Penetration electric fields: Efficiency and characteristic time scale

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dc.contributor.authorHuang, Chao-Song
dc.contributor.authorSazykin, Stanislav
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.contributor.authorMaruyama, Naomi
dc.contributor.authorKelley, Michael C.
dc.date.accessioned2018-07-18T14:29:21Z
dc.date.available2018-07-18T14:29:21Z
dc.date.issued2007-07
dc.description.abstractPenetration of the interplanetary electric field (IEF) to the middle- and low-latitude ionosphere has been investigated for nearly four decades. Most previous studies focused on the correlation between the interplanetary and ionospheric electric field perturbations. Very little attention has been paid to a quantitative relationship except for a recent case analysis by Kelley et al. [2003. Penetration of the solar wind electric field into the magnetosphere/ionosphere system. Geophysical Research Letters 30(4), 1158. doi:10.1029/2002GL016321]. In this paper, we present a statistical result of the efficiency of IEF penetration to the dayside equatorial ionosphere; the efficiency is defined as the ratio of the change of the equatorial ionospheric electric field to the change of the IEF. The Jicamarca incoherent scatter radar has made continuous operation with a coherent scatter mode since 2001, and the radar data of equatorial ionospheric electric fields are used in our statistics. On the basis of data statistics, we derive an empirical value of 9.6% for the efficiency of penetration. We apply this empirical formula to the observations and numerical simulations of storm-time penetration electric fields over a prolonged interval of southward interplanetary magnetic field. The prediction of the formula is in good agreement with case studies and with results from first-principle simulations of the coupled magnetosphere–ionosphere–thermosphere system. We conclude that the IEF can continuously penetrate to the low-latitude ionosphere without significant attenuation for many hours during the main phase of magnetic storms.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationHuang, C., Sazykin, S., Chau, J. L., Maruyama, N., & Kelley, M. C. (2007). Penetration electric fields: Efficiency and characteristic time scale.==$Journal of Atmospheric and Solar-Terrestrial Physics, 69$==(10-11), 1135-1146. https://doi.org/10.1016/j.jastp.2006.08.016es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jastp.2006.08.016es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Atmospheric and Solar-Terrestrial Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1923
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:1364-6826
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectInterplanetary electric fieldes_ES
dc.subjectPenetration electric fieldes_ES
dc.subjectEquatorial ionospherees_ES
dc.subjectPenetration efficiencyes_ES
dc.subjectShieldinges_ES
dc.subjectMagnetic stormses_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titlePenetration electric fields: Efficiency and characteristic time scalees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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