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Temporal variation in acidity and ion concentration of snowmelt water in light and heavy snow years

机译:轻雪和重雪年雪融水的酸度和离子浓度的时间变化

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This paper describes the temporal variation in chemical components of snowfall and snowmelt in a temperate snowy area. We conducted snowfall and snowmelt water sampling and their water quality analysis in light and heavy snow years at the Tohkamachi experiment station, Japan. We compared the behaviour of acidity and ion concentration of snowmelt water in response to annual snow conditions. Our results show that the mean acidity of snowfall is slightly higher than that of snowmelt. More acidic melt water flows out of the snowpack into the ground when snowmelt is generated on the surface and meltwater reaches the bottom of the snowpack. Comparisons between the two years revealed that although the snowpack has higher capacity for storing chemical components with increase of snowdepth, the stored chemical components gradually flow out of the snowpack with melt water caused by the heat flux from soil.
机译:本文描述了温带多雪地区降雪和融雪化学成分的时间变化。我们在日本十日町实验站进行了小雪和大雪年的降雪和融雪水采样及其水质分析。我们比较了年融雪状况下融雪水的酸度和离子浓度的行为。我们的结果表明,降雪的平均酸度略高于融雪的酸度。当表面上产生融雪并且融水到达积雪的底部时,更多的酸性融化水会从积雪中流出,进入地面。两年间的比较表明,尽管积雪具有更大的储存化学成分的能力,但随着积雪深度的增加,由于土壤热通量的作用,积聚的化学成分会随着融化水逐渐从积雪中流出。

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