1887
ASEG2001 - 15th Geophysical Conference
  • ISSN: 2202-0586
  • E-ISSN:

Abstract

Using synthetic seismograms, we study the influence of the widely observed strong scattered noises in complex near-surface areas. Our studies show that an intense scattering occurs in near surface regions, especially in the near-source and near-receiver regions. The scattering is dominated by rugged topography. These strong near-surface scatterings can seriously decrease the energy of valid signals and significantly increase noise levels that mask the interesting reflections. The study of simulating wave scattering by a low-velocity topographic structure in the western areas of China shows that the topographic effect is the most important factor to degrade the quality of seismic data in these areas.

© ASEG 2001
Loading

Article metrics loading...

/content/journals/10.1071/ASEG2001ab034
2001-12-01
2026-01-18

  • From This Site

    /content/journals/10.1071/ASEG2001ab034
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Berkhout, A. J., and Verschuur, D. J., 1997, Estimation of multiple scattering by iterative inversion, Part I: Theoretical considerations: Geophysics, 62, 1586-1595.
  2. Bevc, D., 1997, Flooding the topography: Wave-equation datuming of land data with rugged acquisition topography, Geophysics, 62, 1558-1569.
  3. Blonk, B., and Herman, G. C, 1994, Inverse scattering of surface waves: A new look at surface consistency: Geophysics, 59, 963-972.
  4. Foster, M. S., Price, S. J., Hill, G. S., Duque, C, Ellis, D., and Stephenson, R. W., 1998, A breakthrough in the quality of seismic data from the fold belt of Papua New Guinea: The Leading Edge, 611-620.
  5. Fu, L. Y., 1996, 3-D boundary element seismic modeling in complex geology: 66th Ann. Internal Mtg., Soc.Expl.Geophys., Expanded Abstracts, 1239-1242.
  6. Fu, L. Y., Mu, Y. G., and Yang, H. J., 1997, Forward problem of nonlinear Fredholm integral equation in reference medium via velocity-weighted wavefield function: Geophysics, 62, 650-656.
  7. Fu L. Y., Wu R. S., and Guan H., 1999, Removing rugged-topography scattering effects in surface seismic data: 69th Ann. Internal Mtg., Soc. Expl. Geophys., Expanded Abstracts, 839-842.
  8. Fu, L. Y., and Wu, R. S., 2000, Infinite boundary element absorbing boundary for wave propagation simulations: Geophysics, 65, 625-637.
  9. Fu L.Y., Wu R. S., and Campillo M., 2000, Energy partition and attenuation of regional phases by random free surface: under review by Bull. Seis. Soc. Am..
  10. Fu L.Y. and Wu R. S., 2001, A hybrid BE-GS method for modeling regional wave propagation: appear in Pure and Applied Geophysics.
  11. Guan H., Wu R. S., and Fu L. Y., 2000, Removing scattering effects of rugged topography using finite difference method: 70th Ann. Internal Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1140-1143.
  12. Mazzotti, A. P., Stucchi, E., Fradelizio, G. L., Zanzi, L., and Scandone, P., 2000, Seismic exploration in complex terrains: A processing experience in the Southern Apennines: Geophysics, 65, 1402-1417.
  13. Ronen, J., and Claerbout, J., 1985, Surface-consistent residual static estimation by stacking-power maximization: Geophysics, 50, 2759-2767.
  14. Selem, A. M., 1955, Reflection survey in rough topography: Geophys. Prosp., 03, 246-257.
  15. Wang, B., Cheng, S. W., Pann, K., and Deng, H. L., 1995, Estimating large statics by a simplified stacking power approach using local optimization: 67th Ann. Internal Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1066-1069.
  16. Weglein, A. B., Gasparotto, F. A., Carvalho, P. M., and Stolt R. H., 1997, An inverse-scattering series method for attenuating multiples in seismic reflection data: Geophysics, 62, 1975-1989.
  17. Widess, M. B., 1946, Effect of surface topography on seismic mapping: Geophysics, 11, 362-372.
  18. Wu, R. S., 1996, Synthetic seismogram in heterogeneous media by one-return approximation: Pure and Applied Geophys., 148, 155-173.
  19. Wu, R. S., and Fu, L. Y., 1998, A hybrid method for wave propagation simulation in near-surface regions: 68th Ann. Internal Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1065-1068.
/content/journals/10.1071/ASEG2001ab034
Loading
  • Article Type: Research Article
Keyword(s): near surface; rugged topography; scattered noises; topographic scattering

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error