Superposed epoch analysis of the dayside ionospheric response to four intense geomagnetic storms

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dc.contributor.authorMannucci, A. J.
dc.contributor.authorTsurutani, B. T.
dc.contributor.authorAbdu, M. A.
dc.contributor.authorGonzalez, W. D.
dc.contributor.authorKomjathy, A.
dc.contributor.authorEcher, E.
dc.contributor.authorIijima, B. A.
dc.contributor.authorCrowley, G.
dc.contributor.authorAnderson, D.
dc.date.accessioned2018-10-30T17:25:46Z
dc.date.available2018-10-30T17:25:46Z
dc.date.issued2008-07-09
dc.description.abstractPrompt daytime ionospheric responses are presented for the following four intense geomagnetic storms: 29 October 2003, 30 October 2003, 20 November 2003, and 7 November 2004. We perform a superposed epoch analysis of the storms by defining the start time of the epoch when the Kan‐Lee interplanetary electric field (proportional to the reconnection electric field) first reaches 10 mV/m during a period of continuously southward Bz. Measurements from the GPS receiver onboard the CHAMP satellite at 400 km altitude indicate significant low‐ to middle‐latitude daytime total electron content (TEC) increases above the satellite within 1–2 h of the defined start time for three of the storms (∼1400 local solar time). The 20 November 2003 data follow a different pattern: the largest TEC increases appear several hours (∼5–7) following the interplanetary magnetic field Bz event onset. TEC data obtained from ground‐based GPS receivers for the November 2003 storm tend to confirm a “late” TEC increase for this storm at ∼1400 LT. Estimates of vertical plasma uplift near the equator at Jicamarca longitudes (∼281 E) using the dual‐magnetometer technique suggest that variability of the timing of the TEC response is associated with variability in the prompt penetration of electric fields to low latitudes. It is also found that for the November 2003 magnetic storm the cross‐correlation function between the SYM‐H index and the interplanetary electric field reached maximum correlation with a lag time of 4 h. Such a large lag time has never been noted before. The long delays of both the ionosphere and magnetosphere responses need to be better understood.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationMannucci, A. J., Tsurutani, B. T., Abdu, M. A., Gonzalez, W. D., Komjathy, A., Echer, E., ... Anderson, D. (2008). Superposed epoch analysis of the dayside ionospheric response to four intense geomagnetic storms.==$Journal of Geophysical Research: Space Physics, 113$==(A3), A00A02. https://doi.org/10.1029/2007JA012732es_ES
dc.identifier.doihttps://doi.org/10.1029/2007JA012732es_ES
dc.identifier.journalJournal of Geophysical Research: Space Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3235
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:2169-9380
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectSolar windes_ES
dc.subjectMagnetosphere‐ionosphere couplinges_ES
dc.subjectGlobal ionospheric stormses_ES
dc.subjectDaytime superfountaines_ES
dc.subjectPrompt penetration electric fieldses_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleSuperposed epoch analysis of the dayside ionospheric response to four intense geomagnetic stormses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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