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ICE ISLANDS
ARCTIC OCEAN)
3
FREEZING
3
Ice and Permafrost
3
MELTING
3
Physical and Dynamic Oceanography
3
Snow
3
(*AERIAL RECONNAISSANCE
2
(*SEA ICE
2
DATA ACQUISITION
2
DATA PROCESSING
2
GREENLAND SEA
2
NAVAL AIRCRAFT
2
OBSERVATION AIRCRAFT
2
SEA ICE)
2
SEA WATER
2
USSR
2
(*ARCTIC OCEAN
1
(*MARINE GEOPHYSICS
1
(*VOLCANOES
1
*ARCTIC OCEAN
1
*ICE FORECASTING
1
*SEA ICE
1
ACCURACY
1
ARCTIC REGIONS
1
CRACKS
1
DENMARK
1
DISTRIBUTION
1
DRIFT
1
FLIGHT PATHS
1
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