@Article{PicançoDNBRCCMRS:2021:EqIoRe,
               author = "Pican{\c{c}}o, Giorgio Arlan da Silva and Denardini, Clezio 
                         Marcos and Nogueira, P. A. B. and Barbosa Neto, Paulo 
                         Fran{\c{c}}a and Resende, Laysa Cristina Ara{\'u}jo and Chen, 
                         Sony Su and Carmo, Carolina de Sousa do and Moro, Juliano and 
                         Romero-Hernandez, E. and Silva, R. P.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and Instituto Federal de 
                         Educa{\c{c}}{\~a}o, Ci{\^e}ncia e Tecnologia de S{\~a}o Paulo 
                         (IFSP) 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)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidad Aut{\'o}noma de Nuevo Leon} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Equatorial ionospheric response to storm-time electric fields 
                         during two intense geomagnetic storms over the Brazilian region 
                         using a Disturbance Ionosphere indeX",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2021",
               volume = "223",
                pages = "e105734",
                month = "Oct.",
             keywords = "Disturbed electric fields, DIX, Geomagnetic storms, TEC.",
             abstract = "In this work, we use a new version of the Disturbance Ionosphere 
                         Index (DIX) to evaluate ionospheric disturbances over the 
                         Brazilian region during two intense geomagnetic storms (22 June 
                         2015 and St. Patrick's Day storm). The DIX values were obtained 
                         from the deviation of Total Electron Content (TEC) data acquired 
                         during the geomagnetically disturbed days in relation to a 
                         non-perturbed TEC reference to provide a single and dimensionless 
                         value of the ionospheric degree of perturbation during the 
                         magnetic events. Moreover, we used F-layer parameters (foF2 and 
                         h'F) measured by ionosondes to identify the ionospheric impacts of 
                         storm-time electric fields observed as perturbations in the DIX. 
                         Our results show that the geomagnetic storms caused large 
                         perturbations in the ionosphere as observed by increases/decreases 
                         in the TEC over different latitudinal sectors, which were also 
                         observed in the foF2, h'F, and DIX values. Therefore, the DIX has 
                         shown to be a useful parameter for observing the ionospheric 
                         impact under prompt penetration and disturbance dynamo electric 
                         field events, as well as to ionospheric disturbances related to 
                         the pre-storm period. Finally, from those observations, we found 
                         that the DIX resembles the ionosonde measurements, and that it is 
                         consistent with the physical processes that occurred during each 
                         phase of the geomagnetic storms.",
                  doi = "10.1016/j.jastp.2021.105734",
                  url = "http://dx.doi.org/10.1016/j.jastp.2021.105734",
                 issn = "1364-6826",
             language = "en",
           targetfile = "picanco_equatorial.pdf",
        urlaccessdate = "05 maio 2024"
}