Downwind aeolian sediment accumulations associated with lake-level variations of the Qinghai Lake during the Holocene, Northeastern Qinghai-Tibetan Plateau

doi:10.1007/s12665-018-8025-y

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖地质与环境实验室

	Downwind aeolian sediment accumulations associated with lake-level variations of the Qinghai Lake during the Holocene, Northeastern Qinghai-Tibetan Plateau
	Liu, Xiang-Jun; Cong, Lu; An, Fuyuan; Miao, Xiaodong; Chongyi, E.
刊名	ENVIRONMENTAL EARTH SCIENCES
	2019-01
卷号	78 期号:1
ISSN号	1866-6280
DOI	10.1007/s12665-018-8025-y
英文摘要	Many lakes in the Qinghai-Tibetan Plateau (QTP) have aeolian sands distributed in their downwind shores. However, it has been rarely systemically investigated on whether the downwind dune sand and lake evolved in association with each other or they evolved independently. Here we take the well known Qinghai Lake and its downwind sand area as a case study to investigate the issue of water-sand interaction. Grain size, magnetic susceptibility and geochemical data along with optically stimulated luminescence (OSL) ages suggest that the downwind eastern shore sandy lands co-varied with the lake level fluctuations (or lake extension changes) of the Qinghai Lake during the Holocene epoch. During the early Holocene lake lowstands (11-9ka, ka is 1000years), vast areas of exposed lacustrine sediments were eroded by prevailing westerly winds, therefore, causing sand to accumulate at the eastern shore bajada areas along the west piedmonts of the Riyue Mount, and to expand along the Daotang River valley. In contrast, during the mid to late Holocene lake highstands (7-1.2ka), eastern shore dune sands were largely stabilized, and loess accumulated and even paleosol developed, leading to substantial shrinkage of the eastern shore sandy lands. In addition, using GIS tool, we reconstructed the spatial extensions of the lakeduring highstand (Mid-Holocene) and lowstand (Early Holocene), and eastern shore desert range of early Holocene. As a result, this study indicates a close connection between the lakes in QTP and the aeolian sands downwind.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34006]
专题	青海盐湖研究所_盐湖地质与环境实验室中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Liu, Xiang-Jun,Cong, Lu,An, Fuyuan,et al. Downwind aeolian sediment accumulations associated with lake-level variations of the Qinghai Lake during the Holocene, Northeastern Qinghai-Tibetan Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2019,78(1).
APA	Liu, Xiang-Jun,Cong, Lu,An, Fuyuan,Miao, Xiaodong,&Chongyi, E..(2019).Downwind aeolian sediment accumulations associated with lake-level variations of the Qinghai Lake during the Holocene, Northeastern Qinghai-Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,78(1).
MLA	Liu, Xiang-Jun,et al."Downwind aeolian sediment accumulations associated with lake-level variations of the Qinghai Lake during the Holocene, Northeastern Qinghai-Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 78.1(2019).