首页|期刊导航|中国海洋湖沼学报（英文版）|Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea
中国海洋湖沼学报（英文版）2009，Vol.27Issue(4)：975-984,10.DOI:10.1007/s00343-009-9273-1
Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea
Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea
摘要
Abstract
A 700-year record (1.0-1.5 a resolution) of the East Asian winter monsoon (EAWM), based on grain-size analysis and AMS~(14)C dating of Core EC2005 from the inner-shelf mud wedge of the East China Sea (ECS), was compared with the Dongge stalagmite ξ~(18)O record during the mid-Holocene. The upper muddy section of Core EC2005 has been formed mainly by suspended sediments derived from the Changjiang (Yangtze) River mouth since 7.3 ka BP. High precipitation and a strengthened EAWM might have played key roles in the high sedimentation rate (1 324-1 986 cm/ka) between 5.9-5.2 ka BP. The EAWM strengthened when the Asian summer monsoon weakened, especially around 5 500 a BP, which corresponded to a worldwide cold event. The EAWM during the mid-Holocene shows statistically significant solar periodicities at 62 and 11 a. The 5 500 a BP cold event might be resulted from orbital forcing and changes in solar activity.关键词
5 500 a BP cold event/ grain-size/ East Asian winter monsoon/ mid-Holocene/ East China SeaKey words
5 500 a BP cold event/ grain-size/ East Asian winter monsoon/ mid-Holocene/ East China Sea分类
海洋科学引用本文复制引用
XU Fangjian,LI Anchun,XU Kehui,LI Tiegang,CHEN Shiyue,WAN Shiming,LIU Jianguo..Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea[J].中国海洋湖沼学报（英文版）,2009,27(4):975-984,10.基金项目
Supported by the National Natural Science Foundation of China (Nos. 40576032 and 40776030), and Doctor Foundation of China University of Petroleum. （Nos. 40576032 and 40776030）
