Campo DC | Valor | Idioma |
dc.contributor.author | Porsani, Milton José | - |
dc.contributor.author | Ursin, Bjorn | - |
dc.contributor.author | Silva, Michelângelo Gomes da | - |
dc.contributor.author | Melo, Paulo E. M. | - |
dc.creator | Porsani, Milton José | - |
dc.creator | Ursin, Bjorn | - |
dc.creator | Silva, Michelângelo Gomes da | - |
dc.creator | Melo, Paulo E. M. | - |
dc.date.accessioned | 2015-10-09T18:52:49Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0016-8025 | - |
dc.identifier.uri | http://repositorio.ufba.br/ri/handle/ri/18103 | - |
dc.description | Texto completo: acesso restrito. p.42–52 | pt_BR |
dc.description.abstract | We present a singular value decomposition (SVD) filtering method for the enhancement of coherent reflections and for attenuation of noise. The method is applied in two steps. First normal move-out (NMO) correction is applied to shot or CMP records, with the purpose of flattening the reflections. We use a spatial SVD filter with a short sliding window to enhance coherent horizontal events. Then the data are sorted in common-offset panels and the local dip is estimated for each panel. The next SVD filtering is performed on a small number of traces and a small number of time samples centred around the output sample position. Data in a local window are corrected for linear moveout corresponding to the dips before SVD. At the central time sample position, we sum over the dominant eigenimages of a few traces, corresponding to SVD dip filtering. We illustrate the method using land seismic data from the Tacutu basin, located in the north-east of Brazil. The results show that the proposed method is effective and is able to reveal reflections masked by ground-roll and other types of noise. | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.source | http://dx.doi.org/10.1111/j.1365-2478.2012.01059.x | pt_BR |
dc.subject | Local dip | pt_BR |
dc.subject | Eigenimage | pt_BR |
dc.title | Dip-adaptive singular-value decomposition filtering for seismic reflection enhancement | pt_BR |
dc.title.alternative | Geophysical Prospecting | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 61, n. 1 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
dc.publisher.country | Brasil | pt_BR |
Aparece nas coleções: | Artigo Publicado em Periódico (IGEO)
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