Electrical Prospecting Methods, also known Geoelectric, studied by means of measurements made on the surface, the distribution in depth of some electromagnetic magnitude.

There are three main electromagnetic quantities could in principle be used to identify the bodies located in the basement. These magnitudes are

• Magnetic permeability.
• The dielectric constant.
• The resistivity and / or electrical conductivity.

There are many ways in the methods of electrical exploration of the underground, we will refer here only to those who consider most used.

NATURAL METHODS OF FIELD:

• Spontaneous Potential
• magnetotelluric.

METHODS OF ARTIFICIAL FIELD:

• Methods of current.: Vertical Electrical Soundings (VES), CT Electric, charged bodies.
• Variable Field Methods: Surveys and Electromagnetic pit in the time domain and frequency, VLF.
• Induced Polarization.
• Geo-radar.