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IMPROVEMENT OF THE STABILITY OF THE ESTUARINE COASTAL OCEAN MODEL BY A PREDICTOR-CORRECTOR SCHEME
Author(s): 
Pages: 15-22
Year: Issue:  1
Journal: OCEANOLOGIA ET LIMNOLOGIA SINICA

Keyword:  河口海岸海洋模式预估修正法模式稳定性渤、黄、东海环流;
Abstract: 河口海岸海洋模式时间差分为欧拉前差格式,在涡动粘滞系数较小的情况下,模式存在着弱不稳定性.为提高模式的稳定性,采用预估修正法对模式中科氏力项作半隐式处理.首先在理论上证明了模式稳定性的提高,随后设计一个高分辨率网格,考虑实际岸线和水深、边界通量、密度梯度力和风应力,把模式应用于冬季渤、黄、东海环流的数值模拟,数值试验也证明了模式稳定性的提高.改进后的河口海岸海洋模式较成功地模拟出了冬季渤、黄、东海环流(黑潮、台湾暖流、对马暖流、黄海暖流和沿岸流),与实际观测和研究结果较为一致.
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