王昭允,牛嘉路,于海庆,黄晓冬,于华明,赵玮

• 1:中国海洋大学海洋与大气学院
• 2:中国海洋大学水产学院
• 3:中国海洋大学物理海洋教育部重点实验室

摘要(Abstract)：

基于潮汐-环流耦合的FVCOM数值模式,本文以南海北部全日内潮为例探究了中尺度涡对内潮传播的影响。分析结果表明,暖涡和冷涡分别导致全日内潮向西北和西南方向折射,能通量方向最大变化可达40°;全日内潮能通量大小在子午向呈现反相位变化,在暖涡南部(冷涡北部)边缘显著减小,而在暖涡北部(冷涡南部)边缘明显增大,最大变化幅度达25%;在暖涡南部和冷涡北部,西向背景流导致全日内潮传播相速度分别加快0.7和0.3 m/s,进而引起内潮波峰线向西凸起弯曲。本研究结果对深化理解多尺度背景下的南海北部内波和深海混合时空变化特征具有重要意义。

关键词(KeyWords)： 内潮;中尺度涡;传播;数值模拟;南海

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41676011,41976008)资助~~

作者(Author): 王昭允,牛嘉路,于海庆,黄晓冬,于华明,赵玮

DOI: 10.16441/j.cnki.hdxb.20200198

参考文献(References)：

• [1] Wunsch C.Internal tides in the ocean[J].Reviews of Geophysics,1975,13(1):167-182.
• [2] Polzin K L,Toole J M,Ledwell J R,et al.Spatial variability of turbulent mixing in the abyssal ocean[J].Science,1997,276(5309):93-96.
• [3] Egbert G D,Ray R D.Significant dissipation of tidal energy in the deep ocean inferred from satellite altimeter data[J].Nature,2000,405(6788):775-778.
• [4] Munk W,Wunsch C.Abyssal recipes II:Energetics of tidal and wind mixing[J].Deep Sea Research Part I:Oceanographic Research Papers,1998,45(12):1977-2010.
• [5] Melet A,Hallberg R,Legg S,et al.Sensitivity of the ocean state to the vertical distribution of internal-tide-driven mixing[J].Journal of Physical Oceanography,2013,43(3):602-615.
• [6] Chelton D B,Schlax M G,Freilich M H,et al.Satellite measurements reveal persistent small-scale features in ocean winds[J].Science,2004,303(5660):978-983.
• [7] Alford M H,Peacock T,Mackinnon J A,et al.The formation and fate of internal waves in the South China Sea[J].Nature,2015,521(7550):65-69.
• [8] Zhao Z.Internal tide radiation from the Luzon Strait[J].Journal of Geophysical Research,2014,119(C4):5434-5448.
• [9] Jan S,Lten R C,Ting C H.Numerical study of baroclinic tides in Luzon Strait[J].Journal of Oceanography,2008,64(5):789-802.
• [10] Chen G,Hou Y,Chu X.Mesoscale eddies in the South China Sea:Mean properties,spatiotemporal variability,and impact on thermohaline structure[J].Journal of Geophysical Research Oceans,2011,116(C6):C06018.
• [11] Nan F,Xue H,Chai F,et al.Identification of different types of Kuroshio intrusion into the South China Sea[J].Ocean Dynamics,2011,61(9):1291-1304.
• [12] Zhang Z,Zhao W,Qiu B,et al.Anticyclonic eddy sheddings from Kuroshio loop and the accompanying cyclonic eddy in the northeastern South China Sea[J].Journal of Physical Oceanography,2017,47(6):1243-1259.
• [13] Zhang Z,Zhao W,Tian J,et al.A mesoscale eddy pair southwest of Taiwan and its influence on deep circulation[J].Journal of Geophysical Research Oceans,2013,118(12):6479-6494.
• [14] Zhao R,Zhu X H,Park J H,et al.Internal tides in the northwestern South China Sea observed by pressure-recording inverted echo sounders[J].Progress in Oceanography,2018,168:112-122.
• [15] Xu Z,Liu K,Yin B,et al.Long-range propagation and associated variability of internal tides in the South China Sea[J].Journal of Geophysical Research:Oceans,2016,121(11):8268-8286.
• [16] Huang X,Wang Z,Zhang Z,et al.Role of mesoscale eddies in modulating the semidiurnal internal tide:Observation results in the northern South China Sea[J].Journal of Physical Oceanography,2018,48(8):1749-1770.
• [17] Klymak J M,Alford M H,Pinkel R,et al.The breaking and scattering of the internal tide on a continental slope[J].Journal of Physical Oceanography,2011,41(5):926-945.
• [18] Tian J,Yang Q,Zhao W:Enhanced diapycnal mixing in the South China Sea[J].Journal of Physical Oceanography,2009,39(12):3191-3203.
• [19] Wang X,Liu Z,Peng S.Impact of tidal mixing on water mass transformation and circulation in the South China Sea[J].Journal of Physical Oceanography,2016,47(2):419-432.
• [20] Wang X,Peng S,Liu Z,et al.Tidal mixing in the South China Sea:An estimate based on the internal tide energetics[J].Journal of Physical Oceanography,2015,46(1):107-124.
• [21] Egbert G D,Erofeeva S Y.Efficient inverse modeling of barotropic ocean tides[J].J Atmos Oceanic Technol,2002,19(2):183-204.
• [22] Fang G,Kwok Y K,Yu K,et al.Numerical simulation of principal tidal constituents in the South China Sea,Gulf of Tonkin and Gulf of Thailand[J].Continental Shelf Research,1999,19(7):845-869.
• [23] Alford M H,Mackinnon J A,Nash J D,et al.Energy flux and dissipation in Luzon Strait:Two tales of two ridges[J].Journal of Physical Oceanography,2011,41(11):2211-2222.
• [24] Buijsman M C,Maarten C,Klymak J M,et al.Three-dimensional double-ridge internal tide resonance in Luzon Strait[J].Physical Oceanography,2013,44(3):850-869.
• [25] Buijsman M C,Maarten C,Arbic B,et al.Semidiurnal internal tide incoherence in the equatorial Pacific[J].Journal of Geophysical Research:Oceans,2017,122(7):5286-5305.
• [26] Nash J D,Kelly S M,Shroyer E L,et al.The unpredictable nature of internal tides on continental shelves[J].Journal of Physical Oceanography,2012,42(11):1981-2000.
• [27] Pickering A,Alford M H,Nash J D,et al.Structure and variability of internal tides in Luzon Strait[J].Journal of Physical Oceanography,2015,45(6):1574-1594.

文章评论(Comment)：