Chemical Characteristics and Environmental Records of a Snow-Pit at the Glacier No.12 in the Laohugou Valley, Qilian Mountains

作     者：Xiaoqing Cui Jiawen Ren Xiang Qin Weijun Sun Guangming Yu Zebin Wang Weigang Liu 

作者机构：State Key Laboratory of Cryospheric Science Cold and Arid Region Environment and Engineering Research InstituteChinese Academy of Sciences Qilian Shan Station of Glaciology and Ecologic Environment Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu ProvinceInstitute of Arid MeteorologyChina Meteorological Administration 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2014年第25卷第2期

页      面：379-385页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：supported by the Foundation for Excellent Youth Scholars of CAREERI, CAS (No. 51Y25B01) the National Natural Science Foundation of China (No. 41301064) the National Basic Research Program of China (No. 2007CB411501) 

主　　题：snow-pit glaciochemistry Glacier No. 12 at Laohugou ion Qilian Mountain. 

摘      要：In June 2006, samples were collected from a 90 cm snow-pit at an elevation of 5 040 m a.s.l, in the northern branch firn basin of the Glacier No. 12, Laohugou Valley, in the western part of Qilian Mountain, China. Oxygen isotopes （6180） and major soluble ions were measured. Results showed that Ca2＋ is the dominant cation, and SO42 is the dominant anion. All major ions have close positive correlations with eachother except NO3 and NH4＋. 6180 show positive correlation with air temperature. The method of correlation analysis, sea-salt ion tracer and trend analysis were used to determine the source of the chemical components. The correlation analysis and HYSPLIT backward trajectory analysis suggest that atmospheric soluble dust species dominate the chemical signature.