Anomalous night-time peaks in diurnal variations of NmF2 close to the geomagnetic equator: A statistical study

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dc.contributor.authorPavlov, A. V.
dc.contributor.authorPavlova, N. M.
dc.date.accessioned2018-10-30T15:57:14Z
dc.date.available2018-10-30T15:57:14Z
dc.date.issued2007-11
dc.description.abstractWe present a study of anomalous night-time NmF2 peaks, ANNPs, observed by the La Paz, Natal, Djibouti, Kodaikanal, Madras, Manila, Talara, and Huancayo–Jicamarca ionosonde stations close to the geomagnetic equator. It is shown for the first time that the probabilities of occurrence of the first and second ANNPs depend on the geomagnetic longitude, and there is a longitude sector close to 110° geomagnetic longitude where the first and second ANNPs occur less frequently in comparison with the longitude regions located close to and below about 34° geomagnetic longitude and close to and above about 144° geomagnetic longitude. The found frequencies of occurrence of the ANNPs increase with increasing solar activity, except of the Djibouti and Kodaikanal ionosonde stations, where the probability of the first ANNP occurrence is found to decrease with increasing solar activity from low to moderate solar activity, and except of the Natal ionosonde station, where the frequencies of occurrence of the first and second ANNPs decrease with increasing solar activity from moderate to high solar activity. We found that the occurrence probabilities of ANNPs during geomagnetically disturbed conditions are greater than those during geomagnetically quiet conditions. The ANNP probabilities are largest in summer and are lowest in winter for the La-Paz, Talara, and Huancayo–Jicamarca sounders. These probabilities are lowest in summer for the Djibouti, Madras, and Manila ionosonde stations, and in spring for the Kodaikanal sounder. The maximums in the probabilities are found to be in autumn for the Djibouti, Madras, and Manila ionosonde stations, and in winter for the Kodaikanal sounder.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationPavlov, A. V., & Pavlova, N. M. (2007). Anomalous night-time peaks in diurnal variations of NmF2 close to the geomagnetic equator: A statistical study.==$Journal of Atmospheric and Solar-Terrestrial Physics, 69$==(15), 1871-1883. https://doi.org/10.1016/j.jastp.2007.07.003es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jastp.2007.07.003es_ES
dc.identifier.journalJournal of Atmospheric and Solar-Terrestrial Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3230
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:1364-6826
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectLow-latitude ionospherees_ES
dc.subjectModeling and forecastinges_ES
dc.subjectGeomagnetismes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleAnomalous night-time peaks in diurnal variations of NmF2 close to the geomagnetic equator: A statistical studyes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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