Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events
The impact of 14 geomagnetic storms from a list of CEDAR, GEM and ISTP storms, that occurred during 1997–1999, on radio propagation conditions has been investigated. The propagation conditions were estimated through variations of the MOF and LOF (the maximum and lowest operation frequencies) on thre...
Published in: | Annales Geophysicae |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2008
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031395 2023-05-15T17:40:33+02:00 Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events Blagoveshchensky, D. V. Kalishin, A. S. Sergeyeva, M. A. 2008-06 electronic https://doi.org/10.5194/angeo-26-1479-2008 https://noa.gwlb.de/receive/cop_mods_00031395 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031349/angeo-26-1479-2008.pdf https://angeo.copernicus.org/articles/26/1479/2008/angeo-26-1479-2008.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-26-1479-2008 https://noa.gwlb.de/receive/cop_mods_00031395 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031349/angeo-26-1479-2008.pdf https://angeo.copernicus.org/articles/26/1479/2008/angeo-26-1479-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/angeo-26-1479-2008 2022-02-08T22:46:46Z The impact of 14 geomagnetic storms from a list of CEDAR, GEM and ISTP storms, that occurred during 1997–1999, on radio propagation conditions has been investigated. The propagation conditions were estimated through variations of the MOF and LOF (the maximum and lowest operation frequencies) on three high-latitude HF radio paths in north-west Russia. Geophysical data of Dst, Bz, AE as well as some riometer data from Sodankyla observatory, Finland, were used for the analysis. It was shown that the storm impact on the ionosphere and radio propagation for each storm has an individual character. Nevertheless, there are common patterns in variation of the propagation parameters for all storms. Thus, the frequency range Δ=MOF−LOF increases several hours before a storm, then it narrows sharply during the storm, and expands again several hours after the end of the storm. This regular behaviour should be useful for the HF radio propagation predictions and frequency management at high latitudes. On the trans-auroral radio path, the time interval when the signal is lost through a storm (tdes) depends on the local time. For the day-time storms an average value tdes is 6 h, but for night storms tdes is only 2 h. The ionization increase in the F2 layer before storm onset is 3.5 h during the day-time and 2.4 h at night. Mechanisms to explain the observed variations are discussed including some novel possibilities involving energy input through the cusp. Article in Journal/Newspaper North-West Russia Niedersächsisches Online-Archiv NOA Annales Geophysicae 26 6 1479 1490 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Blagoveshchensky, D. V. Kalishin, A. S. Sergeyeva, M. A. Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
topic_facet |
article Verlagsveröffentlichung |
description |
The impact of 14 geomagnetic storms from a list of CEDAR, GEM and ISTP storms, that occurred during 1997–1999, on radio propagation conditions has been investigated. The propagation conditions were estimated through variations of the MOF and LOF (the maximum and lowest operation frequencies) on three high-latitude HF radio paths in north-west Russia. Geophysical data of Dst, Bz, AE as well as some riometer data from Sodankyla observatory, Finland, were used for the analysis. It was shown that the storm impact on the ionosphere and radio propagation for each storm has an individual character. Nevertheless, there are common patterns in variation of the propagation parameters for all storms. Thus, the frequency range Δ=MOF−LOF increases several hours before a storm, then it narrows sharply during the storm, and expands again several hours after the end of the storm. This regular behaviour should be useful for the HF radio propagation predictions and frequency management at high latitudes. On the trans-auroral radio path, the time interval when the signal is lost through a storm (tdes) depends on the local time. For the day-time storms an average value tdes is 6 h, but for night storms tdes is only 2 h. The ionization increase in the F2 layer before storm onset is 3.5 h during the day-time and 2.4 h at night. Mechanisms to explain the observed variations are discussed including some novel possibilities involving energy input through the cusp. |
format |
Article in Journal/Newspaper |
author |
Blagoveshchensky, D. V. Kalishin, A. S. Sergeyeva, M. A. |
author_facet |
Blagoveshchensky, D. V. Kalishin, A. S. Sergeyeva, M. A. |
author_sort |
Blagoveshchensky, D. V. |
title |
Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
title_short |
Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
title_full |
Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
title_fullStr |
Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
title_full_unstemmed |
Space weather effects on radio propagation: study of the CEDAR, GEM and ISTP storm events |
title_sort |
space weather effects on radio propagation: study of the cedar, gem and istp storm events |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/angeo-26-1479-2008 https://noa.gwlb.de/receive/cop_mods_00031395 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031349/angeo-26-1479-2008.pdf https://angeo.copernicus.org/articles/26/1479/2008/angeo-26-1479-2008.pdf |
genre |
North-West Russia |
genre_facet |
North-West Russia |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-26-1479-2008 https://noa.gwlb.de/receive/cop_mods_00031395 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031349/angeo-26-1479-2008.pdf https://angeo.copernicus.org/articles/26/1479/2008/angeo-26-1479-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-26-1479-2008 |
container_title |
Annales Geophysicae |
container_volume |
26 |
container_issue |
6 |
container_start_page |
1479 |
op_container_end_page |
1490 |
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1766141510518046720 |