@Article{TakahashiATPPKMWBSGAPVF:2010:EqIoBo,
               author = "Takahashi, Hisao and Abdu, M. A. and Taylor, M. J. and Pautet, 
                         P-D. and Paula, Eurico de and Kherani, E. A. and Medeiros, A. F. 
                         and Wrasse, C. Max and Batista, Ines S. and Sobral, Jos{\'e} 
                         Humberto Andrade and Gobbi, Delano and Arruda, D. and Paulino, I. 
                         and Vadas, S. and Fritts, D.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Utah State University} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         de Campina Grande} and {Universidade de Vale Do Para{\'{\i}}ba} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Colorado Research Associates} and {Colorado 
                         Research Associates}",
                title = "Equatorial ionosphere bottom-type spread F observed by OI 630.0 nm 
                         airglow imaging",
              journal = "Geophysical Research Letters",
                 year = "2010",
               volume = "37",
               number = "3",
                month = "Feb.",
             keywords = "All-sky imager, Coherent radar, Equatorial ionosphere, Equatorial 
                         regions, Long duration, Magnetic meridian, Optical imagers, Plasma 
                         bubble, Side scattering, Spread F.",
             abstract = "Bottom-type spread F events were observed in the south American 
                         equatorial region by a VHF coherent radar and an ionosonde at 
                         S{\~a}o Lu{\'{\i}}s (2.5°S, 44.3°W), an ionosonde at Fortaleza 
                         (3.9°S, 38.4°W) and an airglow OI 630.0 nm imager at Cariri 
                         (7.4°S, 36.5°W) and Brasilia (14.8°S, 47.6°W). In the evening of 
                         September 30, 2005, a long duration (\∼70 minutes) bottom 
                         side scattering layer, confined in a narrow height region, was 
                         observed. At the same time all-sky imager observed sinusoidal 
                         intensity depletions in the zonal plane extending more than 1500 
                         km and elongated along the magnetic meridian. No strong spread F 
                         structures developed during the period. Subsequently well 
                         developed plasma bubbles were observed. This suggests that the 
                         observed bottom-type spread F is an initial phase of the plasma 
                         bubbles. We report, for the first time, longitudinal and 
                         latitudinal extension of the bottom-type spread F as diagnosed by 
                         optical imagers.",
                  doi = "10.1029/2009GL041802",
                  url = "http://dx.doi.org/10.1029/2009GL041802",
                 issn = "0094-8276",
             language = "en",
           targetfile = "06.01.19.31__0094-8276.pdf",
        urlaccessdate = "12 maio 2024"
}