当前位置: X-MOL 学术Nat. Hazards Earth Syst. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Spatially Compounded Surge Events: An Example from Hurricanes Matthew and Florence
Natural Hazards and Earth System Sciences ( IF 4.6 ) Pub Date : 2021-01-29 , DOI: 10.5194/nhess-2021-31
Scott Curtis , Kelley DePolt , Jamie Kruse , Anuradha Mukherji , Jennifer Helgeson , Ausmita Ghosh , Philip Van Wagoner

Abstract. The simultaneous rise of tropical cyclone induced flood waters across a large hazard management domain can stretch rescue and recovery efforts. Here we present a means to quantify the connectedness of maximum surge during a storm with geospatial statistics. Tide gauges throughout the extensive estuaries and barrier islands of North Carolina deployed and operating during Hurricanes Matthew (n = 82) and Florence (n = 123) are used to compare the spatial compounding of surge for these two disasters. Moran's I showed the occurrence of maximum storm tide was more clustered for Matthew compared to Florence, and a semivariogram analysis produced a spatial range of similarly timed storm tide that was four times as large for Matthew than Florence. A more limited data set of fluvial flooding and precipitation in eastern North Carolina showed a consistent result – multivariate flood sources associated with Matthew were more concentrated in time as compared to Florence. Although Matthew and Florence were equally intense, they had very different tracks and speeds, which influenced the timing of surge along the coast. We hope this method could be used for other landfalling tropical cyclones to better understand the drivers that lead to spatially compounded surge events.

中文翻译:

空间复合浪涌事件:飓风马修和佛罗伦萨的例子

摘要。热带气旋引发的洪水在一个较大的灾害管理区域内同时上升,可能会延长救援和恢复工作。在这里,我们提出了一种利用地理空间统计数据量化风暴期间最大浪涌的连通性的方法。在飓风马修(n = 82)和佛罗伦萨(n = 123)期间部署和运行的北卡罗来纳州广阔河口和屏障岛的潮汐仪用于比较这两种灾害的浪涌空间复合。莫兰一世(Moran's I)显示,与佛罗伦萨相比,马修的最大风暴潮的发生更为集中,并且半变异函数分析得出的时间相近的风暴潮的空间范围对马修来说是佛罗伦萨的四倍。北卡罗莱纳州东部的河流洪水和降水的更有限的数据集显示了一致的结果–与佛罗伦萨相比,与马修相关的多元洪水源在时间上更集中。尽管马修(Matthew)和弗洛伦斯(Florence)的紧张程度相同,但他们的航迹和速度却大不相同,这影响了沿海岸猛增的时间。我们希望该方法可以用于其他登陆热带气旋,以更好地理解导致空间复合激增事件的驱动因素。
更新日期:2021-01-29
down
wechat
bug