Impacts of Hurricane Dorian on the Bahamas: field observations of hazard intensity and performance of the built environment

Impacts of Hurricane Dorian on the Bahamas: field observations of hazard intensity and performance of the built environment
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飓风多里安对巴哈马的影响:灾害强度和建筑环境性能的实地观察

DOI:
10.1080/21664250.2021.1958613
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发表时间:
2021
影响因子:
2.4
通讯作者:
Lochhead, Meredith
Lochhead, Meredith
中科院分区:
工程技术3区
文献类型:
--
作者:
Kijewski-Correa, Tracy;Roueche, David;Kennedy, Andrew;Allen, Doug;Marshall, Justin;Kaihatu, James;Wood, Richard L.;Smith, Daniel J.;Lester, Henry;Lochhead, Meredith

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2019年9月1日,飓风多里安以295公里/小时的持续风速在巴哈马群岛的肘礁登陆,中心气压为910兆巴,随后在马什港和大巴哈马岛登陆,停滞两天。本文介绍了由结构极端事件侦察(STEER)网络收集的多里安海岸灾害及其对这些地点建成环境的影响的现场观测。数据是采用混合方法收集的:(1)调查高水位线和淹没程度,包括马什港约8米高的水位线;(2)对358座建筑物的损坏进行表层法医评估;(3)使用街道全景图快速成像475公里的路线。实地观察得到了利用高分辨率卫星图像进行的碎片场分析的补充。观察到的性能重申了限制良好的高架建筑在主要飓风下表现良好的可能性,但需要通过增加风暴潮设计条款和增加巴哈马建筑规范中的设计风速来编纂这种做法。这项研究进一步证明了强大的侦察基础设施对于捕获飓风后易腐烂的数据并利用公众可访问的平台迅速提供这些数据的价值。
On September 1 2019, Hurricane Dorian made landfall in Elbow Cay in the Bahamas with sustained winds of 295 km/h and a central pressure of 910 mb, with subsequent landfalls in Marsh Harbour and Grand Bahama Island, where it stalled for two days. This paper presents field observations of Dorian’s coastal hazards and impacts on the built environment in these locales, collected by the Structural Extreme Events Reconnaissance (StEER) Network. Data were collected using a mixed methodological approach: (1) surveying high-water marks and inundation extent, including an approximately 8 m high water mark in Marsh Harbour, (2) conducting surface-level forensic assessments of damage to 358 structures, and (3) rapidly imaging 475 km of routes using street-level panoramas. Field observations are complemented by a debris field analysis using high-resolution satellite imagery. Observed performance reiterates the potential for well-confined, elevated construction to perform well under major hurricanes, but with the need to codify such practices through the addition of storm surge design provisions and an increase in the design wind speeds in the Bahamas Building Code. This study further demonstrates the value of robust reconnaissance infrastructure for capturing perishable data following hurricanes and making such data rapidly available using publicly accessible platforms.
飓风多里安对巴哈马的影响:空中景观
DOI: --
发表时间: 2020
期刊:
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佛罗里达州墨西哥海滩地区的飓风迈克尔
DOI: 10.1061/(asce)ww.1943-5460.0000590
发表时间: 2020
期刊: and Ocean Engineering
影响因子: --
作者:
Kennedy, Andrew;Copp, Andrew;Florence, Matthew;Gradel, Anderson;Gurley, Kurtis;Janssen, Matt;Kaihatu, James;Krafft, Douglas;Lynett, Patrick;Owensby, Margaret
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DOI: --
发表时间: 2018
期刊: Natural Hazards
影响因子: 3.7
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