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由我国北方的寒潮或冷空气所引起的渤海风潮,按文献的分析,该属于“超浅海风暴潮”类型。以渤海风潮为例,按超浅海风暴潮理论进行数值计算,不仅对该理论是一有力的检验,且对探讨渤海风潮的机制和预报也是一个有益的参考。 将冷锋所造成的大风风场重现在计算网格上,在现场海面风资料极度贫乏的情况下,显然是一较难的课题。本文仅就发生渤海风潮时,渤海上空风场的几个主要力学特征,设计了几个理论模式风应力场,对渤海风潮进行了数值计算,以期获得全过程概貌及主要特征。计算结果达到了这一预期目的。
The Bohai Sea wave caused by cold or cold air in northern China, according to the literature analysis, belongs to the type of “super-shallow sea storm surge”. Taking the Bohai Sea wave as an example, the numerical calculation based on the super-shallow sea storm surge theory is not only a powerful test, but also a useful reference for exploring the mechanism and forecast of the Bohai Sea wave. It is obviously a difficult task to reproduce the windy wind field caused by the cold front on the computational grid. When the on-the-spot sea surface wind data is extremely scarce, In this paper, only several theoretical models of wind stress field in the Bohai Sea when the Bohai Sea wave occurs, several wind-induced stress fields are designed and the Bohai Sea wave is calculated numerically to get the whole process overview and main features. The calculated result meets this expectation.