from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A uniform worldwide change in sea level.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a worldwide change in sea level, especially one caused by melting ice
The dominant ones were tree rings, and ice cores, but others like varves, pollen, lichens, historic soil temperatures, sea level (eustasy), land levels (isostasy) require similar audits.