| 企望湾砂质海滩剖面冲淤幅度的估算 |
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| 引用本文： | 李伯根,谢钦春,夏小明,马黎明,冯应俊,李炎.企望湾砂质海滩剖面冲淤幅度的估算[J].海洋学研究,2002,20(1):20-27. |
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| 作者姓名： | 李伯根 谢钦春 夏小明 马黎明 冯应俊 李炎 |
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| 作者单位： | 国家海洋局,第二海洋研究所,浙江,杭州,310012 |
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| 基金项目： | 浙江省自然科学基金资助项目 ( 4 990 2 9) |
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| 摘 要： | 以海滩沉积地貌现场观测资料为基础 ,通过海滩剖面形态组合 ,历史地形资料比较和特征地貌形态变化理论计算分析 ,对汕头南部企望湾弧形砂质海岸切线段的海滩剖面冲淤幅度进行了估算。结果表明 ,该海滩剖面冲淤幅度具有区段变化 ,低潮阶地和槽谷部位约 1 .5～ 2 .0m,滩肩和水下沙坝部位可达 3 .0 m。近 3 0年来 ,海滩剖面总体上趋于微冲刷 ,平均冲刷强度约为 1～ 2 cm/a,可能与近期人工挖砂有关。
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| 关 键 词： | 砂质海滩剖面 冲淤幅度 滩肩 沙坝 |
| 文章编号： | 1001-909X(2002)01-0020-08 |
| 修稿时间： | 2001年8月1日 |
Assessment on the adjustable fluctuation between erosion and deposition on beach profile in sandy arc-shaped shore of the Qiwangwan bay |
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| LI Bo-gen,XIE Qin-chun,XIA Xiao-ming,MA Li-ming,FENG Ying-jun,LI Yan.Assessment on the adjustable fluctuation between erosion and deposition on beach profile in sandy arc-shaped shore of the Qiwangwan bay[J].Journal of Marine Sciences,2002,20(1):20-27. |
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| Authors: | LI Bo-gen XIE Qin-chun XIA Xiao-ming MA Li-ming FENG Ying-jun LI Yan |
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| Abstract: | Analysed by the form character of beach profile,the variable calculation on feature morphology form and comparison between the historical topography data.This paper emphatically discussed the adjustable fluctuation between erosion and deposition on beach profile at the tangent section in sandy arc-shaped shore of the Qiwangwan bay,it usually ranges from 1.5m to 2.0 m on the location of the low tide terrace and longshore trough,and can reach a maximum of 3.0 m on the location of the beach berm and longshore bar.Beach profile trended to the gentle erosion with the average rate of about 1~2cm/a on the whole during the past 30 years,which might likely relate to sand digged by human recently. |
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| Keywords: | sandy beach profile erosional and depostional fluctuation beach berm bar |
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