乌鲁木齐河源高山区积雪形成期(10月)积雪层的月平均密度为140kg/m³,稳定积雪前期(11—2月)和稳定积雪后期(3—4月)雪层的月平均密度分别为190—210kg/m³和175kg/m³,非稳定积雪期(5—9月)的新雪密度介于90—125kg/m³,平均值为112kg/m³。统计分析表明,冬季积雪层的平均密度不随积雪深度而变化,但与5日平均气温和5日合计降水量呈反相关关系,夏季新雪的密度随雪深的增大而上升,风速对冬季积雪层平均密度和夏季新雪密度均无明显影响作用。

The profile averaged snow density in the high alpine area of Urumqi river basin is 140 kg/m³ in the period of the formation of deposit snow during early winter (Oct.), It grows to 190-21O kg/m³ in the early period of stable snow cover during the middle winter (Nov.-Feb.) and reduces to 175kg/m³ in the late period of stable snow cover during late winter and early spring (Mar.-Apr.).