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| Titel |
Ionospheric conductivity effects on electrostatic field penetration into the ionosphere |
| VerfasserIn |
V. V. Denisenko, M. Y. Boudjada, M. Horn, E. V. Pomozov, H. K. Biernat, K. Schwingenschuh, H. Lammer, G. Prattes, E. Cristea |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 8, no. 5 ; Nr. 8, no. 5 (2008-09-17), S.1009-1017 |
| Datensatznummer |
250005765
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| Publikation (Nr.) |
 copernicus.org/nhess-8-1009-2008.pdf |
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| Zusammenfassung |
The classic approach to calculate the electrostatic field penetration, from
the Earth's surface into the ionosphere, is to consider the following
equation ∇·(σ·∇Φ)=0 where
σ and Φ are the electric conductivity and the potential of
the electric field, respectively. The penetration characteristics strongly
depend on the conductivities of atmosphere and ionosphere. To estimate the
electrostatic field penetration up to the orbital height of DEMETER satellite
(about 700 km) the role of the ionosphere must be analyzed. It is done with
help of a special upper boundary condition for the atmospheric electric
field. In this paper, we investigate the influence of the ionospheric
conductivity on the electrostatic field penetration from the Earth's surface
into the ionosphere.
We show that the magnitude of the ionospheric electric field penetrated from
the ground is inverse proportional to the value of the ionospheric Pedersen
conductance. So its typical value in day-time is about hundred times less
than in night-time. |
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