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| Titel |
Sudden Impulses: the propagation time and the discrimination between magnetospheric and ionospheric contributions in ground manifestations. |
| VerfasserIn |
Mirko Piersanti, Umberto Villante, Luisa Capannolo |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250091080
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| Publikation (Nr.) |
 EGU/EGU2014-5566.pdf |
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| Zusammenfassung |
| A comparison between interplanetary, magnetospheric observations at geostationary orbit and
geomagnetic arrays allows to estimate the propagation speed of SI disturbances through the
dayside magnetosphere and to discriminate between magnetospheric and ionospheric
contribution in ground SI manifestations. The splitting between the magnetospheric and
ionospheric contribution is made by a comparison between the observations at geostationary
orbit and the predictions of the Tsyganenko model. It allows to subtract from ground
measurements, the expected DL field (of magnetospheric origin), in order to obtain a
confident estimate of the residual DP field of ionospheric origin at different latitudes and
local times (LT). The evaluation of propagation times of disturbances related to SI is made by
a comparison between experimental observations along geostationary orbit at different LT. |
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