@Article{AveiroDenaAbdu:2009:ClGrWa,
               author = "Aveiro, Henrique Carlotto and Denardini, Clezio Marcos and Abdu, 
                         Mangalathayil Ali",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Climatology of gravity waves-induced electric fields in the 
                         equatorial E region",
              journal = "Journal of Geophysical Research",
                 year = "2009",
               volume = "114",
               number = "A11308",
                month = "Nov.",
             keywords = "climatology, gravity waves, electric fields, equatorial E 
                         region.",
             abstract = "Equatorial electrojet (EEJ) observations using VHF radars show 
                         backscattered echoes from two types of electron density 
                         irregularities explained by the modified two-stream (Type I) and 
                         the gradient drift (Type II) instabilities. From the Type II 
                         irregularity velocities obtained by a radar installed at S{\~a}o 
                         Luiz Space Observatory (2.58S, 44.23W, magnetic latitude 0.23S) we 
                         have inferred the vertical electric fields (Ez). The Ez inference 
                         was based on geomagnetic field and atmospheric models. A harmonic 
                         analysis of these electric fields shows the presence of gravity 
                         waves (GW) induced oscillations in the EEJ. We calculated the 
                         ratio between GW-related electric fields and the total Ez, which 
                         is an indicator of the efficiency in the production of an 
                         additional electric field due to a gravity wave neutral wind. In 
                         the present paper we describe the methodology of analysis and 
                         discuss some characteristics of the gravity waves that could 
                         modify the equatorial ionospheric electric fields.",
                  doi = "10.1029/2009JA014177",
                  url = "http://dx.doi.org/10.1029/2009JA014177",
                 issn = "0148-0227 and 2156-2202",
                label = "lattes: 8030262077949409 2 AveiroNardAbdu:2009:Si2DWa",
             language = "en",
           targetfile = "jgra19930.pdf",
                  url = "http://www.ann-geophys.net/27/631/2009/angeo-27-631-2009.html",
        urlaccessdate = "04 maio 2024"
}