DO WE REALLY KNOW HOW TO SCALE THE TURBULENT KINETIC-ENERGY DISSIPATION-RATE-EPSILON DUE TO BREAKING OF OCEANIC INTERNAL WAVES
DO WE REALLY KNOW HOW TO SCALE THE TURBULENT KINETIC-ENERGY DISSIPATION-RATE-EPSILON DUE TO BREAKING OF OCEANIC INTERNAL WAVES
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DOI：
10.1029/jc095ic09p15971
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发表时间：
1990-09-15
影响因子：
3.6
通讯作者：
GARGETT, AE
中科院分区：
文献类型：
--
作者：
GARGETT, AE
本文对最近的一项主张（Gregg, 1989）提出了质疑，该主张认为已经实现了对内波和湍流之间联系的一阶理解。结果表明：(1)该结果的理论基础对关于波能被传递到耗散（湍流）的波长性质的特别假设极为敏感；(2)Gregg（1989）用于计算瞬时波场能级的方法是不正确的，并且在大于egm的情况下会严重低估GM （Garrett and Munk, 1975）正则内波场的能级；(3) Gregg（1989）报告的数据集中f和浮力频率N的变化范围不足以排除替代标度。
This paper questions a recent claim (Gregg, 1989) that a first‐order understanding of the link between internal waves and turbulence has been achieved. It is demonstrated that (1) the theoretical basis of this result is extremely sensitive to an ad hoc assumption about the nature of the wavelength at which wave energy is delivered to dissipation (turbulence), (2) the method used by Gregg (1989) to calculate instantaneous wave field energy levelEis incorrect and will seriously underestimateEin cases whereEis greater thanEGM, the energy level of the GM (Garrett and Munk, 1975) canonical internal wave field, and (3) the range of variation ofEand buoyancy frequency N in the data sets reported by Gregg (1989) is not sufficient to rule out alternative scalings.