Mostrar el registro sencillo del ítem Kelley, M Larsen, M La Hoz, C McClure, J 2018-07-04T15:32:15Z 2018-07-04T15:32:15Z 1981-10-01
dc.identifier.citation Kelley, M., Larsen, M., La Hoz, C., & McClure, J. (1981). Gravity wave initiation of equatorial Spread F: A case study.==$Journal of Geophysical Research: Space Physics, 86$==(A11), 9087-9100. es_ES
dc.description.abstract Jicamarca radar backscatter maps were made during four consecutive nights in March 1979. Two of these maps displayed single towering plumes extending to nearly 1000-km altitude. On a third night, discussed in detail here, six plumes were generated in clear association with a nearly sinusoidal oscillation of the height of the bottomside of the F layer. The vertical amplitude of the oscillation was several hundred kilometers, and the period about 100 minutes. The plumes were generated either when the bottomside of the F layer was at the highest altitude or in the descending phase of the motion. Families of curves are presented which correspond to the solution of the dispersion relation for gravity waves capable of initiating the observed bottomside oscillations via the spatial resonance mechanism. We conclude that the solutions thus derived are reasonable and present a criterion for how well matched the gravity wave phase velocity and plasma drift have to be to produce a given perturbation in the ionization density. This criterion indicates that although initiation by a gravity wave seems likely, the gravity wave interaction cannot yield the large displacements observed without further amplification by the Rayleigh-Taylor instability. Finally, we show that the preferential generation of plumes during the descending phase of the F layer height oscillation can be explained by a generalized Rayleigh-Taylor instability operating on the distorted ionosphere with the destabilizing effects of gravity, a zonal electric field, and a zonal neutral wind included. 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 Gravitational waves es_ES
dc.subject Plasma es_ES
dc.subject Electric fields es_ES
dc.subject Radar es_ES
dc.subject Ionosphere es_ES
dc.subject Incoherent Scatter Radar es_ES
dc.title Gravity wave initiation of equatorial Spread F: A case study 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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