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冰川冻土  1996 

1980年以来冰冻圈对气候变暖响应的若干证据

, PP. 131-138

Keywords: 冰川物质平衡,冰川变化,冻土温度,雪盖面积,冰冻圈,气候变暖

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Abstract:

进入80年代,气候较前10~20年显示出明显的变暖趋势。冰冻圈对此迅速作出了反应山岳冰川物质平衡80年代较60~70年代平均减少近173mm,相当于冰川敏感值升高约0.38℃;对气候变化反应敏感的小冰川(长度小于2km)退缩比例增加了15%~20%;冻土层中温度亦显示出强劲增势,冻土融深、冻土界限的变化已有所表现。北半球年平均雪盖面积80年代比70年代减小约4%.种种迹表明,80年代以来伴随着气候的变暖,冰冻圈内正在发生着显著变化。

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