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www.nat-hazards-earth-syst-sci.net/11/1011/2011/
doi:10.5194/nhess-11-1011-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.
On the acoustic model of lithosphere-atmosphere-ionosphere coupling before earthquakes
1Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
2Institute of Physics of the Earth of the Russian Academy of Sciences, Bolshaya Gruzinskaya 10, 123995 Moscow, Russia
Abstract. In this work, the many-fluid magnetohydrodynamic theory is applied to describe the modification of the electromagnetic field of the ionospheric E-layer by acoustic-type waves. There, altitudinal profiles of the electromagnetic field and the plasma parameters of the atmosphere and ionosphere are taken into account. It is concluded that at E-region altitudes above seismo-active regions, magnetohydrodynamic waves as Alfvén and magnetoacoustic ones might change their amplitude and direction of propagation. Waves of the Farley-Buneman type might also be excited a few days before very strong earthquakes. The collisions between the neutral and charged particles of the E-layer also cause diffusion and heating processes. Thus, changes of the characteristic foE-frequency might be obtained.
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Citation: Meister, C.-V., Mayer, B., Dziendziel, P., Fülbert, F., Hoffmann, D. H. H., and Liperovsky, V. A.: On the acoustic model of lithosphere-atmosphere-ionosphere coupling before earthquakes, Nat. Hazards Earth Syst. Sci., 11, 1011-1017, doi:10.5194/nhess-11-1011-2011, 2011. Bibtex EndNote Reference Manager XML
