Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene
	Deng, WF ; Wei, GJ ; Yu, KF ; Zhao, JX
刊名	PALEOCEANOGRAPHY
	2014
卷号	29 期号:2 页码:115-125
关键词	rainy season coral Sr Ca d18O Holocene South China Sea
ISSN号	0883-8305
通讯作者	gjwei@gig.ac.cn
中文摘要	The amount and timing of precipitation in East Asia are important aspects of the East Asian monsoon. Many paleoclimate records that act as proxies for wet or dry climatic conditions have been linked to changes in precipitation amounts and are thus used to indicate changes in the East Asian monsoon system. However, few studies have examined changes in the timing of the rainy season. Here, we consider the timing of the seasonal precipitation cycle during the middle to late Holocene, using records derived from coupled high-resolution Sr/Ca and O-18 records preserved in Porites corals from the northern South China Sea. These records indicate that the timing of the rainy season in this region changed during the middle to late Holocene. The present-day rainy season generally occurs over the summer and autumn (June-October), which has also been recorded in Porites coral, whereas the rainy season at around 1500 and 6800years B.P. occurred through the autumn and winter (August-December), and the rainy season at around 2540 and 5000years B.P. occurred in the winter and spring (January-April or December-March). During the period around 5900years B.P., the seasonal distribution of precipitation varied from year to year. These shifts in the timing of the rainy season require changes in temperature and humidity patterns and appear to agree with changes in the magnetic susceptibility of lake sediments in this region, which may reflect movements of the Intertropical Convergence Zone location and changes in atmospheric circulation during the middle to late Holocene. Key Points Timing of rainy season changed during the middle to late Holocene over northern SCS Variation patterns of rainy season agreed with magnetic susceptibility records Shift of rainy season may be associated with ITCZ and atmospheric circulation
学科主题	Geology ; Oceanography ; Paleontology
收录类别	SCI
资助信息	National Basic Research Program of China [2013CB956100]; National Natural Sciences Foundation of China [40902050, 41076025, 40830852, 41173004]
原文出处	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000333164100004
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10650]
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	Deng, WF,Wei, GJ,Yu, KF,et al. Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene[J]. PALEOCEANOGRAPHY,2014,29(2):115-125.
APA	Deng, WF,Wei, GJ,Yu, KF,&Zhao, JX.(2014).Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene.PALEOCEANOGRAPHY,29(2),115-125.
MLA	Deng, WF,et al."Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene".PALEOCEANOGRAPHY 29.2(2014):115-125.