OBSERVATIONS OF INTERNAL WAVE REFLECTION OFF SLOPING BOTTOMS
OBSERVATIONS OF INTERNAL WAVE REFLECTION OFF SLOPING BOTTOMS
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DOI：
10.1029/jc087ic01p00525
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发表时间：
1982-01-01
影响因子：
3.6
通讯作者：
ERIKSEN, CC
中科院分区：
文献类型：
--
作者：
ERIKSEN, CC
在以局部内波临界频率为中心的频带上，电流和温度谱在倾斜底部附近表现出增强和极化。例子取自各种岛屿、海山和大陆斜坡的观测。波浪从中深度向下传播，当它们从底部反射时，会改变能量密度、波数和方位角，从而对深海内部波谱产生自然扰动。偏离线性理论被解释为通过随后的剪切不稳定和/或非线性相互作用耗散的证据。地形特征似乎是内波能的能量汇。
Current and temperature spectra exhibit intensification and polarization near sloping bottoms over a band of frequencies centered at the local internal wave critical frequency. Examples are drawn from a variety of island, seamount, and continental slope observations. Waves propagating down from mid‐depth change energy density, wave number, and azimuth when they reflect off the bottom, providing a natural perturbation to the deep ocean interior internal wave spectrum. Deviations from linear theory are interpreted as evidence for dissipation through subsequent shear instability and/or nonlinear interaction. Topographic features appear likely to be energy sinks for internal wave energy.