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Physico-chemical Characteristics and Environmental Significance of Snow Deposition on Haxilegen Glacier No.51 in Tian Shan, China

ISSN号：1000-0240
期刊名称：《冰川冻土》
时间：0
分类：P343.6[天文地球—水文科学;天文地球—地球物理学] TQ649.4[化学工程—精细化工]
作者机构：[1]State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute /Tianshan Glaeiological Station, CAS, Lanzhou 730000, China, [2]College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China, [3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China
相关基金：We would like to thank the staff and the students of Tian Shan Glaciological Station of the Chinese Academy of Sciences for their valuable logistical supports of the field work. The study is financially supported by the National Basic Research Program （973） of China（Grant No. 2010CB951003）, Knowledge Innovation Programs of Chinese Academy of Science （Grant No. KZCXZ- YW-127）, National Natural Science Foundation of China （Grant No. 91025012, 40631001, 40701034, 40701035, 1141001040）. We also thank two anonymous reviewers for helpful comments and suggestions that have greatly improved the manuscript.

作者： DONG Zhiwen[1,3], LI Zhongqin[1,2], ZHANG Mingjun[2], WANG Feiteng[1], WU Lihua[1,3]

关键词：物理化学特性, 冰川, 环境意义, 沉积, 天山, 中国, 离子浓度, 大气环境变化, Snow chemistry, Mineral dust, Environmental significance, Haxilegen glacier No. 51, Tian Shan

中文摘要：

高山的区域的冰河上的雪化学是大气的环境变化的好指示物。我们在 Haxilegen 冰河号码 51 上在不同高度在三 snowpits 检验雪化学，在 Kuitun 河来源， Tian 掸人，中国，在 7 月 9 月期间 2004 ～ 2007。我们使用跟踪方法在雪中检验主要离子和矿物质灰尘粒子的特征和来源的关联分析，因素分析和海盐。结果证明在雪坑的矿物质灰尘粒子和主要离子季节地变化。在在春季的亚洲灰尘时期期间，在雪中扔的矿物质灰尘粒子和主要离子的集中高，当集中在夏天和秋天的非灰尘时期期间是相对低的时。这可以被灰尘暴风雪活动在中亚引起。在雪包装的主要离子的集中的顺序决心是 Ca2+> SO4 2 吗？>NH4 +> NO3？> Cl ?>Na+>Mg2+>K+ 。Ca2+ 是主导的阳离子；SO4 2？是主导的阴离子。我们发现，与 NO3 的例外 ? ，离子的集中的可变性高度被相关。结果证明冰河区域被灰尘活动和人为的来源显著地影响。主要离子，特别 Na+ ，从中亚的灰尘来源并且从海洋发源，由西的风搬运了。

英文摘要：

Snow chemistry on the glaciers of alpine regions is a good indicator of atmospheric environmental change.We examine snow chemistry in three snowpits at different altitudes on the Haxilegen Glacier No.51,in the Kuitun River source,Tian Shan,China,during July-September 2004 to 2007.We use correlation analysis,factor analysis and sea-salt tracing methods to examine the characteristics and sources of major ions and mineral dust particles in the snow.Results show that mineral dust particles and major ions in the snow pits vary seasonally.During the Asian dust period in springtime,the concentration of mineral dust particles and major ions deposited in snow is high,while the concentration is relatively low during the non-dust period of summer and autumn.This may be caused by dust storm activity in central Asia.The order of major ionic concentrations in the snow packs was determined to be Ca2＋〉 SO42-〉 NH4＋〉 NO3-〉 Cl-〉 Na＋〉 Mg2＋〉 K＋.Ca2＋ was the dominant cation;SO42- was the dominant anion.We find,with the exception of NO3-,that the variabilities of ionic concentrations are highly correlated.Results show that the glacier region was significantly affected by dust activity and anthropogenic source.The major ions,especially Na＋,originate from dust sources of central Asia and from the Ocean,transported by the westerly winds.

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