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The 9.2 ka event in Asian summer monsoon area: the strongest millennial scale collapse of the monsoon during the Holocene
Zhang, Wenchao1,2,3,4; Yan, Hong1,2,3; Dodson, John1,5; Cheng, Peng1; Liu, Chengcheng1,4; Li, Jianyong1; Lu, Fengyan1; Zhou, Weijian1,2,3; An, Zhisheng1,2,3
2018-04-01
发表期刊CLIMATE DYNAMICS
卷号50期号:7-8页码:2767-2782
文章类型Article
摘要Numerous 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 C-14 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).
关键词Dajiuhu Peat Central China Paleoclimate Records Abrupt Climate Changes 9.2 Ka Bp Event Weak Asian Summer Monsoon
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s00382-017-3770-2
关键词[WOS]INTERTROPICAL CONVERGENCE ZONE ; NORTH-ATLANTIC CLIMATE ; 8.2 KYR BP ; HIGH-RESOLUTION ; CENTRAL CHINA ; INDIAN MONSOON ; ENVIRONMENTAL-CHANGES ; DELTA-O-18 RECORD ; CENTENNIAL-SCALE ; TIBETAN PLATEAU
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000428600200026
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文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5218
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, Shaanxi, Peoples R China
2.Beijing Normal Univ, IRCESF, Beijing 100875, Peoples R China
3.Beijing Normal Univ, JCGCS, Beijing 100875, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Univ Wollongong, Sch Earth & Environm Sci, Wollongong, NSW 2500, Australia
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Zhang, Wenchao,Yan, Hong,Dodson, John,et al. The 9.2 ka event in Asian summer monsoon area: the strongest millennial scale collapse of the monsoon during the Holocene[J]. CLIMATE DYNAMICS,2018,50(7-8):2767-2782.
APA Zhang, Wenchao.,Yan, Hong.,Dodson, John.,Cheng, Peng.,Liu, Chengcheng.,...&An, Zhisheng.(2018).The 9.2 ka event in Asian summer monsoon area: the strongest millennial scale collapse of the monsoon during the Holocene.CLIMATE DYNAMICS,50(7-8),2767-2782.
MLA Zhang, Wenchao,et al."The 9.2 ka event in Asian summer monsoon area: the strongest millennial scale collapse of the monsoon during the Holocene".CLIMATE DYNAMICS 50.7-8(2018):2767-2782.
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