noun
- a change in the level of the sea relative to the land, caused by factors such as melting ice sheets or changes in ocean volume
Usage: geology; also spelled 'eustasy'
Examples
- Eustacy during the last ice age caused sea levels to drop by over 100 meters.
- Scientists study eustacy to understand how climate change affects coastal regions.
- The melting of polar ice sheets contributes to positive eustacy in modern times.
- Eustacy is an important factor in understanding ancient shorelines and sediment deposits.