Volcano number:352010
Region:South America
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:2002-2004 (Envisat InSAR), 2007-2009 (ALOS InSAR)
Inferred cause of deformation:Surface deposits
Characteristics of deformation:

Following the largest historical eruption of Reventador in 2002, Envisat InSAR between 2004 and 2005 found deformation near the cone, which was attributed to subsidence of lava flows extruded between 2002 and 2004 (Bonvalot et al., 2005).

ALOS InSAR between 2007 and 2009 found subsidence rates of up to ~5 cm/year over the thickest parts of the lava flows (Naranjo et al., 2015).

Reference:Bonvalot, S., Froger, J.L., Rémy, D., Bataille, K., Cayol, V., Clavero, J., Comte, D., Gabalda, G., Gonzales, K., Lara, L. and Legrand, D., 2005. Application of INSAR interferometry and geodetic surveys for monitoring Andean volcanic activity: First results from ASAR-ENVISAT data. In 6th International Symposium on Andean Geodynamics, Inst. de Rech. pour le Dev., Barcelona, Spain. Available online at
Reference:Naranjo, M., S. K. Ebmeier, S. Vallejo, P. Ramon, F. Herrera, P. Mothes, 2015, Topographic change at Reventador Volcano, Ecuador, 2000-2010: Comparison of
field and satellite radar measurement; presentation, 26th IUGG General Assembly, 22 June - 2 July, 2015, Prague, Czech Republic. Abstract available online at
Location:-77.656, -0.077

Aerial view of Reventador from the southeast. Photo: Patricio Ramon, 2005 (IG-EPN, Quito).