Cases Study of Nonlinear Interaction Between Near-Inertial Waves Induced by Typhoon and Diurnal Tides Near the Xisha Islands
Liu, JL; He, YH; Li, J; Cai, SQ; Wang, DX; Huang, YD; caisq@scsio.ac.cn
2018
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号123期号:4页码:2768-2784
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+D-1, hereafter referred to as fD(1) wave), with a frequency equal to the sum of frequencies of NIWs and DTs (hereafter referred to as f and D-1, respectively), was generated via nonlinear interaction between typhoon-induced NIWs and DTs after each typhoon. The fD(1) 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 fD(1) current. The larger the Component 1, the stronger the fD(1) 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 fD(1) wave and enhances the fD(1) currents after the passage of a typhoon.
部门归属[Liu, Junliang; He, Yinghui; Li, Juan; Cai, Shuqun; Wang, Dongxiao; Huang, Yandan] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Huang, Yandan] Univ Chinese Acad Sci, Beijing, Peoples R China
关键词Near-inertial Waves Diurnal Tides Nonlinear Interaction Typhoon Anticyclonic Eddy South China Sea
学科领域Oceanography
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17080
专题热带海洋环境国家重点实验室(LTO)
通讯作者caisq@scsio.ac.cn
推荐引用方式
GB/T 7714
Liu, JL,He, YH,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,2018,123(4):2768-2784.
APA Liu, JL.,He, YH.,Li, J.,Cai, SQ.,Wang, DX.,...&caisq@scsio.ac.cn.(2018).Cases Study of Nonlinear Interaction Between Near-Inertial Waves Induced by Typhoon and Diurnal Tides Near the Xisha Islands.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(4),2768-2784.
MLA Liu, JL,et al."Cases Study of Nonlinear Interaction Between Near-Inertial Waves Induced by Typhoon and Diurnal Tides Near the Xisha Islands".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.4(2018):2768-2784.
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