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Holocene variability of East Asian summer monsoon as viewed from the speleothem delta O-18 records in central China
Cai, Yanjun1,2,3; Cheng, Xing1,4; Ma, Le1; Mao, Ruixue1; Breitenbach, Sebastian F. M.5; Zhang, Haiwei2; Xue, Gang1,4; Cheng, Hai2,6; Edwards, R. Lawrence6; An, Zhisheng1,3
通讯作者Cai, Yanjun(yanjun_cai@xjtu.edu.cn)
2021-03-15
发表期刊EARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
卷号558页码:12
摘要Monsoon precipitation in East China shows distinct spatial distribution and its variability is closely linked with the changes of the East Asian summer monsoon (EASM). Located in the transition zone between the southern subtropical humid climate and the northern warm temperate semi-humid climate, central China is a core region for recognizing and understanding the spatio-temporal variability of the EASM. Using U-series dating and stable isotope analysis on five stalagmites (MG-1, MG-2, MG-7, MG-40 and MG-64) from Magou Cave, Henan Province, Central China, we construct a high-resolution and precisely dated composite stalagmite delta O-18 time series covering most of the Holocene. This composite record reveals variations in precipitation delta O-18 between 11.7 and 1.1 ka BP with average resolution of similar to 4 yrs. The Magou composite record demonstrates that EASM intensity dominates long-term changes in precipitation delta O-18, which generally follows the northern hemisphere summer insolation (NHSI) trend. Both, Ensemble Empirical Mode Decomposition (EEMD) and wavelet filtering analyses real that the amplitudes of long-term (100-500 and 500-3000 yrs) components were slightly reduced between 8.5 and 4.9 ka BP, implying a weakened influence of climatic forcings on centennial and even millennial timescales during this warm period. Variance on 1-30-yr timescales is relatively low and ascribed to sampling resolution. Fourteen weak EASM intervals, including the 8.2 ka event, were identified within the period corresponding broadly with the Holocene Megathermal. Since no cold excursions other than the 8.2 ka event are found in the Greenland ice core records, we tentatively propose that oscillations in tropical sea surface temperature (SST) likely play an important role in steering other weak monsoon events. Aligning the Magou composite record and other moisture records with archaeological records from the study region, it seems that climate change influenced both the spatial distribution and agricultural practices of ancient cultures. However, overall moderate climatic changes in this region, most likely characterized by shifts between subtropical humid climate and warm temperate semi-humid climate, supported a generally consecutive development of ancient cultures without major hiatuses. (C) 2021 Elsevier B.V. All rights reserved.
关键词stalagmite central China stable isotopes East Asian summer monsoon variability Holocene
DOI10.1016/j.epsl.2021.116758
收录类别SCI ; SCI
语种英语
资助项目National Key Research and Development Program of China[2017YFA0603401] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 40010200] ; National Natural Science Foundation of China[41888101] ; Young Talent Support Plan of Xi'an Jiaotong University
WOS研究方向Geochemistry & Geophysics
项目资助者National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Young Talent Support Plan of Xi'an Jiaotong University
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000615325500004
出版者ELSEVIER
引用统计
被引频次:34[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/361006/16047
专题现代环境研究室
通讯作者Cai, Yanjun
作者单位1.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, 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.Qingdao Natl Lab Marine Sci & Technol, Open Studio OCCEC, Qingdao, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
6.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
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Cai, Yanjun,Cheng, Xing,Ma, Le,et al. Holocene variability of East Asian summer monsoon as viewed from the speleothem delta O-18 records in central China[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,558:12.
APA Cai, Yanjun.,Cheng, Xing.,Ma, Le.,Mao, Ruixue.,Breitenbach, Sebastian F. M..,...&An, Zhisheng.(2021).Holocene variability of East Asian summer monsoon as viewed from the speleothem delta O-18 records in central China.EARTH AND PLANETARY SCIENCE LETTERS,558,12.
MLA Cai, Yanjun,et al."Holocene variability of East Asian summer monsoon as viewed from the speleothem delta O-18 records in central China".EARTH AND PLANETARY SCIENCE LETTERS 558(2021):12.
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