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DOI	10.1002/hyp.11085
	Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling
	Cui, Jiangpeng; Tian, Lide; Biggs, Trent W.; Wen, Rong
通讯作者	Tian, LD (通讯作者)
发表日期	2017
ISSN	0885-6087
EISSN	1099-1085
起始页码	1034
结束页码	1046
卷号	31 期号:5
英文摘要	The numerous lakes on the Tibetan Plateau play an important role in the regional hydrological cycle and water resources, but systematic observations of the lake water balance are scarce on the Tibetan Plateau. Here, we present a detailed study on the water cycle of Cona Lake, at the headwaters of the Nujiang-Salween River, based on 3 years (2011-2013) of observations of delta O-18 and delta H-2, including samples from precipitation, lake water, and outlet surface water. Short-term atmospheric water vapor was also sampled for isotope analyses. The delta H-2-delta O-18 relationship in lake water (delta H-2 = 6.67 delta O-18 - 20.37) differed from that of local precipitation (delta H-2 = 8.29 delta O-18 + 12.50), and the deuterium excess (d-excess) in the lake water (-7.5%) was significantly lower than in local precipitation (10.7%), indicating an evaporative isotope enrichment in lake water. The ratio of evaporation to inflow (E/I) of the lake water was calculated using both d-excess and delta O-18. The E/I ratios of Cona lake ranged from 0.24 to 0.27 during the 3 years. Observations of atmospheric water vapor isotopic composition (dA) improved the accuracy in E/I ratio estimate over a simple precipitation equilibrium model, though a correction factor method provided nearly identical estimates of E/I ratio. The work demonstrates the feasibility of d-excess in the study of the water cycle for lakes in other regions of the world and provides recommendations on sampling strategies for accurate calculations of E/I ratio.
关键词	STABLE-ISOTOPES DELTA-O-18 TIBETAN PLATEAU MASS-BALANCE HYDROGEN ISOTOPES UNITED-STATES GREAT-LAKES PRECIPITATION VAPOR SOUTH AREA
英文关键词	deuterium excess; evaporation; lake; Tibetan Plateau; water balance
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000394901800006
来源期刊	HYDROLOGICAL PROCESSES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259037
推荐引用方式 GB/T 7714	Cui, Jiangpeng,Tian, Lide,Biggs, Trent W.,et al. Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling[J]. 中国科学院青藏高原研究所,2017,31(5).
APA	Cui, Jiangpeng,Tian, Lide,Biggs, Trent W.,&Wen, Rong.(2017).Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling.HYDROLOGICAL PROCESSES,31(5).
MLA	Cui, Jiangpeng,et al."Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling".HYDROLOGICAL PROCESSES 31.5(2017).