Volcano number:358020
Region:South America
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:1993-1999 (ERS), 2006-2010 (ALOS), 2015 (Sentinel-1a)
Inferred cause of deformation:Magmatic
Characteristics of deformation:

No deformation was detected at Calbuco volcano during ERS and ALOS surveys of the Southern Andes (Pritchard and Simons, 2004; Fournier et al., 2010; Pritchard et al., 2013).

Sentinel images of the April 2015 eruption of Calbuco recorded approximately 12 cm subsidence, best fitted by a Mogi source (assumed to be the magma reservoir) contracting by 49M m^3, located 5.5 km southwest of the volcano at a depth of 10 km (NERC COMET, 2015).

Delgado et al., 2017, estimated that the VEI 4 April 22–23, 2015 Calbuco eruption produced 12 cm of coeruptive subsidence from a source depth 8–11 km and offset ~ 2 km S from the summit.

Reference:Pritchard, M. E., and M. Simons (2004), An InSAR-based survey of volcanic deformation in the southern Andes, Geophys. Res. Lett., 31, L15610, doi:10.1029/2004GL020545.
Reference:Fournier, T. J., M. E. Pritchard, and S. N. Riddick (2010), Duration, magnitude, and frequency of subaerial volcano deformation events: New results from Latin America using InSAR and a global synthesis, Geochem. Geophys. Geosyst., 11, Q01003, doi:10.1029/2009GC002558.
Reference:Pritchard, M. E., Jay, J. A., Aron, F., Henderson, S. T., & Lara, L. E. (2013). Subsidence at southern Andes volcanoes induced by the 2010 Maule, Chile earthquake. Nature Geoscience, 6(8), 632-636. doi:10.1038/ngeo1855
Reference:Delgado, F., Pritchard, M. E., Ebmeier, S., González, P., & Lara, L. (2017). Recent unrest (2002–2015) imaged by space geodesy at the highest risk Chilean volcanoes: Villarrica, Llaima, and Calbuco (Southern Andes). Journal of Volcanology and Geothermal Research.
Location:-72.614, -41.326

Aerial view of Calbuco Volcano from the southeast. Photo: Hugo Moreno (University of Chile).