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| Titel |
Ionospheric reflection of the magnetic activity described by the new index η |
| VerfasserIn |
B. Dziak-Jankowska, I. Stanislawska, T. Ernst |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250026378
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| Zusammenfassung |
| The ionosphere system is the result of acting an external and internal driving forces following
in Solar-Terrestrial interaction. The temporal and spatial characteristics of the ionosphere are
controlled by the physical processes driving by external and internal forces upon which the
maintain of the system depend like composition, neutral wind, and electric fields. Ionospheric
behaviour is well correlated with magnetic activity. Magnetic drivers are bringing essential
energetic input to a ionosphere, so, synthetic information gathered in magnetic indices is
often used. They presented the quantification of the ionospheric changes. A number of
geomagnetic indices have been developed to facilitate the study of ionospheric
activity. It is usually assumed that the external magnetic field inducing currents can be
approximated by a plane wave vertically incident on the Earth’s surface. Indices
characterize irregular magnetic changes. One of the reason of the magnetic indices
development is description of isolated phenomena. These are local, as well as global
indices. The differences discovered in the external part of the vertical geomagnetic
component point to the existence of local inhomogeneities in the magnetosphere
or the ionosphere. Redistribution of the electron concentration in the lower part
of ionosphere during quiet magnetic circumstances has been studied by means
of the η magnetic index. Local ionospheric drifts has been shown and discussed. |
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