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| 珠江磨刀门水道咸潮上溯加剧的原因 | |
| 引用本文： | 韩志远,田向平,刘峰.珠江磨刀门水道咸潮上溯加剧的原因[J].海洋学研究,2010,28(2):52-59. |
| 作者姓名： | 韩志远 田向平 刘峰 |
| 作者单位： | 1. 交通运输部,天津水运工程科学研究所,工程泥沙交通行业重点实验室,天津,300456 2. 中山大学,河口海岸研究所,广东,广州,510275 3. 华东师范大学,河口海岸学国家重点实验室,上海,200062 |
| 基金项目： | 广东省科技计划资助项目 |
| 摘 要： | 对磨刀门水道不同年份地形资料和多年枯季潮位资料进行了对比分析,结果表明:大规模的河床采砂,引起磨刀门上游河段河床大幅下切,河道深泓平均加深0.59~2.25 m,河槽容积平均增加8.91×106~12.11×106m3,使该河段枯季潮差增大,进潮量增加,潮汐动力增强,导致咸水界向上游河段推移;口门围垦整治后,磨刀门口门区由众多岛屿环抱而成的内海区变成人工导堤控制的"一主一支"两条水道,水域面积减少了80%,河槽容积减少了40%,深槽趋于顺直加深,使口门区的"调淡"作用消失,这是咸潮上溯的重要原因;根据多年水文频率分析,发生严重咸潮灾害时,西、北江枯季流量并非都是枯水流量,因此枯季上游来水量变化并不是近年来咸潮灾害加剧的主要原因。 |
| 关 键 词： | 咸潮上溯 河床演变 潮汐动力 河道采砂 口门整治 磨刀门水道 |
Study on the causes of intensified saline water intrusion into Modaomen Estuary of the Zhujiang River in recent years |
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| HAN Zhi-yuan,TIAN Xiang-ping,LIU Feng.Study on the causes of intensified saline water intrusion into Modaomen Estuary of the Zhujiang River in recent years[J].Journal of Marine Sciences,2010,28(2):52-59. | |
| Authors: | HAN Zhi-yuan TIAN Xiang-ping LIU Feng |
| Institution: | HAN Zhi-yuan1,TIAN Xiang-ping2,LIU Feng3(1.Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Engineering Sediment of Ministry of Communications,Tianjin 300456,China,2.Institute of Estuarine , Coastal Research,Sun Yat-sen University,Guangzhou 510275,3.State Key Laboratory of Estuarine , Coastal Research,East China Normal University,Shanghai 200062,China) |
| Abstract: | Modaomen Estuary is one of the main outlets of the Zhujiang River,where the four cities of Zhongshan,Jiangmen,Zhuhai and Macao are located.Since mid-1990s,saline water intruded frequently into Modaomen waterway,resulting in great impact on the production of agriculture and industry and the life of local residents during dry season.Large-scale engineering projects and human activities such as riverbed sand dredging and estuary regulation have resulted in some changes of channel topography and hydrodynamic co... |
| Keywords: | saline water intrusion riverbed evolvement tidal dynamic sand dredging estuary regulation Modaomen Estuary |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |