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本文用三维斜压陆架海模式对渤海温度的季节性变化进行了研究。模式较好地再现了渤海温度场从混合到层化至再混合的季节性变化过程；在混合区与层化区之间有一冷水带；夏季，３个湾的湾顶和秦皇岛外海的海表层温度（ＳＳＴ）相对较高，后者与秦皇岛外海较弱的风和潮混合有关；ＳＳＴ、温跃层及潮锋位置的变化与气象外力和潮运动有关，具有天气尺度和大小潮变化的特征。
In this paper, the seasonal changes of Bohai Sea temperature are studied by using three-dimensional baroclinic shelf sea model. Mode reproduces the seasonal variation of Bohai Sea temperature field from mixing to stratification to remixing well; there is a cold water zone between the mixing area and stratification zone; in summer, the top of 3 Bay and the outer surface of Qinhuangdao sea surface The temperature (SST) is relatively high, which is related to the weak wind and tide mixing in the offshore area of Qinhuangdao. The changes of SST, thermocline and the position of the tidal front are related to meteorological external forces and tidal movements, and have the characteristics of weather scale and tidal fluctuation .