%0 Journal Article
%T On the acoustic model of lithosphere-atmosphere-ionosphere coupling before earthquakes
%A C.-V. Meister
%A B. Mayer
%A P. Dziendziel
%A F. F¨¹lbert
%J Natural Hazards and Earth System Sciences (NHESS) & Discussions (NHESSD)
%D 2011
%I Copernicus Publications
%R 10.5194/nhess-11-1011-2011
%X 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 Alfv¨¦n 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.
%U http://www.nat-hazards-earth-syst-sci.net/11/1011/2011/nhess-11-1011-2011.pdf