It is the trace interval that determines the spatial frequency property of one shot gather. As the trace interval increases, spatial aliasing emerges and data quality deteoriates. Aliased surface waves in the dispersion energy map have false higher-mode dispersion curves, or low velocity noise, and have missing or pronged dispersion energy trends at certain frequency ranges. Qualitatively, large spacing causes a severe aliasing that smears the dispersion plot, yielding it unusable. As long as spatial aliasing is not dominant, the surface waves can be used to invert the corresponding subsurface structure. We present a synthetic example to test the effectiveness of the high resolution linear Radon transform (HRLRT) and the least squares Radon transform (LSRT), which are used to calculate dispersion curves. Since the HRLRT typically affords a better low frequency response, we use it to map the field example. Effects caused by different spatial intervals in dispersion maps of synthetic and field examples are also shown. A genetic algorithm is used in the inversion to determine the subsurface structure, and these results are then compared with a nearby borehole test. The agreement between the test and the model shows the promising prospect of the surface wave methods.


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  1. Gong, T., Liu, M., Zhang, H., Li, X., Chen, H., Liu, J., Liu, R. and Ye, Y.
    [2013] Near-surface structure estimation using Rayleigh wave and a genetic algorithm. First Near Surface Geophysics Asia Pacific Conference, Beijing, July, Expanded Abstracts.
    [Google Scholar]
  2. Luo, Y., Xia, J., Miller, R. D., Xu, Y., Liu, J. and Liu, Q.
    [2008] Rayleigh-wave dispersive energy imaging by high resolution linear Radon transform. Pure and Applied Geophysics, 165(5), 903–922.
    [Google Scholar]
  3. Miller, R.D., Xia, J., Park, C.B. and Ivanov, J.
    [1999] Multichannel analysis of surface waves to map bedrock. The Leading Edge, 18, 1392–1396.
    [Google Scholar]
  4. Park, C.B., Miller, R.D. and Xia, J.
    [1999] Multi-channel analysis of surface waves (MASW). Geophysics, 64, 800–808.
    [Google Scholar]
  5. [2001] Offset and resolution of dispersion curve in multichannel analysis of surface waves (MASW). Proceedings of SAGEEP, Expanded Abstracts.
    [Google Scholar]
  6. Park, C.B., Miller, R.D., Xia, J., Ivanov, J., Sonnichsen, G.V., Hunter, J.A., Good, R L., Burns, R.A. and Christian, H.
    [2005] Underwater MASW to evaluate stiffness of water-bottom sediments. The Leading Edge, July, 724–728.
    [Google Scholar]
  7. Pezeshk, S. and Zarrabi, M.
    [2005] A new inversion procedure for spectral analysis of surface waves using a genetic algorithm. Bulletin of the Seismological Society of America, 95(5), 1801–1808.
    [Google Scholar]
  8. Socco, L.V., Foti, S. and Boiero, D.
    [2010] Surface-wave analysis for building near-surface velocity models-established approaches and new perspectives. Geophysics, 75(5), 75A83–75A102.
    [Google Scholar]
  9. Spitz, S.
    [1991] Seismic trace interpolation in the F-X domain. Geophysics, 56(6), 785–794.
    [Google Scholar]
  10. Xia, J., Miller, R.D. and Park, C.B.
    [1999a] Estimation of near-surface shear-wave velocity by inversion of Rayleigh wave. Geophysics, 64, 691–700.
    [Google Scholar]
  11. Xia, J., Miller, R.D., Park, C.B., Hunter, J.A. and Harris, J.B.
    [1999b] Evaluation of the MASW technique in unconsolidated sediments. 69th Annual International Meeting, SEG, Expanded Abstracts, 437–440.
    [Google Scholar]
  12. Xia, J., Miller, R.D. and Park, C.B.
    [2000] Advantages of calculating shear-wave velocity from surface waves with higher modes. 70th Annual International Meeting, SEG, Expanded Abstracts, 1295–1298.
    [Google Scholar]

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