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AGE
3
DRILL
3
Drilling/drill rig
3
GISP
3
GISP2
3
GRIP/GISP/NGRIP
3
Greenland Ice Core Projects
Sampling/drilling ice
3
ice/snow
standard deviation
3
Carbon-14 concentration
2
DEPTH
2
-
1
Accumulation of snow/ice per year
1
Accumulation rate
1
Air content
1
Depth
1
Estimated
1
Fraction
1
Gamma-ray spectrometry
1
Sample comment
1
bottom/max
1
top/min
1
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