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Absorbing boundary conditions for wave-equation migration
KTH, School of Computer Science and Communication (CSC), Numerical Analysis, NA.
1980 (English)In: Geophysics, ISSN 0016-8033, Vol. 45, no 5, 895-904 p.Article in journal (Refereed) Published
Abstract [en]

The standard boundary conditions used at the sides of’s seismic section in wave-equation migration generateartificial reflections. These reflections from the edges of the computational grid appear as artifacts in the finalsection. Padding the section with zero traces on either 5ide adds to the cost of’migration and simply delays theine\ itable reflections.We develop stable absorbing boundary condition5 that annihilate almost all of the artificial reflections. Thisih demonstrated analytically and with synthetic examples. The absorbing boundary conditions presented canbe used with any ofthe different type\ of finite-diftcrence wa\e-equation migration, at essentially no extra cost.

Place, publisher, year, edition, pages
1980. Vol. 45, no 5, 895-904 p.
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-90518DOI: 10.1190/1.1441094OAI: diva2:505759
NR 20140805Available from: 2012-02-24 Created: 2012-02-24Bibliographically approved

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Engquist, Björn
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Numerical Analysis, NA
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