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Ice and Permafrost
12
POLAR REGIONS
Snow
12
THICKNESS
6
ANTARCTIC REGIONS)
5
ATMOSPHERIC TEMPERATURE
5
(*SEA ICE
4
ANTARCTIC REGIONS
4
FREEZING
4
MCMURDO SOUND
4
PERIODIC VARIATIONS
4
SEA ICE
4
*SEA ICE
3
GLACIERS
3
ICE
3
ICEBREAKERS
3
MARINE TRANSPORTATION
3
PREDICTIONS
3
SURFACE TEMPERATURE
3
WEATHER FORECASTING
3
DATA PROCESSING
2
DEEP FREEZE OPERATION
2
LOADS(FORCES)
2
MELTING
2
PERMAFROST
2
Physical and Dynamic Oceanography
2
ROSS SEA
2
SALINITY
2
SATELLITE PHOTOGRAPHY
2
SEA ICE)
2
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