Tomographic resolution limits for diffraction imaging

Author:

Huang Yunsong1,Zhang Dongliang1,Schuster Gerard T.1

Affiliation:

1. King Abdullah University of Science and Technology, Division of Physical Science and Engineering, Center for Subsurface Imaging and Fluid Modeling, Thuwal, Saudi Arabia..

Abstract

We derived formulas for the tomographic resolution limits [Formula: see text] of diffraction data. Resolution limits exhibited that diffractions can provide twice or more the tomographic resolution of specular reflections and therefore led to more accurate reconstructions of velocities between layers. Numerical simulations supported this claim in which the tomogram inverted from diffraction data was noticeably more resolved compared to that inverted from specular data. The specular synthetics were generated by sources on the surface, and the diffraction data were generated by buried diffractors. However, this advantage is nullified if the intensity and signal-to-noise ratio of the diffractions are much less than those of the pervasive specular reflections.

Publisher

Society of Exploration Geophysicists

Subject

Geology,Geophysics

Reference20 articles.

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3. Poststack velocity analysis by separation and imaging of seismic diffractions

4. Goldin, S., V. Khaidukov, V. Kostin, S. Ryan, and V. Tcheverda, 2000, Separation of reflected and diffracted objects by means of Gaussian beams decomposition: in Bermudez, A., D. Gomez, C. Hazard, P. Joly, and J. Roberts, eds. Proceedings of the 5th International Conference on Mathematical and Numerical Aspects of Wave Propagation: SIAM-INRIA.

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