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The images released Wednesday show the massive chunk of ice breaking off of the Petermann Glacier on the northwestern coast of Greenland. The glacier produced a similar ice island twice as large in 2010.

NASA said the crack in the glacier had been visible since 2001, and that its polar-orbiting Aqua satellite had observed the break on July 16-17.

Oceanographer Andreas Muenchow of the University of Delaware said that while the icebergs seem large, most of the glacial melting takes place 600 meters (1,800 feet) below the surface, where the glacier meets bedrock and the ocean water is much warmer than at the surface.

"The dominant mass loss is via ocean melting from below. This dominant process is not visible, it is not possible to capture it with eye-catching images," he wrote on his blog at icyseas.org.

"Furthermore, and this appears counter-intuitive, the loss of area will have little direct effect on the ocean melting, because the 100-150 (-meter) thick floating ice shelf is bathed in ocean water near the freezing point."

Muenchow said the Atlantic waters melting the glacier appear to be warming, but that records only go back to 2003.

"Some changes are dramatically visible, such as the discharge of large ice islands," he wrote. "Some changes, perhaps more important, are not."

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Sun May 19 09:05:43 SAST 2013 ::

Jul 19, 2012

CheeseBoy

These sort of stories are nothing more than propaganda promoting the global warming fake bullsh!t.

there is no direct evidence linking mankind's habits to global warming.

the Earth's climate has been changing since before the dawn of man. matter of fact it was even more chaotic

the ice age, mass extinction of the dinosaurs etc are events that took place by themselves. no amount of human activity caused these events. no amount of human activity can influence the current climate change.

people wake up.
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Jul 19, 2012

GORRILAH

@cheeseboy u did woodwork in school asshole thats why u will never understand Science and Climatology masepahao. Sowetan must never publish your comments again jou moeskond.
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Jul 19, 2012

Tabza325is

@CheeseBoy, so do you think the Ozone whole that was created back in the days was not cuased by human activities, it was untill we corrected the lead emition into our atmosphere that we managed to repair the Ozone Layer, today the earth is no longer reflecting the sun rays like in the past why, it's because of the entrapped polution that's hovering in our atmosphere that the earth can no longer reflect the sun rays, which entrap the nuetrinos from the photonic particles coming from sun rays, this neutrinos when trapped inside the earth's atmosphere causes earth temperature to rise, thus global warming, the Iceberg in the poles is responsible for reflecting most of the sun ray radiation coming from the sun without this Iceberg the earth will continue absorbing more of this nuetrinos which hover radiation causing the climate to become warmer every decade.
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Jul 19, 2012

CheeseBoy

@GORRILAH
I don't know where you get off launching a personal insult like that but since you started I will oblige, now run off and go su.ck your mama pu.$$y fuckface.


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Jul 19, 2012

GORRILAH

@cheeseboy Go and tell your mama to wipe her stinking pu$$y before she has sex with your daddy to avoid having a brainless baby like u again.
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