粒雪
1.Granular, partially consolidated snow that has passed through one summer melt season but is not yet glacial ice.
2.The date that the peak value P1 of electrical conductivity in snowpit merges into firn ice is about 40 days prior to that of large particles(Diameter>10μm) merging into firn ice.
3.The analyses of the correlation and EOF show that δ 18 O values are evident positive correlation with Ca 2+ , Mg 2+ , NH 4 +, SO 4 2- , and NO 3 - concentrations, but not relevant with Na +, Cl - and K + concentrations.
