FROST PENETRATION MEASUREMENTS AT THE USAF INTRUSION SENSOR SITE, ROME, NEW YORK, 1973-74

During the winter of 1973-74, 55 color-change frost gages and 17 theromocouple assemblies were installed in a field in Rome, New York, to monitor frost penetration. The maximum frost penetration during the winter ranged from 13 in. to 24 in. depending on location. Shallower depths occurred below undisturbed snow and greater depths occurred below paths where the snow was compacted and less effective as an insulator. Variations in soils, vegetative cover and undisturbed snow depth also influenced frost penetration. Some difficulties were experienced with both frost gages and thermocouples because of meltwater seepage down around the assemblies. Methods of eliminating this seepage were developed. Direct probings showed that the color-change frost gages registered somewhat more rapid thaw than was occurring. However, the net performance of the winter exceeded that of the thermocouples. Both techniques need to be complemented by direct probings when the ground is nearly isothermal at the freezing point. The thermocouple and frost gage measurements provided a valuable record of frost penetration.

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 47 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00129036
  • Record Type: Publication
  • Report/Paper Numbers: Special Report 235
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM