Anomalous noise from whistlers and radio atmospherics due to quasi-transverse electromagnetic mode propagation of VLF signals in the Earth-ionosphere waveguide

摘要

Observations of unusual VLF signals in the 0-4 kHz range are presented which appear to be band-limited segments of sferics and whistlers. These observations can be explained in terms of quasi-transverse electromagnetic mode propagation over long distances in the Earth-ionosphere waveguide.