鄱阳湖湖流特征

Analysis of the characteristics of water current in Poyang Lake

基于2010—2014年湖流监测资料,分析了鄱阳湖湖流分布特征。结果表明：（1）鄱阳湖北部湖区流速最大,其次为主湖区、入江水道区,东部湖区最小;主槽流速大于洲滩和湖湾;枯水期流速大于平水期和丰水期。（2）相比于上世纪60-70年代,都昌站和康山站流速在同级水位情况下有所增大,棠荫站流速在同级水位落差下有所增大,星子站流速在同级水位落差下有所减少。

Based on the monitoring data of lake current from 2010 to 2014 ,this paper analyzes the distri-bution characteristics of the lake current in Poyang Lake. The results show 1）that the northern section of Poyang Lake has the largest flow rate,with the central section and inflow waterway being the second,and the eastern section the smallest;that the main channel flow rate is larger than the bottomland and lake bay;that the dry season flow rate is larger than the normal and rainy season;and 2 ）compared with 1960 s and 1970s,the flow rate at Duchang station and Kangshan station has increased in case of same water lev-el,and the flow rate at Tangyin station has incresaed and Xingzi station decreased.