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The apparent resistivity values (and IP) used by RES2DINV software are given in a text file with.

Besides normal surveys carried out with the electrodes on the ground surface, the program also supports aquatic and cross-borehole surveys. You can process pseudo sections with up to 16000 electrode positions and 70000 data points at a single time on a computer with 4 gigabytes (GB) of RAM. In addition to these common arrays, the program even supports non-conventional arrays with an almost unlimited number of possible electrode configurations (Loke et al. RES2DINV program can be used for surveys using the Wenner, pole-pole, dipole-dipole, pole-dipole, Wenner-Schlumberger, gradient and equatorial dipole-dipole (rectangular) arrays. However, the program can also handle data sets with a non-uniform electrode spacing. The survey is usually carried out with a system where the electrodes are arranged along a line with a constant spacing between adjacent electrodes.

This program is designed to invert large data sets (with about 200 to 100000 data points) collected with a system with a large number of electrodes (about 25 to 16000 electrodes). Many different multi-electrode systems have been developed over the past 15 years using different arrangements of the cables and measurement strategies (Loke, 2011). Formatting Array Input Data File in RES2DINV: surface electrodes for any geometryĮxample of electrodes arrangement and measurement sequence that can be used for a 2-D electrical imaging survey is shown on the left.