RAPID CHANGES IN THE EAST ASIAN MONSOON DURING THE LAST INTERGLACIAL IN THE BOHAI SEA COASTAL ZONE, CHINA

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	RAPID CHANGES IN THE EAST ASIAN MONSOON DURING THE LAST INTERGLACIAL IN THE BOHAI SEA COASTAL ZONE, CHINA
	Du, SH ; Li, BS ; Li, ZW ; Chen, MH ; Xiang, R ; Zhang, DD ; Niu, DF ; Zhang, LL
刊名	JOURNAL OF SEDIMENTARY RESEARCH
	2014
卷号	84 期号:41641 页码:88-96
ISSN号	1527-1404
通讯作者	libsh@scnu.edu.cn
中文摘要	The Bohai Sea coastal zone of China faces the Pacific Ocean to the east and the Eurasian continent to the west; hence, this region is influenced by both the ocean and continental landmasses. The Bohai Sea coastal zone has significant monsoon climate characteristics and a strong sensitivity to climate change. The Miaodao stratigraphical section (MDS) contains historical information about climate features in the region, especially the high-frequency variations during the last interglacial, sea-level changes, and the evolution of the East Asian monsoon. By analyzing the ages of various sedimentary facies in combination with proxy paleoclimatic indices (i.e., grain < 63 mu m fraction, average grain size (Mz), clay + silt/sand content (SC/D), magnetic susceptibility, and the ratios Na2O/Al2O3 and (Al2O3 + TOFe)/SiO2, in the fifth segments of the MDS from the last interglacial (MDS5), we conclude that subsections 5a, 5c, and 5e were controlled by summer monsoons, whereas subsections 5b and 5d were formed when winter monsoons prevailed. These results were similar to oxygen isotope analyses from previous studies including the Spectral Mapping Project (SPECMAP) and the North Greenland Ice Core Project (NorthGRIP). Five and a half comparable oscillations in proxy indices that were dated to ca. 116.1, 118.3, 121.2, 122.7, 125.9, and 128.7 ka occurred within the MDS 5e subsection when winter monsoon winds strengthened. This millennial-scale climate variability during the Eemian period may have reached up to ten and a half oscillations with a quasi-periodicity of approximately a 1,470 year cycle during the late glacial period. This rapid period of climate change has been recorded in northern and central Europe, central Asia, and in East Asia. The climate-influencing mechanism was probably initiated by changes in solar activity and driven by the East Asian monsoon and sea-level oscillations.
学科主题	Geology
收录类别	SCI
资助信息	National Key Basic Research Program of China [2013CB9561 02]; National Basic Research Program of China [2013CB955903]; National Natural Science Foundation of China [41206036, 41290254, 91228207, 41201006]; China Postdoctoral Science Foundation funded project [2012M521632]; Key Laboratory of Marginal Sea Geology, Chinese Academy of Sciences [MSGL12-03]
原文出处	SEPM-SOC SEDIMENTARY GEOLOGY
WOS记录号	WOS:000336510800008
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10657]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Du, SH,Li, BS,Li, ZW,et al. RAPID CHANGES IN THE EAST ASIAN MONSOON DURING THE LAST INTERGLACIAL IN THE BOHAI SEA COASTAL ZONE, CHINA[J]. JOURNAL OF SEDIMENTARY RESEARCH,2014,84(41641):88-96.
APA	Du, SH.,Li, BS.,Li, ZW.,Chen, MH.,Xiang, R.,...&Zhang, LL.(2014).RAPID CHANGES IN THE EAST ASIAN MONSOON DURING THE LAST INTERGLACIAL IN THE BOHAI SEA COASTAL ZONE, CHINA.JOURNAL OF SEDIMENTARY RESEARCH,84(41641),88-96.
MLA	Du, SH,et al."RAPID CHANGES IN THE EAST ASIAN MONSOON DURING THE LAST INTERGLACIAL IN THE BOHAI SEA COASTAL ZONE, CHINA".JOURNAL OF SEDIMENTARY RESEARCH 84.41641(2014):88-96.