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Water stable isotopes in the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau
Ren, W (Ren, Wei)1,2; Yao, TD (Yao, Tandong)2; Xie, SY (Xie, Shiyou)1; Ren, W
Source PublicationTELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
2016
Volume68Issue:0Pages:30397
DOI10.3402/tellusb.v68.30397
AbstractVarious types of water samples across the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau were collected in summer 2012 for isotopic analysis to augment our specific understanding of regional hydroclimate. In the upper Yarlungzangbo system, contribution of more isotopically depleted tributary influx rather than evaporation is identified as the major hydrological process, and this causes generally progressive depletion in main flow isotopes downstream/eastward. On the regional scale (from the middle Yarlungzangbo basin to the western vicinity of the Yarlungzangbo headwaters), one of the clearest findings is the synchronous increases in river/stream delta O-18 and d-excess (d-excess = delta D-8 delta O-18) from east to west. From a geographical and climatological perspective, these can be explained by increasing contributions of summer-time continental/local recycled vs. monsoonal moisture or winter-spring vs. summer monsoon precipitation in the surface runoff generation westward. The Yarlungzangbo headwaters are at a critical transition between the Indian monsoon system in the east and the westerly one in the west as revealed by the intermediate d-excess and delta O-18 values, while the Himalaya region farther west (i.e. Pulan region) is predominated by the continental recycled moisture as revealed by the highest d-excess and delta O-18 values. Furthermore, based upon existing isotopic and meteorological data, a predicted local evaporation line for the Yarlungzangbo headwater region and its vicinity is proposed, which can further help to assess how local hydroclimate affect water stable isotopes. Results of this study provide a baseline for isotopic hydroclimate research in the southwestern Tibetan Plateau.
Subject Area自然地理学
WOS IDWOS:000379918500001
Language英语
Indexed BySCI
KeywordDeuterium Excess River System Mass-balance Great-lakes Precipitation Delta-o-18 Basin Climate Simulations Variability
Cooperation Status国内
Department环境
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7861
Collection图书馆
Corresponding AuthorRen, W
Affiliation1.Southwest Univ, Sch Geog Sci, Chongqing, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Ren, W ,Yao, TD ,Xie, SY ,et al. Water stable isotopes in the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau[J]. TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,2016,68(0):30397.
APA Ren, W ,Yao, TD ,Xie, SY ,&Ren, W.(2016).Water stable isotopes in the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,68(0),30397.
MLA Ren, W ,et al."Water stable isotopes in the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 68.0(2016):30397.
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