The seawater intrusion problem is modeled as coupled two parabolic differential equations, of which one is a flow equation, the other one a convection-diffusion equation.

• 海水入浸问题的数学模型是两个耦合抛物型偏微分方程。其中一个是关于压力的流动方程,另一个是关于浓度的对流扩散方程。