| 李兰满,林伟波,张一乙,陈 鹏.洋口港潮滩沉积过程研究*[J].水运工程,2025,(1):23-28 |
| 洋口港潮滩沉积过程研究* |
| Sedimentary process of tidal flat in Yangkou Port |
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| DOI： |
| 中文关键词: 洋口港 潮滩沉积 悬沙输运 底部切应力 |
| 英文关键词:Yangkou Port tidal flat sediment process bed shear stress |
| 基金项目:江苏省海洋科技创新项目 (JSZRHYKJ202312，JSZRHYKJ202214) |
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| 中文摘要: |
| 为了研究江苏典型淤积潮滩泥沙沉积特征，于2021年7月在洋口港开展断面调查。研究结果表明，该区域潮流为正规半日潮，涨潮流向为西南向、落潮流向为东北向。观测期间，波高随风场的增强明显变大，潮流大小主要随着潮周期变化；增强的波浪有助于水体扰动和泥沙悬浮；底部切应力主要受潮流作用，受波浪作用较小；波流联合切应力大部分时间都小于临界侵蚀应力，水体中的悬沙多倾向于沉降，滩面易淤积；悬沙总体上沿岸向南和平行向岸输送。 |
| 英文摘要: |
| To study the sediment deposition characteristics of typical silted tidal flats in Jiangsu Province,a cross-section survey was carried out at Yangkou Port in July 2021.The results show that there is a normal semi-diurnal tide in the study region.The current is southwestward during the flood,and gradually become northeastward during the ebb.The wave is obviously forced by the strong wind,and the wave height is obviously enhanced,the current mainly changes with the tidal cycle.The strong waves in windy period contribute to the disturbance of the water column and conducive to the suspension of sediment.The bed shear stress is mainly contributed by the current.The combined shear stress of wave and current is weaker than the critical erosion stress in most of the time,resulting in the settling of suspended sediment.On the whole,the suspended sediment is transported southward along the coast and parallel to the shore. |
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