Print Email Facebook Twitter Data-driven Green's function retrieval and application to imaging with multidimensional deconvolution Title Data-driven Green's function retrieval and application to imaging with multidimensional deconvolution Author Broggini, F. Wapenaar, C.P.A. Van der Neut, J.R. Snieder, R. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2014-01-17 Abstract An iterative method is presented that allows one to retrieve the Green's function originating from a virtual source located inside a medium using reflection data measured only at the acquisition surface. In addition to the reflection response, an estimate of the travel times corresponding to the direct arrivals is required. However, no detailed information about the heterogeneities in the medium is needed. The iterative scheme generalizes the Marchenko equation for inverse scattering to the seismic reflection problem. To give insight in the mechanism of the iterative method, its steps for a simple layered medium are analyzed using physical arguments based on the stationary phase method. The retrieved Green's wavefield is shown to correctly contain the multiples due to the inhomogeneities present in the medium. Additionally, a variant of the iterative scheme enables decomposition of the retrieved wavefield into its downgoing and upgoing components. These wavefields then enable creation of a ghost-free image of the medium with either cross correlation or multidimensional deconvolution, presenting an advantage over standard prestack migration. Subject autofocusingMarchenkoscatteringinterferometryGreen's function To reference this document use: http://resolver.tudelft.nl/uuid:f1750374-9a25-4f81-a5d5-e99279aec31e DOI https://doi.org/10.1002/2013JB010544 Publisher American Geophysical Union Embargo date 2014-07-17 ISSN 2169-9356 Source Journal of Geophysical Research: Solid Earth, 119 (1), 2014 Part of collection Institutional Repository Document type journal article Rights © 2013 American Geophysical Union Files PDF Wapenaar_2014.pdf 2.18 MB Close viewer /islandora/object/uuid:f1750374-9a25-4f81-a5d5-e99279aec31e/datastream/OBJ/view