Monday, 2 March 2015

Amazing World Under Antarctic Ice

The Antarctic ice sheet is one of both polar ice caps of the Earth. It covers concerning 98 % of the Antarctic continent and is the largest single mass of ice in the world. It covers an area of nearly 14 million square km (5.4 million sq. miles) and consists of 26.5 million cubic km of ice (6.36 million cubic miles). That is, roughly 61 percent of all fresh water on the Earth is held in the Antarctic ice sheet, an amount matching to 70 m of water around the world's oceans. In East Antarctica, the ice sheet relaxes on a major land mass, but in West Antarctica the bed can encompass greater than 2,500 m below water level. If the ice sheet were not there, much of the land in this area would be seabed.

As opposed to the melting of the Arctic sea ice, sea ice around Antarctica has actually increased in recent times. The reasons for this are not fully understood, but recommendations include the weather effects on ocean and atmospheric circulation of the ozone gap, and/or cooler ocean area temperatures as the heating deep waters thaw the ice racks.

CARBON DIOXIDE degrees were then regarding 760 ppm and had actually been decreasing from earlier levels in the thousands of ppm. Carbon dioxide decline, with a tipping point of 600 ppm, was the primary agent forcing Antarctic glaciation. The glaciation was favored by a period when the Earth's orbit favored awesome summertimes yet Oxygen isotope ratio pattern marker changes were also large to be detailed by Antarctic ice-sheet development alone indicating an ice age of some dimension.

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