1887

Abstract

Summary

In the aim to contribute to identify the capacity of Rayleigh waves for underground cavities detection, we propose a combined approach based on numerical and experimental data obtained in a reduced-scale laboratory. We propose to calculate the H/V ratio of the wave field in presence of a void. First, the study is conducted on a homogeneous model. It shows that the positions of H/V anomalies depend on the cavity depth and are invariant with the diameter of the cavity. The results are then confirmed in an experimental bi-layer model. Thus, the H/V ratio seems to be a robust observable for cavity detection.

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/content/papers/10.3997/2214-4609.201801009
2018-06-11
2020-03-28
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References

  1. Filippi, C., Leparoux, D., Grandjean, G., Bitri, A. and Côte, P.
    [2017] Numerical and experimental analysis of the effects of cavities on the Rayleigh seismic waves in the frequency domain. 79th EAGE Conference and ExhibitionParis2017.
    [Google Scholar]
  2. Shtivelman, V.
    [2002] Using surface waves for studying the shallow subsurface. Bollettino di geofisica Teorica ed Applicata, 44, 223–236.
    [Google Scholar]
  3. Valensi, R., Leparoux, D., Durand, O., Bretaudeau, F. and Côte, P.
    [2015] Multicomponent reduced scale seismic modelling: upgrade of the MUSC laboratory with application to polarization observations. Geophysical Journal International, 202, 1993–2004.
    [Google Scholar]
  4. Xia, J., Nyquist, J.E., Xu, Y., Roth, J. and Miller, R.
    [2007] Feasibility of detecting near-surface feature with Rayleigh wave diffraction. Journal of applied geophysics. Journal of Applied Geophysics, 32, 244–253.
    [Google Scholar]
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