High-sedimentation-rate loess records: A new window into understanding orbital- and millennial-scale monsoon variability

doi:10.1016/j.earscirev.2021.103731

IEECAS OpenIR

	High-sedimentation-rate loess records: A new window into understanding orbital- and millennial-scale monsoon variability
	Sun, Youbin 1,2; Clemens, Steven C.3; Guo, Fei 1; Liu, Xingxing 1,2; Wang, Yang 4; Yan, Yan 5; Liang, Lianji 6
通讯作者	Sun, Youbin(sunyb@ieecas.cn)
	2021-09-01
发表期刊	EARTH-SCIENCE REVIEWS
ISSN	0012-8252
卷号	220 页码:16
摘要	Chinese loess and stalagmites are two classic terrestrial archives that have been intensively studied to reconstruct the characteristics and dynamics of orbital- and millennial-scale monsoon variability. However, comparability between these two representative records remains contested due to chronological uncertainty and proxy complexity. Here five high-sedimentation-rate loess records on the Chinese Loess Plateau are investigated to assess East Asian monsoon variability at orbital and millennial timescales. By correlating loess grain size (a winter monsoon proxy) to speleothem 818O (a summer monsoon proxy), we establish an independent speleothem-based chronology for Chinese loess-paleosol sequences over the past 640 ka. The synchronized loess grain-size records indicate that winter monsoon variability is spatially consistent on glacial-interglacial to millennial timescales, exhibiting distinctive precession- and millennial-scale changes similar to those of speleothem 818O records. However, as affected by the complex processes of deposition and weathering, magnetic susceptibility variations are spatially different in terms of both amplitude and frequencies. Cross-spectral results of a loess grain-size stack with benthic oxygen isotope and orbital parameters reveal that ice volume has played a more dominant (70-75%) role than insolation (25-30%) in driving orbital-scale winter monsoon fluctuation. Comparison of high-frequency (<9 ka) components of the loess and speleothem proxies with the North Atlantic and ice-core records reveals that millennial-scale abrupt events are persistent and comparable during glacial periods. However, the magnitudes of abrupt climate events are quite different among these records during interglacials, implying that dynamics of abrupt climate changes are likely dissimilar under different glacial and interglacial boundary conditions. Integration of terrestrial, marine, and ice-core records suggests that future research should focus on quantitatively reconstructing millennial-scale changes in temperature and precipitation independently, and dynamically assessing co-evolution of orbital and millennial climate variability.
关键词	Chinese loess Stalagmites East Asian monsoon Orbital-and millennial-scale variability Monsoon dynamics
DOI	10.1016/j.earscirev.2021.103731
关键词[WOS]	EAST-ASIAN MONSOON ; EMPIRICAL MODE DECOMPOSITION ; MAJOR GLACIATION CYCLES ; CHINESE LOESS ; SUMMER MONSOON ; GLOBAL MONSOON ; WINTER MONSOON ; NORTH-ATLANTIC ; GRAIN-SIZE ; MAGNETIC-SUSCEPTIBILITY
收录类别	SCI ; SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2016YFA0601902] ; Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China[41525008]
WOS研究方向	Geology
项目资助者	Ministry of Science and Technology of China ; Chinese Academy of Sciences ; National Natural Science Foundation of China
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000703497400001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17063
通讯作者	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.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA 4.Shaanxi Inst Geol Survey, Xian 710068, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510640, Peoples R China 6.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100022, Peoples R China
推荐引用方式 GB/T 7714	Sun, Youbin,Clemens, Steven C.,Guo, Fei,et al. High-sedimentation-rate loess records: A new window into understanding orbital- and millennial-scale monsoon variability[J]. EARTH-SCIENCE REVIEWS,2021,220:16.
APA	Sun, Youbin.,Clemens, Steven C..,Guo, Fei.,Liu, Xingxing.,Wang, Yang.,...&Liang, Lianji.(2021).High-sedimentation-rate loess records: A new window into understanding orbital- and millennial-scale monsoon variability.EARTH-SCIENCE REVIEWS,220,16.
MLA	Sun, Youbin,et al."High-sedimentation-rate loess records: A new window into understanding orbital- and millennial-scale monsoon variability".EARTH-SCIENCE REVIEWS 220(2021):16.