DOI: 10.1007/s00382-017-3770-2
Scopus记录号: 2-s2.0-85021138833
论文题名: The 9.2 ka event in Asian summer monsoon area: the strongest millennial scale collapse of the monsoon during the Holocene
作者: Zhang W. ; Yan H. ; Dodson J. ; Cheng P. ; Liu C. ; Li J. ; Lu F. ; Zhou W. ; An Z.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-07-08 起始页码: 2767
结束页码: 2782
语种: 英语
英文关键词: 9.2 ka BP event
; Abrupt climate changes
; Central China
; Dajiuhu peat
; Paleoclimate records
; Weak Asian summer monsoon
Scopus关键词: climate variation
; Holocene
; monsoon
; paleoatmosphere
; paleoclimate
; peat
; proxy climate record
; sediment analysis
; spatial distribution
; summer
; China
; Dajiuhu Basin
; Hubei
英文摘要: 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 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). © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109353
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China; Interdisciplinary Research Center of Earth Science Frontier (IRCESF) and Joint Center for Global Change Studies (JCGCS), Beijing Normal Universtity, Beijing, 100875, China; University of Chinese Academy of Sciences, Beijing, 100049, China; School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW 2500, Australia
Recommended Citation:
Zhang W.,Yan H.,Dodson J.,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,2018-01-01,50(2018-07-08)