Paleoceanographic History of Intermediate and Deep Water Masses: Continental Margin, Western North Atlantic

该项目对美国东部大陆边缘的活塞芯进行了详细的沉积学、地球化学和微古生物学研究。结果将包括新的稳定同位素数据、海底有孔虫普查和计算机形状分析、有机碳分析、选定样品的C/N比测定以及来自大陆斜坡和隆起深度岩心的加速器碳-14测年。目标是将这一新信息整合到一个古海洋学/沉积学模型中，该模型将北大西洋西部边界的中等深水水团的动力学与该海洋第四纪晚期的深水盆地进行比较。了解北大西洋的古海洋学历史是很重要的，因为该地区的海洋过程和周围陆块的气候变化在世界范围内都有重大影响。古海洋学研究揭示了古气候。了解古气候、其演化及其与苍白海洋的联系可以帮助我们了解目前的海洋-气候相互作用。

This project is for a detailed sedimentological, geochemical, and micropaleontological study of piston cores from the continental margin of the eastern USA. The results will include new stable isotopic data, census and computerized shape analysis of benthic foraminifera, organic carbon analysis, determination of C/N ratios on selected samples and accelerator carbon -14 dating from cores at continental slope and rise depths. The goal is to integrate this new information into a paleoceanographic/sedimentologic model which compares the dynamics of intermediate depth water masses along the western boundary of the North Atlantic with the deep water basins of this ocean during the late Quaternary. %%% An understanding of the paleoceanographic history of the North Atlantic is important because oceanographic processes in this region and climatic changes on the surrounding land masses have major effects world-wide. Studies of paleoceanography shed light on paleoclimates. An understanding of paleoclimates, their evolution and ties to the pale ocean can help us understand present ocean-climate interactions.