Abstract

Abstract It is well known that geophysical observations are often complicated by a lot of factors. Detailed investigation of these noises enabled to develop a generalized scheme of their classification. From artificially created noise comes the first component of industrial noise, affecting practically all potential fields applied in geophysics. Instrumental component is associated with the properties of geophysical instruments. Difficulties of electrodes grounding are of some significance for geophysical potential fields with electrode scheme of measurements. Nonstationary noise comprises temporary variations of geophysical fields. Soil-vegetable factors are associated with some soil types and dense vegetation. Complex structure of geological section is most important. Oblique polarization (magnetization) complicates magnetic, SP, thermal and resistivity fields and disturbs geophysical fields.

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