|Duration of observation:||2004 - 2010|
|Inferred cause of deformation:||Surface deposits, Uncertain|
|Characteristics of deformation:|
Semisopochnoi island, encompassing Mount Cerebus, subsided suring th period 2004 – 2010. Maximum rates of ~1 cm/yr are observed at Mount Cerebus, with the rest of the island subsiding at lesser rates. Downward motion is thought to include a component of horizontal motion. Deformation is though to reflect thermoelastic contraction of lava flows, mechanical compaction and gravitational sliding.
|Reference:||Lu, Z., and Dzurisin, D., 2014, InSAR imaging of Aleutian volcanoes: Chichester, UK, Springer-Praxis, 390 p.|
|Reference:||U.S. Geological Survey Alaska Volcano Observatory (AVO) website|
Aerial view of Semisopochnoi island. Source R. Clifford, U.S. Geological Survey AVO website