Ice Surface-Elevation Change and Velocity of Qingbingtan Glacier No.72 in the Tomor Region,Tianshan Mountains,Central Asia

查看全文 作　　者：WANG [1,2]Puyu;LI [1,2]Zhongqin;LI [2]Huilin;WANG [2]Wenbin;WANG [2]Feiteng

机构地区：[1]College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China;[2]State Key Laboratory of Cryospheric Sciences, Cold and Arid Region Environment and Engineering Research Institute/Tianshan Glaciological Station, Chinese Academy of Sciences, Lanzhou 730000, China

出　　处：《Journal of Mountain Science》索引2011年第8卷第6期,共10页

基　　金：jointly supported by National Key Project for Basic Research of China (Grant No.2010CB951003);Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No.No.KZCX2-EW-311);National Natural Science Foundation of China (Grant Nos.40631001,41001040,41101066) 摘　　要：Glaciers in the Tomor region of Tianshan Mountains preserve vital water resources.However,these glaciers suffer from strong mass losses in the recent years because of global warming.From 2008 to 2009,a large-scale scientific expedition has been carried out in this region.As an individual reference glacier,the tongue area of Qingbingtan glacier No.72 was measured by the high precise Real Time Kinematic-Global Position System (RTK-GPS).In this paper,changes of the tongue area of Qingbingtan glacier No.72 has been studied based on topographic map,remote sensing image and the survey during 2008-2009 field campaign.Results indicated that the ice surface-elevation of the tongue area changed-0.22±0.14 m a-1 from 1964 to 2008.The estimated loss in ice volume was 0.014±0.009 km3,which represented a ~20 % decrease from the 1964 volume and was equivalent to average annual mass balance of-0.20±0.12 m water equivalent for the tongue area during 1964-2008.Terminus retreated by 1852 m,approximately 41 m a-1,with the area reduction of 1.533 km2 (0.034 km2 a-1) from 1964 to 2009.Furthermore,the annual velocity reached to ~70 m a-1.Comparing with the other monitored glaciers in the eastern Tianshan Mountains,Qingbingtan glacier No.72 experienced more intensive in shrinkage,which resulted from the combined effects of climate change and glacier dynamic,providing evidence of the response to climatic warming. 关键词：冰川面积高程变化冰面速度天山中亚全球定位系统质量损失

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Ice Surface-Elevation Change and Velocity of Qingbingtan Glacier No.72 in the Tomor Region,Tianshan Mountains,Central Asia

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