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

IEECAS OpenIR

	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 1,2; Guo, Fei 1,2; Ma, Long 3; Yan, Yan 4; Liu, Xingxing 1; Sun, Youbin 1,5
通讯作者	Wang, Yang(wangyang@ieecas.cn) ; Sun, Youbin(sunyb@ieecas.cn)
	2020-06-30
发表期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
卷号	552 页码:164-174
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.
关键词	Chinese loess Elemental ratios Millennial-scale East Asian summer monsoon
DOI	10.1016/j.quaint.2020.05.039
关键词[WOS]	EAST-ASIAN MONSOON ; EMPIRICAL MODE DECOMPOSITION ; NORTH-ATLANTIC ; YELLOW-RIVER ; GRAIN-SIZE ; CLIMATE INSTABILITY ; LATE PLEISTOCENE ; OXYGEN ISOTOPES ; INDIAN MONSOON ; HULU CAVE
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41472163] ; National Natural Science Foundation of China[41525008]
WOS研究方向	Physical Geography ; Geology
项目资助者	National Natural Science Foundation of China
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000573017600009
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15353
通讯作者	Wang, Yang; Sun, Youbin
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, Xian 710069, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510640, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, 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.