ADVANCE Fellow: Evaluating the Importance of Lateral Transport on Alkenone Temperature Reconstructions in the late Quaternary

高级研究员：评估横向传输对第四纪晚期烯酮温度重建的重要性

• 批准号: 0340676
• 负责人: Elisabeth Sikes
• 金额: --
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2008-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0340676&HistoricalAwards=false
• 关键词: ADVANCE; Fellow; Evaluating; Importance; Lateral

This ADVANCE award provides funding for continued research on biomarker and isotopic (14C, 13C, 18O) analyses for paleoenvironmental and paleoceanographic applications. The PI will determine the applicability and continued usefulness of U37 as a paleotemperature estimator over a broad area of the world's oceans and investigate the 14C ages of alkenones from sedimentary environments representative of deep-sea locations where most paleooceanographic research has been conducted. The usefulness of sedimentary alkenones for detailed paleotemperature estimation and multi-proxy work has been recently brought into question by 14C evidence that post-deposition lateral transport may cause alkenones to be up to 7000 years older than foraminifera in the same deposit. Post-depotional lateral transport of fine-grained material may account for the differences. The PI will examine cores from two disparate oceanographic locations to determine if alkenones are suitable for paleotemperature estimation and multi-proxy work. The research will expand basic understanding of the interplay between carbon cycling, ocean circulation, and climate change.ADVANCE awards are intended to promote the careers of women in science at critical junctures. The PI has recently relocated to the U.S. and is rebuilding her career as a researcher and educator.

该 ADVANCE 奖项为古环境和古海洋学应用的生物标志物和同位素（14C、13C、18O）分析的持续研究提供资金。 PI 将确定 U37 作为世界海洋广大区域古温度估算器的适用性和持续有用性，并调查代表大多数古海洋学研究开展的深海位置的沉积环境中的烯酮的 14C 年龄。沉积烯酮对于详细古温度估计和多代理工作的有用性最近受到 14C 证据的质疑，这些证据表明沉积后横向迁移可能导致同一沉积物中的烯酮比有孔虫古老高达 7000 年。细粒材料沉积后的横向传输可能是造成差异的原因。 PI 将检查来自两个不同海洋位置的岩心，以确定烯酮是否适合古温度估算和多代理工作。该研究将扩大对碳循环、海洋环流和气候变化之间相互作用的基本了解。ADVANCE 奖项旨在在关键时刻促进女性在科学领域的职业生涯。这位 PI 最近移居美国，正在重建她作为研究员和教育家的职业生涯。