1 glacier is holding enough liquid water to raise global waters by 12+ feet? Forgive me if I find this claim insanely incredulous.
I mean its been a while since I’ve done this sort of math but if the surface area of of a sphere is 4 pi R^2 and the radius of the earth is about 4,000 miles and 70% of the earth is covered by water, that means the surface area of the earth covered by water is something like 138000000 square miles. So the glacier would need to hold the volume of 12 feet * the volume of 138,000,000 square miles to raise water levels that far... so, color me dubious of the claim.
Sorry that’s 6 feet x 138,000,000 square miles... I still highly doubt that much volume is in any 1 glacier on earth.