| 吕宋海峡M2内潮的三维数值模拟 |
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| 引用本文： | 李秉天,曹安州,吕咸青.吕宋海峡M2内潮的三维数值模拟[J].海洋学报(英文版),2015,34(11):55-62. |
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| 作者姓名： | 李秉天 曹安州 吕咸青 |
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| 作者单位： | 中国海洋大学, 物理海洋教育部重点实验室, 青岛, 266003,中国海洋大学, 物理海洋教育部重点实验室, 青岛, 266003,中国海洋大学, 物理海洋教育部重点实验室, 青岛, 266003 |
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| 基金项目： | The National High Technology Research and Development Program (863 Program) of China under contract Nos 2013AA122803 and 2013AA09A502; the National Natural Science Foundation of China under contract Nos 41206001 and 41371496; the National Science and Technology Support Program under contract No. 2013BAK05B04. |
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| 摘 要： | A three-dimensional isopycnic-coordinate internal tidal model is employed to investigate the generation,propagation, vertical structure and energy conversion of M2 internal tides in the Luzon Strait(LS) with mooring observations. Simulated results, especially the tidal current amplitudes, agree well with observations,demonstrating the reasonability and accuracy of the model. Results indicate that M2 internal tides mainly propagate into three directions horizontally, i.e., eastward towards the western Pacific Ocean, westward towards the Dongsha Island and southwestward towards the South China Sea Basin. In the horizontal direction, tidal current amplitudes decrease as distance increases away from the LS; in the vertical direction, they show an obvious decreasing tendency with depth. Between the double ridges of the LS, a clockwise gyre of M2 baroclinic energy flux appears, which is caused by reflections of M2 internal tides at supercritical topographies, and resonance of M2 internal tides happens along 19.5° and 21.5°N due to the heights and separation distance of the double ridges. The total energy conversion in the LS is about 14.20 GW.
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| 关 键 词： | 内潮 数值模拟 吕宋海峡 |
| 收稿时间： | 2015/3/19 0:00:00 |
| 修稿时间： | 2015/5/28 0:00:00 |
Three-dimensional numerical simulation of M2 internal tides in the Luzon Strait |
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| LI Bingtian,CAO Anzhou and LV Xianqing.Three-dimensional numerical simulation of M2 internal tides in the Luzon Strait[J].Acta Oceanologica Sinica,2015,34(11):55-62. |
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| Authors: | LI Bingtian CAO Anzhou and LV Xianqing |
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| Institution: | Key Laboratory of Physical Oceanography, Ocean University of China, Ministry of Education, Qingdao 266100, China |
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| Abstract: | A three-dimensional isopycnic-coordinate internal tidal model is employed to investigate the generation, propagation, vertical structure and energy conversion of M2 internal tides in the Luzon Strait (LS) with mooring observations. Simulated results, especially the tidal current amplitudes, agree well with observations, demonstrating the reasonability and accuracy of the model. Results indicate that M2 internal tides mainly propagate into three directions horizontally, i.e., eastward towards the western Pacific Ocean, westward towards the Dongsha Island and southwestward towards the South China Sea Basin. In the horizontal direction, tidal current amplitudes decrease as distance increases away from the LS; in the vertical direction, they show an obvious decreasing tendency with depth. Between the double ridges of the LS, a clockwise gyre of M2 baroclinic energy flux appears, which is caused by reflections of M2 internal tides at supercritical topographies, and resonance of M2 internal tides happens along 19.5° and 21.5°N due to the heights and separation distance of the double ridges. The total energy conversion in the LS is about 14.20 GW. |
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| Keywords: | internal tide numerical simulation Luzon Strait |
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