摘要
利用唐古拉山冬克玛底冰川雪坑和表层积雪样品的实测资料,初步探讨本区雪层中离子淋溶作用的特征、影响因素及其对冰芯记录的干扰。研究发现淋溶作用能够对数周至数月时间尺度的雪层记录产生“平滑”作用,但不会影响冰芯记录的长期变化趋势;不同离子在淋溶过程中迁移强度并不一致,表现出一定的淋溶择优性,但同前人的淋溶择优性排列顺序并不完全相同。对雪层融水初始CF值的估计与前人的研究结果大致相同。
The elution of ions in two snow pits is discussed. We found that the snow pit at the elevation of 5550 m experenced more elution than the other one at 5650 m. As to the lower snow pit, the seasonal chemical record is disturbed. But the elution of ions only slight affects the long-term ice core record. The results of the preferential loss of ions and the CFvalues in snow meltwater are consistent with those reported.
出处
《冰川冻土》
CSCD
北大核心
1996年第3期227-234,共8页
Journal of Glaciology and Geocryology