RUI: P2C2--Assessing the Influence of Extreme Rainfall Events on Australian Stalagmite Reconstructions of Tropical Cyclone Landfalls and the Indo-Australian Summer Monsoon

RUI：P2C2——评估极端降雨事件对热带气旋登陆澳大利亚石笋重建和印澳夏季风的影响

• 批准号: 1502917
• 负责人: Rhawn Denniston
• 金额: $ 14.96万
• 依托单位: Cornell College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1502917&HistoricalAwards=false
• 关键词: RUI; P2C2; Assessing; Influence; Extreme

This award generally aims to use cave systems and speleothems as natural archives of environmental conditions related to tropical cyclones and variations in ocean and atmospheric conditions. This research is important because it will help expand the scientific understanding of the nature and timing of past tropical cyclone activity, especially during periods of varying regional (i.e., Indo-Pacific sea surface temperature and Pacific temperature gradients) and extra-tropical (i.e., Northern Hemisphere temperature) climatic conditions. Since tropical cyclones are responsible for the majority of extreme rainfall events in some regions, an improved assessment of their dynamics can aid in developing models of long-term water budgets and storm-related risks. Investing in understanding tropical cyclones has significant economic and social returns in terms of saved lives and protected property. Furthermore, this award will advance research and education at a primarily undergraduate institution thereby providing an early experience for students in the conduct of research. Specifically, the research project will involve the installation of instruments to monitor meteorological, chemical, and hydrologic conditions at three caves spanning a near-coastal transect across northwestern Australia. Environmental variables (e.g., temperature, relative humidity, barometric pressure) in each cave will be integrated with meteorological and rainwater data (including rainfall amounts and stable isotopic compositions) collected at each site, along with the oxygen isotopic ratios of plate-grown spelean carbonate. These data will help develop a holistic understanding of cave responses, both hydrologic and isotopic, to extreme rainfall events such as those that characterize many tropical cyclones.

该奖项通常旨在利用洞穴系统和洞穴沉积物作为与热带气旋以及海洋和大气条件变化有关的环境条件的自然档案。这项研究很重要，因为它将有助于扩大对过去热带气旋活动的性质和时间的科学认识，特别是在不同区域（即，印度洋-太平洋海面温度和太平洋温度梯度）和热带外（即，北方温度）气候条件。由于热带气旋是造成某些地区大部分极端降雨事件的原因，因此，对其动态进行更好的评估有助于建立长期水预算和风暴相关风险的模型。 投资于了解热带气旋在挽救生命和保护财产方面具有重大的经济和社会回报。 此外，该奖项将推进研究和教育在一个主要的本科院校，从而为学生在进行研究的早期经验。具体来说，该研究项目将涉及安装仪器，以监测气象，化学和水文条件在三个洞穴跨越澳大利亚西北部的近海岸样带。环境变量（例如，将把每个洞穴中的温度、相对湿度、气压等数据与每个地点收集的气象和雨水数据（包括降雨量和稳定同位素组成）沿着板块生长的洞穴碳酸盐的氧同位素比率结合起来。 这些数据将有助于全面了解洞穴对极端降雨事件（如许多热带气旋的特征）的水文和同位素反应。