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| 广东流沙湾4个测站2个周日潮流观测的准调和分析 | |
| 引用本文： | 张静,孙省利,吴灶和,陈春亮,张瑜斌.广东流沙湾4个测站2个周日潮流观测的准调和分析[J].台湾海峡,2010,29(3):408-413. |
| 作者姓名： | 张静 孙省利 吴灶和 陈春亮 张瑜斌 |
| 作者单位： | 1. 广东海洋大学水产学院,广东,湛江,524025 2. 广东海洋大学海洋资源与环境监测中心,广东,湛江,524025 3. 广东海洋大学广东省水产经济动物病原生物学及流行病学重点实验室,广东,湛江,524025 |
| 基金项目： | 广东省科技计划资助项目 |
| 摘 要： | 采用短期资料的潮流准调和分析方法,对水深为4.4～17.0 m的流沙湾4个测站2个周日潮流观测获得的表、中、底层的潮流资料进行了分析,分别计算了4个测站O1、K1、M2、S2、M4、MS4共6个主要分潮的潮流调和常数,并给出了各观测站位在各层的潮流椭圆要素.计算结果表明：流沙湾主要为日潮流海区,其中湾外为规则日潮流,湾内为不规则日潮流;湾外主要分潮流的北分量一般大于东分量,而湾内主要分潮流的北分量一般小于东分量.观测期间余流的流向主要呈西北向,最大余流流速出现在湾内地形突然收窄处,且在湾内中层余流流速要大于表、底层余流流速.整个海区潮流的可能最大流速表层在57～107 cm/s之间,中层在53～106 cm/s之间,底层在34～98 cm/s之间.流沙湾湾外潮流主要为顺时针的旋转流运动,湾内为带有旋转流的往复流运动. |
| 关 键 词： | 海洋动力学 潮流 准调和分析 余流 周日变化 流沙湾 |
Quasi-harmonic analysis of tidal current data collected over two days from four anchored stations in Liusha Bay,Guangdong Province |
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| ZHANG Jing,SUN Xing-li,WU Zao-he,CHEN Chun-liang,ZHANG Yu-bin.Quasi-harmonic analysis of tidal current data collected over two days from four anchored stations in Liusha Bay,Guangdong Province[J].Journal of Oceanography In Taiwan Strait,2010,29(3):408-413. | |
| Authors: | ZHANG Jing SUN Xing-li WU Zao-he CHEN Chun-liang ZHANG Yu-bin |
| Institution: | 1.Fishery College,Guangdong Ocean University,Zhanjiang 524025,China;2.Monitoring Center for Marine Resources and Environment,Guangdong Ocean University,Zhanjiang 524025,China;3.Guangdong Provincial Key Lab of Pathogenic Biology and Epidemiology for Aquatic Economic Animals,Guangdong Ocean University,Zhanjiang 524025,China) |
| Abstract: | Based on the tidal current quasi-harmonic method for short-term data,series tidal current data collected over two days from the surface,middle and bottom layers（with depth from 4.4to 17.0m） at four anchored stations in Liusha Bay were analyzed.The harmonic coefficients of O1,K1,M2,S2,M4 and MS4 were calculated,and the tidal current ellipse factors of all layers at the four anchored stations were given.The results showed that the tidal current in Liusha Bay was classified as a diurnal tidal current,while that in the outer bay was a regular diurnal tidal current and that of the inner bay was irregular.The northern component of the constituents was generally stronger than the eastern component in the outer bay,but this relationship was reversed in the inner bay.The main direction of the residual current during the observation time was northwest,the maximum velocity of the residual current occurred at the abruptly narrowed area of the inner bay,and the velocity of the residual current at the middle layer was larger than in other areas.The maximum possible velocity in the sea area was between 57 and 107 cm/s at the surface,53～106 cm/s in the middle layer and 34～98 cm/s at the bottom.The diurnal tidal current in the outer bay was a clockwise rotary current,while there was a rectilinear current with a rotary current in the inner bay. |
| Keywords: | ocean dynamics tidal current quasi-harmonic analysis residual current diurnal variation Liusha Bay |
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