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The 4.2 ka BP event: multi-proxy records from a closed lake in the northern margin of the East Asian summer monsoon
Xiao, Jule1,2,3; Zhang, Shengrui1; Fan, Jiawei1; Wen, Ruilin1,2; Zhai, Dayou4; Tian, Zhiping5; Jiang, Dabang5
2018-10-11
发表期刊CLIMATE OF THE PAST
ISSN1814-9324
卷号14期号:10页码:1417-1425
摘要The 4.2 ka BP event has been widely investigated since it was suggested to be a possible cause for the collapse of ancient civilizations. With the growth of proxy records for decades, however, both its nature and its spatial pattern have become controversial. Here we examined multi-proxy data of the grain-size distribution, ostracode assemblage, pollen assemblage, and the pollen-reconstructed mean annual precipitation from a sediment core at Hulun Lake in northeastern Inner Mongolia spanning the period between 5000 and 3000 cal. yr BP to identify the nature and the associated mechanism of the 4.2 ka BP event occurring in the monsoonal region of eastern Asia. Higher sand fraction contents, littoral ostracode abundances, and Chenopodiaceae pollen percentages together with lower mean annual precipitation reveal a significant dry event at the interval of 4210-3840 cal. yr BP that could be a regional manifestation of the 4.2 ka BP event in the northern margin of the East Asian summer monsoon (EASM). We suggest that the drought would be caused by a decline in the intensity of the EASM on millennial-to-centennial scales that could be physically related to persistent cooling of surface waters in the western tropical Pacific and the North Atlantic. The cooling of western tropical Pacific surface waters could reduce moisture production over the source area of the EASM, while the cooling of North Atlantic surface waters could suppress northward migrations of the EASM rain belt, both leading to a weakened EASM and thus decreased rainfall in the northern margin of the EASM.
DOI10.5194/cp-14-1417-2018
资助者National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
关键词[WOS]NORTHEASTERN INNER-MONGOLIA ; CULTURAL RESPONSES ; HOLOCENE CLIMATE ; HULUN LAKE ; ICE-CORE ; COLLAPSE ; CHINA ; TEMPERATURE ; VARIABILITY ; INSTABILITY
语种英语
资助项目National Key R&D Program of China[2017YFA0603400] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26020203]
资助者National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向Geology ; Meteorology & Atmospheric Sciences
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000447011200001
出版者COPERNICUS GESELLSCHAFT MBH
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89205
专题新生代地质与环境院重点实验室
通讯作者Xiao, Jule
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, CAS Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Yunnan Univ, Yunnan Key Lab Palaeobiol, Kunming 650091, Yunnan, Peoples R China
5.Chinese Acad Sci, Nansen Zhu Int Res Ctr, Inst Atmospher Phys, Beijing 100029, Peoples R China
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Xiao, Jule,Zhang, Shengrui,Fan, Jiawei,et al. The 4.2 ka BP event: multi-proxy records from a closed lake in the northern margin of the East Asian summer monsoon[J]. CLIMATE OF THE PAST,2018,14(10):1417-1425.
APA Xiao, Jule.,Zhang, Shengrui.,Fan, Jiawei.,Wen, Ruilin.,Zhai, Dayou.,...&Jiang, Dabang.(2018).The 4.2 ka BP event: multi-proxy records from a closed lake in the northern margin of the East Asian summer monsoon.CLIMATE OF THE PAST,14(10),1417-1425.
MLA Xiao, Jule,et al."The 4.2 ka BP event: multi-proxy records from a closed lake in the northern margin of the East Asian summer monsoon".CLIMATE OF THE PAST 14.10(2018):1417-1425.
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