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Remote Sensing Technology and Application  2018, Vol. 33 Issue (4): 731-740    DOI: 10.11873/j.issn.1004-0323.2018.4.0731
    
Mass Change of Glaciers in Mt.Qomolangma(Everest) Region from 1974 to 2012 as derived from Remote Sensing Data
Zhang Zhen1,Liu Shiyin2,3,4,Wei Junfeng5,Jiang Zongli4,5
(1.School of Geomatics,Anhui University of Science and Technology,Huainan 232001,China;
2.Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security,Kunming 650500,China;
3.Institute of International Rivers and Eco\|Security,Yunnan University,Kunming 650500,China;
4.State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,730000,China;5.School of Resource Environment and Safety Engineering,Hunan University of Scienceand Technology,Xiangtan,411201,China)
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Abstract  In this study,glacier mass changes are investigated for the period  1974~2012 for 14 glaciers larger than 3 km2on south and north slopes in Mt.Qomolangma(Everest) region based on ZY-3 images,SRTM DEMs and topographic maps.In general,a continuous mass loss(-0.31±0.03 m w·e·a-1) for glaciers on south and north slopes of Mt.Qomolangma could be observed between  1974 and 2012.The mass budget of 14 glaciers was -0.27±0.03 w·e·a-1 for the period  1974~1999 and -0.35±0.06 w·e·a-1 during 1999~2012.Glaciers on the south slope lost mass at a rate of -0.38±0.03 w·e·a-1,[JP]was larger than glaciers on the north slope which was at a rate of 0.27±0.03 w·e·a-1.And these glaciers change are heterogeneous and differ spatially.The main reason for negative mass budget may be attributed to the increasing air temperature,heterogeneous glacier mass balances were responded to different climate conditions.Debris-covered regions obviously exhibited higher thinning rates on the north slope about 5 500~6 000 m.However,the dependence of mass change on altitude is not significant in other regions.The main reason for this may be attributed to the heterogeneous debris thickness except for different climate conditions.Glacial lake expansion is the result of glacier rapid ablation,and also accelerates glacier melting.

Key words:  Qomolangma;ZY\      3;Glacier;Mass balance;Remote sensing     
Received:  16 March 2017      Published:  08 September 2018
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Zhang Zhen
Liu Shiyin
Wei Junfeng
Jiang Zongli

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Zhang Zhen,Liu Shiyin,Wei Junfeng,Jiang Zongli. Mass Change of Glaciers in Mt.Qomolangma(Everest) Region from 1974 to 2012 as derived from Remote Sensing Data. Remote Sensing Technology and Application, 2018, 33(4): 731-740.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2018.4.0731     OR     http://www.rsta.ac.cn/EN/Y2018/V33/I4/731

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