Equatorial ionospheric electrodynamics during solar flares

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dc.contributor.authorZhang, Ruilong
dc.contributor.authorLiu, Libo
dc.contributor.authorLe, Huijun
dc.contributor.authorChen, Yiding
dc.coverage.spatialJicamarca
dc.coverage.spatialLima
dc.coverage.spatialPerú
dc.date.accessioned2018-11-21T18:18:19Z
dc.date.available2018-11-21T18:18:19Z
dc.date.issued2017-05-09
dc.description.abstractPrevious investigations on ionospheric responses to solar flares focused mainly on the photoionization caused by the increased X‐rays and extreme ultraviolet irradiance. However, little attention was paid to the related electrodynamics. In this letter, we explored the equatorial electric field (EEF) and electrojet (EEJ) in the ionosphere at Jicamarca during flares from 1998 to 2008. It is verified that solar flares increase dayside eastward EEJ but decrease dayside eastward EEF, revealing a negative correlation between EEJ and EEF. The decreased EEF weakens the equatorial fountain effect and depresses the low‐latitude electron density. During flares, the enhancement in the Cowling conductivity may modulate ionospheric dynamo and decrease the EEF. Besides, the decreased EEF is closely related to the enhanced ASY‐H index that qualitatively reflects Region 2 field‐aligned current (R2 FAC). We speculated that solar flares may also decrease EEF through enhancing R2 FAC that leads to an overshielding‐like effect.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationZhang, R., Liu, L., Le, H., & Chen, Y. (2017). Equatorial ionospheric electrodynamics during solar flares.==$Geophysical Research Letters, 44$==(10), 4558-4565. https://doi.org/10.1002/2017GL073238es_ES
dc.identifier.doihttps://doi.org/10.1002/2017GL073238es_ES
dc.identifier.journalGeophysical Research Letterses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3784
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:0094-8276
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectEEJes_ES
dc.subjectEIAes_ES
dc.subjectEquatorial electric fieldes_ES
dc.subjectSolar flarees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleEquatorial ionospheric electrodynamics during solar flareses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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