%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ETL868
%X This investigation presents observations related to the generation of equatorial ionospheric irregularities (also known as equatorial spread F (ESF)) including ionospheric plasma bubbles and dynamic behavior of the ionospheric F-region in the South American sector during an intense geomagnetic storm in December 2006 (a period of low solar activity). In this work, ionospheric sounding observations and GPS data obtained between 13 and 16 December 2006 at several stations in the South American sector are presented. On the geomagnetically disturbed night of 14 and 15 December, ionospheric plasma bubbles were observed after an unusual uplifting of the F-region during pre-reversal enhancement (PRE) period. The unusual uplifting of the F-region during PRE was possibly associated with prompt penetration of electric field of magnetospheric origin. During the geomagnetic disturbance night of 14 and 15 December, strong oscillations due to the propagation of traveling ionospheric disturbances (TIDs) by the Joule heating in the auroral region were observed in the F-region at São José dos Campos (SJC, 23.2°S, 45.9°W; dip latitude 17.6°S), Brazil, and Port Stanley (PST, 51.6°S, 57.9°W; geom. latitude 41.6°S). The VTEC-GPS observations presented on the night of 14 and 15 December 2006 show both positive and negative storm phases in the South American sector, possibly due to changes in the large-scale wind circulation and changes in the O/N2 ratio in the southern hemisphere, respectively.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%N 7
%T Effects observed in the ionospheric F-region in the South American sector during the intense geomagnetic storm of 14 December 2006
%@secondarytype PRE PI
%K Space weather, Geomagnetic storm, Spread-F, Ionosphere.
%@archivingpolicy denypublisher denyfinaldraft24
%@usergroup administrator
%@usergroup banon
%@usergroup marciana
%@usergroup simone
%@group
%@group DAE-CEA-INPE-MCT-BR
%3 effects observed.pdf
%@secondarykey INPE--PRE/
%@secondarymark B4_ASTRONOMIA_/_FÍSICA B3_CIÊNCIAS_BIOLÓGICAS_I B1_ENGENHARIAS_III B1_ENGENHARIAS_IV B1_GEOCIÊNCIAS B1_INTERDISCIPLINAR
%@issn 0273-1177
%2 sid.inpe.br/mtc-m19@80/2010/06.01.13.40.24
%@affiliation
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidad Nacional de La Plata
%@affiliation Universidad Nacional de La Plata
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Universidade do Vale do Paraiba (UNIVAP)
%@affiliation Universidade Luterana do Brasil (ULBRA)
%B Advances in Space Research
%@versiontype publisher
%P 909-920
%4 sid.inpe.br/mtc-m19@80/2010/06.01.13.40
%@documentstage not transferred
%D 2010
%V IP51462546
%@doi 10.1016/j.asr.2010.04.031
%A Jesus, R. de,
%A Sahai, Y.,
%A Guarnieri, F. L.,
%A Fagundes, P. R.,
%A Abreu, A. J. de,
%A Becker-Guedes, F.,
%A Brunini, C.,
%A Gende, M.,
%A Cintra, T. M. F.,
%A Souza, V. A. de,
%A Pillat, V. G.,
%A Lima, W. L. C.,
%@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX.
%@area CEA