托木尔峰青冰滩72号冰川流域同位素特征及径流分割研究  

Characteristics of water isotopes and hydrograph separation in the Glacier No.72 of Qingbingtan,Tomur Peak

作　　者：宋梦媛 李忠勤[1,2] 金爽[2] 冯芳[2] 王晓艳[2] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,兰州730000

出　　处：《干旱区资源与环境》2015年第3期156-160,共5页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金创新研究群体项目(41121001);国家自然科学基金(41161012);中国博士后科学基金项目(2013M532094)资助

摘　　要：利用2010年8月在托木尔峰青冰滩72号冰川流域采集的不同水体样品,分析了典型冰川流域的氢氧同位素变化特征,并进行了初步的径流分割研究。结果表明,青冰滩72号冰川流域河水、冰川融水、降水中δ18O和δD含量存在显著差异;根据河水、冰川融水和降水中δ18O和δD比值关系,得出托木尔峰青冰滩72号冰川流域河水由冰川融水和降水组成;在夏季洪水期,进一步通过二元分割模型计算得出,冰川融水所占比率为74.8%,降水所占比率为25.2%,冰川融水是托木尔峰青冰滩72号冰川流域径流的主要补给来源。Based on the different water samples collected at the Glacier No. 72 of Qingbingtan in August 2010,the stable isotopes characteristics and hydrograph separation were discussed in this paper. The results indicated difference of oxygen- 18 and deuterium existed among the river water,glacier meltwater and rainfall samples.According to the relationship between δ18O and δD of stream,glacier meltwater and rainfall,the stream flow of Glacier No. 72 of Qingbingtan catchment was separated into components of glacier meltwater and rainfall. In summer flood period,the contribution of glacier meltwater to Glacier No. 72 of Qingbingtan river basin was 74. 8%,and that of rainfall was 25. 2%,which meant that glacier meltwater was the main supplying water source of stream flow.

关 键 词：青冰滩72号冰川 氢氧同位素 冰川融水 径流分割 

分 类 号：P426[天文地球—大气科学及气象学]