Millennial-scale summer monsoon oscillations over the last 260 ka revealed by high-resolution elemental results of the Mangshan loess-palaeosol sequence from the southeastern Chinese Loess Plateau

doi:10.1016/j.quaint.2020.05.039

	Millennial-scale summer monsoon oscillations over the last 260 ka revealed by high-resolution elemental results of the Mangshan loess-palaeosol sequence from the southeastern Chinese Loess Plateau
	Wang, Yang 1,5; Guo, Fei 1,5; Ma, Long 2; Yan, Yan 3; Liu, Xingxing 5; Sun, Youbin 4,5
刊名	QUATERNARY INTERNATIONAL
	2020-06-30
卷号	552 页码:164-174
关键词	Chinese loess Elemental ratios Millennial-scale East Asian summer monsoon
ISSN号	1040-6182
DOI	10.1016/j.quaint.2020.05.039
通讯作者	Wang, Yang(wangyang@ieecas.cn) ; Sun, Youbin(sunyb@ieecas.cn)
英文摘要	Loess-based proxies have been widely used to infer glacial-interglacial to millennial-scale changes of the East Asian monsoon. However, the characteristic of millennial-scale variability is still unclear during glacial-interglacial cycles in loess-palaeosol sequence. Here, we present high-resolution (5-cm) elemental results of a 96.7-m thick Mangshan loess-palaeosol sequence on the southeastern Chinese Loess Plateau to emphasize millennial monsoon changes. We explore time series of loess proxies (magnetic susceptibility, CaCO3 content, Ca/K, Fe/K, and Rb/Sr ratios) and speleothem delta O-18 records and decompose these proxies into intrinsic components using the ensemble empirical mode decomposition method. Synthesized signals of lowand high-frequency components can track the monsoon variability at glacial-interglcial and millennial timescales, respectively. The proportions of millennial components of the loess proxies vary from 9.4%-13.4%, less than that in Chinese speleothem delta O-18 record (-24.4%). Among five loess proxies, Fe/K ratio is the most sensitive indicator of millennial-scale summer monsoon oscillations, exhibiting abrupt changes similar to that of the Chinese speleothem delta O-18 record. The amplitude of abrupt monsoon changes recorded in Mangshan is larger during interglacials than glacials, which is in line with Gulang records, implying the lower sensitivity of loess proxies to weak weathering during glacilals and an interglacial amplification of abrupt summer monsoon changes.
资助项目	National Natural Science Foundation of China[41472163] ; National Natural Science Foundation of China[41525008]
WOS关键词	EAST-ASIAN MONSOON ; EMPIRICAL MODE DECOMPOSITION ; NORTH-ATLANTIC ; YELLOW-RIVER ; GRAIN-SIZE ; CLIMATE INSTABILITY ; LATE PLEISTOCENE ; OXYGEN ISOTOPES ; INDIAN MONSOON ; HULU CAVE
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000573017600009
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15354]
专题	地球环境研究所_古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Wang, Yang; Sun, Youbin
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, Xian 710069, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510640, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yang,Guo, Fei,Ma, Long,et al. Millennial-scale summer monsoon oscillations over the last 260 ka revealed by high-resolution elemental results of the Mangshan loess-palaeosol sequence from the southeastern Chinese Loess Plateau[J]. QUATERNARY INTERNATIONAL,2020,552:164-174.
APA	Wang, Yang,Guo, Fei,Ma, Long,Yan, Yan,Liu, Xingxing,&Sun, Youbin.(2020).Millennial-scale summer monsoon oscillations over the last 260 ka revealed by high-resolution elemental results of the Mangshan loess-palaeosol sequence from the southeastern Chinese Loess Plateau.QUATERNARY INTERNATIONAL,552,164-174.
MLA	Wang, Yang,et al."Millennial-scale summer monsoon oscillations over the last 260 ka revealed by high-resolution elemental results of the Mangshan loess-palaeosol sequence from the southeastern Chinese Loess Plateau".QUATERNARY INTERNATIONAL 552(2020):164-174.