QQ客服 官方微博 反馈留言

	Contribution of glacial melt to river runoff as determined by stable isotopes at the source region of the Yangtze River, China
	Liu Z. F.; Yao, Z. J.; Wang, R.
	2016
关键词	degree-day glacial melt isotope hydrograph separation LMWL Qinghai Tibet Plateau stable isotope degree-day model hydrograph separation storm-runoff tibetan plateau climate-change stream-flow water o-18 catchment california
英文摘要	The primary objective of this study was to quantify the contribution of glacial melt to total runoff in the Gaerqu River catchment, which is located in the source region of the Yangtze River, China. The isotope hydrograph separation method was used to separate glacier melt runoff from total runoff in the catchment. The degree-day method was used to investigate temporal variations in glacial melt runoff. The results showed that the contribution of glacial melt runoff to total runoff was 15.0%. The uncertainty of the separation was +/-3.7% at the confidence level of 95%. Glacial melt runoff was mainly generated in June, July, and August. The runoff coefficient was 0.23 for the catchment. Precipitation-induced runoff constituted 19.9% of the total precipitation, meaning that precipitation loss was >80% across the study period (a hydrological year). The Local Meteoric Water Line (LMWL) of the catchment was fitted as delta H-2 = 7.75 delta O-18 + 5.93. This line has a smaller slope and intercept than the Global Meteoric Water Line. The regression-lines for the delta O-18 and delta H-2 values of stream water indicated that evaporation was greater over the entire catchment than it was for the upstream region alone.
出处	Hydrology Research
卷	47
期	2
页	442-453
语种	英语
ISSN号	1998-9563
DOI标识	10.2166/nh.2015.089
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42756]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Liu Z. F.,Yao, Z. J.,Wang, R.. Contribution of glacial melt to river runoff as determined by stable isotopes at the source region of the Yangtze River, China. 2016.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。