@InProceedings{JonahKherPaul:2015:ObTePe,
               author = "Jonah, Olusegun Folarin and Kherani, Esfhan Alam and Paula, Eurico 
                         Rodrigues de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Observation of tec perturbation associated with medium scale 
                         travelling ionospheric disturbance at the brazilian sector",
                 year = "2015",
         organization = "International Congress of the Brazilian Geophysical Society, 14.",
             abstract = "Using Total Electron Content (TEC) data obtained from GNSS data 
                         over the Brazilian region, we investigate two-dimensional 
                         structures of MediumScale Travelling Ionospheric Disturbances 
                         (MSTIDs). Our analyzed data are taken from -55°W to -45°W and 
                         -30°S to -20°S for the geomagnetic quiet days of 5 (D5), 6 (D6), 
                         26 (D26), 27 (D27) December 2011 during daytime between 1217 UT. A 
                         new method is applied to derive the perturbation component of TEC, 
                         by subtracting average TEC at one location as a function of time 
                         from a polynomial best fit of TEC at that location. Consequently, 
                         by computing the crosscorrelation of the perturbation TEC with 
                         change in space-time, we observe the manifestations of MSTIDs 
                         characteristics like, velocity, direction of propagation, 
                         wavelength etc. Since gravity wave is the principal daytime MSTIDs 
                         mechanism, we investigate a possible connection between the 
                         observed MSTIDs and Gravity waves by analyzing the temporal 
                         variation of the height (h) of the F region over a 
                         lowto-mid-latitude station of Cachoeira Paulista, (-45°W, 22°S, 
                         dip latitude 16.9o S). This method reveals a maximum correlation 
                         between these two parameters suggesting an enhancement of gravity 
                         wave activity during the time when MSTIDs were observed.",
  conference-location = "Rio de Janeiro, RJ",
      conference-year = "3-6 Aug.",
        urlaccessdate = "18 abr. 2024"
}