Observations of a Kelvin-Helmholtz billow in the ocean

被引:0
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作者
Li H. [1 ]
Yamazaki H. [1 ]
机构
[1] Department of Ocean Sciences, Tokyo University of Fisheries
关键词
Kelvin-Helmholtz billow; Length scale; Shear instability;
D O I
10.1023/A:1021284409498
中图分类号
学科分类号
摘要
We identified a Kelvin-Helmholtz billow from vertical turbulence velocity and instantaneous heat flux signals obtained from airfoil shear probes and thermistors mounted on a research submarine. The vertical turbulence velocity indicates that the horizontal scale of the billow was about 3.5 m. The spectral slope of the vertical turbulence velocity component is close to -2, revealing the flow is two-dimensional. We show a remarkable agreement between the length scales of the observed billow and those computed from direct numerical simulations based on similar conditions.
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页码:709 / 721
页数:12
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