Open

Coming up

Don't miss

Replay


LATEST SHOWS

FASHION

Who's next in Paris, an event with international ready-to-wear and fashion accessories collections

Read more

ENCORE!

Tunisia's Carthage International Festival turns 50

Read more

THE OBSERVERS

Muslims and Christians clean up Bangui, and violence spirals out of control in Algeria's Gardaia

Read more

IN THE PAPERS

Is there such thing as 'telegenic' victims of war?

Read more

IN THE PAPERS

2014-07-22 07:21 IN THE FRENCH PRESS

Read more

THE INTERVIEW

Michel Sidibé, UNAIDS Executive Director

Read more

TALKING EUROPE

Dalia Grybauskaite, President of the Republic of Lithuania

Read more

WEB NEWS

Online scammers exploit MH17 crash

Read more

MEDIAWATCH

Too many graphic images from Gaza ?

Read more

  • Hollande says French warship delivery will ‘depend on Russia’s attitude’

    Read more

  • Israel identifies ‘missing’ soldier in Gaza

    Read more

  • A call for harmony in riot-hit ‘Little Jerusalem’ Paris suburb

    Read more

  • Colombia's Rodriguez signs ' €80m' contract with Real Madrid

    Read more

  • Ukraine rebels release bodies, black boxes from flight MH17

    Read more

  • Widodo poised to become Indonesian president

    Read more

  • An ‘explosion of violence’: French press reacts to Gaza protests

    Read more

  • Notorious ‘VIP’ prison in Paris closed for renovations

    Read more

  • Christians in Iraq's Mosul face execution or exodus

    Read more

  • Scores killed as Libyan militias fight over airport

    Read more

  • Ukraine football players refuse to return home after friendly in France

    Read more

  • China steps up communist education to guard against ‘moral decline’

    Read more

  • French rugby stars attacked with machetes and swords

    Read more

  • Hollande announces new military operation in West Africa

    Read more

Big chunk of Antarctic ice falling apart

Latest update : 2008-03-26

Antarctica's massive Wilkins Ice Shelf has begun disintegrating under the effects of global warming with 414 square kilometers already gone, the University of Colorado has found.

Antarctica's massive Wilkins Ice Shelf has begun disintegrating under the effects of global warming, satellite images by the University of Colorado's National Snow and Ice Data Center showed.

The collapse of a substantial section of the shelf was triggered February 28 when an iceberg measuring 41 by 2.4 kilometers (25.5 by 1.5 miles) broke off its southwestern front.

That movement led to disintegration of the shelf's interior, of which 414 square kilometers (160 square miles) have already disappeared, scientists say.

The Wilkins Ice Shelf is a broad plate of permanent floating ice 1,609 kilometers (1,000 miles) south of South America, on the southwest Antarctic Peninsula.

Now, as a result of recent losses, a large part of the 12,950 square kilometer (5,000 square mile) shelf is supported by a narrow 5.6 kilometer (3.5 mile) strip of ice between two islands, scientists said.

"If there is a little bit more retreat, this last 'ice buttress' could collapse and we'd likely lose about half the total ice shelf area in the next few years," NSIDC lead scientist Ted Scambos said in a statement.

"Wilkins is the largest ice shelf on West Antarctica yet to be threatened. This shelf is hanging by a thread," echoed David Vaughan of the British Antarctic Survey, which contributed data on the break-up.

Over the past half century, the western Antarctic Peninsula has experienced the steepest temperature increase on Earth, 0.5 degrees Celsius (0.9 Farenheit) per decade.

"We believe the Wilkins has been in place for at least a few hundred years, but warm air and exposure to ocean waves are causing a breakup," said Scambos, who first spotted the disintegration in March.

With the Antarctic summer drawing to a close, scientists do not expect the ice shelf to further disintegrate in the next several months.

"This unusual show is over for this season," said Scambos. "But come January, we'll be watching to see if the Wilkins continues to fall apart."

Ice shelf breakup in the Antarctic -- more than 13,000 square kilometers (5,000 square miles) have been lost over the past 50 years -- could significantly increase ocean levels around the world.

In 1995 the Larsen A Ice Shelf -- 75 kilometers (47 miles) long and 35 kilometers (22 miles) wide -- disintegrated, fragmenting into icebergs in the Weddell Sea.

In March 2002, a NASA satellite captured the collapse of Larsen B, which had a surface area of 3,850 square kilometers (1,486 square miles), was 200 meters (656 feet) high, and packed in 720 billion tonnes of ice. It took just 30 days to break apart.

According to some calculations based on the present sea level rise of three milimeters per year (0.11 inches), ocean levels could rise by 1.4 meters (4.6 feet) by the end of the century.

Date created : 2008-03-26

COMMENT(S)