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The 9.2 ka event in Asian summer monsoon area: the strongestmillennial scale collapse of the monsoon during the Holocene
Zhang,WC(Zhang,Wenchao)1,2; Yan,H(Yan,Hong)1,2; Dodson,J(Dodson,John)1,4; Cheng,P(Cheng,Peng)1; Liu,CC(Liu,Chengcheng)1,3; Li,YJ(Li,Jianyong)1; Lu,FY(Lu,Fengyan)1; Zhou,WJ(Zhou,Weijian)1,2; An,ZS(An,Zhisheng)1,2; Yan,Hong
2017-06
Source PublicationClimate Dynamics
Volume50Issue:7-8Pages:2767–2782
Subtype期刊论文
AbstractNumerous Holocene paleo-proxy records exhibit a series of centennial-millennial scale rapid climatic events. Unlike the widely acknowledged 8.2 ka climate anomaly, the likelihood of a significant climate excursion at around 9.2 cal ka BP, which has been notably recognized in some studies, remains to be fully clarified in terms of its magnitude and intensity, as well as its characteristics and spatial distributions in a range of paleoclimatic records. In this study, a peat sediment profile from the Dajiuhu Basin in central China was collected with several geochemical proxies and a pollen analysis carried out to help improve understanding of the climate changes around 9.2 cal ka BP. The results show that the peat development was interrupted abruptly at around 9.2 cal ka BP, when the chemical weathering strength decreased and the tree-pollen declined. This suggests that a strong drier regional climatic event occurred at around 9.2 cal ka BP in central China, which was, in turn, probably connected to the rapid 9.2 ka climate event co-developing worldwide. In addition, based on the synthesis of our peat records and the other Holocene hydrological records from Asian summer monsoon (ASM) region, we further found that the 9.2 ka event probably constituted the strongest abrupt collapse of the Asian monsoon system during the full Holocene interval. The correlations between ASM and the atmospheric 14C production rate, the North Atlantic drift ice records and Greenland temperature indicated that the weakened ASM event at around 9.2 cal ka BP could be interpreted by the co-influence of external and internal factors, related to the changes of the solar activity and the Atlantic Meridional Overturning Circulation (AMOC).
KeywordDajiuhu Peat Central China Paleoclimaterecords Abrupt Climate Changes 9.2 Ka Bp Event Weakasian Summer Monsoon
DOI10.1007/s00382-017-3770-2
Indexed BySCI
Project Number41522305 ; 41403018 ; QYZDB-SSW-DQC001 ; 132B61KYSB20160003 ; QNLM2016ORP0202
Language英语
Funding OrganizationNational Natural Science Foundation of China(NSFC) ; National Natural Science Foundation of China(NSFC) ; research Projects fromChinese Academy of Sciences ; research Projects fromChinese Academy of Sciences ; Qingdao National Laboratory forMarine Science and Technology of China ; Qingdao National Laboratory forMarine Science and Technology of China
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5635
Collection古环境研究室
Corresponding AuthorYan,Hong
Affiliation1.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment, Chinese Academyof Sciences, Xi’an 710061, China
2.Interdisciplinary Research Center of Earth Science Frontier(IRCESF) and Joint Center for Global Change Studies(JCGCS), Beijing Normal Universtity, Beijing 100875, China
3.University of Chinese Academy of Sciences, Beijing 100049,China
4.School of Earth and Environmental Sciences, Universityof Wollongong, Wollongong, NSW 2500, Australia
Recommended Citation
GB/T 7714
Zhang,WC,Yan,H,Dodson,J,et al. The 9.2 ka event in Asian summer monsoon area: the strongestmillennial scale collapse of the monsoon during the Holocene[J]. Climate Dynamics,2017,50(7-8):2767–2782.
APA Zhang,WC.,Yan,H.,Dodson,J.,Cheng,P.,Liu,CC.,...&Yan,Hong.(2017).The 9.2 ka event in Asian summer monsoon area: the strongestmillennial scale collapse of the monsoon during the Holocene.Climate Dynamics,50(7-8),2767–2782.
MLA Zhang,WC,et al."The 9.2 ka event in Asian summer monsoon area: the strongestmillennial scale collapse of the monsoon during the Holocene".Climate Dynamics 50.7-8(2017):2767–2782.
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