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AGE
2
Acid concentration
Calculated
Calculated from conductivity
2
GRIP
2
Magnitude of eruption in amount of sulfuric acid
2
Sampling/drilling ice
2
Sulfuric acid
2
DEPTH
1
DEPTH, ice/snow
1
Drilling/drill rig
1
Duration
1
Duration, number of days
1
GRIP/GISP/NGRIP
1
Greenland
1
Greenland Ice Core Projects
1
Greenland Ice Core Projects GRIP/GISP/NGRIP
1
ISTUK
1
ISTUK electromechanical drill
1
ice/snow
1
number of days
1
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