Environmental anomalies in the northeastern East China Sea during the last 3 000 years: implications for El Nino activity in the Holocene

doi:10.1007/s00343-010-9066-6

IOCAS-IR > 海洋地质与环境重点实验室

	Environmental anomalies in the northeastern East China Sea during the last 3 000 years: implications for El Nino activity in the Holocene
	Chang Fengming; Li Tiegang; Zhuang Lihua; Yan Jun
	2010
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	28 期号:1 页码:190-200
文章类型	Article
摘要	To reconstruct the productivity changes for the last 10 500 a in the northeastern East China Sea (ECS), biogenic compounds (such as carbonate, organic carbon and opal), marine micropaleontological fossils (planktonic foraminifera, benthic foraminifera, radiolarian and silicoflagellate) and the compositional characters of benthic foraminifera fauna analyses were carried out on a sediment core DOC082 obtained from the western slope of Okinawa Trough (29 degrees 13.93'N, 128 degrees 08.53' E; 1 128 m water depth). The long-term changes of biogenic and micropaleontological proxies display some similarities through the last 10 500 a, which show three different phases: lower values are recorded during the early and middle Holocene (before about 4 000 a BP), followed by an abrupt and remarkable increase at about 4 000 a BP, the late Holocene (after about 3 000 a BP) is characterized by continuously high values. The multi-proxy data of paleoproductivity and percents of benthic foraminifera genera (Uvigerina and Bulimina) show that during the early and middle Holocene (10 500-4 000 a BP) productivity was relatively low with a sudden and distinct increase at about 4 000 a BP, and the late Holocene (3 400-0 a BP) is marked by significantly higher productivity. Also, the radiolarian-based sea surface temperature (SST) records reveal a distinct decline in SST in the late Holocene after 3 200 a BP, very different from the early and middle Holocene. For the last 3 000 a, the enhanced biological productivity and distinctly lower SST indicate a major change of oceanographic conditions in the northeastern ECS. These marine environmental anomalies are consistent with other paleoclimatic records for the late Holocene in the Chinese continent and its surrounding regions. After analyzing the mechanisms of modern productivity and SST changes in the northeastern ECS, and based on the climatic anomalies in the Chinese continent and variations in the Kuroshio Current during modern El Nino periods, we suggest that the anomalous environmental conditions in the northeastern ECS may imply intensified El Nino activity during the late Holocene.
关键词	Late Holocene Environmental Anomalies El Nino NorthEastern East China Sea Paleoproductivity Sea-surface Temperature
DOI	10.1007/s00343-010-9066-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000275654100024
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/32785
专题	海洋地质与环境重点实验室
作者单位	Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Chang Fengming,Li Tiegang,Zhuang Lihua,et al. Environmental anomalies in the northeastern East China Sea during the last 3 000 years: implications for El Nino activity in the Holocene[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(1):190-200.
APA	Chang Fengming,Li Tiegang,Zhuang Lihua,&Yan Jun.(2010).Environmental anomalies in the northeastern East China Sea during the last 3 000 years: implications for El Nino activity in the Holocene.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(1),190-200.
MLA	Chang Fengming,et al."Environmental anomalies in the northeastern East China Sea during the last 3 000 years: implications for El Nino activity in the Holocene".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.1(2010):190-200.

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