Abstract
Nonlinear effects manifested in infrasonic signals passing through different atmospheric heights and recorded in the region of a geometric shadow have been studied. The source of infrasound was a surface explosion equivalent to 20–70 t of TNT. The frequencies of the spectral maxima of infrasonic signals, which correspond to the reflections of acoustic pulses from atmospheric inhomogeneities at different heights within the stratosphere-mesosphere-lower thermosphere layer, were calculated using the nonlinear-theory method. A satisfactory agreement between experimental and calculated data was obtained.
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Original Russian Text © S.N. Kulichkov, E.V. Golikova, 2013, published in Izvestiya AN. Fizika Atmosfery i Okeana, 2013, Vol. 49, No. 1, pp. 85–90.
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Kulichkov, S.N., Golikova, E.V. Nonlinear effects manifested in infrasonic signals in the region of a geometric shadow. Izv. Atmos. Ocean. Phys. 49, 77–81 (2013). https://doi.org/10.1134/S0001433813010052
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DOI: https://doi.org/10.1134/S0001433813010052