NAVEGACION ANTARTICA - Iho-ohi.net

ANTARCTICA
Enclosed by cold sea currents
Antarctic seas present a simple pattern of
oceanic circulation: clockwise
Antarctic seas with coldest summers; air
temperatures between 0 o & -4 o C
Sea ice surrounds the continent and the
fresh ice
Old sea ice, of several years, commonly
lacks pronounced patterns of pools and
drainage
Sea ice of minor consistence
Presents the major stational variation of sea
ice extension: above the 75% of covered
surface
ARTIC
Affected by the Gulf calid current
Three different patterns of oceanic
circulation: clockwise, counterclockwise
and meridional
More calid summers, with significative air
temperatures above de 0 o C
Sea ice is surrounded by the continent and
fresh ice
Old sea ice, of several years, commonly
shows consistence patterns of pools and
drainage
Sea ice harder
Confined sea ice, without presenting such
grate Antarctic stational variations of extent
* Research *
Technical-scientific knowledge of the region
in general poor, limited to summer
campaigns and activities
In the past, predominant summer activities
and annual settlements
Today, annual intense activities of selected
countries. The rest maintain past conditions
Wide and exhaustive technical-scientific
knowledge of the region, extended to the
Antarctic, by several institutions and
universities of the Norther Hemisphere
In the past, all year long activities of the
countries involved in the region
Today, as in the past, with great intensity of
investigations
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