| 引用本文： |
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陈波,侍茂崇,郭佩芳,高劲松,陈宪云.北部湾北部潮流谱分析和余流特征研究[J].广西科学,2014,21(1):54-63. [点击复制]
- CHEN Bo,SHI Mao-chong,GUO Pei-fang,GAO Jing-song,CHEN Xian-yun.Analysis of Tidal Current Spectrum and Study of Residual Current in Northern Beibu Gulf[J].Guangxi Sciences,2014,21(1):54-63. [点击复制]
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| 摘要: |
| [目的]研究北部湾北部的潮流谱和余流特征。[方法]利用1988年10月至1989年8月的涠洲岛附近10m、20m和30m海流观测资料进行谱分析。[结果]无论频率f>0或f<0,全日潮谱峰都高于半日潮谱峰。其中,主要半日潮周期为12h、12.4h,主要日潮周期分别为23.9h和25.8h。在半日潮和全日潮分量中,顺时针分量是主要的。从余流前进矢量可以看出:冬半年,10m、20m和30m层平均余流矢量方向分别为302°、338°和43°。夏季,10m、20m和30m层平均余流矢量方向分别为246°、298°和292°。[结论]风对1988年10月至1989年2月余流影响明显,但是制约余流运动的主要因素是北部湾北部环流。 |
| 关键词: 北部湾 谱分析 潮流 余流 |
| DOI： |
| 投稿时间：2013-09-04 |
| 基金项目:国家自然科学基金(批准号:41266002)资助。 |
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| Analysis of Tidal Current Spectrum and Study of Residual Current in Northern Beibu Gulf |
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CHEN Bo1, SHI Mao-chong2, GUO Pei-fang2, GAO Jing-song1, CHEN Xian-yun1
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| (1.Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China;2.Ocean University of China, Qingdao, Shandong, 266003, China) |
| Abstract: |
| [Objective] To reveal the characteristics of tidal current spectrum and residual current in the northern Beibu Gulf.[Method] The tidal current data at 10m, 20m and 30m layer, respectively, observed near the Weizhou Island from October 1988 to August 1989, were analyzed using the spectrum method.[Result] The peaks of diurnal tidal spectrums were higher than that of semi-diurnal no matter f>0 or f<0.The periods of two major semi-diurnal tides were 12 h and 12.4 h, respectively, whereas the periods of two main diurnal tides were 23.9 h and 25.8 h, respectively. Among the semi-diurnal and diurnal component tides, the clockwise components were dominant. The averaged residual current direction was 302°, 338° and 43° in winter at 10m, 20m and 30m layer, respectively, whereas it was transformed to be 246°, 298° and 292° in summer.[Conclusion] Although the monsoon wind had important effect on the residual current in the Beibu Gulf from October to February, the residual currents in the northern Beibu Gulf was dominated by the general circulation structure in the Beibu Gulf. |
| Key words: Beibu Gulf spectrum analysis tidal current residual current |
