AMS Radiocarbon Measurements Aimed at Improving Our Understanding of the Events Associated With the Last Glacial Termination

了解气候变化、海洋 循环和碳循环是地球上 对古气候学家的挑战 之间的强烈反馈 这些系统会产生复杂的相互作用， 很难预测未来气候变化的趋势。 古气候学和古海洋学的研究有很大的 这是因为在最近的地质学中， 历史上，这些系统中的每一个都发生了巨大的变化。 14 C的分布提供了一个非常重要的示踪剂， 过去的碳循环，因为它的分布和浓度是 由碳循环过程和放射性衰变控制。 因此，可以通过 对过去14 C分布的明智测量。 这个目标 继续进行海洋沉积物的14 C年龄分析 进行各种具有古气候意义的研究 的 项目包括：1）深海溶解钙的研究 以确定海洋对快速变化的反应。 末次冰消期大气CO2的变化; 2） 表层水和深层水14 C差异的研究 以提高我们对循环反应的理解， 深海至末次冰消期;（3） 陆地和海洋事件的冰消年代学 与新仙女木期有关， 与末次冰消期有关的气候变化的证据 这 研究是重要的，因为它有可能提高 了解全球碳循环。

Understanding the relationship between climate change, ocean circulation and the carbon cycle is one of the greatest challenges for paleoclimatologists. The strong feedbacks between these systems result in complex interactions which make it difficult to predict the future course of climate change. Paleoclimatologic and paleoceanographic research has much to contribute to this research because, in recent geological history, large changes in each of these systems have occurred. The distribution of 14C provides one very important tracer of the past carbon cycle because its distribution and concentration is controlled by carbon cycles processes and radioactive decay. Thus it is possible to constrain the rates of change through the judicious measurement of past 14C distribution. The goal of this research is to continue the 14C age analysis of marine sediments on a variety of projects with paleoclimatic implications. The projects include: 1) studies of deep sea dissolution of calcium carbonate to determine the response of the ocean to the rapid change in atmospheric CO2 during the last deglaciation; 2) studies of the difference in 14C between surface and deep water to improve our understanding of the circulation response of the deep ocean to the last deglaciation; and 3) improvement of the deglacial chronology of both terrestrial and marine events associated with the Younger Dryas, a rapid, short-lived reversal of climatic change associated with the last deglaciation. This research is important because of its potential for enhanced understanding of the global carbon cycle.