Collaborative Research: Reconstruction of Paleogene Alkenone-Based EP Records

合作研究：基于古近纪烯酮的 EP 记录重建

• 批准号: 0099061
• 负责人: Katherine Freeman
• 金额: $ 8.14万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-15 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099061&HistoricalAwards=false
• 关键词: Collaborative; Research; Reconstruction; Paleogene; Alkenone

Summary: This objective of this study is to provide estimates of long-term changes in atmospheric carbon dioxide concentrations from the Eocene through the Oligocene. The study will utilize carbon isotope measurement of alkenones and carbonate microfossils along with oxygen isotope measurements in carbonate microfossils. Measurements will be done on 6 discreet time slices representing the early, middle, and late Eocene and the early, middle and late Oligocene. Sample resolution will be approximately 250 to 500ky. In addition records will be established prior to and following distinct climatic episodes such as the Eocene/Oligocene transition and the apparent rapid deglaciation at the end of the Oligocene.

摘要：本研究的目的是提供从始新世到渐新世大气二氧化碳浓度的长期变化的估计。 该研究将利用烯酮和碳酸盐微化石的碳同位素测量以及碳酸盐微化石中的氧同位素测量。 测量将在代表始新世早、中、晚以及渐新世早、中、晚的 6 个离散时间片上进行。 样本分辨率约为 250 至 500ky。 此外，还将在不同的气候事件之前和之后建立记录，例如始新世/渐新世过渡和渐新世末期明显的快速消冰作用。