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@Article{JonahPaMuDuKhNeOt:2015:TEVaDu,
               author = "Jonah, Olusegun Folarin and Paula, Eurico Rodrigues de and Muella, 
                         M. T. and Durtra, Severino Luiz Guimar{\~a}es and Kherani, Esfhan 
                         Alam and Negreti, Patr{\'{\i}}cia Mara de Siqueira and Otsuka, 
                         Y.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade do Vale 
                         do Para{\'{\i}}ba (UNIVAP)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Nagoya University}",
                title = "TEC variation during high and low solar activities over South 
                         American sector",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2015",
               volume = "135",
                pages = "22--35",
                month = "Dec.",
             keywords = "Total Electron Content (TEC), Diurnal, seasonal, latitudinal and 
                         longitudinal variations of TEC, TEC periodicity during high and 
                         low solar activities, Equatorial Ionization anomaly at different 
                         seasons.",
             abstract = "Using dual frequency GPS receivers in the South American sector, 
                         the measurement of absolute ionospheric Total Electron Content 
                         (TEC) has been estimated applying the Nagoya ionospheric model for 
                         both the years of 2009 and 2001, which represent low and high 
                         solar activities, respectively. The diurnal, day-to-day, monthly, 
                         seasonal, latitudinal and longitudinal variations of TEC were 
                         studied for equatorial and low latitude regions of South America. 
                         The strength and characteristics of the Equatorial Ionization 
                         Anomaly (EIA) were equally analyzed. The analyses reveal the 
                         diurnal, seasonal and semidiurnal TEC variation, as well as the 
                         nighttime variability during the low and high solar activities. 
                         Wavelet power spectra analysis was employed to check the 
                         periodicities of the TEC data, F10.7 and zonal and meridional wind 
                         velocities measured by Meteor radar at \∼100 km altitude. 
                         Periods such as 27, 16, 810, 15 days were found to be dominant in 
                         the zonal and meridional wind velocity corresponding with those of 
                         TEC periodicities. Hence, besides the solar radiation, we suggest 
                         that there are contributions of tides and planetary waves in 
                         spatial and temporal TEC enhancement and variations during the 
                         geomagnetic quiet periods of both solar activities.",
                  doi = "10.1016/j.jastp.2015.10.005",
                  url = "http://dx.doi.org/10.1016/j.jastp.2015.10.005",
                 issn = "1364-6826",
             language = "en",
        urlaccessdate = "26 nov. 2020"
}


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