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dc.contributor.author Goncharenko, L.P.
dc.contributor.author Salah, J.E.
dc.contributor.author Howells, V.
dc.contributor.author Thayer, J.P.
dc.contributor.author Taran, V.L.
dc.contributor.author Shpynev, B.
dc.contributor.author Zhou, Q.
dc.contributor.author Eyken, A. van
dc.contributor.author Taran, V. I.
dc.contributor.author Chau Chong Shing, Jorge Luis
dc.date.accessioned 2018-07-16T14:15:00Z
dc.date.available 2018-07-16T14:15:00Z
dc.date.issued 2005-01
dc.identifier.issn 1432-0576
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/1872
dc.description En: Annales Geophysicae, v. 23, n. 1 (January 2005), p. 163-181. es_ES
dc.description.abstract "This paper describes the ionospheric response to a geomagnetic storm beginning on 17 April 2002. We present the measurements of ionospheric parameters in the F-region obtained by the network of eight incoherent scatter radars. The main effects of this storm include a deep decrease in the electron density observed at high and middle latitudes in the pre-noon sector, and a minor enhancement in the density observed in the daytime sector at middle latitudes. Extreme plasma heating (>1000-3000 K) is observed at high latitudes, subsiding to 200-300K at subauroral latitudes. The western hemisphere radar chain observed the prompt penetration of the electric field from auroral to equatorial latitudes, as well as the daytime enhancement of plasma drift parallel to the magnetic field line, which is related to the enhancement in the equatorward winds. We suggest that in the first several hours after the storm onset, a negative phase above Millstone Hill (pre-noon sector) results from counteracting processes - penetration electric field, meridional wind, and electrodynamic heating, with electrodynamic heating being the dominant mechanism. At the lower latitude in the pre-noon sector (Arecibo and Jicamarca), the penetration electric field becomes more important, leading to a negative storm phase over Arecibo. In contrast, in the afternoon sector at mid-latitudes (Kharkov, Irkutsk), effects of penetration electric field and meridional wind do not counteract, but add up, leading to a small (~15%), positive storm phase over these locations. As the storm develops, Millstone Hill and Irkutsk mid-latitude radars observe further depletion of electron density due to the changes in the neutral composition." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Instituto Geofísico del Perú es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri http://creativecommons.org/licences/by-nc-nd/2.5/pe/ es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Radar--Perú--Mediciones es_ES
dc.subject Radar de dispersión incoherente es_ES
dc.subject Ionósfera es_ES
dc.subject Tormentas magnéticas es_ES
dc.subject Región F es_ES
dc.subject Geomagnetismo--Observaciones es_ES
dc.subject Densidad de electrones ionosféricos es_ES
dc.subject Campos eléctricos es_ES
dc.subject Plasmas espaciales es_ES
dc.title Observations of the April 2002 geomagnetic storm by the global network of incoherent scatter radars es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Radar es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Atmósfera es_ES
dc.subject.ocde Observación es_ES
dc.subject.ocde Tormentas es_ES
dc.subject.ocde Física es_ES
dc.identifier.journal Annales Geophysicae es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.5194/angeo-23-163-2005 es_ES

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