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讨论了海冰动力学性质并阐述决定海冰漂移的动量平衡，冰脊和水道形成及确定冰应力与形变、强度之间关系的海冰流变学。提出了模拟海冰动力学过程的数值模式，模式中冰厚分布由开阔水、平整冰和堆积冰３种要素表示．在这３要素的预报方程中引入形变函数，采用一种参数化方法模拟冰脊和水道．为了表示冰内相互作用，将海冰作为一种非线性粘性可压缩物质，采用粘－塑性本构关系。本文还概述和讨论了模式中所采用的数值方法，应用此模式模拟了渤海、波罗的海的波的尼亚湾和拉布拉多海的冰漂移．渤海冰漂移模拟结果明显地显示出潮周期变化，还模拟了渤海的冰脊和水道，进行了海冰流变学参数的敏感性试验．并将此冰模式与大气模式和边界层模式联接，给出渤海海冰预报结果。
The kinetic properties of sea ice are discussed. The sea ice rheology is also described, which determines the momentum balance of sea ice drift, the formation of ridges and channels, and the relationship between ice stress and deformation and strength. The numerical model of sea ice dynamics is proposed. The ice thickness distribution in the model is represented by three elements: open water, flat ice and stacked ice. The deformation function is introduced in the prediction equations of these three elements, and a parameterized method is used to simulate ridges and channels. To represent the ice-ice interaction, sea ice is used as a non-linear, viscous, compressible material with a visco-plastic constitutive relationship. This paper also summarizes and discusses the numerical methods used in the model, which simulate the ice drift in the Gulf of Bothnia and Labrador waves of the Bohai Sea and the Baltic Sea. The simulation results of ice drift in the Bohai Sea clearly show the change of the tide period, and also simulate the ridges and channels in the Bohai Sea. The sensitivity tests of sea ice rheological parameters were carried out. The ice model is linked with the atmospheric model and the boundary layer model to give the result of sea ice prediction in the Bohai Sea.