Open Polar Keyword
Antarc*
Antarctica
Ongul Island
56
Antarctic
47
East Ongul Island
41
East Antarctica
20
Ice Sheet
13
Prince Olav Coast
6
Sea ice
6
National Institute of Polar Research
4
Antarctic Peninsula
2
Dronning Maud Land
2
Ice cap
2
Icebreaker
2
Norwegian Polar Institute
2
South pole
2
Southern Ocean
2
Victoria Land
2
polar night
2
Adelie penguin
1
Mite
1
Nanorchestes antarcticus
1
Prince Harald Coast
1
Shirase Glacier
1
Weddell Seal
1
antarcticus
1
国立極地研究所
1