Observations of Deformation
| Volcano number: | 312070 |
|---|---|
| Region: | Alaska |
| Country: | United States |
| Geodetic measurements? | Yes |
| Deformation observation? | Yes |
| Measurement method(s): | InSAR, GPS - campaign |
| Duration of observation: | 1992 - 2010 |
| Inferred cause(s) of deformation: | Magmatic |
| Characteristics of deformation: | Long-term average deformation rates show inflation of the volcano at ~5 mm/yr. The source of deformation is located beneath the center of the caldera at a depth of ~8 km. Source volume changes are 0.002 – 0.003 km³/yr. Deformation is thought to be magmatic in origin and caused by some combination of a) constant recharge of the system, b) growth of a segregated melt lens over time, or c) pressurisation of the system by trapped volatiles. |
| Reference(s): | Fournier, Thomas, and Freymueller, Jeff, 2008, Inflation detected at Mount Veniaminof, Alaska, with campaign GPS: Geophysical Research Letters, v. 35, L20306, doi:10.1029/2008GL035503, 5 p. |
| Lu, Z., and Dzurisin, D., 2014, InSAR imaging of Aleutian volcanoes: Chichester, UK, Springer-Praxis, 390 p. | |
| U.S. Geological Survey Alaska Volcano Observatory (AVO) website http://www.avo.alaska.edu/volcanoes/volcinfo.php?volcname=Veniaminof | |
| Location: | 56.17, -159.38 |
| REST API endpoint (JSON): | https://comet.nerc.ac.uk/wp-json/volcanodb/v1/volcano/853 |
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