1965•Journal of Research of the National Bureau of Standards Section D Radio ScienceOpen access

Earth-ionosphere cavity resonances and the propagation of ELF radio waves

J.R. Wait

Abstract

Thi s is a tutorial expos ition of the theory of ELF propagation in the eart h•ionosp here waveguide.Derivation s are not give n; in s tead, th e plau s ibility of the res ults a nd th e physica l aspects of certain s pec ial cases are discussed.A s implifi ed trea tm ent of th e Schumann cav it y reso nan ce phenomenon is a lso given.

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Key concepts: Ionosphere, Schumann resonances, Earth (classical element), Geophysics, Physics, Radio wave, Earth–ionosphere waveguide, Ionospheric heater