@Article{FagundesSahaBittTaka:1996:PlDrIn,
               author = "Fagundes, Paulo Roberto and Sahai, Yogeshwar and Bittencourt, 
                         Jos{\'e} Augusto and Takahashi, Hisao",
                title = "Plasma drifts inferred from thermospheric neutral winds and 
                         temperature gradienta observed at low latitude",
              journal = "EOS Transactions",
                 year = "1996",
               volume = "58",
               number = "11",
                pages = "1219--1228",
             keywords = "AERONOMIA, TERMOSFERA, PALSMA IONOSFERICO, IONOSFERA, TEMPERATURA 
                         DOPPLER, INTERFEROMETRO FABRY-PEROT.",
             abstract = "Low-latitude plasma drifts (zonal and meridional) in the F-region 
                         are inferred from the observed night-time thermospheric neutral 
                         wind velocities and temperature gradients, together with models 
                         for the neutral density (MSIS-86 model) and the electron density 
                         (IRI model). The thermospheric neutral winds and temperatures are 
                         derived from measurements of Doppler shifts and widths of the 
                         01630.0 nm airglow emission line, respectively, using a 
                         Fabry-Perot interferometer at Cachoeira Paulista (23 degree S, 45 
                         degree W), Brazil. The equations considered are the ideal gas law 
                         and the momentum equation for the thermosphere, which includes the 
                         time variation of the neutral wind, the pressure gradient which is 
                         related to the temperature and density gradients and the ion drag 
                         force. The present method to infer the night-time plasma drift 
                         using observed neutral parameters (6me variation of neutral wind 
                         velocities and temperature gradient) showed results 29 am in 
                         reasonable agreement with our calculated plasma drifts and those 
                         observed in other low-latitude locations. On the other hand, it is 
                         surprising that sometimes the winds flow from the observed coldest 
                         sector to the hottest part of the thermosphere during many hours, 
                         suggesting that plasma drift can drive the neutral winds at low 
                         latitudes for a period of time.",
                 issn = "2324-9250",
                label = "8718",
           targetfile = "1996_fagundes.pdf",
        urlaccessdate = "2025, Feb. 14"
}