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  1. Some relationships among air, snow, and soil temperatures and soil frost

    Each winter gives examples of the insulating properties of snow cover. Seeds and soil fauna are protected from the cold by snow. Underground water pipes are less likely to freeze under snow cover. And, according to many observers, the occurrence, penetration, and thaw of soil frost are affected by snow cover. The depth of snow necessary to protect soil from freezing...

    Author(s):
    George Hart; Howard W. Lull
    Year:
    1963
    Keywords:
    Source:
    Research Note NE-3. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-4

  2. A device for measuring soil frost

    A water-filled plastic tube buried vertically in the soil in a copper casing permitted repeated observation of frost depth without damaging the sampling site. The device is simple and inexpensive and provides data on soil freezing at least as accurate as direct observation by digging through frozen soil.

    Author(s):
    James H. Patric; Burley D. Fridley
    Year:
    1969
    Keywords:
    Source:
    Research Note NE-94. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7p.
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https://www.fs.usda.gov/treesearch/search?keywords=%22soil%20frost%22&f%5B0%5D=station_historical_full%3A%22Northeastern%20Research%20Station%22&f%5B1%5D=type_description%3A%22Research%20Note%20%28RN%29%22