The calculations set forth approximations for the freezing time and power demand as {HEAD ~ a function} of {TAIL ~ the advance} of the freezing front for various conditions of soil moisture and initial soil temperature 
The calculations set forth approximations for the freezing time and power demand as { HEAD ~ a function } of { TAIL ~ the advance } of the freezing front for various conditions of soil moisture and initial soil temperature
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH