Collaborative Research: Eocene Orbital-scale Oceanographic Variability in the North Atlantic: Inferences from Expedition 342 Cores

合作研究：北大西洋始新世轨道尺度海洋变化：来自 Expedition 342 核心的推论

• 批准号: 1334306
• 负责人: Richard Norris
• 金额: $ 17万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-15 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1334306&HistoricalAwards=false
• 关键词: Collaborative; Research; Eocene; Orbital; scale

This proposal seeks to develop a high-resolution, astronomically-tuned time series for the Eocene based on the isotopic compositions of foraminfera obtained from cores drilled during IODP exp. 342 (Newfoundland Drifts). This series will fill a gap (Eocene Gap) in the cyclostratigraphic record and enable the development of a complete orbitally-resolved Cenozoic record. This is one of the primary objectives of exp. 342. This work will also enable the examination of orbital-scale response and sensitivity of the carbon cycle during the Eocene and by comparison with data obtained in the Pacific Ocean, determine whether or not events such as the deepening of the CCD were global in extent. The Eocene is a particularly critical time for climate studies as it spans the time between the early Cenozoic greenhouse and the later Cenozoic icehouse. The Eocene is a particularly critical time for climate studies as it spans the time between the early Cenozoic greenhouse and the later Cenozoic icehouse. The information provided by this work will help to constrain and evaluate the causes of global climate change at a particularly crucial time in Earth history.

该提案旨在开发一个高分辨率，天文调谐的始新世的有孔虫的同位素组成的基础上，从IODP实验期间钻取的岩心。342（纽芬兰漂流）。该系列将填补旋回地层记录中的空白（始新世空白），并使完整的轨道分辨新生代记录得以发展。这是exp的主要目标之一。342.这项工作还将有助于审查始新世期间碳循环的轨道尺度反应和敏感性，并通过与太平洋获得的数据进行比较，确定诸如《防治荒漠化公约》加深等事件是否具有全球范围。始新世是气候研究的一个特别关键的时期，因为它跨越了早期新生代温室和晚期新生代冰库之间的时间。始新世是气候研究的一个特别关键的时期，因为它跨越了早期新生代温室和晚期新生代冰库之间的时间。这项工作提供的信息将有助于在地球历史上一个特别关键的时期限制和评估全球气候变化的原因。