Spatial distribution of urban man-made electromagnetic noise in the 0.01–30 Hz frequency range

It is generally accepted that the main power frequency electricity consumers produce a high level of low frequency electromagnetic noise. This is true; however, magnetic noise in the 0.0130 Hz frequency range, generated, as an example, by moving or rotating sources of ferromagnetic and electromagnetic fields, having intrinsic magnetic moments, which produce changes in the Earth's magnetic field. In addition, there are some other sources of electromagnetic fields that produce phenomena of electromagnetic induction and self induction of metal conductors, as well as the effects induced by moving conductors in the external magnetic field.