@Article{ShumePauKheAbdDen:2011:EqElPl,
               author = "Shume, Esayas Bellay and Paula, Eurico Rodrigues de and Kherani, 
                         Esfhan Alam and Abdu, Mangalatayil Ali and Denardini, Cl{\'e}zio 
                         Marcos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Equatorial electrojet plasma irregularities observed during late 
                         afternoon by the 30MHz coherent scatter radar in S{\~a}o 
                         Lu{\'{\i}}s, Brazil",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2011",
               volume = "73",
               number = "11-12",
                pages = "1560--1567",
                month = "July",
             keywords = "Type I and II echoes, Electrojet plasma irregularity, Electric 
                         fields.",
             abstract = "Coherent scatter radar observations conducted right before 
                         twilight by the 30 MHz radar in Sao Luis (Brazil) during both 
                         quiet (December 10, 2001) and disturbed (December 12, 2001) 
                         conditions detected type I echoes on the shoulders of broad type 
                         II spectra (near zero Doppler velocity). Zonal electric fields 
                         inferred from the Sao Luis ionosonde have a larger magnitude 
                         during the period where these spectral observations were made than 
                         on December 18, 2001 when type I echoes were not observed during 
                         late afternoon. The IMF B(z) and AE index indicate that the 
                         extended geomagnetic disturbance in the afternoon of December 12, 
                         2001 has allowed the interaction between disturbance dynamo and 
                         prompt penetration electric fields. The latter electric field 
                         component could have exceeded the former to give rise to the 
                         observed electric fields, and make possible observation of type I 
                         echoes.",
                  doi = "10.1016/j.jastp.2011.02.015",
                  url = "http://dx.doi.org/10.1016/j.jastp.2011.02.015",
                 issn = "1364-6826",
             language = "en",
        urlaccessdate = "09 maio 2024"
}