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Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling
Cui, JP (Cui, Jiangpeng)1,2; Tian, LD (Tian, Lide)1,3,4; Biggs, TW (Biggs, Trent W.)5; Wen, R (Wen, Rong)1; Tian, LD
Source PublicationHYDROLOGICAL PROCESSES
2017
Volume31Issue:5Pages:1034-1046
DOI10.1002/hyp.11085
AbstractThe 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.
Subject Area自然地理学
WOS IDWOS:000394901800006
Language英语
Indexed BySCI
KeywordISOTOPE MASS-BALANCE SOUTHERN TIBETAN PLATEAU STABLE-ISOTOPES GREAT-LAKES HYDROGEN ISOTOPES SATELLITE DATA CLIMATE-CHANGE UNITED-STATES RIVER-BASIN DELTA-D
WOS Research AreaWater Resources
WOS SubjectWater Resources ; Water Resources
Cooperation Status国际
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8328
Collection图书馆
Corresponding AuthorTian, LD
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Plateau Environm Change & Land Su, Beijing 100101, Peoples R China.
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
5.San Diego State Univ, Dept Geog, 5500 Campanile Dr, San Diego, CA 92182 USA.
Recommended Citation
GB/T 7714
Cui, JP ,Tian, LD ,Biggs, TW ,et al. Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling[J]. HYDROLOGICAL PROCESSES,2017,31(5):1034-1046.
APA Cui, JP ,Tian, LD ,Biggs, TW ,Wen, R ,&Tian, LD.(2017).Deuterium-excess determination of evaporation to inflow ratios of an alpine lake: Implications for water balance and modeling.HYDROLOGICAL PROCESSES,31(5),1034-1046.
MLA Cui, JP ,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):1034-1046.
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