@Article{PaulinoMeBuTaSoGo:2011:PlBuZo,
               author = "Paulino, Igo and Medeiros, A. F. and Buriti, R A and Takahashi, H. 
                         and Sobral, Jose Humberto Andrade and Gobbi, D.",
          affiliation = "{} and {} and {} and {} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Plasma bubble zonal drift characteristics observed by airglow 
                         images over brazilian tropical region",
              journal = "Revista Brasileira de Geof{\'{\i}}sica",
                 year = "2011",
               volume = "29",
               number = "2",
                pages = "239--246",
                 note = "Setores de Atividade: Atividades profissionais, 
                         cient{\'{\i}}ficas e t{\'e}cnicas, Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.",
             keywords = "plasma bubble, airglow, ionosphere, bolhas de plasma, 
                         aeroluminescˆencia, ionosfera.",
             abstract = "Using airglow images observed at Sao Joao do Cariri 
                         (7.4\◦S, 36.5\◦W; dip angle: 11\◦S) from 
                         September 2000 to April 2007, plasma bubble zonal drifts for 
                         ninety-seven geomagnetically quiet nights (Dst index higher than 
                         30 nT) were calculated. The plasma bubble eastward averaged drifts 
                         presented an increase from 18:00 to 22:00 local time (LT), and 
                         followed by a deceleration. The plasma bubbles observed during 
                         high solar activity were faster after 22:00 LT. Eastward drifts 
                         observed during the summer, after 21:00 LT, were higher than 
                         drifts observed during the equinox months. Few nights had plasma 
                         bubble eastward drifts higher than 100 m/s and almost all bubbles 
                         disappeared after 02:00 LT. Averaged zonal drifts observed between 
                         9.5 and 5.5\◦S were almost constant, primarily, around 
                         23:00 LT. RESUMO. Usando imagens de aeroluminescencia coletadas em 
                         Sao Joao do Cariri (7,4\◦S, 36,5\◦W; latitude de 
                         dipolo magn´etico: 11\◦S) no per´\ıodo de setembro de 
                         2000 a abril de 2007, foi poss´\ıvel calcular a deriva zonal 
                         de bolhas de plasma em noventa e sete noites geomagneticamente 
                         calmas (´\ındice Dst maior que 30 nT). As derivas zonais 
                         m´edias das bolhas de plasma aumentaram das 18:00 at´e as 22:00 
                         horas locais (HL) e desaceleraram em seguida. As bolhas de plasma 
                         observadas durante a atividade solar alta foram mais r´apidas 
                         ap´os as 22:00 HL. As derivas zonais de bolhas de plasma no verao, 
                         depois das 21:00 HL, foram maiores que nos meses de equin´ocio. 
                         Poucas noites apresentaram bolhas de plasma com derivas superiores 
                         a 100 m/s e quase todas as bolhas desapareceram depois das 02:00 
                         HL. As derivas m´edias zonais observadas entre 9,5 e 5,5\◦S 
                         foram praticamente constantes, principalmente, por volta das 23:00 
                         HL.",
                 issn = "0102-261X",
                label = "lattes: 6775918052021463 5 PaulinoMeBuTaSoGo:2012:PLBUZO",
             language = "pt",
           targetfile = "a03v29n2.pdf",
        urlaccessdate = "19 maio 2024"
}