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综合研究了黑河上游祁连山冰沟流域2008年积雪期水文情势,以积雪-冻土-径流为框架详细分析了该地区积雪水文特征.采用物质平衡计算了冰沟流域雪蒸发和融水值,并分析了冻土水热变化过程和融雪径流变化特征.积雪期降水总量达到204.6 mm,雪面蒸发为140.8 mm,雪面蒸发在积雪期水文循环中占有重要的位置.3月12日融雪开始,引起3次大规模的融雪峰值;整个融雪季,冰沟流域融雪径流总量为3.98×106m3.冻土解冻始于4月12日左右,随着气温升高,土壤含水量变化明显.地形和风速相互作用,造成积雪的大规模重新分布.
In this paper, the hydrological conditions during the snow cover in 2008 in the Qilian Mountains in the upper reaches of the Heihe River were comprehensively studied, and the snow hydrology characteristics in this area were analyzed in detail with the snow-frozen soil-runoff framework. The snowfall and snow melt And the characteristics of hydrothermal and snowmelt runoff changes were analyzed.The total precipitation during the snowfall period reached 204.6 mm and snow surface evaporation was 140.8 mm.The snow surface evaporation played an important role in the hydrological cycle of the snow cover.3 Snowmelt began on the 12th and caused three large-scale snowmelt peaks. During the entire snowmelt season, the total amount of snowmelt runoff in the Binggou Watershed was 3.98 × 106m3. The thawing of the frozen soil started around April 12, and as the temperature increased, Changes in water volume are significant, and the interaction of topography and wind speed causes a massive redistribution of snow cover.