Revisiting the Generation of Internal Waves by Resonant Interaction with Surface Waves
Revisiting the Generation of Internal Waves by Resonant Interaction with Surface Waves
复制标题
重新审视与表面波共振相互作用产生内波
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
C. Eden
中科院分区：
文献类型：
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作者：
D. Olbers;C. Eden
两个表面波通过非线性共振耦合作用可以相互作用产生重力内波。这个过程被称为自发创造（SC），因为它在最初不存在内波的情况下运行。先前的研究表明，所产生的内波具有接近本地Brunt-Vaisala频率的高频率和远大于参与表面波的波长，并且与其他生成过程相比，能量到内波场的光谱传递率很小。本分析的目的是提供一个由表面-内波相互作用传递到内波场的能量的全球地图，根据现实的风-海谱（取决于风速），混合层深度和混合层以下的分层，从最先进的数值海洋模式中获得，发现总共约为10−3 TW。与以前的计算的光谱传输率的基础上的垂直模式德…
AbstractTwo surface waves can interact to produce an internal gravity wave by nonlinear resonant coupling. The process has been called spontaneous creation (SC) because it operates without internal waves being initially present. Previous studies have shown that the generated internal waves have high frequency close to the local Brunt–Vaisala frequency and wavelengths that are much larger than those of the participating surface waves, and that the spectral transfer rate of energy to the internal wave field is small compared to other generation processes. The aim of the present analysis is to provide a global map of the energy transfer into the internal wave field by surface–internal wave interaction, which is found to be about 10−3 TW in total, based on a realistic wind-sea spectrum (depending on wind speed), mixed layer depths, and stratification below the mixed layer taken from a state-of-the-art numerical ocean model. Unlike previous calculations of the spectral transfer rate based on a vertical mode de...