How thick is the ice in Antarctica?
Alex Waters, Gosport, Hampshire 90% of the world s ice (29 million cubic kilometres) is locked up in the Antarctic icecap. The average thickness of the icecap is 2.16 kilometres; the maximum known thickness is 4776 m at Terre Adelie. Without the ice, Antarctica may be the lowest lying continent; the greatest known depression of bedrock is the Byrd Subglacial Basin, at 2538 m below sea level due to the weight of the ice pushing the bedrock back into the Earth.
