1887

Abstract

Summary

In exploration seismology, surface waves generated by active sources usually mask events of interest like reflections and diffractions. This is exacerbated in high-noise, near-mine environments where the targets have often low-impedance contrasts. We present a purely data-driven approach for surface-waves attenuation in active-source reflection seismic data acquired at the Ludvika mining area of central Sweden in 2016. We apply seismic interferometry to the data in order to retrieve dominant surface waves between receivers. We then subtract them from the original data in an adaptive way for their attenuation. Our results show that the surface waves are well suppressed and the target mineralization signature is boosted allowing new features to be revealed. After a simple pre-stack processing, we obtain cleaner seismic sections with more continuous reflections.

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/content/papers/10.3997/2214-4609.201902494
2019-09-08
2020-02-20
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References

  1. Dong, S., He, R., and Schuster, G.
    [2006]. Interferometric prediction and least squares subtraction of surface waves. 76th Annual International Meeting, SEG, Expanded Abstracts, 2783–2786.
    [Google Scholar]
  2. Halliday, D.F., Curtis, A., Vermeer, P., Strobbia, C., Glushchenko, A., Van Manen, D.-J. and Robertsson, J.O.
    [2010]. Interferometric ground-roll removal: Attenuation of scattered surface waves in single-sensor data. Geophysics, 75 (2), SA15–SA25.
    [Google Scholar]
  3. Konstantaki, L., Draganov, D., Ghose, R. and Heimovaara, T.
    [2015]. Seismic interferometry as a tool for improved imaging of the heterogeneities in the body of a landfill. Journal of Applied Geophysics, 122, 28–39.
    [Google Scholar]
  4. Malehmir, A., Maries, G., Bäckström, E., Schön, M., and Marsden, P.
    [2017]. Developing cost-effective seismic mineral exploration methods using a landstreamer and a drophammer. Scientific Reports, 7, 10325.
    [Google Scholar]
  5. Maries, G., Malehmir, A., Bäckström, E., Schön, M. and Marsden, P.
    [2017a]. Downhole physical property logging for iron-oxide exploration, rock quality, and mining: An example from central Sweden. Ore Geology Reviews, 90, 1–13.
    [Google Scholar]
  6. Maries, G., Malehmir, A., Backström, E., Schön, M. and Marsden, P.
    [2017b]. Reflection Seismic Imaging of Iron-oxide Deposits - An Example from Bergslagen Mining District of Sweden. 23rd European Meeting of Environmental and Engineering Geophysics, Malmö, Sweden, September 2017.
    [Google Scholar]
  7. Snieder, R.
    [2004]. Extracting the Green’s function from the correlation of coda waves: a derivation based on stationary phase. Physical Review, E 69, 46610.
    [Google Scholar]
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