Mechanisms and Simulation of Accelerated Shrinkage of Continental Glaciers: A Case Study of Urumqi Glacier No. 1 in Eastern Tianshan, Central Asia  

作　　者：李忠勤 李慧林 陈亚宁 

机构地区：[1]State Key Laboratory of Cryospheric Sciences/Tianshan Glaciological Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences [2]College of Geography and Environment Sciences, Northwest Normal University [3]Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences

出　　处：《Journal of Earth Science》2011年第4期423-430,共8页地球科学学刊（英文版）

基　　金：supported by the National Basic Research Program of China (No. 2007CB411501);the Knowledge Innovation Project of the Chinese Academy of Sciences (No. KZCX2-EW-311);the National Natural Science Foundation of China (Nos. 91025012, J0930003/J0109)

摘　　要：Similar to most mountain glaciers in the world, Urumqi Glacier No. 1 （UG1）, the best observed glacier in China with continued glaciological and climatological monitoring records of longer than 50 years has experienced an accelerated recession during the past several decades. The purpose of this study is to investigate the acceleration of recession. By taking UG1 as an example, we analyze the generic mechanisms of acceleration of shrinkage of continental mountain glaciers. The results indicate that the acceleration of mass loss of UG1 commenced first in 1985 and second in 1996 and that the lat- ter was more vigorous. The air temperature rises during melting season, the ice temperature augment of the glacier and the albedo reduction on the glacier surface are considered responsible for the accelerated recession. In addition, the simulations of the accelerated shrinkage of UG1 are introduced in this article.Similar to most mountain glaciers in the world, Urumqi Glacier No. 1 （UG1）, the best observed glacier in China with continued glaciological and climatological monitoring records of longer than 50 years has experienced an accelerated recession during the past several decades. The purpose of this study is to investigate the acceleration of recession. By taking UG1 as an example, we analyze the generic mechanisms of acceleration of shrinkage of continental mountain glaciers. The results indicate that the acceleration of mass loss of UG1 commenced first in 1985 and second in 1996 and that the lat- ter was more vigorous. The air temperature rises during melting season, the ice temperature augment of the glacier and the albedo reduction on the glacier surface are considered responsible for the accelerated recession. In addition, the simulations of the accelerated shrinkage of UG1 are introduced in this article.

关 键 词：GLACIER acceleration of recession Urumqi Glacier No. 1 mechanism. 

分 类 号：P343.6[天文地球—水文科学] P618.41[天文地球—地球物理学]