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dc.contributor.author Alken, Patrick
dc.contributor.author Maus, Stefan
dc.date.accessioned 2018-10-29T17:04:32Z
dc.date.available 2018-10-29T17:04:32Z
dc.date.issued 2007-09-13
dc.identifier.citation Alken, P., & Maus, S. (2007). Spatio-temporal characterization of the equatorial electrojet from CHAMP, Ørsted, and SAC-C satellite magnetic measurements.==$Journal of Geophysical Research: Space Physics, 112$==(A9), A09305. https://doi.org/10.1029/2007JA012524 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3197
dc.description.abstract The equatorial electrojet (EEJ) is an eastward electric current on the day‐side, flowing in a narrow band along the dip equator in the ionospheric E region. Recent magnetic observations from the CHAMP, Ørsted, and SAC‐C satellites, comprising more than 95,000 dip equator crossings from 1999 to 2006, have provided an unprecedented longitudinal coverage of the EEJ magnetic signature. We have used these data to construct an empirical model of the EEJ current climatological mean and day to day variability as a function of longitude, local time, season, and solar flux. Our model has been successfully verified against vertical drift data from the JULIA radar at Jicamarca. We have also used the EEJ observations to estimate the self‐correlation of the EEJ, confirming short longitudinal correlation lengths of 15° and finding a temporal correlation length of 2.4 h. Our model's predictions of the eastward electric field and its standard deviation may provide useful input to various kinds of ionospheric simulations. Coefficients and software are available online at http://models.geomag.us/EEJ.html and http://www.earthref.org. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Electrojet es_ES
dc.subject Ionosphere es_ES
dc.subject Model es_ES
dc.title Spatio-temporal characterization of the equatorial electrojet from CHAMP, Ørsted, and SAC-C satellite magnetic measurements es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1029/2007JA012524 es_ES

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