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

这项工作将产生北大西洋过去300万年更新世气候变化的地层模板。PI将与英国的同事合作，生成并关联高分辨率稳定同位素和古磁场强度记录，该记录沿着一条从拉布拉多海河口到远侧的近端断面，穿过北大西洋古代冰漂流事件留下的碎屑带。该项目将记录冰筏漂流、海洋环流和地磁特性的千年尺度变化，目的是解决关键过渡期（中更新世过渡期）地球气候演变和气候突变机制的重要问题。此外，研究结果将为更广泛的科学界研究北大西洋气候变化提供地层框架。这项工作的更广泛的影响包括与NERC资助的英国科学家的国际伙伴关系和学生交流。

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.