Posted on 08/27/2010 9:06:50 PM PDT by TaraP
The ice seems to be fracturing all over the Arctic once again
A huge chunk of ice about the size of Bermuda has cracked off Canadas largest remaining Arctic ice shelf.
The ancient slab of ice, measuring about 50 square kilometres in area and almost 400 metres thick, broke away from the Ward Hunt Ice Shelf on Ellesmere Islands northern coast last week, the Canadian Ice Service said Aug. 25.
The whole northeast quarter seems to have gone, said Trudy Wohlleben, a senior ice forecaster at the service, who first noticed cracks developing on the shelf in early August. Satellite images over the last week have confirmed the huge chunk of ancient ice shelf has broken away, she says.
The breakup points to the profound change underway in the Arctic and the accelerating loss of a unique and majestic part of Canadas landscape, says John England, University of Alberta earth scientist.
The Ward Hunt is the largest of the remaining ice shelves that have clung to Ellesmere Island for 3,000 to 5,000 years. They contain the oldest sea ice in the northern hemisphere, England says, and have no counterpart in Greenland or Russia.
Theyre our California redwoods, theyre our pyramids, theyre a really unique, intriguing aspect of our Canadian landscape, says England. And they are disappearing.
The fracturing of such a large chuck of the Ward Hunt is one of the more remarkable changes Wohlleben and her colleagues have seen in the Arctic this summer, which has seen plenty of action.
This year, the ice seems to be fracturing all over the Arctic once again, Wohlleben said in an interview, noting that 2009 had been quiet compared to 2008 and 2007.
Wohlleben was also the first to spot a gargantuan chunk of ice that calved off Greenlands Petermann Glacier this summer. It is about 251 square kilometres in size - four times the size of Manhattan - and is drifting toward Canadian waters.
While the Greenland iceberg is much bigger, England says the loss of such a big chunk of the Ward Hunt shelf is in some ways more significant because the ice is so old.
Its not like these things come and go every few years or decades, says England, noting that it would take centuries of cold weather to regrow Ellesmeres ice shelves. We cant just sweep it under the carpet and say Its one of natures cycles, he said of the disintegration that shows little sign of letting up.
There are still several weeks to go before the Arctic ice pack reaches its minimum for this year. At this stage Wohlleben says it doesnt look as if this will break the record ice retreat seen in 2007.
But it will be close, she said.
Well the Moon seems to be out of Orbit lately...Tonight it rose to the far left, with Jupiter following close by or maybe that is Venus?
Why don't they wonder where in the hell the 5,000,000yo chunks are?
BLASPHEMER!!! YOU DARE TO MOCK GAIA????!!!!
Was there any gravity on earth before Newton got whacked with an apple?
Close! The tilt of Earth’s axis does not change (much). The tilt between the rotational axis (line between the North and South geographic poles) and the plane formed by the orbit of the earth around the sun (nominally 23 degrees, 27 minutes, 5.55 seconds of arc) cause the changing of the seasons and the inversion of the curve of ice formation between north and south poles. If I missed your sarcasm, I apologize in advance.
“The Ward Hunt is the largest of the remaining ice shelves that have clung to Ellesmere Island for 3,000 to 5,000 years.”
When it comes to glaciers, that is an eyeblink.
I didn’t know Karl Rove was up in Canada? Using his ice-fracturing machine?
5000 years means it started growing AFTER our present interglacial period. This is such a non issue it isnt funny.
Uh, how do they know how ‘ancient’ this ice shelf actually is? It may just break off every 5000 years or so; how would they know otherwise?
Collapse of ancient Ellesmere ice shelf *stuns scientists* who were standing on it
Hurry, we must raise taxes before more ice melts.
These people promote progress and change except when they are not causing it....then, they become conservationists and traditionalists.
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“Especially when being used for intended purpose of cooling adult beverage”
and that is why I do not add water to my scotch.....
Yeah, before Newton, thins fell up.
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