"jeffbert" wrote:It seems to me that:I do not see how, even if the poles melt away, there would be a problem.
- some 70-80% of Earth's surface is covered by water
- much of the land is dry, little is covered by ice
- only a tiny fraction of the land's surface is covered by ice, ie., the Antarctic, etc.
- therefore, even if the ice melts, only that which is upon land will add to the oceans' depth, & this will be distributed over a much larger area than when it was frozen.
However, I do realize that the size of the land-based ice in cubic feet may be a bit larger than I imagine.
July 21 2009 is Lunar Perigee I expect record high tides with damage....

There maybe meteorological phenomena as well....