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High-resolution scanning XRF investigation of Chinese loess and its implications for millennial-scale monsoon variability
Sun, Youbin1,2; Liang, Lianji3; Bloemendal, Jan4; Li, Ying1; Wu, Feng1; Yao, Zhengquan5; Liu, Yanguang5
2016-04-01
发表期刊JOURNAL OF QUATERNARY SCIENCE
卷号31期号:3页码:191-202
文章类型Article
摘要Millennial-scale monsoon variability has been investigated intensively using loess-based proxies; however, the amplitude and rhythms of millennial-scale signals have seldom been disentangled from the background glacial-interglacial changes. Here we present the results of high-resolution scanning X-ray fluorescence analysis of a 75-m-thick loess sequence from the north-western Chinese Loess Plateau to address glacial-interglacial to millennial monsoon variability over the last two climatic cycles. Variations of the Si/K, Fe/K and Ca/K ratios are separated spectrally into low-and high-frequency components corresponding to glacial-interglacial and millennial-scale monsoon variability, respectively. The results indicate that the three elemental ratios exhibit similar glacial-interglacial variability but with varying spectral densities at the 100-, 41- and 23-kyr periodicities. Millennial-scale variability is quite similar between the three elemental ratios, and comparable to those inferred from records of Chinese speleothem delta O-18, Greenland palaeotemperature and North Atlantic cooling events. Comparison of various proxies indicates the broad similar magnitudes of abrupt climate changes, at least during the last two glacial-interglacial cycles, whereas the timing and amplitude of abrupt climatic events are not well correlated. We suggest that refinement of loess chronology and intensive data-model integration in the future are critical to decipher the characteristics and dynamics of rapid monsoon changes. Copyright (c) 2016 John Wiley & Sons, Ltd.
关键词Chinese Loess East Asian Monsoon Elemental Ratios Millennial Variability Monsoon Dynamics
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/jqs.2856
关键词[WOS]EAST-ASIAN MONSOON ; PAST 800,000 YEARS ; NORTH-ATLANTIC ; CLIMATE VARIABILITY ; SUMMER MONSOON ; GRAIN-SIZE ; ICE-VOLUME ; MAGNETIC-SUSCEPTIBILITY ; ANTARCTIC CLIMATE ; LAST GLACIATION
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000378134000003
引用统计
被引频次:27[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/361006/5725
专题古环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
3.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China
4.Univ Liverpool, Dept Geog & Planning, Liverpool L69 3BX, Merseyside, England
5.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao, Peoples R China
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Sun, Youbin,Liang, Lianji,Bloemendal, Jan,et al. High-resolution scanning XRF investigation of Chinese loess and its implications for millennial-scale monsoon variability[J]. JOURNAL OF QUATERNARY SCIENCE,2016,31(3):191-202.
APA Sun, Youbin.,Liang, Lianji.,Bloemendal, Jan.,Li, Ying.,Wu, Feng.,...&Liu, Yanguang.(2016).High-resolution scanning XRF investigation of Chinese loess and its implications for millennial-scale monsoon variability.JOURNAL OF QUATERNARY SCIENCE,31(3),191-202.
MLA Sun, Youbin,et al."High-resolution scanning XRF investigation of Chinese loess and its implications for millennial-scale monsoon variability".JOURNAL OF QUATERNARY SCIENCE 31.3(2016):191-202.
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