A METHOD OF MEASURING EARTH RESISTIVITY

A METHOD IS PRESENTED FOR MEASURING EARTH RESISTIVITY (OR SPECIFIC RESISTANCE) WHICH MAY BE OF VALUE IN DETERMINING EARTH COMPOSITION SUCH AS MOISTURE CONTENT, MATERIALS OF HIGH CONDUCTIVITY, OR IN THE CALCULATION OR MITIGATION OF DAMAGES TO PIPE SYSTEMS BY ELECTROLYSIS. FOUR UNIFORMLY SPACED HOLES ARE MADE IN THE EARTH IN AN APPROXIMATELY STRAIGHT LINE. IN EACH HOLE IS PLACED AN ELECTRODE, WHICH MAKES ELECTRICAL CONTACT WITH THE EARTH ONLY NEAR THE BOTTOM. THIS CONSTITUTES A FOUR-TERMINAL CONDUCTOR THE RESISTANCE OF WHICH DEPENDS UPON THE DISTANCE BETWEEN THE ELECTRODES AND THE RESISTIVITY. BY MEASUREMENT OF THE DEPTH OF THE HOLES, THE DISTANCE BETWEEN THEM, AND THE RESISTANCE, DATA ARE OBTAINED FROM WHICH THE EFFECTIVE RESISTIVITY IN THE VICINITY CAN BE CALCULATED. THE EQUATIONS ARE DERIVED FOR THIS RELATIONSHIP. USE OF THE METHOD IS DEMONSTRATED AND IT IS INDICATED THAT SUCH A MEASUREMENT MIGHT BE OF ASSISTANCE IN LOCATING DEPOSITS OF ORE OF HIGH CONDUCTIVITY.

  • Supplemental Notes:
    • Scientific PAPER 258, PP 469-478, 4 FIG
  • Corporate Authors:

    National Bureau of Standards /US

    ,    
  • Authors:
    • Wenner, F
  • Publication Date: 1915-10-11

Subject/Index Terms

Filing Info

  • Accession Number: 00234437
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 12 1994 12:00AM