Glacial isostatic adjustment
Glacial isostatic adjustment (GIA) is the process by which the Earth's crust adjusts to the melting of glaciers and ice sheets that previously covered large areas of the planet during ice ages.
GIA has significant geological and environmental implications, affecting coastal regions and sea levels, as well as influencing the Earth's crustal movements and seismic activity in these areas.
Scientists study GIA to understand its impact on the Earth's surface and to make predictions about future changes in land and sea levels.
As the massive ice sheets melted, the land beneath them started to rebound in a process known as glacial isostatic adjustment (GIA).