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《Coastal Engineering》 2007-02
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An Approach to Water and Sediment Diversion Ratios and Transports in the Changjiang River Estuary Area

HU Jing,CHEN Shen-liang,GU Guo-chuan(State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China)  
In this paper,the ebb water and sediment diversion ratios and the net discharge water and sediment diversion ratios in the Changjiang River estuary area are calculated by using the hydrographic data observed in the estuary area in September,2002 and the standard hydrodynamic method.It is shown from the calculated results that the ebb water and sediment diversion ratios are different from the net discharge ones,the net discharge diversion ratios are more capable of reflecting the effects of water diversion and sediment diversion on evolution of the Cahgjiang Rover estuary,and the sediment influx ratio is more capable of indicating the sediment influx into the north branch.It is shown from the flow and sediment balance analysis results that there were siltation in the north branch and erosion in the south branch.The analysis results also expound the water and sediment movement characteristics,and the differentiation between water transport and sediment transport is one of reasons for the sediment transport in the north channel greater than that in the south channel.
【Fund】: 上海市科委重大科技攻关项目——上海市滩涂资源可持续利用研究(04DZ12049)
【CateGory Index】: TV148.1
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