南黄海辐射沙洲趋势性演变的动力机制分析

陈可锋; 陆培东; 王艳红; 喻国华

南黄海辐射沙洲趋势性演变的动力机制分析

1.
河海大学水文水资源与水利工程科学国家重点实验室, 江苏, 南京, 210098;
2.
南京水利科学研究院, 江苏, 南京, 210029

基金项目: 国家自然科学基金资助项目(40706034);南京水利科学研究院青年基金(Y209004)

详细信息

作者简介:
陈可锋(1981- ),男,江西鄱阳人,工程师,博士后,主要从事河流海岸动力学及环境演变研究.E-mail:chenkefengnju@163.com

中图分类号: TV148.5
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- 文章访问数: 143
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出版历程
- 收稿日期: 2009-03-10
- 刊出日期: 2010-03-24

Hydrodynamic mechanism of evolvement trends in radial sandbank of South Yellow Sea, China

1.
State Key Laboratory of Hydrology-Water Resources and Hydranuic Engineering, Hohai University, Nanjing 210098, China;
2.
Nanjing Hydraulic Research Institute, Nanjing 210029, China

Funds: The study is financially supported by the National Natural Science Foundation of China (No.40706034)

摘要

摘要: 南黄海辐射沙洲区水道及其之间的沙洲普遍存在逐渐向南偏移的趋势,对这种趋势性演变机理及驱动力的认识成为辐射沙洲区海岸开发过程中亟待解决的问题。在恢复黄河北归以来苏北黄河三角洲海岸不同发育阶段的岸线位置和水下地形的基础之上,通过所建立的潮波数学模型,研究了在苏北黄河三角洲不同演变阶段南黄海潮波系统的特征及其变化。研究表明,随着岸线后退和水下三角洲的夷平,辐射沙洲地区潮差不断增大;水动力不断加强,而且加强的区域逐渐向南偏移,这种大范围区域性水动力主轴的向南偏移有可能是导致辐射沙洲整体南移的主导因素之一。
- 辐射沙洲 /
- 废黄河三角洲 /
- 岸线变迁 /
- 数值模拟 /
- 江苏海岸
Abstract: The recent studies show that the water channels and sandbanks in radial sandbank of South Yellow Sea (SYS) have been gradually migrating southward.Hydrodynamic analysis on the mechanism of such evolvement trends is thus crucial for the regional development in the coastal zones of Northern Jiangsu province.In this study,the staged evolution of coastlines and seabed topographies since the northern retrieval of the Yellow River estuary is first studied,and a numerical tidal wave model is then established to investigate the hydrodynamic characteristics of the tidal wave system in SYS and evolutions of the Yellow River delta in the different stages.The results show that because of the coastal zone erosions and vanishing of the delta formed by the abandoned Yellow River estuary in Northern Jiangsu province,both tidal elevation and hydrodynamic condition in radial sandbank of SYS have been strengthened,and the strengthened regions are found to be gradually migrating southward.The large-scale southward regional reinforcement of dynamic axis of flow is likely to be one of the major contributing factors causing the entire sandbar regions of SYS migrating southward.
- radial sandbank /
- abandoned Yellow River delta /
- coastline change /
- numerical model /
- coastal zones of Jiangsu province

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参考文献(18)

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南黄海辐射沙洲趋势性演变的动力机制分析

作者简介: 陈可锋(1981- ),男,江西鄱阳人,工程师,博士后,主要从事河流海岸动力学及环境演变研究.E-mail:chenkefengnju@163.com

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出版历程

Hydrodynamic mechanism of evolvement trends in radial sandbank of South Yellow Sea, China

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出版历程

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作者简介:
陈可锋(1981- ),男,江西鄱阳人,工程师,博士后,主要从事河流海岸动力学及环境演变研究.E-mail:chenkefengnju@163.com