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dc.contributor.author Oyekola, Oyedemi S.
dc.date.accessioned 2018-10-26T14:55:52Z
dc.date.available 2018-10-26T14:55:52Z
dc.date.issued 2006-11-23
dc.identifier.citation Oyekola, O. S. (2006). Comparison between nighttime ionosonde, incoherent scatter radar, AE‐E satellite, and HF Doppler observations of F region vertical electrodynamic plasma drifts in the vicinity of the magnetic equator.==$Journal of Geophysical Research: Space Physics, 111$==(A11), A11318. https://doi.org/10.1029/2006JA011844 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3168
dc.description.abstract Nighttime F region vertical drifts were made using an ionosonde for the equatorial station Ibadan (7.4°N, 3.9°E, 6°S dip) from 1 year of data during 1957–1958 International Geophysical Year (IGY) that corresponds to a period of solar maximum for undisturbed condition. We compare the seasonal vertical drifts with measurements made by incoherent scatter radar, AE‐E satellite, and HF Doppler for equatorial F region vertical drifts. We find a comparable variability pattern during periods of high F layer heights during equinox and the December solstice, and the opposite behavior occurs during June solstice. The drifts are predominantly downward between 2000 and 0500 LT intervals. Ionosonde drifts are smaller in values by either a factor of two or three than other methods, except for consistent June solstice ionosonde and satellite magnitudes. The equinoctial average prereversal enhancements measured by the four techniques are roughly comparable (about 36 m/s) and occur at the same local time (1900 LT) for all the seasons. The evening reversal times are similar, apart from June solstice that exhibits large variations. The morning reversal times are also in accord except for the equinoctial Jicamarca drift. Our observations indicate that ionosonde drifts measurements are in better agreement with vertical drifts results at other equatorial stations. 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 Ionospheric variability es_ES
dc.subject Measurement techniques es_ES
dc.subject Nighttime F region es_ES
dc.subject Plasma drifts es_ES
dc.title Comparison between nighttime ionosonde, incoherent scatter radar, AE‐E satellite, and HF Doppler observations of F region vertical electrodynamic plasma drifts in the vicinity of the magnetic equator es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1029/2006JA011844 es_ES

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