Monitoring the evolution of permafrost in the Tien Shan

被引：0
|
作者：
Gorbunov, AP [1 ]
机构：
[1] ICGM,ALMA ATA 480091,KAZAKHSTAN
来源：
PERMAFROST AND PERIGLACIAL PROCESSES | 1996年 / 7卷 / 03期
关键词：
permafrost; frozenground; Pleistocene; Holocene Little Ice Age;
D O I：
暂无
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
The extent and altitudinal range of permafrost in the Tien Shan has changed many times during the Holocene. The lower limit of permafrost has risen significantly, but from time to time it has regressed. For example, the limit of permafrost during the Little Ice Age was lower than it is now by about 300-400 m. Based on the distribution of relict permafrost features in the Tien Shan, the mean annual air temperature in the Little Ice Age was 2-3 degrees C lower than today. During the last years, permafrost temperatures have increased 0.1 to 0.4 degrees C.
引用
收藏
页码：297 / 298
页数：2
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