DEVELOPMENT OF AIRBORNE ELECTROMAGNETIC SURVEY INSTRUMENTATION AND APPLICATION TO THE SEARCH FOR BURIED SAND AND GRAVEL--A SUMMARY REPORT

The development of airborne electromagnetic survey systems (AEM) began about 30 years ago in Canada. From that time forward, most of the work has been carried out by Canadian firms. To date, the systems have mostly been used in exploration for metallic mineral deposits, however, in the last 10 years there has been some use of the systems for looking at surface material types and exploring for sand and gravel. The results of this work are extremely encouraging; however, the body of experience is as yet limited. The three systems which appear to have the greatest potential in exploration for sand and gravel are E-Phase, INPUT, and Dighem. All of these rely on radio frequencies in the very low frequency (VLF) range. Each has been used to locate sand and gravel under specific sets of conditions. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/34E1132
• Supplemental Notes:
  • Sponsored by DOT, Federal Highway Adminstration.
• Corporate Authors:

  Earth Satellite Corporation

  7222 47th Street (Chevy Chase)
  Washington, DC  United States  20015
• Authors:
  • Russell, O R
  • Everett, J R
  • Uncapher, J A
• Publication Date: 1977-1

Media Info

• Features: Tables;
• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Aerial surveying; Electromagnetism; Frequency (Electromagnetism); Gravel; Instrumentation; Mineral deposits; Sand
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00165545
• Record Type: Publication
• Source Agency: National Technical Information Service
• ISBN: 34E1-132
• Report/Paper Numbers: FHWA-RD-77- 35 Intrm Rpt., FCP 34E1-132
• Contract Numbers: DOT-FH-11-9144
• Files: TRIS
• Created Date: Jan 30 1978 12:00AM