Climate variability in the North Atlantic since 3 Ma in a stratigraphic framework using stable isotopes and relative paleointensity

使用稳定同位素和相对古强度的地层框架中北大西洋自 3 Ma 以来的气候变化

• 批准号: 0850413
• 负责人: James Channell
• 金额: $ 16.88万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0850413&HistoricalAwards=false
• 关键词: Climate; variability; North; Atlantic; since

This work will produce a stratigraphic template of Pleistocene climate change in the North Atlantic over the past 3 million years. Working with colleagues in the UK, the PI will generate and correlate high-resolution stable isotope and paleo-magnetic intensity records along a proximal to distal transect from the mouth of the Labrador Sea across the belt of detritus left by ancient ice-rafting events in the North Atlantic. The project will document millennial-scale variability in ice-rafting, ocean circulation, and geomagnetic properties with the goal of addressing important questions about the evolution of the Earth's climate during a critical period of transition (the mid-Pleistocene transition) and mechanisms for abrupt climate change. In addition, the results will provide a stratigraphic framework for the broader scientific community studying climate change in the North Atlantic. Further broader impacts of this work include international partnership and student exchange with NERC-funded UK scientists.

这项工作将在过去300万年内生成北大西洋更新世气​​候变化的地层模板。与英国的同事合作，PI将产生并关联高分辨率的同位素和古磁强度记录，沿着近端到远端从拉布拉多海的口到远端到远端，穿过偏僻的碎屑腰带，而古老的碎屑腰带则由古老的冰上冰上的事件留下。北大西洋。该项目将记录千禧一代的冰镇循环，海洋循环和地磁特性的可变性，其目的是解决有关在过渡的关键时期（中期过渡期）和突然突然的机制，以解决有关地球气候演变的重要问题气候变化。此外，结果将为研究北大西洋的气候变化的更广泛的科学社区提供地层框架。这项工作的进一步更广泛的影响包括国际伙伴关系和与NERC资助的英国科学家交流。