Dynamics of saltwater intrusion in the Modaomen Waterway of the Pearl River Estuary

作     者：WANG Biao ZHU JianRong WU Hui YU FuJiang SONG XueJia 

作者机构：State Key Laboratory of Estuarine and Coastal ResearchEast China Normal UniversityShanghai 200062China National Marine Environmental Forecasting CenterBeijing 100081China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2012年第55卷第11期

页      面：1901-1918页

核心收录：

学科分类：081504[工学-水利水电工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 

基　　金：supported by the "Creative Research Group" of National Natural Science Foundation of China (Grant No. 41021064) the National Basic Scientific Research Program of Global Change (Grant No.2010CB951201) Marine Special Program for Scientific Research on Public Causes (Grant No. 200705019) 

主　　题：Pearl River Estuary Modaomen Waterway saltwater intrusion abnormal characteristic dynamic mechanism 

摘      要：Observations indicate an abnormal characteristic of saltwater intrusion in the upper Modaomen Waterway of the Pearl River Estuary,i.e.,the maximum salinity occurs during the neap tide or the coming moderate tide instead of during the spring *** explore the associated dynamic mechanisms,a high resolution three-dimensional numerical model was set up based on the Finite Volume Coastal Ocean Model(FVCOM),which covered the entire river network,the Pearl River Estuary,and the adjacent *** experiments illustrated that the upper Modaomen Waterway is significantly influenced by the saltwater intrusion from the Hongwan Waterway,a narrow and shallow channel connecting the Modaomen Waterway to the *** topography,spring-neap tidal variation,local wind stress,and their interaction drive an up-estuary residual current in the Hongwan Waterway,which is much stronger during the neap tide than during the spring *** a result,more saltwater in the Hongwan Waterway is spilled over into the Modaomen Waterway during the neap tide or the coming moderate *** is the inherent dynamic mechanism why the saltwater intrusion in the upper Modaomen Waterway reaches its maximum during the neap tide or the coming moderate ***,we also found that the winter prevailing wind can pronouncedly enhance the saltwater intrusion in the Modaomen Waterway.