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@InProceedings{AbduSanSouBatSob:2017:EqPlBu,
               author = "Abdu, Manga{\c{c}}athayil Ali and Santos, A. M. and Souza, Jonas 
                         Rodrigues de and Batista, Inez Staciarini and Sobral, Jos{\'e} 
                         Humberto Andrade",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Equatorial plasma bubble development and dynamics, and sporadic E 
                         layer structuring, under disturbance electric fields",
                 year = "2017",
         organization = "International Congress of the Brazilian Geophysical Sociey, 15.",
             keywords = "Low latitude ionosphere, Plasma bubbles, Penetration electric 
                         fields, Sporadic E layers.",
             abstract = "Disturbance electric field during space weather events can cause 
                         severe modifications in the Equatorial and low - midlatitude 
                         ionospheric plasma dynamics and related phenomenology. Penetration 
                         electric fields, of undershielding or over-shielding types, and 
                         disturbance dynamo electric field can cause anomalous development 
                         of plasma bubbles even during their non-occurrence season, or can 
                         lead to suppression of their normal development. These effects are 
                         dependent on the local time and longitude of the observations. 
                         Large changes in the Hall and Pedersen conductivities can occur 
                         due to storm induced extra E layer ionization or modifications in 
                         F layer plasma density, as a result of which the penetration 
                         electric fields may produce, among other effects, (1) plasma 
                         bubble zonal drift velocity reversal to westward, (2) 
                         large/abnormal F layer plasma uplift, (3) sporadic E layer 
                         disruption or its formation with instabilities. Beside these 
                         effects, the equatorial ionization anomaly is known to suffer 
                         latitudinal expansion and retraction. In this paper we will 
                         discuss some outstanding response features of the low altitude 
                         ionosphere under disturbance electric field as diagnosed by 
                         Digisondes, radars and optical imagers in the South American 
                         longitude sector, a region that is strongly influenced by the 
                         South Atlantic Magnetic anomaly (SAMA). The results will be 
                         compared and discussed with satellite observations (DMSP and 
                         C/NOFS) and modeling results based on SUPIM simulation of a 
                         realistic low latitude ionosphere.",
  conference-location = "Rio de Janeiro, RJ",
      conference-year = "31 jul. - 03 ago.",
             language = "en",
           targetfile = "abdu_equatorial.pdf",
        urlaccessdate = "25 nov. 2020"
}


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