Tracer Based Examination of Halocline and Fresh Water Exchange in the Western Arctic

基于示踪剂的北极西部盐跃层和淡水交换检查

• 批准号: 9815707
• 负责人: Kelly Falkner
• 金额: $ 17.92万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-15 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9815707&HistoricalAwards=false
• 关键词: Tracer; Based; Examination; Halocline; Fresh

ABSTRACTOPP-9815707FALKNER, KELLYOREGON STATE UNIVERSITYThe investigator will examine the presence of barium in the water and sediment in the Beaufort Sea as a tracer for river sources of particles that are carried off the continental shelf by oceanographic currents. The barium tracer has been shown to be an effective tracer for determining exchange processes between coastal and basin regions and, as such, will be an excellent way to examine the pathways and exchange rate of carbon from the productive continental shelf to the deep basin. The investigator will examine water samples and sediment-trap sediments for barium and use the measurements in a model to reveal offshore circulation patterns in the Arctic Ocean. Continued development of a new instrument for a barium analyzer that can be used to measure barium from a ship. The project forms an important component of the Shelf-Basin Interaction project which is designed to examine the processes that control the transport of carbon from the biologically productive Arctic Ocean continental shelf to the deep basin. The results of this project will provide input for planning a large Phase 2 field program of the Shelf Basin Interactions project in 2002 in the same geographic area.

福克纳，凯利俄勒冈州立大学研究员将研究波弗特海的水和沉积物中钡的存在，作为海洋洋流带离大陆架的河流颗粒来源的示踪剂。钡示踪剂已被证明是确定沿海和盆地区域之间交换过程的有效示踪剂，因此，它将是检查从生产性大陆架到深盆地的碳的途径和交换速率的极好方法。研究人员将检查水样和沉积物捕集器沉积物中的钡，并在一个模型中使用测量结果来揭示北冰洋的近海环流模式。继续开发一种新的钡分析仪，可用于从船上测量钡。该项目是大陆架-盆地相互作用项目的一个重要组成部分，该项目旨在研究控制碳从具有生物生产力的北冰洋大陆架向深海盆运输的过程。该项目的结果将为规划2002年在同一地理区域的陆架盆地相互作用项目的大型第2阶段实地方案提供投入。