摘要
本文通过古冰川遗迹的系统分析,揭示了太白山雪线变化和冰川发育过程,将其与黄土高原晚第四纪气候变化模式对比,阐明了太白山雪线变化和冰川发育的时代和时间序列问题。
The systematic analysis of glacial remains reveals the snowline changes and glaciation process in Mt.Taibai of the Qinling Mountains, By comparing it with the climatic changes of late pleistocene in the Loess plateau, we expose that.35, 000-10, 500 year B.P., cirque-mountain valley glacier formed in Mt, Taibai, snow-line was on 3,400m,10,500-8,500 year B. P, snow-line was on 3 ,500m .glacier tongue retreated and changed into cirque glacier.8,50C-6,800 year B, P, , snow-line rose above the top of Mt .Taibai ,snow disappeared in the summer,6,800-5,000 year B, P . ,snow-line lowered on 3,600m,parasitical cirque glacier formed,5,000-3, 120 year B.P., sonw-line rose again above the top of Mt.Taibai, snow disappeared in summer,3,120-1,400 year B,P.,snow line lowered periglacial rockfield formed on the top of Mt,Taibai.Last 1,100 year, snow-line has risen to 4,500 m,no snow can be kept in summer on the top of Mt.Taibai.
出处
《地理研究》
CSSCI
CSCD
北大核心
1990年第3期15-23,共9页
Geographical Research
关键词
古冰川
黄土高原
气候变迁
秦岭
Glacial process
Chinling mountains
Climatic changes
Loess plateau.
