关键词: 地壳地幔电导率, 地电不均匀性, 中欧

Abstract: The model of the electrical resistivity distribution within the Bohemian Massif (BM) to crustal and uppermost-mantle depths was derived from a series of magnetotelluric (MT) stations in the Czech and Slovak Republics. Estimates of electric resistivity to crustal and mid-mantle depths were obtained especially from MT data for periods ranging from pulsations to long-period variations, and further from the magnetic continuum spectrum method using the data of the Budkov and Prhonice permanent observatories (Geophysical Institute, Acad. Sci, Czech Republic, Prague). Zones of prominent geoelectrical inhomogeneities were mapped from distribution of the geomagnetic induction vectors across the European area. The ranges of apparent resistivities in the Bohemian Massif were compared with those obtained from induction scale lengths (ISL) and W₁-responses at relevant central European observatories. The conductivity ranges were estimated from the resistivity/depth graph corresponding to the substitute perfect conductor inversion.

Key words: Crustal and mantle conductivity, Geoelectrical inhomogeneities, Central Europe