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首页> 外文期刊>Journal of Physical Oceanography >Near-Inertial Waves and Turbulence Driven by the Growth of Swell
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Near-Inertial Waves and Turbulence Driven by the Growth of Swell

机译：由膨胀生长驱动的近惯性波浪和湍流

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摘要

Between 5% and 25% of the total momentum transferred between the atmosphere and ocean is transmitted via the growth of long surface gravity waves called "swell." In this paper, we use large-eddy simulations to show that swell-transmitted momentum excites near-inertial waves and drives turbulent mixing that deepens a rotating, stratified, turbulent ocean surface boundary layer. We find that swell-transmitted currents are less effective at producing turbulence and mixing the boundary layer than currents driven by an effective surface stress. Overall, however, the differences between swell-driven and surface-stress-driven boundary layers are relatively minor. In consequence, our results corroborate assumptions made in Earth system models that neglect the vertical structure of swell-transmitted momentum fluxes and instead parameterize all air-sea momentum transfer processes with an effective surface stress.
机译：在大气和海洋之间转移的总动量的5％和25％之间通过称为“膨胀”的长表面重力波的生长传播。在本文中，我们使用大涡模拟来表明膨胀传递的动力激发近惯性波浪，并驱动加深旋转，分层的湍流海面边界层的湍流混合。我们发现膨胀透射电流在产生湍流并使边界层混合而不是由有效表面应力驱动的电流。然而，总体而言，膨胀驱动和表面应力驱动的边界层之间的差异相对较小。结果，我们的结果证实了在忽视膨胀透射动量通量的垂直结构的地球系统模型中的假设，而是参数化所有带有有效表面应力的海运动量转移过程。

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