Geography Atlantic Ocean

Location:

body of water between Africa, Europe, the Southern Ocean, and the

Western Hemisphere

Geographic coordinates:

0 00 N, 25 00 W

Map references:

Political Map of the World

Area:

total: 76.762 million sq km

note: includes Baltic Sea, Black Sea, Caribbean Sea, Davis Strait,

Denmark Strait, part of the Drake Passage, Gulf of Mexico, Labrador

Sea, Mediterranean Sea, North Sea, Norwegian Sea, almost all of the

Scotia Sea, and other tributary water bodies

Area - comparative:

slightly less than 6.5 times the size of the US

Coastline:

111,866 km

Climate:

tropical cyclones (hurricanes) develop off the coast of Africa near

Cape Verde and move westward into the Caribbean Sea; hurricanes can

occur from May to December, but are most frequent from August to

November

Terrain:

surface usually covered with sea ice in Labrador Sea, Denmark

Strait, and coastal portions of the Baltic Sea from October to June;

clockwise warm-water gyre (broad, circular system of currents) in

the northern Atlantic, counterclockwise warm-water gyre in the

southern Atlantic; the ocean floor is dominated by the Mid-Atlantic

Ridge, a rugged north-south centerline for the entire Atlantic basin

Elevation extremes:

lowest point: Milwaukee Deep in the Puerto Rico Trench -8,605 m

highest point: sea level 0 m

Natural resources:

oil and gas fields, fish, marine mammals (seals and whales), sand

and gravel aggregates, placer deposits, polymetallic nodules,

precious stones

Natural hazards:

icebergs common in Davis Strait, Denmark Strait, and the

northwestern Atlantic Ocean from February to August and have been

spotted as far south as Bermuda and the Madeira Islands; ships

subject to superstructure icing in extreme northern Atlantic from

October to May; persistent fog can be a maritime hazard from May to

September; hurricanes (May to December)

Environment - current issues:

endangered marine species include the manatee, seals, sea lions,

turtles, and whales; drift net fishing is hastening the decline of

fish stocks and contributing to international disputes; municipal

sludge pollution off eastern US, southern Brazil, and eastern

Argentina; oil pollution in Caribbean Sea, Gulf of Mexico, Lake

Maracaibo, Mediterranean Sea, and North Sea; industrial waste and

municipal sewage pollution in Baltic Sea, North Sea, and

Mediterranean Sea

Geography - note:

major chokepoints include the Dardanelles, Strait of Gibraltar,

access to the Panama and Suez Canals; strategic straits include the

Strait of Dover, Straits of Florida, Mona Passage, The Sound

(Oresund), and Windward Passage; the Equator divides the Atlantic

Ocean into the North Atlantic Ocean and South Atlantic Ocean

The 2003 CIA World Factbook · 第 191 / 3264 题