摘要
表面样和钻取样的离子浓度都随采样点距最高点(6800m)之间距离的增大而增大,钻取样的这一变化比表面样更明显。这种变化可归因于雪中的杂质主要来自陆源物质。在距最高点5km处离子浓度及δ^(18)O的变化反映了雪的融化作用。
The concentrations of chemical species increase with the increase of distance from the top (6 800 m) of the Guliya Ica Cap. This trend is more obvious in the drilled snow samples than the fresh surface snow samples. It suggests that the chemical species are mainly terrestrial-derived, while chloride, sulfate and nitrate have other sources besides terrestrial-derived dust. The chemical concentration and Oxygen isotope changes at 5 km are due to snow melting. The changes from 0 to 1 km are caused by wind blowing.
出处
《冰川冻土》
CSCD
北大核心
1993年第3期467-473,共7页
Journal of Glaciology and Geocryology
关键词
冰帽
化学成分
空间变化
古里雅
spatial variations, snow chemistry, sources of chemical species, wind blowing
