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: 1334209
• 负责人: James Zachos
• 金额: $ 10.3万
• 依托单位: University of California-Santa Cruz
• 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=1334209&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.

该提案旨在根据 IODP 实验期间钻取的岩心获得的有孔虫同位素组成，开发始新世的高分辨率、天文调谐时间序列。 342（纽芬兰漂流）。该系列将填补旋回地层记录中的一个空白（始新世间隙），并能够开发完整的轨道解析新生代记录。这是exp的主要目标之一。 342. 这项工作还将能够检查始新世期间碳循环的轨道尺度响应和敏感性，并通过与在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性。始新世对于气候研究来说是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室之间的时间。始新世对于气候研究来说是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室之间的时间。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刻限制和评估全球气候变化的原因。