The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea

ZHOU Xiao-bing; ZHANG Yan-ting; ZENG Qing-cun

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ZHOU Xiao-bing, ZHANG Yan-ting, ZENG Qing-cun. The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea[J]. Haiyang Xuebao, 2002, 24(2): 20-29.

Citation:

ZHOU Xiao-bing, ZHANG Yan-ting, ZENG Qing-cun. The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea[J]. Haiyang Xuebao, 2002, 24(2): 20-29.

ZHOU Xiao-bing, ZHANG Yan-ting, ZENG Qing-cun. The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea[J]. Haiyang Xuebao, 2002, 24(2): 20-29.

Citation:

ZHOU Xiao-bing, ZHANG Yan-ting, ZENG Qing-cun. The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea[J]. Haiyang Xuebao, 2002, 24(2): 20-29.

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The interface waves of thermocline excited by the principal tidal constituents in the Bohai Sea

1.
Department of Geophysics, Peking University, Beijing 100871, China
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
The Institute of Atmospheric Physics, Chinese Academy of Sciences,Beijing 100080, China

Received Date: 2000-06-06
Rev Recd Date: 2001-10-08

Abstract

Abstract

In this study,interface waves of thermocline layer are simulated by the model in the Bohai Sea.The waves are excited by tidal oscillation.The numerical model is three-dimensional nonlinear.In the vertical direction,the sea is separated into three layers,namely,upper mixing layer,thermal layer and lower mixing layer.Four principal tidal components,which are M₂,S₂,K₁,O₁ are considered in the model.So the surface waves are tidal ones.Not only the temporal varied internal waves have been analyzed,but time-mean values of them,which are called undulation in the paper,have been did.The result shows that the wave of the thermocline is consistent with observations.The waves in the upper and lower surface of thermocline are different in the phase,amplitude,even period in many places.The interface waves of large amplitude occur in the areas with a convex coastline and complex variation of depth.Compared with tidal residual elevation,the undulations of thermocline are larger.And higher absolute values also lie in the near coastline and the areas with complex topography.The bottom friction and topography play a major role for the undulation and interface-wave height.
- tide,
- mean current,
- thermocline,
- fluctuation and the undulation

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References(23)

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