Three-dimensional geoelectrical model of southern Kamchatka

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...

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Bibliographic Details
Published in:Izvestiya. Physics of the solid earth 2014, Vol.50 (1), p.9-31
Main Authors: Belyavksii, V. V., Aleksanova, E. D.
Format: Article
Language:English
Subjects:
Correlation
Earth
Earth and Environmental Science
Earth Sciences
Electric fields
Electrical conductivity
Electrical junctions
Fittings
Geophysics
Geophysics/Geodesy
Invariants
Mathematical models
Peninsulas
Three dimensional models
Volcanoes
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Summary: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.
ISSN:1069-3513
1555-6506
DOI:10.1134/S1069351314010029