1887

Abstract

Summary

Multicomponent seismic data allow the study of shear (S) waves, which is of great interest to characterize, for example, anisotropy. We present a 9C seismic data analysis workflow that involves the acquisition of multicomponent seismic data using a sledgehammer striking a prismatic wedge as vectorial seismic source and 3C receivers. Inclined impacts on the two opposing sides of the wedge are rotated into a vertically-and horizontally-directed source. Advantages of this source are the simultaneous recording of horizontally-and vertically-directed sources with uniform coupling. Re-orienting the wedge allows acquiring data with orthogonally-oriented horizontally-directed sources. A 4C rotation of the two source and two receiver horizontal components allows then determining, for example, the apparent arrival direction of two orthogonally-polarized direct S-waves, which may differ from the source-receiver direction. While applied here to find the arrival direction of the direct S-wave, our workflow can also be used to study anisotropy through analysis of S-wave splitting.

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/content/papers/10.3997/2214-4609.201601639
2016-05-31
2020-07-12
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References

  1. Alford, R. M.
    [1986] Shear data in the presence of azimuthal anisotropy. 56th Annual International Meeting, SEG, Expanded Abstracts, 476–479.
    [Google Scholar]
  2. Hardage, B. A., DeAngelo, M. V., Murray, P. E., and Sava, D.
    [2011] Multicomponent seismic technology. Society of Exploration Geophysicists.
    [Google Scholar]
  3. Harris, J. B.
    [1996] Shear-wave splitting in Quaternary sediments: Neotectonic implications in the central New Madrid seismic zone. Geophysics, 61, 1871–1882.
    [Google Scholar]
  4. Nuttli, O.
    [1961] The effect of the Earth’s surface on the S-wave particle motion. Bulletin of the Seismological Society of America, 51, 237–246.
    [Google Scholar]
  5. Schmelzbach, C., Reiser, F., Sollberger, D., Rabenstein, L., Horstmeyer, H., Sutter, E., Maurer, H., Robertsson, J., Greenhalgh, G.
    [2015] Multi-method geophysical imaging of a Quaternary valley in northern Switzerland. SEG Technical Program Expanded Abstracts, 2083–2087.
    [Google Scholar]
  6. Sollberger, D., Schmelzbach, C., Horstmeyer, H., Reiser, F., Rabenstein, L., Maurer, H., RobertssonJ., and Greenhalgh, S. G.
    [2014] Mapping near surface-elastic parameters of Quaternary sediments using multicomponent seismic techniques. EGU General Assembly, 16, EGU2014–4014.
    [Google Scholar]
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