An difríocht idir athruithe ar: "An tAigéan Antartach"

Cuimsíonn '''an tAigéan Antartach''',<ref>[https://en.wikisource.org/wiki/Encyclop%C3%A6dia_Britannica,_Ninth_Edition/Antarctic_Ocean Encyclopædia Britannica, Ninth Edition/Antarctic Ocean] </ref> ar a dtugtar '''an tAigéan Theas'''<ref>[https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Great_Southern_Ocean 1911 Encyclopædia Britannica/Great Southern Ocean] </ref> freisin, na huiscí is faide ó dheas den aigéan domhanda, a ghlactar leis go bhfuil sé ó dheas den domhanleithead deisceartach 60° agus ag timpeallú na h[[Antartaice|Antartaice.]] Le méid 20,327,000 km² (7,848,000 mi cearnach), meastar gurb é an dara roinn is lú de na cúig phríomhroinn aigéanacha: níos lú ná [[an tAigéan Ciúin]], [[An tAigéan Atlantach|an tAtlantach]], agus [[an tAigéan Indiach]], ach níos mó ná [[an tAigéan Artach]]..<ref name=CIAintro>{{cite web |teideal=Introduction – Southern Ocean|work=CIA Factbook |url=https://www.cia.gov/the-world-factbook/oceans/southern-ocean/ |access-date=16 July 2012 |quote=...As such, the Southern Ocean is now the fourth largest of the world's five oceans (after the Pacific Ocean, Atlantic Ocean, and Indian Ocean, but larger than the Arctic Ocean).}}</ref> Ó na 1980idí, tá an tAigéan Antartach faoi réir athraithe aeráide tapa, rud ba chúis le hathruithe in éiceachóras na mara.