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Downdrift Port Siltation Adjacent to a River Mouth: Effects of Mesotidal Conditions and Typhoon
| 题名： | Downdrift Port Siltation Adjacent to a River Mouth: Effects of Mesotidal Conditions and Typhoon |
| 正文语种： | eng |
| 作者： | Andhy Romdani;Jia-Lin Chen;Hwa Chien;Jing-Hua Lin;Ching-Yuan Liao;Cheng-Chien Hou |
| 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;Institute of Hydrological and Oceanic Sciences National Central Univ. Jhongli City 320 Taiwan;Dept. of Hydraulic and Ocean Engineering National Cheng Kung Univ. Tainan City 701 Taiwan |
| 关键词： | Typhoon; Sediment plume; Plume dispersal; Harbor siltation; Meso-tidal conditions |
| 摘要： | The Zhuoshui River has one of the highest sediment yields in the world. The riverine sediment may have been transported away from the river mouth by strong tidal currents and deposited in a navigational channel and a harbor basin south of the Zhuoshui River. This study describes the dispersal of riverine sediments in mesotidal conditions, including transport processes of sediments via river plumes, initial deposition, resuspension, and long-term net accumulation. Our results revealed that the distribution of suspended sediment concentration (SSC) and the transport process of the river plume was markedly modulated by tidal currents in a north-south direction. Under high-discharge conditions, energetic winds and ocean currents interrupted the offshore propagation of the sediment-laden river plume with a high SSC to the ocean. The plume, induced by typhoon floods, was either propagated northward due to the Coriolis effect or was deposited near the river mouth. The sediments deposited within the inner shelf were resuspended by intensive tidal currents and transported through southward residual circulations to the navigation channel south of the river mouth. |
| 出版年： | 2023 |
| 期刊名称： | Journal of Waterway, Port, Coastal and Ocean Engineering |
| 卷： | 149 |
| 期： | 2 |
| 页码： | 05022007.1-05022007.11 |
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