Water Isotope framework for lake water balance monitoring and modelling in the Nam Co Basin, Tibetan Plateau

dc.contributor.authorKang, Shichang
dc.contributor.authorYi, Yi
dc.contributor.authorXu, Yanwei
dc.contributor.authorXu, Baiqing
dc.contributor.authorZhang, Yulan
dc.date.accessioned2018-02-14T00:17:54Z
dc.date.available2018-02-14T00:17:54Z
dc.date.copyright2017en_US
dc.date.issued2017
dc.description.abstractStudy region The Nam Co, the second largest and highest saline lake in central Tibetan Plateau, China. Study focus Since the establishment of the Nam Co research station, a large number of water isotope measurements in the watershed was accumulated. There is a strong need to establish an isotope framework to benefit long-term monitoring and model development. Further discussions of the water balance of the lake and water yield of the basin are also possible under an isotope framework. New hydrological insights A water isotope framework for the Nam Co basin, including the Local Meteoric Water Line, limiting isotopic composition of evaporation and two hypothetical evaporation trajectories, is established. We further applied the isotope mass balance model to estimate the overall isotopic composition of input water to the Nam Co, the evaporation over inputs ratios (E/I) for three consecutive years, and the water yields (Wy, depth equivalent runoff) at a basin scale. Our results clearly suggest a positive water budget (i.e., E/I < 1), providing another line of evidence that the subsurface leakage from Nam Co is likely. The discrepancy between isotope-based water yields estimations and field-based runoff observations suggest that, compared to the well-studied Nyainqentanglha Mountains and southwestern mountains, the ridge-and-valley landscape in the western highlands and northwestern hogbacks are possibly low yields area, which should draw more research attentions in future hydrological investigations.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis study was supported by the National Natural Science Foundation of China (41421061, 41630754), the State Key Laboratory of Cryospheric Science (SKLCS-ZZ-2017), and the Chinese Academy of Sciences (KJZD-EW-G03-04), and the InnoTech Alberta program investment fund (8793052).en_US
dc.identifier.citationKang, S., Yi, Y., Xu, Y., Xu, B. & Zhang, Y. (2017). Water Isotope framework for lake water balance monitoring and modelling in the Nam Co Basin, Tibetan Plateau. Journal of Hydrology: Regional Studies, 12 (August), 289-302. http://dx.doi.org/10.1016/j.ejrh.2017.05.007en_US
dc.identifier.urihttps://doi.org/10.1016/j.ejrh.2017.05.007
dc.identifier.urihttp://hdl.handle.net/1828/9058
dc.language.isoenen_US
dc.publisherJournal of Hydrology: Regional Studiesen_US
dc.subjectWater balanceen_US
dc.subjectE/I ratioen_US
dc.subjectIsotope frameworken_US
dc.subjectNam Coen_US
dc.subjectWater yielden_US
dc.titleWater Isotope framework for lake water balance monitoring and modelling in the Nam Co Basin, Tibetan Plateauen_US
dc.typeArticleen_US

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