| 长江口冲积岛岸滩剖面形态和冲淤规律 |
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| 引用本文： | 杨世伦,姚炎明,贺松林.长江口冲积岛岸滩剖面形态和冲淤规律[J].海洋与湖沼,1999,30(6):764-769. |
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| 作者姓名： | 杨世伦 姚炎明 贺松林 |
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| 作者单位： | [1]华东师范大学河口海岸动力沉积和动力地貌国家重点实验室 [2]华东师范大学河口海岸动力沉积和动力地貌国家重点实 |
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| 基金项目： | 教育部重点科学技术基金!98041，国家杰出青年科学基金!49825161 |
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| 摘 要： | 根据海岸带和海岛两次调查的实测资料和水下地形图，用动力地貌学方法对长江口三岛岸滩剖面的形态和冲淤变化进行研究。结果表明，分汊河口冲积岛岸滩有“江岸型”、“洲头型”和“潮滩型”三种基本类型；河槽变迁导致“岸滩发生数年周期的变化，岸滩的季节性变化受风、海面、潮差和含沙量等多种因子影响，台风和寒潮则引周期更短的“风暴旋回”，受植被保护的沼泽滩面的冲淤过程与光滩截然不同。
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| 关 键 词： | 冲积岛 岸滩冲面 冲淤变化 长江口 冲淤规律 |
| 收稿时间： | 1998/6/15 0:00:00 |
| 修稿时间： | 1999/7/10 0:00:00 |
COASTAL PROFILE SHAPE AND EROSION-ACCRETION CHANGES OF THE SEDIMENT ISLANDS IN THE CHANGJIANG RIVER ESTUARY |
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| YANG Shi-lun,YAO Yan-ming and HE Song-lin.COASTAL PROFILE SHAPE AND EROSION-ACCRETION CHANGES OF THE SEDIMENT ISLANDS IN THE CHANGJIANG RIVER ESTUARY[J].Oceanologia Et Limnologia Sinica,1999,30(6):764-769. |
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| Authors: | YANG Shi-lun YAO Yan-ming and HE Song-lin |
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| Institution: | State Key Lab of
Estuarine & Coastal Research, East China Normal University, Shanghai.
200062;State Key Lab of
Estuarine & Coastal Research, East China Normal University, Shanghai.
200062;State Key Lab of
Estuarine & Coastal Research, East China Normal University, Shanghai.
200062 |
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| Abstract: | Based on observed and collected data of morphology, sediment hydrodyntrics, and wind, thes paper mainly deals with the shape, classification and erosionaccrehon cycles of coastal Profiles of the sediment islands in the Chaniang River esmp. Undr siledomnated and currentdominated condihons, the coastal morphology and morphodynamics in thes area are different from those on sandy beaches. Coastal profiles of the island are classified as three types: "channl bank", "hdal beach" and "shoal head". bee basic erosionaccrehon cycles are proposed and discussed: (a) "interannual cycle", controlled by changes in river chann1; (b) "seasonal cycle",influenced by seasonal variations in wind, sealevel and hdal range; and (c) "storm cycle" caused by typhoons or cold waves. Because of the Protechon of vegetation, morphodndcs in marshes is apparenily dishnct compared with that on bare flats. |
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| Keywords: | Sediment island Coastal profile Erosion-accretion cycle Changjiang River estuary |
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