E-PHASE SYSTEM FOR DETECTING BURIED GRANULAR DEPOSITS

In 1968, the Saskatchewan Department of Highways and Transportation began an investigation of airborne geophysical survey methods for mapping buried deposits. Single-frequency E-Phase airborne resistivity surveys were carried out in 1970 and 1971, and multifrequency survey programs began in 1973. The E-phase airborne resistivity system uses radio wave transmissions to provide the primary field, and it measures the apparent resistivity of the ground at 3 frequencies simultaneously. The measurement of apparent resistivity at 3 frequencies provides information about the subsurface to 3 depths. The correlation between earht materials and resistivities may vary from area to area, but definite limits of resistivity can be assigned for broad ranges of soil classification. The E-Phase survey in the Wadena area of Sakatchewan, where intertill gravel deposits were suspected to exist, resulted in 27 anomalies worthy of follow-up. Fifteen of these were followed up on, and all but 1 contained granular material under till cover. The preliminary ground follow-up results for 1 of the anomalies indicate a minimum of 1 million Mg of gravel that is covered and undelain by till. The test trails and routine surveying to date have shown that the E-Phase system can be used successfully for locating superficial and intertill granular deposits and that the system as it now exists represents a major advance in soil- exploration methods.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/581/581-001.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=E-PHASE+SYSTEM+FOR+DETECTING+BURIED+GRANULAR+DEPOSITS&author=R.+CULLEY&author=F.+Jagodits&author=R.+Middleton&publication_year=1976
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Exploration and Classification of Earth Materials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • CULLEY, R W
  • Jagodits, F L
  • Middleton, R S
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-10
• Monograph Title: Innovations in Subsurface Exploration of Soils
• Serial:
  • Transportation Research Record
  • Issue Number: 581
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aerial surveying; Engineering soils; Geophysical prospecting; Granular materials; Gravel; Resistivity method; Soil types; Till; Transmission
• Uncontrolled Terms: Soil classification
• Old TRIS Terms: Earth materials; Geophysical explorations; Radio transmission
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00141417
• Record Type: Publication
• ISBN: 0309024951
• Report/Paper Numbers: Conf Paper
• Files: TRIS, TRB
• Created Date: Nov 3 1976 12:00AM