Leveling data for Yellowstone caldera from 1976 to 1992.

Leveling data record a cycle of caldera uplift and subsidence from 1976 to 1992. The top curve shows uplift of about 18 cm (7 inches) from 1976 to 1984, the flat line shows no movement from 1984 to 1985, and the bottom curve shows subsidence of about 14 cm (5.5 inches) from 1985 to 1992 (Dzurisin, et al., 1995). The 1997 to 2003 uplift in the northern part of Yellowstone caldera is about 12-13 cm (4.7-5.1 inches).