A Study of Water Table and Subsurface Using 3-Dimensional Ground Penetrating Radar

Abstract

Ground penetrating radar (GPR) is a geophysical method that has been developed for shallow subsurface investigation and efficiently used broad area focusing in hydrogeology study. It provides non-destructive and rapid way of obtaining continuous high resolution profiles which are based on the propagation of electromagnetic waves. Conductivity and dielectric properties are two important parameters in GPR method. As in sediment, water saturation primarily causes changes in dielectric properties and therefore, this method is best applied in estimation of depth to water table. Six parallel 2-dimensional GPR lines were executed in Seri Iskandar, Tronoh, Perak, Malaysia with the aim of detecting the depth of water table and analyzing the environment of depositing sediments. Results are presented in 3-dimensional cube for better interpretation and explanation. Based on results obtained, it successfully detected the saturated zone, which suggested as water table with depth of >15-20m. Layer of reclaimed sand detected at depth <3m with nonuniform sand sedimentation and dipping layer detected at depth <10m. Wet zone is detected at depth of <10-15m.

GPR Detection of Fossil Structures in Conductive Media Supported by FDTD Modelling and Attributes Analysis: An Example from Early Pleistocene Marine Clay at Bargiano Site (Central Italy)

“…Among the available geophysical tools, the Ground Penetrating Radar (GPR) is frequently used in geology in particular for shallow prospections requiring high resolution [1][2][3][4]. Over time, GPR has proven useful in soil studies [5], sedimentology [6], in fault and fracture characterization [7][8][9][10], in hydrogeology [11][12][13][14][15][16][17][18][19], and in archeological applications [20][21][22][23].…”