Mostrar el registro sencillo del ítem De Paula, E. R. Souza, J. R. Fejer, B. G. Bailey, G. J. Heelis, R. A. 2018-06-28T18:37:52Z 2018-06-28T18:37:52Z 2002-07-10
dc.identifier.citation De Paula, E. R., Souza, J. R., Fejer, B. G., Bailey, G. J., & Heelis, R. A. (2002). Longitudinal ionospheric effects in the South Atlantic evening sector during solar maximum.==$Journal of Geophysical Research: Space Physics, 107$==(A7). es_ES
dc.description.abstract Large-scale horizontal gradients in ion density and vertical drift observed by the Atmospheric Explorer E satellite in the South Atlantic region (latitudes 10S–20S, longitudes 50W–10E) during the June solstice at solar maximum are presented and analyzed. These features occur during the nighttime period. The observations near 450-km altitude show vertically downward ion drift velocities exceeding 120 m s−1 and depleted regions where the ion density is around 2 × 104 cm−3. It is shown, using values modeled by the Sheffield University Plasmasphere Ionosphere Model (SUPIM) along the satellite trajectory, that the large ion density depletions appear as a result of large downward ion drifts driven by large southward winds along the magnetic meridian and by diffusion. During others seasons such behavior is not observed by the AE-E satellite, neither by SUPIM results. The roles played by the different physical processes responsible for the large downward drift velocities are investigated. The model results highlight the relationship between longitudinal variation of the ion densities and the location of the equatorial anomaly crest in the South Atlantic region. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Equatorial ionosphere es_ES
dc.subject Vertical plasma drifts es_ES
dc.subject Meridional wind es_ES
dc.subject Ionic density|Iionospheric modeling es_ES
dc.title Longitudinal ionospheric effects in the South Atlantic evening sector during solar maximum es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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