Low Ionosphere under Influence of Strong Solar Radiation: Diagnostics and Modeling
| Autor: | Ljubinko M. Ignjatović, Vladimir A. Srećković, Veljko Vujčić, D. Šulić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Daytime Electron density 010504 meteorology & atmospheric sciences QH301-705.5 QC1-999 solar radiation Radiation 01 natural sciences Physics::Geophysics Atmosphere 0103 physical sciences disturbances General Materials Science Biology (General) Very low frequency QD1-999 010303 astronomy & astrophysics Instrumentation 0105 earth and related environmental sciences Fluid Flow and Transfer Processes Physics sun activity Solar flare Process Chemistry and Technology General Engineering modeling Plasma Engineering (General). Civil engineering (General) Computer Science Applications Computational physics Chemistry observations Physics::Space Physics atmosphere TA1-2040 Ionosphere |
| Zdroj: | Applied Sciences Volume 11 Issue 16 Applied Sciences, Vol 11, Iss 7194, p 7194 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11167194 |
| Popis: | Solar flares (SFs) and intense radiation can generate additional ionization in the Earth’s atmosphere and affect its structure. These types of solar radiation and activity create sudden ionospheric disturbances (SIDs), affect electronic equipment on the ground along with signals from space, and potentially induce various natural disasters. Focus of this work is on the study of SIDs induced by X-ray SFs using very low frequency (VLF) radio signals in order to predict the impact of SFs on Earth and analyze ionosphere plasmas and its parameters. All data are recorded by VLF BEL stations and the model computation is used to obtain the daytime atmosphere parameters induced by this extreme radiation. The obtained ionospheric parameters are compared with results of other authors. For the first time we analyzed physics of the D-region—during consecutive huge SFs which continuously perturbed this layer for a few hours—in detail. We have developed an empirical model of the D-region plasma density and gave a simple approximative formula for electron density. |
| Databáze: | OpenAIRE |
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