Collaborative Research: Tracing Paleoceanographic Sources of Fe to the Central Equatorial Pacific Ocean

合作研究：追踪中赤道太平洋铁的古海洋来源

• 批准号: 0137453
• 负责人: Sidney Hemming
• 金额: $ 2.96万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0137453&HistoricalAwards=false
• 关键词: Collaborative; Research; Tracing; Paleoceanographic; Sources

Summary: This proposal request support for a comprehensive chemical and isotopic survey (major, trace, and rare earth elements along with Sr, Nd and Pb isotopes) to test the hypothesis that the source of particulate Fe to central equatorial Pacific surface waters is the Papua New Guinea region via the eastward flowing Equatorial Undercurrent (EUC). In addition the study will assess whether wind blown material is more important as a source of particulate Fe at 4oN and 5-2oS than is PNG-derived Fe. The study will examine downcore variations in the EUC-sourced Fe through glacial-interglacial cycles, and examine whether changes can be correlated with changes of export production recorded in the sediments.

摘要：本提案要求支持全面的化学和同位素调查（主要元素、微量元素和稀土元素以及 Sr、Nd 和 Pb 同位素），以检验以下假设：赤道中部太平洋地表水中的颗粒铁来源是通过东流赤道潜流 (EUC) 的巴布亚新几内亚地区。 此外，该研究还将评估风吹材料作为 4oN 和 5-2oS 颗粒铁的来源是否比巴布亚新几内亚衍生的铁更重要。 该研究将通过冰期-间冰期循环研究 EUC 来源的铁的岩心变化，并研究变化是否与沉积物中记录的出口产量的变化相关。