Diurnal variations in the spectrum of lower-ionosphere plasma irregularities |
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Authors: | Yu. V. Kyz’yurov |
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Affiliation: | (1) Main Astronomical Observatory, National Academy of Sciences of Ukraine, vul. Akademika Zabolotnoho 27, Kyiv, 03680, Ukraine |
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Abstract: | We examined the variations caused in the spectrum of lower-ionosphere plasma irregularities by diurnal changes of ionospheric parameters. We demonstrate that at a height of 95 km, where the irregularities arise due to the turbulence of the neutral atmosphere, the expected level of plasma irregularity fluctuations at a constant turbulent mixing intensity is smaller in the daytime than at night. The one-dimensional spectrum which can be measured in experiments also changes, namely, the spectrum slope is greater at night. |
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