Sangay

Volcano number:352090
Region:South America
Country:Ecuador
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:2007-2011
Inferred cause of deformation:Surface deposits
Characteristics of deformation:

During a regional ALOS survey of Northern Andes Volcanoes, Sangay was found to have consistent motion towards the satellite on the southwest flank at 1.3 ± 0.4 cm/year and away from the satellite on the southeast flank at 4.3 ± 0.4 cm/year (Morales Rivera et al., 2016). Given the satellite look direction, the measured motion is attributed to downhill motion of the steep flanks of the volcano by 3-5 cm/year

Reference:Morales Rivera, A. M., F. Amelung, and P. Mothes (2016), Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series, Geochem. Geophys. Geosyst., 17, 2869–2883, doi:10.1002/2016GC006393.
Location:-78.341, -2.005

Aerial view from the northeast of Sangay Stratovolcano. Photo: Minard Hall, 1976 (Instituto Geofisico, Escuela Politecnica Nacional, Quito)