气候变化领域集成服务门户(CCPortal): Lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, investigated using optically stimulated luminescence dating of beach ridges

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DOI	10.1088/1748-9326/4/4/045204
	Lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, investigated using optically stimulated luminescence dating of beach ridges
	Li, Dewen; Li, Yingkui; Ma, Baoqi; Dong, Guocheng; Wang, Liqiang; Zhao, Junxiang
通讯作者	Li, DW (通讯作者)
发表日期	2009
ISSN	1748-9326
卷号	4 期号:4
英文摘要	This paper presents a preliminary study on lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, by dating four groups of beach ridges using optically stimulated luminescence (OSL). The highest/oldest beach ridge group (>100 m higher than the current lake level) is dated back to 67.9 +/- 2.4 ka BP, corresponding to the early stage of the Last Glaciation (marine isotope stage (MIS) 4). This date further supports that no plateau-scale ice sheet covered the Tibetan Plateau during the Last Glaciation. The other three groups produce OSL ages of 30.4 +/- 2.9 to 18.6 +/- 1.7, 12.5 +/- 1.6 to 9.2 +/- 0.5, and 6.9 +/- 0.2 ka BP respectively, most likely corresponding to cold or wet climate periods of the late stage of the Last Glaciation (MIS 2), deglaciation, and Holocene Hypsithermal. On the plateau scale, these four beach ridge groups are almost synchronous with advances or standstills of Himalayan glaciers, indicating similar climate controls across the central and southern Tibetan Plateau, and being consistent with the conclusion, obtained from nearby ice core records, that this area is affected by the South Asia monsoon. Furthermore, beach ridges are also synchronous with fluvial terraces in the northern Tibetan Plateau, implying common driving forces during their formation. Therefore, some terraces may be formed as a result of climate events rather than being of tectonic origin.
关键词	ICE CORE QUATERNARY GLACIATION LATE HOLOCENE CLIMATE DEFINITIONS FOREDUNES MICHIGAN PLATEAU RECORDS LOESS
英文关键词	Selin Co; beach ridges; Tibetan Plateau; OSL dating; MIS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000272900500061
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
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/257696
推荐引用方式 GB/T 7714	Li, Dewen,Li, Yingkui,Ma, Baoqi,et al. Lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, investigated using optically stimulated luminescence dating of beach ridges[J]. 中国科学院青藏高原研究所,2009,4(4).
APA	Li, Dewen,Li, Yingkui,Ma, Baoqi,Dong, Guocheng,Wang, Liqiang,&Zhao, Junxiang.(2009).Lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, investigated using optically stimulated luminescence dating of beach ridges.ENVIRONMENTAL RESEARCH LETTERS,4(4).
MLA	Li, Dewen,et al."Lake-level fluctuations since the Last Glaciation in Selin Co (lake), Central Tibet, investigated using optically stimulated luminescence dating of beach ridges".ENVIRONMENTAL RESEARCH LETTERS 4.4(2009).