@InProceedings{BrumAbBaFrSaBeBa:2004:TrIoDi,
               author = "Brum, Christiano Garnett Marques and Abdu, Mangalathayil Ali and 
                         Batista, Inez Staciarini and Fredrizzi, Mariangel and Santos, 
                         Pedrina Morais dos Santos and Bertoni, Fernando and Barros, 
                         Lucyana Pereira",
                title = "Travelling ionospheric disturbances detected by riometers in the 
                         sub-polar and the south atlantic magnetic anomaly regions",
            booktitle = "Proceedings...",
                 year = "2004",
         organization = "COSPAR Scientific Assembly, 35.",
             keywords = "Travelling Ionospheric Disturbances, cosmic noise absorption, 
                         lower ionosphere, riometer.",
             abstract = "Gravity waves propagating to thermospheric heights and interacting 
                         with the ionospheric plasma give rise to Travelling Ionospheric 
                         Disturbances (TIDs). These are visible as amplitude, phase and 
                         frequency quasi-periodical fluctuations of a radio signal 
                         reflected from the ionosphere and a variation of cosmic noise 
                         absorption intensity in the lower ionosphere, which can be 
                         registered by a riometer . The knowledge of the intensity of the 
                         wave disturbances of the neutral atmosphere and of ionospheric 
                         parameters and their forecast are important to many applications, 
                         like forecasting conditions of radio communication, aero- and 
                         spacecraft navigation and/or the development of forecasting 
                         numerical models of the general circulation and composition of the 
                         middle atmosphere and ionosphere. In this work, the previous 
                         analysis of occurrence of TIDs detected by riometers operating at 
                         30 MHz over Cachoeira Paulista (connected to an antenna pointed to 
                         the zenith direction, 22.50 oS; 45.00oW) and the Brazilian 
                         Antarctic Station - EACF (connected to an antenna pointed to the 
                         zenith and geomagnetic west directions, 62.56oS; 58.39oW) during 
                         almost one complete solar cycle (1989-1996) is presented. Its 
                         causes as well as possible sources will be also discussed.",
  conference-location = "Paris, France",
      conference-year = "18-25 july",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
           targetfile = "brum_traveling.pdf",
        urlaccessdate = "16 jun. 2024"
}