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基于美国普林斯顿大学的POM(Princeton Ocean Model)模型,将干湿网格技术引入到模型中,利用模型的外模式(二维)对深圳湾海域的潮汐、潮流和余流进行了数值模拟研究。模拟结果与实测值吻合较好。计算结果表明:深圳湾海域属不正规半日潮,水平潮流具有明显的往复流性质,主要呈西南—东北走向;落潮流速略大于涨潮流速;受地形及陆地河流径流的影响,湾中到湾口及航道附近流速较大,湾顶和靠近香港的滩涂部分流速较小;深圳湾余流场较弱,余流流向指向湾外;整个深圳湾水交换较弱,海域自净能力较差。
Based on the Princeton Ocean Model (POM) model of Princeton University in the United States, wet-dry grid technology was introduced into the model. The tidal, tidal current and residual flow in the Shenzhen Bay were numerically simulated by using the model’s two-dimensional model. The simulation results are in good agreement with the measured values. The calculated results show that the waters of Shenzhen Bay are irregular semi-diurnal tidal currents, and the horizontal tidal currents have obvious reciprocating flow characteristics, mainly in the southwest-northeast direction. The falling tide flow rate is slightly larger than the tidal flow velocity. Affected by topography and land runoff, The flow velocity near the waterway is relatively large. The velocity at the top of the tidal flat and the part near the tidal flats of Hong Kong is relatively small. The Shenzhen Bay Io flow field is weak and the residual flow is directed to the outlying bay. The Shenzhen Bay water exchange is weak and the marine self-purification capability is poor.