水东湾潮流特征分析及三维数值模拟

发布时间：2018-03-17 04:03

本文选题：海洋水文学　切入点：FVCOM　出处：《应用海洋学学报》2017年03期 　论文类型：期刊论文

【摘要】：基于水东湾海域利用现状及水环境综合整治工作的迫切需要,对其海洋水文要素开展野外调查,以清晰理解其潮流特征,并据此进行潮流三维数值模拟.调查结果显示,水东湾观测期间的实测潮差在2.6~2.9 m之间,平均潮差约2.8 m,湾口潮差最大,湾顶海域潮差最小,涨潮历时略长于落潮,属不正规半日潮;各观测站位的最大流速相差较大,最高值出现在湾口深槽,为134 cm/s,最低值出现在湾顶浅海海域,为31 cm/s,最大流速水平分布基本上呈现为从湾口向湾顶递减态势.模拟结果显示,水东湾内潮流基本沿潮汐通道呈往复流动,涨潮流向介于280°~300°之间,流速在0.28~1.36 m/s范围内变化;落潮流向介于128°~180°之间,流速在0.56~1.44 m/s范围内变化,流矢受地形限制显著.
[Abstract]:Based on the present situation of sea area utilization in Shuidong Bay and the urgent need of comprehensive regulation of water environment, a field survey of its marine hydrological elements is carried out in order to clearly understand its tidal current characteristics and carry out three dimensional numerical simulation of tidal current according to the results of the investigation. During the observation period of Shuidong Bay, the measured tidal range is between 2.62.9m, the average tidal difference is about 2.8 m, the gulf mouth tidal range is the largest, the bay top sea area has the smallest tidal range, the duration of the high tide is slightly longer than the falling tide, which is an irregular half-day tide, and the maximum velocity of each observation station is quite different. The highest value appears in the deep trough of the mouth of the bay, 134 cm / s, and the lowest value appears in the shallow sea area of the top of the bay, which is 31 cm / s. The horizontal distribution of the maximum velocity is basically decreasing from the mouth of the bay to the top of the bay. The simulation results show that, In Shuidong Bay, the tidal current flows back and forth along the tidal channel. The current flow direction is between 280 掳and 300 掳, and the current velocity varies in the range of 0.28 ~ 1.36 m / s, and the downtrend direction is between 128 掳and 180 掳, and the velocity varies in the range of 0.56 ~ 1.44 m / s, the flow vector is significantly restricted by topography.
【作者单位】：广东海洋大学数学与计算机学院;
【基金】：广东省高等教育“创新强校工程”资助项目(2015KQNCX051)
【分类号】：P731.2

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