"no it's an effect of global warming" So now icebergs are due to 'global warming'? ... hilarious. Reality check: Icebergs and break off of ice sheets have been happening for millions of years, even during ice ages. We don't know whether it would have happened anyway, and we dont know if there was local/regional effects which overwhelm any global warming trends.
the one correct answer to the question is: The ice sheet will eventually melt and it will have no impact on global warming.
Global Warming Counterpoint
Echoing the growing alarm of scientists, the April 3 cover of Time carried a special report on global warming that urged readers to "Be worried. Be very worried." NASA meteorologists tell us that 19 of the hottest 20 years on record occurred after 1980, the magazine reported, along with other signs.
That might seem like evidence of global warming, but geology professor Robert Giegengack takes the long view. "Here's what we know," he told listeners who came to one of last spring's Penn Science Cafes. "Is the globe warming?" he asked. "Yes." What we're not sure of, he said, is why.
Giegengack called the popular idea of global warming — the suggestion that burning fossil fuels has increased the con¬centration of carbon dioxide, which has warmed up the atmosphere, which has led to melting ice sheets, which has raised sea levels — a "simplistic hypothesis."
"There's a very well-documented history of climate now that goes back many millions of years," he told the crowd. Earth scientists have collected piles of data from ice cores, seabed samples and other "natural archives" to reconstruct ancient climates. The data show there were periods when the carbon-dioxide concentration in the atmosphere was much higher than today and the Earth was warmer, but there were also times when the Earth was glaciated despite vastly higher levels of carbon dioxide. That record seems to violate the one-to-one correspondence between more greenhouse gases and higher temperatures. "Over 600 million years there's been lots and lots of dramatic climate change and in most cases we don't really have a mechanism to explain what happened," Giegengack observed. For much of Earth's history, the globe has been warmer than any of the warm-up projec¬tions for this century, he said, and the natural archives document eras of climate change — warming and cooling — far more drastic than the warming trend underway now. "Those of us who study the long-term variation of climate are impressed by the enormous complexity of the climate system and the probability that the cause-and-effect relationship is not as starkly simple as the anthropogenic-greenhouse-gas-global-warming enthusiasts would have us believe." The real short-term environmental issues, Giegengack argued, include threats like tobacco, stored nuclear weapons, land mines left behind in war zones and more. "We're killing off all the fish; we're .damaging the soil; we're poisoning our water. Biodiversity is plummeting; ancient bacterial diseases are burgeoning. We're not paying attention to the real problems. Global warming doesn't even make it into my top 10."
From "Arts and Sciences" Magazine of the University of Pennsylvania, Spring 2006.....
2006-07-02 06:37:36
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answer #1
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answered by Patrick M 2
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Its actually quite possible that that ice shelf is going to melt and increase the worlwide sea level, not by much but somewhat. Like they say, were about 5 mdegrees away from haveing the poles melt enough so that the movie 'The day after tommorow' will not be Sci-Fi, but in fact reality.
2006-07-02 12:38:47
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answer #2
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answered by darkblade_kalki 2
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The ice shelf that broke off is floating around in antarctic water making a nusance of itself.Last month it bumped into antarctica and broke another chunk off of it.It will hang around slowly melting and breaking up till the pieces all float away and melt.
2006-07-02 13:25:04
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answer #3
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answered by bergle 2
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Pieces of glaciers break off all the time, remember the Titanic? It is interesting to note that glaciers are being measured as larger and denser in a recognized cyclical nature. Hum
2006-07-02 13:58:35
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answer #4
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answered by Kathi 6
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