Ice core dating methods
However, some creationist models predict significant quantities of snow immediately after the Flood (Oard, 1990). Perhaps as much as 95% of the ice near the poles could have accumulated in the first 500 years or so after the Flood. The technique used to estimate the age of an ice layer deep in the ice sheet is to measure its ðcontent and compute the atmospheric temperature which is observed to produce such concentrations today (Jouzel and Merlivat, 1984).
We would not assume that the precipitation rate has always been similar to that of today.
We would expect considerably higher precipitation rates immediately following the Flood.
The layers of ice near the bottom of the core should be thicker than expected by the uniformitarian model and contain unusual excursions in ðO, acidity, and particulates from levels higher in the core.
In Greenland, the high precipitation rates not only provide relatively thick annual layers for analysis, but the accumulating snow quickly seals off the ice beneath and protects the record from metamorphosis by pressure and temperature changes in the atmosphere.
In Antarctica, by the time the ice has been buried deeply enough to no longer be influenced by the atmosphere, annual variations have been greatly dampened by diffusion (Epstein, et al., 1965; Johnsen, et al., 1972).
Aside from the fascination with salvaging several vintage aircraft for parts and movie rights, the fact that these aircraft were buried so deeply in such a short time focuses attention on the time scales used to estimate the chronologies of ice.