| Volumes and Issues Contents of Issue 5 |
www.nat-hazards-earth-syst-sci.net/8/1009/2008/
doi:10.5194/nhess-8-1009-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.
Ionospheric conductivity effects on electrostatic field penetration into the ionosphere
1Institute of Computational Modeling, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia
3Space Research Institute, Austrian Academy of Science, Graz, Austria
4Institute of Physics, Department of Geophysics, Astrophysics and Meteorology, Karl-Franzens-University Graz, Austria
5Institute of Physics, Department of Theoretical Physics, Karl-Franzens-University Graz, Austria
6Communication Networks and Satellite Communications Institute, Technical University Graz, Austria
Abstract. 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.
Full Article (PDF, 379 KB)
Citation: Denisenko, V. V., Boudjada, M. Y., Horn, M., Pomozov, E. V., Biernat, H. K., Schwingenschuh, K., Lammer, H., Prattes, G., and Cristea, E.: Ionospheric conductivity effects on electrostatic field penetration into the ionosphere, Nat. Hazards Earth Syst. Sci., 8, 1009-1017, doi:10.5194/nhess-8-1009-2008, 2008. Bibtex EndNote Reference Manager XML
