Nonlinear Stratified Spin-up with Applications to Oceanic Upwelling, Frontogenesis and Subduction

非线性分层自旋及其在海洋上升流、锋生和俯冲中的应用

• 批准号: 0095971
• 负责人: Peter Rhines
• 金额: $ 26.88万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-15 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0095971&HistoricalAwards=false
• 关键词: Nonlinear; Stratified; Spin; up; Applications

0095971/RhinesThe project addresses two questions associated with the spin-up of rotating, stratified fluids like the ocean. The first concerns the effect of nonlinear coupling between the Ekman pumping induced by wind stress curl and the vorticity of the interior geostrophic flow generated by the Ekman pumping. The second concerns the generation of convective and inertial instabilities by the advection of horizontal density gradients in the Ekman layer by Ekman fluxes, together with the vertical mixing these instabilities produce. The work consists of the development and study of analytical and numerical models of three-dimensional representations of these phenomena together with experiments to reproduce these phenomena in the laboratory and to test the theoretical and numerical predictions. Numerical simulations will be extended to a model of coastal upwelling. The work builds on two-dimensional theoretical and numerical models of these processes.

0095971/Rhinesthe项目解决了与旋转，分层流体（如海洋）的旋转相关的两个问题。 首先是涉及风应力卷曲引起的Ekman泵送与Ekman泵送产生的内部地质流动的涡度之间的非线性耦合的影响。 第二个涉及通过Ekman Fluxes在Ekman层中水平密度梯度的对流以及这些不稳定性产生的垂直混合而产生的对流和惯性不稳定性。 这项工作包括这些现象的三维表示的分析和数值模型的开发和研究，以及实验中重现这些现象的实验并测试理论和数值预测。 数值模拟将扩展到沿海上升流的模型。 这项工作建立在这些过程的二维理论和数值模型的基础上。