Bottom Sediment Transport in the Flood and Ebb Channels of the Changjiang Estuar

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Bottom Sediment Transport in the Flood and Ebb Channels of the Changjiang Estuary

Nanxiaohong and Nangang main south channel are chosen as the typical flood and ebb channels. Hydrodynamics analysis based on field hydrological and sediment data is conducted with Gao-Collins model to analyse sediment transport trends. Also, the grain size distribution analysis of the bottom sediment sampled in Sep. 2001 is used as the base of the analysis. The result shows that the sediment in Nanxiaohong is from the rive mouth area. The sediment transports upwards with the flood flow which is stronger than the ebb flow, i.e., in the direction of SE-WN. The sediment in main south channel comes from upward. They transport downwards with the ebb flow, which is stronger than the flood flow, i.e., in the direction of WN-SE. The directions, sources and mechanism of sediment transport are identified according to comprehensive analyses of the observed data on hydrodynamics and sediment.水利论文7~'M;\mZ/KJ#k

作 者: 刘高峰 沈焕庭 王永红 吴加学  
作者单位:刘高峰(State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;Estuary and Coast Science Research Center, Ministry of Communications, Shanghai 201201, China)
:zJeN5A%t3P'D0沈焕庭,王永红(State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China)
u8sOb6LS:b1sSs0吴加学(Estuary and Coast Science Research Center, Ministry of Communications, Shanghai 201201, China) 
刊 名:海洋通报(英文版) 
英文刊名:MARINE SCIENCE BULLETIN 
年,卷(期):2004 6(1) 
分类号: 
关键词:Flood channel   Ebb channel   Changjiang Estuary   Sediment transport  
机标关键词:the Changjiang Estuarysediment transportgrain size distributionbottom sediment 
基金项目: 
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