Electromagnetics VLF

VLF is a low-cost electromagnetism solution for mapping shallow conductors. This technique uses existing transmitters that are used for communications with submarines. The frequency used is approximately 20 kHz, which in radio transmission corresponds to very low frequencies, hence the name of this technique (VLF). The VLF electromagnetic method allows the detection of conductors on the surface, but also as a tool to determine structures, faults, fractures.