@InProceedings{CandidoBatiRese:2018:IoReRe,
               author = "Candido, Cl{\'a}udia Maria Nicoli and Batista, Inez Staciarini 
                         and Resende, Laysa Cristina Ara{\'u}jo",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Ionospheric response to a recurrent magnetic storm during an event 
                         of High Speed Stream in October 2016",
                 year = "2018",
         organization = "Latin American Conference on Space Geophysics, 11. (COLAGE)",
             abstract = "In this work we investigate the response of the low latitude 
                         ionosphere to recurrent geomagnetic activity caused by events of 
                         High speed streams (HSSs)/Corotating Interaction Regions (CIRs) 
                         during the low descending phase of solar activity in the solar 
                         cycle 24. Intense magnetic field regions called Corotating 
                         Interaction Regions or CIRs are created by the interaction of fast 
                         streams and slow streams ejected by long duration coronal holes in 
                         Sun. This interaction leads to an increase in the mean 
                         interplanetary magnetic field (IMF) which causes moderate and 
                         recurrent geomagnetic activity when interacts with the Earths 
                         magnetosphere. The ionosphere can be affected by these phenomena 
                         by several ways, such as an increase (or decrease) of the plasma 
                         ionization, intensification of plasma instabilities during 
                         post-sunset/post-midnight hours and subsequent development of 
                         plasma irregularities/spreadF, as well as occurrence of plasma 
                         scintillation. Therefore, we investigate the low latitude 
                         ionospheric response during moderate geomagnetic storm associated 
                         to an event of High Speed Stream occurred during decreasing phase 
                         of solar activity in 2016. An additional ionization increasing is 
                         observed in Es layer during the main peak of the geomagnetic 
                         storm. We investigate two possible different mechanisms that 
                         caused these extras ionization: the role of prompt penetration of 
                         interplanetary electric field, IEFEy at equatorial region, and the 
                         energetic electrons precipitation on the E and F layers 
                         variations. Finally, we used data from Digisondes installed at 
                         equatorial region, Sao LuŽ\ıs, and at conjugate points in 
                         Brazilian latitudes, Boa Vista and Cachoeira Paulista. We analyzed 
                         the ionospheric parameters such as the critical frequency of F 
                         layer, foF2, the F layer peak height, hmF2, the F layer 
                         bottomside, hF, the blanketing frequency of sporadic layer, fbEs, 
                         the virtual height of Es layer hEs and the top frequency of the Es 
                         layer ftEs during this event.",
  conference-location = "Buenos Aires, Argentina",
      conference-year = "16-20 abr.",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}