Electroconducting Elements of the Ultradeep Fluid–Fault Systems as Indicators of Seismically Active Zones of the Eastern Margin of the Eurasian Continent: Evidence from Magnetotelluric Data

V. M. Nikiforov; G. N. Shkabarnya; V. B. Kaplun; A. Yu. Zhukovin; I. M. Varentsov; N. A. Palshin; D. H. Cuong; N. N. Trung; D. Q. Hung

doi:10.1134/S1028334X18060284

Electroconducting Elements of the Ultradeep Fluid–Fault Systems as Indicators of Seismically Active Zones of the Eastern Margin of the Eurasian Continent: Evidence from Magnetotelluric Data

Authors: Nikiforov V.M.¹, Shkabarnya G.N.¹^,2, Kaplun V.B.³, Zhukovin A.Y.¹, Varentsov I.M.⁴, Palshin N.A.⁵, Cuong D.H.⁶, Trung N.N.⁶, Hung D.Q.⁶
Affiliations:
1. Il’ichev Pacific Oceanological Institute, Far Eastern Branch
2. Far Eastern Federal University
3. Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch
4. Troitsk Branch, Schmidt Institute of Physics of the Earth
5. Shirshov Institute of Oceanology
6. Institute of Marine Geology and Geophysics
Issue: Vol 480, No 2 (2018)
Pages: 831-838
Section: Geophysics
URL: https://journals.rcsi.science/1028-334X/article/view/193515
DOI: https://doi.org/10.1134/S1028334X18060284
ID: 193515

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Abstract

A fundamentally new conclusion that zones of high seismic activity are controlled by electroconducting (fluid-saturated) fragments rather than by the entire deep fault is drawn. It is shown that the areal abundance of earthquake foci in geoelectric blocks of the Earth’s crust within Sakhalin and Vietnam containing electroconducting formations is mostly controlled by their roof occurring at a depth of ≤15 km.