Figure 13. Horizontal section of the interface between the CFG ice (at
left) of the bottom brick and the surrounding snow ice in which it was
embedded. Some recrystallization has taken place.
Figure 14. Typical sample of CFG ice showing equiaxed crystals and
small, uniformly distributed bubbles.
brick. Another thermocouple was centered on top of
profile of the mound. Figure 11 shows a plot of these
the brick and another brick placed on top of this. Each
temperature readings taken during the final two weeks
successive brick was installed with a thermocouple in
of the test period.
this manner. We then buried the stack with snow to
Heavy snows resulted in about 5 cm of water
minimize lateral thermal disturbance. Figure 10