基于FVCOM的泉州湾海域三维潮汐与潮流数值模拟

林作梁; 朱学明; 鲍献文; 刘钦政

doi:10.3969/j.issn.0253-4193.2013.01.003

基于FVCOM的泉州湾海域三维潮汐与潮流数值模拟

doi: 10.3969/j.issn.0253-4193.2013.01.003

1.
泉州市环境监测站, 福建泉州 362000
2.
国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081
3.
中国海洋大学海洋环境学院, 山东青岛 266100
4.
国家海洋局海洋减灾中心, 北京 100194

基金项目: 国家海洋局青年海洋科学基金项目(2013230);国家科技支撑项目(2006BAC03B04);海洋可再生能源专项(GHME2010ZC08;GHME2010ZC11);国际科技合作项目(2009DFA20760)。

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出版历程
- 收稿日期: 2011-02-03
- 修回日期: 2012-05-18

Three-dimensional tide and tidal current numerical simulation based on FVCOM in Quanzhou Bay

1.
Quanzhou Environmental Monitoring Station, Fujian 362000, China
2.
Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing 100081, China
3.
Collage of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China
4.
National Marine Hazard Mitigation Service, Beijing 100081, China

摘要

摘要: 基于FVCOM海洋数值模式,采用非结构的三角形网格和有限体积法,建立了泉州湾海域高分辨率(26 m)的三维潮汐、潮流数值模型。模拟结果同2个验潮站和3个连续测流站的观测资料符合良好,较好地反映了泉州湾内潮汐、潮流运动的变化状况和分布特征,给出了M₂、S₂、K₁、O₁ 4个主要分潮的同潮图、表层潮流椭圆分布,以及模拟区域内最大可能潮差、表层最大可能潮流流速和潮余流分布。分析表明,4个分潮的最大潮汐振幅和迟角差分别为219 cm和19°,85 cm和25°,26 cm和12°,26 cm和9°;石湖港以东海域的潮波为逆时针旋转的驻波,以西海域为前进波;最大可能潮差由湾口的8.0m向湾内增加至8.8 m。湾内潮流类型为规则半日潮流,落潮最大流速大于涨潮最大流速,北乌礁水道为强流区,表层最大可能潮流流速为2.4 m/s;湾口潮流运动以逆时针方向的旋转流形式为主,湾内的潮流运动以往复流形式为主,长轴走向主要沿着水道方向,与等深线和海岸线平行;四个分潮流表层最大流速分别为1.4 m/s,0.58 m/s,0.12 m/s,0.10 m/s。余流流速大小与潮流强弱有密切的联系,表、中、底层最大余流流速分别为26 cm/s,20 cm/s,16 cm/s,三者在水平方向基本呈北进南出的分布形态。
- 泉州湾 /
- 潮汐 /
- 潮流 /
- FVCOM /
- 潮余流
Abstract: Based on a finite-volume coastal ocean model (FVCOM), adopting an unstructured triangle grid, a three-dimensional tide and tidal current numerical modeling with high resolution (26 m) is applied to Quanzhou Bay. The simulated results agree well with the observed data from two tide-gauges and three continuing current stations, and reproduce the distribution features of the tide and tidal currents in the Quanzhou Bay famously. The distributions of co-tidal charts and tidal ellipses on the surface layer for four major constituents (M₂,S₂,K₁,O₁) are obtained. What's more, the distributions of the maximum probable tidal range and tidal currents velocity and tidal residual currents on the surface and bottom layers are obtained, too. By analyzing, the maximum tidal amplitude and phase-lag range for the four constituents are 219 cm and 19°,85 cm and 25°,26 cm and 12°,26 cm and 9°, respectively. The tidal wave is anti-clockwise standing wave in the east area of Shihu Port, but it is advancing wave in the west area of Shihu Port. The maximum probable tidal range increases from 8.0 m at the mouth of the bay to 8.8 m inside of the bay. The type of tidal currents is regular semi-diurnal currents inside of the bay, and the maximum velocity of ebbing is larger than flooding. The velocity in the channel of Beiwujiao is stronger than any other area, and the maximum probable tidal-current velocity is 2.4 m/s on the surface layer. The flow is rotating with anti-clockwise mainly at the mouth of the bay, while rectilinear flow is mainly inside of the bay, such as estuaries and channels. And the directions of major axes are along with channels direction mainly, or paralleling with isobaths and coastlines. The maximum tidal current velocities for the four major constituents are 1.4 m/s,0.58 m/s,0.12 m/s,0.10 m/s on the surface layer, respectively. Tidal residual currents velocity is closely related to tidal currents, the maximum velocities on the surface layer, the middle layer and the bottom layer are 26 cm/s, 20 cm/s, 16 cm/s, respectively. All of them are coming into the bay from north and going out of the bay from south.
- Quanzhou Bay /
- tide /
- tidal current /
- FVCOM /
- tidal residual current

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