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*SEA ICE
BERING SEA
2
ICEBREAKERS
2
Ice and Permafrost
2
PRESSURE
2
Snow
2
THICKNESS
*ARCTIC REGIONS
1
*SOUND TRANSMISSION
1
*UNDERWATER SOUND
1
ACOUSTIC REFLECTION
1
ACOUSTIC SCATTERING
1
ACOUSTIC WAVES
1
AERIAL PHOTOGRAPHS
1
ALASKA
1
ARCHIPELAGOES
1
ARCTIC OCEAN
1
ATMOSPHERIC MOTION
1
Acoustics
1
BACKSCATTERING
1
BEAUFORT SEA
1
BOTTOM
1
BUOYS
1
CANADA
1
CHUKCHI SEA
1
COLLECTION
1
CONDUCTIVITY
1
COVERINGS
1
DIRECTIONAL
1
EDGES
1
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