Fernandina

Volcano number:	353010
Region:	South America
Country:	Ecuador
Geodetic measurements?	Yes
Deformation observation?	Yes
Measurement method(s):	InSAR
Duration of observation:	January 2003 to September 2010, 1992- 1999 (ref2)
Inferred cause of deformation:	Magmatic
Characteristics of deformation:	At least two sources are considered to represent permanent zones of magma storage given their persistent or recurrent activity. Elastic deformation models indicate the presence of a flat-topped magma reservoir at ∼1.1 km below sea level and an oblate-spheroid cavity at ∼4.9 km b.s.l. The two reservoirs are hydraulically connected. Ref 1. Fernandina exhibits a semi-circular fringe pattern on its southwest flank (Fig. 1), which has been modelled with a dipping, radial dyke coincident with the 1995 eruption⁶. Uplift of 0.1 m from September 1998 to March 1999 suggests refilling of a shallow magma chamber. Ref 2
References:	'Bagnardi, M., & Amelung, F. (2012). Space‐geodetic evidence for multiple magma reservoirs and subvolcanic lateral intrusions at Fernandina Volcano, Galápagos Islands. Journal of Geophysical Research: Solid Earth, 117(B10).', 'Amelung, F., S. Jónsson, H. Zebker, and P. Segall (2000), Widespread uplift and “trapdoor” faulting on Galápagos volcanoes observed with radar interferometry, Nature, 407, 993–996, doi:10.1038/35039604.'
Location:	-91.55, -0.37