Effect of Collapsed Ice Sheet Revised By RANDOLPH E. SCHMID, AP posted: 12 HOURS 5 MINUTES AGOcomments: 316filed under: Science NewsPrintShareText SizeAAAWASHINGTON (May 14) - The global sea level will only rise about 10 feet if the West Antarctic ice sheet collapses. While that may not sound so great to residents of coastal cities like New York or Los Angeles, it's only about half the previously predicted rise. If the West Antarctic ice sheet collapses, the global sea level will rise about 10 feet, researchers said in the May 15 edition of the journal Science. That's about half the rise that was previously predicted. Scientists say most of the increase would occur along the East and West Coasts of the U.S. Here, ice melts near Biscoe Island in Antarctica. Researchers led by Jonathan L. Bamber of the University of Bristol in Britain report their recalculation of the hazard in Friday's edition of the journal Science. However, they add, the maximum increase is expected along the East and West Coasts of the United States, where the water could rise as much as 25 percent more than in other regions. The West Antarctic Ice Sheet can be unstable and has long concerned researchers who fear it could collapse as a result of global warming. Previous studies had estimated that failure of the ice sheet, causing it to slide into the ocean, would raise global seas levels by 5-to-6 meters, or 16-to-19 feet. Sea Level Rise And this is the reason so many of us question the effects of global warming or if it is even caused by human activity. What will the next revision state? Maybe they will again revise this to a sea level rise of only three feet. Maybe they will say "oops, we were just a little off on our models".