Younger Dryas (?) Climatic Reversal in Western United States

地球历史上的年轻仙女木事件提供了一个重要的例子，说明气候的快速变化是由未知的外部原因造成的。因此，了解这种变化的机制将有助于评估影响气候的内部反馈。这项建议中概述的研究很重要，因为它将确定北美气候事件的地理范围。它的科学方法结合了已证实的和新的实验方法，用于精确测定古气候记录的年代，因此将有助于解决北美西部古气候记录中一些长期存在的和令人困惑的差异。

The Younger Dryas event in earth history provides an important example of a rapid climate change forced by no known external cause. Thus understanding the mechanisms for this change will help to evaluate the internal feedbacks affecting climate. The research outlined in this proposal is important because it will determine the geographic extent of the climatic event in North America. Its scientific approach combines proven and new, experimental methods for precise dating of paleoclimate records and therefore will help to resolve some long-standing and confusing discrepencies in the paleoclimate records of western North America.