Registration of Precession Signal in the Last InterglacialPaleosol (S1) on the Chinese Loess Plateau

doi:10.1002/2017GC006964

IEECAS OpenIR > 古环境研究室

	Registration of Precession Signal in the Last InterglacialPaleosol (S1) on the Chinese Loess Plateau
	Ma,L(Ma,Long)1,2; Li,Y(Li,Ying)1; Liu,XX(Liu,Xingxing)1; Sun,YB(Sun,Youbin)1,3; Ma,Long
	2017-10-16
发表期刊	Geochemistry, Geophysics, Geosystems
卷号	18 期号:3 页码:3964-3975
文章类型	期刊论文
摘要	Solar insolation plays an essential role in driving orbital-scale East Asian Monsoon (EAM) variability. Unlike Chinese speleothem δ18O records characterized by dominant precessional cycles, many loess proxies from the Chinese Loess Plateau (CLP) usually display damped precessional-scale variability. To reconcile the precessional monsoon variability recorded in two classic archives, it's critical to investigate which factor can significantly affect the sensitivity of loess proxies to precessional forcing. In this study, we synthesize grain size (GS) and magnetic susceptibility (χ) results of 18 paleosol (S1) profiles over the CLP, with effort to evaluating the relative impacts of sedimentation rate (SR), and pedogenesis on the precessional signal intensity (PSI) during the last interglaciation. Based on unified grain-size age models, amplitude contrast between normalized GS and χ variations of five substages of the last interglaciation is employed to infer the PSI. The results indicate that precessional signals are evident in the GS/χ records of the high-SR loess profiles on the northern and western CLP. Comparison of the PSI variations with the SR and mean annual precipitation (MAP) changes suggests that the GS-PSI is positively correlated to the SR changes, while the χ-PSI is negatively/positively related to the SR/MAP changes. Our results confirm that distinct precessional cycles in high-resolution loess proxies permit a plausible reconciliation of monsoon variability recorded in Chinese loess and speleothem.
DOI	10.1002/2017GC006964
收录类别	SCI
所属项目编号	2013CB955904 ; 41525008 ; 41472163 ; SKLLQG1527
语种	英语
项目资助者	National BasicResearch Program of China ; National BasicResearch Program of China ; National ScienceFoundation of China ; National ScienceFoundation of China ; Open Foundationof State Key Laboratory of Loess andQuaternary Geology ; Open Foundationof State Key Laboratory of Loess andQuaternary Geology
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/5634
专题	古环境研究室
通讯作者	Ma,Long
作者单位	1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an, China 2.University of Chinese Academy of Sciences, Beijing, China 3.Institute of Global Environmental Change, Xi’anJiaotong University, Xi’an, China
第一作者单位	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Ma,L,Li,Y,Liu,XX,et al. Registration of Precession Signal in the Last InterglacialPaleosol (S1) on the Chinese Loess Plateau[J]. Geochemistry, Geophysics, Geosystems,2017,18(3):3964-3975.
APA	Ma,L,Li,Y,Liu,XX,Sun,YB,&Ma,Long.(2017).Registration of Precession Signal in the Last InterglacialPaleosol (S1) on the Chinese Loess Plateau.Geochemistry, Geophysics, Geosystems,18(3),3964-3975.
MLA	Ma,L,et al."Registration of Precession Signal in the Last InterglacialPaleosol (S1) on the Chinese Loess Plateau".Geochemistry, Geophysics, Geosystems 18.3(2017):3964-3975.

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