1. Post #1
    I'm halving my usage of math each week.. but, apparently I'll never be able to quit.
    Bradyns's Avatar
    October 2009
    5,246 Posts
    An ice island twice the size of Manhattan has broken off from Greenland's Petermann Glacier, according to researchers at the University of Delaware and the Canadian Ice Service. The Petermann Glacier is one of the two largest glaciers left in Greenland connecting the great Greenland ice sheet with the ocean via a floating ice shelf.
    ==========================================

    ==========================================
    An ice island twice the size of Manhattan has calved from Petermann Glacier off northern Greenland.
    ==========================================
    Andreas Muenchow, associate professor of physical ocean science and engineering in UD's College of Earth, Ocean, and Environment, reports the calving on July 16, 2012, in his "Icy Seas" blog (http://icyseas.org/). Muenchow credits Trudy Wohleben of the Canadian Ice Service for first noticing the fracture.


    The discovery was confirmed by reprocessing data taken by MODIS, the Moderate Resolution Imaging Spectroradiometer aboard NASA's Terra and Aqua satellites.


    At 46 square miles (120 square km), this latest ice island is about half the size of the mega-calving that occurred from the same glacier two years ago. The 2010 chunk, also reported by Muenchow, was four times the size of Manhattan.


    "While the size is not as spectacular as it was in 2010, the fact that it follows so closely to the 2010 event brings the glacier's terminus to a location where it has not been for at least 150 years," Muenchow says.


    "The Greenland ice sheet as a whole is shrinking, melting and reducing in size as the result of globally changing air and ocean temperatures and associated changes in circulation patterns in both the ocean and atmosphere," he notes.


    Muenchow points out that the air around northern Greenland and Ellesmere Island has warmed by about 0.11 +/- 0.025 degrees Celsius per year since 1987.


    "Northwest Greenland and northeast Canada are warming more than five times faster than the rest of the world," Muenchow says, "but the observed warming is not proof that the diminishing ice shelf is caused by this, because air temperatures have little effect on this glacier; ocean temperatures do, and our ocean temperature time series are only five to eight years long -- too short to establish a robust warming signal."


    The ocean and sea ice observing array that Muenchow and his research team installed in 2003 with U.S. National Science Foundation support in Nares Strait, the deep channel between Greenland and Canada, has recorded data from 2003 to 2009.


    The Canadian Coast Guard Ship Henry Larsen is scheduled to travel to Nares Strait and Petermann Fjord later this summer to recover moorings placed by UD in 2009. These mooring data, if recovered, will provide scientists with ocean current, temperature, salinity and ice thickness data at better than hourly intervals from 2009 through 2012. The period includes the passage of the 2010 ice island directly over the instruments.


    According to Muenchow, this newest ice island will follow the path of the 2010 ice island, providing a slow-moving floating taxi for polar bears, seals and other marine life until it enters Nares Strait, the deep channel between northern Greenland and Canada, where it likely will get broken up.


    "This is definitely déjà vu," Muenchow says. "The first large pieces of the 2010 calving arrived last summer on the shores of Newfoundland, but there are still many large pieces scattered all along eastern Canada from Lancaster Sound in the high Arctic to Labrador to the south."


    Prior to 2010, the last time such a sizable ice island was born in the region was 50 years ago. In 1962, the Ward Hunt Ice Shelf, on the northern coast of Ellesmere Island in Nunavut, Canada, calved a 230-square-mile island.
    ==========================================
    Source:
    http://www.sciencedaily.com/releases...0717100027.htm
    Trends.

    See also:
    'Larsen Ice Shelf'
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  2. Post #2
    Supercocks
    Daniel Smith's Avatar
    September 2010
    8,719 Posts
    Shell Oil thread crossovers, anyone?
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  3. Post #3
    ASK ME ABOUT MY BEN FOLDS FETISH
    FreakySoup's Avatar
    April 2010
    6,617 Posts
    Now all we need is a Titanic four times the size of Manhattan
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  4. Post #4
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  5. Post #5
    JXZ
    JXZ's Avatar
    May 2012
    831 Posts
    I've always wanted a beachfront property.
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  6. Post #6
    IKTM's Avatar
    September 2011
    796 Posts
    The sound it made when it cracked must have been loud as hell.
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  7. Post #7
    Gold Member
    Paramud's Avatar
    November 2008
    8,973 Posts
    Let's all live on it.

  8. Post #8
    CabooseRvB's Avatar
    September 2009
    12,196 Posts
    Poseidon just needs another block of ice to water down his scotch.
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  9. Post #9
    Gold Member
    BCell's Avatar
    November 2006
    6,451 Posts
    Why don't we take the ice glacier island and move it to Antarctica?
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  10. Post #10
    Gold Member
    Used Car Salesman's Avatar
    April 2009
    8,911 Posts
    If that was heading toward a Shell oil platform I'm not sure they could do much about it...

  11. Post #11
    101% Asian
    Banhfunbags's Avatar
    April 2007
    1,966 Posts
    Why don't we take the ice glacier island and move it to Antarctica?
    Relevant
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  12. Post #12
    Gold Member
    dannass's Avatar
    December 2005
    1,208 Posts
    Dibs on taking over that glacier for my own personal reasons.







    errday

  13. Post #13
    Gold Member
    Paradox621's Avatar
    April 2008
    783 Posts
    Dibs on taking over that glacier for my own personal reasons.
    errday
    32° melt ice errday
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  14. Post #14
    Gold Member
    Electrocuter's Avatar
    December 2005
    5,979 Posts
    If that was heading toward a Shell oil platform I'm not sure they could do much about it...
    Oil platforms float, wouldn't they be able to tug it away from the ice's path?

  15. Post #15
    OvB
    Facepunch resident scientist
    OvB's Avatar
    March 2007
    13,017 Posts
    Oil platforms float, wouldn't they be able to tug it away from the ice's path?
    If it's in shallow water they're usually directly anchored to the ground. They would have to cap the well and abandon the rig, and hope it doesn't hit it. If it's a floating one they would have to cap the well, send out a tugboat and pull it out of the way. Certainly do-able but it still leaves room for disaster. When hurricanes enter the Gulf of Mexico it's almost standard procedure. Cap the well, abandon rig, hope for the best. If the well is capped then in the event of a catastrophic failure, it won't leak. Catastrophic failure being 100% loss of the rig. Aka sinking. Which happens quite often during hurricanes.

    Edited:

    Now, if the glacier was deep enough, and it scrapped off the top of the wellhead. You would have quite the nasty disaster on your hands.