One study, what about all those that have shown highly significant losses in the high arctic and in the antarctic?
On Wed, Sep 8, 2010 at 4:16 PM, Jerry Barnes <[email protected]> wrote: > > New study slashes estimate of icecap > loss<http://www.physorg.com/news203066251.html> > > Excerpt: > > In the last two years, several teams have estimated Greenland is shedding > roughly 230 gigatonnes of ice, or 230 billion tonnes, per year and West > Antarctica around 132 gigatonnes annually. > > Together, that would account for more than half of the annual > three-millimetre (0.2 inch) yearly rise in sea levels, a pace that compares > dramatically with 1.8mm (0.07 inches) annually in the early 1960s. > > But, according to the new study, published in the September issue of the > journal *Nature Geoscience*, the ice estimates fail to correct for a > phenomenon known as glacial isostatic adjustment. > > This is the term for the rebounding of Earth's crust following the last Ice > Age. > > Glaciers that were kilometers (miles) thick smothered Antarctica and most of > the northern hemisphere for tens of thousands of years, compressing the > elastic crust beneath it with their titanic weight. > > When the glaciers started to retreat around 20,000 years ago, the crust > started to rebound, and is still doing so. > > This movement, though, is not just a single vertical motion, lead researcher > Bert Vermeersen of Delft Technical University, in the Netherlands, said in > phone interview with AFP. > > "A good analogy is that it's like a mattress after someone has been sleeping > on it all night," he said. > > The weight of the sleeper creates a hollow as the material compress > downwards and outwards. When the person gets up, the mattress starts to > recover. This movement, seen in close-up, is both upwards and downwards and > also sideways, too, as the decompressed material expands outwards and pulls > on adjacent stuffing. > > Another inconvenient truth? > > > J > > - > > No man's life, liberty, or property is safe while the legislature is in > session. - Mark Twain > > The artificial aristocracy is a mischievous ingredient in government, and > provisions should be made to prevent its ascendancy. - Thomas Jefferson > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology-Michael-Dinowitz/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-community/message.cfm/messageid:327084 Subscription: http://www.houseoffusion.com/groups/cf-community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-community/unsubscribe.cfm
