Eustatic change refers to global variations in sea level caused by changes in the volume of the world’s oceans, typically driven by the melting or growth of ice sheets and thermal expansion of seawater. Eustatic changes are crucial in understanding past climate changes, sea-level history, and the development of coastal environments.
Reference: Fairbanks, R. G. (1989). “A 17,000-Year Glacio-Eustatic Sea Level Record: Influence of Glacial Melting Rates on the Younger Dryas Event and Deep-Ocean Circulation.” Nature, 342(6250), 637-642.