Local Erosion-Deposition Changes and Their Relationships with the Hydro-Sedimentary Environment in the Nearshore Radial Sand-Ridge Area off Dongtai, Northern Jiangsu
文献类型：期刊论文
| 作者 | Zhuang, Ning2,3; Yan, Liwen2,3,4; Liu, Yanxia3; Wang, Xiaohui1; Cao, Jingyuan2,3; Jiang, Jiyang4 |
| 刊名 | JOURNAL OF MARINE SCIENCE AND ENGINEERING
 |
| 出版日期 | 2026-01-20 |
| 卷号 | 14期号:2页码:20 |
| 关键词 | radial sand ridges erosion and deposition surface sediments hydrodynamic characteristics suspended sediment concentration grain size |
| DOI | 10.3390/jmse14020205 |
| 通讯作者 | Yan, Liwen(yanliwen@qdio.ac.cn) |
| 英文摘要 | The radial sand-ridge field off the Jiangsu coast is a distinctive landform in a strongly tide-dominated environment, where sediment supply and geomorphic patterns have been profoundly altered by Yellow River course changes, reduced Yangtze-derived sediment, and large-scale reclamation. Focusing on a typical nearshore sector off Dongtai, this study integrates multi-source data from 1979 to 2025, including historical nautical charts, high-precision engineering bathymetry, full-tide hydro-sediment observations, and surficial sediment samples, to quantify seabed erosion-deposition over 46 years and clarify linkages among tidal currents, suspended-sediment transport, and surface grain-size patterns. Surficial sediments from Maozhusha to Jiangjiasha channel systematically fine from north to south: sand-ridge crests are dominated by sandy silt, whereas tidal channels and transition zones are characterized by silty sand and clayey silt. From 1979 to 2025, Zhugensha and its outer flank underwent multi-meter accretion and a marked accretion belt formed between Gaoni and Tiaozini, while the Jiangjiasha channel and adjacent deep troughs experienced persistent scour (local mean rates up to similar to 0.25 m/a), forming a striped "ridge accretion-trough erosion" pattern. Residual and potential maximum currents in the main channels enhance scour and offshore export of fines, whereas relatively strong depth-averaged flow and near-bed shear on inner sand-ridge flanks favor frequent mobilization and short-range trapping of coarser particles. Suspended-sediment concentration and median grain size are generally positively correlated, with suspension coarsening in high-energy channels but dominated by fine grains on nearshore flats and in deep troughs. These findings refine understanding of muddy-coast geomorphology under strong tides and may inform offshore wind-farm foundation design, navigation-channel maintenance, and coastal-zone management. |
| WOS关键词 | EVOLUTION ; MECHANISM ; SYSTEM ; CHINA |
| 资助项目 | Shandong Provincial Key Research and Development Program (Public Welfare Science and Technology Research Category)[2019GSF111017] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001672186600001 |
| 出版者 | MDPI |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204688]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Yan, Liwen |
| 作者单位 | 1.Jiangsu Elect Power Design Inst Co Ltd, China Energy Engn Grp, Nanjing 211102, Peoples R China 2.Univ Chinese Acad Sci, Beijing 101408, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266400, Peoples R China 4.Shandong Univ Sci & Technol, Coll Geodesy & Geomat, Qingdao 266590, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhuang, Ning,Yan, Liwen,Liu, Yanxia,et al. Local Erosion-Deposition Changes and Their Relationships with the Hydro-Sedimentary Environment in the Nearshore Radial Sand-Ridge Area off Dongtai, Northern Jiangsu[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2026,14(2):20. |
| APA | Zhuang, Ning,Yan, Liwen,Liu, Yanxia,Wang, Xiaohui,Cao, Jingyuan,&Jiang, Jiyang.(2026).Local Erosion-Deposition Changes and Their Relationships with the Hydro-Sedimentary Environment in the Nearshore Radial Sand-Ridge Area off Dongtai, Northern Jiangsu.JOURNAL OF MARINE SCIENCE AND ENGINEERING,14(2),20. |
| MLA | Zhuang, Ning,et al."Local Erosion-Deposition Changes and Their Relationships with the Hydro-Sedimentary Environment in the Nearshore Radial Sand-Ridge Area off Dongtai, Northern Jiangsu".JOURNAL OF MARINE SCIENCE AND ENGINEERING 14.2(2026):20. |
入库方式： OAI收割
来源：海洋研究所
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