Hurricane Irene and the Pea Island Breach: Pre-storm site characterization and storm surge estimation using geospatial technologies
Hurricane Irene and the Pea Island Breach: Pre-storm site characterization and storm surge estimation using geospatial technologies
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飓风艾琳和豌豆岛决口：使用地理空间技术进行风暴前现场特征描述和风暴潮估计
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Overton
中科院分区：
文献类型：
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作者：
Adam Clinch;E. Russ;Ross C. Oliver;H. Mitásová;M. Overton
2011年8月，飓风艾琳进入帕姆利科湾并向北移动，迫使北卡罗来纳州外滩群岛（英语：Outer Banks of North Carolina）的ZDWHUWRWKHZHVWWKDWUHERXQGHGLQDVLJQLoFDQWVWRUPVXUJHWRWKHEDFNVLGHRIWKH屏障岛屿形成。从俄勒冈州水湾到罗丹瑟的豌豆岛（Pea Island）因其狭窄的障壁岛且易受海浪和涌浪影响，一直以来都非常容易受到风暴影响，但艾琳登陆时的一级飓风等级令人意外地造成了如此严重的破坏。这个SDSHUUHYLHZVVLPLODUKLVWRULFVWRUPVZLWKVRXQGVLGH？RRGLQJRQWKH�2XWHU�%DQNV�基于正射影像和风暴前LiDAR地形的几种技术DUHXVHGWRDQDO\）HWKHIRDWLRQRIWKLVEUHDFK�$�WHPSRUDOGXQHSURoOHDVHVVPHQW�显示了由于以前的风暴而造成的破坏地点的脆弱性。沿岸沙丘脊分析显示，在Hur-Irene事件之前，裂口处的沙丘海拔较低。遥感是用来估计从一个可区分的残骸线留在豌豆岛风暴后的音面浪涌海拔。淹没YLVXDOL）DWLRQVLPXODWHVWKHHIIHFWVRIDVLJQLoFDQWVRXQGVLGHVXUJHE\�？RRGLQJWKH-屏障岛在两个通道的位置的突破。
Hurricane Irene crossed into Pamlico Sound and tracked north in August 2011, forcing ZDWHUWRWKHZHVWWKDWUHERXQGHGLQDVLJQLoFDQWVWRUPVXUJHWRWKHEDFNVLGHRIWKH� barrier islands known as the Outer Banks of North Carolina. Pea Island from Oregon Inlet to Rodanthe, with its narrow barrier islands and exposure to waves and surge, has always been highly vulnerable to storm impact, but the severity of the damage from Irene was unexpected given the Category 1 status of the storm on landfall. This SDSHUUHYLHZVVLPLODUKLVWRULFVWRUPVZLWKVRXQGVLGH�?RRGLQJRQWKH�2XWHU�%DQNV�� Several techniques based on orthophoto imagery and pre-storm LiDAR topography DUHXVHGWRDQDO\)HWKHIRUPDWLRQRIWKLVEUHDFK��$�WHPSRUDOGXQHSURoOHDVVHVVPHQW� shows the vulnerability of the breach site due to previous storms. An alongshore dune ridge analysis reveals low dune elevations at the site of the breach before the Hur- ricane Irene event. Remote sensing is used to estimate the soundside surge elevations from a distinguishable wrack line left on Pea Island after the storm. An inundation YLVXDOL)DWLRQVLPXODWHVWKHHIIHFWVRIDVLJQLoFDQWVRXQGVLGHVXUJHE\�?RRGLQJWKH� barrier island in the locations of the two channels of the breach.