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West Scotia Basin
submarine trough, Atlantic Ocean
West Scotia Basin, submarine trough of the Scotia Sea, an arm of the South Atlantic Ocean, about 500 miles (800 km) southeast of Tierra del Fuego, South America. Its mean depth is about 9,800 feet (3,000 m), and it is some 700 miles (1,130 km) long and 300 miles (480 km) wide. The submerged Scotia Ridge rises to the north of it and the South Shetland Islands to its south. The West Scotia Basin parallels the East Scotia Basin but is separated from it by a slight submerged rise that runs between the island of South Georgia and the South ...(100 of 157 words)