Feasibility of Measuring Transverse Electric Noise at VLF and LF on an Ice Cap

Abstract

There is an existing need for very low frequency (VLF) and low frequency (LF) transverse electric (TE) air-to-air communications. However, TE noise cannot be measured at ground level on highly conducting or even moderately conducting ground, and routine measurements from an aircraft would be prohibitively expensive. The amplitudes of TE waves at the surface of an ice cap are evidently strong enough to be measured at LF when the ice cap is about 1000 meters thick and at VLF when the ice cap is about 2000 meters thick. Amplitudes are stronger over colder ice. Measurements of temperature in a drill hole would be needed for extrapolating fields to higher heights.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA252280

Entities

People

  • C. H. Shellman

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Amplitude
  • Angle Of Incidence
  • Atmospheric Sciences
  • Dielectric Permittivity
  • Electric Fields
  • Electromagnetic Fields
  • Equations
  • Frequency
  • Glaciers
  • Ice
  • Measurement
  • Quantum Mechanics
  • Refraction
  • Refractive Index
  • Transverse
  • Very Low Frequency

Readers

  • Acoustics.
  • Aerospace Test and Evaluation
  • Polar and Arctic Studies