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学科主题: Geography, Physical; Geosciences, Multidisciplinary
题名: Variation of the winter monsoon in South China Sea over the past 183 years: Evidence from oxygen isotopes in coral
作者: Song, SH ; Peng, ZC ; Zhou, WJ ; Liu, WG ; Liu, Y ; Chen, TG
通讯作者: sshh@ieecas.cn
关键词: coral ; South China Sea ; East Asian winter monsoon ; El Nino-Southern Oscillation
刊名: GLOBAL AND PLANETARY CHANGE
发表日期: 2012
卷: 98-99, 页:131-138
部门归属: [Song, Shaohua; Zhou, Weijian; Liu, Weiguo] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China; [Peng, Zicheng; Liu, Yi] Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China; [Zhou, Weijian] Xi An Jiao Tong Univ, Xian 710049, Peoples R China; [Chen, Tegu] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: Oxygen isotope (delta O-18) data in winter months in living coral Porites lutea collected from the Xisha Islands, South China Sea is significantly correlated to the measured winter monsoon velocity (WMV) with a correlation coefficient of 0.63. Based on 40-year (1961-2000) instrumental data, a transfer function between the WMV and the winter delta O-18 is established: WMV= 2.819 delta O-18+19.615 (N = 40, p<0.0001). Based on the calculated WMV from delta O-18 over the past 183 years, the sequence of winter monsoon velocity (WMV) from year 1818 to 2000 in the South China Sea is re-constructed. The sequence can be divided into three stages: the first stage shows a decreasing trend of 0.009 m/s.yr from 1818 to 1954, the second stage indicates an increasing trend of 0.011 m/s.yr from 1955 to 1976, and the last stage shows a decreasing trend of 0.026 m/s.yr from 1977 to 2000. The maximum reduction in winter monsoon velocity over the last 24 years (1977-2000) is approximately 20% of the average over the last 183 years (1918-2000). The variation of wind velocity shows two complete cycles over the past 183 years. In particular, the strongest and weakest winter monsoon velocities in the last two centuries occurred in the 1830s and 1940s, respectively. The variation in winter monsoon velocity in the 20th century is closely linked to the surface temperature of the South China Sea, as well as air temperature over continental China. In addition, the winter monsoon was weak during two warm periods, i.e. the 1940s and 1980s. Statistical analysis of the winter monsoon velocity anomaly as well as the El Nino (warm event) and La Nina (cold event) phenomena indicates that 70% of El Nino events correspond to the weakness of the winter monsoon. (C) 2012 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000310862500013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10293
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Song, SH; Peng, ZC; Zhou, WJ; Liu, WG; Liu, Y; Chen, TG.Variation of the winter monsoon in South China Sea over the past 183 years: Evidence from oxygen isotopes in coral,GLOBAL AND PLANETARY CHANGE,2012,98-99():131-138
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