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GRIP/GISP/NGRIP
Greenland Ice Core Projects
7
Sampling/drilling ice
7
AGE
6
Ammonium
6
Calcium
6
Magnesium
6
Nitrate
6
Potassium
6
ice/snow
6
Chloride
5
Depth
5
GISP
5
Sulfate
5
bottom/max
5
top/min
5
DRILL
4
Drilling/drill rig
4
Sodium ion
4
maximum/old
4
minimum/young
4
GISP2-B
2
GRIP
2
Greenland
2
ISTUK
2
ISTUK electromechanical drill
2
Methane sulfonic acid
2
1997)
1
AERO
1
ALTITUDE
1
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