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
Economy Atlantic Ocean
Economy - overview:
The Atlantic Ocean provides some of the world's most heavily
trafficked sea routes, between and within the Eastern and Western
Hemispheres. Other economic activity includes the exploitation of
natural resources, e.g., fishing, the dredging of aragonite sands
(The Bahamas), and production of crude oil and natural gas
(Caribbean Sea, Gulf of Mexico, and North Sea).
Transportation Atlantic Ocean
Ports and harbors:
Alexandria (Egypt), Algiers (Algeria), Antwerp (Belgium), Barcelona
(Spain), Buenos Aires (Argentina), Casablanca (Morocco), Colon
(Panama), Copenhagen (Denmark), Dakar (Senegal), Gdansk (Poland),
Hamburg (Germany), Helsinki (Finland), Las Palmas (Canary Islands,
Spain), Le Havre (France), Lisbon (Portugal), London (UK), Marseille
(France), Montevideo (Uruguay), Montreal (Canada), Naples (Italy),
New Orleans (US), New York (US), Oran (Algeria), Oslo (Norway),
Peiraiefs or Piraeus (Greece), Rio de Janeiro (Brazil), Rotterdam
(Netherlands), Saint Petersburg (Russia), Stockholm (Sweden)
Transportation - note:
Kiel Canal and Saint Lawrence Seaway are two important waterways;
significant domestic commercial and recreational use of Intracoastal
Waterway on central and south Atlantic seaboard and Gulf of Mexico
coast of US
Transnational Issues Atlantic Ocean
Disputes - international: some maritime disputes (see littoral states)
This page was last updated on 18 December, 2003
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@Australia
Introduction Australia
Background:
Australia became a commonwealth of the British Empire in 1901. It
was able to take advantage of its natural resources to rapidly
develop its agricultural and manufacturing industries and to make a
major contribution to the British effort in World Wars I and II.
Long-term concerns include pollution, particularly depletion of the
ozone layer, and management and conservation of coastal areas,
especially the Great Barrier Reef. A referendum to change
Australia's status, from a commonwealth headed by the British
monarch to a republic, was defeated in 1999.
Geography Australia
Location:
Oceania, continent between the Indian Ocean and the South Pacific
Ocean
Geographic coordinates:
27 00 S, 133 00 E
Map references:
Oceania
Area:
total: 7,686,850 sq km
water: 68,920 sq km
note: includes Lord Howe Island and Macquarie Island
land: 7,617,930 sq km
Area - comparative:
slightly smaller than the US contiguous 48 states
Land boundaries:
0 km
Coastline:
25,760 km
Maritime claims: contiguous zone: 24 NM territorial sea: 12 NM exclusive economic zone: 200 NM continental shelf: 200 NM or to the edge of the continental margin
Climate:
generally arid to semiarid; temperate in south and east; tropical
in north
Terrain:
mostly low plateau with deserts; fertile plain in southeast
Elevation extremes:
lowest point: Lake Eyre −15 m
highest point: Mount Kosciuszko 2,229 m
Natural resources:
bauxite, coal, iron ore, copper, tin, gold, silver, uranium,
nickel, tungsten, mineral sands, lead, zinc, diamonds, natural gas,