%0 Journal Article
%3 sdarticle.pdf
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%4 sid.inpe.br/mtc-m19/2011/08.01.18.26
%8 July
%@issn 1364-6826
%A Nogueira, Paulo Alexandre Bronzato,
%A Abdu, Mangalathayil Ali,
%A Batista, Inez Saciarini,
%A Siqueira, P. M. de,
%@secondarytype PRE PI
%B Journal of Atmospheric and Solar-Terrestrial Physics
%D 2011
%F self-archiving-INPE-MCTIC-GOV-BR
%@secondarykey INPE--PRE/
%K Equatorial ionization anomaly, Thermospheric winds, Magnetic storms, Vertical drifts.
%@archivingpolicy denypublisher denyfinaldraft24
%N 11-12
%P 1535-1543
%@secondarymark B2_ASTRONOMIA_/_FÍSICA B1_CIÊNCIAS_BIOLÓGICAS_I B1_ECOLOGIA_E_MEIO_AMBIENTE B1_ENGENHARIAS_IV B1_GEOCIÊNCIAS A2_INTERDISCIPLINAR
%T Equatorial ionization anomaly and thermospheric meridional winds during two major storms over Brazilian low latitudes
%V 73
%X The equatorial ionosphere responses over Brazil to two intense magnetic storms that occurred during 2001 are investigated. The equatorial ionization anomaly (EIA) and variations in the zonal electric field and meridional winds at different storms phases are studied using data collected by digisondes and GPS receivers. The difference between the F layer peak density (foF2) at an equatorial and a low latitude sites was used to quantify the EIA; while the difference between the true heights (hF) at the equatorial and an off-equatorial site was used to calculate the magnetic meridional winds. The vertical drift was calculated as dhF/dt. The results show prompt penetration electric fields causing unusual early morning development of the EIA, and disturbed dynamo electric field producing significant modification in the F region parameters. Variations to different degrees in the vertical drift, the thermospheric meridional winds and the EIA developments were observed depending on the storm phases.
%@area CEA
%@e-mailaddress secretaria.cpa@dir.inpe.br
%@documentstage not transferred
%@group DAE-CEA-INPE-MCT-BR
%@group DAE-CEA-INPE-MCT-BR
%@group DAE-CEA-INPE-MCT-BR
%@group DAE-CEA-INPE-MCT-BR
%@dissemination WEBSCI; PORTALCAPES; AGU; MGA; COMPENDEX.
%@usergroup administrator
%@usergroup secretaria.cpa@dir.inpe.br
%@nexthigherunit 8JMKD3MGPCW/3ETL868
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@versiontype publisher
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@doi 10.1016/j.jastp.2011.02.008
%2 sid.inpe.br/mtc-m19/2011/08.01.18.26.09