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dc.contributor.authorGurevich, Boris
dc.contributor.authorKeydar, S.
dc.contributor.authorLanda, E.
dc.date.accessioned2017-01-30T15:34:58Z
dc.date.available2017-01-30T15:34:58Z
dc.date.created2008-11-12T23:25:16Z
dc.date.issued2002
dc.identifier.citationGurevich, Boris and Keydar, Shemer and Landa, Evgeny. 2002. Multifocusing imaging over an irregular topography. Geophysics 67 (2): 639-643.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/47677
dc.identifier.doi10.1190/1.1468625
dc.description.abstract

If seismic data are acquired over an irregular topography, standard elevation statics methods may be inaccurate because the assumption of vertical raypaths will no longer be valid. An effective solution to the problem of irregular topography can be found through the use of the multifocusing method, in which large supergathers of seismic traces are stacked, each of which can span many common midpoint (CMP) gathers. This can be done by extending the multifocusing moveout formula to explicitly account for nonzero elevations of the source and receiver, as well as their horizontal coordinates.Implementation of this formula into the multifocusing algorithm is straightforward because estimating the necessary raypath information (i.e., emergence angles) is an integral part of the algorithm. The extended multifocusing moveout correction can be applied directly to the data acquired in areas of irregular topography without the need for prior elevation static corrections. Synthetic tests on such data show that the proposed technique results in a better alignment of reflection events.

dc.relation.urihttp://seg.org
dc.subjectacoustic imaging
dc.subjectseismology
dc.subjectacoustic focusing
dc.subjectgeometrical acoustics
dc.subjectgeomorphology
dc.subjectgeophysical techniques
dc.subjectsignal processing
dc.titleMultifocusing imaging over an irregular topography
dc.typeJournal Article
dcterms.source.volume67
dcterms.source.number2
dcterms.source.startPage639
dcterms.source.endPage643
dcterms.source.titleGeophysics
curtin.note

Published by the Society of Exploration Geophysicists.

curtin.note

2002 Society of Exploration Geophysicists.

curtin.note

Multifocusing imaging over an irregular topography

curtin.note

Geophysics, Volume 67, Issue 2, pp. 639-643 (March-April 2002)

curtin.note

Boris Gurevich,Shemer Keydar, and Evgeny Landa

curtin.identifierEPR-1048
curtin.accessStatusOpen access
curtin.facultyDepartment of Exploration Geophysics
curtin.facultyDivision of Resources and Environment


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