Vertical Electrical Soundings are among the first geophysical methods applied to
the study of the subsurface. A cuadripole is used to inject electricity into the ground and to measure the generated
voltage difference, thus obtaining the apparent resistivity.
By increasing electrode spacing deeper electrical resistivity
information is obtained. It is an effective and economical method to
investigate several hundred meters in depth from the surface. It is very used in hydrogeological studies for
groundwater location prior to drilling, and in shallower projects related
to the design of earth rods in power plants, etc.
Electrical Resistivity Tomography
It is one
of the most common tools for the characterization of the subsoil, due
mainly to the rapidity in data acquisition, to the null impact of the
survey in the field and to the wide range in electrical properties that
characterize typical ground materials.
For these reasons it is an essential tool in geologic, geotechnical, mining and
environmental investigation projects.
Geofisica Consultores uses state-of-the-art equipment, able to connect up to 960 electrodes in a
single array, making it possible to lay out long investigation profiles,
reaching deeper into the ground.
3D Electrical Resistivity Tomography
three-dimensional nature of most buried structures can make its study
insufficient from a bidimensional point of view.
Parallel profiles close to each other (and even in different directions) can be combined in a single processing
inversion to obtain a unique model of any given complex structure.
There are a lot of applications (quarry reservoir determination, contamination
plumes, karstic features…) that make it
necessary to face the study from a three-dimensional point of view.