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《Journal of Glaciology and Geocryology》 2008-03
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Ionic Compositions of Surface Snow in the Yehelong Glacier of A'nyêmaqên Mountains in the Headwaters of Yellow River

WU Xiao-bo,WANG Ning-lian,LI Quan-lian,CHEN Liang,JIANG Xi (State Key Laboratory of Cryospheric Sciences,CAREERI,CAS,Lanzhou Gansu 730000,China)  
In October 2005,samples were collected from surface snow and six snow pits along a section of Yehelong Glacier.Their major ions and δ18O were analyzed.The analyses indicate that the major anion and cation concentration sequences rank as follows : NO-3SO2-4Cl-;Ca2+Na+Mg2+K+.Major ions and oxygen isotope ratio have obvious seasonal change,but not all ions have high concentration in dirty layer,for instance,NO-3,SO2-4,Cl-,due to the disturbance of melting-refreezing process.Insignificant spatial currents were observed over the surface snow that indicate the influence of local source is limited.Depletion δ18O in snowfall of warm season due to "amount effort".Cluster analysis was used to investigate the composition characteristics of major ions,and all ions can be divided into four groups.
【Fund】: 中国科学院百人计划项目(40121101);; 国家重点基础研究发展计划(973计划)项目(2005CB422003);; 国家杰出青年科学基金项目(40525001)资助
【CateGory Index】: P343.6
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