Abstract
We model the location, geometry and density of the source of the recent
geological unrest at Campi Flegrei caldera (Italy) by inverting levelling,
trilateration and gravity measurements collected between 1980 and
1995. The best fitting source for the 1980-84 inflation is a horizontal
penny-shaped crack with a density 142 to 1115 kg/m3. The source best
fitting the deflation period (1990-95) is a vertical spheroid with
density between 902 and 1015 kg/m3. These results exclude the intrusion
of magma, and indicate the migration of fluid to and from the caldera
hydrothermal system as the cause of ground deformation and consequent
unrest.
Users
Please
log in to take part in the discussion (add own reviews or comments).