the remainder a central
basin interrupted by three submarine ridges (Alpha Cordillera,
Nansen Cordillera, and Lomonosov Ridge)

Elevation extremes:
lowest point: Fram Basin -4,665 m
highest point: sea level 0 m

Natural resources:
sand and gravel aggregates, placer deposits, polymetallic nodules,
oil and gas fields, fish, marine mammals (seals and whales)

Natural hazards:
ice islands occasionally break away from northern Ellesmere Island;
icebergs calved from glaciers in western Greenland and extreme
northeastern Canada; permafrost in islands; virtually ice locked
from October to June; ships subject to superstructure icing from
October to May

Environment - current issues:
endangered marine species include walruses and whales; fragile
ecosystem slow to change and slow to recover from disruptions or
damage; thinning polar icepack

Geography - note:
major chokepoint is the southern Chukchi Sea (northern access to
the Pacific Ocean via the Bering Strait); strategic location between
North America and Russia; shortest marine link between the extremes
of eastern and western Russia; floating research stations operated
by the US and Russia; maximum snow cover in March or April about 20
to 50 centimeters over the frozen ocean; snow cover lasts about 10
months

Economy Arctic Ocean

Economy - overview:
Economic activity is limited to the exploitation of natural
resources, including petroleum, natural gas, fish, and seals.

Transportation Arctic Ocean

Ports and harbors:
Churchill (Canada), Murmansk (Russia), Prudhoe Bay (US)

Transportation - note:
sparse network of air, ocean, river, and land routes; the Northwest
Passage (North America) and Northern Sea Route (Eurasia) are
important seasonal waterways

Transnational Issues Arctic Ocean

Disputes - international:
some maritime disputes (see littoral states)

This page was last updated on 20 October, 2005

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@Argentina

Introduction Argentina

Background:
Following independence from Spain in 1816, Argentina experienced
periods of internal political conflict between conservatives and
liberals and between civilian and military factions. After World War
II, a long period of Peronist authoritarian rule and interference in
subsequent governments was followed by a military junta that took