Assessing the Role of the Vortical Mode in Small-Scale Ocean Dynamics: A Numerical Study

评估涡旋模态在小尺度海洋动力学中的作用：数值研究

• 批准号: 9521275
• 负责人: Marie-Pascale Lelong
• 金额: $ 21.51万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-15 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9521275&HistoricalAwards=false
• 关键词: Assessing; Role; Vortical; Mode; Small

Lelong OCE-9521275 A series of numerical studies (using a pseudo-spectral model) will be conducted to assess the role of vortical motions in the dynamics of the oceanic fine scale variability. The proposed work is divided into four tasks: (1) simulation of the breakdown of a near-inertial wave packet in a mean shear as a source of three-dimensional (3D) microscale turbulence; (2) study of the generation of a nonlinear component of vortical motion resulting from the decay of a 3D microscale turbulence event; (3) study of the 2D nature of stratified turbulence; and, (4) calculation of an effective horizontal diffusivity for a passive ocean tracer in the presence of small scale vortical motions.

将进行一系列数值研究（使用伪谱模式），以评估涡旋运动的作用 在 海洋微粒的动力学 尺度可变性 本文的工作分为四个方面：（1）模拟近惯性波包在平均切变中的破裂作为三维微尺度湍流源的过程：（2）研究三维微尺度湍流事件衰减产生的非线性涡运动分量;（3）研究二维分层湍流的性质;（4）计算小尺度涡旋运动下被动海洋示踪剂的有效水平扩散系数。