Elemental Tracers as Proxies of Productivity and Environmental Setting of the Southern Ocean

元素示踪剂作为南大洋生产力和环境设置的代表

• 批准号: 9530688
• 负责人: Jack Dymond
• 金额: $ 21.61万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-15 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530688&HistoricalAwards=false
• 关键词: Elemental; Tracers; Proxies; Productivity; Environmental

This project will analyze trace elements (Ba, Al, Ti, Fe and Mn) in particles that settle through waters of the Southern Ocean. These trace elements are hypothesized to be both tracers of ocean productivity and indicators of carbon transfer from the upper ocean to the deep ocean and the sediments. Some elements, particularly the ratio Al/Ti, may reflect productivity linked to siliceous plankton. Sequential leaching combined with statistical analyses will be used to identify the elements associated with different sediment components.

该项目将分析通过南大洋沃茨沉降的微粒中的微量元素（Ba、Al、Ti、Fe和Mn）。 这些微量元素被认为是海洋生产力的示踪剂，也是碳从上层海洋向深海和沉积物转移的指示剂。 某些元素，特别是Al/Ti比值，可能反映了与硅质浮游生物有关的生产力。 将采用连续沥滤法和统计分析相结合的方法来确定与不同沉积物成分有关的元素。