Abstract
This model concerns the analysis of Aurora initiated travelling pressure waves in an isothermal atmosphere. Electro-dynamic Lorentz Force associated with auroral electric current density during the periods of geomagnetic activity is invoked as a possible exciting source.
The dispersion phenomena in auroral induced acoustic gravity modes in the earth's atmosphere are examined and various cut-off frequencies analysed.
Finally, an attempt is made to obtain a far field representation of the forced oscillations by means of Green's Function technique. Therefrom, the spectral amplitudes of the ground-level oscillations are computed. Incorporating various scaling factors, it is deduced that these amplitude components are in reasonable agreement with the results of recent measurements.
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Okeke, E.O. A spectrum of the acoustic-gravity waves associated with Auroral electro-jet. PAGEOPH 115, 593–606 (1977). https://doi.org/10.1007/BF00876124
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DOI: https://doi.org/10.1007/BF00876124