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dc.contributor.author
Mansilla, Gustavo Adolfo
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dc.date.available
2019-10-09T19:44:18Z
dc.date.issued
2006-12
dc.identifier.citation
Mansilla, Gustavo Adolfo; Equatorial and low latitude ionosphere during intense geomagnetic storms; Elsevier; Journal of Atmospheric and Solar-Terrestrial Physics; 68; 18; 12-2006; 2091-2100
dc.identifier.issn
1364-6826
dc.identifier.uri
http://hdl.handle.net/11336/85474
dc.description.abstract
An investigation is made in order to analyze the role of neutral gas composition in the equatorial and low latitude ionosphere during intense geomagnetic storms. To this end data taken by the Dynamic Explorer 2 satellite at 280-300 km (molecular nitrogen N2 and atomic oxygen O concentrations, electron density and vertical plasma drifts) are used. The sudden commencements of the events considered occurred at 11:38 UT on March 1, 1982, 18:41 UT on November 20, 1982 and 16:14 UT on February 4, 1983. Vertical plasma drifts are the most important contributor to the initial storm time response of the equatorial F region. Neutral composition changes (expressed as an increase in the molecular species, mainly N2) possibly play a predominant role in the equatorial and low latitude (10 – 200) decreases of electron density at heights near F2-region maximum during the main and recovery phases of intense geomagnetic storms. Delayed increases of electron density observed at daytime during the recovery phase may be also attributed to increases in atomic oxygen. At low latitudes possibly a combined effect of O increase and upward plasma drift due to enhanced equatorward winds is the responsible mechanism for the maintenance of enhanced electron density values.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Geomagnetic storms
dc.subject
Ionospheric storms
dc.subject
Equatorial anomaly
dc.subject.classification
Geoquímica y Geofísica
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Equatorial and low latitude ionosphere during intense geomagnetic storms
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-30T20:46:35Z
dc.journal.volume
68
dc.journal.number
18
dc.journal.pagination
2091-2100
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Mansilla, Gustavo Adolfo. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Ionósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
dc.journal.title
Journal of Atmospheric and Solar-Terrestrial Physics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jastp.2006.07.005
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1364682606001751/pdfft?md5=b6bad05be6a3ae00de53d2c642a09f49&pid=1-s2.0-S1364682606001751-main.pdf
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