glacier mass-balance

基本解释

Mass balance observations on Urumqi River, No. 1 Glacier and Tuyuksu Glacier in Tian-shan show a large deficit during the 1980's as compared with the decades before.
天山北坡乌鲁木齐河1号冰川与土尤克苏冰川物质平衡观察表示80年代比以前出现大的亏损。
But, the retreat of a glacier’s “snout” is only one of three measures of how glaciers can change. The other two are its “mass balance” and the rate at which melt-water is discharged.
但是，对冰川末端缩退速度的测量只是冰川变化的三种测量方法之一，另外两种是冰川的“质量平衡”测算法和融水排放速度测算法。
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