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首页> 美国政府科技报告 >Ocean Basins and Lakes, Turbulence Produced by Internal Waves in the OceanicThermocline at Mid and Low Latitudes
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Ocean Basins and Lakes, Turbulence Produced by Internal Waves in the OceanicThermocline at Mid and Low Latitudes

机译：海洋盆地和湖泊，中低纬度海洋热带内部波浪产生的湍流

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When mid-latitude internal waves are at the background state modeled by Garrettand Munk, wave-wave interactions transfer energy to dissipative scales so slowly that instabilities generate overturns not much larger than the scales at which viscosity dissipates the turbulence. Consequently, high wavenumber spectra contain only the viscous decay portion of the universal turbulent spectrum. Increases in low-wavenumber shear above background produce larger overturns and turbulence sufficiently intense to form well-developed inertial subranges. At low latitudes, internal wave shear is generally more intense than at mid latitudes, but the turbulence is similar to that found with mid-latitude waves at background. Dynamically, the anomaly implies that wave-wave interactions transfer energy to dissipative scales more slowly at low latitudes than at high latitudes. Kinematically, this anomaly results from steeper slope in the rolloff range.

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