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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。
Based on the measured hydrological data in Xinghua Bay sea area, a two-dimensional hydrodynamic mathematical model of the adjacent sea area was established by using the tide-tidal current harmonic analysis method, and the tides and tidal characteristics of the nearby sea area were studied. The results show that the tide in the Xinghua Bay waters belongs to the regular half-day tide, and the mean ebb tide lasted longer than that of the tide tide. The measured tidal current actually measured tidal current was greater than that of the tidal current, but the tide lasted longer than that of the tide tidal current. Waves dominated the tidal current which belongs to the irregular half-day shallow tidal current. The tidal current motion pattern is a mixed flow pattern mainly of reciprocating flow and rotating property. In the past, Xinghua Bay is influenced by two tidal currents of Nanri Water Channel and Xinghua Water Channel. The change of hydrodynamic characteristics is that Xinghua Channel is stronger than that of Nanri Channel, in which the south of the bay is dominated by the tidal current of Nanri Channel and the north side of the bay And deep trough waters are mainly affected by the trend of Xinghua waterway.