A possible generation mechanism of the strong current over the northwestern shelf of the South China Sea

WANG Gang; QIAO Fangli; DAI Dejun; HOU Yijun

doi:10.1007/s13131-011-0116-5

A possible generation mechanism of the strong current over the northwestern shelf of the South China Sea

doi: 10.1007/s13131-011-0116-5

1.
Key laboratory of Data Analysis and Applications(LDAA), Key laboratory of Marine Science and Numerical Modeling(MASNUM), First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

基金项目: the National Natural Science Foundation of China under contract Nos 41006018 and 40730842, The National Basic Research Program (973 Program) of China under contract No. 2011CB403502, the National High Technology Research and Development Program (863 Program) of China under contract No. 2008AA09A402, Open Fund of the Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences under contract No. KLOCAW0905.

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- 文章访问数: 349
- HTML全文浏览量: 44
- PDF下载量: 140
- 被引次数: 0
出版历程
- 收稿日期: 2007-08-02
- 修回日期: 2010-02-06

A possible generation mechanism of the strong current over the northwestern shelf of the South China Sea

1.
Key laboratory of Data Analysis and Applications(LDAA), Key laboratory of Marine Science and Numerical Modeling(MASNUM), First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

摘要

摘要: Continuous observation in late April 2005 on the northwestern shelf of the South China Sea reveals vigorous strong currents, the maximum velocity of which exceeds 3.8 m/s. The strong currents occurred around spring tide period, when the internal tide waves were also expected to be vigorous. Analysis shows that the major peaks of the current power spectrum are in low frequency band. Using a numerical method applied to the actual ocean stratification, we find that the amplitude profiles of the strong current are similar to that of the currents induced by some low-mode internal waves (at diurnal or semi-diurnal frequency). It indicates that the temporal and spatial features of strong currents were possibly induced by low frequency internal waves.
- strongcurrent /
- internalwaves /
- Brunt-Väisäläfrequency
Abstract: Continuous observation in late April 2005 on the northwestern shelf of the South China Sea reveals vigorous strong currents, the maximum velocity of which exceeds 3.8 m/s. The strong currents occurred around spring tide period, when the internal tide waves were also expected to be vigorous. Analysis shows that the major peaks of the current power spectrum are in low frequency band. Using a numerical method applied to the actual ocean stratification, we find that the amplitude profiles of the strong current are similar to that of the currents induced by some low-mode internal waves (at diurnal or semi-diurnal frequency). It indicates that the temporal and spatial features of strong currents were possibly induced by low frequency internal waves.
- strong current /
- internal waves /
- Brunt-Väisälä frequency

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文章访问数: 349
HTML全文浏览量: 44
PDF下载量: 140
被引次数: 0

A possible generation mechanism of the strong current over the northwestern shelf of the South China Sea

doi: 10.1007/s13131-011-0116-5

计量

出版历程

A possible generation mechanism of the strong current over the northwestern shelf of the South China Sea

计量

出版历程

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