The effect of geomagnetic activity changes on the ionospheric critical frequencies (foF2) at magnetic conjugate points

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dc.contributor.authorTimoçin, Erdinç
dc.contributor.authorÜnal, İbrahim
dc.contributor.authorTulunay, Yurdanur
dc.contributor.authorGöker, Ümit Deniz
dc.date.accessioned2024-03-19T02:39:08Z
dc.date.available2024-03-19T02:39:08Z
dc.date.issued2018en_US
dc.departmentİktisadi İdari ve Sosyal Bilimler Fakültesien_US
dc.description.abstractIn this work, we investigate the possible effects of geomagnetic activity on the ionospheric critical frequencies (foF2) in geomagnetic conjugate points. For this purpose, hourly foF2 data measured for the year 1976 from the ionosonde stations Akita, St. John’s and Resolute Bay in the Northern hemisphere and their corresponding magnetic conjugate ionosonde stations Brisbane, Halley Bay and Scott Base in the Southern hemisphere are examined. Planetary geomagnetic activity ‘‘3h-Kp” indices are used as a geomagnetic activity indicator. foF2 data in the magnetic conjugate points (MCP) are investigated by using a superposed epoch analysis method. This analysis is done depending on the response of foF2 to geomagnetic activity variations in MCP based on geomagnetic stormy days around equinoxes (March 21, September 23) and solstices (June 21, December 21), and the results obtained from these MCP are compared. From these results, it is found that foF2 values in magnetic conjugate pairs give similar reactions to geomagnetic activity variations simultaneously, although this relationship differs according to the seasons and magnetic latitudes of the stations.en_US
dc.identifier.doi10.1016/j.asr.2018.05.035en_US
dc.identifier.endpage828en_US
dc.identifier.issn0273-1177
dc.identifier.issn1879-1948
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85048324489en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage821en_US
dc.identifier.urihttps://hdl.handle.net/11363/7223
dc.identifier.urihttps://doi.org/
dc.identifier.volume62en_US
dc.identifier.wosWOS:000441643700007en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorGöker, Ümit Deniz
dc.language.isoenen_US
dc.publisherELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDen_US
dc.relation.ispartofADVANCES IN SPACE RESEARCHen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectIonospheric critical frequencyen_US
dc.subjectGeomagnetic activityen_US
dc.subjectMagnetic conjugateen_US
dc.subjectSuperposed epoch analysisen_US
dc.titleThe effect of geomagnetic activity changes on the ionospheric critical frequencies (foF2) at magnetic conjugate pointsen_US
dc.typeArticleen_US

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