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近百年来青藏高原冰川的进退变化
Fluctuations of the Glaciers on the Qinghai-Tibetan Plateau during the Past Century
【摘要】 近百年来,青藏高原的冰川虽然出现过两次退缩速率减缓或相对稳定甚至小的前进阶段,但总的过程仍然呈明显的波动退缩趋势.随着全球气候的波动变暖,特别是进入20世纪80年代以来的快速增温,使高原冰川末端在近几十年间出现了快速退缩.以高原东部和南部边缘山地的冰川变化幅度最大,而高原中北部山区和羌塘地区的冰川变化幅度较小,相对比较稳定.显示出青藏高原冰川对气候变化响应的敏感性在边缘山区较中腹地区更为敏感.
【Abstract】 In the past 100 years, glaciers on the Qinghai-Tibetan Plateau (QTP) have been general retreating continuously, although the retreat rate was twice depressed, and the glaciers were relatively positive mass balance or advanced a little. Glacier retreat rates have increased rapidly under the fluctuant global warming since the 1980s. The magnitude of the glacial retreat is the largest at the south and east margins of the QTP. Larger retreat occurs at the north of the QTP, and the least retreat occurs in the central of the QTP and the Qangtang Region. The glacial response to climatic change is more sensitivity at the margins of Qinghai-Tibetan Plateau than those inlands of Qinghai-Tibetan Plateau.
【Key words】 glacial fluctuation; changing magnitude; Qinghai-Tibetan Plateau;
- 【文献出处】 冰川冻土 ,Journal of Glaciology and Geocryology , 编辑部邮箱 ,2004年05期
- 【分类号】P343.6
- 【被引频次】199
- 【下载频次】2002