Role of electrical measurements at deep magnetotelluric sounding of the Earth
The study of deep structure of the Earth is of great interest for both applied (e. g., mineral exploration) and scientific research. The most common method of electromagnetic (EM) exploration is magneto-telluric sounding (MTS). This method is a passive method of research, which uses a wide range of natural geomagnetic variations as a powerful source of EM induction in the Earth. Improvement of the quality of MTS demands constant increase of resolving capacity and accuracy of measuring equipment, particularly electric channels. The results of the development of a new version of electrometer with increased, comparing to the known instruments, parameters level are described in the paper and the results of experimental tests of this electrometer, as a part of the long-term magnetotelluric station LEMI-420, are given.
Full Text:PDF (Русский)
Korepanov V. E., Svenson A. N., 2007. High precision non-polarized electrodes for field geophysical prospecting. Kiev: Naukova Dumka, 96 p. (in Russian).
Ladanivskyy B. T., Lyashchuk D. N., Sapuzhak Ya. S., Cheban V. D., 2005. Geoelectrical model of the articulation zone between the Carpathian foredeep and Eastern European platform along the profile of RP-4a Kosiv — Melnytsia-Podilska. Dopovidi NAN Ukraine ( 5), 99—104 (in Ukrainian).
Marple Jr. S. L., 1990. Digital spectral analysis and its applications. Moscow: Mir, 584 p. (in Russian).
Hewber P., 1984. Robustness in statistics. Moscow: Mir, 304 p. (in Russian).
Frumkin A. N., Bagotskyy V. S., Yofa Z. A., Kabanov V. N., 1952. Kinetics of electrode processes. Moscow: Publ. House of Moscow University, 319 p. (in Russian).
Conway B. E., 1965. Theory and Principles of electrode processes. New York: The Ronald Press, 303 p.
Egbert G. D., Booker J. R., 1992. Very long period magnetotellurics at Tucson Observatory: Implications for mantle conductivity. J. Geophys. Res. 97, 15099—15112.
Petiau G., 2000. Second generation of lead-lead chloride electrodes for geophysical applications. Pure Appl. Geophys., 157 (3), 351—382.
Semenov V., Pek J., Ádám A., Jóźwiak W., Ladanivskyy B., Logvinov I. M., Pushkarev P., Vozar J., and Experimental Team of CEMES Project, 2008. Electrical Structure of the Upper Mantle Beneath Central Europe: Results of the CEMES Project. Acta Geophysica 56, 957—981. doi: 10.2478/s11600-008-0058-2.
Serson P. H., 1973. Instrumentation for induction studies on land. Phys. Earth Planet. Int. 7, 313—322.
Yu T.R., Ji G.L., 1993. Electrochemical methods in soil and water research. Oxford: Pergamon Press, 462 p.