The Coupling of Surface and Internal Gravity Waves: Revisited
The Coupling of Surface and Internal Gravity Waves: Revisited
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表面重力波和内部重力波的耦合：重温
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
K. Watson
中科院分区：
文献类型：
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作者：
K. Watson
本文对表面波产生内波的问题进行了新的研究。以前的理论被放入一个统一的形式，其中包括一个模型的表面波阻尼。使用完整理论进行的计算表明，在风速为7 ~ 20 m s−1时，内波场损失约10−4 W m−2到表面波场。这将导致衰减时间约为10天的内波场的高频部分，如果没有能源来维持它。这种能量的可能来源进行了讨论。与风浪的结果相反，强烈的高度准直的海洋涌浪会导致高频内波的快速增长。文中还讨论了非线性表面波调制和波阻塞的影响。
Abstract A new investigation is made of internal wave generation by surface waves. Previous theories are put into a unified form that includes a model of surface wave damping. Calculations using the complete theory, which do not seem to have been made previously, indicate that for wind speeds between 7 and 20 m s−1 the internal wave field loses about 10−4 W m−2 to the surface wave field. This would lead to a decay time of about 10 days for the high frequency portion of the internal wave field if an energy source were not available to maintain it. Possible sources for this energy are discussed. In contrast to this result for wind waves, a strong highly collimated ocean swell can lead to rapid growth of high frequency internal waves. The effects of nonlinear surface wave modulation and wave blocking are also discussed.