Menengai

Volcano number:222060
Region:Africa and Red Sea
Country:Kenya
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:October 1997 - September 2000, 2003 - 2010
Inferred cause of deformation:
Characteristics of deformation:

Between 1997 – 2000 one ERS interferogram measured 3 cm of subsidence (Biggs et al 2009). This signal was modelled as a penny shaped crack source geometry, with diameter of 5.5 km at a depth of 1.5 km.

Robertson (2015) looked at ALOS interferograms between 2003 – 2010, but no deformation was recorded (within a 0.66 cm/yr deformation threshold).

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=222060
Location:36.07, -0.2

Menengai is a shield volcano, with a 12 x 8 km caldera. At least 70 post-caldera lava flows can be seen within the caldera, although their ages are unknown. In this image, north is up. NASA Landsat image, 1999 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).