A model for nonlinear seismic waves in a medium with instability (Q1312447)
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scientific article; zbMATH DE number 493510
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A model for nonlinear seismic waves in a medium with instability |
scientific article; zbMATH DE number 493510 |
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A model for nonlinear seismic waves in a medium with instability (English)
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9 February 1994
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The effects of stimulation of narrow- and broad-band seismic emission and the existence of dominant frequencies for which the medium is transparent have been reported. A model evolutionary equation which takes into account nonlinearity, instability, dissipation of energy and dispersion is proposed and solved numerically. The temporal evolution of chaotic signals rsults in the formation of quasi-sinusoidal steady-state wave trains. The dependence of their amplitude on the values of coefficients of nonlinearity and dispersion is found. The mathematical model proposed can be used to describe the observed seismic phenomena.
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Earth's crust
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nonlinear active medium
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existence of dominant frequencies
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evolutionary equation
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chaotic signals
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quasi-sinusoidal steady-state wave trains
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