My Zimbio
Top Stories

Monday, April 17, 2017

Greenland Ice Cracking!

NASA photos capture a strange new crack in a massive Greenland glacier and we're all probably doomed 

Maria Gallucci, Mashable 

When ice shelves break off into icebergs it doesn't directly increase sea levels, because the ice is already floating in the ocean, like an ice cube in a glass.
However, because the ice shelves act like doorstops to the land-based ice behind them, if the shelves disappear, the glaciers can start moving into the sea. This would add new water to the ocean and therefore raise sea levels.

Published on Apr 17, 2017
Nasa captures first images of a 'worrying' new crack that has appeared on one of Greenland's largest glaciers

Thanks to: NASA for video
In the case of Antarctica's Pine Island Glacier, researchers said that warming waters causing cracks to form beneath "provides another mechanism for rapid retreat of these glaciers, adding to the probability that we may see significant collapse of West Antarctica in our lifetimes."
Greenland, Antarctica, the message is we're all probably doomed. 

This false-color image from a NASA satellite shows massive ice island that broke free from Petermann Glacier in Greenland floating down the fjord on July 16, 2012. Nearly two years earlier in July 2010, another large iceberg, estimated at about 97 square miles (251 square kilometers), calved from the Petermann Glacier. Now scientists have found another large — and unexpected — crack in the glacier. (Jesse Allen and Robert Simmon / NASA Earth Observatory image using data from NASA / GSFC / METI / ERSDAC / JAROS and U.S./Japan ASTER Science Team.)

Scientists just found a strange and worrying crack in one of Greenland's biggest glaciers - Alaska Dispatch News

Scientists examining satellite images of one of Greenland's largest glaciers believe they have found an unexpected new crack in its floating ice shelf that could contribute to a dramatic break in coming years.

The Petermann glacier, located in the high Arctic at 80 degrees North latitude, is one of the most important outlets by which the Greenland ice sheet extends and flows into the sea. In 2010 and 2012 (see photo), it lost extremely large pieces, each several times the size of Manhattan, from its ice shelf, which floats on top of the waters of a fjord whose depth exceeds that of the Grand Canyon.

These changes captured the world's attention – and greatly shrank this floating shelf that stabilizes the glacier by attaching to the walls of the fjord in which it lies. That's a big deal because Petermann glacier holds back about a foot of potential sea level rise from the Greenland ice sheet.

Since the drama of 2010 and 2012, another large crack has begun to open and stretch towards the center of Petermann's ice shelf – which suggests the shelf could lose another large "ice island" soon.

That's bad enough, but this week Stef Lhermitte, a researcher at Delft University of Technology in the Netherlands who studies Greenland using satellites, posted images suggesting the development of a second and different sort of crack, one that could potentially link up with the first one.

Scientists just found a strange and worrying crack in one of Greenland's biggest glaciers - Alaska Dispatch News

See Also:

Antarctica Splitting in Half-Strange Events Detected Worldwide

'via Blog this'

No comments:

Post a Comment

10 Day Weight Loss Pills

Popular Posts



Curious about what the future holds? Click here to find out how you can receive a 10 minute psychic reading from Psychic Source. - The Best Free Online CalculatorŠ½

Fine Art - Painting Lessons: Real Art!
What is Bio-Farming? Can anyone do it?
Related Posts Plugin for WordPress, Blogger...

My Zimbio
Top Stories
My Zimbio
Top Stories Get 100 FREE Visitors to Your Website!
eXTReMe Tracker
AyurCat for Cat Health Care