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

摘要：本提案要求支持一项全面的化学和同位素调查（主要、痕量和稀土元素以及Sr、Nd和Pb同位素），以验证通过向东流动的赤道暗流（EUC）进入赤道太平洋中部地表水的颗粒铁的来源是巴布亚新几内亚地区的假设。此外，该研究将评估风吹材料作为4oN和5-2o颗粒铁的来源是否比来自png的铁更重要。该研究将通过冰期-间冰期旋回来研究欧陆源铁的下核变化，并研究这些变化是否与沉积物中记录的出口产量变化有关。

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.