Acta Geographica Sinica ›› 2009, Vol. 64 ›› Issue (1): 107-116.doi: 10.11821/xb200901011

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The pH and Electrical Conductivity of Atmospheric Environment from Three Shallow Ice Cores in the Eastern Tianshan Mountains

DONG Zhiwen1,3, LI Zhongqin1,2, WANG Feiteng1,3, ZHANG Mingjun2   

  1. 1. The State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environmental and Engineering Research Institute /Tianshan Glaciological 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
  • Received:2008-07-25 Revised:2008-11-02 Online:2009-01-25 Published:2010-08-03
  • Supported by:

    National Key Project for Basic Research of China, No.2007CB411501;Knowledge Innovation Project of CAS, No.KZCXZ-YW-127;National Natural Science Foundation of China, No. 40631001;No.40571033;No.40701034;No.40371028;No. J0630966;No.40701035. The Project for Outstanding Young Scientists of National Natural Science Foundation of China, No.40121101

Abstract:

The pH values and Electrical Conductivity Measurement (ECM) records in three shallow ice cores from Glacier No.1 at the headwater of the Urumqi River, Kuitun Glacier No.48 and Hami Miaoergou Glacier in the eastern Tianshan Mountains, western China were measured and analyzed for the research on atmospheric environmental change. Ice core records show that the changing trends of pH and ECM at the three sites in recent about 10 years are different: Kuitun ECM increased with the change of the ice depth, but Hami site and Urumqi Glacier No.1 show a decreasing trend. The average ECM value in Hami is greater than the other two sites, just as the case of high dust concentration and ions concentration at this site. ECM records are mainly affected by Asian dust, as the correlative coefficients of ECM and mineral ions such as Ca2+, Mg2+ and Na+ are significantly high. Also, pH and ECM are significantly high correlative coefficients, which coincide with the research on the Tibetan Plateau, but different from that in the polar regions.

Key words: pH and electrical conductivity records, ice core, atmospheric environment, spatial difference, eastern Tianshan Mountains