The article considers a number of factors that are not taken into account in interpretation the magnetic data, which often significantly reduces the degree of its reliability. It was proposed to apply the method of analytical continuation of the magnetic field downwards, developed by the author, to overcome the difficulties of solving the inverse problem (IP).

Ermokhin Konstantin M., Doctor of Technical Sciences, Leading Researcher, Pushkov institute of terrestrial magnetism, ionosphere and radio wave propagation of the Russian Academy of Sciences St.-Petersburg Filial (SPbF IZMIRAN), 199034, St.-Petersburg, Mendeleev line 1. E-mail: k_m_e@list.ru.

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