摘要
选择长江口南港南小泓和南港主槽作为典型涨、落潮槽为研究对象，以 2001 年 9 月所采底沙的颗粒分析资料为根据，并结合实测水文、泥沙资料进行水动力分析, 运用 Gao-Collins 粒径趋势分析模型分析了底沙输移趋势，结果表明：南小泓的底沙主要是来自口门附近，由于涨潮流强于落潮流而使底沙向上游输移，即 SE—NW 方向，而南港主槽的底沙主要来自上游，由于落潮流强于涨潮流而使泥沙向下游输移，即 NW—SE 方向。
The typical flood and ebb channels: Nanxiaohong and Nangang main channels are chosen as research objects. Based on the distribution of bottom sediment and comprehensive analyses of hydrodynamics and observed sediment data, the paper applies the Cao-Collins model to calculate the sediment transport trends. The result shows that the sediment in Nanxiaohong is from the river mouth area. It transports upstream because the flood flow is stronger than the ebb flow, that is ,the direction is SE-WN. The sediment in Nangang main channel is from upstream. It transports to downstream because the ebb flow is stronger than the flood flow, that is, the direction is WN-SE. The directions, sources and mechanism of sediment transport are identified according to comprehensive analyses of hydrodynamics and observed sediment data.
出处
《海洋通报》
CAS
CSCD
北大核心
2003年第4期1-7,共7页
Marine Science Bulletin
基金
国家自然科学基金项目(40071013)资助
关键词
涨潮槽
落潮槽
长江河口
底沙输移方向
flood channel
ebb channel
bottom sediment
transport trend
