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首页> 外文期刊>Shore and beach >Hurricane Irene and the Pea Island Breach: Pre-storm site characterization and storm surge estimation using geospatial technologies
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Hurricane Irene and the Pea Island Breach: Pre-storm site characterization and storm surge estimation using geospatial technologies

机译：艾琳飓风和豌豆岛突破：使用地理空间技术的暴风前场特征和暴风潮估算

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摘要

Hurricane Irene crossed into Pamlico Sound and tracked north in August 2011, forc ing water to the west. As the storm passed, a combination of winds and rebounding waters created a significant storm surge to the backside of the 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 paper reviews similar historic storms with soundside flooding on the Outer Banks. Several techniques based on orthophoto imagery and pre-storm lidar topography are used to analyze the formation of this breach. A temporal dune profile assessment 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 Hurricane 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 visualization simulates the effects of a significant soundside surge by flooding the barrier island in the loca tions of the two channels of the breach.
机译：艾琳飓风进入Pamlico Sound，并于2011年8月向北移动，迫使水流向西。随着暴风雨的过去，风和反弹水的共同作用在被称为北卡罗来纳州外滩的障碍岛的背面造成了巨大的风暴潮。从俄勒冈州入口到罗丹特岛的豌豆岛，由于其狭窄的隔离岛以及波及浪涌的影响，一直非常容易受到风暴的影响，但是鉴于风暴对登陆的第1类状态，艾琳造成的破坏的严重性出乎意料。本文回顾了类似的历史性暴风雨，外岸发生了声音泛滥。基于正射影像和暴风前激光雷达地形的几种技术被用来分析这种破坏的形成。临时沙丘剖面评估显示了由于先前的风暴而造成的破坏站点的脆弱性。沿海岸的沙丘脊分析显示，飓风“艾琳”事件发生前，突破口的沙丘高度较低。风暴后，遥感用于从豌豆岛上留下的明显的起伏线估算声侧喘振高度。淹没可视化通过在突破口的两个通道的位置淹没障碍岛，来模拟声侧浪涌的严重影响。

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  • 来源
    《Shore and beach》 |2012年第2期|p.38-46|共9页
  • 作者

    Adam S. Clinch; Emily R. Russ; Ross C. Oliver; Helena Mitasova; Margery F. Overton;

  • 作者单位

    North Carolina State University Department of Civil, Construction, and Environmental Engineering Raleigh, NC 27695-7908;

    North Carolina State University Department of Marine, Earth, and Atmospheric Sciences Raleigh, NC 27695-8208;

    North Carolina State University Department of Civil, Construction, and Environmental Engineering Raleigh, NC 27695-7908;

    North Carolina State University Department of Marine, Earth, and Atmospheric Sciences Raleigh, NC 27695-8208;

    North Carolina State University Department of Civil, Construction, and Environmental Engineering Raleigh, NC 27695-7908;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    wrack line; soundside flooding; bar rier island breaching; digital eleva tion models; aerial photography;

    机译：沉船线声音泛滥;屏障岛破坏;数字提升模型;航空摄影;

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