气候变化领域集成服务门户(CCPortal): Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau

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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; Frenzel, Peter
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 AGES QINGHAI LAKE DONGGI CONA QUARTZ OSL NAM CO CHINA LUMINESCENCE SEDIMENTS CHRONOLOGY BASIN
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
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).