Collaborative Research: FOCUS: Florida Current and Sea Level

该项目将调查佛罗里达沿海海平面变化与墨西哥湾流水和热输送变化之间的关系。为了实现这一目标，该项目将在佛罗里达和巴哈马之间的横截面上对流速、压力和声音信号进行现场测量。该项目的结果应有助于解释佛罗里达以及美国其他沿海地区“晴天”洪水加剧的原因。结果还应有助于阐明墨西哥湾流运输在区域尺度上的变化与全球尺度上的海洋运动和热含量之间的联系。调查人员将密切互动的一个县在东南部佛罗里达，是越来越频繁的洪水从ocean.This研究的影响，以了解墨西哥湾流运输的变化，在时间和流正常的方向，沿海海平面变化之间的关系的恢复力项目经理。墨西哥湾流输送变化和沿海海平面波动之间的解耦被假设为与整个佛罗里达海峡的质量负荷和热含量的变化模式有关;这些模式影响热输送和沿海海平面在不同的时间尺度;了解这些模式将提高对AMOC热输送和沿海洪水风险的理解。这些目标和假设将在5年内进行调查，在监测佛罗里达海流的运输电缆的纬度处测量海流、压力和反向回声测深仪（CPIES）。分析将把墨西哥湾流的跨岸变化与沿海海平面联系起来。这项研究可能有助于了解佛罗里达东海岸“晴天洪水”发生率的变化。调查结果将与迈阿密戴德县的复原力项目经理分享。该项目将支持开发新的CPIES能力，用于在浅水、动态场地部署。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The project will investigate the relationship between sea-level changes in coastal Florida and variations in Gulf Stream transport of water and heat. To address this goal, the project will use in-situ measurements of current velocity, pressure and sound signals as they travel throughout a cross-section between Florida and The Bahamas. Results of this project should help explain reasons for exacerbated 'sunny-day' flooding in Florida, and perhaps other coastal regions of the United States. Results should also help illuminate the linkage between variations in Gulf Stream transport at regional scales and ocean motions and heat content at global scale. Investigators will interact closely with resilience program managers of a county in southeast Florida that is affected by increasingly frequent flooding from the ocean.This study seeks to understand the relationship between Gulf Stream transport variability, in time and in the stream-normal direction, and coastal sea-level variability. Decoupling between Gulf Stream transport variations and coastal sea-level fluctuations is hypothesized to be related to modes of variability in mass loading and heat content across the Florida Straits; that these modes affect heat transport and coastal sea level at different time scales; and that understanding these modes will improve understanding of AMOC heat transport and coastal flood risk. These objectives and hypotheses will be investigated over 5 years with measurements of currents, pressure and inverted echosounders (CPIES) at the latitude of the transport cable that monitors the Florida Current. Analyses will relate cross-shore variability of the Gulf Stream to coastal sea level. The study might help understand the variability in incidence of 'sunny-day flooding' in the east coast of Florida. Results will be shared with the Miami-Dade County's resilience program manager. The project will support development of new CPIES capabilities for deployment in shallow, dynamic sites.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.