Coastal communities are vulnerable to sea-level rise and hurricane-induced flooding. Our ability to assess flooding risk at coastal locations is restricted by the short observational record and limited knowledge on storm surge generation during hurricanes of different strength, size and orientation. Here, we present a transect of sediment cores collected from a blue hole near Middle Caicos in the Turks & Caicos Islands. Storm deposits found across cores in the transect record the passage of hurricanes passing to the south of Middle Caicos over the past 1500 years including Hurricane Irma in 2017. The record indicates historically unprecedented multi-decadal periods of elevated storm strikes on the island. We add this new reconstruction to a compilation of near-annually resolved paleohurricane records of the past millennium in The Bahamas. This compilation indicates increased storm activity in The Bahamas from 650 to 800 CE, 930 to 1040 CE, and 1400 to 1800 CE. Taken together with compilations of published paleohurricane records from New England and the Gulf Coast of Florida, we observe periods of elevated hurricane activity in all three spatially disparate regions over the past millennium and periods when New England and the Bahama Archipelago are active while the Gulf Coast of Florida is not. We argue that both regional-scale changes in vertical wind shear patterns and shifting storm tracks may explain the discrepancies we observe between different regions of the North Atlantic. This research informs how hurricane frequency has changed over the past 1500 years specifically in the Turks & Caicos Islands and regionally along the Bahama Archipelago.

沿海社区容易受到海平面上升和飓风引发的洪水的影响。我们评估沿海地区洪水风险的能力受到短期观察记录和对不同强度、规模和方向的飓风期间风暴潮产生的有限了解的限制。在这里，我们展示了从特克斯和凯科斯群岛中凯科斯群岛附近的一个蓝洞收集的沉积岩芯样带。横断面岩心中发现的风暴沉积物记录了过去 1500 年中凯科斯群岛南部的飓风经过，包括 2017 年的飓风艾尔玛。 该记录表明该岛经历了前所未有的数十年风暴袭击。我们将这个新的重建添加到巴哈马过去千禧年近年解决的古飓风记录的汇编中。该汇编表明，从公元 650 年到公元 800 年、公元 930 年到公元 1040 年和公元 1400 年到公元 1800 年，巴哈马的风暴活动有所增加。结合新英格兰和佛罗里达州墨西哥湾沿岸已发表古飓风记录的汇编，我们观察到过去千年中所有三个空间不同地区的飓风活动加剧时期，以及新英格兰和巴哈马群岛活跃而墨西哥湾沿岸的时期佛罗里达州不是。我们认为，垂直风切变模式的区域尺度变化和风暴轨迹的移动可以解释我们在北大西洋不同地区之间观察到的差异。这项研究揭示了飓风频率在过去 1500 年中的变化，特别是在特克斯和凯科斯群岛以及巴哈马群岛沿线地区。