@Article{CarrascoBatiAbdu:2014:COCa,
               author = "Carrasco, A. J. and Batista, Inez Staciarini and Abdu, 
                         Mangalathayil Ali",
          affiliation = "{Universidad de Los Andes (ULA)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Numerical simulation of equatorial plasma bubbles over Cachimbo: 
                         COPEX campaign",
              journal = "Advances in Space Research",
                 year = "2014",
               volume = "54",
               number = "3",
                pages = "443--455",
             keywords = "Codes (symbols), Computer simulation, Electric fields, F region, 
                         Geophysics, Ionospheric measurement, Numerical models, Plasmas, 
                         Conjugate points, Equatorial ionosphere, Equatorial plasma bubble, 
                         Flux corrected transports, Ionospheric irregularities, Plasma 
                         bubble, Predictor-corrector methods, Vertical electric fields, 
                         Plasma diagnostics.",
             abstract = "The problem of day-to-day variability in onset of equatorial 
                         spread F (ESF) is addressed using data from the 2002 COPEX 
                         observational campaign in Brazil and numerical modeling. The 
                         observational results show that for values of virtual height of 
                         the F layer base less than 355 km at around 18:35 LT, and for the 
                         prereversal peak enhancement of the vertical plasma drift (Vp) 
                         less than 30 m/s, the spread-F (ESF) was absent on four nights 
                         over Cachimbo (9.5°S, 54.8°W, dip latitude = -2.1°). In this work 
                         we analyze the geophysical conditions for the generation of the 
                         irregularities by comparing the nights with and without the ESF. 
                         In the comparison a numerical code is used to simulate plasma 
                         irregularity development in an extended altitude range from the 
                         bottom of the equatorial F layer. The code uses the flux corrected 
                         transport method with Boris-Book's flux limiter for the spatial 
                         integration and a predictor-corrector method for the direct time 
                         integration of the continuity equation for O+ and the SOR 
                         (Successive-Over-Relaxation) method for electric potential 
                         equation. The code is tested with different evening eastward 
                         electric fields (or vertical drifts Vp < 30 m/s and Vp > 30 m/s) 
                         in order to study the influence of the prereversal enhancement in 
                         the zonal electric field on plasma bubble formation and 
                         development. The code also takes into account the zonal wind, the 
                         vertical electric field and the collision frequency of ions with 
                         neutrals and the amplitude of initial perturbation. The simulation 
                         shows a good agreement with the observational results of the ESF. 
                         The results of the code suggest that the instability can grow at 
                         the F layer bottomside by the Rayleigh-Taylor mechanism only when 
                         the Vp > 30 m/s. In the analyzed cases we have considered the 
                         competition of other geophysical parameters in the generation of 
                         plasma structures.",
                  doi = "10.1016/j.asr.2013.10.017",
                  url = "http://dx.doi.org/10.1016/j.asr.2013.10.017",
                 issn = "0273-1177 and 1879-1948",
                label = "scopus 2014-11 CarrascoBatiAbdu:2014:COCa",
             language = "en",
           targetfile = "Carrasco_Numerical.pdf",
        urlaccessdate = "15 jun. 2024"
}