With increasing global warming,the frequency and intensity of marine hazards,such as sea level rise and storm surge,may increase in coastal areas,and the resulting vertical seawater intrusion may cause the salinization of freshwater in aquifers over a large area.Concurrently,brackish water aquaculture in coastal shrimp ponds is in-creasing because of human activities,and the resulting vertical seawater intrusion may deteriorate groundwater quality and the ecological environment in coastal areas.Although some scholars have achieved substantial results in the study of seawater intrusion,the freshwater salinization and groundwater restoration must be elaborately studied owing to the complexity of seawater intrusion.This study describes the hazards of seawater intrusion and previous research approaches,summarizes their results,identifies the factors influencing seawater intrusion,and highlights the threats of flooding and aquaculture activities to aquifers in coastal areas.The following results were obtained in this study.(1)The common methods used to study seawater pendulous intrusion include indoor experiments and numerical simulations.(2)Vertical seawater intrusion is mainly related to topography,aquifer properties,and hy-drometeorological conditions.(3)Human activities such as shrimp pond farming may become a potential source of vertical seawater intrusion.Future studies on seawater intrusion should combine various field observation experi-mental methods.Numerical simulations should focus on mutual validation with experimental data obtained from field observations,and model simplification methods must be carefully examined.Moreover,possible vertical sea-water intrusion caused by human activities such as shrimp pond farming should be extensively studied.
维普
万方数据