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

北大西洋冰川浮游和底栖氧同位素的快速变化

• 批准号: 0081760
• 负责人: Jerry McManus
• 金额: $ 29.51万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0081760&HistoricalAwards=false
• 关键词: Rapid; Changes; Planktic; Benthic; Oxygen

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.

总结：这个ESH项目将开发一个高分辨率的记录（100年的间隔），从冰岛南部的一个站点，跨越过去65 000年的沉积物样品中的地表水和底层水地球化学。 其目标是评估在这个网站的事件的时间和阶段相比，报告的伊比利亚边缘，海底事件推断发生在表面的约500年前的一个网站。 对两个地点的表层水和底层水之间的事件发生时间进行比较，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这一假设。