福建兴化湾附近海域水动力特征研究

发布时间：2018-01-02 21:02

本文关键词：福建兴化湾附近海域水动力特征研究　出处：《水电能源科学》2017年09期 　论文类型：期刊论文

【摘要】：基于兴化湾海域实测水文资料,采用相关潮汐潮流调和分析方法建立了附近海域二维水动力数学模型,研究了附近海域的潮汐潮流特性。结果表明,兴化湾海域潮汐属于规则半日潮,平均落潮流历时长于涨潮流历时;测区实测涨潮流流速大于落潮流流速,但落潮流历时长于涨潮流历时;工程海域潮流变化主要受协振波所控制,潮流性质属于不规则半日浅海潮流,潮流运动形式是以往复流为主并伴有旋转性质的混合流态;兴化湾湾内和口门附近以往复流为主,湾外呈旋转流特征;兴化湾内是受南日水道和兴化水道两股潮流作用,水流动力变化特征是兴化水道强于南日水道,其中湾内南侧海域主要受南日水道潮流控制,湾内北侧和深槽海域主要受兴化水道潮流作用。
[Abstract]:Based on the measured hydrological data of Xinghua Bay, a two-dimensional hydrodynamic mathematical model of the nearby sea area is established by using the method of correlation tidal current harmonic analysis. The characteristics of the tidal current in the nearby sea area are studied. The tide in Xinghua Bay belongs to the regular semi-diurnal tide and the average duration of the falling current is longer than that of the rising tide. The measured velocity of rising tide is larger than that of falling tide, but the duration of falling tide is longer than that of rising tide. The variation of tidal current in engineering sea area is mainly controlled by the synergetic wave. The nature of tidal current belongs to the irregular half-day shallow sea tidal current, and the tidal current movement form is a mixed flow with the characteristics of reciprocating current and rotation. The reciprocating flow is dominant in and around Xinghua Bay, and it is characterized by rotating flow outside the bay. The Xinghua Bay is affected by two tidal currents, namely the Nanri waterway and the Xinghua waterway. The characteristics of the water flow dynamic variation are that the Xinghua waterway is stronger than the Nanri waterway, and the south side of the bay is mainly controlled by the Nanri waterway tidal current. The north side of the bay and deep trough area are mainly affected by the Xinghua waterway tidal current.
【作者单位】：杨凌职业技术学院;西安工程大学;
【分类号】：P731.2
【正文快照】： 1概况兴化湾位于福建省沿海中部,北邻福清湾,南靠湄洲湾,属于福建省最大的海湾,地理位置和自然环境十分优越[1]。湾内主槽自福清市江阴半岛最南端的壁头至湾口,有南日岛北侧的兴化水道及南日岛西侧的南日水道,两条水道自然水深绝大部分均在-20m以上,水深条件良好[2]。近年来,

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