Llaima

Observations of Deformation

Volcano number:357110
Region:
Country:Chile
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:2003 – 2008 and 2002 and 2015 ref2
Inferred cause(s) of deformation:Magmatic
Characteristics of deformation:

4 eruptive events. Maximum summit subsidence and uplift are ∼10 cm and ∼8 cm, respectively.Through inverse modeling of both periods, a deflating and inflating magma body can be inferred, located at a depth of 4 – 12 km, subject to a volume decrease of 10 – 46 × 106 m3 during the subsidence period, followed by a volume increase of 6 – 20 × 106 m3 during the uplift period. Reference 1.
Delgado et al., 2017, Estimated  At Llaima,  that the VEI 2 April 3, 2009 eruption was preceded by ~ 6–15 cm of precursory ground uplift one month before from a source ~ 5 km below the surface on the western side of the edifice. Reference 2.
InSAR shows temporally complex deformation of uplift and subsidence up to 11 cm on the eastern flank (Figure 6). The reason for the deformation is unknown, but appears to begin in December 2007 and be related to the January/February 2008 eruption. Reference 3.

Reference(s):Bathke, H., Shirzaei, M., & Walter, T. R. (2011). Inflation and deflation at the steep‐sided Llaima stratovolcano (Chile) detected by using InSAR. Geophysical Research Letters, 38(10).
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.
Fournier, T. J., Pritchard, M. E., & Riddick, S. N. (2010). Duration, magnitude, and frequency of subaerial volcano deformation events: New results from Latin America using InSAR and a global synthesis. Geochemistry, Geophysics, Geosystems, 11(1).
Location:-38.692, -71.729
REST API endpoint (JSON):https://comet.nerc.ac.uk/wp-json/volcanodb/v1/volcano/4310

Latest Sentinel-1 Data

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