Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings

Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings

An analysis of four solar flare X-ray irradiance effects on VLF signal amplitude and phase delay variations on the NAA/24.0 kHz signal trace during the period from 2005 September to 2006 December was carried out. Solar flare data were taken from the GOES12 satellite one-minute listings. For the VLF...

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Bibliographic Details
Main Authors: Kolarski Aleksandra, Grubor Davorka, Šulić Desanka
Format: Article
Language:English
Published: De Gruyter 2011-12-01
Series:Open Astronomy
Subjects:
solar flares
vlf signal perturbation
earth ionosphere waveguide
Online Access:https://doi.org/10.1515/astro-2017-0342
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spelling doaj-c49be7e009474bf7bdb24e1d1d2a7ba22021-09-06T19:40:13ZengDe GruyterOpen Astronomy2543-63762011-12-0120459159510.1515/astro-2017-0342astro-2017-0342Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal RecordingsKolarski Aleksandra0Grubor Davorka1Šulić Desanka2Institute for Geophysics, Batajćniki drum 8, 11000 Belgrade, SerbiaFaculty of Mining and Geology, Physics Cathedra, University of Belgrade, Djušna 1, 11000 Belgrade, SerbiaFaculty of Ecology and Environmental Protection, Union – Nikola Tesla University, Belgrade, Cara Dušana 62-64, 11000 Belgrade, SerbiaAn analysis of four solar flare X-ray irradiance effects on VLF signal amplitude and phase delay variations on the NAA/24.0 kHz signal trace during the period from 2005 September to 2006 December was carried out. Solar flare data were taken from the GOES12 satellite one-minute listings. For the VLF data, recordings at the Institute of Physics, Belgrade were used. It was found that solar flare events affect VLF wave propagation in the Earth-ionosphere waveguide lowering the changes of the ionosphere electron density height profiles. This follows from the variation during the solar flare events of the following propagation parameters: the sharpness of the lower edge of the ionosphere and the reflection height.https://doi.org/10.1515/astro-2017-0342solar flaresvlf signal perturbationearth ionosphere waveguide
collection DOAJ
language English
format Article
sources DOAJ
author Kolarski Aleksandra
Grubor Davorka
Šulić Desanka
spellingShingle Kolarski Aleksandra
Grubor Davorka
Šulić Desanka
Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
Open Astronomy
solar flares
vlf signal perturbation
earth ionosphere waveguide
author_facet Kolarski Aleksandra
Grubor Davorka
Šulić Desanka
author_sort Kolarski Aleksandra
title Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
title_short Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
title_full Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
title_fullStr Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
title_full_unstemmed Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings
title_sort diagnostics of the solar x-flare impact on lower ionosphere through the vlf-naa signal recordings
publisher De Gruyter
series Open Astronomy
issn 2543-6376
publishDate 2011-12-01
description An analysis of four solar flare X-ray irradiance effects on VLF signal amplitude and phase delay variations on the NAA/24.0 kHz signal trace during the period from 2005 September to 2006 December was carried out. Solar flare data were taken from the GOES12 satellite one-minute listings. For the VLF data, recordings at the Institute of Physics, Belgrade were used. It was found that solar flare events affect VLF wave propagation in the Earth-ionosphere waveguide lowering the changes of the ionosphere electron density height profiles. This follows from the variation during the solar flare events of the following propagation parameters: the sharpness of the lower edge of the ionosphere and the reflection height.
topic solar flares
vlf signal perturbation
earth ionosphere waveguide
url https://doi.org/10.1515/astro-2017-0342
work_keys_str_mv AT kolarskialeksandra diagnosticsofthesolarxflareimpactonlowerionospherethroughthevlfnaasignalrecordings
AT grubordavorka diagnosticsofthesolarxflareimpactonlowerionospherethroughthevlfnaasignalrecordings
AT sulicdesanka diagnosticsofthesolarxflareimpactonlowerionospherethroughthevlfnaasignalrecordings
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