Antarctica is frozen over time and deeply inhospitable alive. But what would the frozen continent seem like if it lost its ice? That is an interesting and complex question. Antarctica is a lot more than sheets of ice. Beneath it is really a landscape of mountains, hills, and rolling plains, dissected by valleys troughs, and deep gorges.
Antarctica may be the world's remotest and most difficult continent to visit. But even though it is more difficult, one can visit up to the South Pole. There are even a number of accommodations in Antarctica for visitors and surprisingly these vary from roughing it, to comparative luxury.
Antarctica Has Two Ice Sheets And it has Two Major Parts
Today Antarctica is a frigid continent entombed (and depressed) with ice. The frozen continent is included in 2 major and geologically distinct parts bridged by a vast ice sheet. They are called East Antarctica and West Antarctica.
East Antarctica:
East Antarctica may be the larger of the two halves and it is round the size of the United States. It is made up of continental crust and is included in a massive ice sheet averaging around 1.6 miles in thickness.
- Larger: East Antarctica Is By Far The Larger Half
West Antarctica:
West Antarctica is the smaller area of the continent and it is made up of a mosaic of small blocks of continental crust taught in West Antarctic Ice Sheet and an Andean-like mountain chain forming the Antarctic Peninsula.
- Antarctic Peninsula: The Antarctic Peninsula is Part of West Antarctica
While maps show the western part of the continent above sea level – that is only due to the massive sheet of ice onto it. The majority of the West Antarctic Ice Sheet is grounded below sea level – in places, it's over 1.5 miles below sea level.
So when the ice was to melt, point about this side from the continent would be below sea level and would be a patchwork of islands.
The Sheer Quantity of Ice Entombing Antarctica
There are two massive ice sheets covering Antarctica. They cover the vast majority of the landmass with only 2.4% from it free from ice (called Antarctic Oasis). They cover a place close to 14 million square kilometers.
- Ice Cover: 97.6% from the Continent
- Ice-Free: 2.4% of The Continent
It's hard to comprehend precisely how thick the ice sheets are. They average 2,160 meters thick and have a maximum depth of 4,776. To put that in context, Mount Mitchell (the greatest peak within the Appalachians) is only 2,037 meters high above sea level. While Mount Elbert is the highest mountain within the Rockies at 4,401 meters.
- Thickness: The utmost Thickness Is Greater Compared to Height Of The Highest Mountain From the Rockies
That made Antarctica the greatest continent in the world by far. This ice accounts for over 90% of the world's ice and 70% of all of the world's freshwater.
What Antarctica Appears like Without Its Ice
NASA has compiled a map of what Antarctica would look like without ice. It had been according to data published by scientists in the British Antarctic Survey during the last two decades. It uses surface elevation reading and ice thickness data which were measured with ice-penetrating radar.
The map is called Bedmap2 and uses 15 million more measurements because the old map from 2001. It revealed that Antarctica's average bedrock depth, deepest point, and ice thickness were all greater than previously thought.
- Bedmap2: The NASA Map Showing Antarctica Without Ice
Antarctica even has volcanoes beneath the ice. They are known as “subglacial volcanoes” by the word “glaciovolcanism.” More and more volcanoes are now being learned about under Antarctica. Previously 47 maintained however in 2022 it had been announced that another 91 new volcanoes have been identified. So far 138 volcanoes happen to be identified in West Antarctica alone.
But Its More Complicated
When considering how much of Antarctica could be above sea level if ice would visit are a number of points to consider. One is a hypothetical question of what if the ice sheet only agreed to be removed and jettisoned into space or something. Another consideration is if the ice melted (and so stayed on earth and raised the ocean levels). That scenario would also imply that many coastlines all over the world would change (Florida e.g. would be gone).
- Rising Sea Levels: If Antarctica's Ice Melted Sea Levels Would Rise By 216 feet or 65 Meters
Another real question is dependent on timing. There'd become more and more Antarctic land poking above sea level with time because of post-glacial rebound – like out of the box happening in Canada (especially round the Hudson Bay) and Finland.
- Post-Glacial Rebound: The Continent Would Slowly Rise Back Up After Being Compressed Through the Weight Of The Island
