I don’t think the sea level would raise much if the ice melted...but it would spread out....Drop some ice cubes in a glass of water and when they melt, the water is at almost the same level as when you put them in the water..(I think)
Correct for ice already in the water (north pole, south pole margins). Land bound ice would flow into the oceans and raise the levels. Obviously not as high as Mount Everest all the way around.
I figure this supernatural event was, well, supernatural. The videos on that link are interesting and intriguing. Although they could also be from some remote warehouse in China I suppose.
And just like with the shroud, it probably won’t sway too many folks in what they already believe.
That only works for ice that's already in the water, such as icebergs.
We've got millions of square miles of ice piled up on land surfaces, though. If that were all to melt, it would definitely raise sea levels, because it would add to the amount of water in the oceans. But, how much it would raise it, I don't know.