| 人类活动和自然演变共同驱动下黄河三角洲海域潮波及物质输运变化 |
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| 引用本文： | 缪红兵,乔璐璐,仲毅,李广雪.人类活动和自然演变共同驱动下黄河三角洲海域潮波及物质输运变化[J].海洋学报,2022,44(9):73-86. |
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| 作者姓名： | 缪红兵 乔璐璐 仲毅 李广雪 |
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| 作者单位： | 1.中国海洋大学 海洋地球科学学院，山东 青岛 266100 |
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| 基金项目： | 国家重点研发计划政府间国际科技创新合作重点专项（2017YFE0133500） |
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| 摘 要： | 在海堤建设等人类活动和三角洲蚀淤等自然演变的共同作用下，黄河三角洲岸线水深近年来发生了剧烈变化，同时也将引起邻近海域潮波系统及物质输运路径的重要变化。本文基于FVCOM数值模式，建立了黄河三角洲及邻近海域三维高分辨率潮汐、潮流及拉格朗日粒子追踪数值模型。通过与环渤海长期验潮站的潮汐调和常数、黄河三角洲临时潮位站和测流站的实测资料对比，模型结果验证良好，能较好反映黄河三角洲及邻近海域潮汐、潮流运动特征，并获得了2019年M2分潮无潮点位置。通过设置1980年、2019年黄河三角洲岸线自然演变、海堤建设及相应水深地形变化的5个数值实验，结果表明:在人类活动与自然演变共同驱动下，黄河三角洲海域的M2分潮无潮点向东南方向移动，主要影响因素为水深。黄河口向海延伸和海堤丁坝建设导致的岸线变化，对无潮点位置影响较小，但在该凸出岸段两侧形成余流流涡，使得黄河入海物质在莱州湾内停留时间变长，向渤海输运扩散的时间推迟。
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| 关 键 词： | 黄河三角洲 无潮点演变 FVCOM 物质输运 |
| 收稿时间： | 2021-08-22 |
Evolution of tidal system and material transport off the Huanghe River Delta induced by human activities and natural evolution |
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| Institution: | 1.College of Marine Geosciences, Ocean University of China, Qingdao 266100, China2.The Key Lab of Sea Floor Resource and Exploration Technique, Ministry of Education, Qingdao 266100, China3.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266001, China |
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| Abstract: | In recent years, the topography of Huanghe River Delta exhibits significant changes due to natural and man-made reasons, such as delta acceleration and dyke construction. At the same time, these factors also lead to important variations in the tidal wave system and material transport path in the adjacent sea area. In this study, we establish a three-dimensional high-resolution tide, current and Lagrangian particle tracking numerical model of the Huanghe River Delta and its adjacent sea area based on FVCOM. Our modeling results agree well with the tidal harmonic constant of the tide gauge stations in Bohai Sea region and the observation data of tide level stations and current stations in the Huanghe River Delta. Thus, this model can reflect the characteristics of tide and tidal current in the Huanghe River Delta and its adjacent sea area. Furthermore, the location of the 2019 amphidromic point of M2 is also obtained from this model. By designing five numerical experiments of natural coastline evolution, dyke construction and corresponding water depth changes in the Huanghe River Delta in 1980 and 2019, the following conclusions are drawn. Firstly, from 1980 to 2019, the amphidromic point of M2 moves southeast, with the major factor of water depth. Secondly, changes of coastal line caused by the extension of the Huanghe River Estuary and the construction of dykes have minor effects to the location of amphidromic point of M2. Nevertheless, these changes can form the residual current gyres on both sides of the convex bank. As a result, the material from the Huanghe River stays longer in Laizhou Bay and delays its transportation and diffusion to Bohai Sea. |
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