Geographic location
Antarctic
2
Arctic
2
Arctic Ocean
2
Baldwin
2
Beck
2
Bonnier
2
Chevreux
2
Christiania
2
Elephant Island
Gage
2
Giganteus
2
Gonzalez
2
Grieg
2
Hallberg
2
Harding
2
Hurley
2
Indian
2
Kerguelen
2
Lowry
2
McGrath
2
Mid-Atlantic Ridge
2
Morton
2
Myers
2
New Zealand
2
Norwegian Sea
2
Pacific
2
Sedov
2
Southern Ocean
2
Sullivan
2
Tovik
2
Weddell
Weddell Sea
2
West European Basin
2