| 杭州湾北岸金山咀—龙泉港岸段近岸滩槽冲淤演变分析 |
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| 引用本文： | 冯凌旋,季永兴,章馨谣,戴志军.杭州湾北岸金山咀—龙泉港岸段近岸滩槽冲淤演变分析[J].海洋学研究,2020,38(3):92-98. |
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| 作者姓名： | 冯凌旋 季永兴 章馨谣 戴志军 |
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| 作者单位： | 1.上海市水利工程设计研究院有限公司,上海 200061;2.华东师范大学 河口海岸科学研究院,上海 200062 |
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| 基金项目： | 国家重点研发项目政府间合作专项(2018YFE0109900);上海市科学技术委员会科研项目(18DZ1206400,19DZ1201500);上海市海洋局科研计划项目(沪海科2019-03) |
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| 摘 要： | 以杭州湾北岸金山咀—龙泉港岸段边滩及海床为研究区域,利用1989—2014年实测及海图资料分析岸滩断面地形变化和岸段冲淤变化。结果表明:在该研究时段,岸段存在长期稳定的冲刷深槽;近岸海床的冲淤表现出“波动性”,5 m等深线(2014年)以浅区以淤积为主,5 m等深线以深冲淤更迭,1989年以来总体呈现冲刷态势。长江入海泥沙量变化为该岸段发生侵蚀/淤积的影响因子之一,台风大浪及海床侵蚀/淤积波的移动导致海床冲淤复杂化。
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| 关 键 词： | 岸滩冲淤 滩槽演变 杭州湾北岸 |
| 收稿时间： | 2020-04-14 |
Analysis of erosion and deposition evolution of inshore shoals and channels along the Jinshanzui to Longquangang segment in the northern Hangzhou Bay |
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| FENG Lingxuan,JI Yongxing,ZHANG Xinyao,DAI Zhijun.Analysis of erosion and deposition evolution of inshore shoals and channels along the Jinshanzui to Longquangang segment in the northern Hangzhou Bay[J].Journal of Marine Sciences,2020,38(3):92-98. |
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| Authors: | FENG Lingxuan JI Yongxing ZHANG Xinyao DAI Zhijun |
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| Affiliation: | 1. Shanghai Water Engineering Design & Research Institute CO., LTD, Shanghai 200061, China;2. State Key Lab of Estuarine & Coastal Research, East China Normal University, Shanghai 200062, China |
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| Abstract: | Taking Jinshanzui-Longquangang marginal shoal in the northern Hangzhou Bay as the study area, based on the measured and chart data from 1989 to 2014, we analyzed the topographic change of beach section and the variation characteristics of erosion and deposition of regional beach section along the Jinshanzui to Longquangang(JSZ-LQG) segment. The results showed that during study period there was relative stable eroded deepen channel in the study area, and the scouring and silting of the nearshore seabed showed a "fluctuating" law. The shallow area above 5 m water depth(2014) presented accreted patterns, meanwhile, seabed below 5 m water depth(2014) showed a general scouring trend since 1989. Moreover, variation of sediment discharge into the Yangtze River is an influencing factor of erosion/deposition in the study area. The typhoon waves, movement of the erosion and accretion sand body induced complexity in erosion and accretion in seabed of the JSZ-LQG segment. |
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| Keywords: | seashores erosion and deposition shoal-channel evolution north bank of Hangzhou Bay |
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