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Arctic Ocean
Continental shelves
1
Ice cover
1
Northeast Passage
1
Ocean currents
1
Ocean floors
1
Ocean temperature
1
Runoff
1
Salinity
1
Seasonal variations
1
Siberia
1
Sibérie
1
Spatial distribution
1
Submarine topography
1
Water masses
1
bird flight
1
bird migration
1
migration d’oiseaux
1
océan Arctique
1
orientation
1
passage du Nord-Est
1
radar
1
vol d’oiseau
1
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