1887

Abstract

Summary

The paper considers a new method for determining the profiles of pressure and shear velocities based on the analysis of seismic noise. It is proposed to analyze two cross spectra of signals from mutually spaced receivers. The paper considers a new method for determining the profiles of pressure and shear velocities based on the analysis of seismic noise. It is proposed to analyze two cross spectra of signals from mutually spaced receivers. The first corresponds to the correlation between vertical projections of the surface displacement vector, the second - between its vertical and horizontal projections. Based on the phase variation with frequency one can judge on the Rayleigh wave dispersion and based on the spectra ratio – on the ellipticity. The latter makes it possible to reconstruct pressure and shear velocity profiles. Processing results of field measurements and their comparison with the data obtained via active source are demonstrated.

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/content/papers/10.3997/2214-4609.201902522
2019-09-08
2020-08-09
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References

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