A LOW-NOISE SEISMIC METHOD FOR USE IN PERMAFROST REGIONS

DYNAMIC CHARGES OF TEN LB OR GREATER DETONATED IN PERMAFROST REGIONS AT DEPTHS LESS THAN FIFTY FT BELOW THE GROUND SURFACE TEND TO CREATE FROST BREAKS, A PHENOMENON OF STRONG SEISMIC ENERGY FROM AN OUTWARD FLOW OF MINUTE CRACKS IN THE PERMAFROST CAUSED BY THE DETONATION. THE FROST BREAKS OBLITERATE REFLECTED ENERGY ARRIVING AT THE SAME TIME. A SEISMIC METHOD WAS DEVISED WHICH MINIMIZES FROST BREAKS AND ALLOWS A REDUCTION OF THE MASSIVE EQUIPMENT CURRENTLY REQUIRED EITHER TO DRILL SHOTHOLES OR FOR THE APPLICATION OF A NONDYNAMITE SURFACE ENERGY SOURCE. THE EXPERIMENTAL RESULTS COMPARE FAVORABLY WITH THOSE FROM THE CONVENTIONAL METHOD; THE SMALL CHARGES DETONATED AT SHALLOW DEPTHS WERE SAFE BOTH FROM THE POINT OF VIEW OF HUMAN SAFETY AND ECOLOGICAL CARE. /G/

  • Supplemental Notes:
    • Vol 36, No 6, PP 1150-1161, 10 FIG
  • Corporate Authors:

    Society of Exploration Geophysicists

    Shell Building, P. O. Box 3098
    Tulsa, OK  USA  74101
  • Authors:
    • Rackets, H M
  • Publication Date: 0

Media Info

  • Serial:
    • Geophysics
    • Issue Number: 0
    • Publisher: Society of Exploration Geophysicists

Subject/Index Terms

Filing Info

  • Accession Number: 00230081
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 2 1972 12:00AM