Observations of Deformation
Volcano number: | 212050 |
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Region: | Mediterranean and W. Asia |
Country: | Greece |
Geodetic measurements? | Yes |
Deformation observation? | Yes |
Measurement method(s): | InSAR, GPS - campaign |
Duration of observation: | 1995 to 2002 |
Inferred cause(s) of deformation: | Hydrothermal |
Characteristics of deformation: | Lagios et al. (2002): “After intense seismic activity in 1996, a GPS network was installed in June 1997 and re-occupied annually up to 2002.” Uplift between 14 to 140 mm was measured at all GPS stations. Corresponding horizontal displacements ranged from 13 to 53 mm.The displacement vectors indicate that the island is undergoing extension towards the East, West and South. A two-source “Mogi” model combined with assumed motion along the Mandraki Fault was constructed to fit the observed deformation. The best-fit model assumes sources at a depth of 5500 m NW of the centre of the island and at 6500 m offshore ESE of Yali Island. |
Reference(s): | Lagios, E., Sakkas, V., Parcharidis, I., & Dietrich, V. (2005). Ground deformation of Nisyros Volcano (Greece) for the period 1995–2002: Results from DInSAR and DGPS observations. Bulletin of Volcanology, 68(2), 201-214. |
Gottsmann, J., Carniel, R., Coppo, N., Wooller, L., Hautmann, S., & Rymer, H. (2007). Oscillations in hydrothermal systems as a source of periodic unrest at caldera volcanoes: Multiparameter insights from Nisyros, Greece. Geophysical Research Letters, 34(7). | |
Smithsonian Institution Global Volcanism Program http://www.volcano.si.edu/volcano.cfm?vn=212050 | |
Location: | 36.586, 27.16 |
REST API endpoint (JSON): | https://comet.nerc.ac.uk/wp-json/volcanodb/v1/volcano/1788 |