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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
Corresponding AuthorCai, Yanjun(yanjun_cai@xjtu.edu.cn)
2021-03-15
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
Volume558Pages:12
AbstractMonsoon 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.
Keywordstalagmite central China stable isotopes East Asian summer monsoon variability Holocene
DOI10.1016/j.epsl.2021.116758
Indexed BySCI ; SCI
Language英语
Funding ProjectNational 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 Research AreaGeochemistry & Geophysics
Funding OrganizationNational 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 SubjectGeochemistry & Geophysics
WOS IDWOS:000615325500004
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16047
Collection现代环境研究室
Corresponding AuthorCai, Yanjun
Affiliation1.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
Recommended Citation
GB/T 7714
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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