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dc.contributor.author Manoj, C.
dc.contributor.author Maus, S.
dc.contributor.author Alken, P.
dc.date.accessioned 2018-11-13T10:24:17Z
dc.date.available 2018-11-13T10:24:17Z
dc.date.issued 2013-08-22
dc.identifier.citation Manoj, C., Maus, S., & Alken, P. (2013). Long‐period prompt‐penetration electric fields derived from CHAMP satellite magnetic measurements.==$Journal of Geophysical Research: Space Physics, 118$==(9), 5919-5930. https://doi.org/10.1002/jgra.50511 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3532
dc.description.abstract The prompt penetration of the interplanetary electric field to the equatorial ionosphere is conveniently modeled with a frequency‐dependent transfer function. However, long‐period responses (>3 h) of previously estimated transfer functions differ considerably due to insufficient ionospheric eastward electric field (EEF) data useful for spectral analysis. The EEF derived from the Challenging Minisatellite Payload (CHAMP) satellite provides a new opportunity to reliably estimate the long‐period transfer function for the first time. Our objectives in this paper are twofold: first, we analyze the frequency spectra of the equatorial ionospheric eastward electric field for periods greater than 6 h; second, we test the hypothesis that the average prompt‐penetration effect lasts less than 3 h after an initial perturbation in the interplanetary electric field (IEF). We find that atmospheric sources dominate the EEF at diurnal frequencies, and its subharmonics and magnetospheric sources dominate the EEF for other frequencies. The CHAMP‐derived transfer function has smaller errors than the previous estimates, and we confirm that the average prompt‐penetration response of the equatorial ionospheric electric field to a 1 mV/m change in the IEF is negligible after 3 h and up to the maximum analysis period of 32 h. We update our transfer function model with the new data sets and make the filter coefficients available to the scientific community. The transfer function prediction matched reasonably well with the EEF observation in both the South American and Indian sectors. A transfer function model of the prompt‐penetration effects, driven by the interplanetary electric field, can be highly beneficial to the real‐time specification of the ionosphere. 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 Ionosphere es_ES
dc.subject Magnetosphere es_ES
dc.subject Electric field es_ES
dc.subject Prompt penetration es_ES
dc.subject CHAMP es_ES
dc.title Long‐period prompt‐penetration electric fields derived from CHAMP 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/10.1002/jgra.50511 es_ES

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