M. Dobróka Department of Geophysics, University of Miskolc H-3515 Miskolc-Egyetemváros, Hungary

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Guided waves play important role in the investigation of near surface geological structures. As it is well-known guided waves contain information about the structural- and material parameters of the wave-guide model, so - using the methods of geophysical inversion - these characteristics can be determined by means of the frequency-dependent phase- and group velocity as well as absorption coefficient data. In this paper the approximate horizontal inversion method (Dobróka 1996) is combined with a seismic tomography procedure in order to reconstruct the 3D geometry of the wave-guide structure by means of dispersion data (group traveltimes) of the guided surface waves. The inversion procedure consists of two steps: first the local group velocities are determined at various frequencies by means of tomographic inversion of the group traveltimes, the local dispersion characteristics of the Love- or Rayleigh surface waves are then inverted in the second step. In our investigations a robust SIRT method (Dobróka 1996) is used for tomography and a simple Least Squares algorithm is applied for the inversion of the group velocity data.

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
per Year
per Year
Founder Magyar Tudományos Akadémia
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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