Source Of Major Ions From An Ice Core Of The No. 12 Glacier In Laohugou Valley, Qilian Mountain

In June 2006, a 20.12 m shallow ice core was recovered from an elevation of 5,040 m in the northern branch firn basin of No. 12 Glacier, Great Snow Mountain, in the western part of Qilian Mountain, China. Isotopes (delta O-18), major soluble ions, and radionuclide (beta-activity) measurements from the ice core revealed a 46-year record (1960-2006). In this paper, the method of sea-salt ion tracer, correlation analysis and trend analysis were used in this research to confirm the source of the chemical composition. The correlation analysis and HYSPLIT backward trajectory analysis suggests that atmospheric soluble dust species dominate the chemical signature.