Effects of Tidal Currents on Nonlinear Internal Solitary Waves in the South China Sea

被引：0

作者：

FAN Zhisong ^{[1
]}

SHI Xingang ^{[2
]}

Antony K. Liu ^{[3
]}

LIU Hailong ^{[4
]}

LI Peiliang ^{[1
]}

机构：

[1] College of Physical and Environmental Oceanography, Ocean University of China

[2] Beijing Branch of CNOOC Energy Technology and Services Limited

[3] Ocean Sciences Branch, NASA Goddard Space Flight Center

[4] State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences

来源：

JournalofOceanUniversityofChina | 2013年 / 12卷 / 01期

基金：

中国国家自然科学基金;

关键词：

internal solitary waves; tidal current; fission process; the South China Sea;

D O I：

暂无

中图分类号：

P731.2 [海洋动力学];

学科分类号：

0707 ;

摘要：

The propagation and fission process of internal solitary waves (ISWs) with amplitudes of about 170 m are simulated in the northeast of the South China Sea (NSCS) by using the generalized Korteweg-de Vries (KdV) equation under continuous stratification. More attention is paid to the effects of the ebb and flood background currents on the fission process of ISWs. This kind of background current is provided by the composed results simulated in terms of monthly mean baroclinic circulation and barotropic tidal current. It is found that the obtained relation of the number of fission solitons to the water depth and stratification is roughly in accordance with the fission law derived by Djordjevic and Redekopp in 1978; however, there exists obvious difference between the effects of the ebb and flood background currents on the wave-lengths of fission solitons (defined as the distance between two neighboring peaks of ISWs). The difference in nonlinearity coefficient α between the ebb and flood background currents is a main cause for the different wave-lengths of fission solitons.

引用

页码：13 / 22

页数：10

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