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Drilling/drill rig
Sampling/drilling ice
DRILL
6
DEPTH
5
ice/snow
5
AGE
4
Event label
4
GISP
4
GRIP
4
Antarctica
3
Core
3
GISP2-D
3
GRIP/GISP/NGRIP
3
Greenland
3
Greenland Ice Core Projects
3
Calcium cation
2
Chloride anion
2
DEPTH, ice/snow
2
DF
2
Dome_Fuji
2
ISTUK
2
ISTUK electromechanical drill
2
Ion chromatography
2
Magnesium cation
2
Nitrate ion
2
Sodium cation
2
Sulfate anion
2
Temperature
2
-
1
Age model
1
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