Glacial rebound, also known as isostatic rebound, is the rise of the Earth’s crust after the melting of a heavy ice sheet, which had previously caused the crust to depress. This process continues for thousands of years after the ice melts and is significant in studying the effects of glaciation on the Earth’s crust, sea-level changes, and post-glacial landscapes.
Reference: Peltier, W. R. (2004). Global Glacial Isostasy and the Surface of the Ice-Age Earth: The ICE-5G (VM2) Model and GRACE. Annual Review of Earth and Planetary Sciences.