Mostrar el registro sencillo del ítem Varney, Roger H. Kelley, Michael C. Kudeki, Erhan 2018-11-05T12:41:29Z 2018-11-05T12:41:29Z 2009-02-07
dc.identifier.issn 2169-9402
dc.description.abstract "At the Jicamarca Radio Observatory, the vertical drift component yields a very accurate measure of the eastward electric field. Occasionally, this drift component displays a downward phase progression, evidence for a relationship to a gravity wave. We examined the Jicamarca database for events of this type and made an attempt to determine the properties of the associated waves. The only measurables we have are the amplitudes, the frequency in the Earth‐fixed frame, and the vertical wavelength. In order to avoid shorting by the current along magnetic field lines, we argue that the propagation must be close to pure zonal. We then use measurements or models of the zonal plasma drift and argue that the zonal wind should be in the same direction and about 15% higher. Using this estimate, we then determine the frequency in the wind frame by solving the dispersion relation for gravity waves and the Doppler‐shift equation simultaneously. Typical values for the horizontal wavelength, vertical wavelength, and period in the wind frame are 600 km, 350 km, and 25 min, respectively. The typical gravity wave‐induced vertical drift perpendicular to B in these events is a few meters per second. This is marginal at best for seeding the Rayleigh‐Taylor instability. However, larger‐amplitude events may be masked by the development of the plumes themselves. All but two events found thus far occurred at night but the daytime cases are fascinating since the E region is expected to short out such fields". es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Journal of Geophysical Research: Space Physics es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.rights.uri es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Campos eléctricos es_ES
dc.subject Ondas gravitatorias es_ES
dc.subject Radio Observatorio de Jicamarca es_ES
dc.subject Radar--Perú--Mediciones es_ES
dc.subject Plasma (Gases ionizados) es_ES
dc.subject Inestabilidades del plasma es_ES
dc.subject Ionósfera--Mediciones es_ES
dc.subject Ionósfera--Observaciones es_ES
dc.subject Vientos zonales es_ES
dc.subject Efecto Doppler es_ES
dc.title Observations of electric fields associated with internal gravity waves es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Atmósfera es_ES
dc.subject.ocde Observación es_ES
dc.subject.ocde Radar es_ES
dc.subject.ocde Medición es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Geofísica es_ES
dc.subject.ocde Ciencias espaciales es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1029/2008JA013733 es_ES




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