Mostrar el registro sencillo del ítem Valladares, C. E. Sheehan, R. Basu, S. Kuenzler, H. Espinoza, J. 2018-06-28T14:45:21Z 2018-06-28T14:45:21Z 1996-12-01
dc.identifier.citation Valladares, C. E., Sheehan, R., Basu, S., Kuenzler, H., & Espinoza, J. (1996). The multi‐instrumented studies of equatorial thermosphere aeronomy scintillation system: Climatology of zonal drifts.==$Journal of Geophysical Research: Space Physics, 101$==(A12), 26839-26850. es_ES
dc.description.abstract A spaced-antenna scintillation system was installed at Ancon, Peru, in May 1994 to measure scintillation of 250-MHz signals from a geostationary satellite by three antennas spaced in the magnetic east-west direction. These measurements were used to establish the climatology of the zonal drift of the irregularities which cause equatorial scintillations. The major objective of this study is to compare this drift climatology to the climatology of zonal neutral wind which is the driver of the equatorial electrodynamics. A comparison of these two climatologies in conjunction with scintillation statistics may provide some clues regarding factors which help or hinder the formation of equatorial spread-F (ESF). With these objectives in mind, the first year's drift and scintillation statistics have been presented as a function of local time, season and magnetic activity and compared with the statistics of ion drift published earlier from incoherent scatter radar observations. The scintillation drift is in good agreement with the Jicamarca radar observations except for the fact that the local time dependence of our drift observations exhibit a broader maximum. The broad maximum may be attributed to lower ion drag experienced in the presence of ESF due to sustained uplifting of the ionosphere. During magnetically active periods, the scintillation drift often exhibits east to west reversals presumably because of the disturbance dynamo effects. The westward drifts during such reversals may be as large as 100 m/s. We have also modeled the zonal drifts as a seasonal basis by using Hedin's neutral wind model and Anderson's fully analytical ionospheric model. The modeled zonal drifts present good quantitative agreement with the drifts obtained with the scintillation technique. 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 Scintillation es_ES
dc.subject Thermosphere es_ES
dc.subject Artificial satellites es_ES
dc.subject Winds es_ES
dc.subject F region es_ES
dc.subject Incoherent scattering radar es_ES
dc.subject Ionosphere es_ES
dc.title The multi‐instrumented studies of equatorial thermosphere aeronomy scintillation system: Climatology of zonal drifts 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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