Aperture Effects In 2.5d Kirchhoff Migration: A Geometrical Explanation

dc.creatorHertweck T.
dc.creatorJager C.
dc.creatorGoertz A.
dc.creatorSchleicher J.
dc.date2003
dc.date2015-06-30T17:29:17Z
dc.date2015-11-26T15:41:11Z
dc.date2015-06-30T17:29:17Z
dc.date2015-11-26T15:41:11Z
dc.date.accessioned2018-03-28T22:49:41Z
dc.date.available2018-03-28T22:49:41Z
dc.identifier
dc.identifierGeophysics. , v. 68, n. 5, p. 1673 - 1684, 2003.
dc.identifier168033
dc.identifier
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0242663673&partnerID=40&md5=5c989595c72661dd8591735cc16b3825
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/102245
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/102245
dc.identifier2-s2.0-0242663673
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1264557
dc.descriptionSeismic images obtained by Kirchhoff time or depth migration are always accompanied by some artifacts known as migration noise, migration boundary effects, or diffraction smiles, which may severely affect the quality of the migration result. Most of these undesirable effects are caused by a limited aperture if the algorithms make no special disposition to avoid them. Strong amplitude variation along reflection events may cause similar artifacts. All of these effects can be explained mathematically by means of the method of stationary phase. However, such a purely theoretical explication is not always easily understood by applied geophysicists. A geometrical interpretation of the terms of the stationary-phase approximation in relation to the diffraction and reflection traveltime curves in the time domain can help to develop a more intuitive understanding of the migration artifacts. A simple numerical experiment for poststack (zero-offset) data indicates the problem and helps to demonstrate the effects and the methods to avoid them.
dc.description68
dc.description5
dc.description1673
dc.description1684
dc.descriptionAbma, R., Sun, J., Bernitsas, N., Antialiasing methods in Kirchhoff migration (1999) Geophysics, 64, pp. 1783-1792
dc.descriptionBleistein, N., (1984) Mathematical Methods for Wave Phenomena, , Academic Press Inc
dc.descriptionBleistein, N., On the imaging of reflectors in the earth (1987) Geophysics, 52, pp. 931-942
dc.descriptionBleistein, N., Cohen, J., Stockwell Jr., J., (2001) Mathematics of Multidimensional Seismic Imaging, Migration, and Inversion, , Springer-Verlag, New York, Inc
dc.descriptionČervený, V., (2001) Seismic Ray Theory, , Cambridge Univ. Press
dc.descriptionČervený, V., Soares, J., Fresnel volume ray tracing (1992) Geophysics, 57, pp. 902-915
dc.descriptionFelsen, L., Marcuvitz, N., (1973) Radiation and Scattering of Waves, , Prentice-Hall, Inc
dc.descriptionHagedoorn, J., A process of seismic reflection interpretation (1954) Geophys. Prosp., 2, pp. 85-127
dc.descriptionHubral, P., Schleicher, J., Tygel, M., Hanitzsch, C., Determination of Fresnel zones from traveltime measurements (1993) Geophysics, 58, pp. 703-712
dc.descriptionJames, G., (1976) Geometrical Theory of Diffraction for Electromagnetic Waves, , Peter Peregrinus Ltd
dc.descriptionMartins, J., Schleicher, J., Tygel, M., Santos, L., 2.5-D true-amplitude migration and demigration (1997) J. Seis. Expl., 6, pp. 159-180
dc.descriptionNewman, P., Amplitude and phase properties of a digital migration process (1975) 37th Ann. Internat. Mtg., Euro. Assn. Expl. Geophys., 8, pp. 397-403. , Republished in First Break, 1990
dc.descriptionRohr, K., Scheidhauer, M., Trehu, A., Transpression between two warm mafic plates: The Queen Charlotte fault revisited (2000) J. Geophys. Res., 105, pp. 8147-8172
dc.descriptionScheidhauer, M., Trehu, A., Rohr, K., (1999) Multi-Channel Seismic Reflection Survey Over the Northern Queen Charlotte Fault, Offshore British Columbia, , Geological Survey of Canada Open File Report 3779
dc.descriptionSchleicher, J., Hubral, P., Tygel, M., Jaya, M., Minimum apertures and Fresnel zones in migration and demigration (1997) Geophysics, 62, pp. 183-194
dc.descriptionSchleicher, J., Tygel, M., Hubral, P., 3-D true-amplitude finite-offset migration (1993) Geophysics, 58, pp. 1112-1126
dc.descriptionSchneider, W., Integral formulation for migration in two and three dimensions (1978) Geophysics, 43, pp. 49-76
dc.descriptionSun, J., On the limited aperture migration in two dimensions (1998) Geophysics, 63, pp. 984-994
dc.descriptionSun, J., On the aperture effect in 3-D Kirchhoff-type migration (1999) Geophys. Prosp., 47, pp. 1045-1076
dc.descriptionSun, J., Limited aperture migration (2000) Geophysics, 65, pp. 584-595
dc.descriptionSun, S., Bancroft, J., How much does the migration aperture actually contribute to the migration result? (2001) 71st Ann. Internat. Mtg., Soc. Expl. Geophys., pp. 973-976. , Expanded Abstracts
dc.descriptionTygel, M., Schleicher, J., Hubral, P., Pulse distortion in depth migration (1994) Geophysics, 59, pp. 1561-1569
dc.descriptionTygel, M., Dualities between reflectors and reflection-time surfaces (1995) J. Seis. Expl., 4, pp. 123-150
dc.descriptionWapenaar, C., The infinite aperture paradox (1992) J. Seis. Expl., 1, pp. 325-336
dc.descriptionYilmaz, Ö., Seismic data analysis (2001) Soc. Expl. Geophys.
dc.languageen
dc.publisher
dc.relationGeophysics
dc.rightsaberto
dc.sourceScopus
dc.titleAperture Effects In 2.5d Kirchhoff Migration: A Geometrical Explanation
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución