Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley
	Wang, FN ; Li, BS ; Wang, JL ; Wen, XH ; Niu, DF ; Li, ZW ; Si, YJ ; Guo, YH ; Du, SH
刊名	JOURNAL OF ARID LAND
	2012
卷号	4 期号:3 页码:231-240
关键词	Salawusu River Valley Pleniglacial paleoclimatic indices CaCO3 grain-size
ISSN号	1674-6767
通讯作者	libsh@scnu.edu.cn
中文摘要	Situated in the Salawusu River Valley, southeast of China's Mu Us Desert, the MGS2 (Milanggouwan section) portion of the Milanggouwan stratigraphic section records 5.5 sedimentary cycles consisting of alternations between dune sand deposits and fluvial or lacustrine facies. We analyzed the grain-size and CaCO3 distributions in MGS2, and found that Mz (mean particle diameter) and a (standard deviation) displayed clear variations in peaks and valleys within different sedimentary facies. The CaCO3 content averaged 0.4% in the dune sand deposits, 1.43% in the fluvial facies, and 8.82% in the lacustrine facies. Both the grain-size distribution and CaCO3 contents, which equal the indicators for the alternation among the sedimentary fades, suggest the occurrence of 5.5 cycles. These results suggest that the observed cycles mainly resulted from fluctuations between a cold and dry winter monsoon climate and a warm and humid summer monsoon climate, and that the MGS2 portion experienced at least 5.5 fluctuations between these two extremes. This high-frequency climatic fluctuation indicates a strong influence of millennium-scale variations in the strength of the East Asian winter and summer monsoons in our study area during the Pleniglacial.
学科主题	Environmental Sciences
语种	英语
WOS记录号	WOS:000307201200001
公开日期	2013-08-28
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10317]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Wang, FN,Li, BS,Wang, JL,et al. Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley[J]. JOURNAL OF ARID LAND,2012,4(3):231-240.
APA	Wang, FN.,Li, BS.,Wang, JL.,Wen, XH.,Niu, DF.,...&Du, SH.(2012).Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley.JOURNAL OF ARID LAND,4(3),231-240.
MLA	Wang, FN,et al."Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley".JOURNAL OF ARID LAND 4.3(2012):231-240.