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Worldwide Database of Volcanic Ground Deformation


Volcano number: 222052
Region: Africa and Red Sea
Country: Kenya
Geodetic measurements? Yes
Deformation observation? Yes
Measurement method(s): InSAR
Duration of observation: January 2007 - January 2010
Inferred cause of deformation: Hydrothermal, Magmatic
Characteristics of deformation:

Subsidence has been observed at Silali between 2007 – 2010. A radially symmetric signal centred on the calderas western edge (-1.6 +/- 0.4 cm/yr los displacement) was observed using ALOS data. This deformation is believed to have occurred at a linear rate of -1.5 +/- 0.8 cm/yr, and can  be modelled as a point geometry at a depth of 3.9 km (Robertson, 2015).
To the NW of Silali ~ 2 cm of subsidence associated with an active hydrothermal system (Kepedo Hot Springs) is observed.

References: 'Robertson, E. 2015. Magma storage and transport at Kenyan Rift volcanoes: a remote sensing perspective. Chapter 2. Ph.D Thesis, University of Bristol, UK.', 'Smithsonian Institution Global Volcanism Program
Location: 36.23, 1.15