Bigourdan Fjord is a sound

Sound (geography)

In geography a sound or seaway is a large sea or ocean inlet larger than a bay, deeper than a bight and wider than a fjord; or it may be defined as a narrow sea or ocean channel between two bodies of land ....

, 12 miles (19.3 km) long in an east-west direction and averaging 2 miles (3 km) wide, lying between Pourquoi Pas Island

Pourquoi Pas Island

Pourquoi Pas Island is a mountainous island, long and from wide, lying between Bigourdan Fjord and Bourgeois Fjord off the west coast of Graham Land. It was discovered by the French Antarctic Expedition under Charcot, 1908-10...

 and the southwest part of Arrowsmith Peninsula

Arrowsmith Peninsula

Arrowsmith Peninsula is a cape about long on the west coast of Graham Land, west of Forel Glacier, Sharp Glacier and Lallemand Fjord, and northwest of Bourgeois Fjord, with Hanusse Bay lying to the northwest. It was surveyed by the Falkland Islands Dependencies Survey in 1955-58 and named for...

, along the west coast of Graham Land

Graham Land

Graham Land is that portion of the Antarctic Peninsula which lies north of a line joining Cape Jeremy and Cape Agassiz. This description of Graham Land is consistent with the 1964 agreement between the British Antarctic Place-names Committee and the US Advisory Committee on Antarctic Names, in...

. It was discovered by the French Antarctic Expedition, 1908–10, under Jean-Baptiste Charcot, and named by him for Guillaume Bigourdan

Guillaume Bigourdan

Camille Guillaume Bigourdan was a French astronomer.Bigourdan was born at Sistels, Tarn-et-Garonne. In 1877 he was appointed by Félix Tisserand as assistant astronomer at the Toulouse Observatory, and in 1879 followed Tisserand to the Paris Observatory when the latter became director there.He...

, a noted French astronomer. It was roughly surveyed by the British Graham Land Expedition

British Graham Land Expedition

A British expedition to Graham Land led by John Lachlan Cope took place between 1920 and 1922. The British Graham Land Expedition was a geophysical and exploration expedition to Graham Land in Antarctica between 1934 to 1937. Under the leadership of John Riddoch Rymill, the expedition spent two...

, 1934–37, under John Riddoch Rymill

John Riddoch Rymill

John Riddoch Rymill was an Australian polar explorer, who had the rare second clasp added to his Polar Medal.- Early life :Rymill was born the son of a farmer on 13 March 1905 at Penola, South Australia...

, and resurveyed by the Falkland Islands Dependencies Survey, 1948–50.