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

题目：AMS放射性碳测量旨在提高我们对末次冰期终止相关事件的理解该项目的目的是更多地了解14500至9500年前地球从完全冰期到完全间冰期条件的气候变化的性质。涉及两个方面。由于向高纬度地区的热输送严重依赖于深海通风的模式和速率，我们需要更多地了解古环流。对深海沉积物中共存的浮游和底栖有孔虫的放射性碳测量提供了重要的，但大部分尚未开发的信息。其次，海洋环流可能在海因里希层1号（14300 - 14C年前）和博林层开始（12700 - 14C年前）之间停止。越来越多的证据表明，在这段时间间隔内发生了一次明显的跨美国潮湿事件，其模式与厄尔尼诺现象类似。

Abstract ATM-9416597 Broecker, Wallace S. Columbia University Title: AMS Radiocarbon Measurements Aimed at Improving Our Understanding of the Events Associated with the Last Glacial Termination The objective of this project is to learn more about the nature of the climate changes which brought the Earth from full glacial to full interglacial conditions between 14,500 and 9,500 14C years ago. Two aspects are addressed. As heat transport to high latitudes depends critically on the pattern and rate of deep sea ventilation we need to learn more about paleo circulation. Radiocarbon measurements on coexisting planktic and benthic foraminifera from deep sea sediments offer important and as yet largely untapped information. Second, ocean circulation may have ceased between Heinrich layer #1 (14,300 14C years ago) and the onset of the Bolling (12,700 14C years ago). Evidence is accumulating that a pronounced trans-USA wet event following the pattern seen during El Ninos occurred during this time interval.