@Article{AbreuCJVMRFG:2023:StAnIo,
               author = "Abreu, Alessandro Jos{\'e} de and Correia, Em{\'{\i}}lia and 
                         Jesus, Rodolfo de and Venkatesh, K. and Macho, E. P. and Roberto, 
                         M. and Fagundes, P. R. and Gende, M.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and Physical Research Laboratory, 
                         Navrangpura and {Universidade Presbiteriana Mackenzie} and 
                         {Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and 
                         {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and 
                         {Universidad Nacional de La Plata (UNLP)}",
                title = "Statistical analysis on the ionospheric response over South 
                         American mid- and near high-latitudes during 70 intense 
                         geomagnetic storms occurred in the period of two decades",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2023",
               volume = "245",
                pages = "e106060",
                month = "Apr.",
             keywords = "Antarctic sector, Geomagnetic storm, GPS-TEC, Ionosphere.",
             abstract = "The first-time statistical response of the positive and negative 
                         ionospheric storms phases using Vertical Total Electron Content 
                         (VTEC) measurements during 70 geomagnetic storms at near high- and 
                         mid-latitudes regions in the Antarctic and Argentine/Chilean 
                         sectors in the Southern hemisphere are investigated. The study 
                         covers the years between 1999 and 2018 of solar cycles 23 and 24, 
                         using the Dst \≤ \−100 nT as a criterion for all 70 
                         storms selected. Significant features of solar cycle, seasonal and 
                         local time of ionospheric storms are showed. Our results indicate 
                         that the occurrence of geomagnetic storms follows a pattern of 
                         solar activity dependence, and also indicate a predominance of 
                         positive and positive-negative phases during autumn, winter, and 
                         spring at mid-latitudes and winter at near high-latitudes. 
                         Negative and negative-positive phases occur during all seasons at 
                         near high- and mid-latitudes. In addition, positive phases occur 
                         more frequently during the daytime while the negative phases occur 
                         predominantly in nighttime. There is also a predominance of 
                         positive and positive-negative phases simultaneously at near high- 
                         and mid-latitudes in the Antarctic and Argentine/Chilean sectors. 
                         The percentages of occurrence of positive and positive-negative 
                         phases are of 50% and 19%, respectively, at mid-latitude and 60% 
                         and 22%, respectively, at near high-latitudes. Negative and 
                         negative-positive phases are below 9% at both latitudes.",
                  doi = "10.1016/j.jastp.2023.106060",
                  url = "http://dx.doi.org/10.1016/j.jastp.2023.106060",
                 issn = "1364-6826",
             language = "en",
           targetfile = "1-s2.0-S1364682623000585-main.pdf",
        urlaccessdate = "20 maio 2024"
}