超浅海风暴潮的数值模拟(一)——零阶模型对渤海风潮的初步应用
NUMERICAL MODELING OF AN ULTRA-SHALLOW WATER STORM SURGE(Ⅰ)
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摘要: 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.Abstract: Based on the three-dimensional zero-order model of the ultra-shallow water storm surge theory proposed by Qin and Feng(1975),a numerical investigation of the Pohai Sea wind tide is made. As a preliminary numerical experiment the model wind fields are designed for computations. Computational reauits are compared with the principal characteristics of observations as well as with some conclusions of the classical theories on storm surges presented lzy P. Groen (1962) and ethers.
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