| 岬湾海岸中人工岛建设对岬角涡旋及海湾地形冲淤的影响——以海南岛铺前湾为例 |
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| 引用本文： | 陈亮鸿,林国尧,龚文平.岬湾海岸中人工岛建设对岬角涡旋及海湾地形冲淤的影响——以海南岛铺前湾为例[J].海洋学报,2019,41(1):41-50. |
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| 作者姓名： | 陈亮鸿 林国尧 龚文平 |
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| 作者单位： | 中山大学 海洋学院,广东 广州,510275;海南省海洋与渔业科学院,海南 海口,570125 |
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| 基金项目： | 国家自然科学基金项目（41576089）。 |
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| 摘 要： | 岬湾海岸中一般在岬角的右侧与左侧（面向大海方向）分别发育顺时针与逆时针涡流。这些涡流的存在对泥沙输运、海底地形演变、污染物扩散等都具有重要影响。而在海洋中岛屿的存在将产生局部的岛后尾流。如岛屿与岬角距离较近，岛后尾流可能与岬角涡旋相互作用，反之则相互影响较小。本文以海南岛铺前湾为例，研究在岬湾海岸中湾口处的人工岛建设对湾内涡旋的影响，并进一步分析人工岛建设对整个海湾海底冲淤变化的效应。本项研究主要采用COAWST模型进行研究。结果表明，大潮期在海湾内发育大范围的顺时针涡旋，小潮期涡旋发育不明显，以东向余流为主。人工岛建设并未影响整个海湾的涡旋结构，但人工岛分隔了湾内顺时针涡旋，且在周围产生局部的逆时针与顺时针涡旋。海底冲淤变化的基本格局为湾内以淤积为主，人工岛建设加强了这种趋势，但在人工岛与岸线之间的狭窄通道内，海底出现冲刷。本项研究对岬湾海岸的科学开发管理具有一定意义。
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| 关 键 词： | 岬湾海岸 涡旋 COAWST 模型系统 人工岛 海南岛 |
| 收稿时间： | 2017/10/16 0:00:00 |
| 修稿时间： | 2018/5/4 0:00:00 |
The impact of artificial island construction on the headland vortex and bed level change in headland-bay coastal systems-A case study in Puqian Bay, Hainan Island |
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| Chen Lianghong,Lin Guoyao and Gong Wenping.The impact of artificial island construction on the headland vortex and bed level change in headland-bay coastal systems-A case study in Puqian Bay, Hainan Island[J].Acta Oceanologica Sinica (in Chinese),2019,41(1):41-50. |
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| Authors: | Chen Lianghong Lin Guoyao and Gong Wenping |
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| Institution: | 1.School of Marine Science, Sun Yat-sen University, Guangzhou 510275, China2.Hainan Provincial Marine and Fishery Research Institute, Haikou 570125, China |
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| Abstract: | In general, a pair of clockwise and anti-clockwise vortexes will develop at the right and left sides of a headland (facing to the sea), respectively. These vortexes play important roles in sediment transport, sea bed change and pollutants'' dispersion. The islands in the ocean will also induce island wakes. When the islands are close to the headland, the island wakes may interact with the vortexes induced by the headlands. In this study, we take the Puqian Bay, Hainan Island, as an example to investigate the construction of an artificial island at the bay mouth on the vortexes in the coastal bay, and further examine its effect on the sea bed erosion and accretion. This study is mainly conducted through using the COAWST model. The model is carefully calibrated by the observation data of water elevation and current. The model results indicate that there develops a large-scale clockwise vortex in the bay during the spring tide, while this vortex disappears during the neap tide. The construction of the artificial island does not change the vortex pattern as a whole, however, locally there develop several clockwise and anti-clockwise vortexes around the island. The sea bed is in a state of weak accretion under the tidal action, while the artificial island strengthens this pattern in most of the bay, except in the waterway between the island and coastline. It is hoped that this study will benefit coastal development management. |
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| Keywords: | headland-bay coast vortex COAWST model artificial island Hainan Island |
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