Phase paradox in the Békés basin and a possibility for its resolution by 2D/3D modelling

Ádám, Antal and Kiss, M. (2001) Phase paradox in the Békés basin and a possibility for its resolution by 2D/3D modelling. Acta Geodaetica et Geophysica Hungarica, 36 (2). pp. 133-152. ISSN 1217-8977

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Abstract

In the area of the typical 3D Békés basin ("graben") high anisotropy (difference) appears in the extreme values of the magnetotelluric impedance phases in the period interval corresponding to the indication of the conductive asthenosphere. As proved by the forward 2D/3D modelling, this anisotropy can only be explained by a strong 2D effect. This fact may conform the validity of the results of the 2D inversion of PGT1 magnetotelluric data indicating the upwelling of the asthenosphere below the Békés basin.

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