NOVOA LIZAMA , Camila

Key Points: • The overpressure required for failure at the walls of a magma chamber depends on its geometry and on the effective bedrock strength. • Plastic shear bands (faults) initiate either from near the apex or the tip depending on the symmetry and elongation of an oblate chamber. • Elastic dilation at oblate chambers tip open concurrent...

The 2011-2012 Cordon-Caulle eruption was the largest subaerial eruption of the 21th century. An inflation captured from InSAR between 2007 and 2009 was related to a volume of magma injection too small to have triggered this eruption. Here, we benefit from SAR imagery acquired by ALOS-1, ENVISAT and SENTINEL-1 data, to analyze the temporal and...