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Three-dimensional geoelectrical model of southern Kamchatka

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Abstract

The magnetotelluric data for the southern part of Kamchatka Peninsula are interpreted in the mode of three-dimensional (3D) model fitting of the invariant characteristics of impedance and tipper matrices. The interpretation yielded the distribution of electric conductivity in the crust and mantle of the Earth. Conductive blocks are revealed in the junction zone of the Kamchatka depression and Pribrezhnyi horst, as well as beneath the Mutnovskii-Vilyuchik and Avacha-Koryak groups of volcanoes. These blocks are confined to the sublatitudinally trending regional faults and to the upper part of the asthenosphere. The locations of the conductive zones are correlated to the distributions of low-density and low-velocity domains and areas of high seismic and volcanic activity, which is probably due to the significant fluid saturation of these zones.

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Authors and Affiliations

  1. Geoelectromagnetic Research Centre of the Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia

    V. V. Belyavksii

  2. Faculty of Geology, Moscow State University, Moscow, 119991, Russia

    E. D. Aleksanova

  3. OOO Nord-West, Moscow, Russia

    E. D. Aleksanova

Authors
  1. V. V. Belyavksii
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  2. E. D. Aleksanova
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Original Russian Text © V.V. Belyavksii, E.D. Aleksanova, 2014, published in Fizika Zemli, 2014, No. 1, pp. 11–32.

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Belyavksii, V.V., Aleksanova, E.D. Three-dimensional geoelectrical model of southern Kamchatka. Izv., Phys. Solid Earth 50, 9–31 (2014). https://doi.org/10.1134/S1069351314010029

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