As the melting of Arctic sea ice accelerates, the sea state of the Arctic Ocean is constantly changing. To accurately predict ocean waves in polar regions with ice cover, it is necessary to develop an accurate wave-ice interaction model. The wave model with ice cover based on the viscoelastic sea ice model has shown good performance in recent research results. However, the viscosity and elastic parameters in this sea ice model cannot be determined directly. A theoretical method for estimating the elastic modulus in the viscoelastic sea ice model is developed in this paper. This is a method that combines the scattering theory of elastic ice floes and the equivalent elastic energy method, which assumes that the elastic energy of discrete ice floes is equivalent to the viscoelastic ice layer. With this method, the equivalent elastic modulus of the discrete ice floe field can be directly calculated. As the diameter of the ice floe increases, the value of the equivalent elastic modulus increases nonlinearly in the calculation results, but it is not affected by the wave period.

随着北极海冰融化的加速，北冰洋的海况在不断变化。为了准确预测冰盖极地地区的海浪，有必要开发一个准确的海浪-冰相互作用模型。基于粘弹性海冰模型的带冰盖波浪模型在近期的研究成果中表现出良好的性能。然而，该海冰模型中的粘度和弹性参数无法直接确定。本文开发了一种估计粘弹性海冰模型中弹性模量的理论方法。这是一种将弹性浮冰的散射理论与等效弹性能量法相结合的方法，它假设离散浮冰的弹性能量与粘弹性冰层等效。用这种方法，可以直接计算离散浮冰场的等效弹性模量。随着浮冰直径的增加，计算结果中等效弹性模量的值呈非线性增加，但不受波浪周期的影响。