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.

该奖项通常旨在将洞穴系统和棘皮动物用作与热带气旋有关的环境条件的自然档案，以及海洋和大气条件下的变化。这项研究很重要，因为它将有助于扩展对过去热带气旋活动的性质和时机的科学理解，尤其是在不同的区域（即印度太平洋海面温度和太平洋温度梯度）和热带外（即北半球温度）的时期。由于热带气旋是某些地区大多数极端降雨事件的原因，因此对其动态的改进评估可以帮助开发长期水预算和与风暴有关的风险的模型。 在理解热带气旋方面的投资在挽救生命和保护财产方面具有巨大的经济和社会回报。 此外，该奖项将在主要的本科机构中推进研究和教育，从而为学生提供研究的早期体验。具体而言，该研究项目将涉及安装仪器，以监测遍布澳大利亚西北部近乎沿层面的三个洞穴的气象，化学和水文条件。每个洞穴中的环境变量（例如，温度，相对湿度，气压）将与在每个部位收集的气象和雨水数据（包括降雨量和稳定的同位素组合物）以及氧气同位素比的氧气同位素比，将其与气象和雨水数据（包括降雨量和稳定的同位素组成）集成在一起。 这些数据将有助于对水文和同位素的洞穴反应进行整体理解，以对极端的降雨事件，例如表征许多热带气旋的事件。