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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Vertical structure of turbulence on the southern flank of Georges Bank
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Vertical structure of turbulence on the southern flank of Georges Bank

机译：乔治银行南翼湍流的垂直结构

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Microstructure and acoustic Doppler current profiler measurements were taken at two sites on Georges Bank: in a shallow (45 m) well-mixed region on top of the bank and in a deeper (75 m) more stratified region on the southern flank. Each site was visited twice, April 25 to May 3, 1995, and June 6-16, 1995. At both sites the dominant variability in the turbulent kinetic energy dissipation rates was related to the semidiurnal M-2 tide. In the well-mixed lower portions of the water column a phase delay was observed between a arid the current speed. The delay increased with height above the bottom. There was also a depth-dependent phase delay in the square of the vertical shear of horizontal velocity, S-2, of the M-2 component. This phase lag has a depth dependence similar to that found for epsilon, which suggests that the turbulent mixing is locally generated by the current shear, as opposed to having propagated from the boundary. [References: 19]
机译：在乔治银行的两个位置进行了微结构和声学多普勒电流剖面仪的测量：在银行顶部的浅（45 m）充分混合区域和南部侧面更深的（75 m）分层区域。每个站点分别在1995年4月25日至5月3日和1995年6月6日至16日进行了两次访问。在这两个站点，湍动能耗散率的主要变异性与半日M-2潮汐有关。在水柱下部充分混合的地方，在当前速度和转速之间观察到相位延迟。延迟随着底部上方的高度而增加。在M-2分量的水平速度S-2的垂直剪切力平方中也有一个与深度有关的相位延迟。该相位滞后具有与ε相似的深度依赖性，这表明湍流混合是由电流剪切局部产生的，而不是从边界传播。 [参考：19]

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