On the benefits of auxiliary transmission data for Marchenko-based Green’s function retrieval

Conference paper (2021)

Authors

J.R. van der Neut Applied Geophysics and Petrophysics - CEG
J. Brackenhoff ETH Zürich
G. Meles University of Lausanne
L. Zhang Applied Geophysics and Petrophysics - CEG
E.C. Slob Applied Geophysics and Petrophysics - CEG
C.P.A. Wapenaar Applied Geophysics and Petrophysics - CEG , ImPhys/Medical Imaging - AS
Research Group
Applied Geophysics and Petrophysics (CEG) (TU Delft)
Copyright: © 2021 J.R. van der Neut, J. Brackenhoff, G. Meles, L. Zhang, E.C. Slob, C.P.A. Wapenaar
DOI: https://doi.org/10.3997/2214-4609.202113099
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Published Date

2021

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Applied Geophysics and Petrophysics

Abstract

Green’s functions in an unknown medium can be retrieved from single-sided reflection data by solving a multidimensional Marchenko equation. This methodology requires knowledge of the direct wavefield throughout the medium, which should include forward-scattered waveforms. In practice, the direct field is often computed in a smooth background model, where such subtleties are not included. As a result, Marchenko-based Green’s function retrieval can be inaccurate, especially in severely complex media. In some cases, auxiliary transmission data may be available. In this extended abstract, we show how these data can be used to modify the Marchenko equation so that forward-scattered waveforms can be retrieved without additional knowledge of the medium.

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- Embargo expired in 21-04-2022