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Originally Posted by fatty
Question: how does the ice breaking off from the shelves and floating freely factor in to sea ice levels?
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Ice floating displaces the exact same amount of water that it is in itself water - something the media can't figure out as well as some others that I see. From a shelf however, if that shelf is land based, then you have something displacing water that was once not of that water, so in effect, you are adding water to water and it will rise.
This is not happening in the last year in either Antarctica or Alaska since both land masses are increasing their glacier ice like never before recorded. Alaska in particular has added more ice than it lost to its most famous glaciers for the first time in recorded history.
-S