The Determination of the Osmium Budget of the Oceans

这一建议的目标是了解海洋中的Os丰度和187Os/188Os，以及Os进出海洋的通量，这是确定海洋中Os的地球化学收支、其停留时间以及Os数据在古气候研究中的可能用途所必需的。将对胡安德富卡、富含有机物质的黑色页岩、奥里诺科河支流以及锰结壳和结核中的热液进行分析，以限制海洋中Os的预算。

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.