摘要
基于冬季实测的悬浮体及潮流数据,分析丁字河口附近海域悬浮体的分布、组成及变化动力因素。研究结果表明:水平方向上,海域表层悬浮体浓度总体呈南高北低的分布趋势;垂直方向上,底层悬浮体浓度要明显高于表层,且分布形式较表层更为复杂。但在丁字河口附近及悬浮体高值区二者分布形态一致。悬浮体粒径与潮流流速有明显的相关性,最粗粒径出现在落急阶段,最细粒径出现在涨憩期间。主要为涨、落潮期悬浮体来源及携砂能力不同所致。
Based on the suspended matters（SM） and tidal current data,the distribution,composition and changes in hydrodynamics of SM were studied.The results show that,on horizontal direction,the distribution of surface SM was lower in north but higher in south areas;on vertical direction,the bottom SM were significantly higher than the surface,and its distribution pattern is more complex.However,the distributions of surface and bottom SMs adjacent to T-shaped estuary are conformity with that in high concentration area.There was obvious relevance between the grain size of SM and the tidal current velocity;the most coarse grain size appeared in the maximum current speeds in ebb tide,the thinnest grain size appeared in the smallest current speeds in flood tide.This was mainly caused by the changes of sediment sources and different sand-carrying capacities during the flood and ebb periods.
出处
《红水河》
2012年第4期44-48,共5页
Hongshui River
关键词
悬浮体
粒径变化
潮流
响应
suspended matters
grain size changes
tidal current
response
