Excitation of plasma waves in the ionosphere caused by atmospheric acoustic waves |
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Authors: | N. Ya. Kotsarenko R. Pérez Enríquez S. V. Koshevaya |
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Affiliation: | (1) Instituto de Geofísica, UNAM, Coyoacán 04510, México D. F., Mexico;(2) Instituto Nacional de Astrofisica, Optica y Electrónica (INAOE), P.O. BOX 51&216, Z. P. 72000 Puebla, Mexico |
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Abstract: | The transformation of atmospheric acoustic waves into plasma waves in the ionosphere is investigated. The transformation mechanism is based on plasma wave exitation by growing acoustic waves, when a frequency/wavelength matching situation is reached. The interaction of acoustic and plasma waves occurs through collisions of neutral particles with ions. For the case of ion-sound waves, oscillations on ion cyclotron frequency and Alfvén waves is considered. A peculiarity of Alfvén waves is the wide frequency band which may be stimulated through wave-wave interaction. |
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