Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe
In this study, we documented the midlatitude F2-layer response to five strong geomagnetic storms with minimum Dst < –150 nT that occurred in solar minimum years using hourly values of the F2-layer critical frequency (foF2) from four ionosondes located in different hemispheres. The results were...
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doaj-8fd4738d6c0f444098891aa50605235b2020-11-25T00:27:39ZengKorean Space Science Society (KSSS)Journal of Astronomy and Space Sciences2093-55872093-14092015-12-0132429730410.5140/JASS.2015.32.4.297Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the GlobeVitaly P. Kim0Valery V. Hegai1Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences, Moscow 142190, RussiaPushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences, Moscow 142190, RussiaIn this study, we documented the midlatitude F2-layer response to five strong geomagnetic storms with minimum Dst < –150 nT that occurred in solar minimum years using hourly values of the F2-layer critical frequency (foF2) from four ionosondes located in different hemispheres. The results were very limited, but they illustrated some peculiarities in the behavior of the F2-layer storm. During equinox, the characteristic ionospheric disturbance patterns over the Japanese station Wakkanai in the Northern Hemisphere and the Australian station Mundaring in the Southern Hemisphere were consistent with the well-known scenario by Prölss (1993); however, during a December solstice magnetic storm, both stations did not observe any noticeable positive ionospheric disturbances. Over the “near-pole” European ionosonde, clear positive ionospheric storms were not observed during the events, but the “far-from-pole” Southern Hemisphere station Port Stanley showed prominent enhancements in F2-layer peak electron density in all magnetic storms except one. No event produced noticeable nighttime enhancements in foF2 over all four ionosondes.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2015/v32n4/OJOOBS_2015_v32n4_297.pdfmidlatitude ionosphereionospheric disturbancesolar minimum |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vitaly P. Kim Valery V. Hegai |
spellingShingle |
Vitaly P. Kim Valery V. Hegai Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe Journal of Astronomy and Space Sciences midlatitude ionosphere ionospheric disturbance solar minimum |
author_facet |
Vitaly P. Kim Valery V. Hegai |
author_sort |
Vitaly P. Kim |
title |
Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe |
title_short |
Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe |
title_full |
Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe |
title_fullStr |
Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe |
title_full_unstemmed |
Response of the Midlatitude F2 Layer to Some Strong Geomagnetic Storms during Solar Minimum as Observed at Four Sites of the Globe |
title_sort |
response of the midlatitude f2 layer to some strong geomagnetic storms during solar minimum as observed at four sites of the globe |
publisher |
Korean Space Science Society (KSSS) |
series |
Journal of Astronomy and Space Sciences |
issn |
2093-5587 2093-1409 |
publishDate |
2015-12-01 |
description |
In this study, we documented the midlatitude F2-layer response to five strong geomagnetic storms with minimum Dst
< –150 nT that occurred in solar minimum years using hourly values of the F2-layer critical frequency (foF2) from four
ionosondes located in different hemispheres. The results were very limited, but they illustrated some peculiarities in the
behavior of the F2-layer storm. During equinox, the characteristic ionospheric disturbance patterns over the Japanese
station Wakkanai in the Northern Hemisphere and the Australian station Mundaring in the Southern Hemisphere were
consistent with the well-known scenario by Prölss (1993); however, during a December solstice magnetic storm, both
stations did not observe any noticeable positive ionospheric disturbances. Over the “near-pole” European ionosonde, clear
positive ionospheric storms were not observed during the events, but the “far-from-pole” Southern Hemisphere station Port
Stanley showed prominent enhancements in F2-layer peak electron density in all magnetic storms except one. No event
produced noticeable nighttime enhancements in foF2 over all four ionosondes. |
topic |
midlatitude ionosphere ionospheric disturbance solar minimum |
url |
http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2015/v32n4/OJOOBS_2015_v32n4_297.pdf |
work_keys_str_mv |
AT vitalypkim responseofthemidlatitudef2layertosomestronggeomagneticstormsduringsolarminimumasobservedatfoursitesoftheglobe AT valeryvhegai responseofthemidlatitudef2layertosomestronggeomagneticstormsduringsolarminimumasobservedatfoursitesoftheglobe |
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