surge clusters with varying footprint sizes. For the northwestern Atlantic, spatial footprints of storm surges vary when specifically accounting for tropical cyclones, using storm track information in the storm surge simulations. Our results provide important new insights into the spatial footprints of storm surges at the global scale and will help to facilitate improvements in how coastal flood risk is identified, assessed, and managed, by taking these spatial features into account.