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
Centigrade 232 full recitation of the "Centigrade 232" collection. Other releases comprised recitations of the unpublished "Earth Ritual" poems collection and two music tapes, "Blueprints from the Cellar" Volumes 1 and 2, which contained home demos of songs, some of which would be released in completed form on the albums "Freq" and "Test Tube Conceived". Calvert's "Centigrade 232" tape recitation was first used with music on the second Spirits Burning album "Reflections in a Radio Shower", released in 2001. Don Falcone took the original recording of Calvert reading his poem "Centigrade 232" and integrated it into the track "Drive-By Poetry". Lines from