Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations

Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations

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Ground-based ionosonde and magnetic-field observations on the equatorial station Huancayo, ESRO4 neutral-composition measurements, and theoretical model calculations were used to analyze disturbed <strong>E</strong>×<strong>B</strong> vertical plasma drift during the phase...

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Main Authors: A. V. Mikhailov, M. Förster, T. Y. Leschinskaya
Format: Article
Language:English
Published: Copernicus Publications 1996-07-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/14/733/1996/angeo-14-733-1996.pdf
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spelling doaj-55cd349164ca4ff7acc2d25efdeec83b2020-11-24T22:35:57ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761996-07-011473374310.1007/s00585-996-0733-zDisturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variationsA. V. MikhailovM. FörsterT. Y. LeschinskayaGround-based ionosonde and magnetic-field observations on the equatorial station Huancayo, ESRO4 neutral-composition measurements, and theoretical model calculations were used to analyze disturbed <strong>E</strong>×<strong>B</strong> vertical plasma drift during the phase of solar minimum in 1973. Vertical drifts calculated for disturbed days do not show the systematic decrease often mentioned in publications, and demonstrate strong dependence on IMF-<i>B<sub>z</sub></i> changes. It is confirmed with the help of our drift calculations that <i>B<sub>z</sub></i> turnings to a northward direction result in a decrease (up to reversal) of normal Sq (eastward during daytime and westward at nighttime) in the zonal component of electric field. Southward <i>B<sub>z</sub></i> excursions enhance normal <i>E<sub>y</sub></i> both in daytime and nighttime hours. Model predictions of <i>E<sub>y</sub></i>\'s reaction to IMF-<i>B<sub>z</sub></i> changes are discussed.https://www.ann-geophys.net/14/733/1996/angeo-14-733-1996.pdf
collection DOAJ
language English
format Article
sources DOAJ
author A. V. Mikhailov
M. Förster
T. Y. Leschinskaya
spellingShingle A. V. Mikhailov
M. Förster
T. Y. Leschinskaya
Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
Annales Geophysicae
author_facet A. V. Mikhailov
M. Förster
T. Y. Leschinskaya
author_sort A. V. Mikhailov
title Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
title_short Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
title_full Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
title_fullStr Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
title_full_unstemmed Disturbed vertical E×B plasma drifts in the equatorial F2 region at solar minimum deduced from observed NmF2 and hmF2 variations
title_sort disturbed vertical e×b plasma drifts in the equatorial f2 region at solar minimum deduced from observed nmf2 and hmf2 variations
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 1996-07-01
description Ground-based ionosonde and magnetic-field observations on the equatorial station Huancayo, ESRO4 neutral-composition measurements, and theoretical model calculations were used to analyze disturbed <strong>E</strong>×<strong>B</strong> vertical plasma drift during the phase of solar minimum in 1973. Vertical drifts calculated for disturbed days do not show the systematic decrease often mentioned in publications, and demonstrate strong dependence on IMF-<i>B<sub>z</sub></i> changes. It is confirmed with the help of our drift calculations that <i>B<sub>z</sub></i> turnings to a northward direction result in a decrease (up to reversal) of normal Sq (eastward during daytime and westward at nighttime) in the zonal component of electric field. Southward <i>B<sub>z</sub></i> excursions enhance normal <i>E<sub>y</sub></i> both in daytime and nighttime hours. Model predictions of <i>E<sub>y</sub></i>\'s reaction to IMF-<i>B<sub>z</sub></i> changes are discussed.
url https://www.ann-geophys.net/14/733/1996/angeo-14-733-1996.pdf
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AT mforster disturbedverticalebplasmadriftsintheequatorialf2regionatsolarminimumdeducedfromobservednmf2andhmf2variations
AT tyleschinskaya disturbedverticalebplasmadriftsintheequatorialf2regionatsolarminimumdeducedfromobservednmf2andhmf2variations
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