DOI: 10.1029/2017JC013555
Scopus记录号: 2-s2.0-85045854519
论文题名: Cases Study of Nonlinear Interaction Between Near-Inertial Waves Induced by Typhoon and Diurnal Tides Near the Xisha Islands
作者: Liu J. ; He Y. ; Li J. ; Cai S. ; Wang D. ; Huang Y.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 4 起始页码: 2768
结束页码: 2784
语种: 英语
英文关键词: anticyclonic eddy
; diurnal tides
; near-inertial waves
; nonlinear interaction
; South China Sea
; typhoon
Scopus关键词: anticyclone
; diurnal variation
; eddy
; harmonic analysis
; in situ measurement
; momentum
; momentum transfer
; nonlinearity
; ocean wave
; subsurface flow
; typhoon
; Pacific Ocean
; Paracel Islands
; South China Sea
; South China Sea
英文摘要: Nonlinear interaction between near-inertial waves (NIWs) and diurnal tides (DTs) after nine typhoons near the Xisha Islands of the northwestern South China Sea (SCS) were investigated using three-year in situ mooring observation data. It was found that a harmonic wave (f + D1, hereafter referred to as fD1 wave), with a frequency equal to the sum of frequencies of NIWs and DTs (hereafter referred to as f and D1, respectively), was generated via nonlinear interaction between typhoon-induced NIWs and DTs after each typhoon. The fD1 wave mainly concentrates in the subsurface layer, and is mainly induced by the first component of the vertical nonlinear momentum term, the product of the vertical velocity of DT and vertical shear of near-inertial current (hereafter referred to as Component 1), in which the vertical shear of the near-inertial current greatly affects the strength of the fD1 current. The larger the Component 1, the stronger the fD1 currents. The background preexisting mesoscale anticyclonic eddy near the mooring site may also enhance the vertical velocity of DT and thus Component 1, which subsequently facilitates the nonlinear interaction-induced energy transfer to the fD1 wave and enhances the fD1 currents after the passage of a typhoon. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114143
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Liu J.,He Y.,Li J.,et al. Cases Study of Nonlinear Interaction Between Near-Inertial Waves Induced by Typhoon and Diurnal Tides Near the Xisha Islands[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(4)