Paraná River Project - Results: Electrical Resistivity Tomography

Resistivity setup Working hard Laying out the electrodes

Electrical Resistivity Tomography

Electric Resistance Tomography (ERT) can be used to establish variations in lithology in clay-rich deposits where the depth of penetration of GPR is insufficient. Resistivity was measured using a Campus Tigre resistivity meter with cables of 48 electrodes at 1 and 5 m spacing. Between 7 and 10 levels were measured in a Wenner configuration. Raw measurements are processed with the RES2DINV inversion model. The 1 m spaced survey was able to visualize the presence of a sandy layer with a thicknesses exceeding 0.5 m in the dominantly silty barhead.