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中文摘要：
为描述季节性冻土地区的积融雪及冻土水热过程，采用能量平衡及水量平衡法建立融雪模型，采用有限体积法离散热传导方程和非饱和土壤水运动方程，并对其交界面处进行耦合处理，从而建立季节冻土区融雪冻土耦合数学模型。结合2005年曲玛莱实测站点的观测资料，从不同角度描述积雪变化，冻土活动层内土壤水热特征，检验模型方法的有效性，为揭示该地区的水文运动规律提供有力的支持。
英文摘要：
In order to describe the snow melting, a snow melt model was developed on energy and water balance. A numerical modeling of soil water and heat transfer was established with coupled full-implicit finite volume scheme. The interface of two models was calculated together. The observed data in 2005 at Qumalai were analyzed using the coupled model. Different characters of snow cover, heat and moisture transfer were testified. The results show that coupled model can be worked in these regions and provide a support to the local movement of hydrological.
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