在融冰期的乌梁素海人工挖凿开敞水域以模拟浮冰-水道系统，连续观测冰-水侧向界面的热力学侧向融化。根据实测数据，分析冰-水侧向界面的形状变化和影响融化速率的因素。结果显示，冰-水侧面中部形状近似直线，下部呈圆弧状，上部受气温影响向内或向外倾斜。气温是影响融化速率的主要因素，平均气温越高，融化速率越大。风速越大融化速率越低，既表现在高风速与低气温往往同时出现，又表现在风速加速了水体蒸发而降低水温。风拖曳表层水体运动，加速迎风侧水体的热量对流，降低水温，降低融化速率；通过二元回归分析建立融化速率、气温和风速之间的关系的相关关系。

The open waters were dug to simulate ice-channel system in Wuliangsu Lake during melt period and the change of lateral interface between ice and water was continuously observed. On the basis of the measured data, analysis was conducted to study the change of lateral interface and the influencing factors on thermodynamic melting rate. The results showed that the shape in the middle of the interface was like a straight line and the bottom interface presented an arc shape. However, the top inclined inside or outside under the influence of air temperature. Air temperature, as a principal factor, influenced the melting rate, and the melting rate increased with increasing air temperature. Because higher wind speed did not only usually accompany with lower air temperature but also accelerated the evaporation to reduce the water temperature, melting rate decreased with increasing wind speed. The wind pulled the water body to produce eddy at windward side, accelerated heat exchange and reduced water temperature, and finally reduced the melting rate. Moreover, the correlation between melting rate, air temperature as well as wind speed was established with binary regression.

全球变化研究国家重大科学研究计划项目(2015CB953901); 国家自然科学基金(51579028，41376186)