@InProceedings{Madeira:2024:UnBaBe,
               author = "Madeira, Roberto Livy da Costa",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "The unusual backward behavior of the ionospheric irregularity 
                         velocities over Cachoeira Paulista – Brazil",
            booktitle = "Resumos...",
                 year = "2024",
               editor = "Lago, Alisson Dal and Silva, Marlos Rockenbach da",
         organization = "Semana Acad{\^e}mica da Geof{\'{\i}}sica Espacial (SAGE)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "The ionosphere over Brazilian sector presents peculiar features 
                         due to several factors, among them, the geomagnetic 
                         characteristics, action of neutral winds, disturbance dynamos, and 
                         the occurrence of Equatorial Plasma Bubbles (EPB). These EPBs are 
                         large structures of depleted plasma which decay into successive 
                         smaller ones under a cascade process, giving rise to Fresnel 
                         structures of the 100-300 m order. Such structures impose 
                         scintillations on the satellite signals, degrading the information 
                         contained within them, and, in most intense events, the loss of 
                         lock of the satellite, when the power on the receiver is too low. 
                         The present study intends to analyze the drift of the Fresnel 
                         structures over Cachoeira Paulista station with emphasis on the 
                         geomagnetic westward velocity observation, once the usual 
                         direction is the eastward (geomagnetic) one. The period of study 
                         comprises the October 2023 March 2024 interval, and it is present 
                         two possible explanations for the observed phenomenon.",
  conference-location = "S{\~a}o Jos{\'e} dos Campos",
      conference-year = "26 a 29 nov. 2024",
             language = "en",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD2USPTW34P/4CHSFS2",
                  url = "http://urlib.net/ibi/8JMKD2USPTW34P/4CHSFS2",
           targetfile = "Madeira_Unusual.pdf",
                 type = "Space Weather Ionosphere",
        urlaccessdate = "2025, Jan. 15"
}