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The melting of all of the ice in West Antarctica would increase global sea-level rise to 4.3 m (14 ft 1 in). [98] Mountain ice caps that are not in contact with water are less vulnerable than the majority of the ice sheet, which is located below sea level.
Nearly all of Antarctica is covered by a sheet of ice that is, on average, at least 1,500 m (5,000 ft) thick. Antarctica contains 90% of the world's ice and more than 70% of its fresh water. If all the land-ice covering Antarctica were to melt — around 30 × 10 ^ 6 km 3 (7.2 × 10 ^ 6 cu mi) of ice — the seas would rise by over 60 m (200 ft ...
A map of West Antarctica. The total volume of the entire Antarctic ice sheet is estimated at 26.92 million km 3 (6.46 million cu mi), [2] while the WAIS contains about 2.1 million km 3 (530,000 cu mi) in ice that is above the sea level, and ~1 million km 3 (240,000 cu mi) in ice that is below it. [20]
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From 1992 to 1996, the two ice sheets – which hold 99% of the world’s freshwater ice – were shrinking by 116 billion tons (105 billion metric tons) a year, two-thirds of it from Antarctica.
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The melting of all the ice in West Antarctica would increase the total sea level rise to 4.3 m (14 ft 1 in). [118] However, mountain ice caps not in contact with water are less vulnerable than the majority of the ice sheet, which is located below the sea level. [119] Its collapse would cause ~3.3 m (10 ft 10 in) of sea level rise. [120]
The melting of all of the ice in West Antarctica would increase global sea-level rise to 4.3 m (14 ft 1 in). [24] Mountain ice caps that are not in contact with water are less vulnerable than the majority of the ice sheet, which is located below sea level.