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Late quaternary hydrological changes at Tangra Yumco, Tibetan Plateau: a compound-specific isotope-based quantification of lake level changes
Gunther, F (Guenther, Franziska)1; Thiele, A (Thiele, Andrej)1; Biskop, S (Biskop, Sophie)2; Mausbacher, R (Maeusbacher, Roland)2; Haberzettl, T (Haberzettl, Torsten)2; Yao, TD (Yao, Tandong)3; Gleixner, G (Gleixner, Gerd)1; Gunther, F
Source PublicationJOURNAL OF PALEOLIMNOLOGY
2016
Volume55Issue:4Pages:369-382
DOI10.1007/s10933-016-9887-1
AbstractLake level fluctuations are important features in paleo-reconstructions that can be linked to past climate changes. Closed-basin lakes on the south-central Tibetan Plateau record the balance between monsoonal precipitation and evaporative loss. To date, most studies provide only qualitative estimates of past hydrological changes. For the first time, we applied hydrogen isotopes (delta D) of aquatic and terrestrial n-alkanes to quantify lake volume changes of Tangra Yumco and compared values to newly calculated lake volumes of Nam Co. We also used carbon isotopes of sedimentary n-alkanes to reveal past climate and environmental conditions around the lake. The water volume of Tangra Yumco changed by 146 km(3) in the past 17.42 cal ka. Lake volume increased in two steps, the first mainly initiated by glacial meltwater input after 16 cal ka BP, and to a minor extent by first strengthening of the Asian Summer Monsoon (ASM). The second increase was caused by intensified summer monsoon precipitation at 11.45 cal ka BP. After 8.0 cal ka BP, lake volume decreased because of arid conditions, until an increase at 0.8 cal ka BP that was probably linked to a wet spell during the Little Ice Age. The lake level changes of Tangra Yumco and Nam Co were affected simultaneously by the ASM, although their amplitudes differed because of different local conditions, such as basin morphology or the blocking effect of neighboring mountains, which influences the rainout of air masses and wind-induced evaporation.
Subject Area自然地理学
WOS IDWOS:000373304300005
Language英语
Indexed BySCI
KeywordOcean Summer Monsoon Delta-d Values Nam Co Asian Monsoon Organic Geochemistry N-alkanes Climate Sediments China Record
Cooperation Status国际
Department环境
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7726
Collection图书馆
Corresponding AuthorGunther, F
Affiliation1.Max Planck Inst Biochem, Jena, Germany
2.Univ Jena, Jena, Germany
3.Chinese Acad Sci, Inst Tibetan Plateau Res, TEL, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Gunther, F ,Thiele, A ,Biskop, S ,et al. Late quaternary hydrological changes at Tangra Yumco, Tibetan Plateau: a compound-specific isotope-based quantification of lake level changes[J]. JOURNAL OF PALEOLIMNOLOGY,2016,55(4):369-382.
APA Gunther, F .,Thiele, A .,Biskop, S .,Mausbacher, R .,Haberzettl, T .,...&Gunther, F.(2016).Late quaternary hydrological changes at Tangra Yumco, Tibetan Plateau: a compound-specific isotope-based quantification of lake level changes.JOURNAL OF PALEOLIMNOLOGY,55(4),369-382.
MLA Gunther, F ,et al."Late quaternary hydrological changes at Tangra Yumco, Tibetan Plateau: a compound-specific isotope-based quantification of lake level changes".JOURNAL OF PALEOLIMNOLOGY 55.4(2016):369-382.
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