磨刀门水道咸潮上溯数值模拟及其分析  

Numerical simulation and analysis of saltwater intrusion to Modaomen waterway

作　　者：刘祖发[1] 丁波[1] 关帅[1] 陈记臣 张泳华[1] 于海霞[1] 

机构地区：[1]中山大学水资源与环境研究中心∥华南地区水循环与水安全广东省普通高校重点实验室,广东广州510275

出　　处：《中山大学学报（自然科学版）》2016年第6期1-9,共9页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(41301627)

摘　　要：根据磨刀门水道2006年11月和2007年1月的实测水位、盐度等资料,利用MIKE3对该地区咸潮上溯进行数值模拟。经率定验证后,水位与盐度模拟结果与实测值契合度较高,两者的拟合效果检测指标均较好。对数值模拟结果进行分析,结果表明:盐度的层化受地形、分流比及潮汐涨落变化等因素的影响,且由分层带来的盐度差造成水体密度差,进而产生垂向环流致使盐度出现异常变化;潮通量与盐通量的变化具有良好的相关性,反映出潮水运动的物质运输载体功能。Saline water intrusions at Modaomen waterway were numerically simulated by using MIKE3 based on measured water levels and salinities in November 2006 and January 2007 .Calibrated and vali-dated model showed good fitness for both water level and salinity in case of prediction and observation with good detection indexes.The results indicated that salinity stratification,influenced by topography, diversion ratio and other factors such as tidal fluctuation change,resulted in water density difference and then produced extraordinary change in salinity vertical circulation.The change of salt flux is relative to the tidal flux,suggesting that tide is the carrier of brine.

关 键 词：数值模拟 咸潮 磨刀门 特征分析 

分 类 号：P731.23[天文地球—海洋科学]