Wikipedia:Reference desk/Archives/Science/2021 August 13

Welcome to the Wikipedia Science Reference Desk Archives
The page you are currently viewing is a transcluded archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

August 13

Sea level rise due to melting of all the ice on Antarctica

The sea level rise assuming that all the water gets distributed evenly over the oceans is about 58 meters. However, if the Antarctic ice were to completely melt, then the gravitational pull of the ice sheet on the water that currently causes a very large increase in sea levels near Antarctica, will also vanish. The question is then what the effect on the sea level will be if the Antarctic ice sheet were to completely melt on the sea level in Northern Europe and on the sea level near Antarctica. Count Iblis (talk) 00:18, 13 August 2021 (UTC)

There is a lot of doubt about how much the rise will be. See post-glacial rebound.41.165.67.114 (talk) 06:23, 13 August 2021 (UTC)

Do you see how the big river mouths of New England don't have big flooded river valleys like Chesapeake Bay (Susquehanna River) and Delaware Bay? That's because the rebound from the disappearance of the glacier in New England, Northern New Jersey, much of Pennsylvania, almost all of New York State, North Midwest and West was less than the sea level rise. Everything outside the immediate area of the land ice will sink if it melts. Sagittarian Milky Way (talk) 14:02, 13 August 2021 (UTC)

See here: https://www.whoi.edu/press-room/news-release/why-is-sea-level-rising-higher-in-some-places-along-u-s--east-coast-than-others 41.165.67.114 (talk) 06:38, 13 August 2021 (UTC)

What is the effect of the mostly contiguous part of Asia with a lot of rock above >3-4 thousand meters on the geoid of the Earth? How far south of the Himalayas is the geoid (which is at sea level) higher than the simple ellipsoid (the current world ellipsoid (WGS84) NOT the old Indian ellipsoid which has a different center of the Earth position, ellipticalness level and radius of curvature that were fit to follow the Indian area, not the average sea level geoid)? Sagittarian Milky Way (talk) 14:18, 13 August 2021 (UTC)