渤海海冰漂移数值研究

本文利用海冰－海洋动力耦合模式对渤海典型天气形势下海冰动力过程作了数值模拟，海冰模式建立在动量和质量守恒基础上，忽略了海冰变化的热力过程。海冰厚度被划分为三类：堆积冰、平整冰和开阔冰，冰的形变由一个厚度的重新分布约束条件确定。海洋模式是一个二维风暴潮模式．同时考虑了潮汐的作用。风场资料来自于沿岸气象观测站每日四次的风观测，计算网格是十分之一经纬度。主要的分析和模拟是在大气和海洋共同作用下海冰的漂流特点。观测结果比较表明，数值模拟结果基本上反映了该海域流冰的漂移性质，同时也可为短期冰情预报提供有益的参考。

NUMERICAL STUDY ON SEA ICE DRIFT IN THE BOHAI SEA

In this work, the sea ice dynamic drift under typical weather systemin the Bohai Sea are studied by using numerical ice-ocean coupled model.The sea ice model is based on the conservation of mass and momentumwithout the thermodynamic process.The ice thickness is divided intothree categories, i.e.open water, level ice thickness and ridged ice thickness. The ice mechanical deformation is determined by a redistributionfunction of ice thickness. The ocean model is a two-dimensional stormsurge model including the tidal currents. The atmospheric data is fromthe observations. The features of sea ice drift caused by air and oceanare simulated and compared with the observation. The agreement is quitegood and the model could be used for the sea ice forecast in the BohaiSea.