| 拉格朗日拟序结构分析渤海湾岸线变化对物质输运的影响 |
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| 引用本文： | 冯依蕾,张燕伟,于金珍,张学庆.拉格朗日拟序结构分析渤海湾岸线变化对物质输运的影响[J].海洋通报,2020,39(6):669-677. |
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| 作者姓名： | 冯依蕾 张燕伟 于金珍 张学庆 |
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| 作者单位： | 中国海洋大学环境科学与工程学院 山东青岛266000;中国海洋大学海洋环境与生态教育部重点实验室 山东青岛266000;中国海洋大学环境科学与工程学院 山东青岛266000;中国海洋大学海洋环境与生态教育部重点实验室 山东青岛266000;中国海洋大学环境科学与工程学院 山东青岛266000;中国海洋大学海洋环境与生态教育部重点实验室 山东青岛266000;中国海洋大学环境科学与工程学院 山东青岛266000;中国海洋大学海洋环境与生态教育部重点实验室 山东青岛266000 |
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| 基金项目： | 国家重点研发计划 （2018YFC1407601） |
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| 摘 要： | 科学评估围填海对海洋中物质输运的影响，对海洋环境保护和管理具有重要的意义。本文采用非结构网格有限体积海洋模型 （FVCOM） 模拟渤海湾 2004 年和 2018 年岸线变化前后水动力场，通过拉格朗日拟序结构的方法，评估岸线变化
对物质输运的影响。结果表明：岸线变化后，物质自近岸向湾内的扩散加强，且物质的输运通道和聚集区发生改变。曹妃甸附近原有清晰输运和聚集区域消失，物质向湾内输运；黄骅港阻碍了西部水体沿岸的南下路径，并在防沙堤顶部形成新的聚集区；渤海湾东南区域的物质输运通道向东延伸，输运能力加强，且聚集面积减小。
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| 关 键 词： | 拉格朗日拟序结构 物质输运 围填海 渤海湾 |
| 收稿时间： | 2020/1/15 0:00:00 |
| 修稿时间： | 2020/3/29 0:00:00 |
Lagrangian coherent structures analysis of the influence of shoreline change on material transport in Bohai Bay |
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| FENG Yilei,ZHANG Yanwei,YU Jinzhen,ZHANG Xueqing.Lagrangian coherent structures analysis of the influence of shoreline change on material transport in Bohai Bay[J].Marine Science Bulletin,2020,39(6):669-677. |
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| Authors: | FENG Yilei ZHANG Yanwei YU Jinzhen ZHANG Xueqing |
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| Institution: | College of Environmental Science and Engineering, Ocean University of China, Qingdao 266000, China;Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Qingdao 266000, China |
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| Abstract: | The impact assessment of reclamation on material transport scientifically is of great significance for marine environmental protection and management. FVCOM was used to simulate the hydrodynamic field of Bohai Sea in 2004 and 2018 during which time the local shoreline changed dramatically. The method of Lagrangian coherent structures was introduced to analyze material transport. The results show that the process of material dispersion from the nearshore to the bay was strengthened, and the transport channels and accumulation regions in Bohai Bay were changed after reclamation. The trans
portation and accumulation area near Caofeidian were clear in 2004 but disappeared in 2018, and materials were transported into the bay instead of along the shore. Huanghua Port blocked the southward path of the western water body, and formed a new accumulation area at the top of the sediment-protecting dyke. The southeast of Bohai Bay was affected as well. The material transportation channel extended with the transportation capacity strengthened, meanwhile, the accumulation area decreased. |
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| Keywords: | Lagrangian coherent structures material transport reclamation Bohai Bay |
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