| 北部湾潮汐潮流的三维数值模拟 |
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| 引用本文： | 孙洪亮,黄卫民.北部湾潮汐潮流的三维数值模拟[J].海洋学报,2001,23(2):1-8. |
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| 作者姓名： | 孙洪亮 黄卫民 |
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| 作者单位： | 国家海洋局第一海洋研究所, 山东青岛 266061 |
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| 基金项目： | 广西壮族自治区资助项目(9734). |
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| 摘 要： | 基于二阶湍流闭合模型计算涡动粘性系数的POM三维水动力模式,采用细网格,考虑6个岛屿、海底摩擦系数进行划片取值,模拟北部湾潮汐潮流.所得潮汐调和常数与81个实测站比较,绝对平均误差:K1分潮振幅为46cm,迟角为9°;O1分潮振幅为56cm,迟角为7°;M2分潮振幅为62cm,迟角为15°.由模拟结果分析出该海区潮汐、潮流、余水位和潮余流,以及水平速度垂直分布等特征.
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| 关 键 词： | 北部湾 潮汐潮流 POM |
| 文章编号： | 0253-4193(2001)02-0001-08 |
| 收稿时间： | 1999/12/26 0:00:00 |
| 修稿时间： | 1999年12月26 |
Three-dimensional numerical simulation for tide and tidal current in the Beibu Gulf |
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| SUN Hong-liang and HUANG Wei-min.Three-dimensional numerical simulation for tide and tidal current in the Beibu Gulf[J].Acta Oceanologica Sinica (in Chinese),2001,23(2):1-8. |
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| Authors: | SUN Hong-liang and HUANG Wei-min |
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| Institution: | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | By means of three-dimensional POM model,which computes the eddy viscosity coefficient based on two-order turbulent closed model,the tide and tidal current in the Beibu Gulf are simulated with fine grid.In the computed region,six of islands are considered and the bottom friction coefficients are taken to be various values from the difference of sea region.The results show that: (1) comparing the computed values with those of 81 tidal observatories,the absolute mean errors for three constituent amplitudes of O1,K1 and M2 are respectively 5.6,4.6 and 6.2 cm,and the lags are respectively 7°,9° and 15°; (2) the irregular diurnal tide and regular diurnal tide dominate in the Beibu Gulf.There are a no-tide point of K1 constituent at the east side of the Thuan An and a no-tide point of O1 constituent at the west side of the Thuan An.It remains to befurther demonstrated hereafter; (3) the residual water level is less in the Beibu Gulf and its distribution trend is basically consistent with that got by Cao Diming et al.,but there is the lowest residual water level of -3.5 cm in the Qiongzhou Straits.The westward tide-induced residual current exists in the Qiongzhou Straits and the northward tide-induced residual current exists near the westshore of the Hainan Island; (4) the vertical change of horizontal velocity is not large and the direction of maximum current velocity is slightly to the left from surface to bottom,while the occurring time of maximum current velocity is generally in advance in the bottom layer. |
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| Keywords: | Beibu Gulf tide and tidal current POM |
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