The Determination of the Osmium Budget of the Oceans

海洋锇收支的确定

• 批准号: 0099231
• 负责人: Mukul Sharma
• 金额: $ 19.5万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2006-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099231&HistoricalAwards=false
• 关键词: Determination; Osmium; Budget; Oceans

The goals of this proposal are to understand the Os abundances and 187Os/188Os of the ocean as well as the fluxes of Os into and out of the oceans, needed to determine the geochemical budget of Os in the oceans, its residence time and the possible utility of Os data for paleoclimatic studies. Analyses will be carried out for hydrothermal fluids from Juan de Fuca, organic-rich black shales, tributaries of the Orinoco river, and Mn crusts and nodules in order to constrain the budget of Os in the oceans.

该提案的目标是了解海洋的Os丰度和187 Os/188 Os，以及Os流入和流出海洋的通量，需要确定海洋中Os的地球化学收支，其停留时间和Os数据在古气候研究中的可能效用。将对胡安·德富卡的热液流体、富含有机物的黑色页岩、奥里诺科河支流以及锰结壳和结核进行分析，以限制海洋中的锇预算。