Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific

Kun Liu; Zhenhua Xu; Baoshu Yin

doi:10.1007/s00343-017-5376-2

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Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific

Updated：2023-05-16

- Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific
- Journal of Oceanology and Limnology Vol. 35, Issue 6, Pages: 1275-1286(2017)
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. Key Laboratory of Ocean Circulation and Waves (KLOCAW) Chinese Academy of Sciences
  3. University of Chinese Academy of Sciences
  4. Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and Technology
- Author bio：
- Funds：
- DOI：10.1007/s00343-017-5376-2
  CLC：
- Online First：26 January 2017，
  
  Published：2017
- Accepted：
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Liu, K., Xu, Z. & Yin, B. Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific., Chin. J. Ocean. Limnol. 35, 1275–1286 (2017). https://doi.org/10.1007/s00343-017-5376-2
DOI：

Liu, K., Xu, Z. & Yin, B. Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific., Chin. J. Ocean. Limnol. 35, 1275–1286 (2017). https://doi.org/10.1007/s00343-017-5376-2 DOI：

摘要

Abstract

Recent satellite altimeter observations have indicated that internal tides (ITs) from the Luzon Strait (LS) propagate more than 2 500 km into the Western Pacific (WP). This study used a high-resolution three-dimensional numerical model to reproduce and examine the ITs radiation process. The propagation of diurnal and semidiurnal ITs showed different patterns and variations. Diurnal ITs with lower frequency were affected more by the earth’s rotation and they were bent more toward the equator than semidiurnal ITs. ITs phase speeds are functions of latitude and diurnal ITs showed greater distinctions of phase speeds during propagation. For M2 ITs

the wavelength remained nearly unchanged but the beam width increased significantly during propagation away from the LS. For diurnal ITs (K1 and O1)

the wavelength decreased noticeably with latitude

while the beam width varied little during propagation because of blocking by land. Baroclinic energy was also examined as a complement to satellite results reported by Zhao (2014). The magnitude of the generated baroclinic energy flux reduced remarkably within 300 km from the generation site but it then decayed slowly when propagating into abyssal sea. Baroclinic energy of diurnal ITs was found to dissipate at a slower rate than semidiurnal ITs along the main propagation path in the WP.

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references

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