|Region:||Africa and Red Sea|
|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.
|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|
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.