@Article{Becker-GuedesSaFaLiPiAbBi:2004:GeStEq,
               author = "Becker-Guedes, F. and Sahai, Y. and Fagundes, P. R. and Lima, W. 
                         L. C. and Pillat, V. G. and Abalde, Jos{\'e} Ricardo and 
                         Bittencourt, Jos{\'e} Augusto",
          affiliation = "Universidade do Vale do Paraiba (UNIVAP), 12244-000 Sao Jose dos 
                         Campos, SP, Brazil and Centro Universitario Luterano de Palmas 
                         (CEULP), Universidade Luterana do Brasil (ULBRA), 77054-970 
                         Palmas, TO and Brazil",
                title = "Geomagnetic storm and equatorial spread-F",
              journal = "Annales Geophysicae",
                 year = "2004",
               volume = "22",
               number = "9",
                pages = "3231--3239",
             keywords = "Region plasma depletions, electric, field, low latitudes, 
                         disturbances, generation, bubbles, drift, irregularities, 
                         ionosphere, evolution.",
             abstract = "In August 2000, a new ionospheric sounding station was established 
                         at Sao Jose dos Campos (23.2º S, 45.9ºW; dip latitude 17.6º S), 
                         Brazil, by the University of Vale do Paraiba (UNIVAP). Another 
                         ionospheric sounding station was established at Palmas (10.2º S, 
                         48.2ºW; dip latitude 5.5º S), Brazil, in April 2002, by UNIVAP in 
                         collaboration with the Lutheran University Center of Palmas 
                         (CEULP), Lutheran University of Brazil (ULBRA). Both the stations 
                         are equipped with digital ionosonde of the type known as Canadian 
                         Advanced Digital Ionosonde (CADI). In order to study the effects 
                         of geomagnetic storms on equatorial spread-F, we present and 
                         discuss three case studies, two from the ionospheric sounding 
                         observations at Sao Jose dos Campos (September and November 2000) 
                         and one from the simultaneous ionospheric sounding observations at 
                         Sao Jose dos Campos and Palmas (July 2003). Salient features from 
                         these ionospheric observations are presented and discussed in this 
                         paper. It has been observed that sometimes (e.g. 45 November 2000) 
                         the geomagnetic storm acts as an inhibitor (high strong spread-F 
                         season), whereas at other times (e.g. 1112 July 2003) they act as 
                         an initiator (low strong spread- F season), possibly due to 
                         corresponding changes in the quiet and disturbed drift patterns 
                         during different seasons.",
           copyholder = "SID/SCD",
                 issn = "0992-7689",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
           targetfile = "ag-22-3231.pdf",
        urlaccessdate = "29 jun. 2024"
}