Analysis of Lagrangian Turbulence Data

拉格朗日湍流数据分析

• 批准号: 9617671
• 负责人: Eric D'Asaro
• 金额: $ 64万
• 依托单位: University of Washington
• 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: 1997-06-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9617671&HistoricalAwards=false
• 关键词: Analysis; Lagrangian; Turbulence; Data

D Asaro 9617671 Turbulence is the upper ocean mixed layer will be examined by analyzing recently collected data consisting of neutrally buoyant float trajectories in both wind-driven and convectively-driven conditions, high-quality air-sea fluxes, surface wave spectra and temperature/salinity profiles. In addition to following the three-dimensional motion of water parcels, the floats also measure temperature, stratification and vertical vorticity. From these measurements, both Lagrangian and Eulerian profiles of Eckman velocity, turbulent kinetic energy and its components, turbulent dissipation rates, rms horizontal and vertical displacements will be calculated to see how they scale with surface fluxes and surface wave properties. A numerical model will also be used to investigate the use of Lagrangian floats for measuring heat flux and/or mixing rates.

D Asaro 9617671湍流是上层海洋混合层，将通过分析最近收集的数据进行研究，这些数据包括风驱动和对流驱动条件下的中性浮力浮子轨迹、高质量的海气通量、表面波谱和温度/盐度剖面。除了跟踪水体的三维运动外，浮标还测量温度、分层和垂直涡度。从这些测量，拉格朗日和欧拉的埃克曼速度，湍流动能及其组成部分，湍流耗散率，均方根水平和垂直位移的配置文件将被计算，看看他们如何缩放与表面通量和表面波特性。数值模型也将被用来调查使用拉格朗日浮子测量热通量和/或混合率。