Field and laboratory Validation of ERT-Detected Subsurface Heterogeneity at the Meter Scale

摘要: Agriculture, industry, airport activities all have impact on the quality of soil and water. To improve risk assessment, monitoring, design implementation cost-effective preventive or mitigation measures and/or policies we require a better understanding underlying environmental processes. Spatial heterogeneity plays critical role for describing water solute transport processes in unsaturated zone. Heterogeneous flow soils is complex challenging to quantify due changes hydraulic properties across different spatial scales. We conducted an experiment involving field laboratory sensory techniques measurements examine 3D functional its physical drivers natural soil. We compare from ERT at two scales with observed distribution calculated samples TDR data. ERT helped visualize studied system. Although first high resistive feature could not be explained by tensiometer data, there was distinct difference retention curves inside outside feature, which creates resistivity values. These observations help us understand links between heterogeneous flow.