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GRIP
6
Sampling/drilling ice
6
DEPTH
3
DEPTH, ice/snow
3
Drilling/drill rig
3
GRIP/GISP/NGRIP
3
Greenland
3
Greenland Ice Core Projects
3
Greenland Ice Core Projects GRIP/GISP/NGRIP
3
ISTUK
3
ISTUK electromechanical drill
3
ice/snow
3
Air content
2
Carbon dioxide
2
Isotope ratio mass spectrometry
2
Methane
2
Sediment and debris content
2
δ Deuterium
2
Nitrogen
1
Nitrogen, gas
1
Oxygen
1
Oxygen, gas
1
gas
1
water
1
δ18O
1
δ18O, water
1
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