Abstract
Based on the z-coordinate ocean model HAMSOM, we introduced the internal-tide viscosity term and applied the model to numerically investigate the M2 internal tide generation and propagation in the Luzon Strait (LS). The results show that (1) in the upper 250 m depth, at the thermocline, the maximum amplitude of the generated internal tides in the LS can reach 40 m; (2) the major internal tides are generated to the northwest of Itbayat Island, the southwest of Batan Island and the northwest of the Babuyan Islands; (3) during the propagation the baroclinic energy scattering and reflection is obvious, which exists under the effect of the specific topography in the South China Sea (SCS); (4) the westward-propagating internal tides are divided into two branches entering the SCS. While passing through 118°E, the major branch is divided into two branches again. The strongest internal tides in the LS are generated to the northwest of Itbayat Island and propagate northeastward to the Pacific. However, to the east of 122°E, most of the internal tides propagate southeastward to the Pacific as a beam.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Backhaus J O. 1985. A three-dimensional model for the simulation of shelf sea dynamics. Ocean Dynamics, 38(4): 165–187
Carton J A, Chepurin G, Cao X. 2000a. A simple ocean data assimilation analysis of the global upper ocean 1950–1995: Part II. Results. Journal of Physical Oceanography, 30(2): 311–326
Carton J A, Chepurin G, Cao X, et al. 2000b. A simple ocean data assimilation analysis of the global upper ocean 1950–95: Part I. Methodology. Journal of Physical Oceanography, 30(2): 294–309
Cummins P, Oey L. 1997. Simulation of barotropic and baroclinic tides off northern British Columbia. Journal of Physical Oceanography, 27: 762–781
Du Tao, Wu Wei, Fang Xinhua. 2001. The generation and distribution of ocean internal waves. Marine Sciences (in Chinese), 25(4): 25–27
Egbert G D, Erofeeva S Y. 2002. Efficient inverse modeling of barotropic ocean tides. Journal of Atmospheric and Oceanic Technology, 19(2): 183–204
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
Gao Kun, Chen Xueen, et al. 2010. The influence of internal tide on the diagnostic calculation of geostrophic current in Luzon Strait. Periodical of Ocean University of China (in Chinese), 40(2): 9–16
Guo Chuncheng, Chen Xueen, Vlasenko V, et al. 2011. Numerical investigation of internal solitary waves from the Luzon Strait: Generation process, mechanism and three-dimensional effects. Ocean Modelling, 38: 203–216
Holloway P E. 2001. A regional model for the semidiurnal tide on the Australian north west shelf. Journal of Geophysical Research, 106: 19625–19637
Jan S, Chern C S, Wang J, et al. 2007. Generation of diurnal K1 internal tide in the Luzon Strait and its influence on surface tide in the South China Sea. Journal of Geophysical Research, 112: C06019, doi: 10.1029/2006JC004003
Johnston T M S, Merrifield M A. 2003. Internal tide scattering at seamounts, ridges, and islands. Journal of Geophysical Research, 108(C6): 3180. doi:10.1029/2002JC001528
Lien R C, Tang T Y, Chang M H, et al. 2005. Energy of nonlinear internal waves in the South China Sea. Geophysical Research Letters, 32: L05615, doi: 10.1029/2004GL22012
Nash J D, Kunze E, Toole J M, et al. 2005. Structure of the Baroclinic Tide Generated at Kaena Ridge, Hawaii. Journal of Physical Oceanography, 36: 1123–1135
Niwa Y, Hibiya T. 2004. Three-dimensional numerical simulation of M2 internal tides in the East China Sea. Journal of Geophysical Research, 109: C04027, doi: 10.1029/2003JC001923
Shen Hui, He Yijun. 2006. SAR imaging simulation of horizontal fully two-dimensional internal waves. Journal of Hydrodynamics, 18(3): 294–302
Song Dan, Thomas P, Chen Xueen, et al. 2010. The role of seawater viscidity in modeling the vertical movement of internal tides. Ocean Modelling, 34(3–4): 63–69, doi: 10.1016/j.ocemod.2010.04.005
Vlasenko V, Stashchuk N, Guo C, et al. 2010. Multimodal structure of baroclinic tides in the South China Sea, Nonlin. Processes Geophys, 17: 529–543
Wu Ruizhong. 2008. A Numerical Study on Internal Wave Generate by Tidal Motion in the Luzon Strait (in Chinese). Taiwan: National Sun Yat-sen University Press
Wu Ziku. 2005. The Study of the Internal Tide 3-D Numerical Simulation with Assimilation in the South China Sea (in Chinese). Qingdao: Ocean University of China Press
Yang Qingxuan. 2008. Study on the Fluxes in the Luzon Strait and Turbulent Mixing in the South China Sea (in Chinese). Qingdao: Ocean University of China Press
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: The Public Science and Technology Research Funds Projects of Ocean under contract Nos 200905001 and 201005019; the National Natural Science Foundation of China under contract No.41006002.
Rights and permissions
About this article
Cite this article
Li, H., Song, D., Chen, X. et al. Numerical study of M2 internal tide generation and propagation in the Luzon Strait. Acta Oceanol. Sin. 30, 23–32 (2011). https://doi.org/10.1007/s13131-011-0144-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13131-011-0144-1