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 

机构地区：[1]State Key Laboratory of Cryospheric Science, Cold and Arid Region Environment and Engineering Research Institute,Chinese Academy of Sciences [2]Qilian Shan Station of Glaciology and Ecologic Environment [3]Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province,Institute of Arid Meteorology,China Meteorological Administration

出　　处：《Journal of Earth Science》2014年第2期379-385,共7页地球科学学刊（英文版）

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)

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.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.

关 键 词：snow-pit glaciochemistry Glacier No. 12 at Laohugou ion Qilian Mountain. 

分 类 号：P343.6[天文地球—水文科学]