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dc.contributor.author Lu, G.
dc.contributor.author Goncharenko, L.
dc.contributor.author Nicolls, M. J.
dc.contributor.author Maute, A.
dc.contributor.author Coster, A.
dc.contributor.author Paxton, L. J.
dc.date.accessioned 2018-11-08T11:28:42Z
dc.date.available 2018-11-08T11:28:42Z
dc.date.issued 2012-08-10
dc.identifier.issn 2169-9402
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/3417
dc.description.abstract "This paper presents a comprehensive modeling investigation of ionospheric and thermospheric variations during a prompt penetration electric field (PPEF) event that took place on 9 November 2004, using the Thermosphere‐Ionosphere‐Mesosphere Electrodynamic General Circulation Model (TIMEGCM). The simulation results reveal complex latitudinal and longitudinal/local‐time variations in vertical ion drift in the middle‐ and low‐latitude regions owing to the competing influences of electric fields and neutral winds. It is found that electric fields are the dominant driver of vertical ion drift at the magnetic equator; at midlatitudes, however, vertical ion drift driven by disturbance meridional winds exceeds that driven by electric fields. The temporal evolution of the UT‐latitude electron density profile from the simulation depicts clearly a super‐fountain effect caused by the PPEF, including the initial slow‐rise of the equatorial F‐layer peak height, the split of the F‐layer peak density, and the subsequent downward diffusion of the density peaks along magnetic field lines. Correspondingly, low‐latitude total electron content (TEC) becomes bifurcated around the magnetic equator. The O/N2column density ratio, on the other hand, shows very little variations during this PPEF event, excluding composition change as a potential mechanism for the TEC variations. By using realistic, time‐dependent, high‐latitude electric potential and auroral precipitation patterns to drive the TIMEGCM, the model is able to successfully reproduce the large vertical ion drift of ∼120 m/s over the Jicamarca incoherent radar (IS) in Peru, which is the largest daytime ion drift ever recorded by the radar. The simulation results are validated with several key observations from IS radars, ground GPS‐TEC network, and the TIMED‐GUVI O/N2column density ratio. The model‐data intercomparison also reveals some deficiencies in the TIMEGCM, particularly the limitations imposed by its upper boundary height as well as the prescribed O+ flux". 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 http://creativecommons.org/licences/restrictedAccess es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Ionósfera--Observaciones es_ES
dc.subject Ionósfera--Mediciones es_ES
dc.subject Ionósfera--Investigación es_ES
dc.subject Campos eléctricos es_ES
dc.subject Deriva ionosférica es_ES
dc.subject Densidad de electrones ionosféricos es_ES
dc.subject Región F es_ES
dc.subject Campos magnéticos es_ES
dc.subject Latitud es_ES
dc.subject Radar de dispersión incoherente es_ES
dc.subject Radar--Observaciones es_ES
dc.subject Radar--Mediciones es_ES
dc.subject Física atmosférica es_ES
dc.subject Termósfera es_ES
dc.title Ionospheric and thermospheric variations associated with prompt penetration electric fields 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 Simulación es_ES
dc.subject.ocde Modelos 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.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1029/2012JA017769 es_ES

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