WORLD-WIDE VLF EFFECTIVE-CONDUCTIVITY MAP

Abstract

A map showing effective electrical earth conductivity values for a propagating wave at VLF (10 kHz to 30 kHz) has been prepared for the major land areas of the world. Land area conductivity determinations were in most cases based upon known geological and climatological information. Actual conductivity data was collected where possible to aid in determining regional effective conductivity values, but the correlation between geology (and other known factors), and conductivity was used in estimating conductivity for the majority of the land areas. The conductivity data are overprinted on seven 17 x 22 inch base maps. Effective conductivity values are designated by numbers from 1 to 10 referenced to a legend on each sheet. Separate page-size maps showing a confidence factor and a variability factor are included.

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Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1968
Accession Number
AD0675771

Entities

People

  • Robert R. Morgan

Organizations

  • Westinghouse Electric Corporation

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Boundaries
  • Conductivity
  • Contractors
  • Corporations
  • Electrical Conductivity
  • Electrical Properties
  • Electromagnetic Fields
  • Materials
  • Measurement
  • Military Research
  • North America
  • Permafrost
  • South America
  • United States
  • United States Government

Readers

  • Life Cycle Cost Analysis
  • Oceanography.
  • Space/Atmospheric Physics.