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DOI | 10.1177/0959683615596840 |
Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau | |
Ahlborn, Marieke; Haberzettl, Torsten; Wang, Junbo; Fuerstenberg, Sascha; Maeusbacher, Roland; Mazzocco, Jeaneth; Pierson, James; Zhu, Liping![]() | |
通讯作者 | Ahlborn, M (通讯作者) |
发表日期 | 2016 |
ISSN | 0959-6836 |
EISSN | 1477-0911 |
起始页码 | 176 |
结束页码 | 187 |
卷号 | 26期号:2 |
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. |
关键词 | EXPOSURE AGESQINGHAI LAKEDONGGI CONAQUARTZ OSLNAM COCHINALUMINESCENCESEDIMENTSCHRONOLOGYBASIN |
英文关键词 | Holocene; lake level changes; lake sediments; luminescence dating; monsoon; Tangra Yumco; Tanqung Co; Tibetan Plateau; Xuru Co |
语种 | 英语 |
WOS研究方向 | Physical Geography ; Geology |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000368332200002 |
来源期刊 | HOLOCENE
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来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258777 |
推荐引用方式 GB/T 7714 | Ahlborn, Marieke,Haberzettl, Torsten,Wang, Junbo,et al. Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,26(2). |
APA | Ahlborn, Marieke.,Haberzettl, Torsten.,Wang, Junbo.,Fuerstenberg, Sascha.,Maeusbacher, Roland.,...&Frenzel, Peter.(2016).Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau.HOLOCENE,26(2). |
MLA | Ahlborn, Marieke,et al."Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau".HOLOCENE 26.2(2016). |
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