Impact of mesoscale eddies on Kuroshio intrusion variability northeast of Taiwan

doi:10.1002/2016JC012263

IOCAS-IR > 海洋环流与波动重点实验室

	Impact of mesoscale eddies on Kuroshio intrusion variability northeast of Taiwan
	Yin, Yuqi 1,2; Lin, Xiaopei 2,3; He, Ruoying 2,4; Hou, Yijun 1,2
	2017-04-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号	122 期号:4 页码:3021-3040
文章类型	Article
摘要	Abundant mesoscale eddies propagate to the east of Taiwan and affect the Kuroshio Current and its onshore intrusion northeast of Taiwan. But the dynamical process of how eddy activities modulate the Kuroshio intrusion is still unclear. In this study, in situ ocean velocity observations, drifter trajectories, tide gauge measurements, satellite sea surface height data, and assimilative Hybrid Coordinate Ocean Model (HYCOM) reanalysis outputs were used to analyze a cyclonic eddy-induced large Kuroshio onshore intrusion during late autumn 2008. Along with nine anticyclonic eddy events and seven cyclonic eddy events extracted from long-term HYCOM reanalysis outputs, the variability of the eddy-induced intrusion was quantified. The impacts of the cyclonic eddy and the anticyclonic eddy were opposite. Under the impact of cyclonic (anticyclonic) eddy, the total onshore intrusion between 122 degrees E and 124 degrees E across the 200 m isobaths was decreased (increased) by 15.7% (7.3%), while the onshore intrusion west of 122.6 degrees E and the northeastward current on the outer shelf were increased (decreased) by 30.6% (4.7%) and 31% (10.1%), respectively. The arrival of cyclonic (anticyclonic) eddy brought positive (negative) potential vorticity (PV) flux and modulated the local ocean vertical stratification, which weakened (enhanced) the cross-slope PV gradient and the shelf slope constraint on the upper layer current and, therefore, favored (inhibited) the Kuroshio onshore intrusion.
关键词	Eddy Kuroshio Intrusion
DOI	10.1002/2016JC012263
收录类别	SCI
语种	英语
WOS记录号	WOS:000402139900022
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136874
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanog, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 3.Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China 4.North Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC USA
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yin, Yuqi,Lin, Xiaopei,He, Ruoying,et al. Impact of mesoscale eddies on Kuroshio intrusion variability northeast of Taiwan[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2017,122(4):3021-3040.
APA	Yin, Yuqi,Lin, Xiaopei,He, Ruoying,&Hou, Yijun.(2017).Impact of mesoscale eddies on Kuroshio intrusion variability northeast of Taiwan.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,122(4),3021-3040.
MLA	Yin, Yuqi,et al."Impact of mesoscale eddies on Kuroshio intrusion variability northeast of Taiwan".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 122.4(2017):3021-3040.

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