近百年来长江河口航道拦门沙的形态演变(英文)

编号 zgly0001585186

文献类型 期刊论文

文献题名 近百年来长江河口航道拦门沙的形态演变(英文)

作者 和玉芳  程和琴  陈吉余 

作者单位 StateKeyLaboratoryofEstuarineandCoastalResearch  EastChinaNormalUniversity  TheSecondDesignandResearchInstituteofWaterConservancyandHydropowerofHebeiProvince 

母体文献 Journal of Geographical Sciences 

年卷期 2013年02期

年份 2013 

分类号 TV148.1 

关键词 YangtzeEstuary  mouthbar  insidesandbars  water-depthofthetopofthemouthbar  channelbar  regulationofestuary 

文摘内容       The mouth bar in the Yangtze estuarine waterways has a significant influence on navigational transport within the estuary,flood discharge and construction of the Shanghai Port.In this paper the morphological evolution and mechanisms of mouth bar formation of the Yangtze estuarine waterways are studied by analyzing hundreds of years of historical data and the latest profile maps of some or the main mouth bar channels in the Yangtze Estuary.The results are shown as follows:The mouth bars in the North Branch have moved gradually from outside the mouth to the inside and formed a huge sand bar.In the North Channel,the head of the mouth bar has migrated about 30 kilometers downstream,and a channel bar has been developing since 2001.Two mouth bar tops,which always existed in the North Passage,disappeared in 2010.The head of the mouth bar in the South Passage has migrated downstream about 14 km and the number of tops increased at first but is reduced to only one now.According to the results,we can conclude that the evolution of the mouth bars differs depending on their location.In the North Branch it is directly related to large-scale reclamation in Chongming Island,but in the North Passage it has a close relationship with regulation of the Yangtze Estuary Deepwater Channel.However,the evolution of mouth bars in the North Channel and South Passage is not only connected with the Yangtze Estuary Deepwater Channel Regulation Project,but also with the reclamation in the East Hengsha Shoal and the closure of the Qingcaosha Reservoir.