An isopycnic-coordinate internal tide model and its application to the South China Sea

Chunbao Miao; Haibo Chen; Xianqing Lü

doi:10.1007/s00343-011-1023-5

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An isopycnic-coordinate internal tide model and its application to the South China Sea

OriginalPaper | Updated：2023-05-16

- An isopycnic-coordinate internal tide model and its application to the South China Sea
- An isopycnic-coordinate internal tide model and its application to the South China Sea
- 海洋湖沼学报（英文） 2011年29卷第6期页码：1339-1356
- Affiliations：
  
  Laboratory of Physical Oceanography Ocean University of China
- Author bio：
- Funds：
  
  Supported by the National High Technology Research and Development Program of China (863 Program) (Nos. 2007AA09Z118, 2008AA09A402);the National Natural Science Foundation of China (No. 41076006);the International Cooperate Fund of NNSFC (No. 40810104046);and the Program for New Century Excellent Talents in University (111 Project) (No. B07036)
- DOI：10.1007/s00343-011-1023-5
  中图分类号：
- 网络首发：2011-10-25，
  
  纸质出版：2011
- Accepted：
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An isopycnic-coordinate internal tide model and its application to the South China Sea[J]. 海洋湖沼学报（英文）, 2011,29(6):1339-1356.

Miao, C., Chen, H. & Lü, X. An isopycnic-coordinate internal tide model and its application to the South China Sea., Chin. J. Ocean. Limnol. 29, 1339–1356 (2011). https://doi.org/10.1007/s00343-011-1023-5
An isopycnic-coordinate internal tide model and its application to the South China Sea[J]. 海洋湖沼学报（英文）, 2011,29(6):1339-1356. DOI： 10.1007/s00343-011-1023-5.

Miao, C., Chen, H. & Lü, X. An isopycnic-coordinate internal tide model and its application to the South China Sea., Chin. J. Ocean. Limnol. 29, 1339–1356 (2011). https://doi.org/10.1007/s00343-011-1023-5 DOI：

摘要

Abstract

A three-dimensional isopycnic-coordinate ocean model for the study of internal tides is presented. In this model

the ocean interior is viewed as a stack of isopycnic layers

each characterized by a constant density. The isopycnic coordinate performs well at tracking the depth variance of the thermocline

and is suitable for simulation of internal tides. This model consists of external and internal modes

and barotropic and baroclinic motions are calculated in the two modes

respectively. The capability of simulating internal tides was verified by comparing model results with an analytical solution. The model was then applied to the simulation of internal tides in the South China Sea (SCS) with the forcing of M2 and K1 tidal constituents. The results show that internal tides in the SCS are mainly generated in the Luzon Strait. The generated M2 internal tides propagate away in three different directions (branches). The branch with the widest tidal beam propagates eastward into the Pacific Ocean

the most energetic branch propagates westward toward Dongsha Island

and the least energetic branch propagates southwestward into the basin of the SCS. The generated K1 internal tides propagate in two different directions (branches). One branch propagates eastward into the Pacific Ocean

and the other branch propagates southwestward into the SCS basin. The steepening process of internal tides due to shoaling effects is described briefly. Meridionally integrated westward energy fluxes into the SCS are comparable to the meridionally integrated eastward energy fluxes into the Pacific Ocean.

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references

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