Head For the Hills, Stock Up The Larder, And Git Yer Guns Loaded, Another Huge Antarctic Ice Shelf has Collapsed

Stock up the foot, clean the guns, and get your waders on- the collapse of the Antarctic ice shelf is in high gear. The Wilkins ice shelf, an area 160 square miles large, seven times the size of Manhattan, has suddenly collapsed. Scientists had the rare opportunity to film the collapse when they saw it happening over satellite images and diverted more lenses to cover it, even getting an airplane in the air to shoot video and photos.

There are two kinds of polar ice- sea ice and land ice (not the scientific names, but they’ll do here). The sea ice sits in the ocean, most of it sitting below water level. When those ice shelfs break off they don’t have much of an impact on sea levels. When the land ice- the glaciers sitting on the ground above sea level- collapses, it adds new mass into the ocean and can quickly raise sea levels across the globe.

The Antarctic land ice is being held back by the now quickly collapsing sea ice. As the world’s temperature rises snow and ice melt and run down to the ground through the glacier in giant ice tunnels. The water follows the slope of the land down to the ocean and acts like a lubricant between the ground and the glacier ice above. When the sea ice has collapsed enough not to hold up the lubricated land ice, it can all fall apart in a matter of hours and days.

How do you think the world would react to a 20 foot rise in sea levels over the course of a day? It’d be pure chaos and madness, epic disaster movie style.

Someone smarter than me has put together a Google Maps mashup that will show you what rising sea levels look like on a map of the world meter by meter. See for yourself. New York City would be really screwed.

The future will be nothing if not interesting.

Links [Huffington Post] & [The National Snow and Ice Data Center] & [The British Antarctic Survey]

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