Antarctica

Ice melange after Wilkins breakup, 2008

The Wilkins Ice Shelf is one of many thick slabs of ice that cling to Antarctica’s coast. Most of the continent’s ice sheet ends in one of these ice extensions that floats on the surrounding ocean...

Larsen B Ice Shelf, March 7, 2002

An ice shelf is a slab of ice, often hundreds of meters thick, that is attached to a coastline and extends over the adjacent ocean waters. Massive ice shelves hug the perimeter of Antarctica. One...

Satellite image of North Polar Cap of Mars, showing dune fields

Giant snow dunes in Antarctica help researchers decipher strikingly similar dunes on the Martian polar ice caps.

Besides occurring on the opposite side of the globe, Antarctic sea ice differs from Arctic sea ice in a couple of respects. First, the Arctic is an ocean basin largely surrounded by land whereas...

About 70 percent of the planet’s freshwater is locked up in ice sheets: massive ice bodies spanning more than 50,000 square kilometers (20,000 square miles). Our planet has two ice sheets, one...

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