Page 315 - Caldera Volcanism Analysis, Modelling and Response

290 Valerio Acocella

Table 2 List of the performed experiments on collapse calderas.

Experiment Materials and Apparatus Main structural achievements
Komuro (1987) Dry ice evaporating in powder Outward dipping reverse faults
Marti et al. (1994) Balloon deflating in powder Outward dipping reverse faults
and subvertical faults
Acocella et al. (2000) Silicone sinking in sand Outward dipping reverse faults
and inward dipping normal
faults
Definition of room problem
Roche et al. (2000) Silicone sinking in sand Outward dipping reverse faults
and inward dipping normal
faults
Role of roof aspect ratio
Structure independent from
the reservoir shape
Acocella et al. (2001) Silicone sinking in sand Constant architecture of
nested pairs of calderas
Walter and Troll (2001) Balloon deflating in flour Outward dipping reverse faults
and inward dipping normal
faults
Troll et al. (2002) Balloon deflating in flour Inflation and deflation cycles
form piecemeal collapses
Cailleau et al. (2003) Balloon deflating in flour Outward dipping reverse faults
(under regional stress) and inward dipping normal
faults
Caldera elongated accordingly
with regional stress
Acocella et al. (2004) Silicone sinking in sand Caldera elongation may
(regional pre-existing faults) depend on regional fault
reactivation
No piecemeal collapses
Kennedy et al. (2004) Balloon deflating in sand Reverse and normal faults
controlled by the shape of
chamber roof
Lavalle `e et al. (2004) Balloon deflating in sand Outward dipping reverse faults
(with topography-cones) and inward dipping normal
faults
Topography may locally vary
the shape of calderas
Holohan et al. (2005) Balloon deflating in sand Outward dipping reverse faults
(under regional stress) and inward dipping normal
faults
Calderas elongated parallel to
minimum compression
Geyer et al. (2005) Balloon deflating in sand Roof aspect ratio and magma
chamber withdrawal