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Downdrift Port Siltation Adjacent to a River Mouth: Mechanisms and Effects of Littoral Sediment Transport to the Navigation Channel
| 题名： | Downdrift Port Siltation Adjacent to a River Mouth: Mechanisms and Effects of Littoral Sediment Transport to the Navigation Channel |
| 正文语种： | eng |
| 作者： | Andhy Romdani;Jia-Lin Chen;Hwa Chien;Jing-Hua Lin;Chuan-Kai Hung;Yu-Qi Huang |
| 作者单位： | Dept. of Hydraulic and Ocean Engineering National Cheng Kung Univ. Tainan City 701 Taiwan Dept. of Civil Engineering Siliwangi Univ. Tasikmalaya City 46115 Indonesia;Dept. of Hydraulic and Ocean Engineering National Cheng Kung Univ. Tainan City 701 Taiwan;Institute of Hydrological and Oceanic Sciences National Central Univ. Jhongli City 320 Taiwan;Tainan Hydraulics Laboratory National Cheng Kung Univ. Tainan City 70955 Taiwan;Dept. of Hydraulic and Ocean Engineering National Cheng Kung Univ. Tainan City 701 Taiwan;Dept. of Hydraulic and Ocean Engineering National Cheng Kung Univ. Tainan City 701 Taiwan |
| 关键词： | Siltation in waterways; Sediment transport; Navigation improvements; Sedimentation |
| 摘要： | The mechanisms controlling sediment transport at river mouths and estuaries nearby ports are complicated interactions among waves, tidal currents, and river flows over complex bathymetry. Episodic river discharge triggered by large rainfall may contribute to significant sediment into the ocean. Over the last decade, the exposed riverine sediment from the Zhuoshui River, north of Mailiao Port, is one of the major sources of sediment supply in this region. Previous field observations shortly after the passage of a typhoon suggested fine-grained sediments settled rapidly near the river mouth, and tidal currents and strong wind-driven waves during winter were the mechanisms that transported sediment toward the navigational channel. Numerical simulations provide insights into the patterns of residual circulations for a range of spring-neap tidal forces and wave conditions. Model results show that extending North Jetty could be one of the engineering countermeasures to modify the circulation system between the port and the river mouth to mitigate the siltation problem. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Waterway, Port, Coastal and Ocean Engineering |
| 卷： | 148 |
| 期： | 2 |
| 页码： | 05022001.1-05022001.13 |
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