F. Pauer et al., RAMAN-SPECTROSCOPIC STUDY ON THE NITROGEN OXYGEN RATIO IN NATURAL ICECLATHRATES IN THE GRIP ICE CORE/, Geophysical research letters, 22(8), 1995, pp. 969-971
We have carried out Raman spectroscopic experiments on air clathrates
in the GReenland Ice Core Project (GRIP) deep ice core. We present new
N-2/O-2 measurements that markedly differ from previous measurements
of the Dye-3 ice core: the N-2/O-2 ratio we observe is much closer to
atmospheric. This has new implications for the interpretation of gas d
istributions in ice sheets and the reconstruction of past atmospheric
conditions.