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Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010
Wei Yanzhou1,2; Pei Yuhua3,4; Zhang Rong-Hua1
2015-05-01
发表期刊ACTA OCEANOLOGICA SINICA
卷号34期号:5页码:12-21
文章类型Article
摘要As the spatio-temporal variability of the Kuroshio is highly influenced by mesoscale eddies, representing its seasonal variability characteristics requires sufficiently long term observations to reduce the uncertainties. Geostrophic velocity data estimated from hydrographic observation from 1987 to 2010 and the shipboard ADCP velocity data from 1993 to 2008 at the PN Section in the central East China Sea are collected to view the seasonal variability objectively. From both types of observation, it is found that the seasonal climatology mean of the Kuroshio Current exhibits significant difference in three areas, which are located at the Kuroshio Current core and its two flanks in a shallow layer less than 300 m, with the weakest northeast current at the core in autumn, the strongest counter current on the right flank in spring, and the strongest northeast current on the left flank in autumn, respectively. The seasonal variance of the Kuroshio Current also exhibits significant difference on the offshore side of the Kuroshio, with larger variance in spring and summer while smaller variance in autumn and winter. For the current parallel to the PN Section, the ratio of the seasonal variability component to the intraseasonal variability component is relatively smaller than that for the current perpendicular to the PN Section. Further analyses indicate that the seasonal variability at the PN Section is tightly linked to the upstream and downstream current variability.
关键词Kuroshio Current Seasonal Variability East China Sea Significance Test
DOI10.1007/s13131-015-0662-3
收录类别SCI
语种英语
WOS记录号WOS:000355061700002
引用统计
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/33043
专题海洋环流与波动重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China
4.Ocean Univ China, Coll Phys & Environm Oceanog, Qingdao 266100, Peoples R China
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Wei Yanzhou,Pei Yuhua,Zhang Rong-Hua. Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010[J]. ACTA OCEANOLOGICA SINICA,2015,34(5):12-21.
APA Wei Yanzhou,Pei Yuhua,&Zhang Rong-Hua.(2015).Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010.ACTA OCEANOLOGICA SINICA,34(5),12-21.
MLA Wei Yanzhou,et al."Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010".ACTA OCEANOLOGICA SINICA 34.5(2015):12-21.
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