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The origin of low-frequency maxima in the spectra of seismic noise

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Abstract

The evidence attesting to the possibility of the largest spectral maximum in seismic noise with a peak frequency of 0.14–0.22 Hz to form as a result of low-frequency dissipation of elastic wave energy in rocks is presented. According to this mechanism, elastic wave energy in rock, which can be considered as a two-component medium (solid matrix + pore water), is dissipated in the form of low-frequency pulses whose energy is the lower the smaller the coefficient of porosity. It is assumed that weak seismic events continuously occur in the frequency range above 6 Hz, and their dissipated energy is a source of the low-frequency noise.

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Authors and Affiliations

  1. Institute of Mining, Ural Branch, Russian Academy of Sciences, Perm, Russia

    V. K. Sidorov & M. V. Tarantin

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  1. V. K. Sidorov
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  2. M. V. Tarantin
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Original Russian Text © V.K. Sidorov, M.V. Tarantin, 2013, published in Fizika Zemli, 2013, No. 1, pp. 63–66.

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Sidorov, V.K., Tarantin, M.V. The origin of low-frequency maxima in the spectra of seismic noise. Izv., Phys. Solid Earth 49, 59–62 (2013). https://doi.org/10.1134/S106935131301014X

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  • DOI: https://doi.org/10.1134/S106935131301014X

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