Effects of Near Surface Soil Moisture Profiles During Evaporation on Far-Field Ground-Penetrating Radar Data: A Numerical Study

摘要: We investigated the eff ects of a drying front that emerges below an evaporating soil surface on far-field ground-penetrating radar (GPR) data. First, we performed analysis width in soils with 12 diff erent textures by using analytical model. Then, numerically simulated vertical moisture profiles develop during evaporation for textures. simulations Richards flow model considers only liquid water and coupled water, vapor, heat flows. The GPR signals were then generated from content taking into account frequency dependency apparent electrical conductivity dielectric permitivity. approach indicated at end Stage I was larger silty than other smaller sandy soils. also demonstrated estimate can be considered as proxy impact could have numerical led to conclusion vapor transport resulted S-shaped profiles, which clearly influenced As result, needs when data are interpreted inversion approach. Moreover, These effects provide promising perspectives regarding use radars monitoring.