1887

Abstract

Summary

Diffractions caused by faults, fractures, and small-scale heterogeneity localized near the surface are often used in ground-penetrating radar (GPR) reflection studies to constrain the sub-surface velocity distribution. Interference with reflected energy makes the identification of diffractions difficult. To improve identification of diffractions and improve velocity estimation, we apply diffraction imaging techniques developed for seismic data processing to our surface-based reflection GPR data. We demonstrate and discuss the improved GPR velocity estimation produced by the diffraction imaging approach, and how it may result in higher resolution GPR images of small-scale faults and fractures after migration.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800950
2018-06-11
2021-11-29
Loading full text...

Full text loading...

References

  1. Fomel, S.
    [2002] Application of plane-wave destruction filters. Geophysics, 67(6), 1946–1960.
    [Google Scholar]
  2. Fomel, S., Landa, E., Taner, M.T.
    [2007] Poststack velocity analysis by spearation and imaging of seismic diffractions. Geophysics, 72, U89–U94.
    [Google Scholar]
  3. Grasmueck, M.P.
    [1996] 3-D ground-penetrating radar applied to fraction imaging in gneiss. Geophysics, 61, 1050–1064.
    [Google Scholar]
  4. Gravesen, P., Nilsson, B., Rasmussen, P., and Pedersen, S.A.S.
    [2014] Borehole logs from the Precambrian basement on Bornholm, eastern Denmark: geology and ground water flow. Geological Survey of Denmark and Greenland Bulletin, 31, 15–18.
    [Google Scholar]
  5. Keskinen, J., Klotzsche, A., Looms, M.C., Moreau, J., Kruk, J. V., Holliger, K., Stemmerik, L., and Nilsen, L.
    [2017] Full-waveform inversion of crosshole GPR data: implications for porosity estimation in chalk. Journal of Applied Geophysics, 140, 102–116.
    [Google Scholar]
  6. Landa, E., and Keydar, S.
    [1998] Seismic monitoring of diffraction images for detection of local heterogeneities. Geophysics, 63, 1093–1100.
    [Google Scholar]
  7. Liner, C.L., and Liner, J.L.
    [1995] Ground-penetrating radar: A near-surface experience from Washington Country, Arkansas. The Leading Edge, 14, 17–21.
    [Google Scholar]
  8. Nielsen, L., Looms, M.C., Hansen, TM, Cordua, K.S., and Stemmerik, L.
    [2010] Estimation of chalk heterogeneity from stochastic modeling conditioned by crosshole GPR traveltimes and log data. Advances in Near-surface Seismology and Ground-penetrating Radar. Geophysical Development Series, SEG, 379–396.
    [Google Scholar]
  9. Nuzzo, L., Leucci, G., and Negri, S.
    [2007] GPR, VES and refraction seismic surveys in the karstic area “Spedicaturo” near Nociglia (Lecce, Italy). Near Surface Geophysics, 5, 67–76.
    [Google Scholar]
  10. Rashed, M., Kawamura, D., Nemoto, H., Miyata, T., and Nakagawa, K.
    [2003] Ground penetrating radar investigation across the Uemachi fault, Osaka, Japan. Journal of Applied Geophysics, 53, 63–75.
    [Google Scholar]
  11. Sava, P.C., Biondi, B., and Etgen, J.
    [2005] Wave-equation migration velocity analysis by focusing diffractions and reflections. Geophysics, 70, U19–U27.
    [Google Scholar]
  12. Theume, U., Rokosh, D., Sacchi, M.D., and Schmitt, D.R.
    [2006] Mapping fractrues with GPR: A case study from Turtle Mountain. Geophysics, 71, B139–B150.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800950
Loading
/content/papers/10.3997/2214-4609.201800950
Loading

Data & Media loading...

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