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@Article{JesusSGFABBGCSPL:2010:EfObIo,
               author = "Jesus, R. de and Sahai, Y. and Guarnieri, F. L. and Fagundes, P. 
                         R. and Abreu, A. J. de and Becker-Guedes, F. and Brunini, C. and 
                         Gende, M. and Cintra, T. M. F. and Souza, V. A. de and Pillat, V. 
                         G. and Lima, W. L. C.",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade do Vale do Paraiba (UNIVAP)} and {Universidade do 
                         Vale do Paraiba (UNIVAP)} and {Universidade do Vale do Paraiba 
                         (UNIVAP)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Universidad Nacional de La Plata} and {Universidad Nacional 
                         de La Plata} and {Universidade do Vale do Paraiba (UNIVAP)} and 
                         {Universidade do Vale do Paraiba (UNIVAP)} and {Universidade do 
                         Vale do Paraiba (UNIVAP)} and {Universidade Luterana do Brasil 
                         (ULBRA)}",
                title = "Effects observed in the ionospheric F-region in the South American 
                         sector during the intense geomagnetic storm of 14 December 2006",
              journal = "Advances in Space Research",
                 year = "2010",
               volume = "IP51462546",
               number = "7",
                pages = "909--920",
             keywords = "Space weather, Geomagnetic storm, Spread-F, Ionosphere.",
             abstract = "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 S{\~a}o 
                         Jos{\'e} dos Campos (SJC, 23.2S, 45.9W; dip latitude 17.6S), 
                         Brazil, and Port Stanley (PST, 51.6S, 57.9W; geom. latitude 
                         41.6S). 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.",
                  doi = "10.1016/j.asr.2010.04.031",
                  url = "http://dx.doi.org/10.1016/j.asr.2010.04.031",
                 issn = "0273-1177",
             language = "en",
           targetfile = "effects observed.pdf",
        urlaccessdate = "27 jan. 2021"
}


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