吕宋海峡夏季内潮数值模拟

发布时间：2018-12-06 14:46

【摘要】：利用三维海洋环流模式MITgcm,对吕宋海峡夏季内潮的生成与传播进行了分析。结果表明,在八分潮驱动的情况下,吕宋海峡夏季生成的内潮能量有4.7GW传入西太平洋,7.7GW传入南海,其中M2分潮最强,K1分潮次之。半日分潮主要在恒春海脊中部和巴坦群岛附近生成,并在传播过程中衰减迅速;全日分潮主要在巴布延群岛西北处及兰屿海脊北部生成,在传播过程中衰减较慢。西传M2和K1内潮主要在兰屿海脊南部生成,且西传M2内潮在恒春海脊北部得到增强,在恒春海脊中部则被削弱。在恒春海脊北部生成的东传M2和K1内潮在经过兰屿海脊时被削弱。恒春海脊使得部分源于兰屿海脊的西北向全日内潮转向西南,形成向南海海盆的内潮分支。
[Abstract]:The generation and propagation of the inner tide in the Luzon Strait in summer are analyzed by using the three-dimensional ocean circulation model (MITgcm,). The results show that the internal tide energy generated in the Luzon Strait in summer is 4.7GW spreading to the western Pacific and 7.7GW to the South China Sea. The M2 component is the strongest, and K1 is the second. The semidiurnal tide is mainly formed in the middle of Hengchun Ridge and near Batan Islands and attenuates rapidly during the propagation process, and the whole day tide is mainly formed in northwestern Papua Islands and the northern part of Lanyu Ridge, and the attenuation is slow during the propagation process. The internal tide of M2 and K1 mainly formed in the southern part of Lanyu Ridge, and the internal tide of M2 was strengthened in the north of Hengchun Ridge and weakened in the middle of Hengchun Ridge. The east-propagating M2 and K1 internal tides formed in the northern part of the Hengchun Ridge are weakened when they pass through the Lanyu Ridge. The Hengchun Ridge causes the northwestern tide from the Lanyu Ridge to turn southwest to the southwest, forming the branch of the inner tide toward the South China Sea basin.
【作者单位】：中国海洋大学海洋与大气学院;中国人民解放军91860部队;
【基金】：国家自然科学基金项目“南海内波的生成、传播及其三维性”(41276008) 山东省超级计算科技专项项目“全球大洋中尺度涡旋预报和南中国海内孤立波预报系统研发” 泰山学者工程专项经费资助~~
【分类号】：P731.23

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