@Article{SantosBaBrSoAbSo:2021:ReElFi,
               author = "Santos, Angela Machado dos and Batista, Inez Staciarini and Brum, 
                         Christiano Garnett Marques and Sobral, Jos{\'e} Humberto Andrade 
                         and Abdu, Mangalathayil Ali and Souza, Jonas Rodrigues de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {University of Central 
                         Florida} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "F Region Electric Field Effects on the Intermediate Layer Dynamics 
                         During the Evening Prereversal Enhancement at Equatorial Region 
                         Over Brazil",
              journal = "Journal of Geophysical Research: Space Physics",
                 year = "2021",
               volume = "126",
               number = "3",
                pages = "e2020JA028429",
                month = "Mar.",
             abstract = "Using ionograms from the Brazilian equatorial site of S{\~a}o 
                         Lu{\'{\i}}s (SL, 2° S; 44° W, I = \−3.8°), the 
                         relationship between the uplift of the intermediate layers (ILs) 
                         at sunset and the prereversal enhancement of the zonal electric 
                         field (PRE) is investigated. The ILs were studied during the solar 
                         maximum (2003) and minimum activity (2009) periods. The presence 
                         of the ILs during the PRE occurrence time was very low during both 
                         years. In 2003, six ILs events were observed, being four of them 
                         in the summer solstice and one in the March equinox. In 2009, only 
                         a single event was registered and occurred during the December 
                         month. The results show that depending on the height at which the 
                         ILs are located, their upward movement at sunset can be in some 
                         way related to the normal F layer rise at sunset due to the PRE. 
                         The initial altitude at which such ascending ILs were observed was 
                         higher than their normal height near sunset. Additionally, the 
                         eastward prompt penetration electric fields (PPEFs) during weak 
                         magnetic storms can also contribute to the ILs rise. An 
                         interesting case of uplift of a sporadic-E layer from \∼120 
                         to 290 km probably due to the PPEF is also investigated.",
                  doi = "10.1029/2020JA028429",
                  url = "http://dx.doi.org/10.1029/2020JA028429",
                 issn = "2169-9402",
             language = "en",
           targetfile = "santos_fregion.pdf",
        urlaccessdate = "09 maio 2024"
}