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bing xue ke xue yan jiu zhong ji ge wen ti
Author(s): 
Pages: 12-24
Year: Issue:  1
Journal: Journal of Glaciology and Geocryology

Keyword:  积雪场冰川运动融雪科学研究测雪冰量水量卫星象片环境同位素积雪范围;
Abstract: <正> 世界水量平衡数量的估算,尚在校正修改过程之中,据估计整个水圈中水的总量约为1.45×109立方公里,另一估计,冰雪的水量约为28×10?立方公里。其他一些估计的数字则较此为低。在地球上总的水量中,海洋中的水量约占97.4%,但都是盐水;其余2.6%为淡水,而冰雪水量约占2%,故冰雪占地球上淡水储量3/4以上。如表1所示。
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