Electrical properties of Konkudero-Mamakan highlands in long radio wave range

The estimators of the effective resistance ρ~ determined in the Konkudero-Mamakan highland rocks in the long radio wave range by the radio sounding of impedance from the board of a plane. The area of 30 thousand km2 is examined at a frequency of 22.3 Hz. It is found that the effective resistance differentiates greatly in granitoids and in metamorphic rocks of the Proterozoic era, and the electrical and geological boundaries of these rocks coincide. The average values of ρ~ are 4000–16 000 Ohm·m in granitoid rocks and usually less than 1000–3000 Ohm·m in metamorphic rocks. The highest ρ~ (>8000 Ohm·m) is a feature of outcropped granitoids nonoverlaid with alluvium. The method of remote sounding used in the experiments allowed fast investigation of a vast hard-to-reach area. This method enables realtime determination of the effective resistance in the upper crust, which is essential in geological engineering surveys of the routes of pipelines, power transmission lines and communication lines. The airborn prospecting results are used in applied engineering geophysics, geology and transportation construction projects.

Bashkuev Yu. B., Buyanova D. G. Electrical properties of Konkudero-Mamakan highlands in long radio wave range. MIAB. Mining Inf. Anal. Bull. 2023;(2):86-96. [In Russ]. DOI: 10.25018/0236_1493_2023_2_0_86.

The study was supported by the Ministry of Science and Higher Education of the Russian Federation in the framework of large R&D project in priority development areas in science and technology, Grant No. 075-15-2020-787: Fundamentals, Methods and Technologies of Digital Monitoring and Prediction of Ecological Situation in the Baikal Natural Territory.

Yu.B. Bashkuev¹, Dr. Sci. (Eng.), Professor, e-mail: buddich@mail.ru, ORCID ID: 0000-0002-7102-3977,
D.G. Buyanova¹, Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail: dbuy@mail.ru, ORCID ID: 0000-0002-9187-0735, 
¹ Institute of Physical Materials Science, Siberian Branch of Russian Academy of Sciences, 670047, Ulan-Ude, Russia.

D.G. Buyanova, e-mail: dbuy@mail.ru.

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