天山东部冰芯pH值和电导率的大气环境空间差异

• Published in: 地理学报（英文版） Vol. 19; no. 4; pp. 416 - 426
• Main Authors: 董志文, 张明军, 李忠勤, 王飞腾, 王文彬
• Format: Journal Article
• Language: Chinese
• Published: 2009
• Subjects: pH and electrical conductivity reenrds; ice cores; the eastern Tianshan Mountains; atmospheric environment
• ISSN: 1009-637X
• DOI: 10.1007/s11442-009-0416-2

P4; Electrical Conductivity Measurement (ECM) from ice core is a representative index for atmospheric environmental change. The pH value and ECM from three shallow ice cores (each 3.85 m, 231 ice samples total) on Glacier No.1 at the headwater of Urumqi River, Gla-cier No.48 in Kuitun area, and Miaoergou Glacier in Hami area in the eastern Tianshan Mountains, western China, were measured and analyzed for atmospheric environment re-cords research. Ice core record shows that the changing trend of pH and ECM in three sites in recent years is different: ECM in Kuitun increases with the ice depth change, but ECM in Hami and Urumqi Glacier No.1 ice cores show a decreasing trend. Average ECM value in Hami is much larger than other two sites, just as the dust concentration and ions concentra-tion are also very high in this site. ECM records in all three sites are mainly affected by aerosol mineral dust of Central Asia, and correlative coefficients of ECM and mineral ions such as Ca2+, Mg2+, Na+ are all significantly