Reverse time migration in tilted transversely isotropic media

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This paper presents a reverse time migration (RTM) method for the migration of shot records in tilted transversely isotropic (TTI) media. It is based on the tilted TI acoustic wave equation that was derived from the dispersion relation. The RTM is a full depth migration allowing for velocity to vary laterally as well as vertically and has no dip limitations. The wave equation is solved by a tenth-order finite difference scheme. Using 2D numerical models, we demonstrate that ignoring the tilt angle will introduce both lateral and vertical shifts in imaging. The shifts can be larger than 0.5 wavelength in ... continued below

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Zhang, Linbing; Rector, James W., III & Hoversten, G. Michael July 2004.

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Description

This paper presents a reverse time migration (RTM) method for the migration of shot records in tilted transversely isotropic (TTI) media. It is based on the tilted TI acoustic wave equation that was derived from the dispersion relation. The RTM is a full depth migration allowing for velocity to vary laterally as well as vertically and has no dip limitations. The wave equation is solved by a tenth-order finite difference scheme. Using 2D numerical models, we demonstrate that ignoring the tilt angle will introduce both lateral and vertical shifts in imaging. The shifts can be larger than 0.5 wavelength in the vertical direction and 1.5 wavelength in the lateral direction.

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  • Other Information: Journal Publication Date: 2004

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  • Report No.: LBNL--57447
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 843008
  • Archival Resource Key: ark:/67531/metadc788371

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • May 5, 2016, 2:03 p.m.

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Zhang, Linbing; Rector, James W., III & Hoversten, G. Michael. Reverse time migration in tilted transversely isotropic media, article, July 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc788371/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.