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

该ADVANCE奖为生物标志物和同位素（14C, 13C, 18O）分析在古环境和古海洋学应用方面的持续研究提供资金。PI将确定U37作为世界海洋广大地区古温度估算器的适用性和持续有效性，并调查来自具有代表性的深海沉积环境的烯酮的14℃年龄，大多数古海洋研究都在这些沉积环境中进行。沉积烯酮在详细古地温估算和多代工作中的作用最近受到了质疑，因为14C证据表明，沉积后的侧向运输可能导致烯酮比同一沉积层中的有孔虫早7000年。沉积后细粒物质的侧向搬运可能是造成这种差异的原因。PI将检查来自两个不同海洋学位置的岩心，以确定烯酮是否适合于古温度估算和多代理工作。这项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认识。ADVANCE奖旨在在关键时刻促进女性在科学领域的职业发展。这位PI最近搬到了美国，正在重建她的研究和教育事业。

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.