Glaciochemical records from Naimona''Nyi ice core in the Himalayas
喜马拉雅地区纳木那尼的化学离子特征

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. Foundation: National Natural Science Foundation of China, No.40121101; Knowledge Innovation Project of Chinese Academy of Sciences, No.KZCX3-SW-339 Author: Liu Yongqin (1970–), Ph.D., specialized in chemical and microble records in snow and ice in Tibetan Plateau.