History and variability of Asian interior aridity recorded by eolian flux in the Chinese Loess Plateau during the past 7 Ma

IOCAS-IR > 海洋地质与环境重点实验室

	History and variability of Asian interior aridity recorded by eolian flux in the Chinese Loess Plateau during the past 7 Ma
	Sun, YB ; An, ZS
	2002-05-01
发表期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN	1006-9313
卷号	45 期号:5 页码:420-429
文章类型	Article
摘要	Eolian flux in the Chinese Loess Plateau was reconstructed by measuring the dry bulk density and CaCO3 content of the late Cenozoic loess-paleosol-red clay sequences in the Lingtai profile. Comparison of eolian flux variation between the Lingtai profile and the ODP sites 885/886 in the North Pacific shows a significant wet-dry variability in addition to a gradual drying trend in the dust source regions in interior Asia. Especially, the increase of eolian fluxes from both continental and pelagic eolian sediments indicates a sharp drying of the dust source regions between 3.6 and 2.6 MaBP, which might be attributed to the tectonic uplift of the Tibetan Plateau, which cut down the moisture input to the interior Asia. The average value and variability of eolian flux are higher after 2.6 MaBP than before, which may be related to the Quaternary climatic fluctuations on the glacial-interglacial timescale after the commencement of major Northern Hemisphere Glaciations. The eolian fluxes of the Lingtai profile and Core V21-146 in northwest Pacific show a synchronous variation on the 10(4)-10(5) a timescale, indicating that the flux variations from both continental and marine records are closely correlated to the Quaternary climatic fluctuation forced by the ice volume changes on a global scale.; Eolian flux in the Chinese Loess Plateau was reconstructed by measuring the dry bulk density and CaCO3 content of the late Cenozoic loess-paleosol-red clay sequences in the Lingtai profile. Comparison of eolian flux variation between the Lingtai profile and the ODP sites 885/886 in the North Pacific shows a significant wet-dry variability in addition to a gradual drying trend in the dust source regions in interior Asia. Especially, the increase of eolian fluxes from both continental and pelagic eolian sediments indicates a sharp drying of the dust source regions between 3.6 and 2.6 MaBP, which might be attributed to the tectonic uplift of the Tibetan Plateau, which cut down the moisture input to the interior Asia. The average value and variability of eolian flux are higher after 2.6 MaBP than before, which may be related to the Quaternary climatic fluctuations on the glacial-interglacial timescale after the commencement of major Northern Hemisphere Glaciations. The eolian fluxes of the Lingtai profile and Core V21-146 in northwest Pacific show a synchronous variation on the 10(4)-10(5) a timescale, indicating that the flux variations from both continental and marine records are closely correlated to the Quaternary climatic fluctuation forced by the ice volume changes on a global scale.
关键词	Eolian Flux Asian Interior Aridity Chinese Loess Plateau
学科领域	Geosciences, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000175138000005
引用统计	被引频次：53[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/3808
专题	海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 2.Acad Sinica, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Sun, YB,An, ZS. History and variability of Asian interior aridity recorded by eolian flux in the Chinese Loess Plateau during the past 7 Ma[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2002,45(5):420-429.
APA	Sun, YB,&An, ZS.(2002).History and variability of Asian interior aridity recorded by eolian flux in the Chinese Loess Plateau during the past 7 Ma.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,45(5),420-429.
MLA	Sun, YB,et al."History and variability of Asian interior aridity recorded by eolian flux in the Chinese Loess Plateau during the past 7 Ma".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 45.5(2002):420-429.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
sun-History and vari（369KB）			限制开放	--	浏览