How the Swells of Hurricane Isabel Impacted Southeast Florida
How the Swells of Hurricane Isabel Impacted Southeast Florida
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DOI：
10.1175/bams-86-8-1065
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发表时间：
2005-08
影响因子：
8
通讯作者：
Richard J. Davis;Charles H. Paxton
中科院分区：
文献类型：
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作者：
Richard J. Davis;Charles H. Paxton
美国气象学会|1065年，一系列独特的事件发生，给佛罗里达东南海岸带来巨浪。2003年9月16日，强大的飓风伊莎贝尔产生的海浪沿着棕榈滩县南部一条16.1公里长的狭窄海滩爆发。这将是一个宁静的夏末海滩的一天变成了一个巨大的，危险的冲浪一天，当地的冲浪者和海滩游客将记住一生（图1）。沿着海岸线向北和向南沿着几英里的范围内，海浪要小得多。几天前，飓风伊莎贝尔是一场五级风暴，向西移动，在巴哈马群岛东南偏东数百英里处达到最高强度。飓风伊莎贝尔的强风产生了大量海浪，并向西北偏西方向朝巴哈马群岛移动。虽然在海浪生成区域缺乏观测数据，但这些涌浪可能随着伊莎贝尔向西移动，沿着最强风的方向在一长段海洋上移动，从而产生更长的吸引力。巨浪冲击了伊柳特拉岛和阿巴科岛的海滩，遮蔽了佛罗里达东南部的大部分海岸线。然而，这两个巴哈马群岛之间是狭窄但较深的普罗维登斯海峡，这使得巨浪在群岛之间传播，最终进入德尔雷海滩附近的佛罗里达东南海岸，产生了3.0-4.3米的巨浪。
AMERICAN METEOROLOGICAL SOCIETY | 1065 A unique series of events occurred that sent large waves to the southeast coast of Florida. The waves generated by powerful Hurricane Isabel broke along a narrow 10-mi (16.1-km) stretch of beaches along southern Palm Beach County on 16 September 2003. Th is transformed what would usually have been a tranquil late summer beach day into a day of enormous, dangerous surf that local surfers and beachgoers will remember for a lifetime (Fig. 1). Within a few miles north and south along the coast, the surf was much smaller. Several days earlier, Hurricane Isabel was a category-5 storm moving westward and spinning at peak intensity hundreds of miles east-southeast of the Bahama Islands. Hurricane Isabel’s strong winds produced large ocean swells that traveled west-northwest toward the Bahama Islands. Although observational data are lacking in the wavegeneration area, these swells were likely made larger as Isabel moved west over a long stretch of ocean in the direction of the strongest winds, producing a longer fetch. Th e large swells impacted the beaches of Eleuthra and Abaco Islands, shielding most of the southeast Florida coastline. However, between those two Bahama islands is the narrow but deep Providence Channel, and this allowed the large swells to propagate between the islands and ultimately into the southeastern Florida coast near Delray Beach, producing large surf of 10–14 ft (3.0–4.3 m).