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Title: Frost penetration measurements at the USAF intrusion sensor site, Rome, New York, 1973-74
Authors: Rome Air Development Center.
Tobiasson, Wayne.
Atkins, Ronald T.
Keywords: Frost gages
Frost measurements
Frost penetration in soils
Thermal properties
Rome, New York
Intrusion sensors
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 235.
Description: Special Report
Abstract: During the winter of 1973-74, 55 color-change frost gages and 17 thermocouple 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 be low 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 frost gages during 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.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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