Journal of Geographical Sciences ›› 2006, Vol. 16 ›› Issue (4): 465-471.doi: 10.1007/s11442-006-0410-x

• Climate and Environmental Change • Previous Articles     Next Articles

Glaciochemical records from Naimona’Nyi ice core in the Himalayas

LIU Yongqin1,2, YAO Tandong1,2, TIAN Lide1,2, XU Baiqin1,2, WU Guangjian1,2   

  1. 1. Institute of Tibetan Plateau Research, CAS, Beijing 100085, China|
    2. Key Laboratory of Cryosphere and Environment, CAS, Lanzhou 730000, China
  • Received:2006-03-26 Revised:2006-05-10 Online:2006-12-25 Published:2006-12-25
  • Supported by:

    National Natural Science Foundation of China, No.40121101; Knowledge Innovation Project of Chinese Academy of Sciences, No.KZCX3-SW-339

Abstract:

A 6-m ice core was recovered in 2004 from the Naimona’Nyi Glacier, the middle Himalayas. Empirical orthogonal function (EOF) analysis on the major ion reveals that EOF1 represents the variations of majority of ions which may be originated from crustal aerosols. Comparing the calcium concentrations from the Naimona’Nyi with these from Dasuopu, East Rongbuk and Guliya ice cores, it is observed that calcium, a good indicator of the input of crustal aerosol in snow, concentrates mostly in the Guliya ice core located on the northern Tibetan Plateau, and gradually decreases from west to east in the Himalayas.

Key words: Himalayas, ice core, Naimona’Nyi, ion concentration, crustal aerosol