You’re missing one of the effects gravity and ice have. From the article: > The second thing that happens is that this gravitational attraction that the ice sh

You’re missing one of the effects gravity and ice have. From the article: > The second thing that happens is that this gravitational attraction that the ice sheet exerts on the surrounding water diminishes. As a consequence, water migrates away from the ice sheet. The third thing is, as the ice sheet melts, the land underneath the ice sheet pops up; it rebounds. The land underneath the glacier or ice sheet (and it has to be on land, because ice displaces it’s melted volume when floating) pops up and increases in altitude (from the centre of earth) due to the drop in weight. This popping up effect will of course affect surround land not under the ice because rock isn’t that flexible.