Response of the Eq. Pacific to Quaternary Climate Change: Sedimentary Chemical Evidence For Glacial-Interglacial Contrasts in Productivity and Chemical Transport Rate

方程的响应。

• 批准号: 9301097
• 负责人: Richard Murray
• 金额: $ 19.43万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-15 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301097&HistoricalAwards=false
• 关键词: Response; Eq.; Pacific; Quaternary; Climate

Response of the Eq. Pacific to Quaternary Climate Change: Sedimentary Chemical Evidence For Glacial-Interglacial Contrasts In Productivity, Chemical Transport Rate, and Terrigenous Influence Chemical indicators of productivity, chemical transport rate, and terrigenous flux will be used to determine the biogeochemical response of the central equatorial Pacific Ocean to Quaternary climate change. The strategy involves the analysis of downhole records along a latitudinal transect. Sedimentary chemistry will be done on 15 m long piston cores recovered at 2 degree S, 0 degree, 2 degree N, 5 degree N, along a transect at 140 degree W, thus covering the sharp equatorial gradients in productivity and associated depositional and diagenetic processes. Studies will also cover the effect of the dominant aeolian source of terrigenous particulate matter (the intertropical convergence of the tradewinds, at 5 degree N). Downhole sampling strategy will result in resolution of 7 ky for the past 1 Ma. Interactive behavior of the three major biogenic components (CaCO3, Corg, opal), the aeolion component, and an extensive suite 40 major, trace, and rare earth elements will be assessed.

等式的响应。太平洋至第四纪气候变化：冰川-间冰期在生产力、化学运移速率、和陆源影响化学生产力的指标，化学输运率，陆源通量将用于确定中赤道太平洋对第四纪气候变化的生物地球化学响应。该战略包括沿纬度横断面分析井下记录。将对15米长的S 2度、0度、2度北纬2度、5度北纬5度的活塞芯，沿西经140度的断面进行沉积化学研究，从而覆盖赤道生产力的急剧梯度及其相关的沉积和成岩作用。研究还将包括陆源颗粒物的主要风成源(信风在北纬5度的热带辐合)的影响。井下采样策略将导致过去1 Ma的分辨率为7Ky。将评估三种主要生物成分(CaCO3、Corg、蛋白石)、风成成分以及广泛的40种主要、痕量和稀土元素的相互作用行为。