author = "Essien, Patrick and Takahashi, Hisao and Figueiredo, Cosme 
                         Alexandre Oliveira Barros and Wrasse, Cristiano Max and Barros, C. 
                         M. and Gobbi, Delano and Lomotey, S. O.",
          affiliation = "{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 {} and {} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Study of medium-scale traveling ionospheric disturbances observed 
                         in the South American equatorial and low latitude region",
                 year = "2019",
         organization = "CEDAR",
             abstract = "Total electron content (TEC) fluctuation in the ionosphere is one 
                         of the main unresolved problems on navigation systems, related to 
                         degrading resolution and reliability of the ground positioning. 
                         The South American low/equatorial latitude ionospheric region is 
                         where the highest spatial and temporal variations ofTEC and 
                         various features of the ionosphere such as Medium-Scale Traveling 
                         Ionospheric Disturbances (MST!Ds) among others can be found. 
                         Therefore, the need to study the MSTIDs that propagate in the 
                         regions is the main focus of the present work. Using data 
                         collected by GNSS (GLONASS and GPS specifically) dual frequency 
                         receivers network over the South American region, we developed 
                         detrending TEC maps to recognize the presence and characterize 
                         MST!Ds in terms of horizontal wavelength, period, phase velocity 
                         and propagation direction. Preliminary results obtained from the 
                         data in 2014 and 2015 are presented and discussed. We noted that 
                         atmospheric gravity waves could be one of the prime precursors of 
                         the MST!Ds observed.",
  conference-location = "Santa Fe, New Mexico",
      conference-year = "16-21 june",
             language = "en",
        urlaccessdate = "14 abr. 2021"