Study and simulation of soil salinity evolution by Reflexw and GprMax

Abstract

Degradation of soil quality is a serious threat to the sustainability of irrigated systems. To prevent this degradation, it becomes necessary to develop simulation models to assess the long-term effects of road practices. The main purpose of this article is to simulate the salt signals taken by the GPR radar, using Reflexw and GprMax softwares. Note, however, that the operation of these two programs is based on numerical methods including finite difference method (FD) for Reflexw and finite difference time domain (FDTD) for GprMax. During the spread of radar signal in a geological environment, we note that the signal decreases because of the phenomenon of absorption and reflection, and we find that the physical setting that has a great influence on the conduct of the wave in different geological environments is the effective permittivity.