Volcano number:312180
Country:United States
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:1995 - 2004
Inferred cause of deformation:Surface deposits
Characteristics of deformation:

Novarupta is located at the edge of a broad region of uplift covering the vicinity of Trident, Martin and Mageik. Between 1992 – 2000, InSAR recorded uplift of this region at 5–10 mm/yr, and between 2000 – 2004 deformation continued at 4–7 mm/year. These interferograms also suggest localised subsidence of Novarupta, which has been attributed to thermoelastic contraction of the dome and thick ashflow tuff.

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:-155.157, 58.27

Photograph of Novarupta dome. Source: C. G. Reyes, U.S. Geological Survey AVO website