| 粤西博贺沙坝-潟湖海岸及其近岸海床稳定状态分析 |
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| 引用本文： | 戴志军,陈锦辉,任杰.粤西博贺沙坝-潟湖海岸及其近岸海床稳定状态分析[J].台湾海峡,2007(1). |
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| 作者姓名： | 戴志军 陈锦辉 任杰 |
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| 作者单位： | 河海大学水文水资源与水利工程科学国家重点实验室，华东师范大学河口海岸学国家重点实验室，中山大学近岸海洋研究中心 江苏南京210092，华东师范大学河口海岸学国家重点实验室，上海200062，上海200062，广东广州510275 |
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| 基金项目： | 河海大学水文水资源与水利工程科学国家重点实验室开放基金资助项目(2005409011)，国家自然科学基金资助项目(40506021) |
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| 摘 要： | 结合华南弧形海岸的平衡与稳定特征,利用Gis和Envi软件对不同年份的海图进行数字化、等深线变化和海床冲淤计算对比.结果表明博贺沙坝-潟湖海岸近岸线处为相对淤积的动态平衡状态,近岸带海床相对稳定、海床冲淤幅度不大.但由于当前海面趋于上升、陆架泥沙来源减少以及近岸波浪等动力作用可能加强,近岸海床将出现由淤转冲的趋势.
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| 关 键 词： | 海洋地质 沙坝-潟湖海岸 近岸海床 稳定状态 粤西博贺 |
Analysis of the stable states in the nearshore sea-floor of bar-lagoon coast in Bohe,Yuexi |
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| DAI Zhi-jun,CHEN Jin-hui,REN Jie.Analysis of the stable states in the nearshore sea-floor of bar-lagoon coast in Bohe,Yuexi[J].Journal of Oceanography In Taiwan Strait,2007(1). |
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| Authors: | DAI Zhi-jun CHEN Jin-hui REN Jie |
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| Institution: | DAI Zhi-jun1,2,CHEN Jin-hui2,REN Jie3 |
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| Abstract: | Based on the types of stability and equilibrium of arc-shaped coast in South China,digitial process,changes in different isobaths and calculation of scouring and silting in different sea maps were analyzed by softwares Gis and Envi.The results suggested that dynamic accreted equilibrium state exist near the area of waterline in Bohe bar-lagoon coast,where the changes of scouring and silting of the nearshore zone was weak and the sea-floor in this study area had a relatively stable state.However,the trends from silting to scouring should occur because of the increased trend of present sea-level, decreased sediment source from the continent and the strengthened actions such as wave and tidal occurring along the nearshore zone. |
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| Keywords: | marine geology bar-lagoon coast nearshore sea-floor stable state Bohe Guangdong |
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