| 摘要: |
| 采用海洋三维热结构及环流模式，模拟了黄海在M2潮流混合作用下，夏季温度的分布和变化特征．从数值研究的角度，对黄海陆架水域的海洋锋现象，诸如苏北浅滩外、山东半岛东端、大连、木浦水域的锋面以及锋面沿岸一侧的表层冷水区的成因及分布进行了探讨，模拟结果再现了黄海陆架锋的潮生性质。 |
| 关键词: 数值实验 黄海 潮混合 陆架锋 上升流 |
| DOI： |
| 分类号: |
| 基金项目:国家”八五”课题资助项目，85-903-08号 |
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| NUMERICAL SIMULATION OF TI-IE TIDE—INDUCED CONTINENTAL FRONT IN THE YELLOW SEA |
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QI Jian-hua,SU Yu-song
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Department of Physical Oceanography, Ocean University of Qingdao, Qingdao, 266003
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| Abstract: |
| The causes of summertime distribution and character of temperature in the Yellow Sea were studied, using a three-dimensional thermal and circulation numerical model. The temperature variation of seawater in summer due to the mixing effect of M2 tidal current in the Yellow Sea was simulated and compared with the temperature variation due to the mixing by summer average wind stress. The continental ocean fronts in the Yellow Sea, such as the fronts outside the Subei shallows, in the southeastern part of the Shandong Peninsula in the waters nearby Dalian and Mokpo as well as the surface cold water between the front and coast, were studied. The simulating results tallied with the surface temperature distribution observed by satellite remote sensing and reproduced the tide-induced character of continental fronts in the Yellow Sea.
The three-dimensional thermal and circulation model in the present paper was used for numerical simulation of tidal current in the Yellow Sea focused on the process of periodic tidal mixing of temperature due to the boundary force of M2 tide. The simulating results revealed not only the character of temperature distribution and variation in the tide-induced continental front areas of the Yellow Sea, but also the distribution of vertical tidal residual current for comparison with the distribution of temperature.
For embodying the effect of tidal mixing on water temperature variation, the simulation study did not consider the thermal exchange process at the sea surface and the salinity variation in the model. In summer, the solar radiation and sea surface thermal exchange processes are very strong, so the numerical results here were used to study in detail the mechanism of tidal mixing to ocean thermal structure. |
| Key words: Numerical simulation, Yellow Sea, Tidal mixing, Continental front, Upwelling |
