Pico - Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics

Observations of Deformation

Volcano number:	382020
Region:	Atlantic Ocean
Country:	Portugal
Geodetic measurements?	Yes
Deformation observation?	Yes
Measurement method(s):	InSAR, GPS - campaign
Inferred cause(s) of deformation:	Surface deposits, Uncertain
Characteristics of deformation:	An integrated InSAR and GPS vertical deformation map, between 2006 and 2010, identified subsidence of the summit crater of Pico Island at a rate of 9 mm/yr (Catalão et al., 2010). A large area of subsidence on the west of the island is also measured using GPS and InSAR. The slumping structure is several cubic kilometers in size. It is undergoing little horizontal displacement towards the southeast at 1.6 ± 1.3 mm/yr, but significant downward movement at 5–12 mm/yr. (Hildenbrand et al., 2010).
Reference(s):	Catalão, J., Nico, G., Hanssen, R., & Catita, C. (2010). Integration of INSAR and GPS for vertical deformation monitoring: a case study in Faial and Pico islands. In Proc. Fringe 2009 Workshop, Frascati, Italy (Vol. 30).
	Hildenbrand, A., Marques, F. O., Catalão, J., Catita, C. M. S., & Costa, A. C. G. (2012). Large-scale active slump of the southeastern flank of Pico Island, Azores. Geology, 40(10), 939-942.
	Smithsonian Institution Global Volcanism Program http://www.volcano.si.edu/volcano.cfm?vn=382020
Location:	38.47, -28.4
REST API endpoint (JSON):	https://comet.nerc.ac.uk/wp-json/volcanodb/v1/volcano/961