| 摘要: |
| 采用二维非线性运动方程和连续方程组，以多个分潮同步输入，做耦合数值模拟，进行潮汐数值预报。结果表明，K1潮波等振幅线分布与历史潮波图明显不同，此线呈舌状向北伸展，特别在湾的南部海域，其中央区振幅很小，10cm等振幅线可以伸至北纬19°以北。O1分潮的分布与K1分潮类似；北部湾北部以全日潮为主，湾的南部潮汐性质指标数2.0的等值线呈舌状向湾内神，两侧为不正规日潮，中间为不正规半日潮。4.0等值线向北推移，在19°N以南中央海区预报结果与前人的结果不同；南部海区中央一带潮差很小，最大可能潮差不超过2m，这种分布与前人结果有较大差异。 |
| 关键词: 潮汐数值预报 同潮时 潮汐性质 潮差 |
| DOI： |
| 分类号: |
| 基金项目:中国海洋石油总公司东方1-1油气田“九五”攻关项目 |
附件 |
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| NUIVIERICAL PREDICTION AND ANALYSIS OF THE TIDE IN BEIBU BAY |
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Liu Aiju, Zhang Yanhng
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First Institute of Oceanography, SOA, Qingdao 266003
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| Abstract: |
| A numerical simulation was made for tidal prediction by using the 2-D nonlinear motion equation and the continuity equation and simultaneous input of several tidal constituents. The equation system for the simulation are as follows: (For the equations please see the PDF file.) and the boundary condition at the open boundary is: (For the equations please see the PDF file.) The predicted results showed that the distribution of K1 amplitude isoline is different from that of historical tidal wave distribution. The tongue lines stretch northward, and the K1 amplitude in the central area of southern Beibu Bay is small, with the 10cm amplitude line stretching as far north as 19°N. The distribution of the O1 constituent is similar to that of the O1 constituent. The diurnal tide is predominant in the northern Beibu Bay, and the tongue isolines of tidal characteristics index 2.0 in the southern Beibu Bay stretch into the Bay with the irregular diurnal tide on its sides and the irregular semi-diurnal tide in the tongue isolines. The index 4.0 isolines stretch northward, and the prediction results in the central area south of 19°N are different from previous results; the tidal range in the central area of the southern Beibu Bay is small, with the maximum possible tidal range being no greater than 2m, which is quite different from previous results. |
| Key words: Tidal numerical prediction, Cotidal hour, Tidal characteristics, Tidal range |
