@Article{ShumePaulAbdu:2011:MoEqEl,
               author = "Shume, Esayas Belay and Paula, Eurico Rodrigues de 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 = "Modulation of equatorial electrojet plasma waves by overshielding 
                         electric field during geomagnetic storms",
              journal = "Journal of Applied Geophysics",
                 year = "2011",
               volume = "116",
                pages = "A08302",
                month = "Aug",
             keywords = "Equatorial electrojet, Plasma irregularities, S{\~a}o Luis, MA.",
             abstract = "This brief report presents daytime 30 MHz radar observations of 
                         equatorial electrojet plasma irregularities in S{\~a}o 
                         Lu{\'{\i}}s, Brazil, during the 10 January 2002, 4 September 
                         2002, and 6 November 2001 geomagnetic storms. Modulation of 
                         equatorial electrojet plasma waves by the overshielding electric 
                         field is detected by the radar during the January and September 
                         storm events. The depressions of radar echo intensity observed by 
                         the S{\~a}o Lu{\'{\i}}s radar during the 10 January and 4 
                         September 2002 storms are caused by inhibition of large-, medium-, 
                         and short-scale electrojet plasma waves by the overshielding 
                         electric field. Corresponding to the depressions of the radar 
                         echoes, counter equatorial electrojets were observed by 
                         ground-based magnetometer in S{\~a}o Lu{\'{\i}}s. The 
                         influences of disturbance dynamo, undershielding, and 
                         overshielding electric fields on the equatorial electrojet 
                         irregularities and current have been evident on the 6 November 
                         2001 radar and magnetic field data. This study demonstrates the 
                         control of the equatorial electrojet plasma waves (growth and 
                         suppression) by the interplanetary magnetic field and also the 
                         coupling between the high-latitude and equatorial ionospheres.",
                  doi = "10.1029/2010JA016353",
                  url = "http://dx.doi.org/10.1029/2010JA016353",
                 issn = "0926-9851",
             language = "en",
        urlaccessdate = "04 maio 2024"
}