Atmospheric concentrations of CH4 were extracted from the 2,184-m ice core from
Byrd Station (Antarctica) for the period 550 - 51,100 BP in 1967-68 by
the U.S. Cold regions Research and Engineering ...
Ice cores drilled at Siple Station (Antarctica) for 200-m depth were analyzed
for CH4 concentrations for the period 1771-1956. Two different methods were
used for extracting air in the ice core (dry ...