Isotopic Tracers of Particle Scavenging in a Hydrothermal Plume near the Rodriguez Triple Junction, Indian Ocean

印度洋罗德里格斯三重交界处附近热液羽流中粒子清除的同位素示踪剂

• 批准号: 0114544
• 负责人: Henrietta Edmonds
• 金额: $ 4.91万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-15 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0114544&HistoricalAwards=false
• 关键词: Isotopic; Tracers; Particle; Scavenging; Hydrothermal

The principal investigator will participate in a UK-funded research cruise to study a hydrothermal plume above the Central Indian Ridge immediately north of the Rodrigues Triple Junction in the Indian Ocean. Large-volume water samples will be collected for particulate and dissolved thorium isotope studies. Thorium will enable the quantification of rates of chemical processes occurring on particles within this hydrothermal plume. The study also will investigate the processes controlling the geochemical fractionation of 230Th and 231Pa.

首席调查员将参加联合王国资助的一次研究航行，研究印度洋罗德里格斯三联点以北中印度洋脊上方的热液羽流。 将收集大量水样，用于微粒和溶解钍同位素研究。 钍将能够量化热液羽流中颗粒上发生的化学过程的速率。 本研究还将探讨230Th和231Pa地球化学分馏的控制过程。