Spinning Yarn on the Antarctic
Continent: Poses a Masssive Challenge
The Antarctica Continent is a frozen desert and the coldest, driest, a nd windiest place on Earth. This is not a place that you would normally think
of for spinning yarn! It has the highest average elevation of all the continents, which results in even colder
temperatures. Antarctica has 90 per cent of the Earth's ice and 80 per cent of its fresh water.
The Antarctica Continent receives annual precipitation of only 200 mm (8 inches) along the coast and far less
inland. The South Pole itself receives less
than 10 cm (4 in) per year.
Centered asymmetrically around the South Pole, the Antarctica Continent is divided in two by the
Transantarctic Mountains close to the neck between the Ross Sea and the Weddell Sea. The portion west of the
Weddell Sea and east of the Ross Sea is called West Antarctica and the remainder East Antarctica, because they
roughly correspond to the Western and Eastern Hemispheres relative to the Greenwich meridian. (We think of many countries when we think of spinning yarn, but
Antarctica is not one of them!)
Containing many other mountains, both on the main continent and the surrounding islands, The Antarctica
Continent is home to more than 70 lakes that lie at the base of the continental ice sheet.
The Antarctica Continent is entirely surrounded by the Southern Ocean, comprising the southern Pacific,
Atlantic, and Indian Oceans. The coastline measures 17,968 km (11,165 mi) and is mostly characterized by ice
formations.
Both the Antarctica Continent and the Southern Ocean are key elements in the global weather system. The Antarctic
sea ice tends to be covered by thicker snow, which may accumulate to the point that the weight of snow pushes the
ice below sea level, causing the snow to b ecome flooded by salty ocean waters. Antarctic sea ice does not reach
the South Pole, extending only to about 75 degrees south latitude (in the Ross and Weddell Seas).
The Antarctica Continent supports a variety of sea life including penguins, blue whales, orcas, colossal squids and fur seals. Antarctic krill, which congregates in large schools,
is the keystone species of the ecosystem of the Southern Ocean, and is an important food organism for whales,
seals, leopard seals, fur seals, squid, icefish, penguins, albatrosses and many other birds.
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