Time variant amplitude and phase dispersion correction for broadband data

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2015Time variant amplitude and phase dispersion correction for broadband dataAuthors: Feng YANG*Ronan SABLONRobert SOUBARASFeng YANG*CGG, Ronan SABLONCGG, and Robert SOUBARASCGGhttps://doi.org/10.1190/segam2015-5859847.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Contrary to conventional seismic that focuses on a narrow band in middle frequencies, broadband seismic aims at acquiring information within the whole bandwidth emitted by the source. A good knowledge of the source signature is thus of paramount importance in broadband processing. However, the measurement of source signature is difficult and the modeling results are not satisfactory in the low frequencies. Another source of wavelet distortions is that seismic waves suffer from energy loss and phase dispersion due to intrinsic and apparent absorption which vary laterally and in depth. To address these challenges, a data-driven time variant non-Gaussian wavelet estimation which is sensible to phase is developed. As demonstrated on a North Sea broadband dataset, the proposed technique is able to produce zero-phase data on an enlarged bandwidth, both on low and high frequencies. Keywords: phase, low frequency, high-resolution, dispersion, broadbandPermalink: https://doi.org/10.1190/segam2015-5859847.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2015ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2015 Pages: 5634 publication data© 2015 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 19 Aug 2015 CITATION INFORMATION Feng YANG*, Ronan SABLON, and Robert SOUBARAS, (2015), "Time variant amplitude and phase dispersion correction for broadband data," SEG Technical Program Expanded Abstracts : 4620-4625. https://doi.org/10.1190/segam2015-5859847.1 Plain-Language Summary Keywordsphaselow frequencyhigh-resolutiondispersionbroadbandPDF DownloadLoading ...