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学科主题: 地理学::自然地理学
题名: Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau
作者: Ahlborn, M (Ahlborn, Marieke)1; Haberzettl, T (Haberzettl, Torsten)1; Wang, JB (Wang, Junbo)2; Furstenberg, S (Fuerstenberg, Sascha)3; Mausbacher, R (Maeusbacher, Roland)1; Mazzocco, J (Mazzocco, Jeaneth)4; Pierson, J (Pierson, James)4; Zhu, LP (Zhu, Liping)2; Frenzel, P (Frenzel, Peter)3
通讯作者: Ahlborn, M
刊名: HOLOCENE
发表日期: 2016
DOI: 10.1177/0959683615596840
卷: 26, 期:2, 页:176-187
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: Massive carbonate banks representing ancient lacustrine deposits are exposed in the catchment of the lake Tangra Yumco (southern-central Tibetan Plateau) and nearby lake Xuru Co. Nine sediment samples were taken below and above these lacustrine deposits to determine periods of changing lake level using optically stimulated luminescence (OSL) applying a multiple-aliquot regeneration (MAR) protocol. According to facies and stratigraphy, samples below the carbonate banks indicate a rising and samples from above a falling lake level. The results indicate that the rising lake level of Tangra Yumco passed the sampling location at 10.5 and 2.1 ka while a falling lake level passed the sampling location at 0.9 ka. The rising lake level of Xuru Co passed the sampling location at 7.9 and 1.7 ka and a falling lake level at 0.5 ka showing a similar trend as at Tangra Yumco. Combining these results with recalculated cosmogenic nuclide ages and previously published feldspar luminescence data allows the establishment of a Holocene lake level reconstruction for Tangra Yumco, which is unique for the southern-central Tibetan Plateau. The lake level of Tangra Yumco crested a lake level highstand of 181-183m above the recent lake level prior to 8.5 ka and has generally fallen after 8.5 ka, with a minor lake level rise at 2.1 ka. Lake level variations at Tangra Yumco occur simultaneously with other lakes on the Tibetan Plateau indicating that variations were controlled by monsoonal dynamics with a moist early Holocene and a successive reduction of available moisture thereafter. The average rate of the lake level rise between 10.5 and 8.5 ka is at least 0.05m a(-1) (compared with a modern value of 0.38m a(-1)), providing valuable insights in the monsoonal impact on lake level change on the southern-central Tibetan Plateau.
语种: 英语
WOS记录号: WOS:000368332200002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7773
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Univ Jena, Phys Geog, Inst Geog, D-07743 Jena, Germany
2.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100864, Peoples R China
3.Univ Jena, Inst Geosci, D-07743 Jena, Germany
4.Univ Illinois, Luminescence Dating Res Lab, Dept Earth & Environm Sci, Chicago, IL USA

Recommended Citation:
Ahlborn, M ,Haberzettl, T ,Wang, JB ,et al. Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau[J]. HOLOCENE,2016,26(2):176-187.
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文件名: V.26(2) 176-187 2016.pdf
格式: Adobe PDF
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