WANG Jing, SUN Meiling, ZHANG Xudong, SUN Lina, MENG Junmin. A numerical study of the generation mechanism of internal solitary waves in the Luzon Strait[J]. Acta Oceanologica Sinica, 2015, 34(7): 38-43. doi: 10.1007/s13131-015-0695-7
Citation: WANG Jing, SUN Meiling, ZHANG Xudong, SUN Lina, MENG Junmin. A numerical study of the generation mechanism of internal solitary waves in the Luzon Strait[J]. Acta Oceanologica Sinica, 2015, 34(7): 38-43. doi: 10.1007/s13131-015-0695-7

A numerical study of the generation mechanism of internal solitary waves in the Luzon Strait

doi: 10.1007/s13131-015-0695-7
  • Received Date: 2014-08-08
  • Rev Recd Date: 2014-11-13
  • The South China Sea (SCS) is a hot spot for oceanic internal solitary waves due to many factors, such as the complexity of the terrain environment. The internal solitary waves in the northern SCS mainly originate in the Luzon Strait. The generation mechanism of the internal solitary waves in the Luzon Strait is discussed using a modulation instability. The energy gain of the modulation instability is derived based on the fully nonlinear Schrödinger equation. The peak value of the gain is calculated under different conditions of stratification, wavelength and the initial amplitude of an internal tidal wave. The characteristics of the modulation instability in the Luzon Strait are investigated. The conditions that make the internal tidal wave evolve into an internal solitary wave in the Luzon strait are also obtained. The results show that the internal tide waves can generate the modulation instability in the Luzon Strait and that the maximum gain occur at the eastern sill of the Luzon Strait, where the internal tide waves start to break up into internal solitary trains. The magnitude and the scope of the peak gain are relevant to the stratification and the initial conditions of the internal tide waves. The numerical simulation results are consistent with the in-situ data.
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  • Benjamin T B, Feir J E. 1967. The disintegration of wave trains on deep water: Part 1. Theory. Journal of Fluid Mechanics, 27(3): 417-430
    Buijsman M C, Kanarska Y, McWilliams J C. 2010. On the generation and evolution of nonlinear internal solitary waves in the South China Sea. J Geophys Res, 115(C2): C02012
    Cai Shuqun, Long Xiaomin, Gan Zijun. 2002. A numerical study of the generation and propagation of internal solitary waves in the Luzon Strait. Oceanologica Acta, 25(2): 51-60
    Cai Shuqun, Xie Jieshuo, Xu Jiexin, et al. 2014. Monthly variation of some parameters about internal solitary waves in the South China Sea. Deep-Sea Research Part I: Oceanographic Research Papers, 84: 73-85
    Chao Shennyu, Ko Dongshan, Lien R C, et al. 2007. Assessing the west ridge of Luzon Strait as an internal wave mediator. Journal of Oceanography, 63(6): 897-911
    Du Tao, Tseng Yuheng, Yan Xiaohai. 2008. Impacts of tidal currents and Kuroshio intrusion on the generation of nonlinear internal waves in Luzon Strait. Journal of Geophysical Research: Oceans (1978-2012), 113(C8): C08015
    Fang Xinhua, Du Tao. 2005. Fundamentals of Oceanic Internal waves and Internal waves in the China Seas (in Chinese). Qingdao: China Ocean University Press, 337
    Hasegawa A. 1972. Theory and computer experiment on selftrapping instability of plasma cyclotron waves. Phys Fluids, 15: 870
    Li Qiang, David M F. 2011. The generation and evolution of nonlinear internal waves in the deep basin of the South China Sea. Journal of Physical Oceanography, 41: 1345-1363
    Shaw P T, Ko Dongshan, Chao Shennyu. 2009. Internal solitary waves induced by flow over a ridge: with applications to the northern South China Sea. J Geophys Res, 114(C2): C02019
    Vlasenko V, Guo Chuncheng, Stashchuk N. 2012. On the mechanism of A-type and B-type internal solitary wave generation in the northern South China Sea. Deep-Sea Research Part I: Oceanographic Research Papers, 69: 100-112
    Vlasenko V, Stashchuk N, Guo C, et al. 2010. Multimodal structure of baroclinic tides in the South China Sea. Nonlinear Processes Geophys, 17(5): 529-543
    Wang Jing, Guo Kai, Meng Junmin. 2012. Study of the propagation model for large-amplitude internal solitary waves in deep sea. Chinese Journal of Lasers, 39(s2): s214004
    Warn-Varnas A, Hawkins J, Lamb K G, et al. 2010. Solitary wave generation dynamics at Luzon Strait. Ocean Modelling, 31(1-2): 9-27
    Whitham G B. 1967. Non-linear dispersion of water waves. J Fluid Mech, 27(2): 399-412
    Xu Zhenhua, Yin Baoshu, Hou Yijun. 2011. Response of internal solitary waves to tropical storm Washi in the northwestern South China Sea. Annales Geophysicae, 29(11): 2181-2187
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