Accession Number:

AD0759012

Title:

Magic Mode: Investigations of Artificial Stimulation of ULF Waves in the Ionosphere and Magnetosphere.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Report Date:

1973-03-12

Pagination or Media Count:

48.0

Abstract:

The report describes an investigation of the potential usefulness of the ultra-low-frequency ULF band for communications with deeply submerged reception terminals. The discussion begins with a comprehensive review of present knowledge about ULF propagation. Present understanding of ULF propagation modes based on observations of naturally occurring geomagnetic micropulsations is summarized, and those features which are of importance to potential communications systems are discussed. Emphasis is then placed on the study of potential ULF generation mechanisms between 0.2 and 5 Hz which would benefit from the naturally occurring magnetospheric amplification process that is observed to occur in that frequency band. Two possible source regions are considered for the artificial generation of ULF waves the ionospheric dynamo and the magnetospheric proton belt. Author Modified Abstract

Subject Categories:

  • Atmospheric Physics
  • Radiofrequency Wave Propagation
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE