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Authors: Dominici, P.* 
Cander, L. R.* 
Zolesi, B.* 
Title: On the origin of medium-period ionospheric waves and their possible modelling: a short review
Issue Date: Oct-1997
Series/Report no.: 5/40 (1997)
Keywords: Ionosphere
ionospheric waves
acoustic gravity waves
Subject Classification01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation 
Abstract: This article introduces the concept of ionospheric waves with periods from about 15 min to about 4 h as one of the acoustic-gravity wave-induced phenomena. The existence of these medium-period ionospheric waves in the various ionospheric layers is supported by the results of a data analysis which has shown remarkable characteristics in occurrence and direction of the waves with a period not longer than about 2 h. The explanation offered is based on the assumption that a unique phenomenon capable to launch acoustic-gravity waves related to such ionospheric waves is the sudden change in physical conditions of the atmosphere due to the passage of the solar terminator.
Appears in Collections:Annals of Geophysics

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