Silali

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 Р2010. 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.

Reference:Robertson, E. 2015. Magma storage and transport at Kenyan Rift volcanoes: a remote sensing perspective. Chapter 2. Ph.D Thesis, University of Bristol, UK.
Reference:Smithsonian Institution Global Volcanism Program
http://volcano.si.edu/volcano.cfm?vn=222052
Location:36.23, 1.15

Silali has an elliptical 5 x 8 km summit caldera, seen here from the SE. Faults can be seen crossing the caldera in the lower left of the photograph. It is the largest volcano in the Kenyan Rift.