An acoustic imaging method for layered non-reciprocal media

Journal Article (2019)
Author(s)

Kees Wapenaar (ImPhys/Acoustical Wavefield Imaging , TU Delft - Applied Geophysics and Petrophysics)

Christian Reinicke (TU Delft - Applied Geophysics and Petrophysics)

ImPhys/Acoustical Wavefield Imaging
Copyright
© 2019 C.P.A. Wapenaar, C. Reinicke Urruticoechea
DOI related publication
https://doi.org/10.1209/0295-5075/125/34003
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 C.P.A. Wapenaar, C. Reinicke Urruticoechea
ImPhys/Acoustical Wavefield Imaging
Issue number
3
Volume number
125
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Abstract

Given the increasing interest for non-reciprocal materials, we propose a novel acoustic imaging method for layered non-reciprocal media. The method we propose is a modification of the Marchenko imaging method, which handles multiple scattering between the layer interfaces in a data-driven way. We start by reviewing the basic equations for wave propagation in a nonreciprocal medium. Next, we discuss Green’s functions, focusing functions, and their mutual relations, for a non-reciprocal horizontally layered medium. These relations form the basis for deriving the modified Marchenko method, which retrieves the wave field inside the non-reciprocal medium from reflection measurements at the boundary of the medium. With a numerical example we show that the proposed method is capable of imaging the layer interfaces at their correct positions, without artefacts caused by multiple scattering.

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