Numerical Studies of Negative Bouyancy-Induced Thermohaline Circulation on Arctic Continental Shelves

北极大陆架负浮力引起的温盐环流的数值研究

• 批准号: 9113940
• 负责人: Glen Gawarkiewicz
• 金额: $ 33.37万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-15 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9113940&HistoricalAwards=false
• 关键词: Numerical; Studies; Negative; Bouyancy; Induced

This proposal is part of a systematic study of the Arctic environment and its role in global change which is promoted by NSF's Arctic System Science Program. It is a three year project to understand the dynamics of the thermohaline circulation associated with surface salinity fluxes by applying a numerical model in a sequence of process-oriented studies. Surface cooling and brine rejection during ice formation lead to large surface salinity fluxes in many areas of the Arctic Ocean, particularly over the continental shelves. This negative buoyancy input increases the water density to such an extent that it may sink to the bottom and induce thermohaline circulation patterns with may generate dense-water bottom currents in the form of plumes. Such dense-water plumes may transport shelf water across the shelf and deposit it into the deep Arctic basins, thus contributing to the large-scale Arctic circulation.

这一提议是对北极进行系统研究的一部分 环境及其在全球变化中的作用， 美国国家科学基金会的北极系统科学计划。 这是一个三年 了解温盐动态的项目 与表层盐度通量有关的环流， 在一系列面向过程的 问题研究 结冰期间的表面冷却和盐水排除 形成导致大的表面盐度通量在许多 北冰洋地区，特别是在大陆 货架 这种负浮力输入增加了水 密度达到一定程度，它可能会下沉到底部， 诱导温盐环流模式 羽状的密水底流。 等 密集的水羽流可能会将陆架水输送到 并将其存款到北极盆地深处， 形成了大规模的北极环流