FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045228063> ?p ?o ?g. }

• W2045228063 endingPage "22" @default.
• W2045228063 startingPage "1" @default.
• W2045228063 abstract "Multichannel filters are used to eliminate coherent noise from surface seismic data, for wavefield separation from VSP stacks, and for signal enhancement. Their success generally depends on the choice of the filter parameters and the domain of application. Multichannel filters can be applied to shots (monitors), common-receiver traces, CDP traces and stacked sections. Cascaded applications in these domains are currently performed in the seismic industry for better noise suppression and for signal enhancement. One-step shot-domain filtering is adequate for some applications. However, in practice, cascaded applications in shot-and common-receiver domains usually give better results when the S/N ratio is low. Multichannel filtering after stacking (especially after repeated applications in shot and/or receiver domains) may create undesirable results such as artificial continuations, or smearing and smoothing of small features such as small throw faults and fine stratigraphic details. Consequently, multichannel filtering after stacking must be undertaken with the utmost care and occasionally only as a last resort. Multichannel filters with fan-shaped responses (linear moveout filters) should be applied after NMO correction. These are the filters commonly used in the seismic industry where they have such names as velocity filters, moveout filters, f-k filters and coherency filters. Filtering before NMO correction may result in break-up and flattening especially of those shallow reflection events with relatively higher curvatures and diffractions. NMO correction is needed prior to wavefield separation from VSP stacks for the same practical reasons outlined above whenever source-receiver offsets are involved. Creation of artificial lineup and smearing at the outputs of multichannel filters is presently the common practical concern. Optimum multichannel filters with well-defined pass, reject and transition bands overcome the latter problems when applied before stacking and after NMO correction. The trace dimension of these filters must be kept small to avoid such lineups and the smoothing of small structures. Good results can be obtained with only five traces, but seven traces seems to be a better compromise both in surface and well seismic applications. The so-called f-k filtering and τ-p domain filtering are no exceptions to the above practical considerations. Residual static computations after multichannel filtering also need special consideration. Since multichannel filtering improves spatial continuity, residual static algorithms using local correlation, i.e. nonsurface-consistent algorithms, may be impractical especially after multichannel filtering." @default.
• W2045228063 created "2016-06-24" @default.
• W2045228063 creator A5046223904 @default.
• W2045228063 creator A5062816139 @default.
• W2045228063 date "1990-01-01" @default.
• W2045228063 modified "2023-09-26" @default.
• W2045228063 title "EFFICIENT MULTICHANNEL FILTERING OF SEISMIC DATA1" @default.
• W2045228063 cites W1966404354 @default.
• W2045228063 cites W1988786134 @default.
• W2045228063 cites W2012273674 @default.
• W2045228063 cites W2019549795 @default.
• W2045228063 cites W2020066974 @default.
• W2045228063 cites W2030125382 @default.
• W2045228063 cites W2042060720 @default.
• W2045228063 cites W2116781765 @default.
• W2045228063 cites W2116892352 @default.
• W2045228063 cites W2131595072 @default.
• W2045228063 cites W2135342701 @default.
• W2045228063 cites W2148694186 @default.
• W2045228063 cites W2312289374 @default.
• W2045228063 cites W84878633 @default.
• W2045228063 doi "https://doi.org/10.1111/j.1365-2478.1990.tb01832.x" @default.
• W2045228063 hasPublicationYear "1990" @default.
• W2045228063 type Work @default.
• W2045228063 sameAs 2045228063 @default.
• W2045228063 citedByCount "6" @default.
• W2045228063 crossrefType "journal-article" @default.
• W2045228063 hasAuthorship W2045228063A5046223904 @default.
• W2045228063 hasAuthorship W2045228063A5062816139 @default.
• W2045228063 hasConcept C106131492 @default.
• W2045228063 hasConcept C11413529 @default.
• W2045228063 hasConcept C115961682 @default.
• W2045228063 hasConcept C121332964 @default.
• W2045228063 hasConcept C127313418 @default.
• W2045228063 hasConcept C154945302 @default.
• W2045228063 hasConcept C165205528 @default.
• W2045228063 hasConcept C199360897 @default.
• W2045228063 hasConcept C24890656 @default.
• W2045228063 hasConcept C2779843651 @default.
• W2045228063 hasConcept C2780942248 @default.
• W2045228063 hasConcept C31972630 @default.
• W2045228063 hasConcept C33347731 @default.
• W2045228063 hasConcept C3770464 @default.
• W2045228063 hasConcept C41008148 @default.
• W2045228063 hasConcept C46141821 @default.
• W2045228063 hasConcept C54187759 @default.
• W2045228063 hasConcept C65682993 @default.
• W2045228063 hasConcept C99498987 @default.
• W2045228063 hasConceptScore W2045228063C106131492 @default.
• W2045228063 hasConceptScore W2045228063C11413529 @default.
• W2045228063 hasConceptScore W2045228063C115961682 @default.
• W2045228063 hasConceptScore W2045228063C121332964 @default.
• W2045228063 hasConceptScore W2045228063C127313418 @default.
• W2045228063 hasConceptScore W2045228063C154945302 @default.
• W2045228063 hasConceptScore W2045228063C165205528 @default.
• W2045228063 hasConceptScore W2045228063C199360897 @default.
• W2045228063 hasConceptScore W2045228063C24890656 @default.
• W2045228063 hasConceptScore W2045228063C2779843651 @default.
• W2045228063 hasConceptScore W2045228063C2780942248 @default.
• W2045228063 hasConceptScore W2045228063C31972630 @default.
• W2045228063 hasConceptScore W2045228063C33347731 @default.
• W2045228063 hasConceptScore W2045228063C3770464 @default.
• W2045228063 hasConceptScore W2045228063C41008148 @default.
• W2045228063 hasConceptScore W2045228063C46141821 @default.
• W2045228063 hasConceptScore W2045228063C54187759 @default.
• W2045228063 hasConceptScore W2045228063C65682993 @default.
• W2045228063 hasConceptScore W2045228063C99498987 @default.
• W2045228063 hasIssue "1" @default.
• W2045228063 hasLocation W20452280631 @default.
• W2045228063 hasOpenAccess W2045228063 @default.
• W2045228063 hasPrimaryLocation W20452280631 @default.
• W2045228063 hasRelatedWork W1968145028 @default.
• W2045228063 hasRelatedWork W2045228063 @default.
• W2045228063 hasRelatedWork W2046424744 @default.
• W2045228063 hasRelatedWork W2053405349 @default.
• W2045228063 hasRelatedWork W2064591405 @default.
• W2045228063 hasRelatedWork W2071702249 @default.
• W2045228063 hasRelatedWork W2074158319 @default.
• W2045228063 hasRelatedWork W2091687221 @default.
• W2045228063 hasRelatedWork W2335515558 @default.
• W2045228063 hasRelatedWork W4241701707 @default.
• W2045228063 hasVolume "38" @default.
• W2045228063 isParatext "false" @default.
• W2045228063 isRetracted "false" @default.
• W2045228063 magId "2045228063" @default.
• W2045228063 workType "article" @default.