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学科主题: Geology ; Oceanography ; Paleontology
题名: Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene
作者: Deng, WF ; Wei, GJ ; Yu, KF ; Zhao, JX
通讯作者: gjwei@gig.ac.cn
关键词: rainy season ; coral ; Sr ; Ca ; d18O ; Holocene ; South China Sea
刊名: PALEOCEANOGRAPHY
发表日期: 2014
卷: 29, 期:2, 页:115-125
收录类别: sci
部门归属: [Deng, Wenfeng ; Wei, Gangjian] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Guangdong, Peoples R China ; [Yu, Kefu] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China ; [Zhao, Jian-xin] Univ Queensland, Ctr Microscopy & Microanal, Radiogen Isotope Lab, Brisbane, Qld, Australia
项目归属: 海洋地质
资助者: National Basic Research Program of China [2013CB956100]; National Natural Sciences Foundation of China [40902050, 41076025, 40830852, 41173004]
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
原文出处: 查看原文
WOS记录号: WOS:000333164100004
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10650
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Deng, WF; Wei, GJ; Yu, KF; Zhao, JX.Variations in the timing of the rainy season in the northern South China Sea during the middle to late Holocene,PALEOCEANOGRAPHY,2014,29(2):115-125
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