Collaborative Research: P2C2--Cave Climate Histories of East/Central Asia: Deeper in Time, Wider Geographically, New Analytical Approaches, and New Tests of Climate Interpretations

合作研究：P2C2--东亚/中亚洞穴气候历史：更深入的时间、更广泛的地理、新的分析方法和气候解释的新测试

• 批准号: 1702407
• 负责人: Ian Orland
• 金额: $ 6万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1702407&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Cave; Climate

The project builds upon the researchers' previous research piecing together a 640,000-year long, high-resolution record of the oxygen isotopic composition of cave calcite from the region of China currently affected by Asian monsoon rainfall. The researchers aim to examine how the oxygen isotopic composition of cave calcite relates to climate using a series of tests. These analytical tests involve (1) obtaining records from different regions of Asia, (2) obtaining extremely high resolution seasonal records of oxygen isotopic composition over specific transitions in climate, and (3) measuring the Oxygen-17 anomalies in selected cave deposits. The proposed tests of the mechanisms whereby the oxygen isotopic composition of cave calcite responds to climate aim to help illuminate the fundamental processes that cause changes in the Asian Monsoon. This research is important because the Asian Monsoon affects millions of people and responds to regional insolation changes at orbital timescales and North Atlantic climate at millennial timescales. The project will allow the researchers to use the monsoon records as a window into high latitude climate. The broader impacts involve supporting an early career scientist, a postdoctoral scholar, a graduate student, and fostering mutually beneficial international collaborations.

该项目建立在研究人员之前的研究基础上，该研究拼凑了 64 万年之久的、目前受亚洲季风降雨影响的中国地区洞穴方解石氧同位素组成的高分辨率记录。 研究人员旨在通过一系列测试来研究洞穴方解石的氧同位素组成与气候的关系。 这些分析测试包括 (1) 获取亚洲不同地区的记录，(2) 获取特定气候转变期间氧同位素组成的极高分辨率季节性记录，以及 (3) 测量选定洞穴沉积物中的 Oxygen-17 异常。拟议的洞穴方解石氧同位素组成对气候响应机制的测试旨在帮助阐明导致亚洲季风变化的基本过程。 这项研究很重要，因为亚洲季风影响数百万人，并对轨道时间尺度的区域日照变化和千年时间尺度的北大西洋气候做出反应。该项目将使研究人员能够利用季风记录作为了解高纬度气候的窗口。 更广泛的影响包括支持早期职业科学家、博士后学者、研究生，以及促进互利的国际合作。