玉龙雪山冰川稳定同位素分馏冬夏对比
收稿日期: 2005-11-30
修回日期: 2006-03-07
网络出版日期: 2006-05-25
基金资助
国家自然科学基金项目 (40501014; 90511007); 冰川冻土特殊学科人才培养项目 (J0130084)
Comparisons of Stable Isotopic Fractionation in Winter and Summer at Baishui Glacier No. 1, Mt. Yulong
Received date: 2005-11-30
Revised date: 2006-03-07
Online published: 2006-05-25
Supported by
National Natural Science Foundation of China, No.40501014; No.90511007; Talent Culture Project for Special Subject of Glaciology and Geocryology, No.J0130084
庞洪喜, 何元庆, 卢爱刚, 赵井东, 宁宝英, 院玲玲, 宋波, 张宁宁 . 玉龙雪山冰川稳定同位素分馏冬夏对比[J]. 地理学报, 2006 , 61(5) : 501 -509 . DOI: 10.11821/xb200605006
Based on the data of δ18O in surface snow, snow pits, meltwater and the glacier-fed river water at Baishui glacier No. 1, Mt. Yulong, the isotopic fractionation behaviors in the typical monsoonal temperate glacier system in winter and summer were compared. The results indicate that the isotopic fractionation degree in summer is larger than that in winter, suggesting that the snow/ice melting is more intense in summer. Moreover, whenever it is in winter or summer, from surface snow to meltwater, and to glacier-fed river water, the gradient of δ18O with altitude gradually increases. It shows that the degree of isotopic fractionation gradually strengthens when surface snow being converted into meltwater and finally into glacial river water, which suggests that the influence of post-depositional processes on δ18O gradient in the monsoonal temperate glacier region differs spatially.
Key words： Yunnan; Yulong Mountain; monsoonal temperate-glacier; δ18O
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