Using the magnetovariational sounding method to image the deep resistivity structure of the Trans-European suture zone



The conductivity distribution across the Trans-European Suture Zone (TESZ) is presented based on the measurements along a 400 km northeastern directed profile, starting from the German-Polish Basin, crossing the TESZ and ending at the East European Craton. Two-dimensional inversion was applied to magnetotelluric transfer functions and magnetovariational responses corresponding to 38 long-period simultaneously observed sites. Input data for the inversion procedure were created by rotating all transfer functions to strike direction obtained from strike and dimensionality analysis. The results show a thick sedimentary cover, several crustal inhomogeneities and a deep conductive structure below the center of the TESZ. In order to achieve a stable model, several sensitivity analysis were carried out.