Print Email Facebook Twitter An acoustic imaging method for layered non-reciprocal media Title An acoustic imaging method for layered non-reciprocal media Author Wapenaar, C.P.A. (TU Delft ImPhys/Acoustical Wavefield Imaging; TU Delft Applied Geophysics and Petrophysics) Reinicke Urruticoechea, C. (TU Delft Applied Geophysics and Petrophysics) Date 2019 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. To reference this document use: http://resolver.tudelft.nl/uuid:630be8fb-2a14-43f9-a5a6-af1ff80253f7 DOI https://doi.org/10.1209/0295-5075/125/34003 Embargo date 2020-03-08 ISSN 0295-5075 Source Europhysics Letters: a letters journal exploring the frontiers of physics, 125 (3) Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 C.P.A. Wapenaar, C. Reinicke Urruticoechea Files PDF NonReciprocalImagingRev1.pdf 4.19 MB Close viewer /islandora/object/uuid:630be8fb-2a14-43f9-a5a6-af1ff80253f7/datastream/OBJ/view