Thaw depth Thaw depth In soil science, the thaw depth or thaw line is the instantaneous level down to which the soil has warmed to zero degrees celcius. The active layer thickness is the maximum thaw depth over a period of two years. The layer of soil over the thaw depth is called the active layer, while the soil below is called permafrost. The term frost front refers to the varying position of the thaw line during the periods of freezing/thawing. The knowledge of the thaw depth is important for the two major reasons: its influence on the ecology and on construction
The Word for World Is Forest being able to dream while wide awake as well. The visions they see while dreaming direct and shape their waking behavior, which Selver describes as "balanc[ing] your sanity ... on the double support, the fine balance, of reason and dream; once you have learned that, you cannot unlearn it any more than you can unlearn to think." The leaders among the Athsheans are the best dreamers, and they consider individuals able to interpret dreams to be gods. The Athshean word for "god" is the same as the word for "translator", representing this role that "gods have" in their society. Spivack