1887

Abstract

Summary

Small scale seismic measurements in laboratory to simulate field data introduces an intermediate step between numerical approaches and field data processing. The MUSC measurement bench is able to produce realistic 2D data with a source line modelled by a set of point sources. This ability to generate 2D data is particularly important because many numerical seismic modeling tools and almost all seismic Full Waveform Inversion tools are 2D and not 3D. A 2D experimental data set on an aluminium small-scale model is used in this work. The generation of the seismic signal in an aluminium block prevents the use of the point source in MUSC adapted to the impedance of epoxy-resins. Therefore, we need to use piezoelectric sources with a larger contact surface, thus away from the point source approximation. Actually, instead of a simple estimation of the source time function effectively emitted by the sensor due to ringing and coupling effects, we need to assess the impact of the spatial emitted pattern on the data. In this work, we present some comparisons on experimental and numerical data and results from particle swarm optimization used to determine the piezoelectric source radiation pattern.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201902505
2019-09-08
2020-09-26
Loading full text...

Full text loading...

References

  1. Bretaudeau, F., Leparoux, D., Durand, O. and Abraham, O.
    [2011] Small-scale modeling of onshore seismic experiment: A tool to validate numerical modeling and seismic imaging methods.Geophysics, 76(5)
    [Google Scholar]
  2. Capdeville, Y., Guillot, L. and Marigo, J.J.
    [2010] 2-D non-periodic homogenization to upscale elastic media for P-SV waves.Geophysical Journal International, 182(2), P903–922
    [Google Scholar]
  3. Erberhart, R. and Kennedy, J.
    [1995] A new optimizer using particle swarm theory.Micro Machine and Humane Science, Proceeding of the Sixth International Symposium on.
    [Google Scholar]
  4. Komatitsch, D. and Tromp, J.
    [1999] Introduction to the spectral element method for three-dimensional seismic wave propagation.Geophysical Journal International, 139(3), P806–822
    [Google Scholar]
  5. Pageot, D., Leparoux, D., Le Feuvre, M., Durand, O., Côte, P. and Capdeville, Y.
    [2017] Improving the seismic small-scale modelling by comparison with numerical methods.Geophysical Journal International, 211(1), P637–649
    [Google Scholar]
  6. Pratt, R.G.
    [1999] Seismic waveform inversion in the frequency domain, Part 1: Theory and verification in a physical scale model.Geophysics, 64(3), P888–901
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201902505
Loading
/content/papers/10.3997/2214-4609.201902505
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