| Volcano number: | 352050 |
|---|---|
| Region: | South America |
| Country: | Ecuador |
| Geodetic measurements? | Yes |
| Deformation observation? | Yes |
| Measurement method(s): | InSAR, GPS - continuous, Tiltmeter, EDM |
| Duration of observation: | 1991-2006 (EDM), 2006-2008 (InSAR), 2009-present (GPS, tilt) |
| Inferred cause of deformation: | Magmatic |
| Characteristics of deformation: |
During a period of seismic unrest in 2001-2002, EDM recorded contraction of up to 8 cm on the northeast flank of Cotopaxi. The deformation source was best fit by a oblate spheroid at 3 km depth south of the summit, hypothesised to be a magma body (Hickey et al., 2015). Waveform modelling of VLP earthquakes during this period gave a source location to the north of the summit, which has been attributed to both magmatic and hydrothermal activity (Molina et al., 2008; Hickey et al., 2015). |
| References: | 'Hickey, J., J. Gottsmann, and P. Mothes (2015), Estimating volcanic deformation source parameters with a finite element inversion: The 2001–2002 unrest at Cotopaxi volcano, Ecuador. J. Geophys. Res. Solid Earth, 120, 1473–1486. doi: 10.1002/2014JB011731.', 'Indira Molina, Hiroyuki Kumagai, Alexander García-Aristizábal, Masaru Nakano, Patricia Mothes, Source process of very-long-period events accompanying long-period signals at Cotopaxi Volcano, Ecuador, Journal of Volcanology and Geothermal Research, Volume 176, Issue 1, 10 September 2008, Pages 119-133, ISSN 0377-0273, http://dx.doi.org/10.1016/j.jvolgeores.2007.07.019.', '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.', 'IG-EPN website: http://www.igepn.edu.ec/cotopaxi/deformacion-cotopaxi' |
| Location: | -78.436, -0.677 |
