Laboratory Simulation of Buoyancy Influenced Turbulent Mixing in the Ocean

在这个项目中，实验室实验将被用来确定稳定层结引起的浮力效应对热、盐和动量的湍流混合的定量影响。结果将被应用于解释海洋微结构测量和计算海洋模型。具体问题包括：根据Prandtl数、Vaisala频率、Richardson数、大尺度流动梯度和流动演变历史对湍流输送的参数化；背景或湍流产生的内波对混合和实测量的影响；以及二维和三维湍流混合的比较研究和对最近的理论尺度的评估。将使用的新的光学测量技术包括激光多普勒风速测量和激光诱导荧光。

In this project, laboratory experiments will be used to determine the quantitative influence of buoyancy effects due to stable stratification on turbulent mixing of heat, salt, and momentum. Results will be applied both to interpreting ocean microstructure measurements, and to computational ocean models. Specific problems include: parameterization of turbulent transport in terms of the Prandtl number, Vaisala frequency, Richardson number, large scale flow gradients and flow evolution history; the influence of background or turbulence-generated internal waves on mixing and measured quantities; and comparative studies of 2- versus 3-dimensional turbulent mixing and evaluation of recent theoretical scalings. New optical measurement techniques to be used include laser Doppler anemometry and laser-induced fluorescence.