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Norwegian Sea

(Encyclopedia)Norwegian Sea, part of the Atlantic Ocean, NW of Norway, between the Greenland Sea and the North Sea. It is separated from the Atlantic by a submarine ridge linking Iceland and the Faeroe Islands, and...

Gulf Stream

(Encyclopedia)Gulf Stream, warm ocean current of the N Atlantic Ocean, off E North America. It was first described (1513) by Spanish explorer Ponce de León. The Gulf Stream originates in the Gulf of Mexico and, as...

Palmyra, atoll, Pacific Ocean

(Encyclopedia)Palmyra, atoll (2 sq mi/5.2 sq km), central Pacific, one of the Line Islands, c.1,100 mi (1,770 km) SW of Honolulu. Palmyra has no permanent inhabitants. First visited by Americans in 1802, and later ...

West Quoddy Head

(Encyclopedia)West Quoddy Head, promontory extending into the Atlantic Ocean, SE Maine, SE of Lubec; the easternmost point in the continental United States. A lighthouse is there. ...

iceberg

(Encyclopedia)iceberg, mass of ice that has become detached, or calved, from the edge of an ice sheet or glacier and is floating on the ocean. Because ice is slightly less dense than water about one ninth of the to...

Challenger expedition

(Encyclopedia)Challenger expedition, British oceanographic expedition under the direction of the Scottish professor Charles Wyville Thompson and the British naturalist Sir John Murray. Taking place from 1872 to 187...

Florida, Straits of

(Encyclopedia)Florida, Straits of, passage, c.90 mi (145 km) wide, between the Florida Keys in the north and Cuba in the south. It connects the Gulf of Mexico with the Atlantic Ocean. ...

Windward Passage

(Encyclopedia)Windward Passage, strait, c.50 mi (80 km) wide, between Cuba and Haiti, connecting the Atlantic Ocean and Caribbean Sea. It provides a direct route from the E United States to the Panama Canal. ...

Tharp, Marie

(Encyclopedia)Tharp, Marie, 1920–2006, American oceanographer and cartographer, grad. Univ. of Michigan (M.A. 1944). A geologist with experience in mapping, she came to Columbia Univ. as a geology research assist...

North Channel

(Encyclopedia)North Channel, strait, c.75 mi (120 km) long, between Northern Ireland and Scotland, connecting the Irish Sea with the Atlantic Ocean. It is 13 mi (21 km) across at its narrowest point. ...