Observed Near Inertial Waves in the Wake of Typhoon Linfa (2015) in the Northern South China Sea

doi:10.1007/s11802-019-4081-5

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	Observed Near Inertial Waves in the Wake of Typhoon Linfa (2015) in the Northern South China Sea
	Wang Guanlin 1,2,3; Li Dawei 2,3; Wei Zexun 2,3; Li Shujiang 2,3; Wang Yonggang 2,3; Xu Tengfei 2,3
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2019-10
卷号	18 期号:5 页码:1013-1021
关键词	South China Sea near inertial waves typhoon Linfa
ISSN号	1672-5182
DOI	10.1007/s11802-019-4081-5
英文摘要	This study examined the characteristics and vertical propagation of near inertial waves (NIWs) induced by Typhoon Linfa (2015), based on in situ observations conducted southeast of Dongsha Islands in the South China Sea. The results demonstrate that the near inertial currents induced by Linfa had velocities up to 35cm s(-1) in the mixed layer and 20cm s(-1) in the ocean interior. The near inertial currents were polarized with predominantly clockwise-rotating components, the magnitudes of which were about 10 times larger than the counter-clockwise rotating components. The energy density spectrum showed that the emergence of NIWs resulted in energy redistribution from the diurnal band to the near inertial band. The wavenumber spectrum and the downward/ upward current decomposition demonstrated that the NIWs and energy flux propagated mainly downward. The estimated vertical phase velocity and group velocity are 1.44 and 0.48m h(-1), respectively, corresponding to a vertical wavelength of 49.7m. The e-folding time scale was 7.5 d based on the near inertial kinetic energy in the ocean interior. We found no obvious wave-wave interaction during the decay process of the NIWs. The frequency was blue-shifted, being 0.03f(0) higher than the local inertial frequency, which was caused by the background vorticity. The normal mode analysis suggests that the higher mode plays a dominant role in the propagation stage of the NIWs.
资助项目	NSFC-Shandong Joint Fund for Marine Science Re-search Centers[U1606405]
WOS研究方向	Oceanography
语种	英语
出版者	OCEAN UNIV CHINA
WOS记录号	WOS:000482849800002
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30106]
专题	业务部门_海洋环境与数值模拟研究室
通讯作者	Wei Zexun
作者单位	1.Natl Univ Def Technol, Coll Meteorol & Oceanog, Nanjing 211101, Jiangsu, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Numer Modeling, Qingdao 266237, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wang Guanlin,Li Dawei,Wei Zexun,et al. Observed Near Inertial Waves in the Wake of Typhoon Linfa (2015) in the Northern South China Sea[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2019,18(5):1013-1021.
APA	Wang Guanlin,Li Dawei,Wei Zexun,Li Shujiang,Wang Yonggang,&Xu Tengfei.(2019).Observed Near Inertial Waves in the Wake of Typhoon Linfa (2015) in the Northern South China Sea.JOURNAL OF OCEAN UNIVERSITY OF CHINA,18(5),1013-1021.
MLA	Wang Guanlin,et al."Observed Near Inertial Waves in the Wake of Typhoon Linfa (2015) in the Northern South China Sea".JOURNAL OF OCEAN UNIVERSITY OF CHINA 18.5(2019):1013-1021.