The article presents a two-dimensional three-layer non-stationary thermodynamic model allowing to calculate the annual variation (thermodynamic evolution) of the ice ridge using external meteorological and hydrological parameters as well as the information on the initial ice ridge porosity. For the test model simulation, the results of the study of morphometric characteristics of the ice ridge carried out in Maykut and Untersteiner, 1971 and in April 2012 at « North Pole −38» and «North Pole −39» drifting stations were used. These studies were conducted using electric thermal drilling with computer recording of the penetration rate. Boreholes were drilled along the cross-section of the ridge crest at 0.5 m intervals. Cross-sectional profiles of ice ridge are illustrated. Applying the proposed model, it was possible to adequately reproduce the observed evolutionary changes in the main morphometric parameters (sail height, keel depth, thickness of the consolidated layer) of the investigated ice ridge.

本文提出了一个二维三层非平稳热力学模型，允许使用外部气象和水文参数以及初始冰脊孔隙度信息来计算冰脊的年度变化（热力学演化）。在测试模型模拟中，使用了 1971 年 Maykut 和 Untersteiner 以及 2012 年 4 月在“北极 -38”和“北极 -39”漂流站进行的冰脊形态特征研究的结果。这些研究是使用电热钻进行的，计算机记录钻速。沿屋脊顶部横截面以 0.5 m 的间隔钻孔。图中显示了冰脊的横截面轮廓。应用所提出的模型，可以充分重现所观察到的冰脊主要形态参数（帆高度、龙骨深度、固结层厚度）的演化变化。