Mostrar el registro sencillo del ítem Chakrabarty, D. Hui, Debrup Rout, Diptiranjan Sekar, R. Bhattacharyya, Archana Reeves, G. D. Ruohoniemi, J. M. 2018-11-21T15:33:16Z 2018-11-21T15:33:16Z 2017-02-04
dc.identifier.issn 2169-9402
dc.description.abstract "On 7 January 2005 (Ap=40) prompt penetration electric field perturbations of opposite polarities were observed over Thumba and Jicamarca on a few occasions during 13:45–16:30 UT. However, the electric field was found to be eastward during 14:45–15:30 UT over both Thumba and Jicamarca contrary to the general expectation wherein opposite polarities are expected at nearly antipodal points. On closer scrutiny, three important observational features are noticed during 14:10–15:15 UT. First, during 14:10–14:45 UT, despite increasing southward interplanetary magnetic field (IMF) Bz condition, the already westward electric field over Thumba weakened (less westward) while the eastward electric field over Jicamarca intensified (more eastward). Second, the electric field not only became anomalously eastward over Thumba but also got intensified further during 14:45–15:00 UT similar to Jicamarca. Third, during 15:00–15:15 UT, despite IMF Bz remaining steadily southward, the eastward electric field continued to intensify over Thumba but weakened over Jicamarca. It is suggested that the changes in IMF By component under southward IMF Bz condition are responsible for skewing the ionospheric equipotential patterns over the dip equator in such a way that Thumba came into the same DP2 cell as that of Jicamarca leading to anomalous electric field variations. Magnetic field measurements along the Indian and Jicamarca longitude sectors and changes in high‐latitude ionospheric convection patterns provide credence to this proposition. Thus, the present investigation shows that the variations in IMF By are fundamentally important to understand the prompt penetration effects over low latitudes". 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 Ionósfera--Observaciones es_ES
dc.subject Ionósfera--Investigación es_ES
dc.subject Clima espacial es_ES
dc.subject Campos magnéticos interplanetarios es_ES
dc.subject Campos magnéticos es_ES
dc.subject Radar coherente es_ES
dc.subject Radar--Perú--Observaciones es_ES
dc.subject Radio Observatorio de Jicamarca es_ES
dc.subject Plasma (Gases ionizados) es_ES
dc.subject Física atmosférica es_ES
dc.title Role of IMF By in the prompt electric field disturbances over equatorial ionosphere during a space weather event 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 India 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 10.1002/2016JA022781 es_ES




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