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*ARCTIC REGIONS
GREENLAND
MEASUREMENT
Ice and Permafrost
3
Snow
3
ALASKA
2
ICE
2
Meteorology
2
*ACOUSTIC MEASUREMENT
1
*DATA ACQUISITION
1
*EARLY WARNING SYSTEMS
1
*ELECTROMAGNETIC FIELDS
1
*ICE CAPS
1
*NORTH AMERICA
1
*SEA ICE
1
*SIGNALS
1
*STRUCTURAL ANALYSIS
1
*TRANSMITTERS
1
*UNDERWATER ACOUSTICS
1
ACCURACY
1
AIR FORCE
1
ARCTIC OCEAN ISLANDS
1
Acoustics
1
BATHYTHERMOGRAPH DATA
1
CALIBRATION
1
CANADA
1
COASTAL REGIONS
1
DEPTH
1
DEW LINE
1
DYE 2
1
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