1. The theory of deep EM sounding on the base of analysis of the Earth EM field (divided into inner and outer parts, normal and anomalous ones, near-surface and deep anomalies). Data interpretation of deep EM sounding, sedimentary basins, core and mantle conductive zones, and hypotheses of their origin.

2. The theory and field technology of deep magnetotelluric sounding, taking into account the deep and near-surface inhomogeneities' influence, and MT data interpretation for 1D, 2D and 3D cases.

3. The theory of marine geoelectrics, directed to estimation of its possibilities and practical recommendation for geolectrics on aquatorias.

4. Deep geoelectrical mapping and division of former USSR territory. Construction of geoelectrical models for many geotectonical provinces: South-Caspian mega-depression, Turane plate, Ferganian and Chuyskaja depressions, Bajkal rift zone, etc.

Prof. M.N.Berdichevsky published more than 350 scientific articles and monographies, many of them were translated into foreign languages.

References.

Berdichevskij M.N., 1961. Magnetotelluric field in horizontally inhomogeneous media. Prikl. Geofiz., pp.31-38

Berdichevskij M.N. 1965. Electrical prospecting with the telluric current method. Q. Colorado school of Mines, 60 (1).

Berdichevskij M.N. 1968. Electrical prospecting by the Method of Magnetotelluric Profiling. Moscow, Nedra, 255 pp.

Berdichevskij M.N., Borisova V.P., Bubnov V.P., Vanyan L.L., Fel'dman I.D. and Yakovlev I.A. 1969. Anomalous electrical conductivity in the Earth's crust in Yakutia. Izv. Akad. Nauk SSSR, Fiz. Zemli, 10, p.43-49.

Berdichevskij M.N., Dmitriev V.I. and Yakovlev I.A. 1973. Magnetotelluric sounding in horizontally inhomogeneous media. Izv. Akad. Nauk SSSR, Fiz. Zemli, 1, pp.73-92.

Berdichevskij M.N., Chernyavskiy G.A. and Al'perovich I.M. 1976. Deep magnetotelluric surveys in Sakhalin. In: A.Adam (editor). Geoelectric and Geothermal studies. Akademia Kiado, Budapest, pp.702-707.

Berdichevskij M.N., Zhdanov M.S. and Feinberg E.B. 1976. Electrical conductivity functions in the magnetotelluric and magnetovariation methods. Ann. Geophys., 32, 301-318.

Berdichevsky M.N., Zhdanov M.S. Advansed theory of Deep Geomagnetic Sounding. Amsterdam, Elsevier, 1984. - 408 pp.

Dmitriev V.I., Berdichevsky M.N. The fundamental model of magnetotelluric sounding.// IEEE Proc. - 1979.- 67.-P.1034-1044.

Berdichevsky M.N., Vanyan L.L., Dmitriev V.I. Methods used in the USSR to reduce near-surface inhomogeneity effects on deep magnetotelluric sounding. Phys. Earth Planet. Inter., 1989. Vol.53, p.194-206.

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[IPI_MTS - program for 1D madneto-telluric sounding interpretation. ]