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Climatology characterization of equatorial plasma bubbles using GPS data

AutorMagdaleno, S.; Herraiz Sarachaga, Miguel ; Altadill, David; Morena Carretero, B.
Palabras claveIonosphere (equatorial)
Total electron content
Aeronomy
Plasma physics
Remote sensing
Fecha de publicación12-ene-2017
EditorEDP Sciences
CitaciónJournal of Space Weather and Space Climate, 7: A3 (2017)
ResumenThe climatology of equatorial plasma bubbles (EPBs) for the period 1998–2008 was studied using slant total electron content (sTEC) derived from global positioning system (GPS) data. The sTEC values were calculated from data measured at 67 International GNSS Service (IGS) stations distributed worldwide around the geomagnetic equator and embracing the region of the ionospheric equatorial anomaly (IEA). EPBs and their characteristics were obtained using the Ionospheric Bubble Seeker (IBS) application, which detects and distinguishes sTEC depletions associated with EPBs. This technique bases its analysis on the time variation of the sTEC and on the population variance of this time variation. IBS finds an EPB by default when an sTEC depletion is greater than 5 TEC units (TECu). The analysis of the spatial behavior shows that the largest rate of EPB takes place at the equator and in the South America-Africa sector, while their occurrence decreases as the distance from the magnetic equator increases. The depth and duration of the sTEC depletions also maximize at the equator and in the South America-Africa sector and weaken departing from the equator. The results of the temporal analysis for the data of the IGS stations located in AREQ, NKLG, IISC, and GUAM indicate that the greatest rate of EPB occurrence is observed for high solar activity.
Versión del editorhttp://dx.doi.org/10.1051/swsc/2016039
URIhttp://hdl.handle.net/10261/143278
DOI10.1051/swsc/2016039
ISSN2115-7251
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