Volcano number:311280
Country:United States
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:2003 - 2010
Inferred cause of deformation:Hydrothermal, Magmatic, Faulting/tectonics
Characteristics of deformation:

Interferograms show a broad areas of uplift on the northeastern flank of Recheshnoi with peak rates of ~1 cm/yr. Superimposed upon this is a localised subsidence signal of up to 0.5 cm/yr. Uplift is modelled as a sill (horizontal disloaction) at 4 – 6 km depth and is thought to be caused by an influx of magma. The subsidence signals sharply bounded and are thought to be due to a small graben sturcture reactivated by subsidence of nearby hydrothermal features Geyser Bight and Hot Springs Cove.

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
Location:-168.539, 53.157

Photo of Recheshnoi. Source S. Smith, U.S. Geological Survey AVO website