近50年伶仃洋滩槽冲淤变化趋势分析  

An Analysis of The Tendency of Erosion and Sedimentation on Foreshore and Channels of Lingding Estuary in Past Fifty Years

作　　者：闻平 刘沛然 雷亚平[3] 任杰[3] 吴超羽[3] 

机构地区：[1]珠江水资源保护科研所,广东广州510611 [2]惠州市大亚湾环保局,广东惠州516081 [3]中山大学近岸海洋研究中心,广东广州510275

出　　处：《中山大学学报（自然科学版）》2003年第S2期240-243,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(40176026);国家973高科技资助项目(2002CB4124007)

摘　　要：伶仃洋河口湾是珠江口最大的河口复合体,其滩槽演变趋势对珠江三角洲防洪排涝、伶仃洋出海航道的维护、河口整治以及滩涂资源的开发利用等有重大影响。通过选取1953、1964、1974、1989、1998年海图进行对比,分析了伶仃洋近五十年来的滩槽冲淤变化情况,分析结果表明,伶仃洋的淤积是一种必然趋势,无论是水域面积还是容积均在减少,但各个滩槽不同水深的变化是不一样的,表现出"浅滩愈浅、深槽愈深"的特点。文章最后分析了伶仃洋滩槽冲於变化的成因。Lingding Bay is a supreme complex estuarine system of the Pearl River mouth. The tendency of change on foreshore and channels has a notable influence on flood control of the Pearl River Delta and maintenance of waterway and renovation of estuary and exploitation of beach land resource. In this papers, changes of erosion and sedimentation are analysed about foreshore and channels of Lingding Bay in past fifty years by using marine charts of 1953 and 1964 and 1974 and 1989 and 1998. The results showed that sedimentation of Lingding estuary is a inevitable tendency and that whether water surface area or cubage decreases. But changes are not same for different depth of foreshore and channels. Its characteristic shows that foreshores is shallower and deep channels is deeper. In the last, the cause of formation for changes of foreshore and channels of Lingding estuary are analyzed.

关 键 词：伶仃洋 滩槽演变 冲淤分析 

分 类 号：P737.121[天文地球—海洋地质]