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dc.contributor.author Fejer, B. G.
dc.contributor.author Farley, D. T.
dc.contributor.author Woodman Pollitt, Ronald Francisco
dc.contributor.author Calderón, C.
dc.date.accessioned 2018-07-04T14:46:21Z
dc.date.available 2018-07-04T14:46:21Z
dc.date.issued 1979-10-01
dc.identifier.citation Fejer, B. G., Farley, D. T., Woodman, R. F. & Calderón, C. (1979). Dependence of equatorial F region vertical drifts on season and solar cycle.==$Journal of Geophysical Research: Space Physics, 84$==(A10), 5792-5794. https://doi.org/10.1029/JA084iA10p05792 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/1677
dc.description.abstract Vertical drift measurements have been made at Jicamarca for more than half a solar cycle. The data from periods of high and low activity are appreciably different. Daytime drift velocities during sunspot minimum are usually larger than during the maximum, while the opposite is true for nighttime periods. The evening reversal occurs earlier during sunspot minimum than during the maximum, but the morning reversal is not altered. The period of eastward electric field (upward drift) is thus shortest during sunspot minimum and local winter. By integrating the drift velocity data with respect to time, one can obtain a measure of the total potential drop between reversal points (near the terminators). This drop is largest at solar maximum. There is also a pronounced seasonal variation, with a minimum in mid-December during both solar minimum and maximum. The general features of the data cannot be explained solely on the basis of tidal winds driving an E region dynamo; polarization fields related to the F region dynamo are of major importance, particularly in helping to explain the enhancement of the daytime upward drift which often occurs shortly before the drift reverses to downward in the evening. In order to account quantitatively for the observed variations, however, numerical models considerably more sophisticated than those presently available are needed. 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 Ionosphere es_ES
dc.subject Seasonal Variation es_ES
dc.subject Electric Fields es_ES
dc.title Dependence of equatorial F region vertical drifts on season and solar cycle 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/JA084iA10p05792 es_ES

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