Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ejrh.2021.100807
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dc.titleTracing potential water sources of the Nagqu River using stable isotopes
dc.contributor.authorYang, Yuheng
dc.contributor.authorWeng, Baisha
dc.contributor.authorYan, Denghua
dc.contributor.authorGong, Xiaoyan
dc.contributor.authorDai, Yanyu
dc.contributor.authorNiu, Yongzhen
dc.contributor.authorDong, Guoqiang
dc.date.accessioned2022-10-12T10:04:25Z
dc.date.available2022-10-12T10:04:25Z
dc.date.issued2021-04-01
dc.identifier.citationYang, Yuheng, Weng, Baisha, Yan, Denghua, Gong, Xiaoyan, Dai, Yanyu, Niu, Yongzhen, Dong, Guoqiang (2021-04-01). Tracing potential water sources of the Nagqu River using stable isotopes. Journal of Hydrology: Regional Studies 34 : 100807. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ejrh.2021.100807
dc.identifier.issn2214-5818
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232643
dc.description.abstractStudy region: The Nagqu River watershed (NRW) on the Qinghai–Tibet Plateau (QTP). Study focus: Precipitation, snowmelt, streamflow, and groundwater samples were collected in the NRW and used to analyze the contribution of different water sources to streamflow during different freeze–thaw periods. Stable isotopes of hydrogen (D) and oxygen (18O) and water chemistry were analyzed for the period ranging from 2016 to 2019, and tritium (T) and carbon-14 (14C) isotopes were analyzed for 2019. New hydrological insights for the region: Rain and snowmelt were found to reflect the chemical characteristics of precipitation, and the primary ions in both water types were Ca2+ and SO42?. The ?D and ?18O isotope values of rain and snowmelt were relatively low during the entire thaw period (from June to October) and relatively high in the entire frozen period (from November to May). The results of the optimum multiparameter and mass balance analyses showed that groundwater and snowmelt accounted for approximately 39.8 % and 32.2 % to the Nagqu River water flow, respectively, whereas precipitation accounted for approximately 28.0 %. The groundwater in clastic rock fissures around the northern Cuona Lake, and permafrost and ground ice in the bedrock layer were identified as older water types with relatively low infiltration rates, and bedrock fissures in the southeastern and southwestern areas contained younger water with better recoverability. © 2021 The Authors
dc.publisherElsevier B.V.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceScopus OA2021
dc.subjectGroundwater
dc.subjectHydrologic pathway
dc.subjectPrecipitation
dc.subjectSnowmelt
dc.subjectStable isotope
dc.subjectStreamflow
dc.typeArticle
dc.contributor.departmentDEPT OF GEOGRAPHY
dc.description.doi10.1016/j.ejrh.2021.100807
dc.description.sourcetitleJournal of Hydrology: Regional Studies
dc.description.volume34
dc.description.page100807
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