@Article{JesusFCBSBAVGAS:2016:EfInGe,
author = "Jesus, Rodolfo de and Fagundes, P. R. and Coster, A. and Bolaji,
O. S. and Sobral, Jos{\'e} Humberto Andrade and Batista, Inez
Staciarini and Abreu, Alessandro Jos{\'e} de and Venkatesh, K.
and Gende, M. and Abalde, Jos{\'e} Ricardo and Sumod, S. G.",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and MIT and
{Univ Lagos} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Univ Nacl
La Plata} and {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)}
and {Mahatma Gandhi University}",
title = "Effects of the intense geomagnetic storm of September-October 2012
on the equatorial, low- and mid-latitude F region in the American
and African sector during the unusual 24th solar cycle",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2016",
volume = "138",
pages = "93--105",
month = "Feb.",
keywords = "Space weather, Geomagnetic storm, Ionosphere, Ionospheric
irregularities.",
abstract = "The main purpose of this paper is to investigate the response of
the ionospheric F layer in the American and African sectors during
the intense geomagnetic storm which occurred on 30 September-01
October 2012. In this work, we used observations from a chain of
20 GPS stations in the equatorial, low- and mid latitude regions
in the American and African sectors. Also, in this study
ionospheric sounding data obtained during 29th September to 2nd
October, 2012 at Jicamarca (JIC), Peru, Sao Luis (SL), Fortaleza
(FZ), Brazil, and Port Stanley (PST), are presented. On the night
of 30 September-01 October, in the main and recovery phase, the
h'F variations showed an unusual uplifting of the F region at
equatorial (JIC, SL and FZ) and mid- (PST) latitude stations
related with the propagations of traveling ionospheric
disturbances (TIDs) generated by Joule heating at auroral regions.
On 30 September, the VTEC variations and foF2 observations at
mid-latitude stations (American sector) showed a long-duration
positive ionospheric storm (over 6 h of enhancement) associated
with large-scale wind circulations and equatorward neutral winds.
Also, on 01 October, a long-duration positive ionospheric storm
was observed at equatorial, low and mid- latitude stations in the
African sector, related with the large-scale wind circulations and
equatorward neutral winds. On 01 and 02 October, positive
ionospheric storms were observed at equatorial, low- and
mid-latitude stations in the American sector, possibly associated
with the TIDs and an equatorward neutral wind. Also, on 01 October
negative ionospheric storms were observed at equatorial, low- and
mid-latitude regions in the American sector, probably associated
with the changes in the O/N-2 ratio. On the night of 30
September-01 October, ionospheric plasma bubbles were observed at
equatorial, low- and mid- latitude stations in the South American
sector, possibly associated with the occurrence of geomagnetic
storm.",
doi = "10.1016/j.jastp.2015.12.015",
url = "http://dx.doi.org/10.1016/j.jastp.2015.12.015",
issn = "1364-6826",
language = "en",
targetfile = "Jesus_effects.pdf",
urlaccessdate = "23 maio 2024"
}