Vast Antarctic ice shelf a few years from disintegration, says Nasa

Remnant of Larsen B Ice Shelf, about half the size of Rhode Island, is expected to break apart completely around the year 2020, adding to sea level rises

The research focused on a remnant of the so-called Larsen B Ice Shelf, which has existed for at least 10,000 years but partially collapsed in 2002. What is left covers about 625 sq miles (1,600 sq km), about half the size of Rhode Island.

Antarctica has dozens of ice shelves – massive, glacier-fed floating platforms of ice that hang over the sea at the edge of the continent’s coast line. The largest is roughly the size of France.

Larsen B is located in the Antarctic Peninsula, which extends toward the southern tip of South America and is one of two principal areas of the continent where scientists have documented the thinning of such ice formations.

“This study of the Antarctic Peninsula glaciers provides insights about how ice shelves farther south, which hold much more land ice, will react to a warming climate,” said Eric Rignot, co-author of the study and a glaciologist at Nasa’s Jet Propulsion Laboratory in Pasadena, California.

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