Observed evidence of the anomalous South China Sea western boundary current during the summers of 2010 and 2011
Shu, Yeqiang1,2; Xue, Huijie1,2; Wang, Dongxiao1; Xie, Qiang3; Chen, Ju1; Li, Jian1; Chen, Rongyu1; He, Yunkai1; Li, Daning1
2016-02-01
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号121期号:2页码:1145-1159
摘要Seven years of directly measured current data from a mooring in the Xisha area of the South China Sea (SCS), together with shipboard ADCP and satellite data, have shown the western boundary current (WBC) anomaly and its vertical structure during the summers of 2010 and 2011. The observed WBC presented obvious year-to-year variability, especially in the summer. Overall, the summer mean velocity at the mooring site over 7-year (2007-2013) was northeastward. The moored ADCP showed that the northeastward velocity was particularly strong in the summer of 2010, but the increase was confined in the upper 120 m. In contrast, the northeastward current disappeared throughout the observed depth range (from 50 to 450 m) in the summer of 2011. Even at the deepest observed position, the monthly velocity anomalies reached 14 cm s(-1) westward and 12 cm s(-1) southward in the zonal and meridional directions, respectively. Both the Vietnam offshore current (VOC) and double gyres in the western SCS disappeared and the southern anticyclonic gyre expanded to strengthened the northward WBC in the summer of 2010. However, in summer of 2011, the VOC intensified, and the northern cyclonic gyre enlarged with its northern edge reaching 18 degrees N, slightly north of mooring site, which weakened the northeastward WBC. The observed SCS circulation anomalies during 2010 and 2011 were mainly induced by the basin-scale wind field anomalies associated with the 2009/2010 El Nino and 2010/2011 La Nina.
文章类型Article
关键词Western Boundary Current South China Sea Anomaly Observed Evidence
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/2015JC011434
收录类别SCI
语种英语
关键词[WOS]EAST ASIAN TELECONNECTION ; INTERANNUAL VARIABILITY ; EL-NINO ; MESOSCALE EDDIES ; CIRCULATION ; MONSOON ; CLIMATE ; WIND ; ENSO
WOS类目Oceanography
WOS记录号WOS:000373134600007
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/1562
专题深海科学研究部_海洋环流观测与数值模拟研究室
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China
2.Univ Maine, Sch Marine Sci, Orono, ME USA
3.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya, Peoples R China
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Shu, Yeqiang,Xue, Huijie,Wang, Dongxiao,et al. Observed evidence of the anomalous South China Sea western boundary current during the summers of 2010 and 2011[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2016,121(2):1145-1159.
APA Shu, Yeqiang.,Xue, Huijie.,Wang, Dongxiao.,Xie, Qiang.,Chen, Ju.,...&Li, Daning.(2016).Observed evidence of the anomalous South China Sea western boundary current during the summers of 2010 and 2011.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,121(2),1145-1159.
MLA Shu, Yeqiang,et al."Observed evidence of the anomalous South China Sea western boundary current during the summers of 2010 and 2011".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 121.2(2016):1145-1159.
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