Correlation Analysis between Surface Water of Gusong River and Coastal Shallow Groundwater

According to the measured groundwater pollution concentration at two monitoring sections of Gusong River coast,adopting progressive dislocation correlation analysis method,correlation between surface water of Gusong River and groundwater pollution was analyzed.Result showed that propagation time of pollutant between river water and groundwater was longer.According to the water level observation data,river water level was>1 m higher than groundwater table.The groundwater infiltration parameter was determined through the field permeability test data.The Dupuit formula was used to calculate recharge and discharge relationship between river surface water and groundwater.It was obtained that the daily average recharge capacity of right-bank river water to groundwater was 3 m3,and pollution of river surface water had very small influence on groundwater.Using MATLAB software for data analysis and processing,regression equation was established.The chloride as correlation analysis example,results showed that groundwater chloride had the maximum correlation with observation well distance,and correlation with time and monitoring value of surface water was very small.The linear relationship between surface water and groundwater was not obvious.