Statistical analysis on the ionospheric response over South American mid- and near high-latitudes during 70 intense geomagnetic storms occurred in the period of two decades

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dc.contributor.authorde Abreu A.J.
dc.contributor.authorCorreia E.
dc.contributor.authorde Jesus R.
dc.contributor.authorVenkatesh K.
dc.contributor.authorMacho E.P.
dc.contributor.authorRoberto M.
dc.contributor.authorFagundes P.R.
dc.contributor.authorGende M.
dc.date.accessioned2024-03-12T19:09:55Z
dc.date.available2024-03-12T19:09:55Z
dc.date.issued2023
dc.description.abstract© 2023 Elsevier LtdThe first-time statistical response of the positive and negative ionospheric storms phases using Vertical Total Electron Content (VTEC) measurements during 70 geomagnetic storms at near high- and mid-latitudes regions in the Antarctic and Argentine/Chilean sectors in the Southern hemisphere are investigated. The study covers the years between 1999 and 2018 of solar cycles 23 and 24, using the Dst ≤ −100 nT as a criterion for all 70 storms selected. Significant features of solar cycle, seasonal and local time of ionospheric storms are showed. Our results indicate that the occurrence of geomagnetic storms follows a pattern of solar activity dependence, and also indicate a predominance of positive and positive-negative phases during autumn, winter, and spring at mid-latitudes and winter at near high-latitudes. Negative and negative-positive phases occur during all seasons at near high- and mid-latitudes. In addition, positive phases occur more frequently during the daytime while the negative phases occur predominantly in nighttime. There is also a predominance of positive and positive-negative phases simultaneously at near high- and mid-latitudes in the Antarctic and Argentine/Chilean sectors. The percentages of occurrence of positive and positive-negative phases are of 50% and 19%, respectively, at mid-latitude and 60% and 22%, respectively, at near high-latitudes. Negative and negative-positive phases are below 9% at both latitudes.
dc.description.volume245
dc.identifier.doi10.1016/j.jastp.2023.106060
dc.identifier.issn1364-6826
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34094
dc.relation.ispartofJournal of Atmospheric and Solar-Terrestrial Physics
dc.rightsAcesso Restrito
dc.subject.otherlanguageAntarctic sector
dc.subject.otherlanguageGeomagnetic storm
dc.subject.otherlanguageGPS-TEC
dc.subject.otherlanguageIonosphere
dc.titleStatistical analysis on the ionospheric response over South American mid- and near high-latitudes during 70 intense geomagnetic storms occurred in the period of two decades
dc.typeArtigo
local.scopus.citations8
local.scopus.eid2-s2.0-85151483689
local.scopus.subjectAntarctic sector
local.scopus.subjectGeomagnetic storm
local.scopus.subjectGPS TEC
local.scopus.subjectGps-tec
local.scopus.subjectHigh Latitudes
local.scopus.subjectIonospheric storm
local.scopus.subjectMidlatitudes
local.scopus.subjectNegative phase
local.scopus.subjectPositive/negative
local.scopus.subjectSolar cycle
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85151483689&origin=inward
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