Living in Northern Maine, we experience deep penetrating frost action as much as 7-10 feet deep, depending on temperatures, soils, moisture content, snow cover, etc. I am looking for information showing different soil types with or without different moisture levels and the depth of frost penetration achieved under similar temperatures. In addition, I am looking for information showing the freeze thaw relationship over time, specifically does frost action still penetrate deeper when the thaw cycle begins, and under what conditions. My understanding is that frost is a suface down phenomenon and so is the thaw cycle, but it seems that municipal water systems continue to experience frozen pipes even when temperatures are rising and surface thawing has begun.
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