RAPID: Collaborative Research: Using the Hurricane Michael Event Layer for Developing a Paleo-Tempestite Archive at Strandplain Swales, St. Vincent Island, Florida

RAPID：协作研究：使用迈克尔飓风事件图层在佛罗里达州圣文森特岛的 Strandplain Swales 开发古风暴岩档案

• 批准号: 1906071
• 负责人: Mead Allison
• 金额: $ 3.72万
• 依托单位: Tulane University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-12-15 至 2022-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1906071&HistoricalAwards=false
• 关键词: RAPID; Collaborative; Research; Using; Hurricane

The project is a rapid-response study of the Hurricane Michael event along the Florida Panhandle coast that experienced the most severe geomorphological impact of this high Category 4 storm in October 2018. Research will focus on collecting cores and samples from sediments deposited by Hurricane Michael on beach ridge swales of St. Joseph Island, Florida and in the area of the Florida Apalachicola Delta. These recently deposited sediments and deposits will have relevance to establishing possible reconstructions of hurricane events over the last ~3,000 years that have impacted this section of the Gulf Coast of the US. Further study of collected sediments and geomorphic changes will help provide detailed information about the frequency, intensity, and wind fields (i.e., direction of storm approach) of strong storms and hurricanes in the past. Broader impacts of the work include student training in rapid response sampling techniques and in providing information that can be used by coastal managers, residents, insurance companies and policy makers regarding the frequency and intensities of hurricanes in this part of the US Gulf Coast. The data collected may also allow inference as to the impacts of human and other environmentally-induced climate change on future hurricanes and the development of new and high-quality proxy records for understanding past storm events.Hurricane Michael, the strongest hurricane known to hit the Florida Gulf Coast, provides an opportunity to examine how a storm event layer (i.e., tempestite) is recorded in strandplain deposits. This research will sample Hurricane Michael deposits on St. Vincent Island, Florida and those in the wetlands of the Apalachicola Delta and adjacent mainland. Project objectives are to (1) map the characteristics (e.g., thickness, granulometry, primary sedimentary structures) of the Michael event layers in the study area as it is expressed across multiple subaerial swales, swale ponds, and coastal wetlands; (2) collect and sample cores of the Hurricane Michael event layer using procedures that will preserve the optically stimulated luminescence signature of the sand fraction; and (3) gather a comprehensive record of ancillary Hurricane Michael datasets from multiple sources (i.e., agencies and individual investigators). Goals are to build a dataset to allow construction of key spatio-temporal parameters shaping the morphological response of coastal systems, like St. Vincent Island, to major storms and how various parameters, such as wind field, storm surge level, wave field, and coastal currents evolved over the course of the storm. The Michael dataset will provide critical information that can aid in recognizing paleo-tempestites in the St. Vincent record, improve our understanding of how optically stimulated luminescence is expressed in hurricane tempestites, and allow calibration of hindcast models of process-geomorphological response that can reconstruct individual paleo-events.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.

该项目是对佛罗里达州潘汉德尔海岸飓风赛事活动的快速回应研究，该活动在2018年10月经历了这一高级4类风暴的地貌影响。研究将集中于收集岩心和样品，这些核心和样品从飓风迈克尔在弗洛里达的弗洛里达岛，弗洛里达，佛罗里达州和佛罗里达州的佛罗里达州和佛罗里达州的海滩山脊上，以及The Florida apalachachachiclachicola delta。这些最近沉积的沉积物和存款将与在过去的3000年中建立可能影响美国墨西哥湾沿岸这一部分的飓风事件的重建有关。对收集的沉积物和地貌变化的进一步研究将有助于提供有关强烈风暴和飓风的频率，强度和风场（即风暴进路的方向）的详细信息。这项工作的更广泛的影响包括在快速响应抽样技术方面的学生培训以及提供有关沿海经理，居民，保险公司和政策制定者可以使用有关飓风在美国墨西哥湾沿岸的频率和强度的信息。收集的数据还可以允许对人类和其他环境引起的气候变化对未来飓风的影响以及发展新的和高质量的代理记录的发展，以理解过去的暴风雨事件。 这项研究将在佛罗里达州圣文森特岛和阿帕拉奇科拉三角洲和邻近大陆的湿地进行采样。项目目标是（1）绘制研究区域迈克尔事件层的特征（例如，厚度，颗粒测定法，原始沉积结构），因为它遍布多个swales，Swale池塘和沿海湿地的多个下swales，swales层。 （2）使用将保留光学刺激的发光特征的飓风迈克尔事件层的样品核心； （3）从多个来源（即机构和个人调查人员）收集了辅助飓风迈克尔数据集的全面记录。目标是构建一个数据集，以允许构建关键时空参数，以塑造沿海系统（如圣文森特岛）的形态响应，以及大规模风暴，以及在风暴过程中如何演变的各种参数，例如风场，风暴浪潮水平，波浪场和沿海电流。 迈克尔数据集将提供关键信息，可以帮助识别圣文森特记录中的古介绍材料，以提高我们对飓风森林中光学刺激的发光方式表达的理解，并允许对过程 - 地球化学响应的校准模型的校准模型，从而可以通过评估nsf的构建宣言。优点和更广泛的影响审查标准。