This book on electromagnetic resonance phenomena describes a general
approach to physical problems, ways to solve them, and properties of the
solutions obtained. Attention is given to the discussion and
interpretation of formal and experimental data and their links to global
atmospheric conditions such as the dynamics of global thunderstorm
activity, variations of the effective height of the lower ionosphere,
etc.
Schumann resonance is related to worldwide thunderstorm activity, and
simultaneously, to global properties of the lower ionosphere. Transverse
resonance is predominantly a local phenomenon containing information on
the local height and conductivity of the lower ionosphere and on nearby
thunderstorm activity.
Transient events in ELF-VLF radio propagation are also treated. These
are natural pulsed radio signals and/or abrupt changes of manmade VLF
radio signals. The transients associated with cloud-to-ionosphere
discharges (red sprites, blue jets, trolls) are discussed, and
clarification of the underlying physical ideas and their practical
applications to pioneer results achieved in the field recently are
emphasised.