We present the results of a study of the crustal structure of the northern part of the Central Sikhote-Alin Fault (CSAF) by methods of microseismic sounding (MSS) and magnetotelluric sounding (MTS). A geoelectric section based on MTS data and a section of relative velocities of P-waves according to MSS data were constructed and interpreted at a depth of up to 9 km and a length of 42 km. The main blocks, their boundaries, fault zones and some anomaly zones identified by microseismic and magnetotelluric sounding practically coincide. The CSAF zone is expressed by a narrow subvertical zone between high resistivity blocks. The data obtained indicate that the fault zone in the study area is impermeable. A similar structure was identified 6 km northwest of the CSAF zone, which can be traced to twice the depth (up to 20 km). It is concluded that the combination of microseismic and magnetotelluric sounding methods is promising for studying the structure of the Earth's crust in fault zones.

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The geoelectric section of the lithosphere was constructed down to a depth of 150 km based on the results of magnetotelluric (MT) sounding carried out along the profile that extends along the eastern edge of the Khanka massif to the coast of the Sea of Japan, from the northern part of the massif to the Sikhote-Alin fold system (SASS). Conductive zones in the crust and zones of increased electrical resistivity in the upper mantle were distinguished. Differences in geoelectric characteristics of the Earth’s crust in the Late Proterozoic–Paleozoic Khanka massif and in the Tsentralnaya zone of the Albian-Cenomanian SASS were revealed. The latitudinal zonality of the crust and upper mantle was confirmed. The influence of the coast effect on the behavior of the Wiese vectors was studied and their relationship with conducting zones in the crust and faults was shown.