Modeling of Interaction of Acoustic Waves With Ionosphere

Aramyan, A. R.; Galechyan, G. A.; Harutyunyan, G.; Mangasaryan, N.R.; Bilén, Sven G.; Soroka, S. A.

doi:10.1109/tps.2007.914189

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…We propose a new hydrodynamic analyticalnumerical model which includes the two-stage (consequent) transformation of SWs: (1) parametric transformations of two SW packets with frequencies ∼ 600 Hz and a modulation frequency ∼ 0.01 Hz to ISWs with the carrier difference frequency in the ELF range ∼ (10-100) Hz over a range of altitudes (0-0.5) km, and (2) the transformation of ISWs in the ELF range with the carrier frequency ∼ (10-100) Hz to AGWs in the ULF range with a frequency ∼ 0.01 Hz. This model is based on the parameters of the experiments with the PSG and corresponds to the experimental results qualitatively well (Parrot et al, 2007;Koshovyy, 1999;Kotsarenko et al, 1999;Soroka et al, 2006;Aramyan et al, 2008). We then discuss the physical consequences of these processes and the possibilities of their observations using satellites and ground-based instruments.…”

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confidence: 54%

“…The maximum experimental value of the amplitude of the input velocity is v 0 = 420 m s −1 for our setup (Aramyan et al, 2008). The initial width of the SW beam is ρ 01 = (1-10) m in the horizontal plane.…”

Section: The First Frequency Transformmentioning

confidence: 89%

“…This approach may help to investigate the acoustic signal effects in the ionosphere that should be released by the PSG (Soroka et al, 2006;Aramyan et al, 2008). In previous papers (Kotsarenko et al, 1999;Grimalsky et al, 2003;Koshevaya et al, 2005), the theory of the sound wave penetration produced by the two-frequency PSG has been proposed.…”

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confidence: 99%

“…Finally, the idea for a future active ground-satellite experiment involving electromagnetic and acoustics signals that are possibly connected with optical glows and effects in aerosol response (Aramyan et al, 2008) is formulated.…”

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confidence: 99%

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Ground-based acoustic parametric generator impact on the atmosphere and ionosphere in an active experiment

Rapoport¹,

Cheremnykh²,

Koshovy³

et al. 2017

Ann. Geophys.

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Abstract. We develop theoretical basics of active experiments with two beams of acoustic waves, radiated by a ground-based sound generator. These beams are transformed into atmospheric acoustic gravity waves (AGWs), which have parameters that enable them to penetrate to the altitudes of the ionospheric E and F regions where they influence the electron concentration of the ionosphere. Acoustic waves are generated by the ground-based parametric sound generator (PSG) at the two close frequencies. The main idea of the experiment is to design the output parameters of the PSG to build a cascade scheme of nonlinear wave frequency downshift transformations to provide the necessary conditions for their vertical propagation and to enable penetration to ionospheric altitudes. The PSG generates sound waves (SWs) with frequencies f 1 = 600 and f 2 = 625 Hz and large amplitudes (100-420 m s −1 ). Each of these waves is modulated with the frequency of 0.016 Hz. The novelty of the proposed analytical-numerical model is due to simultaneous accounting for nonlinearity, diffraction, losses, and dispersion and inclusion of the two-stage transformation (1) of the initial acoustic waves to the acoustic wave with the difference frequency f = f 2 − f 1 in the altitude ranges 0-0.1 km, in the strongly nonlinear regime, and (2) of the acoustic wave with the difference frequency to atmospheric acoustic gravity waves with the modulational frequency in the altitude ranges 0.1-20 km, which then reach the altitudes of the ionospheric E and F regions, in a practically linear regime. AGWs, nonlinearly transformed from the sound waves, launched by the two-frequency ground-based sound generator can increase the transparency of the ionosphere for the electromagnetic waves in HF (MHz) and VLF (kHz) ranges. The developed theoretical model can be used for interpreting an active experiment that includes the PSG impact on the atmosphere-ionosphere system, measurements of electromagnetic and acoustic fields, study of the variations in ionospheric transparency for the radio emissions from galactic radio sources, optical measurements, and the impact on atmospheric aerosols. The proposed approach can be useful for better understanding the mechanism of the acoustic channel of seismo-ionospheric coupling.

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confidence: 54%

Section: The First Frequency Transformmentioning

confidence: 89%

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confidence: 99%

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confidence: 99%

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