Video: Resistivity mapping introduction
In this video we introduce the resistivity method as an active survey type which probes the sub-surface in terms of its electrical resistivity. We derive a solution for the current flow density in a homogenous halfspace and then visualize the potential field for a two electrode setup. The need for a four electrode setup is explained.
Next we explore the possibility to map a lateral homogenous (vertically variable) sub-surface using the principal of vertical electrical sounding:
Video: Principle of vertical eletrical sounding
Next we explore the possibility to map a lateral homogenous (vertically variable) sub-surface using the principal of vertical electrical sounding: .. image:: VidResistivity2.png
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Vertical eletrical sounding