| 河口湾水动力环境对滩涂利用的累积响应——以珠江口伶仃洋为例 |
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| 引用本文： | 侯庆志,陆永军,王志力,莫思平.河口湾水动力环境对滩涂利用的累积响应——以珠江口伶仃洋为例[J].水科学进展,2019,30(6):789-799. |
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| 作者姓名： | 侯庆志 陆永军 王志力 莫思平 |
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| 作者单位： | 南京水利科学研究院水文水资源与水利工程科学国家重点实验室, 江苏南京 210029 |
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| 基金项目： | 国家重点研发计划资助项目（2018YFC0407504）；国家自然科学基金资助项目（51520105014） |
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| 摘 要： | 为揭示河口湾水动力环境对滩涂利用的累积响应过程，以珠江口伶仃洋河口湾为例，基于潮波数学模型和潮流数学模型，研究了1981年以来湾内进出潮量、分潮振幅和潮流流速的累积变化。结果表明:相对于1981年，2018年岸线条件下伶仃洋湾口断面涨落潮量累积减少4.9%~6.0%、内伶仃断面涨落潮量累积减少9.0%~12.8%、深圳湾断面涨落潮量累积减少17.8%、南沙断面涨落潮量累积减少5.0%~6.3%；伶仃洋M2分潮振幅呈增加趋势，振幅增幅由南向北增加，潮波由南向北变形进一步加剧；伶仃洋最大可能潮差变化与M2分潮振幅变化趋势一致，潮汐性质没有发生变化；伶仃洋潮流流速总体减小，西岸流速减幅高于东岸，湾顶附近流速略有增加。
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| 关 键 词： | 珠江口 伶仃洋 滩涂利用 水动力环境 潮波 数学模型 |
| 收稿时间： | 2019-02-01 |
Cumulative response of estuarine bay hydrodynamic environment to human activities: example of Lingding Bay of the Pearl River Estuary |
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| HOU Qingzhi,LU Yongjun,WANG Zhili,MO Siping.Cumulative response of estuarine bay hydrodynamic environment to human activities: example of Lingding Bay of the Pearl River Estuary[J].Advances in Water Science,2019,30(6):789-799. |
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| Authors: | HOU Qingzhi LU Yongjun WANG Zhili MO Siping |
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| Affiliation: | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China |
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| Abstract: | Abundant tidal flat resources exist along the coast zone of the Lingding Bay of the Pearl River Estuary,reclamation of which can ease the contradiction between land resource shortage and demand for social and economic development. The shoreline at the Lingding Bay changed significantly since 1981 due to reclamation of tidal flats. However,there is still a lack of understanding on the cumulative response process of estuarine hydrodynamic environment to reclamation of tidal flats. In this study,eight cases were selected as representative reclamation stages in the Lingding Bay since 1981,a two-dimensional tidal wave mathematical and tidal current mathematical model were developed to analyze the cumulative changing process of tidal volume,constituent tidal amplitude,as well as tidal current velocity. The results show that tidal volume decrease for bay mouth section,Neilingding section,Shenzhen Bay section,as well as Nansha section compared to their conditions in 1981 are about 4.9%-6.0%,9.0%-12.8%,17.8%,and 5%-6.3%,respectively. The M2 constituent tide amplitude in the Lingding Bay in 2018 increases from south to north,and from west to east,which means tidal wave intensifies from south to north in the bay,compared to its condition in 1981. Tidal range change tendency in the Lingding Bay consistent with that of M2 constituent tidal amplitude,while the tidal characteristics in the bay does not changed,the tidal current velocity of the bay decrease generally,with more decrease on the west bank of the bay more than that on the east bank,while the current velocity near the bay top increases slightly,after the aforementioned reclamation stages were performed. The results of this study can inform the protection and utilization of tidal flat resources,protection of coastal engineering,coastal disaster prevention and mitigation on the Lingding Bay of the Pearl River Estuary and similar estuarine bays,as well provide a scientific basis for comprehensive tidal flat utilization and protection. |
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| Keywords: | Pearl River Estuary Lingding Bay tidal flat utilization hydrodynamic environment tidal wave numerical simulation |
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