@Article{MedeirosAbduKant:1983:CoStVH,
               author = "Medeiros, Rui Tertuliano and Abdu, Mangalatyil Ali and Kantor, 
                         Ivan Jelinek",
                title = "A comparative study of VHF scintillation and spread F events over 
                         Natal and Fortaleza in Brazil",
              journal = "Journal of Geophysical Research",
                 year = "1983",
               volume = "88",
               number = "A8",
                pages = "6253--6258",
                month = "Aug.",
             keywords = "AERONOMIA, propaga{\c{c}}{\~a}o, cintila{\c{c}}{\~a}o, 
                         atmosfera equatorial, pblha de plasma, disturbios 
                         ionosf{\'e}ricos, spread F, scintillation, equatorial atmosphere, 
                         plasma bubble, ionospheric disturbances.",
             abstract = "A comparative study is carried out of the equatorial ionospheric 
                         irregularity occurrences, as observed by range spread F events 
                         over Fortaleza (4 degree S, 38 degree W, dip latitude 1.8 
                         degree)and satellite VHF signal scintillation event over Natal 
                         (5.8 degree S, 33.23 degree W, dip latitude 4.8 degree S)for a 
                         one-year period 1978. Close association is observed in the 
                         occurrences and the durations of the irregularities at the two 
                         stations. Marked differences in the seasonal behavior of the 
                         occurrences of the irregularity events over these two stations are 
                         noted with respect to that over Huancayo, most important of them 
                         being that while the latter station presents equinoctial maxima in 
                         the occurrence rates (as over some African stations), the 
                         Brazilian stations show an additional and pronounced peak in 
                         December. This result is explained as possible evidence of 
                         magnetic declination control of the spread F irregularity 
                         generation and its seasonal dependence. The present results have 
                         important implications also on the coexistence of different 
                         irregularity scale sizes during equatorial plasma bubble 
                         irregularity events.",
                 issn = "0148-0227 and 2156-2202",
                label = "2270",
           targetfile = "INPE-2469.pdf",
        urlaccessdate = "01 maio 2024"
}