Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors

The equatorial electrojet (EEJ) is a narrow band of current flowing eastward at the ionospheric <i>E</i> region altitudes along the dayside dip equator. Mutually perpendicular electric and magnetic fields over the equator results in the formation of equatorial ionization anomaly (EIA), w...

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Autores principales: Venkatesh, Kavutarapu, Fagundes, Paulo Roberto, Prasad, D. S. V. V. D., Denardini, Clezio Marcos, Abreu, Alessandro José de, Jesus, Rodolfo de, Gende, Mauricio Alfredo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Astronomía
Física
Electron density variability
Equatorial and low-latitude ionosphere
Equatorial electrojet (EEJ)
Equatorial ionization anomaly (EIA)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/99751
https://ri.conicet.gov.ar/11336/53421
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2015JA021307
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-99751
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Física
Electron density variability
Equatorial and low-latitude ionosphere
Equatorial electrojet (EEJ)
Equatorial ionization anomaly (EIA)
spellingShingle Astronomía
Física
Electron density variability
Equatorial and low-latitude ionosphere
Equatorial electrojet (EEJ)
Equatorial ionization anomaly (EIA)
Venkatesh, Kavutarapu
Fagundes, Paulo Roberto
Prasad, D. S. V. V. D.
Denardini, Clezio Marcos
Abreu, Alessandro José de
Jesus, Rodolfo de
Gende, Mauricio Alfredo
Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
topic_facet Astronomía
Física
Electron density variability
Equatorial and low-latitude ionosphere
Equatorial electrojet (EEJ)
Equatorial ionization anomaly (EIA)
description The equatorial electrojet (EEJ) is a narrow band of current flowing eastward at the ionospheric <i>E</i> region altitudes along the dayside dip equator. Mutually perpendicular electric and magnetic fields over the equator results in the formation of equatorial ionization anomaly (EIA), which in turn generates large electron density variabilities. Simultaneous study on the characteristics of EEJ and EIA is necessary to understand the role of EEJ on the EIA variabilities. This is helpful for the improved estimation of total electron content (TEC) and range delays required for satellite-based communication and navigation applications. Present study reports simultaneous variations of EEJ and GPS-TEC over Indian and Brazilian sectors to understand the role of EEJ on the day-to-day characteristics of the EIA. Magnetometer measurements during the low solar activity year 2004 are used to derive the EEJ values over the two different sectors. The characteristics of EIA are studied using two different chains of GPS receivers along the common meridian of 77E (India) and 45W (Brazil). The diurnal, seasonal, and day-to-day variations of EEJ and TEC are described simultaneously. Variations of EIA during different seasons are presented along with the variations of the EEJ in the two hemispheres. The role of EEJ variations on the characteristic features of the EIA such as the strength and temporal extent of the EIA crest has also been reported. Further, the time delay between the occurrences of the day maximum EEJ and the well-developed EIA is studied and corresponding results are presented in this paper.
format Articulo
Articulo
author Venkatesh, Kavutarapu
Fagundes, Paulo Roberto
Prasad, D. S. V. V. D.
Denardini, Clezio Marcos
Abreu, Alessandro José de
Jesus, Rodolfo de
Gende, Mauricio Alfredo
author_facet Venkatesh, Kavutarapu
Fagundes, Paulo Roberto
Prasad, D. S. V. V. D.
Denardini, Clezio Marcos
Abreu, Alessandro José de
Jesus, Rodolfo de
Gende, Mauricio Alfredo
author_sort Venkatesh, Kavutarapu
title Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
title_short Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
title_full Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
title_fullStr Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
title_full_unstemmed Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors
title_sort day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the indian and brazilian sectors
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/99751
https://ri.conicet.gov.ar/11336/53421
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2015JA021307
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