Coherent and incoherent internal tides in the southern South China Sea

Qian Liu; Xiaohui Xie; Xiaodong Shang; Guiying Chen

doi:10.1007/s00343-016-5171-5

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Coherent and incoherent internal tides in the southern South China Sea

Updated：2023-05-16

- Coherent and incoherent internal tides in the southern South China Sea
- Journal of Oceanology and Limnology Vol. 34, Issue 6, Pages: 1374-1382(2016)
- Affiliations：
  
  1. State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology Chinese Academy of Sciences
  2. University of Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-016-5171-5
  CLC：
- Online First：14 March 2016，
  
  Published：2016
- Accepted：
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Liu, Q., Xie, X., Shang, X. et al. Coherent and incoherent internal tides in the southern South China Sea., Chin. J. Ocean. Limnol. 34, 1374–1382 (2016). https://doi.org/10.1007/s00343-016-5171-5
DOI：

Liu, Q., Xie, X., Shang, X. et al. Coherent and incoherent internal tides in the southern South China Sea., Chin. J. Ocean. Limnol. 34, 1374–1382 (2016). https://doi.org/10.1007/s00343-016-5171-5 DOI：

摘要

Abstract

Coherent and incoherent internal tides (CITs and ICITs) in the southern South China Sea were investigated from two sets of 18-month mooring current records. The CITs were mainly composed of diurnal Q 1

O 1

P 1 and K 1 and semidiurnal M 2. The observed diurnal internal tides (ITs) were more coherent than the semidiurnal constituents. Coherent diurnal variance accounted for approximately 58% of the diurnal motion

whereas semidiurnal tides contained a much smaller fraction (35%) of coherent motion. The ICITs mainly consisted of motion at non-tidal harmonic frequencies around the tidal frequency

and showed clear intermittency. The modal decomposition of CITs and ICITs showed that CITs were dominated by mode- 1

whereas mode-1 and higher modes in ICITs signals showed comparable amplitudes. CITs and ICITs accounted for approximately 64% and 36% of the total kinetic energy of internal tides

respectively.

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references

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