COLD SURFACE-LAYER
; THERMAL STATE
; ACTIVE-LAYER
; NORTHERN-HEMISPHERE
; TIBET PLATEAU
; TEMPERATURE
; CLIMATE
; AIR
; STORGLACIAREN
; MECHANISMS
WOS学科分类:
Multidisciplinary Sciences
WOS研究方向:
Science & Technology - Other Topics
英文摘要:
The Cryosphere has been undergoing a worldwide retreat, as seen in the decrease in the areal extent and volume of glaciers and in the areal extent of permafrost. This paper presents a systematic examination of the inherent stability changes of glaciers and permafrost caused by warming. Various study results suggest that over the past 30 years, the internal temperature of glaciers and permafrost exhibits an overall accelerating warming trend. The warming rate peaked in the mid-2000s and slowed slightly for several years afterward. In recent years, however, the warming rate has seemed to pick up again. The warming of glaciers and permafrost has exerted great impact on their stability, displayed as intensified melting, increased glacier surging, enlargement of supraglacial lakes, and increased permafrost degradation. Even without a future temperature increase, some glaciers will continue to shrink, and the number of surging glaciers will increase. The transition from low-temperature to high-temperature permafrost is a noticeable warning sign of a comprehensive degradation of permafrost. These results indicate that "warming" glaciers and permafrost will exert significant impacts on the hydrology, ecology, and stability of engineering in cold regions. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
1.Chinese Acad Sci, Northwest China Ecol Environm & Resource Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710027, Shaanxi, Peoples R China 5.Northwest Univ, Coll Urban & Environm Sci, Xian 710027, Shaanxi, Peoples R China 6.Chinese Acad Sci, Northwest China Ecol Environm & Resource Res Inst, State Cryosphere Monitor & Res Stn, Lanzhou 730000, Gansu, Peoples R China 7.Chinese Acad Sci, Northwest China Ecol Environm & Resource Res Inst, State Glacier Monitor & Res Stn, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation:
Ding, Yongjian,Zhang, Shiqiang,Zhao, Lin,et al. Global warming weakening the inherent stability of glaciers and permafrost[J]. SCIENCE BULLETIN,2019-01-01,64(4):245-253