Investigation of seawater intrusion using resistivity tomography: A case study in kinmen

Seawater intrusion has been a serious problem to coastal water-bearing strata around the world. Drilling to observe the water level and analysis of underground water sample have been the two major traditional techniques to approach to the problem. Since drilling data are just a single-site proof. Recently, Non-destructive technique of geophysical exploration has been employed to investigate the underground environment. With some drilling data we are likely to obtain data about “plane and space.” This study was aimed at assessing the performance of electrical resistivity tomography (ERT) applied to the investigation of seawater intrusion through a case study. The study was conducted to investigate the mechanism of the seawater intrusion with the assistance of ERT. Two two-dimensional (2D) ERT survey lines were deployed to Parallel and vertical the coastline. Each line were using Periodic measurements for time-lapse measurements. Combining ERT results with geotechnical monitoring data clearly indicates the likely mechanism of seawater intrusion. Time-lapse measurements further support the inducted mechanism. Integration of ERT exploration with time-lapse ERT measurements and geotechnical monitoring data was demonstrated to better understand the possible mechanism of the seawater intrusion.