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Volume 50 Number 6
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

A new filtering technique for single‐fold wide‐angle reflection/refraction seismic data is presented. The technique is based on the wavelet decomposition of a set of adjacent traces followed by coherence analysis. The filtering procedure consists of three steps. In the first, a wavelet decomposition of traces into different detail levels is performed. In the second, the coherence attributes for each level are evaluated by calculating cross‐correlation functions of detail portions contained in a space–time moving window. Finally, the filtered traces are obtained as a weighted reconstruction of the trace details. Each weight is obtained from the coherence‐attributes distribution estimated in a proper interval. A sequence of tests is then conducted in order to select possible optimum or unsuitable wavelet bases. The efficiency of the filter proposed was assessed by calculating some properly designed parameters in order to compare it with other standard de‐noising techniques. The proposed method produced a clear signal enhancement in high‐density wide‐angle seismic data, thus proving that it is a useful processing tool for a reliable correlation of seismic phases.

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2002-11-18
2024-04-20

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References

  1. BABEL
    BABEL1992. BABEL Project, First Status Report.Commission of the European Communities, Doctorate Generale Brussels XII, p. 155.
  2. BABEL Working Group
    BABEL Working Group1991. Recording marine airgun shots at offset between 300 km and 700 km. Geophysical Research Letters18, 645 – 648.
    [Google Scholar]
  3. CˇervenýS., MolotkovI.A. and PšencíkI.1977. Ray Method in Seismology. Univerzita Karlova, Praha.
    [Google Scholar]
  4. ChironiC., De LucaL., GuerraI., LuzioD., MorettiA., VitaleM. and Sea‐Land Group2000. Crustal structures of the southern Tyrrhenian Sea and the Sicily channel on the basis of M25, M26, M28, M39 WARR profiles. Bollettino della Società Geologica Italiana119, 189 – 203.
    [Google Scholar]
  5. ChironiC., De LucaL., LuzioD., VitaleM. and Gruppo Sea Land1997. Algoritmi di stacking per il processing di sezioni sismiche litosferiche a grande angolo. Atti del 16° Convegno G.N.G.T.S., Rome (CD ROM), 03.16, p. 15.
  6. CoifmanR.R. and WickerhauserM.V.1993. Wavelets and adapted waveform analysis. A toolkit for signal processing and numerical analysis. Proceedings of Symposia in Applied Mathematics47, 119 – 145.
    [Google Scholar]
  7. DaubechiesI.1992. Ten Lectures on Wavelets. Society for Industrial and Applied Mathematics.
     [Google Scholar]
  8. DeighanA.J. and WattsD.R.1997. Ground roll suppression using the wavelet transform. Geophysics62, 1896 – 1903.
    [Google Scholar]
  9. DonohoD.L.1995. De‐noising by soft‐thresholding. IEEE Transactions on Information Theory41, 613 – 627.
    [Google Scholar]
  10. DonohoD.L. and JohnstoneI.1994. Ideal spatial adaptation by wavelet shrinkage. Biometrika81, 425 – 455.
    [Google Scholar]
  11. DoyleH.1995. Seismology. John Wiley & Sons, Inc.
     [Google Scholar]
  12. FediM. and QuartaT.1998. Wavelet analysis for the regional residual and local separation of the potential field anomalies. Geophysical Prospecting46, 507 – 525.
    [Google Scholar]
  13. Foufoula‐GeorgiouE. and KumarP.1994. Wavelets in Geophysics. Academic Press, Inc.
     [Google Scholar]
  14. GallartJ., VidalN., DanobetiaJ.J. and the ESCI‐Valencia Trough Work Group1994. Lateral variation in the deep crustal structure at the Iberian margin of the Valencia trough imaged from seismic reflection methods. Tectonophysics232, 59 – 75.
    [Google Scholar]
  15. GrubbH.J. and WaldenA.T.1997. Characterizing seismic time series using the discrete wavelet transform. Geophysical Prospecting45, 183 – 205.
    [Google Scholar]
  16. KleinerB. and GraedelT.E.1980. Exploratory data analysis in the geophysical sciences. Reviews of Geophysics and Space Physics18, 699 – 717.
    [Google Scholar]
  17. KramerH.P. and MathewsM.V.1956. A linear coding for transmitting a set of correlated signals. IEEE Transactions on Information TheoryIT‐2, 41 – 46.
    [Google Scholar]
  18. LafondC.F. and LevanderA.1995. Migration of wide aperture onshore–offshore seismic data, central California: seismic images of late stage subduction. Journal of Geophysical Research100, 22231 – 22243.
    [Google Scholar]
  19. MallatS.1992. Multiresolution approximation and wavelets. Transactions of the American Mathematical Society315, 69 – 88.
    [Google Scholar]
  20. MallatS.1999. A Wavelet Tour of Signal Processing. Academic Press, Inc.
     [Google Scholar]
  21. MeyerY.1993. Wavelets Algorithms and Applications. Society for Industrial and Applied Mathematics.
     [Google Scholar]
  22. SchoenbergerM.1996. Optimum weighted stack for multiple suppression. Geophysics61, 891 – 901.
    [Google Scholar]
  23. Sea Land Group Crop Mare II
    Sea Land Group Crop Mare II1996. Wide Angle Reflection Sea‐Land CROP MARE II and LISA projects. In: Section Atlas (eds R.De Franco , G.Caielli and A.Corsi ), p. 69. CNR/IRRS, Milan.
     [Google Scholar]
  24. UlrychT.J., SacchiM.D. and GraulJ.M.1999. Signal and noise separation: Art and science. Geophysics64, 1648 – 1656.
    [Google Scholar]
  25. YilmazO.1987. Seismic Data Processing. Society of Exploration Geophysicists.
    [Google Scholar]
  26. ZeltC.H. and SmithR.B.1992. Seismic traveltime inversion for 2‐D, crustal velocity structure. Geophysical Journal International108, 16 – 34.
    [Google Scholar]
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Wavelet correlation filter for wide‐angle seismic data
Geophysical Prospecting 50, 547 (2002); https://doi.org/10.1046/j.1365-2478.2002.00337.x
/content/journals/10.1046/j.1365-2478.2002.00337.x
/content/journals/10.1046/j.1365-2478.2002.00337.x
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