|Duration of observation:||1995 - 2010|
|Inferred cause of deformation:||Magmatic|
|Characteristics of deformation:|
Between 1995 – 2000, interferograms show a deformation signal near Iliamna, much of which seems to have occurred during 1996–1997 when a seismic swarm was recorded at the volcano. This seismic swarm has been attributed to a possible dike intrusion. Modelling the InSAR observations for a rectangular dike source yields a best-fit model that is a NW–SE-striking subvertical dike 7 9 8 km in dimension and centered at ~8 km depth. After this time interferograms show no evidence of deformation.
|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|
Photo of Iliamna. Source: D. Anderson, U.S. Geological Survey AVO website