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Ice and Permafrost
17
Snow
*SEA ICE
11
THICKNESS
6
*SOUNDING
5
ICE
5
MEASUREMENT
5
*ICE
4
DENSITY
4
HELICOPTERS
4
SALINITY
4
SURFACES
4
*BRINES
3
*ELECTROMAGNETIC INDUCTION
3
*THICKNESS
3
ALASKA
3
BATHYMETRY
3
ELECTRICAL CONDUCTIVITY
3
ELECTROMAGNETIC INDUCTION
3
Electricity and Magnetism
3
POROSITY
3
PROFILES
3
Physical and Dynamic Oceanography
3
TEMPERATURE
3
*ANTARCTIC REGIONS
2
*ICE FORMATION
2
*RADAR
2
*SNOW
2
AIRBORNE
2
AIRCRAFT ANTENNAS
2
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