Print Email Facebook Twitter Application Of Seismic Interferometry With Non-Physical Reflections Using Near-Surface Seismic Field Data Title Application Of Seismic Interferometry With Non-Physical Reflections Using Near-Surface Seismic Field Data Author Shirmohammadi, F. (TU Delft Applied Geophysics and Petrophysics) Draganov, D.S. (TU Delft Applied Geophysics and Petrophysics) Balestrini, F.I. (TU Delft Applied Geophysics and Petrophysics) Ghose, R. (TU Delft Applied Geophysics and Petrophysics) Date 2022 Abstract Seismic interferometry (SI) is a method that retrieves new seismic traces from the cross-correlation of existing traces, where one of the receivers acts as a virtual seismic source whose response is retrieved at other receivers. When using sources only at the surface, and the so-called one-sided illumination of the receivers occurs, we will retrieve not only the desired physical reflections but also non-physical (ghost) reflections. These non-physical reflections appear due to waves that propagate inside a subsurface layer. Thus, they contain information about the seismic properties of the specific layer. We illustrate the technique’s potential using numerically modelled data for a subsurface model with a low-velocity layer, which is also pinching out, and near-surface field data. We apply SI by cross-correlation and auto-correlation. Both resulting non-physical reflections are sensitive to the physical rock properties of the layer that causes them to appear in the SI results. Moreover, non-physical reflections in zero-offset gathers that result from SI by auto-correlation show very good conformity with the geometry of the subsurface layers. To reference this document use: http://resolver.tudelft.nl/uuid:679ac69c-2ee9-4299-8e1b-60a1cf27c967 DOI https://doi.org/10.3997/2214-4609.202220075 Embargo date 2023-07-01 ISBN 9789462824256 Source 28th European Meeting of Environmental and Engineering Geophysics, 2022 Event 28th European Meeting of Environmental and Engineering Geophysics, 2022-09-18 → 2022-09-22, Belgrade, Serbia Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2022 F. Shirmohammadi, D.S. Draganov, F.I. Balestrini, R. Ghose Files PDF 75.pdf 1.56 MB Close viewer /islandora/object/uuid:679ac69c-2ee9-4299-8e1b-60a1cf27c967/datastream/OBJ/view