渤海风暴潮概况及温带风暴潮数值模拟
The general status of storm surges and the simulation of extratropical storm surges in the Bohai Sea
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摘要: 分析研究表明,天津沿海是世界上风暴潮最频发区和最严重的区域之一,风暴潮灾一年四季均有发生,除夏季有台风风暴潮灾害发生外,春、秋、冬季均有灾害性温带风暴潮发生.采用球坐标系下的二维风暴潮模式,对1969年4月23日引起渤海最大温带风暴增水过程进行了数值模拟.对风场和增水过程的计算结果验证表明,该模式可用于温带风暴潮的工程计算,并且只要依据文中方法计算出预报气压场和风场,该模式也具有预报能力.Abstract: The analyses and investigations indicate that the frequency of storm surge of Tianjin coastal area is the highest and its disaster is the most severe in the world.The disaster of storm surge happens in fourseasons in which the disaster of extratropical storm surge occurs in spring,autumn and winter except the disaster of typhoon surge happens in summer.The 2-D model in geographical coordinates has been used to simulate the highest case of extratropical storm surge in the Bohai Seawhich happened in 23 April 1969.The verification of calculated wind field and the time variation of storm surge in several tidal gauge stations indicates that the model can be used to do the engineering calculations of the extratropical storm surge,and the model has an ability to do the real-time prediction of storm surges.
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Key words:
- Bohai Sea /
- storm surge /
- numerical simulation
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