Rapid Changes in Planktic and Benthic Oxygen Isotopes in the Glacial North Atlantic

摘要：该ESH项目将在冰岛南部一个地点的沉积物样品中创造高分辨率的地表水和底水地球化学记录(间隔100年)，时间跨度跨越过去65,000年。目标是评估该地点发生事件的时间和阶段，与报告的伊比利亚边缘地点的事件相比较，那里的海底事件被推断为比地表事件发生的时间早约500年。对这两个地点表层和底层水事件的时间进行比较，将检验北大西洋快速气候变化是由冰盖融化导致的全球海平面变化驱动的假设。

Summary: This ESH project will develop a high-resolution record (100 year intervals) of surface and bottom water geochemistry in sediment samples from a site south of Iceland, spanning the last 65,000 years. Th goal is to assess the timing and phase of events at this site compared to those reported for a site on the Iberian margin, where benthic events are inferred to have occurred before surface ones by about 500 years. Comparison of the timing of events between surface and bottom water at both sites will test the hypothesis that rapid climate changes in the North Atlantic were driven by global changes in sea level resulting from melting ice sheets.